Bottom Hole Pressure Patents (Class 166/250.07)
  • Publication number: 20120103601
    Abstract: Method for determination of a fluid influx profile and near-wellbore area parameters comprises measuring a first bottomhole pressure and after operating a well at a constant production rate changing the production rate and measuring a second bottomhole pressure. A wellbore fluid temperature over an upper boundary of a lowest productive layer and wellbore fluid temperatures above and below other productive layers are measured and relative production rates and skin factors of the productive layers are calculated from measured wellbore fluid temperatures and measured first and second bottomhole pressures.
    Type: Application
    Filed: September 29, 2011
    Publication date: May 3, 2012
    Inventors: Valery Vasilievich Shako, Vyacheslav Pavlovich Pimenov, Fikri John Kuchuk
  • Publication number: 20120103600
    Abstract: Method for determination of a fluid influx profile and near-wellbore area parameters comprises measuring a first bottomhole pressure and operating a well at a constant production rate. After changing the production rate a second bottomhole pressure is measured together with a fluid influx temperature for each productive layer. Relative production rates and skin factors of the productive layers are calculated from measured fluid influx temperatures and measured first and second bottomhole pressures.
    Type: Application
    Filed: September 29, 2011
    Publication date: May 3, 2012
    Inventors: Valery Vasilievich Shako, Vyacheslav Pavlovich Pimenov, Fikri John Kuchuk
  • Publication number: 20120097388
    Abstract: A sensor is configured to sense pressure in an isolated or subterranean environment. The sensor is configured to act as a capacitor with a capacitance that varies as a function of pressure. The sensor has a robust design with minimal moving parts, and in which any parts that do move do not communicate electrically through direct electrical conduction (e.g., through conductive leads). Instead, moving parts that participate in the performance of sensor as a capacitor receive and dispense electrical charge only through a dielectric fluid (e.g., a gas or liquid within the sensor). This may reduce hysterysis, lag, and/or friction with respect to pressure-dependent capacitor designs in which wiring is connected directly to moving parts.
    Type: Application
    Filed: October 20, 2010
    Publication date: April 26, 2012
    Inventor: DAVID W. BECK
  • Patent number: 8080498
    Abstract: The concept involves placing within the annulus, hollow particles that possess material and geometric properties such that the hollow particles buckle at or near a defined pressure. Buckling of the particles increases the available volume within the annulus, thereby decreasing the annular pressure. The elastic hollow particles are designed such that they buckle in a sufficiently elastic manner to allow them to rebound towards their original shape as the pressure decreases. The rebounded particles then remain available to mitigate subsequent instances of APB.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: December 20, 2011
    Assignee: BP Corporation North America Inc.
    Inventors: James E. Shepherd, Joseph F. Rakow, Phillip David Pattillo, II
  • Patent number: 8078328
    Abstract: Systems, program product, and methods for providing real-time reservoir management of one or more reservoirs across one or more fields are provided. A system can include multiple monitoring wells and at least one injection well in communication with a central facility including a reservoir management computer or server positioned to provide real-time reservoir management of the one or more reservoirs. The computer can include, stored in memory, reservoir management program code, which when executed, can cause the computer to perform the operations of calibrating an injection well model for each of one or more injection wells positioned in a reservoir responsive to real-time injection rate and wellhead pressure data associated therewith, calculating static reservoir pressure for each of the injection wells responsive to the respective calibrated injection well model and responsive to respective surface injection rate and wellhead pressure data, and generating real-time automated isobaric pressure maps.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: December 13, 2011
    Assignee: Saudi Arabian Oil Company
    Inventors: Said S. Malki, Meshal M. Buraikan, Rami Ahmed Al-Abdulmohsin
  • Patent number: 7996153
    Abstract: A method includes calculating a correction factor that uses a tool component volume change model to estimate a system volume change resulting from a change in the tool component. An apparatus includes a carrier conveyable into a well borehole, a formation test tool coupled to the carrier, the formation test tool including a tool component. A measurement device to estimate a change in the tool component during operation, and a compensator uses an estimated system volume change resulting at least in part from the change in the tool component during a downhole operation, the compensator compensating for the system volume change and wherein the estimated system volume change is estimated at least in part using a volume change model.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: August 9, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Eick Niemeyer, Tobias Kischkat, Matthias Meister
  • Patent number: 7980306
    Abstract: A method and apparatus for testing a multi-zone reservoir while reservoir fluids are flowing from within the wellbore. The method and apparatus enables isolation and testing of individual zones without the need to pull production tubing. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It may not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: July 19, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: John R. Lovell, Warren Zemlak, Marc Allcorn, Luis F. Peixoto, Steven Harrison, Andrew Prestridge, Gokturk Tunc, Frank Espinosa
