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1. 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。

2. 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。

3. 发明授权

US5137087A Casing cementer with torque-limiting rotating positioning tool 失效
标题翻译：采用转矩限制旋转定位工具的套管胶泥
公开(公告)号：US5137087A
公开(公告)日：1992-08-11
申请号：US741859
申请日：1991-08-07
申请人： David D. Szarka , Richard L. Giroux , Joseph B. Crump
发明人： David D. Szarka , Richard L. Giroux , Joseph B. Crump
IPC分类号： E21B17/06 , E21B33/14 , E21B34/12 , E21B34/14
CPC分类号： E21B17/04 , E21B17/06 , E21B33/146 , E21B34/12 , E21B34/14
摘要： A casing cementer with torque-limiting rotating positioning tool. The casing cementer comprises a housing with a rotating valve sleeve therein. A positioning tool is used to rotated the valve sleeve between open and closed positions thereof. No reciprication of the positioning tool is required. The valve sleeve has a sealing ring molded thereto for sealing between the housing and the valve sleeve. The valve sleeve preferably has an inside diameter at least as large as an inside diameter of the casing. A stop is provided to limit movement of the valve sleeve when it reaches either the open or closed position. A clutch in the positioning tool provides for torque-limitation and a ratcheting indication to the operator at the surface when the valve sleeve has been opened or closed.
摘要翻译：具有扭矩限制旋转定位工具的套管胶结剂。套管胶结剂包括其中具有旋转阀套筒的壳体。使用定位工具将阀套在其打开和关闭位置之间旋转。不需要定位工具的加工。阀套具有模制在其上的密封环，用于在壳体和阀套之间进行密封。阀套优选地具有至少与壳体的内径一样大的内径。提供止动件以限制阀套到达打开或关闭位置时的移动。当阀套已经打开或关闭时，定位工具中的离合器提供扭矩限制和操作者在表面的棘轮指示。

4. 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。

5. 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。

6. 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.

7. 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。

8. 发明授权

US4979561A Positioning tool 失效
标题翻译：定位工具
公开(公告)号：US4979561A
公开(公告)日：1990-12-25
申请号：US435302
申请日：1989-11-08
申请人： David D. Szarka
发明人： David D. Szarka
IPC分类号： E21B23/00
CPC分类号： E21B23/006
摘要： A positioning tool apparatus for positioning a sliding member of a well tool includes a drag assembly having a longitudinal passageway defined therethrough. An inner mandrel is disposed through the longitudinal passageway of the drag assembly and is longitudinally movable relative to the drag assembly. An operating assembly is provided for selectively operably engaging the sliding member of the well tool in response to longitudinally reciprocating motion of the inner mandrel relative to the drag assembly.

9. 发明授权

US4669538A Double-grip thermal expansion screen hanger and running tool 失效
标题翻译：双夹式热膨胀屏幕挂钩和运行工具
公开(公告)号：US4669538A
公开(公告)日：1987-06-02
申请号：US820273
申请日：1986-01-16
申请人： David D. Szarka
发明人： David D. Szarka
IPC分类号： E21B23/06 , E21B33/1295 , E21B36/00 , E21B43/10 , E21B33/128 , E21B33/129
CPC分类号： E21B33/1295 , E21B23/06 , E21B36/00 , E21B43/10
摘要： A double-grip screen hanger apparatus providing compensation for thermal expansion as a result of heat, such as is present in steam flood or steam injection wells. The screen hanger includes an inner mandrel adapted for attachment to a liner screen. A packer portion is disposed around the inner mandrel, and opposed upper and lower slip assemblies are positioned above and below the packer portion, respectively. The slip assemblies and packer portion are shearably attached to the inner mandrel. Setting of the slips and packer is accomplished by a hydraulic actuator and a running tool attached to the tool string. Downward force applied on the mandrel shears the shearing attachments, thus setting the slips and the packer portion. After setting, the slips locate the packer, and the mandrel is relatively free to longitudinally move within the packer and slips due to thermal expansion. The shearing attachment of the lower slip assembly is stronger than the other shearing attachments, and thus is not sheared during the setting operation. Sufficient thermal expansion of the inner mandrel will result in shearing this shearing attachment. The running tool is releasably attached to the screen hanger, and may be detached therefrom by right-hand rotation.
摘要翻译：一种双把手屏蔽衣架装置，用于补偿热量的热膨胀，例如存在于蒸汽疏水或蒸汽注入井中。屏幕悬挂器包括适于附接到衬板的内心轴。封隔器部分设置在内心轴周围，并且相对的上滑动组件和下滑动组件分别位于封隔器部分的上方和下方。滑动组件和封隔器部分可剪切地附接到内心轴。滑动和封隔器的设置由液压致动器和连接到工具串的运行工具完成。施加在心轴上的向下的力剪切剪切附件，从而设置滑块和封隔器部分。安装后，滑块定位封隔器，并且心轴相对自由地在封隔器内纵向移动并由于热膨胀而滑动。下滑动组件的剪切附件比其他剪切附件更强，因此在设定操作期间不剪切。内心轴的足够的热膨胀将导致剪切该剪切附件。运行工具可释放地附接到屏幕悬挂器，并且可以通过右旋转而从其拆卸。

10. 发明授权

US4421165A Multiple stage cementer and casing inflation packer 失效
标题翻译：多级水泥浆和套管膨胀封隔器
公开(公告)号：US4421165A
公开(公告)日：1983-12-20
申请号：US169095
申请日：1980-07-15
申请人： David D. Szarka
发明人： David D. Szarka
IPC分类号： E21B33/127 , E21B33/14 , E21B33/16 , E21B34/14
CPC分类号： E21B34/063 , E21B33/127 , E21B33/146 , E21B33/16 , E21B34/14
摘要： A combination multiple stage cementing tool and casing inflation packer includes an inflatable packer having a packer mandrel and an inflatable packing element disposed about the mandrel. A cementing tool includes a cylindrical outer casing, a cementing port disposed through a side wall of the casing, and a sliding sleeve valve assembly for opening and closing the cementing port. The cylindrical outer casing of the cementing tool is permanently attached to the packer mandrel and has a maximum outer diameter at least as great as a maximum outer diameter of the inflatable packing element when the inflatable packing element is in an uninflated position.
摘要翻译：组合多级固井工具和套管膨胀封隔器包括具有封隔器心轴和围绕心轴设置的可膨胀衬垫元件的可充气封隔器。固井工具包括圆柱形外壳，通过壳体的侧壁设置的固井口和用于打开和关闭固井口的滑动套筒阀组件。固定工具的圆柱形外壳永久地连接到封隔器心轴上，并且当可充气填料元件处于未膨胀位置时，其最大外径至少与充气填料元件的最大外径一样大。

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