Indicating Agent Released In Drilling Fluid Patents (Class 175/42)
  • Patent number: 9390619
    Abstract: An accessory for a device includes an actuator that is configured to be activated to operate a switch on the device when the accessory is physically engaged with the device. The switch is operable to cause the device to switch between on and off modes in which the device is configured to function. The off mode is a mode in which the device consumes less energy than when in the on mode. A controller is communicatively coupled with the actuator and is configured to activate the actuator to operate the switch when power is applied to the actuator.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: July 12, 2016
    Assignee: Smiths Detection-Watford Limited
    Inventors: Steve Richardson, Stephen Long
  • Patent number: 9169697
    Abstract: Downhole abrading tools have one or more identification tags disposed in or on the cutting end of the tools, and a housing having a detector and a relay module. The identification tags emit one or more signals that are detected by the detector which is disposed in close proximity to the cutting end. The relay module is operatively associated with the detector. During operation of the tool, the cutting end is worn causing release or destruction of one or more identification tags. The release or destruction of one or more identification tags causes a change in the signal or signals being detected by the detector. The signal change(s) is/are communicated through the relay module to the operator so that the operator can identify in real-time the amount of wear of the cutting end and, in some embodiments, the location of the wear of the cutting end.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: October 27, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Larry T. Palmer
  • Publication number: 20150000978
    Abstract: Presented are methods and systems for tracking and assessing drilling fluid flow and performance and, accordingly, detecting drilling mud return depth. The drilling mud is injected with a mineralogical dopant in an amount that does not affect the physical or chemical properties of the drilling mud. The doped drilling mud is injected into a known mud pulse and a detector identifies the mud pulse in which the mineralogical dopant emerges from the borehole, allowing calculation of the drilling mud return depth.
    Type: Application
    Filed: April 30, 2014
    Publication date: January 1, 2015
    Applicant: CGG SERVICES SA
    Inventor: Chi Vinh LY
  • Publication number: 20140209384
    Abstract: A method of detecting changes in return drilling fluid flow during drilling operations includes injecting at least one tracer gas at a measured rate into a return drilling fluid. A first sample of gases are extracted from the return drilling fluid at a location downstream of injection of the at least one tracer gas. A first concentration of the tracer gas in the first sample of gases is measured. A second sample of gases is extracted from the return drilling fluid at the location. A second concentration of the tracer gas in the second sample is measured. Changes in measured concentration of the tracer gas from the first and second samples are determined. The method includes using the change in measured concentration to infer a change in the flow rate.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: Chevron U.S.A. Inc.
    Inventor: Scott Alan Hanson
  • Patent number: 8757290
    Abstract: A method of monitoring the wear of drill bits for drilling wells in earth formations, several embodiments of an improved drill bit for drilling a well in an earth formation, and methods of manufacture. In one embodiment, the bit is assembled by forming the bit, including a bit body and a plurality of cutting components; introducing a wear detector into the bit; and providing a module to monitor the wear detector and generate an indication of bit wear. The wear detector may be a witness material that may change a characteristic of at least a portion of the bit. The module may detect when the witness material is separated from the bit. The wear detector may be introduced during or after formation of the bit. The bit wear may be displayed for an operator.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: June 24, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Sorin G. Teodorescu, Terry Hunt
  • Publication number: 20140116778
    Abstract: Method comprising the steps of obtaining a sample of a return drilling fluid, the return drilling fluid containing a tagged detectable additive, the tagged detectable additive comprising a polymer comprising at least one chemical tag bonded to the polymer; and determining a concentration of the tagged detectable additive in the return drilling fluid based on a spectroscopic signal of the sample. The tagged detectable additive may include a polymer comprising at least one chemical tag bonded to the polymer.
