发明名称 |
Delayed Viscosity Well Treatment Methods and Fluids |
摘要 |
A well treatment method includes forming a well treatment fluid by combining ingredients including a polymer, a crosslinker, an acidifying substance, and a base fluid. Crosslinking increases viscosity of the fluid during a development time. A pH decrease is controlled during the development time using the acidifying substance. The method also includes delaying the development time of the viscosity increase by controlling the pH decrease. A well treatment method includes forming a well treatment fluid by combining ingredients including a hydratable polymer, a crosslinker, an acidifying substance, and a base fluid. The method includes delaying development time of a viscosity increase by controlling a pH decrease without adding further acidifying substance after combining the polymer, crosslinker, acidifying substance, and base fluid. A well treatment fluid formulated with ingredients include a base fluid, a polymer, a crosslinker, and an acidifying substance. The acidifying substance is configured to delay development time. |
申请公布号 |
US2015053409(A1) |
申请公布日期 |
2015.02.26 |
申请号 |
US201313973756 |
申请日期 |
2013.08.22 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
LEGEMAH MAGNUS U.;CARMAN PAUL S.;VENUGOPAL RUPA;SUN HONG |
分类号 |
C09K8/74;E21B43/26;C09K8/68;E21B43/16 |
主分类号 |
C09K8/74 |
代理机构 |
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代理人 |
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主权项 |
1. A well treatment method comprising:
forming a well treatment fluid by combining ingredients including a polymer, a crosslinker, an acidifying substance, and a base fluid that is not cross-linked; crosslinking the polymer in the base fluid using the crosslinker, the crosslinking increasing viscosity of the well treatment fluid during a development time after combining the polymer, crosslinker, acidifying substance, and base fluid; controlling a pH decrease during the development time in the well treatment fluid using the acidifying substance; delaying the development time of the viscosity increase by controlling the pH decrease; and treating a well with the well treatment fluid exhibiting the increased viscosity. |
地址 |
HOUSTON TX US |