| Patent Number |
Title Of Patent |
Date Issued |
| RE39970 |
Downhole adjustable bent housing for directional drilling |
January 1, 2008 |
| The present invention provides a hydraulically actuated downhole adjustable bent housing for use in directional drilling of bore holes and wells that allows adjustment of the housing from aligned to a bent configuration without raising or lowering the drillstring. The present inventi |
| RE39583 |
Multiple well tool control systems in a multi-valve well testing system having automatic control |
April 24, 2007 |
| A multi-valve well testing system adapted to be disposed downhole in a borehole, includes a plurality of valves and a plurality of well tool control systems connected, respectively, to the plurality of valves and further includes an automatic control mode feature. The well testing sy |
| RE38578 |
Method and apparatus for cementing a well |
September 14, 2004 |
| A method of cementing a well permitting a reduction in the degree of diameter reduction of casing or liners required, and not requiring excessively large initial conductor casing, is described. The method is characterized by provision of an enlarged wellbore and a novel liner structu |
| RE38129 |
Phase change analysis in logging method |
June 3, 2003 |
| An improved method of fluid analysis in the borehole of a well. A fluid sampling tool is fitted with a pumpout module that can be used to draw fluids from the formation, circulate them through the instrument, and then expel this fluid to the borehole. It has been determined that certain |
| RE36012 |
Accelerator-based methods and apparatus for measurement-while-drilling |
December 29, 1998 |
| Measurement-while-drilling apparatus includes a 14 MeV neutron accelerator, a near-spaced neutron detector which primarily senses source neutrons and whose output is proportional to source strength, one or more intermediately-spaced epithermal neutron detectors eccentered against the |
| RE34975 |
Ultrasonic measurement apparatus |
June 20, 1995 |
| Pulse echo apparatus and methods are disclosed for measuring characteristics of a borehole while it is being drilled. A component of a bottomhole assembly, preferably a drilling collar, is provided with one or more ultra-sonic transceivers. A pulse echo sensor of the transceiver is p |
| RE32831 |
Apparatus for sealing a well casing |
January 17, 1989 |
| A method and apparatus for sealing a well casing, when a length of production tubing is disposed within the well casing, utilizes a sealing means having a first diameter less than the diameter of the production tubing, and the sealing means is compressible to a second diameter which |
| RE32564 |
Apparatus for determining the resistivity of a subsurface earth formation at different lateral d |
December 15, 1987 |
| Apparatus for investigating subsurface earth formations traversed by a borehole comprising a system of electrodes consisting of a central electrode A.sub.0 and four pairs of electrodes M.sub.1 -M'.sub.1, M.sub.2 -M'.sub.2, A.sub.1 -A'.sub.1, A.sub.2 -A'.sub.2 respectively short-circu |
| RE32336 |
Method and apparatus for conducting logging or perforating operations in a borehole |
January 27, 1987 |
| A method and apparatus for conducting logging or perforating operation in a borehole, particularly a deviated borehole, includes lowering a length of drill pipe having the well-logging tool, or well bore perforator, releasably mounted thereon into the borehole. An extension member, which |
| RE31155 |
Pump down system for placing and retrieving subsurface well equipment |
February 22, 1983 |
| A pump-down assembly for positioning and retrieving subsurface well equipment in a side pocket mandrel. The assembly is articulated to permit it to move through tubing curves and includes positioning and orienting means. Spring loaded latches in the positioning means mate only with c |
| RE30055 |
Apparatus for transmitting well bore data |
July 24, 1979 |
| In the representative embodiments of the present invention described herein, a drilling mud is circulated through a drill string at a sufficient rate to effectively operate an impeller-driven electrical generator arranged on a tool coupled in the drill string for supplying power to d |
| RE29734 |
Well bore data-transmission apparatus with debris clearing apparatus |
August 15, 1978 |
| In the representative embodiment of the apparatus of the present invention disclosed herein, a first ported or grooved cylindrical member is coaxially disposed within a drill string for directing drilling fluids flowing through the apparatus along one or more selected flow paths .[.t |
| RE29638 |
Pressure controlled test valve system for offshore wells |
May 23, 1978 |
| Methods and apparatus for performing a drill stem test of an offshore well utilizing a pressure controlled test valve. The test valve includes a valve element having a transverse pressure area with the high pressure side exposed to the pressure of fluids in the well annulus and the low |
| D461703 |
Reel and hose assembly |
August 20, 2002 |
|
| D443560 |
Roadway trailer for coiled tubing reel |
June 12, 2001 |
|
| D442891 |
Trailer for a coiled tubing reel |
May 29, 2001 |
|
| D436519 |
Coiled tubing guide for a coiled tubing reel |
January 23, 2001 |
|
| 7414391 |
Electromagnetic logging tool calibration system |
August 19, 2008 |
| Techniques for calibrating an electromagnetic logging tool equipped with a plurality of antennas, with at least one antenna having its axis at an angle with respect to a tool axis, include disposing a test loop about the tool such that an axis of the tool and a plane on which the test lo |
| 7413021 |
Method and conduit for transmitting signals |
August 19, 2008 |