  • Publication number: 20110168390
    Abstract: Disclosed embodiments include apparatus and methods for transferring a pressure to downhole electronics with a pressure transfer medium. An embodiment of the apparatus includes a body supporting a moveable pressure transfer member, a pressure transfer medium contained by the body and the moveable pressure transfer member, and an electronic component disposed in the pressure transfer medium, wherein the pressure transfer member is moveable to transfer a pressure to the pressure transfer medium and the electronic component. Another embodiment of the apparatus includes a moveable enclosure and a non-conductive material, wherein the non-conductive material isolates an electronic component from a downhole fluid and the moveable enclosure is operable to transfer a hydrostatic pressure to the non-conductive material and the electronic component. An embodiment of a method includes transferring a downhole hydrostatic pressure to an electronic component via a flexible package and a pressure transfer medium.
    Type: Application
    Filed: September 24, 2008
    Publication date: July 14, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Michael L. Fripp, Donald G. Kyle, Orlando Dejesus, Roger Schultz
  • Publication number: 20110168389
    Abstract: A tool assembly having a downhole shut-in valve, a packer, and one or more ports. The downhole shut-in valve may be configured to selectively permit flow from a conduit to a target zone of a wellbore. The packer may be configured to isolate the target zone of the wellbore. The ports may be between the conduit and the target zone. The downhole shut-in valve may be configured to close in about 5 seconds or less.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 14, 2011
    Inventors: Raymund J. Meijs, Eric Bivens, Vincent P. Zeller
  • Publication number: 20110094733
    Abstract: Apparatus and methods for measuring properties of formation material and fluid in a borehole wall. In some embodiments, the apparatus includes a cylinder with a drawdown piston slideably disposed therein, a probe assembly and a passageway configured to provide fluid communication between the probe assembly and the cylinder. The probe assembly has a housing, a piston slideably disposed within the housing, the piston having a throughbore and a pad coupled thereto, and a tubular slideably disposed within the throughbore. The drawdown piston is translatable from a first position toward a second position to draw fluid into the probe assembly, the passageway and the cylinder, and translatable from the second position toward the first position to increase pressure of fluid in the passageway.
    Type: Application
    Filed: August 15, 2008
    Publication date: April 28, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Mark A. Proett
  • Patent number: 7890264
    Abstract: A method of analyzing a subterranean formation. The method includes specifying a volume of interest in the subterranean formation, specifying an injector wellsite that penetrates the volume of interest, specifying a first producer wellsite and a second producer wellsite, each of which penetrates the volume of interest, calculating a first Injectivity-Productivity Index (IPI) for a first injector-producer wellsite pair which includes the injector wellsite and the first producer wellsite, calculating a second IPI for a second injector-producer wellsite pair which includes the injector wellsite and the second producer wellsite, determining whether the first IPI is substantially equal to the second IPI to obtain an analysis result, and adjusting a wellsite operation based on the analysis result.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: February 15, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Jonathan Elphick
  • Patent number: 7886820
    Abstract: A method and system for monitoring any incursion of particulate matter from a gas hydrate formation into a well casing used for the production of the gas hydrate and determining the degree of incursion of particulate material within the distal end of the well casing.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: February 15, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Shunetsu Onodera, Hitoshi Sugiyama, Brian W. Cho, Ahmed H. Al-Jubori, Masafumi Fukuhara
  • Patent number: 7878248
    Abstract: A method includes hydraulically fracturing a subterranean formation with a first treatment fluid and allowing the hydraulic fracture to close. The method includes preparing a second treatment fluid having a damage removal agent including carbon dioxide. The second treatment fluid further includes a proppant pack damage removal agent including an oxidizer, a radical initiator, an acid, a solvent, and/or other damage removal agents. The method further includes injecting the second treatment fluid into the subterranean formation at a downhole pressure below a fracturing pressure for the subterranean formation. The method includes holding pressure on the formation while the second treatment fluid enhances formation and proppant pack permeability, and flowing the second treatment fluid back to the surface.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: February 1, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Carlos Abad, Kevin W. England
  • Publication number: 20110017448
    Abstract: A method and apparatus for measuring formation properties comprising coiled tubing fitted with a bottom hole assembly, wherein said bottom hole assembly comprises means to measure formation fluid properties, means to transmit said formation fluid properties to a surface monitoring system, means to isolate a section of a wellbore, and means to control the flow of fluid entering said coiled tubing.
