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21. 发明授权

US06588508B2 Method and apparatus to reduce trapped pressure in a downhole tool 失效
公开(公告)号：US06588508B2
公开(公告)日：2003-07-08
申请号：US09920430
申请日：2001-08-01
申请人： Robert A. Parrott , Haoming Li , Anthony P. Vovers , Cynthia L. Hickson , Harry B. Anderson , John M. Corben
发明人： Robert A. Parrott , Haoming Li , Anthony P. Vovers , Cynthia L. Hickson , Harry B. Anderson , John M. Corben
IPC分类号： E21B43116
CPC分类号： E21B43/119
摘要： A tool string for use in a well includes a filter sub (or trapped pressure regulator sub) that is used with other components to reduce trapped pressure. The filter sub filters out debris that may occur from various types of downhole operations, such as perforating operations. By filtering out larger debris, only gases, liquids, and smaller particles are allowed to enter various components of the tool string. Without the presence of larger solid debris inside certain components of the tool string, the likelihood of plugs being formed is reduced so that gases and liquids can more readily pass out of the tool string as the tool string is retrieved to the surface of the well and the well hydrostatic pressure decreases.

22. 发明授权

US5862758A Insert and twist method and apparatus for securing a shaped charge to a loading tube of a perforating gun 失效
公开(公告)号：US5862758A
公开(公告)日：1999-01-26
申请号：US004024
申请日：1993-01-15
申请人： Robert A. Parrott
发明人： Robert A. Parrott
IPC分类号： E21B43/117 , F42B3/00
CPC分类号： E21B43/117
摘要： A loading tube of a perforating gun includes a plurality of mating holes, where each mating hole has a specific and predetermined contour, and a case of a shaped charge, adapted to fit within the mating hole, includes a pair of retaining lugs and a pair of shoulder lugs, which lugs are adapted to uniquely cooperate with the contour of the mating hole of the loading tube for securing the shaped charge to the loading tube. The predetermined contour of each mating hole includes a pair of slots disposed opposite one another in the mating hole, and a pair of grooves disposed opposite one another in the mating hole but offset from the pair of slots. Each pair of grooves includes a large radius groove and a small radius groove. The pair of retaining lugs of the shaped charge case are adapted to be received, respectively, in the pair of slots of the contour of the mating hole; whereas the pair of shoulder lugs are adapted to be initially received in the pair of large radius grooves of the contour of the mating hole. When the shaped charge is twisted clockwise in a circumferential direction, the retaining lugs move out of their respective slots and under a surface of the loading tube; in addition, the shoulder lugs moves out of their respective large radius grooves and into their respective small radius grooves. The shaped charge case is now firmly held within the mating hole of the loading tube. No clips, bending tabs, retaining rings, or charge retention jackets are being used to hold the shaped charge to the loading tube; therefore, when the charges detonate, there will be no debris resultant from the detonation.

23. 发明授权

US5249461A Method for testing perforating and testing an open wellbore 失效
标题翻译：测试穿孔和测试开放式井眼的方法
公开(公告)号：US5249461A
公开(公告)日：1993-10-05
申请号：US824979
申请日：1992-01-24
申请人： Gaylon D. Ponder , Bryan W. McDonald , Robert A. Parrott
发明人： Gaylon D. Ponder , Bryan W. McDonald , Robert A. Parrott
IPC分类号： E21B43/116 , E21B49/00 , E21B49/08 , E21B43/11 , E21B43/12 , E21B47/10
CPC分类号： E21B49/087 , E21B43/116 , E21B49/008
摘要： A new method and apparatus for performing a drill stem test in an open (not cased) borehole are disclosed. When the borehole is initially drilled, the drilling process induces a skin damage near the external surface of the open (not cased) wellbore. It is necessary and desirable to bypass, reduce, or eliminate the skin damage in order to provide a free or natural flow of well fluid from the reservoir in the formation into the wellbore. However, in order to determine the degree of skin damage which exists near the external surface of the wellbore, reservoir parameters such as pressures, temperature and flowrates of the formation fluid flowing from the reservoir into the wellbore is first measured in the presence of the skin damage. The skin damage is then bypassed, removed, eliminated, or reduced by, for example, perforating the external surface of the wellbore. When the wellbore surface has been perforated, the reservoir parameters such as pressures, temperature and flowrates of the formation fluid flowing from the perforated holes into the wellbore are re-measured thereby determining the true formation reservoir parameters such as pressures, temperature and flowrates of the formation well fluid in the reservoir. The reservoir parameters may be re-measured simultaneously with bypassing or reducing the skin damage, or the reservoir parameters may be re-measured only after the skin damage has been bypassed or reduced.
摘要翻译：公开了一种用于在开放（未套管）钻孔中执行钻杆试验的新方法和装置。当钻孔初始钻孔时，钻孔过程在开放（未套管）井筒的外表面附近引起皮肤损伤。绕过，减少或消除皮肤损伤是有必要和期望的，以便提供从地层中的储层到井眼的井流体的自由或自然流动。然而，为了确定在井眼外表面附近存在的皮肤损伤程度，首先在皮肤存在下测量储层参数，例如压力，温度和流体从储层流入井眼的流体损伤。然后通过例如穿透井眼的外表面来绕过，去除，消除或减少皮肤损伤。当井眼表面被穿孔时，重新测量储层参数，例如从穿孔渗透到井眼中的地层流体的压力，温度和流量，从而确定真实地层储层参数，如压力，温度和流量储层中形成井液。可以同时重新测量储层参数，以绕过或减少皮肤损伤，或者只有在皮肤损伤被绕过或减少后才能重新测量储层参数。