| An expandable tubular sleeve having utility for lining a downhole tubular member includes a tubular body having a portion that is predisposed to initiate expansion thereof under the application of internal fluid pressure. The predisposed portion of the body may be a plastically-defor |
| 7413015 |
Perforating gun |
August 19, 2008 |
| A system and method of generating one or more perforations in a well casing while simultaneously restricting burr formation is provided. A perforating gun assembly includes a gun housing having an outer surface designed to engage the inner surface of the well casing. At least a porti |
| 7413011 |
Optical fiber system and method for wellhole sensing of magnetic permeability using diffraction |
August 19, 2008 |
| Systems and methods for optically determining casing collar and/or corrosion locations within boreholes, using the diffraction effect of Faraday crystals through which depolarized continuous light is transmitted within optical fibers. |
| 7412117 |
Apparatus and methods for distributed temperature sensing |
August 12, 2008 |
| A sensing fibre for use in a distributed temperature sensing system comprises an optical fibre to be deployed in a measurement region in which a temperature measurement is to be made, which incorporates a reflective element, such as a join between portions of fibre, and a coiled fibr |
| 7411399 |
Electromagnetic survey system with multiple sources |
August 12, 2008 |
| Multiple sources are provided for a transmitter cable for use in electromagnetic surveying. The transmitter cable includes a dipole antenna comprising a pair of spaced apart electrodes mounted on their respective cables. Two antennas may be powered from each source. Alternatively, th |
| 7410934 |
Aqueous viscoelastic fluid |
August 12, 2008 |
| The invention concerns an aqueous viscoelastic fluid for use in the recovery of hydrocarbons. According to the invention, the aqueous viscoelastic fluid comprises a monomer, a dimer or an oligomer of a viscoelastic surfactant able to form a viscoelastic gel under downhole conditions, |
| 7410015 |
Expandable drill bit |
August 12, 2008 |
| An expandable drill bit comprises a body for mounting on a support string DS, a plurality of drill arms 3A, 3B, 3C, 3D, 4A, 4B, 4C, 4D coupled to the body and extending along a central longitudinal axis LL', and at least one drill arm supporting cutting elements 6A. The plurality of |
| 7409993 |
Weight spacer apparatus |
August 12, 2008 |
| A weight spacer apparatus has a carrier which is tubular in shape and a spacer tube which is also tubular in shape for insertion into the carrier. The weight spacer apparatus also has a plurality of weight bars which may be inserted into the spacer tube after the spacer tube is inser |
| 7409992 |
Perforating gun |
August 12, 2008 |
| The present invention provides an apparatus for use in perforating a well having a plurality of explosive charges. Each explosive charge is adapted to generate a perforation tunnel in the formation adjacent to the well. In one embodiment, explosive charges are oriented to create perforat |
| 7409774 |
Borehole tool |
August 12, 2008 |
| A borehole tool, comprises: a tool body; a series of arms connected to the tool body and moveable radially relative thereto; and a series of pads mounted on the arms so as to be pivotable about a radial axis relative to the tool body. By allowing pivoting of the pads about a radial axis, |
| 7408150 |
Well logging method for determining formation characteristics using pulsed neutron capture measu |
August 5, 2008 |
| A method for determining thermal capture cross-sections of formations surrounding an earth borehole, including the following steps: providing a logging device that is moveable through the borehole; transmitting, from the logging device, bursts of neutrons into the formations; detecting, |
| 7407566 |
System and method for sensing using diamond based microelectrodes |
August 5, 2008 |
| A method and system is disclosed for monitoring one or more characteristics associated with a fluid. An insulating layer comprising non-conducting diamond is positioned within a housing and has a surface exposed directly or indirectly to the fluid. A plurality of microelectrodes made |
| 7407013 |
Expandable well screen with a stable base |
August 5, 2008 |
| An expandable well screen system includes a screen assembly having a base pipe, a strut, and a screen expandable from a retracted position to an expanded position in the wellbore; and an insert guide disposed in the base pipe when the screen is in the expanded position, wherein the base |
| 7407007 |
System and method for isolating flow in a shunt tube |
August 5, 2008 |
| A technique is provided to selectively control flow along shunt tubes, such as those used in gravel pack operations. The technique utilizes a swellable material valve that comprises a swellable material deployed along the shunt tube flow path. When flow through a specific shunt tube |
| 7407005 |
Electrically controlled release device |
August 5, 2008 |
| A cable release apparatus includes a housing and latch mounted at one end of the housing. The latch has a central opening and a plurality of projecting members extending into the housing. A releasable connector is mounted inside the housing. An actuator has one end disposed in the ce |
| 7406883 |
Compact device for measuring the speed and the direction of rotation of an object |
August 5, 2008 |
| The invention concerns a device for measuring the speed and direction of rotation of an object (3) near to which it is placed. It comprises: a magnetic detection device (2) that delivers, in response to a rotation of the object (3) generating a magnetic field variation, signals rep |
