公开(公告)号：US5613557A

公开(公告)日：1997-03-25

申请号：US448108

申请日：1995-05-23

申请人： Curtis G. Blount ,  Robert A. Benham ,  Jerry L. Brock ,  John A. Emerson ,  Keith R. Ferguson ,  Donald F. Scheve ,  Joseph H. Schmidt ,  Karl W. Schuler ,  Philip L. Stanton

发明人： Curtis G. Blount ,  Robert A. Benham ,  Jerry L. Brock ,  John A. Emerson ,  Keith R. Ferguson ,  Donald F. Scheve ,  Joseph H. Schmidt ,  Karl W. Schuler ,  Philip L. Stanton

IPC分类号： E21B23/06 ,  E21B29/10 ,  E21B33/12 ,  E21B33/134

CPC分类号： E21B23/06 ,  E21B29/10 ,  E21B33/12 ,  E21B33/134

摘要： Perforations and other openings in well casings, liners and other conduits may be substantially blocked or sealed to prevent fluid flow between the casing or liner interior and an earth formation by placing a radially expansible sleeve adjacent the perforations or openings and urging the sleeve into forcible engagement with the casing or inner wall using an explosive charge. An apparatus including a radially contracted sleeve formed by a coiled plate member or a tubular member having flutes defined by external and internal folds, may be deployed into a well casing or liner through a production or injection tubing string and on the end of a flexible cable or coilable tubing. An explosive charge disposed on the apparatus and within the sleeve may be detonated to urge the sleeve into forcible engagement with the casing inner wall.

摘要翻译： 井套管，衬管和其它管道中的穿孔和其他开口可以基本上被阻挡或密封，以通过将径向可膨胀的套管放置在穿孔或开口附近并促使套管强制接合以防止流体在套管或内衬内部和地层之间流动 套管或内壁使用炸药。 包括由螺旋板构件形成的径向收缩的套筒或具有由外部和内部折叠限定的槽纹的管状构件的装置可以通过生产或注入管柱并且在柔性电缆的端部部署到井套管或衬套中 或可卷曲管。 布置在设备上和套筒内的爆炸物可以被引爆以促使套管与壳体内壁强制接合。

公开(公告)号：US5456319A

公开(公告)日：1995-10-10

申请号：US282685

申请日：1994-07-29

申请人： Joseph H. Schmidt ,  James C. Abel ,  Curtis G. Blount ,  Keith R. Ferguson ,  Michael J. Bolkovatz

发明人： Joseph H. Schmidt ,  James C. Abel ,  Curtis G. Blount ,  Keith R. Ferguson ,  Michael J. Bolkovatz

IPC分类号： E21B23/06 ,  E21B29/10 ,  E21B33/12 ,  E21B33/134 ,  E21B43/00

CPC分类号： E21B29/10 ,  E21B23/06 ,  E21B33/12 ,  E21B33/134

摘要： Perforations and cracks in wellbore liners or casings may be temporarily or permanently covered by a radially-expansible, coiled sleeve member formed by a sheet of elastically-deflectable material such as stainless steel which is coiled and placed in a cylinder which may be conveyed into a well to a working position for deployment of the sleeve to expand into engagement with the casing wall to block the perforations or cracks. The cylinder includes a sleeve ejecting piston which may be urged to rapidly eject the sleeve from the cylinder by pressure fluid conveyed to the cylinder by coilable tubing or by a gas-generating charge material electrically connected to an E-line which also may be used to deploy the cylinder into its working position in the well.

摘要翻译： 井筒衬套或套管中的穿孔和裂缝可以暂时地或永久地被可膨胀的螺旋套筒构件所覆盖，该套筒构件由诸如不锈钢的可弹性偏转的材料片形成，该不锈钢盘卷并放置在可被输送到 以及用于部署套筒以扩展成与壳体壁接合以阻止穿孔或裂缝的工作位置。 气缸包括套筒弹出活塞，其可以被推动以通过可压缩管道或通过电连接到E线的气体发生充电材料的压力流体从气缸快速地排出套筒，该气体发生充电材料也可以用于 将气瓶部署到油井的工作位置。

公开(公告)号：US5370187A

公开(公告)日：1994-12-06

申请号：US126945

申请日：1993-09-24

申请人： Keith R. Ferguson ,  Joseph H. Schmidt

发明人： Keith R. Ferguson ,  Joseph H. Schmidt

IPC分类号： E21B43/26

CPC分类号： E21B43/26

摘要： Hydraulic fractures are initiated or extended into earth formations from a first well by filling a space within the wellbore and a tubing string extending within the well with a fracturing fluid, placing the first well in fluid flow communication with a tubing string extending within a second well and increasing the pressure of fluid in the respective tubing strings sufficient to initiate or extend the fracture. The second well serves as an accumulator for accumulating a sufficient charge of pressure fluid, such as gas, to drive the fracturing fluid in the first well into the formation to a suitable extent.

摘要翻译： 液压裂缝从第一井开始或延伸到地层中，通过填充井眼内的空间和在井内延伸有压裂流体的管柱，将第一井与在第二井内延伸的油管柱流体流动连通 并且增加相应管柱中的流体的压力足以引发或延伸断裂。 第二井用作累积足够量的压力流体（例如气体）的蓄能器，以将第一井中的压裂流体驱动到地层中达到适当的程度。

公开(公告)号：US5617921A

公开(公告)日：1997-04-08

申请号：US535978

申请日：1995-09-29

申请人： Joseph H. Schmidt ,  Keith R. Ferguson ,  Andrew J. Bond ,  Roger F. Keese

发明人： Joseph H. Schmidt ,  Keith R. Ferguson ,  Andrew J. Bond ,  Roger F. Keese

IPC分类号： E21B43/26 ,  E21B43/267

CPC分类号： E21B43/26

摘要： Fractures are initiated or extended into fluid producing earth formations from a well by providing a reservoir of high pressure gas at the earth's surface together with a flow control valve or a frangible closure, such as a shear disk, interposed in a conduit connecting the reservoir to the well. The well is precharged with high pressure gas at a pressure less than or about the same as the reservoir gas pressure. Fracture initiation and/or extension may be carried out by firing the perforation gun and opening the flow control valve between the reservoir and the wellhead in timed relation or by allowing a pressure drop across a shear disk interposed between the reservoir and the wellhead to effect rupture of the shear disk to release the reservoir charge. In wells where perforations are already formed, a shear disk or other frangible closure in the well tubing may be ruptured to release a precharge of high pressure gas in the tubing string to begin fracture formation or extension followed by flow of high pressure gas discharged from the reservoir to continue the fracture initiation or extension.

摘要翻译： 通过在地球表面提供高压气体储存器以及流量控制阀或易碎封闭件（例如剪切盘）插入在将储存器连接到管道的管道中，从裂缝开始或延伸到产生流体的地层中 那个井 该井用低于或大约等于储层气体压力的压力对高压气体进行预充电。 断裂起始和/或延伸可以通过点火穿孔枪并按照定时关系打开储存器和井口之间的流量控制阀，或者通过允许插入在储层和井口之间的剪切盘上的压降来实现断裂 的剪切盘释放储层的电荷。 在已经形成穿孔的井中，井管中的剪切盘或其他易碎的封闭件可能被破裂，以释放管柱中的高压气体的预充气，以开始断裂形成或延伸，随后从 水库继续断裂开始或延伸。