基于油层保护的暂堵型压井液技术研究
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摘要
在漏失井的完井与修井作业过程中,为了避免大量修井液或完井液漏失进入地层,研制了一种基于油层保护的暂堵型压井液或隔离液。本文研究了暂堵剂组成、分子结构表征及暂堵型压井液的暂堵机理、配方、悬浮稳定性、封堵性能及封堵层的降解性能。实验结果表明,暂堵型压井液在100℃下封堵性能优良,其形成的封堵层在24 h内完全降解,对储层无伤害。
In the process of completion and workover of the lost well, in order to avoid the formation of a large amount of workover fluid or completion fluid into the formation, a temporary plugging fluid or isolation fluid. In this paper, the composition and molecular structure of the temporary plugging agent, the temporary plugging mechanism, the formula, the suspension stability, the plugging performance and the degradation performance of the plugging layer are studied. The experimental results show that the plugging performance of the temporary plugging fluid is excellent at 100 ℃, and the formation of the plugging layer can be completely degraded in the 24 h, which has no harm to the reservoir.
In the process of completion and workover of the lost well, in order to avoid the formation of a large amount of workover fluid or completion fluid into the formation, a temporary plugging fluid or isolation fluid. In this paper, the composition and molecular structure of the temporary plugging agent, the temporary plugging mechanism, the formula, the suspension stability, the plugging performance and the degradation performance of the plugging layer are studied. The experimental results show that the plugging performance of the temporary plugging fluid is excellent at 100 ℃, and the formation of the plugging layer can be completely degraded in the 24 h, which has no harm to the reservoir.
引文
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[2]Menaul,Paul L.Halliburton Oil Well Cementing Co.U.S.Patent No.2,122,483,1937.
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[4]Dean W.,Marina B.Schlumberger Technolgoy Corporation U.S.Patent No.20060113077A1,2006.
[5]Trinidad Munoz JR.Halliburton Energy Services company,U.S.Patent No.20040261996A1,2004.
[6]Hongyu Luo,Dwight D.F.Halliburton Energy Services company,U.S.Patent No.8109335B2,2012.
[2]Menaul,Paul L.Halliburton Oil Well Cementing Co.U.S.Patent No.2,122,483,1937.
[3]Harrison,N.W.Diverting Agents History and Application[J].Journal of Petroleum Technology,1972,SPE 3653,593-598.
[4]Dean W.,Marina B.Schlumberger Technolgoy Corporation U.S.Patent No.20060113077A1,2006.
[5]Trinidad Munoz JR.Halliburton Energy Services company,U.S.Patent No.20040261996A1,2004.
[6]Hongyu Luo,Dwight D.F.Halliburton Energy Services company,U.S.Patent No.8109335B2,2012.