公开(公告)号：US07328743B2

公开(公告)日：2008-02-12

申请号：US11534542

申请日：2006-09-22

申请人： Alex Turta ,  Fred Wassmuth ,  Vijay Shrivastava ,  Ashok Singhal

发明人： Alex Turta ,  Fred Wassmuth ,  Vijay Shrivastava ,  Ashok Singhal

IPC分类号： E21B33/138 ,  E21B43/20 ,  E21B43/22 ,  E21B43/30

CPC分类号： E21B43/20 ,  E21B43/305 ,  E21B43/32

摘要： A modified toe-to-heel waterflooding (TTHW) process is provided for recovering oil from a reservoir in an underground formation. After establishing the conventional TTHW waterflood, the process includes placing a chemical blocking agent at the watered out producing toe portion of the horizontal leg of the production well to create a blockage in the producing toe portion and to create a new producing toe portion in an open portion of the horizontal leg adjacent the blockage through which most of the production takes place. Production is then continued through the new producing toe portion and the open portion of the horizontal leg of the production well. These blocking and producing steps can be continued to progressively block producing toe portions in a direction toward the vertical pilot portion of the production well.

摘要翻译： 提供了一种改进的脚趾到脚跟注水（TTHW）工艺，用于从地下地层的储层中回收油。 在建立传统的TTHW注水后，该方法包括将化学阻塞剂放置在生产井的水平腿的浇水生产脚趾部分，以在生产趾部产生堵塞，并在开口中产生新的生产趾部 靠近大多数生产发生的堵塞的水平腿的部分。 然后通过新生产的脚趾部分和生产井的水平腿的开口部分继续生产。 这些堵塞和制造步骤可以继续沿着朝向生产井的垂直先导部分的方向逐渐地阻止制造趾部。

公开(公告)号：US08016039B2

公开(公告)日：2011-09-13

申请号：US10585397

申请日：2005-01-06

申请人： Laurie A. Hodgins ,  Fred Wassmuth

发明人： Laurie A. Hodgins ,  Fred Wassmuth

IPC分类号： E21B33/00

CPC分类号： E21B33/138 ,  C09K8/5083 ,  C09K8/512 ,  C09K8/518

摘要： A method of reducing water influx into a wellbore, wherein the wellbore is in fluid communication with a subterranean formation such as a gas producing formation or gas reservoir. The method particularly places a gelant in a desired position down the wellbore and into the formation in order to thereby reduce the influx of water and enhance the resulting gas production. The method includes the steps of first introducing a gelant into the wellbore and second introducing a temporarily stable foam into the wellbore in order to overdisplace the gelant from the wellbore and into the formation.

摘要翻译： 一种减少水流入井筒的方法，其中井筒与诸如产气地层或气藏的地层形成流体连通。 该方法特别地将凝胶剂放置在井筒下方的期望位置并进入地层中，以便减少水的流入并增加产生的气体产生。 该方法包括以下步骤：首先将凝胶剂引入井孔中，然后将暂时稳定的泡沫引入井眼中，以便将凝胶剂从井筒过度排出并进入地层。

公开(公告)号：US20070068674A1

公开(公告)日：2007-03-29

申请号：US11534542

申请日：2006-09-22

申请人： Alex Turta ,  Fred Wassmuth ,  Vijay Shrivastava ,  Ashok Singhal

发明人： Alex Turta ,  Fred Wassmuth ,  Vijay Shrivastava ,  Ashok Singhal

IPC分类号： E21B43/30 ,  E21B43/16

CPC分类号： E21B43/20 ,  E21B43/305 ,  E21B43/32

摘要： A modified toe-to-heel waterflooding (TTHW) process is provided for recovering oil from a reservoir in an underground formation. After establishing the conventional TTHW waterflood, the process includes placing a chemical blocking agent at the watered out producing toe portion of the horizontal leg of the production well to create a blockage in the producing toe portion and to create a new producing toe portion in an open portion of the horizontal leg adjacent the blockage through which most of the production takes place. Production is then continued through the new producing toe portion and the open portion of the horizontal leg of the production well. These blocking and producing steps can be continued to progressively block producing toe portions in a direction toward the vertical pilot portion of the production well.

