公山庙油田沙一河道砂储层体积压裂应用效果分析

龙建勋 林建平 张毅 张仕强 谯玲

中国石油西南油气田分公司川中油气矿，四川 遂宁 629000

Central Sichuan Oil and Gas Field, Southwest Oil and Gas Field Company, PetroChina, Suining 629000, China

公山庙油田沙一河道砂储层较厚，具有超低孔渗、非均质性强、油气分散、单井产量低、递减快、采收率低等特点，属于典型的致密储层。传统的酸化解堵已不能满足油藏开发的需要，借鉴国内外超低孔渗、非常规油田成功开发经验，在沙一河道砂储层开展了2口水平井的体积压裂试验，探索体积压裂工艺在提高致密砂岩储层单井产量方面的应用效果。井下压裂监测与生产结果分析表明，体积压裂工艺在沙溪庙组沙一河道砂储层中具有应用可行性，造缝能力强，能够明显提高单井产量，可以作为该类储层今后主要的储层改造手段进行推广。

S1 channel sand reservoir in Gongshanmiao Oilfield is thick and has the characteristics of low porosity, low permeability, strong heterogeneity, oil and gas dispersion, low oil production, fast decreasing and low recovery efficiency, which belongs to the typical tight reservoir. Traditional acid plugging can not meet the needs of reservoir development. According to the successful experiences of ultra-low permeability and unconventional oil reservoir development at home and abroad, volume fracturing is tested in two horizontal wells to explore the application effect of volume fracturing technology in improving the single well production of tight sandstone reservoir. The results of downhole fracturing monitoring and trial production show that the volume fracturing technology has the application feasibility in S1 channel sand reservoir of Shaximiao Formation, which can significantly improve the single well production and has strong fracture-making ability. This technology can be popularized as a main measure of reservoir stimulation for this kind of reservoir in the future.

10.6056/dkyqt201501019