| 7406398 |
System and method for determining pump underperformance |
July 29, 2008 |
| A system and method are provided for identifying underperformance in a pumping system used to produce a desired fluid. Various conditions are sensed during operation of the pumping system, and those sensed conditions are used to determine measured parameters that are provided with an |
| 7404446 |
Well tool protection system and method |
July 29, 2008 |
| The system including a well tool having a housing forming a protection fluid chamber in fluid communication with a discharge port, a protection fluid disposed within the protection fluid chamber, and a moveable mechanism in functional connection with the protection fluid chamber in a |
| 7404443 |
Compensation system for a jacking frame |
July 29, 2008 |
| An offshore oil well platform assembly is provided that includes a jacking frame, which supports a coiled tubing injector, which in turn is connected to a wellhead during a coiled tubing operation; and a compensation system. The compensation system includes a force measurement system |
| 7402796 |
Method and apparatus for monitoring deposition of solids in pipelines using a plurality of radia |
July 22, 2008 |
| The invention concerns a method of monitoring flow in a flow pipe. According to the invention, the method comprising the following steps: providing a flow pipeline having a unique photon detector at a first position on the periphery of said pipe, a first photon source at a second pos |
| 7402753 |
Enhanced electrical cables |
July 22, 2008 |
| Electrical cables formed from at least one insulated conductor, a layer of inner armor wires disposed adjacent the insulated conductor, and a layer of shaped strength members disposed adjacent the outer periphery of the first layer of armor wires. A polymeric material is disposed in |
| 7402549 |
Viscoelastic surfactant rheology modification |
July 22, 2008 |
| A method for shortening the shear recovery time of cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a rheology enhancer selected from partially hydrolyzed polyvinyl ester and partially hydrolyzed polyacrylates. The rheology |
| 7402424 |
Spectroscopic pH measurement at high-temperature and/or high-pressure |
July 22, 2008 |
| Methods and apparatuses for high-temperature and high-pressure measurement of pH and/or alkalinity of a fluid is described. |
| 7402204 |
Flexible cementing compositions and methods for high-temperature wells |
July 22, 2008 |
| A well cementing composition comprises an hydraulic cement and flexible, acrylonitrile-butadiene copolymer particulate material. A method of cementing a well comprises mixing the composition with sufficient water, and optionally, other additives to form a pumpable slurry, and pumping |
| 7401665 |
Apparatus and method for drilling a branch borehole from an oil well |
July 22, 2008 |
| A wireline drill train is used to drill an elongated, small diameter, lateral branch borehole from near the base of a main well. The drill train, includes a drill module, a first self-propelled thrust module coupled to the drill module, and a second self-propelled thrust module pivot |
| 7401500 |
Positive displacement pump monitor |
July 22, 2008 |
| A positive displacement pump monitor. The monitor includes a sensor coupled to a housing of a pump for obtaining acoustic data therefrom. A proximity switch may be simultaneously used to keep real time timing information relative to the cycling of the pump. A data processor of the mo |
| 7400977 |
Computing values for surveying a subterranean structure based on measurements according to diffe |
July 15, 2008 |
| To survey a subterranean structure, first measurement data according to a first electromagnetic survey technique and second measurement data according to a second, different electromagnetic survey technique are received. An output value for surveying the subterranean structure is com |
| 7398831 |
Expandable tubing and method |
July 15, 2008 |
| An apparatus suitable for use in a wellbore comprises an expandable bistable device. An exemplary device has a plurality of bistable cells formed into a tubular shape. Each bistable cell comprises at least two elongated members that are connected to each other at their ends. The devi |
| 7398829 |
Methods of limiting leak off and damage in hydraulic fractures |
July 15, 2008 |
| Methods for treating a formation penetrated by a wellbore which improves fluid loss control during treatment. In some aspects, the treatments include preparing an aqueous fluid including one or more water inert polymers and an optional viscosifier, injecting the aqueous fluid into th |
| 7398828 |
Well cementing slurries containing fibers |
July 15, 2008 |
| The problem of fiber or particle settling in well cement slurries is addressed by providing a fluid containing two fiber components of differing properties. Such a well treatment fluid, comprising a base fluid; a first fiber component that it substantially more dense than the base fl |
| 7398826 |
Well treatment with dissolvable polymer |
July 15, 2008 |
| Well treatment is disclosed that includes injecting a well treatment fluid with insoluble polyol polymer such as polyvinyl alcohol (PVOH) dispersed therein, depositing the insoluble polymer in the wellbore or an adjacent formation, and thereafter dissolving the polymer by reducing salini |
| 7398822 |
Downhole connection system |
July 15, 2008 |
| A technique is provided in which a contraction joint is used to facilitate connection of well equipment assemblies at a downhole location. The contraction joint accommodates changes in system length during engagement and use or the well equipment assemblies in a wellbore. Additionally, t |