摘要翻译： 提供了一种改进的脚趾到脚跟注水（TTHW）工艺，用于从地下地层的储层中回收油。 在建立传统的TTHW注水后，该方法包括将化学阻塞剂放置在生产井的水平腿的浇水生产脚趾部分，以在生产趾部产生堵塞，并在开口中产生新的生产趾部 靠近大多数生产发生的堵塞的水平腿的部分。 然后通过新生产的脚趾部分和生产井的水平腿的开口部分继续生产。 这些堵塞和制造步骤可以继续沿着朝向生产井的垂直先导部分的方向逐渐地阻止制造趾部。

公开(公告)号：US20120199355A1

公开(公告)日：2012-08-09

申请号：US13502489

申请日：2010-09-27

申请人： Mehmet Yaman Boluk ,  Jiang Bai ,  Blaine Francis Hawkins ,  Robert Jost ,  Fred Wassmuth ,  Liyan Zhao

发明人： Mehmet Yaman Boluk ,  Jiang Bai ,  Blaine Francis Hawkins ,  Robert Jost ,  Fred Wassmuth ,  Liyan Zhao

IPC分类号： E21B43/16

CPC分类号： E21B43/20 ,  C09K8/588

摘要： A water flooding composition in a method of secondary hydrocarbon recovery. The water flooding composition includes water and a thickening polymer. The thickening polymer includes a hydroxyethyl cellulose backbone polymer having a molecular weight of between about 1,000,000 and about 2,000,000 and a hydrophobic modifier. The hydrophobic modifier has a substitution level in the thickening polymer of between about 0.1 percent and about 2 percent by weight of the thickening polymer. The hydrophobic modifier is an alkyl hydrocarbon based material containing between about 10 and about 24 unsubstituted carbon atoms per group. The thickening polymer has a concentration in the water flooding composition of between about 0.01 percent and about 1 percent by weight of the water flooding composition. The water flooding composition is formulated within these ranges so that the water flooding composition has a suitable viscosity/mobility and so that the water flooding composition is injectable.

摘要翻译： 二次烃回收方法中的驱水组合物。 水驱组合物包括水和增稠聚合物。 增稠聚合物包括分子量为约1,000,000至约2,000,000的羟乙基纤维素骨架聚合物和疏水改性剂。 疏水改性剂在增稠聚合物中的取代度为增稠聚合物重量的约0.1％至约2％。 疏水改性剂是含有每组约10至约24个未取代碳原子的烷基烃基材料。 增稠聚合物在驱水组合物中的浓度为水驱组合物重量的约0.01％至约1％。 将驱油组合物配制在这些范围内，使得驱水组合物具有合适的粘度/流动性，并且使得注水组合物是可注射的。

公开(公告)号：US20080135243A1

公开(公告)日：2008-06-12

申请号：US10585397

申请日：2005-01-06

申请人： Laurie A. Hodgins ,  Fred Wassmuth

发明人： Laurie A. Hodgins ,  Fred Wassmuth

IPC分类号： E21B43/22

CPC分类号： E21B33/138 ,  C09K8/5083 ,  C09K8/512 ,  C09K8/518

摘要： A method of reducing water influx into a wellbore, wherein the wellbore is in fluid communication with a subterranean formation such as a gas producing formation or gas reservoir. The method particularly places a gelant in a desired position down the wellbore and into the formation in order to thereby reduce the influx of water and enhance the resulting gas production. The method includes the steps of first introducing a gelant into the wellbore and second introducing a temporarily stable foam into the wellbore in order to overdisplace the gelant from the wellbore and into the formation.

摘要翻译： 一种减少水流入井筒的方法，其中井筒与诸如产气地层或气藏的地层形成流体连通。 该方法特别地将凝胶剂放置在井筒下方的期望位置并进入地层中，以便减少水的流入并增加产生的气体产生。 该方法包括以下步骤：首先将凝胶剂引入井孔中，然后将暂时稳定的泡沫引入井眼中，以便将凝胶剂从井筒过度排出并进入地层。