深穿透大中型压裂增产改造技术研究与应用
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摘要
对于低渗透、埋藏深、致密油气藏,常规压裂技术不能有效地实现储层的增产改造。以新疆玛北油田为例,新疆玛北油田石油储量非常大,但是由于储层埋藏深、致密、低渗透的特点,常规压裂技术效果差、产量低。为了实现对储层的深穿透、长裂缝、高导流,提出了深穿透大中型压裂改造技术。通过对压裂工艺的优选,按照"一高三低"的原则优选压裂液,按照"三结合"的原则优选支撑剂。通过优化压裂施工参数,经现场压裂施工应用,压后产油量比压前有了大幅度的增加。
The petroleum reserves in Xinjiang Mabei Oilfield are very huge and have the characteristics of low permeability,deep bury and dense,in which the conventional fracturing technology cannot achieve effectively renovation to enhance production.In order to realize deep penetration,long fracture and high conductivity upon such reserves,a large and medium scale deep penetration fracturing technology is put forward.The fracturing process is optimized,the fracturing fluid is selected according to the principle of "one high and three low"and the proppant is selected according to the principle of "three combinations". Through optimizing the parameters of fracturing operation and applying fracturing on spot,the production of oil after fracturing has greatly increased than that before fracturing.
The petroleum reserves in Xinjiang Mabei Oilfield are very huge and have the characteristics of low permeability,deep bury and dense,in which the conventional fracturing technology cannot achieve effectively renovation to enhance production.In order to realize deep penetration,long fracture and high conductivity upon such reserves,a large and medium scale deep penetration fracturing technology is put forward.The fracturing process is optimized,the fracturing fluid is selected according to the principle of "one high and three low"and the proppant is selected according to the principle of "three combinations". Through optimizing the parameters of fracturing operation and applying fracturing on spot,the production of oil after fracturing has greatly increased than that before fracturing.
引文
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[2]陈志稳,韩永强,承宁.低渗透储层大型压裂改造技术新突破[J].油气井测试,2006,15(1):45-45.
[3]Suzhen L,Xuemei Y,Yun X,et al.Successful massive hydraulic fracturing of deviated wells in Fushan complex fault-block reservoir,Hainan island[R].SPE 183300,2016.
[4]Wang J,Zhuang X,Chen S,et al.Massive Re-fracturing modeling study to optimize water Injection strategy for Zhou-6 tight oil in Daqing Field,Northeast China[R].SPE 186056,2017.
[5]牛丽娟,徐健,于书新,等.致密油藏水平井压后产能评价技术及其应用[J].大庆石油地质与开发,2014,33(5):245-248.
[6]蒋廷学,李治平,才博,等.松辽盆地南部致密气藏低伤害大型压裂改造技术研究与试验[J].石油钻采工艺,2009,31(4):6-11.
[7]何生厚.油气开采工程师手册[M].北京:中国石化出版社,2006.
[8]章敬,李佳琦,史晓川,等.吉木萨尔凹陷致密油层压裂工艺探索与实践[J].新疆石油地质,2013,34(6):710-712.
[9]王雷,张士诚,张文宗,等.复合压裂不同粒径支撑剂组合长期导流能力实验研究[J].天然气工业,2005,25(9):64-66.
[10]周少伟,高伟,祖凯,等.致密碳酸盐岩储层水力加砂支撑裂缝导流能力实验研究[J].油气地质与采收率,2016,23(4):117-121.
[11]金智荣,郭建春,赵金洲,等.不同粒径支撑剂组合对裂缝导流能力影响规律实验研究[J].石油地质与工程,2007,21(6):88-90.