    Type: Application
    Filed: October 30, 2012
    Publication date: May 1, 2014
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Jay Paul Deville, Phillip Wayne Livanec, Sherif Eldin
  • Patent number: 8627902
    Abstract: A method for estimating a depth from which cuttings have been recovered from a well may include varying a parameter of one or more marking agents added into a drilling fluid circulated into the well and recovering the cuttings from the well. The depth may be estimated by estimating a value associated with the marking agent that marks the cuttings. A system for estimating a depth from which cuttings have been recovered from a well includes at least one marking agent configured to mark the cuttings and a marking agent dispensing device configured to add the at least one marking agent into a drilling fluid circulated into the well. The marking agent dispensing device may be further configured to vary a parameter of the at least one marking agent.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: January 14, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Aaron C. Hammer, Dennis K. Clapper
  • Patent number: 8172007
    Abstract: A system and method for releasing a marker within a wellbore. The system and method includes a sensor that detects movement or a position of the marker within the wellbore. The marker may be released in drilling fluid, for example, and may travel from the surface to the drill bit and return to the surface with cuttings. As an example, the markers are used to determine the flow of cuttings within the wellbore.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: May 8, 2012
    Assignee: IntelliServ, LLC.
    Inventors: Lee Dolman, Louise Bailey, Ashley B. Johnson, Alistair Oag
  • Patent number: 8006781
    Abstract: A method of monitoring the wear of drill bits for drilling wells in earth formations, several embodiments of an improved drill bit for drilling a well in an earth formation, and methods of manufacture. In one embodiment, the bit is assembled by forming the bit, including a bit body and a plurality of cutting components; introducing a wear detector into the bit; and providing a module to monitor the wear detector and generate an indication of bit wear. The wear detector may be a witness material that may change a characteristic of at least a portion of the bit. The module may detect when the witness material is separated from the bit. The wear detector may be introduced during or after formation of the bit. The bit wear may be displayed for an operator.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: August 30, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Sorin G. Teodorescu, Terry Hunt
  • Publication number: 20110088947
    Abstract: The present invention relates to a process and related apparatus for determining the presence and/or quantity of H2S in the drilling debris of a subsoil layer comprising the following working steps: recovering the drilling debris of a layer; degassing the drilling debris from the previous recovery step, and separating a gaseous phase from said debris; clearing the gas released in the step of degassing, and conveying towards an H2S detector; determining the possible presence and/or quantity of H2S in the gaseous phase from the steps of degassing and clearing by means of a suitable means of detection; possible repetition of the previous phases at two layers, at least of the subsoil at different levels of depth in relation to the surface, with consequent determination of a distribution profile of H2S in the subsoil.
    Type: Application
    Filed: October 18, 2010
    Publication date: April 21, 2011
    Inventor: ANTONIO CALLERI
  • Publication number: 20100193184
    Abstract: A system and method for releasing a marker within a wellbore is provided. The system and method includes a sensor that detects movement or a position of the marker within the wellbore. The marker may be released in drilling fluid, for example, and may travel from the surface to the drill bit and return to the surface with cuttings. As an example, the markers are used to determine the flow of cuttings within the wellbore.
    Type: Application
    Filed: February 2, 2009
    Publication date: August 5, 2010
    Inventors: Lee Dolman, Louise Bailey, Ashley B. Johnson, Alistair Oag
  • Publication number: 20100044034
    Abstract: Downhole systems and methods including tags configured to provide distinguishable identifiers are set for selective release to a subsurface location. Sources/sensors in the wellbore are activated to detect the tags at a subsurface location, and signal data associated with the detected tags is conveyed to the surface.
