发明名称 |
Single horizontal well process for solvent/solute stimulation |
摘要 |
A solvent stimulation process whereby a viscosity reducing agent is circulated through a horizontal well via a production string. Said agent exits the production string and enters an annulus formed by said string and a liner. Said agent diffuses into the reservoir at a pressure below the reservoir pressure. As said agent diffuses through the reservoir under the influence of a concentration gradient, it reduces the oil's viscosity and makes it mobile. Simultaneously, oil of reduced viscosity migrates into the well under a pressure drawdown influence. A pseudo steady state production rate is achieved when convective movement of the oil of reduced viscosity is exactly counterbalanced by the diffusional rate of the viscosity reducing agent in a stimulated radial zone along said well. This stimulates a large volume of oil through the extensive surface area of the wellbore thus producing increased volumes of hydrocarbonaceous fluids from the reservoir.
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申请公布号 |
US5167280(A) |
申请公布日期 |
1992.12.01 |
申请号 |
US19910720075 |
申请日期 |
1991.06.24 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
SANCHEZ, JAMES M.;HAZLETT, RANDY D. |
分类号 |
C09K8/60;E21B43/16;E21B43/24;E21B43/30;E21B43/40 |
主分类号 |
C09K8/60 |
代理机构 |
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代理人 |
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地址 |
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