摘要
中国致密油气储层非均质性强、砂体薄而分散,常规水力压裂技术难以实现高效开发。文章对当前储层改造技术进行了现状分析,针对中国致密油气藏开发难点,明确并总结提出了适用于中国陆相页岩油气高效开发的基于水力喷射与径向水平井的分散砂体同步改造技术、基于极限限流与暂堵转向的精准压裂技术、基于微支撑剂与变黏滑溜水的复杂缝网强化加砂技术、基于CO_(2)前置压裂与纳米乳液的基质深度改性技术,最终提出了适用于非均质、分散砂体与混合润湿致密油气藏的精准压裂-提高采收率一体化技术,为中国致密油气藏经济高效开发指明方向。
Tight oil and gas reservoirs in China are highly heterogeneous,with thin and scattered sand bodies,which cannot be efficiently developed by conventional hydraulic fracturing technology.In this paper,current reservoir simulation technologies were reviewed.In addition,in order to solve challenges in developing tight oil and gas reservoirs in China,this paper summarized several key technologies suitable for efficiently developing continental shale oil and gas in China,including synchronous stimulation technology of scattered sand bodies based on the hydraulic jet and radial horizontal wells,precise fracturing technology based on extreme limited-entry design and temporary plugging and diversion,sand reinforcement technology of complex fracture network based on micro-proppants and variable viscous slickwater,and deep matrix modification technology based on CO,pre-fracturing and nanoemulsions.Finally,an integrated technology of precise fracturing with enhanced oil recovery is proposed,and it is suitable for heterogeneous and scattered sand bodies and mixed wet and tight oil and gas reservoirs.Furthermore,the technology points out the direction for the economic and efficient development of tight oil and gas reservoirs in China.
作者
周福建
李根生
刘皓
刘雄飞
田守嶒
梁天博
ZHOU Fujian;LI Gensheng;LIU Hao;LIU Xiongfei;TIAN Shouceng;LIANG Tianbo(National Key Laboratory of Petroleum Resources and Engineering,China University of Petroleum(Beijing),Beijing 102249,China)
出处
《前瞻科技》
2023年第2期75-88,共14页
Science and Technology Foresight
基金
国家自然科学基金面上项目(52274051,52174045)
中国石油天然气集团有限公司-中国石油大学(北京)战略合作科技专项(ZLZX2020-01)
国家自然科学创新研究群体项目(51521063)。
关键词
致密油气
水力压裂
提高采收率
径向水平井
精准压裂
基质改性
tight oil and gas
hydraulic fracturing
enhanced oil recovery
radial horizontal well
precision fracturing
matrix modification
