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| Number | Title | Issue Date |
| 8122954 | Downhole depth computation methods and related system A method for determining depth in a wellbore uses inertial navigation in conjunction with a database having one or more measured parameters correlated with depth. The measured parameter may be the lengths of stands forming a drill string, prior survey data relating ... | 02/28/2012 |
| 8109333 | Indicator and method An indicator comprising a band having a first radial dimension; one or more protectors having a greater radial dimension and disposed sufficiently proximate the band to substantially avoid wear of the band during running of the indicator and method. ... | 02/07/2012 |
| 8074713 | Casing collar locator and method for locating casing collars A system and method to log a wellbore, comprising a logging tool adapted to be deployed in a wellbore environment, the logging tool including at least one sensor for taking a measurement of the wellbore environment. The sensor is a fiber optic sensor and the system ... | 12/13/2011 |
| 8016037 | Drilling rigs with apparatus identification systems and methods Generally, the subject matter disclosed herein is directed to devices and methods for energizing and detecting a wave-energizable apparatus on an item movable with respect to a working surface of a drilling rig. One illustrative device disclosed herein includes at l... | 09/13/2011 |
| 8016036 | Tagging a formation for use in wellbore related operations 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 ... | 09/13/2011 |
| 7828060 | Drifting tubing A method of checking for restrictions in a string of tubing formed of a plurality of tubing sections. The method involves providing a profile in the tubing string, providing a drift member adapted to engage with the profile, passing the drift member through the tubi... | 11/09/2010 |
| 7819189 | Method and system for determining plunger location in a plunger lift system A plunger has a transmitter that produces signals as the plunger moves in a well. The signals are pulses that are produced at a constant interval. The plunger signals are detected and used to determine the location, direction of travel and speed of the plunger in th... | 10/26/2010 |
| 7810564 | Memory logging system for determining the condition of a sliding sleeve A memory logging system for determining the status of a sliding sleeve valve disposed within the borehole. The sliding sleeve contains signal inducing devices. A logging tool is conveyed through the sliding sleeve and time intervals between sensor excursions induced... | 10/12/2010 |
| 7779912 | Well tool having magnetically coupled position sensor A well tool having a magnetically coupled position sensor. In operation of a well tool, relative displacement is produced between members of the well tool. A magnetically coupled position sensor includes one magnet assembly attached to a member for displacement ther... | 08/24/2010 |
| 7770639 | Method for placing downhole tools in a wellbore Downhole tools attached to a wireline are frequently used to perform well operations at a selected depth. However, the downhole tools may be placed at the incorrect depth if the well operator fails to account for creep, i.e. the movement of downhole tools after the ... | 08/10/2010 |
| 7762327 | Acoustically measuring annulus probe depth A casing annulus is remediated by inserting a hose into a casing annulus, the hose having a nozzle on its lower end. An acoustic signal is directed into the annulus. A sensor in the hose receives the acoustic signal and transmits data from the sensor to the surface.... | 07/27/2010 |
| 7673683 | Well tool having magnetically coupled position sensor A well tool having a magnetically coupled position sensor. In operation of a well tool, relative displacement is produced between members of the well tool. A magnetically coupled position sensor includes one magnet assembly attached to a member for displacement ther... | 03/09/2010 |
| 7600566 | Collar locator for slick pump A method and apparatus for actuating a downhole tool at a desired location. A reciprocating hydraulic slickline pump with a locator is provided. The pump comprises a pump member. The pump member is reciprocated axially by slickline in order to form an upstroke and d... | 10/13/2009 |
| 7588082 | Downhole tool position sensing system A downhole tool includes a mandrel, an inner sleeve, and an outer housing. The inner sleeve being rotatable relative to the outer housing and the mandrel being rotatable relative to the inner sleeve and the outer housings. The outer surface of the inner sleeve inclu... | 09/15/2009 |
| 7588083 | Method and system for scanning tubing An instrument, such as a wall-thickness, rod-wear, or pitting sensor, can monitor tubing as a field service crew extracts the tubing from an oil well or inserts the tubing into the well. A digital system can process data from the instrument to improve the data's fid... | 09/15/2009 |
| 7472749 | Drifting tubing A method of checking for restrictions in a string of tubing formed of a plurality of tubing sections. The method involves providing a profile in the tubing string, providing a drift member adapted to engage with the profile, passing the drift member through the tubi... | 01/06/2009 |
| 7458421 | Methods and systems for robust and accurate determination of wireline depth in a borehole This invention relates in general to measuring depth of well-tools, such as logging tools or the like, in a borehole. Embodiments of the present invention may provide for disposing transponders along a wireline that may be used to suspend and move the well-tool in t... | 12/02/2008 |
| 7424912 | Wellbore treatment apparatus and method A treatment apparatus and method for wellbore instability is described including a caliper with one or more radially extending arms which are capable of extending and retracting movement in a radial direction and a fluid supply facility to deliver treatment fluid fr... | 09/16/2008 |
| 7404445 | Perimetrically loading collet A perimetrically acting collet includes a body and at least one mating profile opening in the body. A plurality of resilient members located adjacent one side of the at least one mating profile opening and a profiled body is biased perimetrically by the plurality of... | 07/29/2008 |
