公开(公告)号：US20120186801A1

公开(公告)日：2012-07-26

申请号：US13438663

申请日：2012-04-03

申请人： Andrew Kutac

发明人： Andrew Kutac

IPC分类号： E21B33/13

CPC分类号： E21B33/1216 ,  E21B33/1208

摘要： A swellable downhole packer (10) is provided for positioning downhole in a well to seal with the interior surface of a borehole or the interior surface of a downhole tubular. The packer includes a swellable elastomeric sleeve-shaped body (14) positioned over a mandrel (12) for swelling, and a rigid end ring (16,18). An elastomeric anti-extrusion member (20) is spaced axially between the sleeve-shaped body and the rigid end ring, and has a radial thickness adjacent the end ring greater than the radial thickness adjacent the sleeve-shaped body. A swellable elastomeric member (32) is spaced radially between the exterior surface of the mandrel and the elastomeric anti-extrusion member.

摘要翻译： 提供可膨胀的井下封隔器（10），用于将井下定位在井中以与钻孔的内表面或井下管的内表面密封。 封隔器包括位于用于膨胀的心轴（12）上方的可膨胀的弹性体套筒体（14）和刚性端环（16,18）。 弹性抗挤压构件（20）在套筒形体和刚性端环之间轴向间隔开，并且具有邻近端环的径向厚度大于邻近套管形体的径向厚度。 可膨胀的弹性构件（32）在心轴的外表面和弹性体抗挤压构件之间径向间隔开。

公开(公告)号：US08342239B2

公开(公告)日：2013-01-01

申请号：US13438663

申请日：2012-04-03

申请人： Andrew Kutac

发明人： Andrew Kutac

IPC分类号： E21B33/12

CPC分类号： E21B33/1216 ,  E21B33/1208

摘要： A swellable downhole packer (10) is provided for positioning downhole in a well to seal with the interior surface of a borehole or the interior surface of a downhole tubular. The packer includes a swellable elastomeric sleeve-shaped body (14) positioned over a mandrel (12) for swelling, and a rigid end ring (16,18). An elastomeric anti-extrusion member (20) is spaced axially between the sleeve-shaped body and the rigid end ring, and has a radial thickness adjacent the end ring greater than the radial thickness adjacent the sleeve-shaped body. A swellable elastomeric member (32) is spaced radially between the exterior surface of the mandrel and the elastomeric anti-extrusion member.

摘要翻译： 提供可膨胀的井下封隔器（10），用于将井下定位在井中以与钻孔的内表面或井下管的内表面密封。 封隔器包括位于用于膨胀的心轴（12）上方的可膨胀的弹性体套筒体（14）和刚性端环（16,18）。 弹性抗挤压构件（20）在套筒形体和刚性端环之间轴向间隔开，并且具有邻近端环的径向厚度大于邻近套管形体的径向厚度。 可膨胀的弹性构件（32）在心轴的外表面和弹性体抗挤压构件之间径向间隔开。

公开(公告)号：US07963321B2

公开(公告)日：2011-06-21

申请号：US12466440

申请日：2009-05-15

申请人： Andrew Kutac

发明人： Andrew Kutac

IPC分类号： E21B23/00

CPC分类号： E21B33/1216 ,  E21B33/1208

摘要： A swellable downhole packer (10) is provided for positioning downhole in a well to seal with the interior surface of a borehole or the interior surface of a downhole tubular. The packer includes a swellable elastomeric sleeve-shaped body (14) positioned over a mandrel (12) for swelling, and a rigid end ring (16,18). An elastomeric anti-extrusion member (20) is spaced axially between the sleeve-shaped body and the rigid end ring, and has a radial thickness adjacent the end ring greater than the radial thickness adjacent the sleeve-shaped body. A swellable elastomeric member (32) is spaced radially between the exterior surface of the mandrel and the elastomeric anti-extrusion member.

摘要翻译： 提供可膨胀的井下封隔器（10），用于将井下定位在井中以与钻孔的内表面或井下管的内表面密封。 封隔器包括位于用于膨胀的心轴（12）上方的可膨胀的弹性体套筒体（14）和刚性端环（16,18）。 弹性抗挤压构件（20）在套筒形体和刚性端环之间轴向间隔开，并且具有邻近端环的径向厚度大于邻近套管形体的径向厚度。 可膨胀的弹性构件（32）在心轴的外表面和弹性体抗挤压构件之间径向间隔开。

