Study and Application of Big-Frac Treatment Technology on the Thin Oil Sandw ichs of Low Porosity and Extra-Low P ermeability in Block Gao 89
单位
( 1 中国石油大学, 东营 2 吉林油田合资合作部)
Organization
China University of P etroleum, Dongy ing 257077, China
摘要
针对高89块沙四段低孔、特低渗储层存在层多、层薄及微裂缝发育等特点, 从分
析该区块压裂改造难点入手, 找出了影响压裂效果的关键因素, 针对性地提出了压裂液体系优
化、综合降滤技术、综合控缝高技术和压裂测试技术, 实现了区块大型压裂改造。现场应用证
明, 新投产井压裂后均自喷生产, 稳产期长且增产效果显著。
Abstract
In v iew o f the character istics of the mu ltip le th in zones and m icrofractures in the Fourth section of the Shahejie Fo rma tion o f Gao89 Block, wh ich is com prised o f the low poro sity and the ex tra- low pe rmeability zones, W e found out the key factors wh ich influence the fractur ing effec t and put forw ard the me thods, such as fracturing fluid opitim ization, comb ined fluid loss contro lling , comb ined frac ture-he ight contro l and fractu re testing techn ique, by the analysis of the fracturing difficulties. F inally, w e im plem ent the b ig- frac treatment. A ll brought- in w e lls are blow ing natura lly through the fie ld app lication and have a long steady production per iod. The production has been increased obv iously.
关键词：
低渗透;薄互储层;大型压裂;工艺技术;高89块;
Keywords:
Low pe rmeability, Thin o il sandw ich, B igfrac treatm ent, Techno logy, Gao89 B lock;
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