    Type: Application
    Filed: January 9, 2009
    Publication date: January 27, 2011
    Inventors: Douglas Pipchuk, Hubertus V. Thomeer, Christopher Sarvari
  • Patent number: 7810563
    Abstract: A method for controlling water condensation in the pores of a near wellbore region of a permeable formation through which wet natural gas flows into an inflow section of an oil and/or gas production well, the method comprising controlling fluid transfer through the near wellbore region such that development of a water bank resulting from condensation of water in said region is inhibited or promoted. If the well is a gas production well then development of a water bank may be inhibited by controlling pressure drawdown, cyclic well shut in, fracturing and/or injection of heat generating and/or water transporting chemicals.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: October 12, 2010
    Assignee: Shell Oil Company
    Inventors: Marten Adriaan Buijse, Michael Zvi Golombok, Antoon Peter Gerardus Van Heel, Johannes Gerhardus Maas, Hendrik Martinus Wentinck, Marcus Stefanus Welling
  • Patent number: 7775299
    Abstract: A method for creating a programmable pressure zone adjacent a drill bit bottom hole assembly by sealing near a drilling assembly, adjusting the pressure to approximately or slightly below the pore pressure of the well bore face to permit flow out of the formation, and, while drilling, adjusting by pumping out of, or choking fluid flow into, the drilling assembly between the programmable pressure zone and the well bore annulus to avoid overpressuring the programmable pressure zone unless required to control the well.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: August 17, 2010
    Inventors: Waqar Khan, Geoff Downton
  • Publication number: 20100200223
    Abstract: A method is proposed for heating a hydrocarbons reservoir, comprising the provision of an installation comprising: a first wellbore equipped with an injection string fitted with an adjustable choke and an extraction string fitted with an adjustable choke, a set of sensors, intended to measure physical variables, an automatic device making it possible to control and monitor the operation of the installation; the circulation of steam from one string to the other; the control of the steam injection flow rate in function of a target value; the keeping of a set of physical variables within a predetermined range of values by continuous action of the automatic device on the choke of the injection string, and on the choke of the extraction string.
    Type: Application
    Filed: December 22, 2009
    Publication date: August 12, 2010
    Applicant: TOTAL S.A.
    Inventors: Dominique Mauduit, Bruno Marty, Pierre Lemetayer, Emmanuel Toguem Nguete
  • Patent number: 7753127
    Abstract: A bottomhole tool and a method for optimizing oil production rate from an oil well with high gas-to-oil ratio and stabilizing thereof in case of occurrence of a gas cone or gas skin conditions are disclosed. The resistance of the adjustable multi-stage flow resistor is determined by a position of a telescoping needle, which in turn is defined by a driving means including a motor and a gearbox. The motor is driven via a cable from a surface by a control means adapted to receive information about the bottomhole parameters from local sensors via a sensor cable. Methodology explaining the principles of maintaining well stability is also disclosed. Automatic adjustment of the bottomhole pressure is maintained over a wide range of operating parameters throughout the life of the well to maximize its oil output.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: July 13, 2010
    Assignee: Tseytlin Software Consulting, Inc.
