深层油气藏暂堵转向高效改造增产技术及应用  

High efficiency reservoir stimulation based on temporary plugging and diverting for deep reservoirs

作　　者：熊春明[1] 石阳[1] 周福建[2] 刘雄飞 杨贤友[1] 杨向同[3] XIONG Chunming;SHI Yang;ZHOU Fujian;LIU Xiongfei;YANG Xianyou;YANG Xiangtong(Research Institute of Petroleum Exploration&Development,PetroChina,Beijing 100083,China;China University of Petroleum,Beijing 102249,China;PetroChina Tarim Oilfield Company,Korla 841000,China)

机构地区：[1]中国石油天然气股份有限公司勘探开发研究院,北京100083 [2]中国石油大学(北京),北京102249 [3]中国石油天然气股份有限公司塔里木油田分公司,新疆库尔勒841000

出　　处：《石油勘探与开发》2018年第5期888-893,共6页Petroleum Exploration and Development

摘　　要：针对深层油气藏埋藏深、高温高压、低孔低渗、非均质性强等特点,提出采用暂堵分层分段与转向的改造工艺提高储集层动用程度,实现高效改造。研发了耐高温、高强度、可降解纳米酯类系列暂堵材料,开展模拟实验验证改造方法的可行性并对暂堵材料进行性能评价,最终形成了基于化学方法的暂堵转向高效改造增产技术,解决了高温高压深层油气藏机械工具分层分段改造风险大、施工成本高的问题。该技术已在中国10个深层油气田规模应用211井次,平均单井增产是常规技术的3.5倍。该技术的应用提高了储集层动用程度与改造效果,同时降低了施工难度和改造风险,大幅削减了分层分段改造施工成本。To tackle the challenge of great depth,high pressure and high temperature(HPHT),low permeability and porosity,serious heterogeneity in deep oil/gas reservoirs,this paper proposed high efficiency reservoir stimulation based on temporary plugging&diverting,which can realize multi-stage stimulation to improve stimulated rock volume(SRV)without mechanical isolating tools.A series of degradable nanometer ester temporary plugging material with high temperature resistance and high strength has been developed.The feasibility of the method was tested by modeling experiment,and the performance of the plugging material was evaluated.The high efficiency stimulating technology based on chemical plugging&diverting can avoid the problems of high cost and high risk operations by mechanical isolating tools in HPHT deep wells.This technology has been applied in 211 wells from 10 deep oil/gas reservoirs in China,with average production increment per well 3.5 times higher than conventional technologies.This technology enhanced reservoirs production and stimulation effect,lowered the operation difficulty and risk,and decreased multi-stage stimulation cost for deep reservoirs.

关 键 词：深层 油气藏 改造增产 暂堵转向 耐高温 高强度 可降解暂堵材料 

分 类 号：TE357[石油与天然气工程—油气田开发工程]