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1. 再颁专利

USRE32343E Well safety valve 失效
标题翻译：井安全阀
公开(公告)号：USRE32343E
公开(公告)日：1987-02-03
申请号：US713914
申请日：1985-03-20
申请人： Michael B. Vinzant , Steven C. Speegle , Michael W. Meaders , Robert L. Hilts
发明人： Michael B. Vinzant , Steven C. Speegle , Michael W. Meaders , Robert L. Hilts
IPC分类号： E21B34/00 , E21B34/10 , E21B43/12
CPC分类号： E21B43/121 , E21B34/105 , E21B2034/002 , Y10T137/87161
摘要： A retrievable well safety valve in a cased well system including a tubing string, a dual packer downhole around the tubing sealing with the casing and submersible pump in the tubing string below the packer.The safety valve controls flow of pumped fluids through the tubing to surface and directs gas flow into the casing annulus above the packer. When the safety valve is landed in cooperating tubing nipples above the packer, separated central annular flow passages are formed for pumped fluids and gas respectively.A ball valve in the central flow passage controls pumped fluid flow therethrough and an annular valve coupled to the ball valve controls gas flow from below the packer through the annular flow passage around and by the ball valve.When the ball valve is in the down and open position, the valve ball member engages a lower seat, which maintains the central and annular flow passages separate and prevents comingling flow of fluids and gas.The coupled valves are held open by pressured fluid from surface and are closed automatically on loss of pressure in their control fluid circuits.When the valves close, a circuit of flow passages for recirculating pumped fluids and gas are opened below the ball valve and the pump may continue operation without overload.

2. 发明授权

US4461353A Well safety valve 失效
标题翻译：井安全阀
公开(公告)号：US4461353A
公开(公告)日：1984-07-24
申请号：US401005
申请日：1982-07-22
申请人： Michael B. Vinzant , Steven C. Speegle , Michael W. Meaders , Robert L. Hilts
发明人： Michael B. Vinzant , Steven C. Speegle , Michael W. Meaders , Robert L. Hilts
IPC分类号： E21B34/00 , E21B34/10 , E21B43/12
CPC分类号： E21B34/105 , E21B43/121 , E21B2034/002 , Y10T137/87161
摘要： A retrievable well safety valve in a cased well system including a tubing string, a dual packer downhole around the tubing sealing with the casing and submersible pump in the tubing string below the packer.The safety valve controls flow of pumped fluids through the tubing to surface and directs gas flow into the casing annulus above the packer. When the safety valve is landed in cooperating tubing nipples above the packer, separated central annular flow passages are formed for pumped fluids and gas respectively.A ball valve in the central flow passage controls pumped fluid flow therethrough and an annular valve coupled to the ball valve controls gas flow from below the packer through the annular flow passage around and by the ball valve.When the ball valve is in the down and open position, the valve ball member engages a lower seat, which maintains the central and annular flow passages separate and prevents comingling flow of fluids and gas.The coupled valves are held open by pressured fluid from surface and are closed automatically on loss of pressure in their control fluid circuits.When the valves close, a circuit of flow passages for recirculating pumped fluids and gas are opened below the ball valve and the pump may continue operation without overload.
摘要翻译：一种套管井系统中的可回收井安全阀，包括油管柱，围绕油管的双封隔器井下，以及封隔器下方的油管柱中的潜油泵。安全阀控制泵送流体通过管道到达表面的流动，并将气流引导到封隔器上方的壳体环空中。当安全阀降落在封隔器上方的配套管接头上时，分别形成了用于泵送的流体和气体的分离的中心环形流动通道。中央流动通道中的球阀控制泵送的流体流过其中，并且连接到球阀的环形阀控制气体从封隔器下方通过围绕球阀的环形流动通道。当球阀处于向下和打开位置时，阀球构件接合下座，其将中心和环形流动通道分开并防止流体和气体的流出。联动阀门由压力流体从表面保持打开，并在其控制流体回路中的压力损失时自动关闭。当阀关闭时，用于循环泵送流体和气体的流动通道的回路在球阀下方打开，并且泵可以继续运行而不会过载。