    Inventor: Simon Tseytlin
  • Patent number: 7729861
    Abstract: A method for conducting a formation test includes providing a volume change model for a tool component, and providing a control program that uses the volume change model to estimate a system volume change resulting from a change in the tool component during a downhole operation. An apparatus for conducting a formation test includes a carrier, a formation test tool, a measurement device that estimates a change in a tool component during operation, and a processor that uses a volume change model to estimate a system volume change resulting at least in part from the change in the tool component during a downhole operation.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: June 1, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Eick Niemeyer, Tobias Kischkat, Matthias Meister
  • Publication number: 20100101787
    Abstract: A transmitter generates an acoustic ping in a fluid in a borehole, and a receiver monitors waves resulting from the acoustic ping. Responsive to the monitored waves, an attribute of the fluid is estimated, including a sonic velocity, a mixture of gas and oil, a mixture of water and oil, an amount of sand, an amount of gas, an amount of skin effect, or a depth of fluid. An operation of the artificial lift device is then controlled responsive to the estimated attribute. Alternately, a sonic velocity is estimated for the fluid through an analysis of a sample pumped to the surface or through an analysis of monitored waves. A depth of the fluid is calculated responsive to the estimated sonic velocity for the fluid in the borehole and the monitored T-waves. The operation of the artificial lift device is then controlled responsive to the calculated depth of fluid.
    Type: Application
    Filed: October 27, 2008
    Publication date: April 29, 2010
    Applicant: Baker Hughes Incorporated
    Inventors: Robert H. McCoy, Dustin B. Campbell
  • Publication number: 20100089570
    Abstract: A method and apparatus for controlling the operation of a well which is not flowing or in which fluid is pumped or injected into the well utilising a downhole located pressure monitoring device which is operative to monitor a characteristic pressure profile of the well, and to respond and generate a triggering output when a significant deviation to the pressure profile is introduced into the well as a control signal to the monitoring device by comparing two separate pressure profiles within a certain time span, the device only generating a triggering output when the same pressure profile is monitored twice within the time span; and an actuator which is initiated into operation to control any required operation of the well when the monitoring device responds to the control signal and generates the triggering output.
    Type: Application
    Filed: December 14, 2009
    Publication date: April 15, 2010
    Applicant: OMEGA COMPLETION TECHNOLOGY LTD.
    Inventors: Mark Buyers, David Forsyth
  • Patent number: 7686078
    Abstract: Well jet device comprises a packer on a pipe string, with a central channel and a jet pump, comprising channels for supplying a working medium to a nozzle and supplying a medium pumped from the well. A diffuser output connects to the annular space and the nozzle connects to the pipe string internal cavity on the side of the input thereof through the channels. The body has a movable steady bush, spring-loaded working medium flow switch. Steady bush bypass holes and mounting seat for mounting a sealing unit provided with a hole for passing a logging cable or for arranging a depression insert provided with autonomous instruments and a return valve are provided. The sleeve, in the top position, closes the channels and, in lower position, the top end face is positioned under the input into the channel. The bypass holes are connected to the input into the channel.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: March 30, 2010
    Inventor: Zinoviy Dmitrievich Khomynets
  • Patent number: 7673680
    Abstract: A method and apparatus for controlling the operation of a flowing or producing well utilising: a downhole located pressure monitoring device which is operative to monitor a characteristic pressure profile of the flowing well, and to respond when a significant deviation to the pressure profile is introduced into the well as a control signal to the monitoring device; and an actuator which is initiated into operation to control any required operation of the well when the monitoring device responds to the control signal.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: March 9, 2010
    Assignee: Omega Completion Technology Ltd.
    Inventors: Mark Buyers, David Forsyth
  • Publication number: 20100018702
    Abstract: Embodiments of the present invention relate to systems and methods for accurately determining a pore pressure of a subsurface formation (20) penetrated by a wellbore (40). More specifically, but not by way of limitation, embodiments of the present invention may provide for measuring pressure and temperature at a measuring location proximal to the wellbore for a predetermined amount of time, storing the measurements, communicating the measurements and processing the pore pressure form the pressure and temperature measurements. The measuring location may be a location in a channel (50) drilled from the wellbore into the formation.