    Type: Application
    Filed: October 8, 2009
    Publication date: February 25, 2010
    Inventors: Louise Bailey, Ashley Bernard, Alistair William Oag, LEE DOLMAN
  • Patent number: 7635033
    Abstract: A downhole abrading tools has a body with a first end for connection with a rotating component of a drill string, and a cutting end for rotation in unison with the body, the cutting end having an abrading matrix containing an abrasive material for rotating engagement with an object within the well. The downhole abrading tool also includes a passage through the tool for circulating a drilling fluid. The abrading matrix includes at least one taggant embedded within the abrading matrix capable of being released by the abrading matrix into the downhole location due to wear on the abrasive material and transported to the surface location along with the drilling fluid for detection. When the taggant is released due to excessive wear, the taggant is carried from the downhole location in the well to the surface of the well where it can be detected by the operator of the tool.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: December 22, 2009
    Assignee: Baker Hughes Incorporated
    Inventor: Gerald Lynde
  • Patent number: 7565928
    Abstract: A downhole abrading tools has a body with a first end for connection with a rotating component of a drill string and a cutting end for rotation in unison with the body. The downhole abrading tool also includes a passage through the tool for circulating a drilling fluid. Disposed within the drilling fluid passageway is a taggant injection assembly having one or more taggants disposed therein that facilitates injection of taggants into the drilling fluid upon the cutting end experience excessive wear. The taggants are then transported to the surface location along with the drilling fluid for detection by the operator of the downhole abrading tool.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: July 28, 2009
    Assignee: Baker Hughes Incorporated
    Inventors: Gerald Lynde, Darrin L. Willauer
  • Publication number: 20090050369
    Abstract: A method for determining a property of formations surrounding an earth borehole being drilled with a drill bit at the end of a drill string, using drilling fluid that flows downward through the drill string, exits through the drill bit, and returns toward the earth's surface in the annulus between the drill string and the periphery of the borehole, including the following steps: obtaining, downhole near the drill bit, a pre-bit sample of the mud in the drill string as it approaches the drill bit; obtaining, downhole near the drill bit, a post-bit sample of the mud in the annulus, entrained with drilled earth formation, after its egression from the drill bit; implementing pre-bit measurements on the pre-bit sample; implementing post-bit measurements on the post-bit sample; and determining a property of the formations from the post-bit measurements and the pre-bit measurements.
    Type: Application
    Filed: October 29, 2008
    Publication date: February 26, 2009
    Inventors: Julian J. Pop, Reza Taherian, Martin E. Poitzsch, Jacques R. Tabanou
  • Patent number: 7464771
    Abstract: A downhole abrading tools has a body with a first end for connection with a rotating component of a drill string, and a cutting end for rotation in unison with the body, the cutting end having an abrading matrix containing an abrasive material for rotating engagement with an object within the well. The downhole abrading tool also includes a passage through the tool for circulating a drilling fluid. The abrading matrix includes at least one taggant embedded within the abrading matrix capable of being released by the abrading matrix into the downhole location due to wear on the abrasive material and transported to the surface location along with the drilling fluid for detection. When the taggant is released due to excessive wear, the taggant is carried from the downhole location in the well to the surface of the well where it can be detected by the operator of the tool.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: December 16, 2008
    Assignee: Baker Hughes Incorporated
    Inventor: Gerald Lynde
  • Patent number: 7410011
    Abstract: The extent of invasion of a water-based drilling fluid into a formation may be determined using at least two tracers where one is deuterium oxide and the other is a water-soluble tracer. One such method includes introducing a drilling fluid having an aqueous phase and known concentrations of a water-soluble tracer and deuterium oxide into a well drilled into a fluid-producing formation; obtaining a sample of the fluid from the fluid-producing formation at a location adjacent to the well; determining the concentrations of the deuterium oxide and water-soluble tracer in the sample; and calculating the deuterium oxide concentration within the fluid producing formation based on the known and determined concentrations of the water-soluble tracer and deuterium oxide in the drilling fluid and in the sample.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: August 12, 2008
    Assignee: Core Laboratories LP
    Inventor: King Anderson
  • Publication number: 20080000691
    Abstract: A downhole abrading tools has a body with a first end for connection with a rotating component of a drill string and a cutting end for rotation in unison with the body. The downhole abrading tool also includes a passage through the tool for circulating a drilling fluid. Disposed within the drilling fluid passageway is a taggant injection assembly having one or more taggants disposed therein that facilitates injection of taggants into the drilling fluid upon the cutting end experience excessive wear. The taggants are then transported to the surface location along with the drilling fluid for detection by the operator of the downhole abrading tool.
