库车山前大北地区裂缝性气藏储层改造评价研究  

Reservoir Stimulation Evaluation of Dabei Fractured Sandstone Gas Reservoirs of Kuqa Foreland

作　　者：田东江[1] 牛新年[1] 郜国喜[1] 张秋生[1] 

机构地区：[1]塔里木油田分公司勘探开发研究院,新疆库尔勒841000

出　　处：《油气井测试》2012年第5期21-23,76,共3页Well Testing

摘　　要：大北地区气藏主要产层为白垩系巴什基奇克组,属高压低孔低渗裂缝性砂岩储层,由于天然裂缝发育,在钻井过程中泥浆伤害比较严重,多数井必须通过储层改造才能达到经济开发的要求。迄今为止本区共进行11井次酸化解堵作业和5井次的加砂压裂改造。从压裂施工曲线拟合,试井资料解释和改造后产能对比等多方面对储层改造效果进行了综合分析,研究结果对该类型气藏下一步储层改造工作有重要的指导意义。Cretaceous Bashijiqike group is the main pay formation at Dabei gas reservoir, which belongs to sand formation with natural fracture, high pressure, low porosity, and low permeability. Because of these characteristics, phenomenon of mud pollution is severe during the process of drilling, which means that most of the wells require reservoir stimulation to achieve economic benefit. So far, acidification has been carried out for 11 wells, while sand fracturing for 5 wells in this area. On that basis, a comparative analysis is carried out comprehensively according to aspects such as fracturing curve, well interpretation and post fracturing deliverability. The analysis shows guiding significance for further stimulation of similar gas reservoirs.

关 键 词：加砂压裂 酸化 效果分析 裂缝性气藏 

分 类 号：TE319[石油与天然气工程—油气田开发工程]