24. 发明授权

US08944171B2 Method and apparatus for completing a multi-stage well 有权
标题翻译：完成多级井的方法和装置
公开(公告)号：US08944171B2
公开(公告)日：2015-02-03
申请号：US13197005
申请日：2011-08-03
申请人： Robert A. Parrott , Bruno Lecerf , Sergey Vladimirovich Solovyov , Mikhail Petrovich Gusev , Ilya Anatolievich Pavlov , Jason Baihly , Michael Bertoja
发明人： Robert A. Parrott , Bruno Lecerf , Sergey Vladimirovich Solovyov , Mikhail Petrovich Gusev , Ilya Anatolievich Pavlov , Jason Baihly , Michael Bertoja
IPC分类号： E21B33/12 , E21B43/26 , E21B34/14
CPC分类号： E21B43/26 , E21B34/14
摘要： A technique includes deploying a string that includes a seat assembly in a well; and running a shifting tool in a passageway of the string. The shifting tool shifts the seat assembly to cause the seat assembly to transition between a first state in which the seat assembly forms a seat that is adapted to allow an untethered object communicated in the passageway of the string to pass through the seat assembly to a second state in which the seat assembly is adapted to catch the object to form a fluid barrier in the string. The fluid barrier is used to divert fluid in the tubing string to perform, for example, a stimulation operation.
摘要翻译：一种技术包括在井中部署包括座椅组件的串; 并在弦的通道中运行换档工具。换档工具移动座椅组件以使座椅组件在座椅组件形成座椅的第一状态之间转换，座椅组件形成座椅，该第一状态适于允许在弦的通道中连通的无阻塞物体通过座椅组件到达第二状态状态，其中座椅组件适于捕获物体以在弦中形成流体屏障。流体屏障用于转移油管柱中的流体，以执行例如刺激操作。

25. 发明授权

US06817598B2 Gun brake device 失效
标题翻译：枪制动装置
公开(公告)号：US06817598B2
公开(公告)日：2004-11-16
申请号：US10280744
申请日：2002-10-25
申请人： Robert A. Parrott , Stephen F. Lloyd , Gerhard Schoonderbeek , Atilla Kaplan , Henrik Praesius , Kuo-Chiang Chen
发明人： Robert A. Parrott , Stephen F. Lloyd , Gerhard Schoonderbeek , Atilla Kaplan , Henrik Praesius , Kuo-Chiang Chen
IPC分类号： F16F918
CPC分类号： E21B43/116 , E21B40/00 , E21B43/11 , E21B43/119 , E21B2034/005
摘要： The present invention provides a gun brake system adapted to slow the descent of a tool string in a well. In one embodiment, the brake system comprises a brake installed within the well and having a snug fitting restriction and one or more fluid channels extending along a portion thereof. The brake system further provides means for maintaining the fluid volume substantially constant within the production tubing to which the gun brake is installed.
摘要翻译：本发明提供一种适于减慢井中工具串下降的枪制动系统。在一个实施例中，制动系统包括安装在井内的制动器，并且具有贴合限制和沿其一部分延伸的一个或多个流体通道。制动系统还提供用于在安装枪制动器的生产管道内基本上保持流体体积恒定的装置。

26. 发明授权

US06397947B1 Optimizing charge phasing of a perforating gun 有权
标题翻译：优化射孔枪的电荷定相
公开(公告)号：US06397947B1
公开(公告)日：2002-06-04
申请号：US09564840
申请日：2000-05-04
申请人： Lawrence A. Behrmann , Jorge E. Lopez de Cardenas , Robert A. Parrott
发明人： Lawrence A. Behrmann , Jorge E. Lopez de Cardenas , Robert A. Parrott
IPC分类号： E21B43117
CPC分类号： E21B43/117 , E21B43/119
摘要： A method includes arranging shaped charges in a perforating gun to produce perforation holes in a helical pattern that is defined in part by a phase angle; and choosing four adjacent perforation holes to be created that are adjacent nearest neighbors. The distances are determined between three of the four adjacent perforation holes to be created. A standard deviation is minimized between the three adjacent perforation holes. The phase angle is set based on the minimization.
摘要翻译：一种方法包括在穿孔枪中布置成形的电荷，以产生部分由相位角定义的螺旋形图案的穿孔; 并选择邻近的邻近邻近的四个相邻穿孔。在要创建的四个相邻穿孔中的三个之间确定距离。三个相邻穿孔之间的标准偏差最小化。基于最小化设置相位角。

