Abstract: A wellbore instrument system includes a pipe string extending from earth's surface to a selected depth in a wellbore. The pipe string includes at least one of an electrical conductor and an optical fiber signal channel. A power sub including an electric power source is coupled proximate a lower end of the pipe string. At least one electrically powered wireline configurable wellbore instrument is coupled to the power source in the sub.

Abstract: A method for surveying a wellbore may include deploying a deployable wellbore survey tool into the wellbore, collecting survey data as the deployable survey tool traverses the wellbore, and determining wellbore position information based on the survey data. In one example the method may include landing the deployable wellbore survey tool on a component of a bottom hole assembly.

Abstract: A downhole tool, configured to be suspended in a borehole traversing an earth formation, includes a downhole data acquisition system placed in the tool body and electrically connected to an electric power generator at the formation surface. The downhole data acquisition system includes a sensor for detecting local conditions in the borehole, and a transducer for transducing the voltage of an input signal from high to low or low to high. The transducer having a gallium nitride or silicon carbide based discrete semiconductor device.

Abstract: A method of using a survey system comprising at least one sensor. The method comprises operating the survey system to provide information regarding the orientation of the sensor relative to the Earth at a first resolution level while the sensor is a first distance relative to the Earth's surface and operating the survey system to provide information regarding the orientation of the sensor relative to the Earth at a second resolution level while the sensor is a second distance relative to the Earth's surface. The second distance is larger than the first distance. The second resolution level is higher than the first resolution level.

Abstract: The present invention is directed a method of constructing a well and then production logging the unique well construction. More specifically, this invention is directed to a method of logging subterranean reservoirs though a unique well construction apparatus wherein the well fluid is flowed to surface via a separate conduit from the conduit where the logging operation is performed.

Abstract: Methods and apparatus for navigating a subterranean tool comprising a body member and a head member steerably associated with the body member. A determining unit is configured to determine a transversal target position of a nose of the head member relative to the body member and a steering unit is configured to steer the head member relative to the body member so that the nose of the head member is located at the transversal target position.

Abstract: Data retrieval tags, drillstring communications systems and methods, and computer programs are disclosed. The data retrieval tag includes an insulator substrate, at least one analog memory cell disposed on the insulator substrate and an antenna coupled to the analog memory.

Abstract: A fiber optic slickline. The slickline includes fiber optic communication means without full downhole power transmitting capability. Nevertheless, the slickline is configured to accommodate an axial load up to, and in excess of 2,000 lbs. Downhole tools and tool assemblies are configured with opto-electronic interfacing features so as to remain electronically compatible while also taking advantage of fiber optic communications afforded over the slickline. The slickline and tools may be employed in logging and other downhole operations in a manner that provides real time communication with substantially reduced surface equipment expense in terms of footprint and power requirements.

Abstract: A method for monitoring a fracturing operation in a target well comprising extending a seismic sensor in a tubing string to a first position in an well offset from the target well. A coolant fluid is circulated through the tubing string for a predetermined time. The tubing string is retracted to a second uphole position such that the cooled seismic sensor is exposed in the offset wellbore. A seismic signal emitted during the fracturing operation of the target well is sensed in the offset well.

Abstract: The device comprises a jet pump mounted on a pipe string and a packer. The pump body is provided with a steplike pass channel which is embodied therein and communicates with a pumped-out medium supplying channel and an active medium supplying channel which is connected to an active nozzle at the output thereof and to an annular space. The pumped-out medium-supplying channel is connected to the pipe string downstream of the steplike channel via a return valve. A sealing unit in the form of a hollow steplike cylindrical body provided with a sealing element in the top part thereof is arranged in said steplike channel. A spring-loaded steplike piston supported by an annular projection is located downstream. Holes are embodied in the unit body in front of the holes on the pump body. The piston, in the lower position thereof, closes the unit body holes.