    Type: Application
    Filed: September 27, 2007
    Publication date: January 28, 2010
    Inventors: John Cook, Marc Thiercelin
  • Publication number: 20100006282
    Abstract: Assembly for pressure control when drilling underground to locate or produce hydrocarbons; whereby the drilling is done by means of a drill string with fluid circulation down through the drill string and up through an annulus between the drill string and the open hole or casing, as the underground in the open hole may comprise one or both of: areas with formation strength which is unable to withstand the pressure from the fluid circulation without fracturing and areas with formation pressure which cannot be combined with each other or the fluid circulation pressure without the fluid unintentionally leaking in or out from the above-mentioned areas.
    Type: Application
    Filed: November 12, 2007
    Publication date: January 14, 2010
    Inventor: Rolf Dirdal
  • Patent number: 7637318
    Abstract: A pressure communication assembly external to casing with various forms of connectivity to a pressure source. A well system includes a casing string positioned in the well, with a bore extending longitudinally through the casing string; a chamber attached to the casing string and positioned external to the casing string bore; and a device which provides fluid communication between an interior of the chamber and a pressure source external to the casing. A method of monitoring pressure in a well includes the steps of: installing a casing string in the well with a chamber positioned external to a through bore of the casing string, and the chamber being isolated from the well external to the casing string; and then actuating a device to thereby provide fluid communication between the chamber and the well external to the casing string.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: December 29, 2009
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jose Sierra, David O. Johnson
  • Patent number: 7624801
    Abstract: A control system and control method for controlling a modular apparatus for extracting petroleum and/or generating electricity based on subsurface data as well as market prices of electricity and/or petroleum. One or more probes measure subsurface total pressure, partial pressure of carbon dioxide, partial pressure of hydrogen, oil flow rate, gas flow rate, underground temperature, and/or viscosity of the oil. The control system/method controls the apparatus based on the subsurface parameters by controlling an injection module and/or a gas separator module to increase or decrease output of driver gas. The control system/method may also control the injection module and/or the gas separator module to increase (or decrease) output of driver gas when the market price of electricity decreases (or increases) and/or petroleum increases (or decreases).
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: December 1, 2009
    Assignee: Pioneer Energy Inc.
    Inventors: Robert M. Zubrin, Mark H. Berggren, Douwe Bruinsma
  • Publication number: 20090276100
    Abstract: Systems, program product, and methods for providing real-time reservoir management of one or more reservoirs across one or more fields are provided. A system can include multiple monitoring wells and at least one injection well in communication with a central facility including a reservoir management computer or server positioned to provide real-time reservoir management of the one or more reservoirs. The computer can include, stored in memory, reservoir management program code, which when executed, can cause the computer to perform the operations of calibrating an injection well model for each of one or more injection wells positioned in a reservoir responsive to real-time injection rate and wellhead pressure data associated therewith, calculating static reservoir pressure for each of the injection wells responsive to the respective calibrated injection well model and responsive to respective surface injection rate and wellhead pressure data, and generating real-time automated isobaric pressure maps.
    Type: Application
    Filed: May 4, 2009
    Publication date: November 5, 2009
    Applicant: Sauid Arabian Oil Company
    Inventors: Said S. Malki, Meshal M. Buraikan, Rami Ahmed Al-Abdulmohsin
  • Publication number: 20090260806
    Abstract: A bottomhole tool and a method for optimizing oil production rate from an oil well with high gas-to-oil ratio and stabilizing thereof in case of occurrence of a gas cone or gas skin conditions are disclosed. The resistance of the adjustable multi-stage flow resistor is determined by a position of a telescoping needle, which in turn is defined by a driving means including a motor and a gearbox. The motor is driven via a cable from a surface by a control means adapted to receive information about the bottomhole parameters from local sensors via a sensor cable. Methodology explaining the principles of maintaining well stability is also disclosed. Automatic adjustment of the bottomhole pressure is maintained over a wide range of operating parameters throughout the life of the well to maximize its oil output.
    Type: Application
    Filed: April 16, 2008
    Publication date: October 22, 2009
    Applicant: TSEYTLIN SOFTWARE CONSULTING, INC.
