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| Number | Title | Issue Date |
| 7392850 | Side entry apparatus and method An apparatus for lowering wireline into a well. The apparatus comprises a sleeve having a first and second end, wherein the first end contains a first plurality of wedges and the second end contains a second plurality of wedges. The apparatus further includes an upp... | 07/01/2008 |
| 7377316 | Side entry apparatus and method An apparatus for lowering wireline into a well. The apparatus comprises a sleeve having a first and second end, wherein the first end contains a first plurality of wedges and the second end contains a second plurality of wedges. The apparatus further includes an upp... | 05/27/2008 |
| 7360602 | Barrier orifice valve for gas lift Gas lift valve designs and gas lift systems are described that feature a positive closure mechanism that is highly resistant to significant wear or damage that would result in fluid leakage. A pivotable flapper member is incorporated into a gas lift valve and used a... | 04/22/2008 |
| 7350577 | Method and apparatus for injecting steam into a geological formation The present invention generally provides a method and apparatus for injecting a compressible fluid at a controlled flow rate into a geological formation at multiple zones of interest. In one aspect, the invention provides a tubing string with a pocket and a nozzle a... | 04/01/2008 |
| 7316276 | Side entry apparatus and method An apparatus and method for transferring torque on a rig. The apparatus comprises a central body having a central passage, and a first plurality of splines formed within the central passage and a second plurality of splines formed on a bottom sub, and wherein the fi... | 01/08/2008 |
| 7281589 | Ball dropping tool method and apparatus One embodiment includes a method and apparatus for an improved ball dropper. In one embodiment the method and apparatus can be used to drop various objects into the well bore from the rig. In one embodiment, when the well is pressurized the tool can be loaded with o... | 10/16/2007 |
| 7270182 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 09/18/2007 |
| 7264060 | Side entry sub hydraulic wireline cutter and method A side entry sub for use with a drill string, where the side entry sub receives a wireline within its inner diameter. The present invention includes a device capable of severing the wireline proximate to the side entry sub. The present invention can further include ... | 09/04/2007 |
| 7261155 | Cable side-entry sub with grease injection flow tubes An integrated side-entry sub with grease injection flow tubes is adapted for making up in a drill string and includes a port to receive a cable, such as a wire line. A first pedestal, mounted within a cutout of the side entry sub, provides entry for the cable into t... | 08/28/2007 |
| 7213657 | Apparatus and methods for installing instrumentation line in a wellbore A coupler and a method for installing an instrumentation line, such as fiber optic cable, into a wellbore. The coupler places upper and lower instrumentation lines in communication with one another downhole to form a single line. The coupler comprises a landing tool... | 05/08/2007 |
| 7131497 | Articulated drillstring entry apparatus and method Apparatuses and methods to allow tools disposed upon a conduit to enter the bore of a drillstring is presented. The apparatuses and methods include the use of one or more articulated knuckle joints at ends of an entry sub. The articulated knuckle joints are capable ... | 11/07/2006 |
| 7100699 | High tensile loading top entry sub and method This invention relates to an elongated wireline entry device (10) which allows a wireline tool or coiled tubing with a tool attached to be inserted in a well bore without disconnection form the drill string appended thereto without introducing bending moments... | 09/05/2006 |
| 7096946 | Rotating blast liner An improved blast liner assembly for use in gravel packing or fracturing operations wherein solid materials, in slurry form, are flowed out of the flowbore of a working tool and into the annulus of a wellbore. The blast liner is a cylindrical member that provides a ... | 08/29/2006 |
| 6923274 | Retrievable pre-milled window with deflector An apparatus for drilling one or more holes at an angle to a wellbore. The apparatus includes a tubular housing defining one or more openings. Each opening is configured to provide an exit through which a drilling assembly drills to form a hole at an angle to the we... | 08/02/2005 |
| 6845817 | Kick over tool for side pocket mandrel An apparatus for use in manipulating an eccentrically located well bore device. One embodiment of the apparatus comprises: a main body attachable to a conveyance member; an arm hinged to the main body; a lock assembly for selectively retaining the arm in a locked po... | 01/25/2005 |
| 6810955 | Gas lift mandrel A side-pocket gas lift mandrel having tapered end caps threaded onto the ends of the mandrel with metal-to-metal sealing threads. The thickness of each made up thread set is the same as the thickness of the small end of each end cap, resulting in a mandrel having th... | 11/02/2004 |
| 6755247 | Fluid property sensors and associated methods of calibrating sensors in a subterranean well Fluid property sensors and associated methods of calibrating sensors in a well provide enhanced well monitoring and control. In one described embodiment, an external venturi flowmeter is utilized to determine a flow rate of fluid from a zone into a tubing string, in... | 06/29/2004 |
| 6732805 | Sleeve liner for wireline entry sub assembly and method of use A side entry tool having a lower end portion for receiving a saver sub thereon. There is further provided a sleeve portion positioned in the lower end of the side entry tool having an outside diameter smaller than the inside diameter of the tool body; the sleeve wou... | 05/11/2004 |
| 6644403 | Method and device for the measuring physical parameters in a production shaft of a deposit of underground fluid storage reservoir An operating well of a fluid storage reserve, includes an outer wall delimiting, with a central operating tubing of the well, an annular space in which is placed a protective sheath of an electrical link cable between a surface installation and elements a... | 11/11/2003 |
| 6634427 | Drill string section with internal passage Drill string sections are provided comprising internal passages that may be used to facilitate the electrical or hydraulic connection of multiple devices, such as sensors, arranged at spaced apart positions along the length of the drill sections. Methods ... | 10/21/2003 |