Abstract: An assembly for downhole applications comprises has an electric motor, a pump driven by the electric motor and having a lower pump inlet and an upper pump outlet, and a deployment tube from which the assembly is suspended from and by means of which the assembly can be lowered through the well. A nonrotating hollow shaft forms a bore extending from the tube through the motor and the pump to an assembly opening at the bottom of the assembly such that a device suspended on a wireline or coiled tube may be lowered through the deployment tube and pass through the electric motor and pump to a part of the well below the pump inlet. The motor is linked outside the bore to the pump for driving the pump.

Abstract: A downhole tool for use in coiled tubing well operations. The tool includes a gamma ray detector for determining well location information for an associated coiled tubing application. The well location information may relate to well depth and/or the locating and identifying of a particular side branch or lateral leg of the well. Additionally, the gamma ray detector may be utilized to monitor dynamic well conditions in real-time such as the flow of injected fluids or the effectiveness of clean out applications via the coiled tubing.

Abstract: A fiber optic based logging assembly deliverable via coiled tubing. The downhole portion of the assembly is directed to develop a logging profile of a well by way of the fiber optic line. Thus, a downhole battery may be provided with the tool. Further, opto-electric interfaces may be provided with the assembly to convert between electrical and optical communication signals. Additionally, with the reduced profile of an optical communication line through the coiled tubing portion of the assembly, an operator may elect to perform treatment applications in real-time. That is, in certain circumstances, the operator may direct a treatment application utilizing the downhole assembly in response to the developing well profile (i.e. without first requiring that the assembly be withdrawn and replaced with a solely dedicated treatment assembly).

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.

Abstract: A well logging instrument housing includes an electrically non-conductive tube and at least one layer of fiber embedded in a matrix surrounding an exterior of the tube. The at least one fiber layer includes at least one carbon fiber. The at least one or carbon fiber is arranged to have substantially no closed loops.

Abstract: A method for logging a downhole formation in a wellbore. The method comprises drilling a wellbore with a drill bit coupled to a disconnect device. The disconnect device is then actuated to detach the drill bit from a portion of a conveyance. A logging operation is then performed between two portions of the disconnect device. The disconnect device may then be reattached.

Abstract: A geophysical sensor apparatus, system, and method for use in, for example, oil well operations, and in particular using a network of sensors emplaced along and outside oil well casings to monitor critical parameters in an oil reservoir and provide geophysical data remote from the wells. Centralizers are affixed to the well casings and the sensors are located in the protective spheres afforded by the centralizers to keep from being damaged during casing emplacement. In this manner, geophysical data may be detected of a sub-surface volume, e.g. an oil reservoir, and transmitted for analysis. Preferably, data from multiple sensor types, such as ERT and seismic data are combined to provide real time knowledge of the reservoir and processes such as primary and secondary oil recovery.

Abstract: A method of using a survey system comprising at least one sensor. The method comprises operating the survey system to provide information regarding the orientation of the sensor relative to the Earth at a first resolution level while the sensor is a first distance relative to the Earth's surface and operating the survey system to provide information regarding the orientation of the sensor relative to the Earth at a second resolution level while the sensor is a second distance relative to the Earth's surface. The second distance is larger than the first distance. The second resolution level is higher than the first resolution level.

Abstract: A system for use in a well includes downhole equipment for positioning in the well, and an optical fiber for deployment in the well, the optical fiber to extend to a location of interest in the well in proximity of the downhole equipment. An analysis unit analyzes detected light signals returned from the optical fiber that has been affected by acoustic events generated by the downhole equipment and to determine a status in the wellbore based on the analyzing.

Abstract: A well logging instrument deployment device includes a housing configured to be coupled to a pipe string. A carrier sub is disposed inside the housing and configured to move longitudinally inside the housing. At least one well logging instrument is coupled to the carrier sub. A latch is configured to retain the well logging instrument and carrier sub in a first longitudinal position along the housing such that the well logging instrument is disposed entirely inside the housing. The latch is configured to retain the well logging instrument and carrier in a second position such that at least a portion of the well logging instrument extends outwardly from the housing.

