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1. 发明授权

US5364110A Downhole tool metal-to-metal seal 失效
标题翻译：井下工具金属对金属密封
公开(公告)号：US5364110A
公开(公告)日：1994-11-15
申请号：US990336
申请日：1992-12-11
申请人： Steven G. Streich , John T. Brandell , David D. Szarka , Bobby L. Sullaway
发明人： Steven G. Streich , John T. Brandell , David D. Szarka , Bobby L. Sullaway
IPC分类号： E21B33/00 , E21B33/04 , E21B33/14 , F16J15/08
CPC分类号： E21B33/14 , E21B33/04 , E21B2033/005
摘要： A metal-to-metal annular seal for use in downhole tools which may include annular elastomeric backup seals. In each embodiment, a sealing member has a pair of annular frusto-conical lips adapted for sealing engagement with a cylindrical sealing surface on a member of a downhole tool. The sealing member may be a separate component or an integral part of another member of the downhole tool. A seal energizing member may be used.
摘要翻译：用于井下工具的金属对金属环形密封件，其可以包括环形弹性支撑密封件。在每个实施例中，密封构件具有适于与井下工具的构件上的圆柱形密封表面密封接合的一对环形截头圆锥形唇缘。密封构件可以是单独的部件或井下工具的另一个构件的一体部分。可以使用密封通电构件。

2. 发明授权

US5762139A Subsurface release cementing plug apparatus and methods 失效
标题翻译：地下释放固井塞装置及方法
公开(公告)号：US5762139A
公开(公告)日：1998-06-09
申请号：US740904
申请日：1996-11-05
申请人： Bobby L. Sullaway , David F. Laurel , George L. Morgan , David D. Szarka
发明人： Bobby L. Sullaway , David F. Laurel , George L. Morgan , David D. Szarka
IPC分类号： E21B33/16 , E21B33/13
CPC分类号： E21B33/16
摘要： The present invention provides an improved subsurface release cementing plug apparatus for use in a string of pipe during the cementing of the pipe in a well bore. The apparatus includes a hollow cementing plug seat member adapted to be connected in the string of pipe near the bottom thereof and a cementing plug assembly releasably connectable to a circulation tool or casing running tool in the top of the string of pipe. The cementing plug assembly includes a top cementing plug having an external annular seating surface formed thereon for sealingly engaging a top internal annular seating surface of the cementing plug seat member, and a bottom cementing plug releasably connected to the top cementing plug having an external annular seating surface formed thereon for engaging a bottom internal annular seating surface of the cementing plug seat member.
摘要翻译：本发明提供一种改进的地下释放固井塞装置，用于在井眼中的管道固井期间用于一排管道。该装置包括适于连接在靠近其底部的管道系列中的中空固井塞座构件和可释放地连接到管柱顶部的循环工具或套管运行工具的固井塞组件。固井塞组件包括顶部固井塞，该顶部固井塞具有形成在其上的外部环形座表面，用于密封地接合固井塞座构件的顶部内部环形就座表面，以及可释放地连接到顶部固井塞的底部固井塞，其具有外部环形座其上形成有用于接合固定塞座构件的底部内部环形座面的表面。

