特种油气藏2017，Vol.24Issue(4)：112-116,141,6.DOI:10.3969/j.issn.1006-6535.2017.04.021
致密储层大规模压裂试验开发效果分析
Development Efficiency Analysis of Large-scale Fracturing Testing in Tight Reservoirs
摘要
Abstract
In order to solve problems in tight reservoir development including low absorption capacity of water injec-tion wells,low production of individual oil wells and high decline rate,12 oil wells were selected from B oil field in Hailaer basin to test multi-zone large-scale fracturing technique. The technique increased the connectivity between wellbore and formation and improved fracturing efficiency by increasing the contact area between macro fractures and the reservoir. The testing results included:3 to 4 branch fractures were formed and the swept volume was 3 to 5 times of that for conventional fracturing by using degradable fiber network sand adding technique and selecting ce-ramsite and precoated sand as proppants,slickwater as prepad fluid,gel as carrying fluid;after large-scale fractu-ring,percentage of liquid producing zones in oil wells,percentage of liquid producing thickness and production in-creased considerably;the absorption and apparent water injectivity index increased in adjacent water injection wells and development conditions improved significantly;the effect of single well controlled reserves,the percentage of reservoirs thicker than 2 m,reservoir properties,formation energy maintaining level and scale of fracturing operation was significant. The research results are very important to achieving high and stable production of Hailaer oil field and other similar oil fields.关键词
致密储层/大规模压裂/增产/海拉尔油田Key words
tight reservoir/large-scale fracturing/stimulation/Hailaer oil field分类
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韩令春..致密储层大规模压裂试验开发效果分析[J].特种油气藏,2017,24(4):112-116,141,6.基金项目
国家自然科学基金"致密油储层提高采收率关键理论与方法研究"(51334007) （51334007）