Abstract: A technique is provided to facilitate logging in a well environment. Downhole well related equipment is deployed in a wellbore with an internal, longitudinal passageway. A logging tool system is moved through the longitudinal passageway for performance of logging procedures within the wellbore below the well related equipment.

Abstract: Methods and apparatus facilitating measurement of anisotropy are disclosed. According to some aspects, anisotropy can be determined while drilling. Monopole/quadrupole interactions, as well as monitoring dipole excitations and other methods, may be used to find the principal shear directions of a formation while drilling or during wireline or other operations.

Abstract: Elastodynamic waves are generated by a tool having a hammer rotatably connected with a housing by a first hinge and an actuator arm rotatably connected with the hammer by a second hinge. An axial force applied to the actuator arm by a drive shaft and spring is translated and amplified to a radial impact force by rotation of the hammer around the first hinge. The tool may also include a stabilizer arm connected to the actuator arm by a third hinge, and connected to the housing by a fourth hinge. The housing may be an acoustic wireline tool cylinder having an opening that permits the hammer mass to extend outside the housing when rotated in a first direction. The housing may also include a second opening that permits the hammer mass to extend outside the housing when rotated in a second direction, and a third opening that permits the hammer mass to extend outside the housing when rotated between the first and second openings.

Abstract: A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. An analytic function based on a heuristic model is used to predict the measured response as a function of offset, mud density and formation density. The model may be used to provide a caliper measurement where acoustic caliper data are unreliable.

Abstract: A deployment device for controlling rate of movement of an instrument inside a conduit includes a mandrel having a coupling to affix the deployment device to the instrument and a controllable brake disposed in the mandrel, the brake controllably actuatable to maintain the mandrel and instrument at a selected speed within the conduit.

Abstract: A system for positioning a wellbore tool in a wellbore intersecting a subterranean formation includes a tag embedded in the formation using a tag insertion device. The tag may be configured to transmit a signal that includes information. A wellbore tool may utilize a tag detection device to operatively link with the tag. This operative link may provide an indication of the relative position of the tag detection device or some other information.

Abstract: Earth formations are characterized by using an array of electrodes which can measure streaming potentials in the formation, and by interpreting the data obtained by the electrodes. The electrodes are placed on a wireline tool, a LWD tool, or in a fixed manner about a completed wellbore. The measured streaming potentials are generated by drilling with an overbearing pressure, slitting the mudcake in a borehole, acid injection, or any of various other manners which causes fluid movement. The data obtained is interpreted to locate fractures, measure formation permeability, estimate formation pressure, monitor drilling fluid loss, detect abnormal pressure, etc. Particularly, a streaming potential voltage transient having a double peak profile signifies the presence of a formation fracture.

Abstract: The present invention generally relates to an apparatus and a method for conveying and operating tools into a wellbore. In one aspect, a method of performing a downhole operation in a wellbore is provided. The method includes pushing a continuous rod into the wellbore, wherein the continuous rod includes a member disposed therein. The method further includes positioning the continuous rod proximate at a predetermined location in the wellbore and performing the downhole operation. In yet another aspect, a system for performing a downhole operation in a wellbore is provided.

Abstract: In one embodiment, the present invention includes a method of logging a rod-pumped well without removing the production string of tubing (30). The logging is accomplished with a soft-coated cable (100) or a soft-faced sleeve (130) which prevents abrasion or damage to a rod-pump barrel as a logging device or sonde (110) which is lowered into the production string of the rod-pumped well after removal of the sucker rods and the pump assembly without the need to remove the production string. The soft-coated cable or soft-faced sleeve allows logging without damage to the interior surface of the production tubing thereby eliminating scratching or grooving normally associated with previous wireline logging operations.

Abstract: Subterranean oilfield high-temperature devices configured or designed to facilitate downhole monitoring and high data transmission rates with laser diodes that are configured for operation downhole, within a borehole, at temperatures in excess of 115 degrees centigrade without active cooling.

Abstract: A system for logging with wired drill pipe includes a logging tool string; an interface sub in operable communication with the logging tool string; and a wired pipe in operable communication with the interface sub and method for logging with wired drill pipe.

