窄河道致密砂岩气藏开发关键参数一体化优化设计  

Integrated optimization design of key parameters for the development of narrow channel tight sandstone gas reservoirs

作　　者：侯明华 唐慧莹 肖红林 王艺云 张烈辉 HOU Minghua;TANG Huiying;XIAO Honglin;WANG Yiyun;ZHANG Liehui(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu 610500,China;Tight Oil and Gas Exploration and Development Project Department,Southwest Oil and Gas Field Company,PetroChina,Chengdu 610000,China)

机构地区：[1]油气藏地质及开发工程全国重点实验室,四川成都610500 [2]中国石油西南油气田公司致密油气勘探开发项目部,四川成都610000

出　　处：《断块油气田》2024年第6期1055-1065,共11页Fault-Block Oil & Gas Field

基　　金：国家自然科学基金面上项目“井-射孔-缝协同密切割压裂三维非平面缝网竞争扩展机制研究”(52374043);四川省自然科学基金面上项目“海相页岩储层超临界二氧化碳压裂-提采-地下封存耦合模拟研究”(2022NSFSC0186)。

摘　　要：JQ气田沙溪庙组气藏为窄河道致密砂岩气藏,具有河道薄窄、发育复杂、储层物性差、优质储层纵横向非均质性强等特点,存在实施井效果差异大、现有开发技术难以满足规模效益开发需求的问题。为提高单井产量、改善气田开发效果、提高开发效益,文中以JQ气田沙溪庙组6号砂组为研究对象,采用一体化数值模拟方法,对配产比、井轨迹方位、水平段长及井网部署等开发关键参数进行了优化研究。结果表明:在相同压裂规模下,随着储层物性的降低,人工裂缝长度增加;储层性质越差,合理配产比越高,砂体宽度变化对配产比的影响越小;水平井轨迹方向与最大水平主应力方向的夹角为90°时产能最优,但考虑砂体宽度的约束,对井轨迹方位进行小角度调整更有利于产能增加;储层性质越差,推荐巷道距、井距及经济水平段长度越小,合理井距随砂体宽度的增大而减小。通过建立针对JQ气田窄河道不同类型储层的差异化开发技术对策,能够加大气藏储量控制动用程度,延长稳产期,提高气藏的开发效果,对于同类型气藏高效开发具有指导意义。The Shaximiao Formation gas reservoir in JQ gas field is a narrow channel tight sandstone gas reservoir.It has characteristics of thin and narrow channels,complex development,poor reservoir physical properties and strong vertical and horizontal heterogeneity of high-quality reservoirs,with problems of large implementation well effect difference and difficulty for existing development technology to meet the demand for scale-effective development.In order to increase single well production,improve gas field development effect and enhance development benefits,the No.6 sand group of Shaximiao Formation in JQ gas field was taken as the research object,and the integrated numerical simulation method was used to conduct optimization research on key development parameters such as production allocation ratio,well trajectory orientation,horizontal section length and well pattern deployment.The research results show that under the same fracturing scale,as the physical properties of the reservoir decrease,the length of artificial fractures increases.The poorer the reservoir properties,the higher the reasonable production allocation ratio,and the less the impact of change in sand body width on production allocation ratio.The productivity is optimal when the angle between the horizontal well trajectory orientation and the maximum horizontal principal stress is 90°,and considering the sand body width constraint,small-angle adjustment of well trajectory orientation is conducive to increasing productivity.The poorer the reservoir properties,the smaller the recommended roadway spacing,well spacing and economic horizontal section length,and the reasonable well spacing decreases with the increase of sand body width.By establishing differentiated development technical countermeasures for different types of reservoirs in narrow channels of JQ gas field,it is possible to improve the degree of controlled utilization of gas reservoir reserves,extend the stable production period,and improve the development effect of the gas reservoir,whic

关 键 词：窄河道 致密砂岩气藏 合理配产比 井轨迹方位 

分 类 号：TE377[石油与天然气工程—油气田开发工程]