| 7403857 | Enhanced measurement of azimuthal dependence of subterranean parameters with filters and/or discretely sampled data A method for estimating an azimuthal dependence of a parameter of a borehole using logging sensor measurements acquired as a function of azimuth of the logging sensors is provided. The method includes acquiring at least one logging sensor measurement and a correspon... | 07/22/2008 |
| 7400263 | Method and system for performing operations and for improving production in wells 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 op... | 07/15/2008 |
| 7389183 | Method for determining a stuck point for pipe, and free point logging tool A method and apparatus for determining the location of stuck pipe are provided. In one embodiment, the method includes the step of attaching a free point logging tool to a working line such as a slickline or wireline. The free point logging tool has a freepoint sens... | 06/17/2008 |
| 7383883 | Apparatus and method to detect a signal associated with a component An apparatus for use in a well comprises a structure having at least a first portion formed of a first material, and a detector to detect a signal associated with a component located either within or beyond the structure. The first material has a property that reduc... | 06/10/2008 |
| 7385523 | Apparatus and method for downhole well equipment and process management, identification, and operation 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... | 06/10/2008 |
| 7363989 | Device for a pulling tool for use in pipes and boreholes for the production of oil and gas A pulling tool for use in the placing of equipment and acquisition of data from pipes and boreholes used in the production of oil and gas. For this purpose the tool is constructed round a central, elongate, cylindrical main element (1) to which there are arra... | 04/29/2008 |
| 7363967 | Downhole tool with navigation system A downhole tool for use in a well bore comprises an onboard navigation system for determining the location of the tool within the well bore, wherein the tool is moved along at least a partial length of the well bore via an external force. A method of locating a down... | 04/29/2008 |
| 7357179 | Methods of using coiled tubing inspection data Methods for generating geometric databases of coiled tubing inspection data and using the data in job design, real time monitoring and automated feedback control of operations are described. One method includes creating a grid of spatial positions on a length of coi... | 04/15/2008 |
| 7353869 | System and method for utilizing a skin sensor in a downhole application 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. ... | 04/08/2008 |
| 7350588 | Method and apparatus for supporting a tubular in a bore A method of supporting a tubular within a bore including the steps of at least partially expanding a sleeve into contact with a bore wall to secure the sleeve within the bore, and engaging a portion of the tubular to be supported with the sleeve to provide hanging s... | 04/01/2008 |
| 7350593 | Electronically controlled earth drilling rig An electronic control, for automated earth drilling using a pneumatic hammer-operated bit, preliminarily weighs a drill string, and, during drilling, automatically maintains a desired weight on the bit, and also maintains a constant rate of drilling progress by regu... | 04/01/2008 |
| 7347261 | Magnetic locator systems and methods of use at a well site Magnetic locator systems and methods of using same at a wellhead are described. The magnetic locator systems include a magnetic field generator on an oilfield tool component, such as a deployment bar, adapted to be moved through an oilfield pressure control componen... | 03/25/2008 |
| 7331386 | Anchor arm for seismic logging tool 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 a... | 02/19/2008 |
| 7316272 | Determining and tracking downhole particulate deposition Methods and apparatus provide for the characterization of injected fluid flow within a wellbore. Particular embodiments include injecting a slurry comprising a particulate material and a carrier fluid into an isolated wellbore annulus and acquiring composite density... | 01/08/2008 |
| 7303010 | Apparatus and method for an autonomous robotic system for performing activities in a well An autonomous robot performs maintenance and repair activities in oil and gas wells, and in pipelines. The robot uses the well and pipeline fluids to provide most of the energy required for the its mobility, and to charge a turbine from which it may recharge batteri... | 12/04/2007 |
| 7302346 | Data logging A device and method for determining a geophysical characteristic of a borehole using at least one logging device is provided, wherein the at least one logging device includes at least one sensing device. The method includes associating the at least one sensing devic... | 11/27/2007 |
| 7284606 | Downhole position locating device with fluid metering feature A tool for multiple purposes features one ore more dogs that can engage a collar groove or restriction sub in the wellbore. The dogs are extendable through a sleeve biased in opposed directions and are supported from a mandrel. The dogs can retract into mandrel groo... | 10/23/2007 |
| 7283061 | Method and system for performing operations and for improving production in wells 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 op... | 10/16/2007 |
| 7278492 | Expandable liner hanger system and method A liner hanger assembly seals with casing 22 and supports a liner 90 within a well. The tubular liner hanger body 50 and a tubular expander 40 may be positioned downhole at a desired depth on a running tool. An actuator assembly 12, 24... | 10/09/2007 |
| 7274989 | Borehole equipment position detection system It is important to know the precise position of equipment when testing of the BOP, testing the wellhead, flow testing the well, kick control, well circulation and testing of spool trees between the wellhead and the BOP. Accordingly, there is provided a system for de... | 09/25/2007 |
| 7246663 | Positive engagement indicator for wireline fishing operations A device and method for retrieving a tool string from downhole locations through the use of one or more engagement sensors. The one or more engagement sensors are activated by the tool string engaging an overshot device. The one or more engagement sensor may be mech... | 07/24/2007 |