| 6568478 | Method and device to stabilize the production of oil wells The present invention relates to a method and a device to stabilize the production of oil wells. The device is used in a tubing of an oil well and it is intended to overcome the harmful effects provoked by the unstable flow of multiphase flows which are p... | 05/27/2003 |
| 6543541 | Access control between a main bore and a lateral bore in a production system A method for controlling entry from a main bore of a casing into a lateral bore of a producing well which incorporates (i) means for surface-actuated flow control in the lateral bore (ii) a flow control means located in the casing adjacent to the lateral ... | 04/08/2003 |
| 6457530 | Wellhead production pumping tree A monolithic pumping tree combining a bottom connection, production blow-out preventer section, flow tee section and top connection is cast so as to provide an access port extending downwardly through the side wall of the tree from its outer surface, to c... | 10/01/2002 |
| 6422312 | Multizone production monitoring system In a multiple well completion, spaced apart production packers isolate independent production zones from one another. In each isolated production zone, a side pocket mandrel with a full opening bore has lengthwise extending side by side elongated pockets ... | 07/23/2002 |
| 6419021 | Deviated borehole drilling assembly An assembly for formation and completion of deviated wellbores is disclosed which includes a toolguide and a casing section which can be used together or separately. The toolguide includes a lower orienting section and a whipstock having a sloping face, c... | 07/16/2002 |
| 6343651 | Apparatus and method for controlling fluid flow with sand control An apparatus for use in a wellbore having a tubing includes a flow control assembly having at least one orifice and a bore capable of communicating with a bore of the tubing. The flow control assembly includes at least one valve adapted to control fluid f... | 02/05/2002 |
| 6338385 | Retrievable downhole adjustable choke A downhole adjustable choke includes a choke body which is adapted to be lowered into a borehole. The choke body has a bore and an orifice connected to the bore. A sleeve is disposed inside the bore of the choke body. The sleeve has an orifice which is al... | 01/15/2002 |
| 6279659 | Assembly and method for providing a means of support and positioning for drilling multi-lateral wells and for reentry therein through a premilled window An assembly for drilling at least one lateral well from a well bore having a longitudinally premilled window formed therein and having a first orientation key-way member formed in the premilled window and in communication with the premilled window and loc... | 08/28/2001 |
| 6269879 | Sleeve liner for wireline entry sub assembly A side entry tool having a lower end portion for receiving a saver sub thereon. There is further provided a sleeve portion positioned in the lower end of the side entry tool having an outside diameter smaller than the inside diameter of the tool body; the... | 08/07/2001 |
| 6227302 | Apparatus and method for controlling fluid flow in a wellbore An apparatus and method for controlling the fluid flow in a wellbore provides a side pocket mandrel having a main bore, an offset bore, and a radial passageway providing communication therebetween. Inlet orifices through the outer wall of the mandrel prov... | 05/08/2001 |
| 6202764 | Straight line, pump through entry sub Entry sub for small conduit operations within the bore of a drill string. The entry sub comprises a central body having upper and lower collars, adapted for in-line attachment to a drill string. Each of the collars has a bore therethrough. The upper and l... | 03/20/2001 |
| 6186239 | Casing annulus remediation system A casing annulus remediation system for lowering a flexible hose into an annulus between strings of casing in a petroleum well by pressurizing the hose so that the hose is rigid and may be forced down the annulus. It is necessary to insert the hose throug... | 02/13/2001 |
| 6102123 | One trip milling system The milling and whipstock assembly includes a whipstock having a ramp portion for directing the milling assembly to cut a secondary borehole in an existing cased borehole. The milling assembly includes a shaft having rigid and flexible portions and an und... | 08/15/2000 |
| 6095248 | Method and apparatus for remote control of a tubing exit sleeve A remote-controlled tubing sleeve window for access to a lateral wellbore of a multilateral well. The tubing sleeve window has a tubular body portion that defines a side port that is sufficiently-sized to allow a well tool to pass. A sleeve is received in... | 08/01/2000 |
| 5803191 | Well entry tool A well entry tool includes an upper tubular member (10) and a lower tubular member (14) connected together by an intermediate assembly. The upper and lower tubular members (10, 14) are provided with outer end portions (12, 16) for connection of the tool i... | 09/08/1998 |
| 5642781 | Multi-passage sand control screen An apparatus for controlling sand production within a wellbore completed to a subterranean reservoir is disclosed. The apparatus will include a base supporting member that has a series of perforations included thereon. A jacket member is disposed about th... | 07/01/1997 |
| 5435387 | Built-in grout line for a well casing A combination well casing and grout line for grouting the area of a hole dug for a well between the well casing and the sides of the hole. A number of well casing sections connect end-to-end. Each well casing section is provided with at least one grout li... | 07/25/1995 |
| 5080168 | Device for locking a cable passing across the wall of a tube such as a side-entry sub A locking device allows a cable to be immobilized in translation in relation to a side wall entry sub inserted in a string of tubular elements taken down into a well bore as long as the tractive forces that can be applied to the cable remain limited. The ... | 01/14/1992 |
| 4913227 | Equipment for a drill pipe string including a side entry sub, a safety member for anchoring a cable on a support, and a method of using the equipment Equipment is provided for drill pipe strings including a side entry sub, allowing a cable to be passed therethrough using if required a safety member for anchorage on a support. Said sub includes more particularly means for sealing about the cable and sai... | 04/03/1990 |
| 4681162 | Borehole drill pipe continuous side entry or exit apparatus and method A side entry sub for use in a drill pipe string which permits continuous injection and/or removal of a wireline equipped with analitical instruments within the hollow of the pipe without interrupting the connection or resulting communication between the w... | 07/21/1987 |
