专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11486228B2 Resettable toe valve 有权
公开(公告)号：US11486228B2
公开(公告)日：2022-11-01
申请号：US16975536
申请日：2019-04-11
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： Alexander Craig Mackay
IPC分类号： E21B34/14 , E21B34/10 , E21B34/06 , E21B34/08
摘要： A toe valve to control the injection of fluid into a toe of an oil or gas well and including: a body with a bore, the body having a port adapted to permit fluid flow between the bore and an outlet on an external surface of the toe valve when the port is open; a closure member adapted to move from an initial closed position in which the port is closed, to an open position in which the port is open; and an actuating mechanism which can be actuated to urge the closure member from the initial closed position toward the open position, and which can be reset when the closure member is moving between the closed and open positions to return the closure member to the initial closed position.

2. 发明授权

US11536095B2 Slimline stop collar with solid cam ring 有权
公开(公告)号：US11536095B2
公开(公告)日：2022-12-27
申请号：US17162381
申请日：2021-01-29
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： Darko Arsoski
IPC分类号： E21B17/16 , E21B17/043
摘要： A stop collar for mounting to a downhole tubular includes: a cylindrical housing having a threaded inner surface and a tapered inner surface; a compressible slip ring having teeth formed in an inner surface thereof and a pair of tapered outer surfaces; a solid cam ring having a tapered inner surface; and a cylindrical bolt having a threaded outer surface. A natural outer diameter of each ring is greater than a minor diameter of the threaded surfaces. Screwing the threaded surfaces of the housing and the bolt is operable to drive the tapered surfaces together, thereby compressing the slip ring such that the teeth engage a periphery of the tubular.

3. 发明授权

US11428073B2 Overpressure toe valve with atmospheric chamber 有权
公开(公告)号：US11428073B2
公开(公告)日：2022-08-30
申请号：US17054987
申请日：2019-06-11
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： Alexander Craig Mackay
IPC分类号： E21B34/10 , E21B33/14 , E21B47/06 , E21B23/04
摘要： A toe valve for use in a wellbore includes: a tubular mandrel having couplings at longitudinal ends thereof for assembly as part of a casing or liner string; a housing extending along a periphery of the mandrel and mounted thereto; a valve piston disposed in an annulus formed between the housing and the mandrel, movable between an open position and a closed position, disposed between a valve port of the housing and a valve port of the mandrel in the closed position; a fastener releasably connecting the valve piston to the housing in the closed position; an atmospheric chamber forming a portion of the annulus adjacent to the valve piston; and a drive piston disposed in the annulus adjacent to a drive port of the mandrel and operable to release the valve piston.

4. 发明授权

US11203902B2 Guide shoe with lockable nose 有权
公开(公告)号：US11203902B2
公开(公告)日：2021-12-21
申请号：US17049246
申请日：2019-05-02
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： Alexander Craig MacKay , Jonathan Peter Buckland
IPC分类号： E21B17/14 , E21B7/20
摘要： A guide shoe (1), adapted for connection to an end of a tubular for deployment in a wellbore of an oil, gas, or water well, includes: a body (10) having an axis (2) and being adapted for connection to the tubular such that torque can be transmitted between the tubular and the body (10); a nose (50) adapted for connection to the body (10); a locking mechanism (30) adapted to shift between an unlocked configuration, in which rotation of the nose (50) around the axis of the body (10) is permitted in first and second directions, and a locked configuration in which rotation of the nose (50) around the axis of the body (10) is restricted in at least one of the first and second directions. The guide shoe includes a resilient biasing device (20) urging the nose (50) into the locked configuration.

5. 发明申请

US20210025245A1 DEPLOYABLE CASING CENTRALISER WITH LATCH FOR BOW SPRINGS 有权
公开(公告)号：US20210025245A1
公开(公告)日：2021-01-28
申请号：US16975459
申请日：2019-04-15
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： Alexander Craig MACKAY
IPC分类号： E21B17/10
摘要： A centraliser for use in a wellbore includes: first and second collars, at least one resilient device extending between the first and second collars, and a locking ring for receiving a tubular in a position radially inside the resilient device and axially between the first and second collars; the resilient device being resiliently biased in a radial direction away from the locking ring; the locking ring having at least one catch device adapted to engage with the at least one resilient device in a radially restricted configuration and the catch device is adapted to resist radial movement of the resilient device away from the locking ring when the catch device is engaged with the resilient device; and at least one fixing between the at least one catch device and the locking ring and made from a sacrificial material adapted to degrade in wellbore conditions.

6. 发明申请

WO2022201028A1 VARIABLE STIFFNESS CENTRALIZER 审中-公开
公开(公告)号：WO2022201028A1
公开(公告)日：2022-09-29
申请号：PCT/IB2022/052612
申请日：2022-03-22
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： ARSOSKI, Darko
IPC分类号： E21B17/10
摘要： A centralizer for use in a wellbore includes a body for disposing around a periphery of a downhole tubular. The body has a plurality of bow springs biased toward an expanded position and a pair of end rings connecting the bow springs. The centralizer further includes an indentation or row of indentation segments formed in a surface of and along each bow spring. The indentations or indentation segments are operable to reduce a stiffness of the centralizer as the bow springs move from the expanded position to a restricted position.

