新型阴/非离子复合表面活性剂清洁压裂液体系
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摘要
针对阳离子型表面活性剂压裂液在地层中容易吸附和沉淀,从而造成地层二次伤害的问题,室内通过合成新型阴离子表面活性剂和非离子表面活性剂,研制出了一种新型阴/非离子复合表面活性剂清洁压裂液体系。综合评价结果表明:该清洁压裂液体系的耐温抗剪切能力较好,在130℃,170 s~(-1)条件下剪切100 min后,黏度仍可以保持在50 m Pa·s以上;体系悬砂能力强,在90℃时单颗陶粒的沉降速度仅为0.28 mm/s,小于常规胍胶压裂液中的0.93 mm/s;压裂液遇到煤油或地层水时会自动破胶,破胶液具有黏度低、界面张力小以及残渣体积分数少的特点。破胶液对储层天然岩心的伤害率小于10%,具有低伤害特性,能够达到良好的储层保护效果。现场压裂施工过程顺利,BM-312井压后产油量远大于使用常规胍胶压裂液的邻井BM-313井,压裂增产效果良好。
The cationic surfactant fracturing fluid is easily adsorbed and precipitated in the formation, causing two damage in the formation. A new type of anion/nonionic surfactant clean fluid system was developed by synthesizing new anionic surfactants and nonionic surfactants in the laboratory. The performance of the fracturing fluid system was evaluated comprehensively. The results show that the system has good resistance to high temperature and shear resistance. After cutting 100 min at 130 ℃ and 170 s~(-1), the viscosity can still remain above 50 mPa·s. The suspended ability of the system is strong, and the settling velocity of single ceramsite is only 0.28 mm/s at 90 ℃, which is smaller than that of conventional guanidine gel fracturing fluid 0.93 mm/s. Fracturing fluid can break glue automatically when it meets kerosene or formation water. The gel breaker has the characteristics of low viscosity, small interfacial tension and low residue content. The damage rate of the gel breaker to the natural core of the reservoir is less than 10%,which has low damage characteristics and can achieve good reservoir protection effect. The field test results show that the fracturing process is smooth and the oil production of BM-312 Well after fracturing is far greater than that of adjacent BM-313 Well which uses conventional guanidine fracturing fluid, achieving good fracturing stimulation effect.
The cationic surfactant fracturing fluid is easily adsorbed and precipitated in the formation, causing two damage in the formation. A new type of anion/nonionic surfactant clean fluid system was developed by synthesizing new anionic surfactants and nonionic surfactants in the laboratory. The performance of the fracturing fluid system was evaluated comprehensively. The results show that the system has good resistance to high temperature and shear resistance. After cutting 100 min at 130 ℃ and 170 s~(-1), the viscosity can still remain above 50 mPa·s. The suspended ability of the system is strong, and the settling velocity of single ceramsite is only 0.28 mm/s at 90 ℃, which is smaller than that of conventional guanidine gel fracturing fluid 0.93 mm/s. Fracturing fluid can break glue automatically when it meets kerosene or formation water. The gel breaker has the characteristics of low viscosity, small interfacial tension and low residue content. The damage rate of the gel breaker to the natural core of the reservoir is less than 10%,which has low damage characteristics and can achieve good reservoir protection effect. The field test results show that the fracturing process is smooth and the oil production of BM-312 Well after fracturing is far greater than that of adjacent BM-313 Well which uses conventional guanidine fracturing fluid, achieving good fracturing stimulation effect.
引文
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[19]赵梓平,李振东,沈文青,等.抗高温复合表面活性剂清洁压裂液体系研究与应用[J].断块油气田,2018,25(4):537-540.
[20]夏亮亮,周明,张灵,等.两性/阴离子表面活性剂清洁压裂液性能评价[J].油田化学,2015,32(3):341-344.
[21]张朝举,何兴贵,关兴华,等.国内低中温清洁压裂液研究进展及应用展望[J].钻采工艺,2009,32(3):93-96.
[2]赵军,张劲,肖丽佳,等.耐高温阴离子表面活性剂压裂液的性能评价及现场应用[J].钻采工艺,2015,38(1):86-90.
[3]赵鹏飞,刘通义,向静,等.GRF新型清洁压裂液在南翼山浅油藏的应用[J].钻采工艺,2013,36(4):83-85.
[4]王中泽,黄晶,曾昊,等.一种新型清洁压裂液体系的研究及应用[J].石油与天然气化工,2014,43(6):639-644.
[5]张锋三,任婷,张军涛,等.一种磺酸型表面活性剂压裂液的研究及应用[J].石油钻采工艺,2015,27(6):94-97.
[6]张兴,王超,欧阳坚,等.一种新型交联缔合清洁压裂液体系的研究及评价[J].钻采工艺,2016,39(4):72-75.
[7]刘晨,王凯,耿艳宏,等.清洁压裂液破胶液驱油体系实验研究[J].断块油气田,2017,24(1):96-100.
[8]MAY E A,BRITT L K,NOLTE K G,et al.The effect of yield stress on fracture fluid cleanup nolte,spe,dowell[J].Poultry Science,1997,77(4):516-22.
[9]CHASEB,CHEILOWSKIW,MARCINEWR,etal.Clearfracturing fluids for increase well productivity[J].Oilfield Review,1997,9(3):20-33.
[10]WANG J Y,HOLDITCH S A,MCYAY D A.Modeling fracture-fluid cleanup in tight-gas wells[J].SPE Journal,2010,15(3):783-793.
[11]李林地,张士诚,徐卿莲,等.无伤害VES压裂液的研制及其应用[J].钻井液与完井液,2011,28(1):52-54.
[12]刘友权,王小红,唐永帆.清洁压裂液在四川气田的应用[J].钻采工艺,2003,26(增刊1):116-120.
[13]王瞳煜,杨双春,潘一,等.阳离子表面活性剂清洁压裂液耐温性研究进展[J].化工进展,2017,36(12):4607-4612.
[14]周佩龄.压裂用非阳离子表面活性剂的合成和性能研究[D].成都:西南石油大学,2014.
[15]张朝举,何兴贵,关兴华,等.国内低中温清洁压裂液研究进展及应用展望[J].钻采工艺,2009,32(3):93-96.
[16]周亚琴,甄延忠,薛湘湘,等.一种新型阴离子型清洁压裂液的性能评价[J].延安大学学报(自然科学版),2015,34(4):55-57.
[17]陈馥,刘彝,王大勇,等.阳离子表面活性剂基压裂液的地层伤害性研究[J].钻井液与完井液,2007,24(6):62-65.
[18]何敏,张金生,李丽华,等.复合型清洁压裂液的性能评价[J].精细石油化工,2016,33(2):32-36.
[19]赵梓平,李振东,沈文青,等.抗高温复合表面活性剂清洁压裂液体系研究与应用[J].断块油气田,2018,25(4):537-540.
[20]夏亮亮,周明,张灵,等.两性/阴离子表面活性剂清洁压裂液性能评价[J].油田化学,2015,32(3):341-344.
[21]张朝举,何兴贵,关兴华,等.国内低中温清洁压裂液研究进展及应用展望[J].钻采工艺,2009,32(3):93-96.