    Type: Application
    Filed: July 31, 2006
    Publication date: January 3, 2008
    Inventors: Gerald Lynde, Darrin L. Willauer
  • Publication number: 20080000690
    Abstract: A downhole abrading tools has a body with a first end for connection with a rotating component of a drill string, and a cutting end for rotation in unison with the body, the cutting end having an abrading matrix containing an abrasive material for rotating engagement with an object within the well. The downhole abrading tool also includes a passage through the tool for circulating a drilling fluid. The abrading matrix includes at least one taggant embedded within the abrading matrix capable of being released by the abrading matrix into the downhole location due to wear on the abrasive material and transported to the surface location along with the drilling fluid for detection. When the taggant is released due to excessive wear, the taggant is carried from the downhole location in the well to the surface of the well where it can be detected by the operator of the tool.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 3, 2008
    Inventor: Gerald Lynde
  • Patent number: 7178590
    Abstract: Improved well fluids that include hollow particles, and methods of using such improved well fluids in subterranean cementing operations are provided. Also provided are methods of cementing, methods of reducing annular pressure, and well fluid compositions. While the compositions and methods of the present invention are useful in a variety of subterranean applications, they may be particularly useful in deepwater offshore cementing operations.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: February 20, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Richard F. Vargo, Jr., James F. Heathman
  • Patent number: 7026950
    Abstract: The present invention provides a method and apparatus for generating one or more than one physically detectable physical influence changes to control or manipulate a down hole device. The present invention intercepts existing control signals to various controllers on the rig and superimposes an encoded command on these existing control signals. The controllers comprise of motor drives, choke controllers, acoustic pulse generators, tracer injectors and other controllers that are used to generate a physically detectable changes in the rig environment. The encoded command acting on existing or new controllers generates a perceptible change in a physical parameter such as a variation in drilling mud pressure, a variation in drill string rotation speed, a variation is weight on bit, generation of acoustic pulse, or a variation in tracer injection properties.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: April 11, 2006
    Assignee: Varco I/P, Inc.
    Inventors: Mallappa I. Guggari, Keith Womer
  • Patent number: 7009198
    Abstract: A method of detecting a non-fixed object created during hole drilling operations on a system (12) includes applying a light emitting lubricant (25) to a drill bit (37) of a hole-drilling device (31). The light emitting lubricant adheres to foreign object debris 10 that is created during the hole drilling operations. The foreign object debris 10 can include shavings (29), portions of the drill bit (37), or the entire drill bit (37). The objects are illuminated with an object illuminator (16). At least one of the objects (10) is determined to be a nonmember within a known pattern of objects and is identified to be a non-fixed object in response to illumination of the objects.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: March 7, 2006
    Assignee: The Boeing Company
    Inventors: Greg L. Benfer, Daniel E. Wagoner, Michael L. Taylor, John D. Fitts, John C. Clayton, Lynn E. Johnson
  • Patent number: 6908262
    Abstract: A system for driving a large diameter caisson into the ground, comprising a crane assembly, a plurality of vibratory devices, a clamp assembly, a suspension assembly, and a timing system. Each vibratory device generates a vibratory force. The clamp assembly rigidly secures each of the vibratory devices to one of a plurality of predetermined angularly spaced locations about the caisson. The suspension assembly connects the vibratory devices to the crane assembly such that transmission of vibratory forces from the vibratory devices to the crane assembly is inhibited. The timing system operatively connects the plurality of vibratory devices to synchronize the vibratory forces generated thereby.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: June 21, 2005
    Assignee: American Piledriving Equipment, Inc.
    Inventor: John L. White
  • Patent number: 6725926
    Abstract: Compositions and methods for determining the source of treatment fluids being produced from a production formation having multiple zones by introducing a treatment composition having a tracking material into a zone in the subterranean formation, and detecting the tracking material in treatment composition that flows back from the subterranean formation.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: April 27, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Jimmie D. Weaver, Johnny A. Barton
  • Patent number: 6659175
    Abstract: Disclosed is a method of determining the extent of recovery of materials injected into a oil well comprising the steps of: a) preparing a material to be injected into an oil well; b) admixing therewith a chemical tracer compound at a predetermined concentration; c) injecting the admixture into an oil well; d) recovering from the oil well a production fluid; e) analyzing the production fluid for the concentration of the chemical tracer present in the production fluid; and f) calculating the amount of admixture recovered from the oil well using the concentration of the chemical tracer present in the production fluid as a basis for the calculation. Fluorinated benzoic acids are disclosed as a preferred tracer.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: December 9, 2003
    Assignee: Core Laboratories, Inc.