3. 发明授权

US06244342B1 Reverse-cementing method and apparatus 有权
标题翻译：反向固井方法和装置
公开(公告)号：US06244342B1
公开(公告)日：2001-06-12
申请号：US09388018
申请日：1999-09-01
申请人： Bobby L. Sullaway , David D. Szarka
发明人： Bobby L. Sullaway , David D. Szarka
IPC分类号： E21B3400
CPC分类号： E21B21/10 , E21B33/14
摘要： The present invention relates to reverse-cementing apparatus. The reverse-cementing apparatus is a float apparatus connected in a pipe string to be cemented into a wellbore. The float apparatus includes an outer housing connected to the casing string. A check valve for preventing flow from the wellbore into the pipe string is disposed in the housing. The check valve is releasably disposed in the housing so that it can be removed from the housing once the pipe string is in place. A flow path for fluid from the wellbore into the pipe string is therefore provided. Cement displaced into the annulus will cause fluid in the wellbore to enter the pipe string through the housing so that the pipe string can be cemented in place utilizing a reverse-cementing method.
摘要翻译：本发明涉及倒装固定装置。反向固井装置是连接在管柱中的浮子装置，用于粘结到井眼中。浮子装置包括连接到套管柱的外壳。用于防止从井眼流入管柱的止回阀设置在壳体中。止回阀可释放地设置在壳体中，使得一旦管柱就位就可以将其从壳体中移除。因此，提供了从井眼进入管柱的流体流路。移入环形空间的水泥将导致井眼中的流体通过壳体进入管柱，从而可以使用反向固井法将管柱粘结到位。

4. 发明授权

US6095247A Apparatus and method for opening perforations in a well casing 失效
标题翻译：用于在井套管中打开穿孔的装置和方法
公开(公告)号：US6095247A
公开(公告)日：2000-08-01
申请号：US976320
申请日：1997-11-21
申请人： Steven G. Streich , Mike Navarette , Jimmie D. Weaver , Richard L. Giroux , David D. Szarka
发明人： Steven G. Streich , Mike Navarette , Jimmie D. Weaver , Richard L. Giroux , David D. Szarka
IPC分类号： E21B17/00 , E21B29/02 , E21B43/11
CPC分类号： E21B17/00 , E21B29/02 , E21B43/11
摘要： An apparatus for opening perforations in a casing string. The casing string has a special casing section defining a plurality of holes therethrough. Rupturable ceramic discs or inserts are disposed in said holes and retained therein. The ceramic discs or inserts are adapted to withstand the fluid differential pressures normally present in the wellbore but are rupturable in response to impact by a mild explosive charge. The explosive charge is provided by detonating a length of det-cord disposed in the casing string adjacent to the holes in the special casing section. A method of perforating using this apparatus is also disclosed.
摘要翻译：一种用于在套管柱中打开穿孔的装置。套管柱具有限定穿过其中的多个孔的特殊壳体部分。可破坏的陶瓷盘或插入件设置在所述孔中并保持在其中。陶瓷盘或插入件适于承受通常存在于井筒中的流体压差，但是响应于温和的爆炸装料的冲击而可破裂。通过引爆设置在与特殊套管部分中的孔相邻的套管柱中的一定长度的探测器来提供爆炸物。还公开了使用该装置的穿孔方法。

5. 发明授权

US4991654A Casing valve 失效
标题翻译：套管阀
公开(公告)号：US4991654A
公开(公告)日：1991-02-12
申请号：US435114
申请日：1989-11-08
申请人： John T. Brandell , David D. Szarka , Bob L. Sullaway
发明人： John T. Brandell , David D. Szarka , Bob L. Sullaway
IPC分类号： E21B23/00 , E21B33/14 , E21B34/06 , E21B34/14 , E21B37/08 , E21B43/11 , E21B43/114
CPC分类号： E21B23/006 , E21B33/146 , E21B34/063 , E21B34/14 , E21B37/08 , E21B43/11 , E21B43/114
摘要： A casing valve includes an outer housing with a sliding sleeve. First and second seals define a sealed annulus within the housing. A latch is disposed in the sealed annulus for latching the sliding sleeve in its first and second positions. The housing has a plurality of housing ports defined therein, and the sliding sleeve has a plurality of sleeve ports defined therein, all of which are initially blocked by disintegratable plugs. A third seal disposed between the sleeve and housing isolates the housing ports from the sleeve ports when the sleeve is in its first position relative to the housing. When the sleeve is moved to its second position relative to the housing it is aligned so that the sleeve ports are in registry with the housing ports. This alignment is achieved by a lug and groove which are also disposed in the sealed annulus of the casing valve.
摘要翻译：套管阀包括具有滑动套筒的外壳。第一和第二密封件在壳体内限定密封环。闩锁设置在密封环中，用于将滑动套筒锁定在其第一和第二位置。壳体具有限定在其中的多个壳体端口，并且滑动套筒具有限定在其中的多个套筒端口，所有套筒端口最初被可分解的塞子阻塞。设置在套筒和壳体之间的第三密封件当套筒相对于壳体处于其第一位置时将壳体端口与套筒端口隔离。当套筒相对于壳体移动到其第二位置时，其对准，使得套筒端口与壳体端口对准。这种对准是通过一个也设置在套管阀的密封环空中的凸耳和凹槽实现的。

