Development and evaluation of high-temperature resistant gel plugging agent for heavy oil thermal recovery wells—by taking Chunguang Oilfield as an example
In view of the water channeling in horizontal wells for heavy oil thermal recovery in Chunguang Oilfield,Henan Province,through the study of high-temperature resistant gel plugging agent formula and performance evaluation,matching the double sealing-positioning plugging process,the effective plugging of horizontal wells at different water channeling positions was achieved.The gel plugging agent has a good heat resistance(350℃),good salt resistance(1.00×105 mg/L),and high plugging strength(breakthrough vac-uum remain over 0.065 MPa after high temperature).After on-site implementation,the water breakthrough speed of horizontal wells in heavy oil was effectively delayed,and the development effect was improved.
heavy oil thermal recoveryhorizontal wells,water channelinggel plugging agent
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