强非均质性碳酸盐岩气藏储集层再划分及不同生产阶段技术对策——以四川盆地磨溪—高石梯地区震旦系为例  

Subdivision of strongly heterogeneous carbonate gas reservoir and technical countermeasures in different production stages:Case study of Sinian in Sichuan Basin

作　　者：蔡珺君 彭先 李骞 占天慧 朱占美 李文 甘笑非 邓庄[2] 王家树[2] CAI Jun-jun;PENG Xian;LI Qian;ZHAN Tian-hui;ZHU Zhan-mei;LI Wen;GAN Xiao-fei;DENG Zhuang;WANG Jia-shu(Exploration and Development Research Institute,PetroChina Southwest Oil&Gas Field Company,Chengdu 610051,China;Central Sichuan Division,PetroChina Southwest Oil&Gas Field Company,Suining 629000,China)

机构地区：[1]中国石油西南油气田公司勘探开发研究院,四川成都610041 [2]中国石油西南油气田公司川中油气矿,四川遂宁629000

出　　处：《天然气地球科学》2021年第6期851-860,共10页Natural Gas Geoscience

基　　金：中国石油天然气股份有限公司重大科技专项“西南油气田天然气上产300亿立方米关键技术研究与应用”(编号:2016E-06)资助。

摘　　要：四川盆地震旦系灯影组气藏为古老、深层、低孔以及强非均质性的岩溶碳酸盐岩气藏,受现有行业标准在划分储集层类型上的局限,动静态资料响应不能一一对应。为此,以静态资料为基础,从开发角度对四川盆地震旦系灯影组气藏的储集层进行二次划分,明确各类储集层的动态响应特征,制订不同类型储集层气井在不同生产阶段的技术对策。技术对策包括:(1)明确5类储集层的生产组织对策,即缝洞Ⅰ类、孔洞Ⅰ类应实施高产量高油压策略,其中孔洞Ⅰ类配产比优化至1/4~1/3;缝洞Ⅱ类、孔洞Ⅱ类、孔隙Ⅰ类应实施低产量低油压策略,其中缝洞Ⅱ类配产比优化至1/12~1/10,已落实储层类型的气井按此策略优化配产,并划分生产流动段、开展早期动态储量评价;(2)对于已投产但储层类型不明确的气井,评价气井生产是否到达稳定,初步判断储层类型,开展动态监测,落实储层细分类型,按对策(1)优化气井配产;(3)对于建产井,试油后按照静态资料分大类,投产后按方案设计配产,准确录取动态资料,为储层类型的确定做好准备。The Sinian Dengying Formation gas reservoir in Sichuan Basin is an ancient,deep,low-porosity and strongly heterogeneous karst carbonate gas reservoir.Due to the limitation of the existing industry standards on reservoir types,the response of dynamic and static data can not be one-to-one correspondence.Therefore,based on the static data,the reservoir of Sinian Dengying Formation gas reservoir in Sichuan Basin was subdivided into two stages from the perspective of development,the dynamic response of various reservoirs were clarified,and the technical countermeasures for gas wells in different production stages of different types of reservoirs are formulated.The technical countermeasures include:(1)The production organization strategies for five types of reservoirs are defined,i.e.the strategy of high production and high pressure should be implemented for fractured-vuggyⅠand porous-vuggyⅠ,the ratio of porous-vuggyⅠis optimized to 1/4-1/3;the strategy of low production and low pressure should be implemented for fractured-vuggyⅡ,porous-vuggyⅡand pore I,the ratio of fractured-vuggyⅡis optimized to 1/12-1/10.According to this strategy,the gas wells with established reservoir type should be optimized and the production flow sections should be divided and the early dynamic reserve evaluation should be carried out.(2)For those that have been put into production but the reservoir type is not clear,it is necessary to evaluate whether the production of gas wells is stable,preliminarily determine the reservoir type,carry out dynamic monitoring,implement reservoir subdivision types,and optimize gas well production allocation according to countermeasures(1).(3)For production building wells,they should be divided into different types according to static data after oil testing,and production allocation should be designed according to the scheme after production.Dynamic data should be accurately enrolled to prepare for the determination of reservoir types.The research results provide an effective support for the upper p

关 键 词：四川盆地 震旦系灯影组气藏 储集层 划分 动态特征 技术对策 

分 类 号：TE31[石油与天然气工程—油气田开发工程]