Abstract: A well logging fluid, and methods of using the same, include a base fluid selected from water, water-based mud, or oil-based mud, and an additive material selected from silica or cork or alike. The fluid has an impedance substantially different from that of the base fluid. Such a modified impedance helps improve the measurement accuracy.

Abstract: A method of logging a wellbore comprises drilling a first wellbore to a depth using a drilling rig and drilling a second wellbore to a depth using the drilling rig. While the second wellbore is being drilled a logging operation is conducted in the first wellbore using the drilling rig. The logging operation can be conducted in the first wellbore via a wireline logging tool.

Abstract: The present invention is directed to a method for producing gas from a subterranean formation containing a coal seam. The method includes the steps of drilling a substantially vertical well bore into the subterranean formation, which intersects the coal seam and fracturing the coal seam using a hydrajetting tool to produce at least one pair of opposed bi-wing fractures substantially along a plane of maximum stress. One or more horizontal well bores may also be drilled into the coal seam along which the coal seam can be further fractured.

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.

Abstract: A method for stimulating a reservoir formation while running a casing string into the wellbore includes the steps of: connecting a stimulation assembly to a casing string, the stimulation assembly including a packer actuator in operational connection with a packer and a logging sensor; running the casing string into the wellbore and positioning the logging assembly proximate to a selected reservoir formation; logging the reservoir formation; positioning the stimulation assembly proximate to the reservoir formation; actuating the packer to substantially isolate the reservoir formation from the wellbore; performing the stimulation operation; releasing the packers from sealing engagement with the wellbore; positioning the logging assembly proximate to the reservoir formation; logging the reservoir formation; and disconnecting the stimulation assembly from the casing string.

Abstract: A well logging instrument deployment device includes a housing configured to be coupled to a pipe string. A carrier sub is disposed inside the housing and configured to move longitudinally inside the housing. At least one well logging instrument is coupled to the carrier sub. A latch is configured to retain the well logging instrument and carrier sub in a first longitudinal position along the housing such that the well logging instrument is disposed entirely inside the housing. The latch is configured to retain the well logging instrument and carrier in a second position such that at least a portion of the well logging instrument extends outwardly from the housing.

Abstract: A system and method for logging a formation adjacent to a borehole. The system includes a conveyance member, a memory module in communication with the conveyance member, a communications module in communication with the memory module, and a logging tool in communication with the communications module, wherein the communications module is configured to facilitate communication between the memory module and the logging tool.

Abstract: A method for performing operations and for improving production in a well includes the steps of: providing radio identification devices at known locations in the well, and providing a reader device configured to read the identification devices, and to control the operations responsive to signals from the identification devices. The method also includes the steps of providing a process tool, and transporting the process tool and the reader device through the well. The reader device is programmed to control the process tool upon reception of a response signal from a selected identification device. The method can be used to perform perforating processes, packer setting processes, bridge plug setting processes, logging processes, inspection processes, chemical treating processes, and cleaning processes. In addition, the method can be performed dynamically by controlling the tool as it moves through the well, or statically by stopping the tool at a particular location within the well.

Abstract: A method for surveying a wellbore may include deploying a deployable wellbore survey tool into the wellbore, collecting survey data as the deployable survey tool traverses the wellbore, and determining wellbore position information based on the survey data. In one example the method may include landing the deployable wellbore survey tool on a component of a bottom hole assembly.

Abstract: Methods and apparatus for harvesting energy while moving a tool through a well are shown and described. The harvested energy can be used by the tool to perform work once it reaches an intended location in the well, or along the way. A considerable amount of potential energy is typically lost by oilfield tools as they move down through a borehole. Methods and apparatus described herein recover and/or store some of the energy during the downward movement of the tool.

Abstract: Methods and apparatus for navigating a subterranean tool comprising a body member and a head member steerably associated with the body member. A determining unit is configured to determine a transversal target position of a nose of the head member relative to the body member and a steering unit is configured to steer the head member relative to the body member so that the nose of the head member is located at the transversal target position.

