超稠油污油泥复合调剖技术研究与应用
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摘要
为提高曙一区兴隆台超稠油油层开发效果,实现污油泥的有效利用,在杜84兴隆台杜84-47-35井试验污油泥调剖技术。研究污油泥复合调剖技术的乳化颗粒体系、污油泥凝胶体系、污油泥高温封口体系配方,并对体系的稳定性、耐温性、封堵性进行评测;模拟不同注入方式下的调剖封堵性能。研究表明,三体系最优配方分别为0.2%土粉+0.3%膨润土+2%橡胶粉、0.1%交联剂+0.15%聚丙烯酰胺、4.0%超细水泥+0.1%四氟化硅+0.3%烧碱+8.0%稀土固化剂,体系最优注入方式为1/2污油泥乳化颗粒+污油泥凝胶+1/2污油泥乳化颗粒+污油泥高温封口多段塞,最优调剖半径为8～11 m。实施后油井注汽压力升高1.6 MPa,周期产油增加2 161 t,汽窜方向减少3个,油层吸汽剖面得到改善。
In order to improve the development effect of Xinglongtai super heavy oil reservoir in Shu 1 area and realize the effective utilization of sewage sludge, the profile control technology of sewage sludge was tested in Du 84 Xinglongtai Du 84-47-35 well. The formulation of emulsified particle system, gel system and high temperature sealing system of sewage sludge compound profile control technology were studied, and the stability, temperature resistance and plugging performance of the system were evaluated. The results show that the optimum formulation of the three systems is 0.2% earth powder + 0.3% bentonite + 2% rubber powder, 0.1% cross-linking agent + 0.15% polyacrylamide, 4.0% ultrafine cement + 0.1% silicon tetrafluoride + 0.3% caustic soda + 8.0% rare earth curing agent, and the optimum injection mode is 1/2 sewage sludge emulsifying particle + sewage sludge Gel + 1/2 sewage sludge emulsifying particle + sewage sludge high temperature sealing. Multi section sluice; the best profile control radius is 8～11 m. After implementation, the steam injection pressure of oil wells increases by 1.6 MPa, cyclic oil production increases by 2 161 t, and the direction of steam channeling decreases by 3, and the steam absorption profile of oil reservoirs is improved.
In order to improve the development effect of Xinglongtai super heavy oil reservoir in Shu 1 area and realize the effective utilization of sewage sludge, the profile control technology of sewage sludge was tested in Du 84 Xinglongtai Du 84-47-35 well. The formulation of emulsified particle system, gel system and high temperature sealing system of sewage sludge compound profile control technology were studied, and the stability, temperature resistance and plugging performance of the system were evaluated. The results show that the optimum formulation of the three systems is 0.2% earth powder + 0.3% bentonite + 2% rubber powder, 0.1% cross-linking agent + 0.15% polyacrylamide, 4.0% ultrafine cement + 0.1% silicon tetrafluoride + 0.3% caustic soda + 8.0% rare earth curing agent, and the optimum injection mode is 1/2 sewage sludge emulsifying particle + sewage sludge Gel + 1/2 sewage sludge emulsifying particle + sewage sludge high temperature sealing. Multi section sluice; the best profile control radius is 8～11 m. After implementation, the steam injection pressure of oil wells increases by 1.6 MPa, cyclic oil production increases by 2 161 t, and the direction of steam channeling decreases by 3, and the steam absorption profile of oil reservoirs is improved.
引文
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[3] 李浩哲,梁琳琳,潘少杰,等.储层参数对蒸汽辅助重力泄油技术开发效果的影响[J].非常规油气,2017,4(1):85.
[4] 刘如杰.薄互层超稠油蒸汽吞吐井间汽窜规律及防治对策[J].中外能源,2016,21(10):64-68.
[5] 范玉平.含油污泥深度调剖技术在兴隆台采油厂的应用[C]//刘俊荣.辽河油田开发技术座谈会文集.北京:石油工业出版社,2002:352-362.
[6] 刘强,王浩,滕立勇,等.污油泥调剖技术在稠油热采开发中的研究与应用[J].精细石油化工进展,2016,17(5):24-27.
[7] 李翠霞,陈红均.耐温耐盐凝胶调剖技术研究进展[J].应用化工,2013,42(6):1142-1144.
[8] 金亚杰.国外聚合物驱油技术研究及应用现状[J].非常规油气,2017,4(1):116-122.
[9] 姚广聚,蒲万芬,荣元帅,等.抗盐性预交联凝胶调剖剂RY性能评价[J].精细石油化工进展,2004,5(11):33-34.
[10] 滕立勇,王尧,赵永鸿,等.辽河油田稠油污油泥调剖技术[J].特种油气藏,2016,23(5):134-137.