7. 发明申请

WO2019207398A1 RESETTABLE TOE VALVE 审中-公开
公开(公告)号：WO2019207398A1
公开(公告)日：2019-10-31
申请号：PCT/IB2019/053005
申请日：2019-04-11
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： MACKAY, Alexander Craig
IPC分类号： E21B23/08 , E21B34/08 , E21B34/14
摘要： A toe valve to control the injection of fluid into a toe of an oil or gas well and including: a body with a bore, the body having a port adapted to permit fluid flow between the bore and an outlet on an external surface of the toe valve when the port is open; a closure member adapted to move from an initial closed position in which the port is closed, to an open position in which the port is open; and an actuating mechanism which can be actuated to urge the closure member from the initial closed position toward the open position, and which can be reset when the closure member is moving between the closed and open positions to return the closure member to the initial closed position.

8. 发明申请

WO2010082051A2 TUBING SHOE 审中-公开
标题翻译：管子鞋
公开(公告)号：WO2010082051A2
公开(公告)日：2010-07-22
申请号：PCT/GB2010/050046
申请日：2010-01-14
申请人： DOWNHOLE PRODUCTS LIMITED , BARRON, William , KIRK, Ian
发明人： BARRON, William , KIRK, Ian
IPC分类号： E21B17/14
CPC分类号： E21B17/14
摘要： A tubing shoe is disclosed with a body adapted to be connected to a section of tubing to be emplaced in a wellbore and a nose provided on the body, wherein the nose includes a failure guide structure for controlling break-up of the nose upon being drilled out from inside the nose. The failure guide structure typically controls break up by limiting the maximum size of pieces of the nose broken off upon drill out, for example, by defining weakened areas of the nose which are prone to failure upon drilling. The failure guide structure can include discontinuities such as slots or bores formed or drilled into the outer surface of the nose. The failure guide structure controls the break up of the nose in a consistent and predictable manner, and typically at a predictable stage during the drill-out process.
摘要翻译：公开了一种油管靴，其具有适于连接到将被安放在井筒中的一段管道和设置在本体上的鼻部的主体，其中鼻部包括用于控制中断的故障引导结构从鼻子里面钻出来的鼻子。故障引导结构通常通过限制钻出时断开的鼻部件的最大尺寸来控制分解，例如通过限定在钻孔时易于失效的鼻部的弱化区域。故障引导结构可以包括不连续性，例如形成或钻入鼻子外表面的槽或孔。失效指导结构以一致且可预测的方式控制鼻子的分解，并且通常在钻出过程期间的可预测阶段。

9. 发明申请

WO2021144632A1 TOE VALVE WITH VENTED ATMOSPHERIC CHAMBER 审中-公开
公开(公告)号：WO2021144632A1
公开(公告)日：2021-07-22
申请号：PCT/IB2020/060541
申请日：2020-11-09
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： MACKAY, Alexander
IPC分类号： E21B34/10 , E21B34/14 , E21B2200/06
摘要： A toe valve for use in a wellbore includes: a tubular mandrel; a housing extending along a periphery of the mandrel; couplings at longitudinal ends of the toe valve for assembly as part of a casing or liner string; a valve piston disposed in an annulus formed between the housing and the mandrel, movable between an open position and a closed position, and disposed between a valve port of the housing and a valve port of the mandrel in the closed position; an atmospheric chamber for facilitating movement of the valve piston to the open position; a vent port formed through the housing and in fluid communication with the atmospheric chamber; and a flow control device disposed in the vent port and operable to prevent fluid flow from the wellbore into the atmospheric chamber and allow fluid flow from the atmospheric chamber into the wellbore.

10. 发明申请

WO2020031010A1 CENTRALIZER HAVING ATMOSPHERIC CHAMBER FOR EXPANSION IN RESPONSE TO HYDROSTATIC PRESSURE 审中-公开
公开(公告)号：WO2020031010A1
公开(公告)日：2020-02-13
申请号：PCT/IB2019/056329
申请日：2019-07-24
申请人： DOWNHOLE PRODUCTS LIMITED
发明人： BUCKLAND, Jonathan
IPC分类号： E21B17/10
摘要： A centralizer for use in a wellbore includes: a body for disposing around a periphery of a casing or liner string, the body having a plurality of bow springs biased toward an expanded position; a mandrel for disposing around the periphery of the casing or liner string; a piston disposed around the mandrel and movable between a locked position and a release position; a plurality of dogs, each dog mounted to or formed integrally with the respective bow spring and captured by the piston in the locked position, thereby keeping the bow springs in a retracted position; an atmospheric chamber formed between the piston and the mandrel; and a fastener for releasably connecting the piston to the mandrel in the locked position.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式