    Inventor: Simon Tseytlin
  • Patent number: 7588081
    Abstract: The invention provides a method of treating a subterranean formation penetrated by at least one injection well and at least one production well, the method comprising the steps of a) analyzing the injection well, the production well, and reservoir contained in the subterranean formation; b) selecting at least one fluid and at least one permeability reducer to be placed in flow ways contained within the formation; and c) performing a formation permeability modification using the selected fluids and at least one permeability reducer, whereby the flow of injected driving fluid between the injection well and production well is substantially reduced. In one embodiment, the method of analyzing the injection well, the production well, and reservoir contained in the subterranean formation includes the steps of evaluation of completion information, reservoir data, or both.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: September 15, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Jochen Pfeiffer, Curtis L. Boney
  • Patent number: 7548681
    Abstract: A technique enables the reduction or prevention of galvanic action by electrically insulating components of a system. Fiber optic systems can be protected with the technique by preventing the formation of hydrogen ions through galvanic action that otherwise contribute to hydrogen darkening of optical fibers.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: June 16, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Scott Rubinstein, Ramaswamy Meyyappan
  • Patent number: 7530392
    Abstract: A method and system for the production of a gas hydrate including the steps of drilling into a subterranean gas hydrate formation and at least partially depressurizing the gas hydrate formation to permit separation of gas and water from the hydrate form. The gas and water is then pumped from the formation and recovered from the well. At least a portion of water pumped from the well is water that is introduced into the well from the surface or reintroduced by a feed back loop from the production operation.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: May 12, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Hitoshi Sugiyama, Brian W. Cho, Shunetsu Onodera, Ahmed H. Al-Jubori, Masafumi Fukuhara
  • Patent number: 7527094
    Abstract: A barrier system for a subsurface treatment area is described. The barrier system includes a first barrier formed around at least a portion of the subsurface treatment area. The first barrier is configured to inhibit fluid from exiting or entering the subsurface treatment area. A second barrier is formed around at least a portion of the first barrier. A separation space exists between the first barrier and the second barrier.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: May 5, 2009
    Assignee: Shell Oil Company
    Inventors: Billy John McKinzie, Harold J. Vinegar, Kenneth Michael Cowan, Wolfgang Friedrich Johann Deeg, Sau-Wai Wong
  • Publication number: 20090084544
    Abstract: A method for increasing production in a reservoir, comprising performing a swabbing test at a depth in a pipe, wherein the pipe is located in a wellbore and wherein a portion of the wellbore is located inside the reservoir, periodically measuring, during the swabbing test, pressure in the bottom portion of the pipe using the pressure gauge to obtain a plurality of pressure measurements, wherein the pressure gauge is affixed to an inner wall of a bottom portion of the pipe, and determining a plurality of flow rates of fluid flowing from the reservoir through perforations in the wellbore into the pipe using a flow rate equation and the plurality of pressure measurements
    Type: Application
    Filed: September 23, 2008
    Publication date: April 2, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Jose A. Caldera
  • Patent number: 7458420
    Abstract: A system and method is provided to measure a pressure or other characteristic at a source (e.g. a hydraulic power supply) and in or near a downhole tool. A comparison of the measurements is then made to verify that the system is operating according to desired parameters. In specific applications, the comparison can be made to ensure the supply of hydraulic fluid is reaching the downhole tool.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: December 2, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Emmanuel Rioufol, Brian W. Cho, Mark W. Brockman, Philippe Gambier
  • Publication number: 20080271886
    Abstract: A method for producing gas from a well with low pressure involves running a bottom hole pressure test to graph a P-Q curve. The operator computes a frictional pressure drop due to friction of the gas flowing through the production tubing to the surface. A packer is set above perforations in the well. A screw pump is selected that has a capacity equal to the sum of the frictional pressure drop plus a desired wellhead pressure. The screw pump has a flow rate capacity determined from the P-Q curve. The operator may vary the frequency of a downhole motor to achieve the desired wellhead pressure.