6. 发明授权

US4949788A Well completions using casing valves 失效
标题翻译：使用套管阀完井
公开(公告)号：US4949788A
公开(公告)日：1990-08-21
申请号：US435303
申请日：1989-11-08
申请人： David D. Szarka , Bob L. Sullaway , John T. Brandell , Steven L. Schwegman
发明人： David D. Szarka , Bob L. Sullaway , John T. Brandell , Steven L. Schwegman
IPC分类号： E21B23/00 , E21B33/14 , E21B34/06 , E21B37/08 , E21B41/00 , E21B43/11 , E21B43/114
CPC分类号： E21B23/006 , E21B33/14 , E21B34/063 , E21B37/08 , E21B41/0078 , E21B43/11 , E21B43/114
摘要： A well is completed by cementing a casing string in place in the well. A jetting tool assembly is run into the casing string on a tubing string. The jetting tool assembly engages a sliding sleeve of a casing valve and slides the sliding sleeve to an open position uncovering a plurality of housing ports in the casing valve housing in which the sleeve is received. Then, disintegratable plugs are hydraulically jetted from the housing ports to communicate a subsurface formation adjacent the casing valve with an interior of the casing string. Preferably, prior to opening the sleeve and hydraulically jetting the plugs, residual cement is drilled from the casing string, then further residual cement is hydraulically jetted from the casing valve, and then the casing valve is backwashed by reverse circulation.

7. 发明授权

US07665520B2 Multiple bottom plugs for cementing operations 有权
标题翻译：用于固井作业的多个底部塞子
公开(公告)号：US07665520B2
公开(公告)日：2010-02-23
申请号：US11615180
申请日：2006-12-22
申请人： David D. Szarka , Henry E. Rogers
发明人： David D. Szarka , Henry E. Rogers
IPC分类号： E21B33/16
CPC分类号： E21B33/16 , E21B33/146
摘要： Methods and devices useful in stage cementing operations are provided. One example of an apparatus may comprise a catcher tube assembly and a deformable device. One example of a method is a method of stage cementing a casing string comprising: positioning a catcher tube on top of a float collar; pumping a first fluid through the casing string; placing a first deformable device in the casing string; and pumping a second fluid through the casing string, thereby causing the first deformable device to translate downward in the casing string and into the catcher tube.
摘要翻译：提供了在阶段固井作业中有用的方法和装置。装置的一个示例可以包括捕集器管组件和可变形装置。一种方法的一个实例是一种阶段固井套管的方法，包括：将捕集管放置在浮动轴环的顶部上; 泵送第一流体通过套管柱; 将第一可变形装置放置在套管柱中; 并且泵送第二流体通过套管柱，从而使第一可变形装置在套管柱中向下平移并进入捕集管。