公开(公告)号：US20110259578A1

公开(公告)日：2011-10-27

申请号：US13109261

申请日：2011-05-17

申请人： ANDREW KUTAC

发明人： ANDREW KUTAC

IPC分类号： E21B33/12

CPC分类号： E21B33/1216 ,  E21B33/1208

摘要： A swellable downhole packer (10) is provided for positioning downhole in a well to seal with the interior surface of a borehole or the interior surface of a downhole tubular. The packer includes a swellable elastomeric sleeve-shaped body (14) positioned over a mandrel (12) for swelling, and a rigid end ring (16,18). An elastomeric anti-extrusion member (20) is spaced axially between the sleeve-shaped body and the rigid end ring, and has a radial thickness adjacent the end ring greater than the radial thickness adjacent the sleeve-shaped body. A swellable elastomeric member (32) is spaced radially between the exterior surface of the mandrel and the elastomeric anti-extrusion member.

摘要翻译： 提供可膨胀的井下封隔器（10），用于将井下定位在井中以与钻孔的内表面或井下管的内表面密封。 封隔器包括位于用于膨胀的心轴（12）上方的可膨胀的弹性体套筒体（14）和刚性端环（16,18）。 弹性抗挤压构件（20）在套筒形体和刚性端环之间轴向间隔开，并且具有邻近端环的径向厚度大于邻近套管形体的径向厚度。 可膨胀的弹性构件（32）在心轴的外表面和弹性体抗挤压构件之间径向间隔开。

公开(公告)号：US20100288486A1

公开(公告)日：2010-11-18

申请号：US12466440

申请日：2009-05-15

申请人： Andrew Kutac

发明人： Andrew Kutac

IPC分类号： E21B33/12

CPC分类号： E21B33/1216 ,  E21B33/1208

摘要： A swellable downhole packer (10) is provided for positioning downhole in a well to seal with the interior surface of a borehole or the interior surface of a downhole tubular. The packer includes a swellable elastomeric sleeve-shaped body (14) positioned over a mandrel (12) for swelling, and a rigid end ring (16,18). An elastomeric anti-extrusion member (20) is spaced axially between the sleeve-shaped body and the rigid end ring, and has a radial thickness adjacent the end ring greater than the radial thickness adjacent the sleeve-shaped body. A swellable elastomeric member (32) is spaced radially between the exterior surface of the mandrel and the elastomeric anti-extrusion member.

摘要翻译： 提供可膨胀的井下封隔器（10），用于将井下定位在井中以与钻孔的内表面或井下管的内表面密封。 封隔器包括位于用于膨胀的心轴（12）上方的可膨胀的弹性体套筒体（14）和刚性端环（16,18）。 弹性抗挤压构件（20）在套筒形体和刚性端环之间轴向间隔开，并且具有邻近端环的径向厚度大于邻近套管形体的径向厚度。 可膨胀的弹性构件（32）在心轴的外表面和弹性体抗挤压构件之间径向间隔开。

公开(公告)号：US06752205B2

公开(公告)日：2004-06-22

申请号：US10124662

申请日：2002-04-17

申请人： Andrew Kutac ,  Paul A. Reinhardt ,  Dennis E. Roessler ,  Charles O. Stokley

发明人： Andrew Kutac ,  Paul A. Reinhardt ,  Dennis E. Roessler ,  Charles O. Stokley

IPC分类号： E21B33127

CPC分类号： E21B33/127

摘要： An improved inflatable packer 10 is provided having a pre-stretched bladder to minimize Z-folding. An expandable outer body 11 includes an inner elastomeric bladder layer 12, a reinforcement layer 14 which may include overlapping slats or cable, and an outer elastomer cover layer 16 which may cover only a portion of the reinforcement layer 14. The bladder 12 may expand non-uniformly due to the variations in the cross-section of the borehole 20, irregularities in construction of the bladder 12, and/or difference in resistance to expansion between the covered portion and the exposed portion of the reinforcement layer 14. An improved inflatable packer and method comprises pre-stretching the bladder 12 to keep the bladder in tension and minimize the occurrence of Z-folds.

摘要翻译： 提供了一种改进的充气封隔器10，其具有预拉伸的囊以最小化Z-折叠。 可膨胀的外体11包括内部弹性体囊层12，可以包括重叠板条或电缆的加强层14以及可仅覆盖加强层14的一部分的外部弹性体覆盖层16.膀胱12可以膨胀， - 由于钻孔20的横截面的变化，气囊12的结构的不规则性和/或被覆部分和加强层14的暴露部分之间的膨胀阻力的差异，是均匀的。改进的充气封隔器 并且方法包括预拉伸膀胱12以保持膀胱张力并使Z折叠的发生最小化。