德惠低压敏感性储层低伤害压裂技术研究与应用  

Research and Application of Dehui Low Pressure Water Sensitivity Reservoir and Low Damage Fracturing Technology

作　　者：贾振甲 丁杨海 郝春成 马青庄 林其勇 龙增伟 

机构地区：[1]吉林油田采油工艺研究院油气藏改造技术研究中心,吉林松原138000 [2]吉林油田英台采油厂地质研究所,吉林白城137300

出　　处：《地质科技情报》2014年第5期211-215,共5页Geological Science and Technology Information

摘　　要：德惠断陷储层致密、压力系数低、水敏性强,自然产能极低甚至无。常规压裂技术难以有效改造储层,因此探索了体积压裂技术,优选了复合压裂液体系、CO2前置伴注技术,降低了储层伤害,增强了地层能量,提高返排速度。应用大排量-变排量施工技术、变粒径陶粒组合支撑技术,建立复杂裂缝网络系统,增强导流能力,增产效果明显,成本大幅度降低,为本区储层改造指明了方向。The reservoir in Dehui is a compact fault depression, with low pressure coefficient and strong water sensitivity. The natural productivity is very low if there is any and conventional fracturing technolo- gy isn＇t effectively transforming reservoir. We explored the volume fracturing techniques, and optimized of complex fracturing fluid system and the pre CO2 with injection technology which is used to reduce reservoir damage. We enhanced the formation energy, increasing the flow back rate, and used the technology for high delivery rate-variable delivery rate variable granule diameter proppants array supporting in order to establish complicated fracture network system which could enhanced conductivity. The effect of increasing production is very apparent and cost is greatly reduced. All of this point out the direction for the reservoir fracturing in Dehui fault depression.

关 键 词：低压 敏感性储层 低伤害 体积压裂 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]