    Inventors: Scott Malone, Earuch Broacha, Don Shaw, Tom Hampton
  • Publication number: 20030070843
    Abstract: An electrically conductive oil mud meeting the fluid requirements for resistive logging tools and a method for preparing such mud is disclosed. The fluid has been optimized to deliver performance in a manner as similar to that of a traditional invert emulsion drilling fluid as is practical while still maintaining the required electrical conductivity for resistivity-based logging tools. This electrically conductive oil-based mud comprises a polar synthetic ester base and complimentary ester surfactants, one being more oil soluble, the other being more water soluble. The surfactants interact synergistically to provide dense packing of micelles at the palisade layer. This fluid is oil-wetting to solids, and in general behaves like a traditional oil mud.
    Type: Application
    Filed: August 27, 2001
    Publication date: April 17, 2003
    Inventor: Carl Joseph Thaemlitz
  • Patent number: 6374668
    Abstract: A gas analyzer for an oil drilling rig normally flows gas captured from a mud pit source through parallel paths from the gas source to a total gas analyzer. One of the paths is a loop path. Periodically the loop path is switched from the source to the total gas analyzer and connected to a path from an air supply to a chromatograph. After a short time during which the gas from the loop path is transferred to the chromatograph then the loop path is switched back to the original parallel path. This arrangement permits a small instrument to perform both the functions of total gas analyzer and chromatograph.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: April 23, 2002
    Inventor: Dean John Richards
  • Patent number: 6125786
    Abstract: The invention provides a warning to the excavation above a pipe, conduit or cable laid underground by a service utility by the directional drilling method by providing a coloured area of drilling mud and/or soil about the pipe, conduit or cable. A colouring material is added to the drill fluid during the direct drilling operation which then colours the drill mud and/or soil about the pipe, conduit or cable.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: October 3, 2000
    Inventors: Gary Wayne Jarmyn, Robert Schutz
  • Patent number: 5277263
    Abstract: In a well drilling operation (10), drilling fluid (70) is used to remove rock cuttings (68) and associated formation fluids released by the drill bit (84) and transport them to the surface. At the surface, a portion of these cuttings and fluids is extracted from the drilling fluid (70) for analyses. The resulting data are used in formation evaluation. This method shows how to determine the concentrations of specific formation fluids in the drilling fluid by adding and maintaining a select foreign substance of controlled concentration to the drilling fluid as a reference fluid (64), and factoring the returned formation fluids by the reference fluid. The method also shows how the technique is used as a means to assure quality control of the measuring system and as a non-disruptive means to measure lag.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: January 11, 1994
    Inventor: Randall M. Amen
  • Patent number: 5140527
    Abstract: In the rotary drilling of oil wells a drilling mud is used both to transport the cuttings up to the surface and to impose an hydrostatic pressure on the walls of the borehole. For these functions the mud must for example have an acceptable viscosity and density. It is therefore important to monitor the characteristics of the mud, and to keep them within certain limits. Only recently, however, has drilling practice recognized the importance of monitoring the mud's ionic composition. The various techniques proposed involve separation of the mud into liquid and solid portions, and analysis of these. Though they have proven useful, yet there are a number of problems. For example, the separation has not always been easy, and the available techniques often may not satisfactorily remove the fines.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: August 18, 1992
    Assignee: Schlumberger Technology Corporation
    Inventors: Timothy Jones, Trevor Hughes, Philip Fletcher
  • Patent number: 5027379
    Abstract: A method of determining the invasion of drilling mud filtrate into a core sample from a borehole in a subterranean rock formation, comprising using a drilling mud which forms a filter cake during coring of the borehole thereby to limit invasion of drilling mud solids into the subterranean rock to an extent less than invasion of the base fluid in which the mud solids otherwise are normally suspended, dissolving a dopant in the base fluid of the drilling mud to form a solution having an X-ray attenuation characteristic different from the X-ray attenuation characteristic of the connate fluids in the subterranean formation, obtaining a core sample from the borehole using the doped drilling mud with the dopant remaining in solution in the base fluid under subterranean conditions at the core sample depth, scanning the core sample with a computed tomography scanner to determine the attenuation characteristics at a plurality of points in a cross-section in the core sample, and determining from the attenuation charact
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: June 25, 1991
    Assignee: BP America Inc.
