超高温储层深度酸压液体体系研究与应用  

Research on Acid Fracturing System with Improving Stimulated Reservoir Volume

作　　者：才博[1] 张以明[2] 金凤鸣[2] 卢拥军[1] 张亚明[3] 沈华[2] 

机构地区：[1]中石油勘探开发研究院廊坊分院 [2]华北油田分公司 [3]西南石油大学

出　　处：《钻井液与完井液》2013年第1期69-71,74,共4页Drilling Fluid & Completion Fluid

基　　金：国家科技重大专项"低渗;特低渗油气储层高效改造技术"(2011ZX05013);股份公司重大专项"低/特低渗透油藏有效开发技术"(2011B-1202)

摘　　要：为解决牛东1井储层改造超高温(201℃)液体造缝效率低、酸岩反应剧烈、管柱腐蚀高、改造程度差的突出技术瓶颈问题,对比了3套压裂液体系,开展了抗超高温200℃液体体系配方研究及耐温性能评价;利用数学计算及裂缝模拟方法,建立了能模拟100～350 m3不同用液量、造缝长度与储层温度场变化的新方法,优选出具有高效前置造缝性能及有效降温用量的压裂液,达到抗高温造长缝目的 ;在酸液体系上进行40余块岩屑酸蚀反应实验,利用4种酸液配方模拟与地层反应下酸液黏度性能实验,研究出具有耐缓速、清洁低伤害、低成本、固液转向功能的新配方体系,满足了该井深度体积酸压技术对液体的要求,填补了国内超高温200℃储层改造技术的空白。现场应用实现重大突破,对牛东及渤海湾盆地深层勘探具有里程碑意义。In well of NiuDong1,the ultra high temperature of 201 ℃of reservoir brings some difficulties that of low efficiency of fracturing,severe reaction of acid and rock,hard corrosion of pipeline and bad reconstruction effect.Three fracturing fluid systems are optimized to carry out high temperature(200 ℃) liquid system evaluation and formula research.By applying mathematical calculation and crack simulation method,it can simulate volume of 100-350 m 3,and the created fracture length and simulated reservoir temperature can be changed with the new method,as well as the pre-fracturing fluid is developed based on that.The formulation of the acid fluid system of high speed,low damage and cost is optimized by experiments of more than 40 cuttings corrosion and 4 acid fluid systems.It is the first time to operate in 200 ℃ domestic,and it has a significant meaning for exploration promotion of Bohai bay basin.

关 键 词：超高温深井 酸压 压裂液 改造体积 牛东1井 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]