8. 发明授权

US07255162B2 Methods and apparatus for use in subterranean cementing operations 有权
标题翻译：用于地下固井作业的方法和装置
公开(公告)号：US07255162B2
公开(公告)日：2007-08-14
申请号：US10841772
申请日：2004-05-07
申请人： Michael D. Stevens , David D. Szarka , Kevin T. Berscheidt , Henry E. Rogers , Brett A. Fears
发明人： Michael D. Stevens , David D. Szarka , Kevin T. Berscheidt , Henry E. Rogers , Brett A. Fears
IPC分类号： E21B33/13
CPC分类号： E21B33/05 , F16L55/13
摘要： The present invention relates to subterranean cementing operations, and more particularly to an apparatus useful in loading cementing plugs and darts into tubulars, and methods of using such apparatus in subterranean cementing operations. An example of a method of the present invention is a method of placing a compressible object having a cross-section within a tubular, including the steps of: reducing the cross-section of the compressible object; placing the compressible object with the reduced cross-section in a tubular; and releasing the compressible object within the tubular. Another example of a method of the present invention is a method of reducing the radial cross-section of a compressible object. Other examples of apparatus of the present invention include apparatus for placing a compressible object into a tubular.
摘要翻译：本发明涉及地下固井作业，更具体地说涉及一种用于将胶结塞和飞镖装入管中的装置，以及在地下固井操作中使用这种装置的方法。本发明的方法的一个实例是将具有横截面的可压缩物体放置在管状体内的方法，包括以下步骤：减小可压缩物体的横截面; 将具有减小的横截面的可压缩物体放置在管状中; 并释放管状内的可压缩物体。本发明方法的另一个实例是减小可压缩物体的径向横截面的方法。本发明的装置的其它实例包括用于将可压缩物体放置在管状物中的装置。

9. 发明授权

US06973966B2 Compressible darts and methods for using these darts in subterranean wells 有权
公开(公告)号：US06973966B2
公开(公告)日：2005-12-13
申请号：US10714832
申请日：2003-11-14
申请人： David D. Szarka
发明人： David D. Szarka
IPC分类号： E21B33/16 , E21B33/00
CPC分类号： E21B33/16
摘要： The present invention relates generally to subterranean well construction, and more particularly, to improved darts and methods of using these darts in subterranean wells. In one embodiment, the present invention provides a dart for activating a plug located within a subterranean well bore, the dart comprising a mandrel, and a foam body attached to the mandrel. Optionally, an elastic tether can be included, inter alia, to absorb the deformation of the foam body.

10. 发明授权

US5394941A Fracture oriented completion tool system 失效
标题翻译：骨折导向完成工具系统
公开(公告)号：US5394941A
公开(公告)日：1995-03-07
申请号：US80610
申请日：1993-06-21
申请人： James J. Venditto , Lee W. Stepp , David D. Szarka
发明人： James J. Venditto , Lee W. Stepp , David D. Szarka
IPC分类号： E21B34/06 , E21B34/14 , E21B47/09
CPC分类号： E21B34/14 , E21B34/06 , E21B47/09
摘要： A fracture oriented completion tool system for use in a casing string in a wellbore. The completion tool comprises a casing valve having a radioactive source therein, the orientation of which may be determined by use of a detector apparatus, such as a rotational gamma ray detector. The casing valve thus may be aligned with the fracture of a zone of interest in the well. A plurality of casing valves may be used, with at least one having a radioactive source. A swivel connection may be used to interconnect the casing valve so that housing ports therein may be aligned as the casing is run into the wellbore. In one preferred embodiment, the swivel connection is a locking swivel connection. A method of positioning a casing string in the well utilizing the completion tool is also disclosed.
摘要翻译：一种用于井筒中套管柱的破裂定向完井工具系统。完井工具包括其中具有放射源的套管阀，其取向可以通过使用诸如旋转伽马射线检测器的检测器装置来确定。因此，套管阀可以与井中的感兴趣区域的断裂一致。可以使用多个套管阀，其中至少一个具有放射源。可以使用旋转连接件来连接套管阀，使得当壳体进入井眼时，其中的壳体端口可以对齐。在一个优选实施例中，旋转连接是锁定旋转连接。还公开了利用完井工具将套管柱定位在井中的方法。

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