    Inventors: Patricia K. Hunt, Bernard Zemel
  • Patent number: 4987960
    Abstract: A method of determining dilution of a well bore fluid, such as a drilling fluid, comprising preparing a drilling fluid having a known concentration of bromide ion, using the drilling fluid, recovering a sample of the used drilling fluid, determining quantitatively the concentration of bromide ion in the used drilling fluid, comparing the concentration of bromide ion in the sample drilling fluid with the known concentration of bromide ion in the drilling fluid and determining the dilution of the drilling fluid.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: January 29, 1991
    Assignee: Baroid Technology, Inc.
    Inventor: Roy K. Darlington
  • Patent number: 4904603
    Abstract: The invention in one aspect provides a method of testing drilling mud in use which comprises periodically sampling the circulating mud and analyzing its aqueous filtrate at the rig site by ion chromatography for selected positive and negative ions; one or more other parameters of the sampled mud and/or mud filtrate (e.g. pH, temperature) may also be measured; preferably the composition of the mud filtrate thus monitored is interpreted to indicate downhole interactions, with the composition of the mud supplied to the hole being adjusted to or towards the optimum as drilling proceeds. The invention also provides a method in which the solids of the periodically sampled mud are analyzed at the rig site, e.g. for sorbed ions and/or for cation exchange capacity; the values so obtained are preferably combined with those for the mud filtrate analysis and used in the diagnosis of downhole conditions for adjustment of the composition of freshly supplied mud.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: February 27, 1990
    Assignee: Schlumberger Technology Corporation
    Inventors: Timothy G. J. Jones, Trevor L. Hughes
  • Patent number: 4807469
    Abstract: For monitoring drilling mud circulation there is incorporated in the supply mud a known amount or concentration of at least one tracer ion which is substantially non-interactive with the other mud components and with the strata drilled, and the return or circulatory mud is analyzed at the rig site (preferably by ion chromatography) for the non-interactive ion(s) to give an indication or annular dispersion. Preferably at least two tracer ions (e.g. a tracer compound providing a non-interactive cation and non-interactive anion) are used, these being analyzed independently in the return or circulatory mud to give separate checks on annular dispersion. Preferably the tracer is injected discontinuously into the supply mud, in spaced discrete relatively concentrated doses, and the residence time distribution of the tracer is plotted for each dose.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: February 28, 1989
    Assignee: Schlumberger Technology Corporation
    Inventor: Christopher Hall
  • Patent number: 4708212
    Abstract: Lag-determining method and apparatus which provides for determination of and an indication of when borehole cuttings from preselected depths arrive at the surface of the earth is disclosed and includes devices for inputting the value of the lag strokes and the predetermined drilling depth increments. A signal representative of the actual drilling depth is provided to a computer circuitry. Counter circuitry accumulates a count of the strokes of the positive displacement mud pump. Adder circuitry sums the lag strokes and the accumulated count of the mud pump. Comparator circuitry provides an output when the compared values of the accumulated number of strokes of the positive displacement mud pump equals the sum of the lag strokes and the strokes of the positive displacement mud pump at a predetermined depth plus the depth increment. Visual and audio indications provide notification of the arrival of borehole cuttings from preselected depths.
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: November 24, 1987
    Assignee: TTE Holding Corp.
    Inventors: James A. McAuley, Susan G. Eppler
  • Patent number: 4635735
    Abstract: An oil well drilling rig (10) recirculates drilling mud which is analyzed continuously by pumping it through a gas separation unit (72) where the gases in the mud become separated and mixed with a carrier gas and are conveyed to gas analyzing devices (196) where the concentration of the different hydrocarbon components of the gases in the mud are continuously measured and the signals representative of these measurements are processed together with mud flow rate, and the carrier gas flow rate or the sample gas flow rate signals in a signal processor (64) to provide a continuous log of gas component concentration during drilling.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: January 13, 1987
    Assignee: Schlumberger Technology Corporation
    Inventor: Donald J. Crownover
  • Patent number: 4630243
    Abstract: Measurement while drilling apparatus for detecting and communicating information relative to downhole parameters and/or characteristics of the earth strata via an electrically conductive drill string composed of a plurality of lengths of metallic pipe connected end-to-end in series and through which a drilling fluid is caused to flow and then return to the surface through the well cavity formed between the exterior wall of the drill string and the interior wall of the well comprising a DC voltage supply for establishing a unidirectional biasing current passing through the electrically conductive drill string, drill bit and surrounding earth strata, a colloidal suspension of ferro-magnetic particles coated with a non-conductive coating forming a part of the drilling fluid and carried by the drilling fluid through the well cavity wherein the ferromagnetic particles are caused by the magnetic field to migrate toward the outer surface of the drill string and to form an insulative coating thereon, a downhole modul
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: December 16, 1986
    Assignee: MacLeod Laboratories, Inc.