Abstract: A method for operating a downhole tool. The method includes moving an instrument through a wellbore, and the instrument includes a first non-acoustic transponder that is adapted to detect identification codes. An identification code detected from at least one second non-acoustic transponder is compared to a reference code. The at least one second non-acoustic transponder is attached to an emplaced structure in the wellbore, and the comparison is performed when the instrument moves by the at least one second non-acoustic transponder. The downhole tool is then operated if the identification code matches the reference code. A downhole tool operation system including at least one first non-acoustic transponder emplaced in a wellbore and adapted to communicate an identification code.

Abstract: Acoustic transducers configured with integrated electronics technology are adapted to digitize signal data close to the transducer. The transducers are packaged with a reduced number of elements and sealed for exposure to harsh environments, without oil compensation. A transducer assembly includes a frame, an acoustic transducer element disposed on the frame, and an electronics module disposed on the frame and linked to the acoustic transducer element. The pressure and temperature tolerant electronics module is adapted to process a signal associated with the transducer element.

Abstract: Methods and systems for operating integrated circuits at temperatures higher than expected ambient temperatures. The heating may be of entire circuit boards, portions of the circuit boards (such as the components within a multiple-chip module) and/or single devices. Methods and related systems may be used in any high temperature environment such as downhole logging tools, and the devices so heated are preferably of silicon on insulator semiconductor technology.

Abstract: A diagnostic sleeve shifting tool. The tool may include a diagnostic implement for measuring downhole conditions in a well such as flow-rate, pressure and temperature. Where the well includes a slidable or shiftable sleeve, the tool may be employed to slide such a sleeve for controlling communication between the well and an underground production region adjacent the location of the well. In this manner real time diagnostic assessment may occur at the well location in conjunction with means to affect the sleeve position. Thus, the need to run additional subsequent procedures with additional tools for affecting the sleeve position may be eliminated. As a result, substantial time and expense may be saved in conducting such well procedures.

Abstract: The invention generally relates to an apparatus and a method for conveying and operating tools in a wellbore. In one aspect, a method of performing an operation in a wellbore is provided. The method includes running a selectively separable plug member accommodating a tool into the wellbore on a continuous rod and positioning the separable plug member adjacent a receiver member disposed in the wellbore. The method further includes manipulating the weight of the continuous rod to seat the separable plug member in the receiver member. In another aspect, a plug assembly for use in a wellbore is provided.

Abstract: A method for logging a well. Includes receiving energy with at least one array of elements coupled to a drill bit, wherein the at least one array of elements functions as an electronic array. An apparatus for logging a well includes a drill bit and at least one array of elements coupled to the drill bit, wherein the at least one array of elements functions as an electronic array.

Abstract: A system for the measurement and surface data acquisition for optical fiber sensors containing Bragg gratings for the sensing of physical parameters originated from a set of oil wells, the system including: an optical system for signal processing, the signals being originated from physical parameters sensors installed in one single or in a set of oil and/or gas wells and resulting from the reflected wavelength in response to a perturbation of the physical parameter under measurement; an electronic system for signal processing for converting the optical intensity signals originated from the optical system into electrical signals with the aid of detectors that optimize the signal/noise ratio; and an optical switcher having an interface between a) and b), for expanding the number of monitored oil wells.

Abstract: A borehole seismic acquisition tool configured for release from a stuck position within a borehole having a tool body with at least one sensor package, an anchoring arm, and anchoring arm linkage adapted to connect the anchoring arm to the tool body. The anchoring arm linkage includes a weakpoint mechanism adapted to break in response to a minimum threshold amount of breaking force being applied upon the weakpoint mechanism. The anchoring arm includes a first end adapted for contacting a borehole wall surface and a second end pivotally attached to the anchoring arm linkage. The anchoring arm also includes a movable cam removably secured to the first end via a first connector pin. The cam being at least partially rotatable about the first connector pin and configured and arranged to rotate against the borehole wall by a pulling force at a top portion of the borehole seismic acquisition tool.