    Type: Application
    Filed: July 21, 2008
    Publication date: November 6, 2008
    Applicant: Baker Hughes Incorporated
    Inventors: Joseph E. Vandevier, John L. Bearden
  • Patent number: 7438135
    Abstract: Methods are provided in which reliance is placed on a first and second barrier respectively positioned in a well 10 to provide well control during well suspension, completion and/or workover operations. Each of the barriers is below the depth of the lowermost end of a completion string when that string is installed in the well. By not placing either barrier higher up in the well-bore, both of the barriers can remain in place during suspension and completion and workover operations, thus obviating the need to use a BOP stack to supplement well control. This results in a considerable saving in drill rig time and thus significantly reduces the cost of constructing a well.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: October 21, 2008
    Assignee: Woodside Energy Ltd.
    Inventors: Peter Ernest Page, Alexander Jeffrey Burns, John Edward Niski
  • Patent number: 7438128
    Abstract: A method for identifying annular gas sources in a wellbore is disclosed. In one embodiment, the method comprises providing a set of parameters, wherein the set of parameters corresponds to depths in the wellbore. In addition, the method comprises analyzing annular gas in the wellbore to provide isotopic data of the annular gas. The method further comprises correlating the isotopic data to the set of parameters to identify the annular gas source.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: October 21, 2008
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Richard J. Drozd, Louis W. Elrod, Patrick Jacobs
  • Publication number: 20080196888
    Abstract: A method to determine movement of a wellhead component includes sensing a relative position of the wellhead component with a magnetostrictive sensor over a selected interval of time. The method includes sending a signal from the magnetostrictive sensor to a data acquisition device and recording the relative position of the wellhead component with the data acquisition device with respect to the selected interval of time. Further, the method includes comparing the recorded position of the wellhead component with operations data to determine if the relative position is desirable.
    Type: Application
    Filed: February 6, 2008
    Publication date: August 21, 2008
    Applicant: HYDRIL LLC
    Inventors: Robert Arnold Judge, David Dietz, Eric Milne
  • Publication number: 20080185143
    Abstract: A method and apparatus for testing a blowout preventer (BOP) wherein a pressurization unit applies fluid to an isolated portion of the throughbore of the BOP. A signal that is representative of the actual pressure in the isolated portion of the throughbore over successive time points and a pre-determined non-deterministic finite state automaton are used to predict the pressure in the isolated portion of the throughbore as a function of time relative to a pre-determined acceptable leak rate and the time at which stability is achieved. In one embodiment stability is achieved when successive predicted pressures are within a predetermined difference over a predetermined interval of time. Visual indications are provided to depict the progress of testing.
    Type: Application
    Filed: October 31, 2007
    Publication date: August 7, 2008
    Applicant: BP Corporation North America Inc.
    Inventors: Warren J. Winters, Ronald B. Livesay
  • Patent number: 7401655
    Abstract: A method for producing gas from a well with low pressure involves running a bottom hole pressure test to graph a P-Q curve. The operator computes a frictional pressure drop due to friction of the gas flowing through the production tubing to the surface. A packer is set above perforations in the well. A screw pump is selected that has a capacity equal to the sum of the frictional pressure drop plus a desired wellhead pressure. The screw pump has a flow rate capacity determined from the P-Q curve. The operator may vary the frequency of a downhole motor to achieve the desired wellhead pressure.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: July 22, 2008
    Assignee: Baker Hughes Incorporated
    Inventors: Joseph E. Vandevier, John L. Bearden
  • Publication number: 20080142212
    Abstract: A technique enables sensing one or more wellbore parameters along a specific well zone. A section of instrumented coiled tubing is provided with a sensor array extending along its exterior. The sensor array is designed to sense well fluid related parameters and may comprise an optical fiber sensor. A cross-over allows the sensor array to communicate with a surface location via a control line routed along a coiled tubing interior.
