发明名称 |
GELLABLE TREATMENT FLUIDS WITH CLAY-BASED GEL RETARDERS AND RELATED METHODS |
摘要 |
Clay-based retarders may be useful in delaying the gel time of a gellable treatment fluid and, consequently, subterranean operations. For example, a method may involve providing a gellable treatment fluid comprising: an aqueous base fluid; a base polymer comprising an acrylamide monomer unit; a polymeric organic crosslinking agent comprising a crosslinkable polymer selected from the group consisting of polyethyleneimine, polyvinylamine, chitosan, any derivative thereof, any salt thereof, and any combination thereof; and a clay-based gel retarder; introducing the gellable treatment fluid into a wellbore penetrating a subterranean formation; and forming a gel with the gellable treatment fluid in at least a portion of the wellbore, at least a portion of the subterranean formation, or both. In some instances, producing the gellable treatment fluid may involve not pre-hydrating the clay-based gel retarder. In some instances, the gellable treatment fluid may not be thixotropic or pseudoplastic before introduction into the wellbore. |
申请公布号 |
US2016230072(A1) |
申请公布日期 |
2016.08.11 |
申请号 |
US201314380281 |
申请日期 |
2013.10.22 |
申请人 |
Halliburton Energy Services, Inc. |
发明人 |
Reddy B. Raghava;Eoff Larry;Pascarella Natalie |
分类号 |
C09K8/512;E21B43/04;E21B33/138;E21B43/16 |
主分类号 |
C09K8/512 |
代理机构 |
|
代理人 |
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主权项 |
1. A method comprising:
providing a gellable treatment fluid comprising:
an aqueous base fluid;a base polymer comprising an acrylamide monomer unit;a polymeric organic crosslinking agent comprising a crosslinkable polymer selected from the group consisting of polyethyleneimine, polyvinylamine, chitosan, any derivative thereof, any salt thereof, and any combination thereof; anda clay-based gel retarder; introducing the gellable treatment fluid into a wellbore penetrating a subterranean formation; and forming a gel with the gellable treatment fluid in at least a portion of the wellbore, at least a portion of the subterranean formation, or both. |
地址 |
Houston TX US |