27. 发明授权

US6021714A Shaped charges having reduced slug creation 失效
标题翻译：形状收费减少了lug lug创造
公开(公告)号：US6021714A
公开(公告)日：2000-02-08
申请号：US17605
申请日：1998-02-02
申请人： Brenden M. Grove , Jack F. Lands, Jr. , Robert A. Parrott
发明人： Brenden M. Grove , Jack F. Lands, Jr. , Robert A. Parrott
IPC分类号： E21B43/117 , F42B1/028 , F42B1/032 , F42B1/036 , F42B1/02
CPC分类号： F42B1/036 , E21B43/117 , F42B1/028 , F42B1/032
摘要： A shaped charge for use in perforating formation adjacent a wellbore includes a liner having a substantially non-conical shape (also referred to as bowl-shaped). The liner has first and second layers, with a first layer contacting the main explosive charge. The second layer (made of such materials as copper, silver, gold, and so forth) contributes primarily to formation of a perforating jet while the first layer contains a material that substantially disintegrates upon detonation such that formation of a slug is reduced or eliminated.
摘要翻译：用于邻近井筒穿孔地层的成形装料包括具有基本上非圆锥形（也称为碗状）的衬垫。衬套具有第一层和第二层，第一层与主要的炸药接触。第二层（由诸如铜，银，金等的材料制成）主要用于形成穿孔射流，而第一层包含在爆炸时基本上分解的材料，从而减少或消除块状物的形成。

28. 发明授权

US4960171A Charge phasing arrangements in a perforating gun 失效
标题翻译：在穿孔枪中进行充电相位安排
公开(公告)号：US4960171A
公开(公告)日：1990-10-02
申请号：US391807
申请日：1989-08-09
申请人： Robert A. Parrott , Gary M. Lendermon
发明人： Robert A. Parrott , Gary M. Lendermon
IPC分类号： E21B43/117 , E21B43/119
CPC分类号： E21B43/117 , E21B43/119
摘要： Various charge phasing arrangements in a perforating gun include those uniquely associated with phasing solely along a 180 degree circumference of the perforating gun, for use in but not limited to deviated boreholes. One phasing arrangement comprises four rows of charges, four corresponding rows of recesses in the perforating gun carrier and four corresponding rows of holes in the loading tube, the recesses, holes and charges being constrained within a 180 degree circumference of the perforating gun. The two outermost rows have more recesses, more holes and more charges than do the two innermost rows, since more well fluid is interposed between the two outermost rows and the casing than is interposed between the two innermost rows and the casing of the borehole. Another phasing arrangement comprises five rows of charges, recesses and holes, in lieu of the four of the former embodiment, constrained within the 180 degree circumference, adjacent rows being disposed more closely together in this embodiment than in the former embodiment. A third phasing arrangement comprises eighteen rows of charges, recesses and holes disposed around the entire 360 degrees of the circumference of the gun and borehole.The recesses, holes and charges in all embodiments are uniformly distributed to prevent splitting of the borehole casing, and the charge density in shots per foot for all embodiments of invention is high enough to ensure that a significant quantity of formation fluid is produced from the surrounding formation.
摘要翻译：射孔枪中的各种电荷相位装置包括仅仅沿着穿孔枪的180度圆周相位定位的那些，用于但不限于偏心的钻孔。一个相位装置包括四排电荷，穿孔枪支架中的四个相应的凹槽列，以及装载管中的四个相应排的孔，凹槽，孔和电荷被限制在穿孔枪的180度圆周内。两个最外面的行具有比两个最内排更多的凹陷，更多的孔和更多的电荷，因为在两个最外面的行和壳体之间插入比插入在两个最内行和井眼的壳体之间更好的流体。另一个相位装置包括五行电荷，凹槽和孔，代替前一实施例中的四个，限制在180度圆周内，在本实施例中相邻的行在前一个实施例中更靠近地设置。第三个定相装置包括十八排电荷，凹槽和孔，围绕枪和钻孔的圆周的整个360度设置。在所有实施例中，凹槽，孔和电荷均匀分布以防止钻孔套管分裂，并且对于本发明的所有实施例，每英尺射流的电荷密度足够高以确保从周围产生大量的地层流体形成。

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