顺北油田上浮剂封堵及泵注参数实验研究  

Experimental study on plugging performance and pumping parameters of floating agent in Shunbei Oilfield

作　　者：李新勇[1] 纪成[1] 王涛[2] 郭天魁[3] 王晓之 曲占庆[3] LI Xinyong;JI Cheng;WANF Tao;GUO Tiankui;WANG Xiaozhi;QU Zhanqing(Research Institute of Petroleum Engineering Technology,Northwest Oilfield Company,SINOPEC,Urumqi 830000,China;Research Institute of Engineering Technology,Xinjiang Oilfield Company,PetroChina,Karamay 834000,China;School of Petroleum Engineering,China University of Petroleum,Qingdao 266580,China;Henan Management Office of National Pipe Network Yuji Pipeline Co.,Ltd,Puyang 457000,China)

机构地区：[1]中国石化西北油田分公司石油工程技术研究院,新疆乌鲁木齐830000 [2]中国石油新疆油田分公司工程技术研究院,新疆克拉玛依834000 [3]中国石油大学(华东)石油工程学院,山东青岛266580 [4]国家管网榆济管道有限责任公司河南管理处,河南濮阳457000

出　　处：《断块油气田》2021年第1期139-144,共6页Fault-Block Oil & Gas Field

基　　金：国家自然科学基金项目“热储层水力压裂低温诱导热应力致裂机理研究”(51874338)。

摘　　要：塔里木盆地顺北油田碳酸盐岩储层埋藏深、温度高且厚度大,采用常规酸压工艺难以实现有效纵向改造及安全高效开发,为此提出了上浮剂隔挡控缝高酸压工艺。基于现场地质参数及酸压施工要求,优选了漂珠作为目标工艺的上浮剂;利用上浮剂隔板性能评价装置,明确了颗粒组合和最优质量比;基于大型可视化平行板颗粒运移铺置模拟装置,优化了相应的泵注参数。结果表明:优选堆积密度为0.4~0.8 g/cm^3的漂珠作为耐高温上浮剂,颗粒(20~40,100~120,180~200目)的最优质量比为1.0∶2.0∶5.2,封堵厚度15.9 cm,可以满足10 MPa的最高暂堵压力要求。采用低黏度滑溜水压裂液时,建议以0.350~0.625 m/s的线性流速泵注上浮剂,质量分数应控制在5%左右,注入后仅需停泵1次,各级颗粒混合注入即可。研究成果为顺北油田及相关缝高控制改造工艺的有效实施提供了技术支撑。The carbonate reservoirs in Shunbei of Tarim Basin are characterized by deep burial,high temperature and large thickness.It is difficult to realize the effective longitudinal transformation and safe development by using the conventional acid fracturing.Therefore,the fracture height controlled acid fracturing with floating agent plugging is put forward.Based on the field geological parameters and the construction requirement,the floating beads were selected as the floating agent.The particle combination and its optimal mass ratio were obtained by using the self-developed experimental device for evaluating the floating agent plugging,and the pumping parameters were optimized with the large-scale visualization parallel-plate stimulating device for particles migration and placement.The results indicate that the floating beads with a density of 0.4-0.8 g/cm^3 is suitable for the floatation agent with high temperature resistance.The optimal particle mass ratio of 20-40,100-120 and 180-200 mesh is 1.0∶2.0∶5.2.The placement thickness of 15.9 cm can meet the maximum sealing pressure requirement of 10 MPa.It is recommended to use low viscosity slippery water fracturing fluid to pump the floating agent at the linear flow rate of 0.350-0.625 m/s,with the concentration of the floating agent controlled at about 5%.The pump should be stopped only once after injection,and the third rank particles can be mixed injected.The research provides experimental support for the effective implementation of fracture height controlled fracturing in Shunbei Oilfield.

关 键 词：控缝高 上浮剂 颗粒质量比 工艺参数 顺北油田 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]