3. 发明授权

US5022427A Annular safety system for gas lift production 失效
标题翻译：瓦斯提升生产环境安全系统
公开(公告)号：US5022427A
公开(公告)日：1991-06-11
申请号：US487398
申请日：1990-03-02
申请人： Ronald K. Churchman , Michael W. Meaders , Nam Van Le
发明人： Ronald K. Churchman , Michael W. Meaders , Nam Van Le
IPC分类号： E21B43/12 , F04F1/20
CPC分类号： F04F1/20 , E21B43/123 , Y10T137/2934 , Y10T137/86984
摘要： A lift gas safety valve has a compound valve closure assembly which will close automatically upon loss of hydraulic control pressure, and which can be reopened and maintained in the open position by the application of hydraulic control pressure at a relatively low pressure level. A primary valve closure member is slideably mounted onto a valve stem for movement to a seated position on the valve body in which a lift gas flow passage is closed, to an unseated position in which the lift gas flow passage is opened. A bypass flow passage is formed between the stem and the primary valve closure member for establishing fluid flow communication between the lift gas flow passage and the outlet port when the primary valve closure member is in its seated position. The auxiliary valve closure member is mounted onto the valve stem for movement from a seated position on the primary valve closure member to an unseated position for selectively closing and opening the bypass flow passage. According to this arrangement, when the auxiliary valve closure member is moved to its open position, the pressure differential across the safety valve is equalized, thereby permitting the main valve closure member to be unseated by the application of hydraulic control fluid at a relatively low pressure level.
摘要翻译：升降气体安全阀具有复合阀闭合组件，其在液压控制压力损失时将自动关闭，并且可以通过在相对低的压力水平下施加液压控制压力来重新打开并保持在打开位置。主阀关闭构件可滑动地安装在阀杆上，用于移动到提升气体流动通道关闭的阀体上的就座位置到提升气体流动通道打开的非旋转位置。在主阀和主阀关闭构件之间形成旁通流动通道，用于在主阀闭合构件处于其就座位置时在提升气体流动通道和出口之间建立流体流动连通。辅助阀关闭构件安装在阀杆上，用于从主阀关闭构件上的就座位置移动到用于选择性地关闭和打开旁路流动通道的非旋转位置。根据该结构，当辅助阀关闭构件移动到其打开位置时，跨过安全阀的压差相等，从而允许主阀关闭构件通过在相对低的压力下施加液压控制流体而脱离水平。

4. 发明授权

US5249630A Perforating type lockout tool 失效
标题翻译：穿孔式锁定工具
公开(公告)号：US5249630A
公开(公告)日：1993-10-05
申请号：US823283
申请日：1992-01-21
申请人： Michael W. Meaders , Rennie L. Dickson
发明人： Michael W. Meaders , Rennie L. Dickson
IPC分类号： E21B29/08 , E21B34/00 , E21B34/10 , E21B34/06
CPC分类号： E21B29/08 , E21B34/106 , E21B2034/005
摘要： A tubing retrievable safety valve, lockout tool and method of use are disclosed that are adapted to lock the valve open permanently and provide access to control line pressure by perforating the piston in the valve. The lockout tool comprises a track mandrel having a ramp slidably disposed beneath a punch that is adapted to penetrate the piston wall of the valve at a point adjacent to the control fluid annulus, thereby creating a protrusion adapted to lock the valve open and establishing fluid communication between the control fluid annulus and the valve bore.
摘要翻译：公开了一种管道可回收的安全阀，锁定工具和使用方法，其适于将阀永久地打开并通过对阀中的活塞进行穿孔来提供对控制管线压力的接近。锁定工具包括轨道心轴，其具有可滑动地设置在冲头下方的斜面，其适于在与控制流体环空相邻的点处穿透阀的活塞壁，由此产生适于将阀锁定打开并建立流体连通在控制流体环与阀孔之间。

5. 发明授权

US5125457A Resilient seal for curved flapper valve 失效
标题翻译：弯曲挡板弹性密封
公开(公告)号：US5125457A
公开(公告)日：1992-06-30
申请号：US714160
申请日：1991-06-11
申请人： Michael W. Meaders
发明人： Michael W. Meaders
IPC分类号： E21B34/00 , E21B34/10
CPC分类号： E21B34/105 , E21B2034/005 , Y10T137/7868 , Y10T137/7898
摘要： A subsurface safety valve has a resilient valve seat and an upwardly closing flapper plate whose sealing surfaces each have a match spherical radius of curvature. The sealing surface of the valve seat is a concave spherical segment of elastomer material and the sealing surface of the flapper plate is a convex spherical segment. The matching spherical surfaces are lapped together to provide a metal-to-metal seal along the interface between the nested convex and concave sealing surfaces. This permits angular displacement of the flapper plate relative to the valve seat without interrupting positive sealing engagement. The concave spherical seating surface of the resilient valve seat will tolerate a limited amount of misalignment of the flapper plate which may be caused by operation in low differential pressure, sandy well conditions.
摘要翻译：地下安全阀具有弹性阀座和向上封闭的挡板，其密封表面各自具有匹配的球形曲率半径。阀座的密封面是弹性体材料的凹球形部分，挡板的密封面是凸形的球形部分。匹配的球形表面被堆叠在一起以沿着嵌套的凸形和凹形密封表面之间的界面提供金属对金属密封。这允许挡板相对于阀座的角位移而不会中断正的密封接合。弹性阀座的凹形球形座面将容许挡板的有限量的不对准，这可能是由于低压差，沙井条件下的操作引起的。

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