大牛地气田分段多簇缝网压裂技术

Segmented multi?鄄cluster net fracturing technology in Daniudi gas field

梁潇 喻高明 黄永章 周志峰4

长江大学石油工程学院，湖北 武汉 430100 中国石油集团川庆钻探工程有限公司钻采工程技术研究院，陕西 西安 710018 低渗透油气田勘探开发国家工程实验室，陕西 西安 710018 中国石化中原油田分公司濮东采油厂，河南 濮阳 457001）

School of Petroleum Engineering, Yangtze University, Wuhan 430100, China Drilling & Production Technology Research Institute, CNPC Chuanqing Drilling Engineering Company Limited, Xi′an 710018, China National Engineering Laboratory of Low?鄄Permeability Oil & Gas Fields Exploration and Development, Xi′an 710018, China Pudong Oil Production Plant, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China)

针对大牛地气田储层品质逐渐变差，现有水平井分段压裂技术无法有效扩大储层改造体积，从而影响气井产能释放的问题，结合大牛地气田储层地质特征，按照缝网压裂理念，文中开展了大牛地致密砂岩储层缝网压裂可行性分析，进行了水平井分段多簇压裂射孔参数优化、缝网裂缝参数优化及施工参数优化研究，形成了一套适用于大牛地气田致密气藏的缝网压裂技术，确定了大牛地致密砂岩气藏水平井分段多簇压裂合理簇间距及裂缝参数等。该技术在大牛地气田现场应用2口井，平均单井产量较邻井提高了51%，无阻流量较邻井提高了50%，增产效果明显。

As the reservoir quality in Daniudi gas field gradually deteriorates, the existing horizontal well staged fracturing technology cannot effectively enlarge the reservoir stimulation volume, which affects the release of gas well productivity. According to the reservoir geological characteristics of the Daniudi gas field, and on the basis of "seam network fracturing"concept, the research on the seam network fracturing technology of tight sandstone reservoir in Daniudi gas field was carried out. Through the feasibility analysis of seam fracturing, the optimization of staged multi?鄄cluster perforation parameters of horizontal wells, the rational cluster spacing of multi?鄄cluster fracturing and the optimization of crack parameters and job parameters, a set of tight gas reservoir seam network fracturing technology suitable for the Daniudi gas field was created. Applying the technology to two wells in the Daniudi gas field, the average well yield is increased by 51%, and the open flow capacity is increased by 50% compared with the adjacent wells, showing obvious yield increasing effect.

10.6056/dkyqt201905016