    Type: Application
    Filed: December 18, 2006
    Publication date: June 19, 2008
    Inventors: Arthur H. Hartog, Hubertus V. Thomeer, Martin E. Poitzsch, Benjamin P. Jeffryes
  • Patent number: 7387160
    Abstract: A method and system used for testing a subterranean well. A sensor (34), such as a distributed temperature sensor, comprising a sensing optical fiber (48) connected to an interrogation unit (50), is deployed together with a drill stem test string (20) so that the sensor extends below the packer of the drill stem test string and across at least one formation (22) of the wellbore.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: June 17, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Paul O'Shaughnessy, Christian Koeniger
  • Publication number: 20080134775
    Abstract: The present invention provides methods and apparatus for obtaining downhole well pressure during wellbore operations. One method comprises providing a well intervention tool comprising a straddle sealing assembly having upper and lower annulus sealing elements and a fluid injection port positioned therebetween, the well intervention tool comprising a fluid injection bore having positioned therein a pressure measurement tool; placing the tool in straddle position about a wellbore region to be intervened, with the pressure measurement tool fluidly connected to a wellbore region below the lower annulus sealing element; and performing the wellbore intervention operation while communicating fluid from below the lower annulus sealing element to the pressure measurement tool, thus obtaining a pressure measurement below the lower annulus sealing element during the wellbore intervention operation. This abstract will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Application
    Filed: May 21, 2007
    Publication date: June 12, 2008
    Inventors: Douglas Pipchuk, Michael H. Kenison
  • Patent number: 7380597
    Abstract: A method of installing a sensor located in a chamber on the out-side of a casing, comprising the steps of positioning the casing in a well, cementing the casing in position, positioning a drilling tool inside the casing level with the chamber, drilling through the casing, chamber and cement into the formation surrounding the well so as to create a fluid communication path, and sealing the hole drilled in the casing.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: June 3, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: John Edwards, Philippe Gambier, Vincent Tourillon, Christian Chouzenoux, Emmanuel Rioufol
  • Publication number: 20080115933
    Abstract: The present invention provides a method and apparatus for maintaining or restoring decreasing production from a hydrocarbon or gas well using the exhaust of an internal combustion engine. The exhaust is utilized to displace or lighten the fluids in a well bore and increase the bottom hole pressure allowing the well to flow more easily with minimal or no damage to the formation that produces the hydrocarbon or gas. In another aspect, the present invention provides a means of purging and/or pressure testing production wells, pipelines, containers or vessels using exhaust gas. The present invention is a simple, effective, inexpensive and mobile means for maintaining or restoring a production well and/or purging and/or pressure testing of pipelines, containers or vessels.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 22, 2008
    Inventor: Frank Robert Wilson
  • Patent number: 7353869
    Abstract: A system and method is provided for sensing a variety of parameters in well-related environments. A skin sensor is deployed in downhole applications to obtain data used in analyzing well characteristics.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: April 8, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Rodney J. Wetzel, Randolph J. Sheffield, Rashmi B. Bhavsar, Philippe Gambier
  • Patent number: 7343970
    Abstract: A system and method is provided for producing fluid from a subterranean formation. A sensor system is used to monitor bottom hole flowing pressure and formation pressure. The relationship of these pressures is utilized in conjunction with a stability envelope of the formation in optimizing fluid production.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: March 18, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Jorge E. Lopez de Cardenas, Adinathan Venkitaraman
  • Patent number: 7325597
    Abstract: Safety valve apparatus for a pressure telemetry system utilizing a small diameter tubing conveying pressure from a downhole pressure chamber to the surface, the system pressurized with a monitoring gas, is presented. A check valve assembly is placed along the fluid flow path having a check valve with an operating member. The operating member moves to a sealed position by floating on an activating fluid. The operating member must be of low effective specific gravity to float on wellbore hydrocarbon fluids, either liquid or gas. Consequently, in one preferred embodiment, the check valve operating member is a hollow dart which retains the monitoring gas inside the hollow portion, thereby effectively reducing its specific gravity such that it will float on the activating fluid.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: February 5, 2008
    Assignee: WellDynamics, B.V.
    Inventors: Paul D. Ringgenberg, Jose Sierra
  • Patent number: 7311142
    Abstract: A downhole tool positionable in a wellbore for penetrating a subterranean formation includes a housing having at least one protuberance extending therefrom. The protuberance has at least one centralizing section and a protective section. A probe is positioned in the protective section such that the horizontal cross-sectional area of the housing along the protective section is less than the horizontal cross-sectional area of the housing along the at least one centralizing section.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: December 25, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Patrick Fisseler, Tom Palmer, James Mather, Colin Longfield, Richard Meehan, Jean-Marc Follini, Jean-Michel Hache