    Inventor: Norman C. MacLeod
  • Patent number: 4495803
    Abstract: A method for monitoring efficacy of removal of cuttings generated during drilling of a well is disclosed which features injection of artificial cuttings into the well-drilling fluid at a controlled rate and monitoring the rate of return of the artificial cuttings in the return drilling fluid stream. The relative rate of return with respect to the rate of injection is indicative of the efficacy of removal of the cuttings generated in the drilling process.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: January 29, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Roy D. Beasley, James H. LaGrone
  • Patent number: 4447340
    Abstract: In a method of tracing a well drilling mud by determining the concentration of a tracer ion in samples of filtrate from a drilling mud which contains a predetermined concentration of the tracer ion, the improvement wherein the tracer ion is the acetate ion and is present in the drilling mud in a concentration of about 1.10.sup.-3 to about 5.10.sup.-2 ions per liter.
    Type: Grant
    Filed: June 22, 1982
    Date of Patent: May 8, 1984
    Assignee: Compagnie Francaise des Petroles
    Inventor: FeJean-Jacques
  • Patent number: 4401169
    Abstract: A drop device, method and article of manufacture used in measuring lagtime in the drilling of a well. A unique container with calcium carbide is inserted upwardly by its guide end into the open end of a pin connection prior to its threaded assembly into a lower box connection on drill pipe. The container is handled by a resilient member during placement into the pin connection and secured in place by a loop on the resilient member. The container is formed in a right cone of thin sheet material and its tapered sides are waterproof, and a disc seals the bottom or floor of the cone. The container is held in the pin connection with the floor adjacent its lower end. The pin and box connections are assembled and resumed drilling fluid flow fragments and disperses the sheet material whereby the calcium carbide converts to acetylene that is readily detected in the outflowing drilling from the well.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: August 30, 1983
    Inventor: Valiant J. Neshyba
  • Patent number: 4352674
    Abstract: In a method of tracing a well drilling mud by determining the concentration of a tracer ion in samples of filtrate from a drilling mud which contains a predetermined concentration of the tracer ion, the improvement wherein the tracer ion is the acetate ion and is present in the drilling mud in a concentration of about 1.10.sup.-3 to about 5.10.sup.-2 ions per liter.
    Type: Grant
    Filed: January 6, 1981
    Date of Patent: October 5, 1982
    Assignee: Compagnie Francaise des Petroles
    Inventor: Jean J. Fery
  • Patent number: 4312414
    Abstract: An apparatus (10) and method for obtaining oil and water saturation data from subterranean formations includes a drill bit (12) for boring a well core (26) containing the fluids. A core-catcher bowl (18) guides the well core (26) in the apparatus (10). An outer barrel (14) is attached to the drill bit (12) and contains the core-catcher (18). An inner liner (20) positioned in the outer barrel (14) receives the well core (26). An oil absorbent sponge-like member (22) is contained in the inner liner (20) with a diameter (24) for receiving the well core (26). The oil absorbent sponge-like member (22) absorbs the fluids contained in the well core (26).
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: January 26, 1982
    Assignee: Diamond Oil Well Drilling Company
    Inventor: Arthur Park
  • Patent number: 4290498
    Abstract: There is disclosed an ablatible drill comprising a soft or frangible matrix having embedded therein a multiplicity of hard inclusions which act as cutting teeth. During drilling, the matrix gradually wears away so that worn inclusions are circulated out of the hole and fresh inclusions are exposed as new cutting teeth. A plurality of joints of the ablatible drill are interconnected on the bottom of a drill string. The comminuted material of each joint of the ablatible drill provides a characteristic distinguishable from the comminuted material of adjacent joints so that in examination of the circulated returns provides an indication of which joint is then being drilled.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: September 22, 1981
    Inventors: William C. Triplett, Walter H. Brauer