摘要
新疆某油田属于中孔、特低渗的孔隙-裂缝双重介质且底水能量充足的块状火山岩油藏。借鉴国内外一些对于特殊和难动用地质储量采用水平井开采的经验,却不能达到理想的效果。运用数值模拟软件对水平井产能影响因素进行研究,同时结合正交实验设计和灰色关联分析法确定了地质参数和工作制度对水平井产能的重要程度排序:工作制度、水平段长度、避水高度、裂缝垂直水平渗透率比、底水倍数,并且定量给出了各因素对水平井产能的贡献度,依次为:32.7%,27.2%,17%,13.6%,9.5%。该结论针对不同井场进行排采制度优化,以指导该油藏内油井的合理排采,为该油田火山岩油藏的高效开发提供理论依据,且可以在其他相近油田推广使用。
An oilfield in Xinjiang belongs to a volcanic rock reservoir with medium porosity, ultra-low permeability, porosity and fracture dual medium and abundant bottom water energy. Although learning from development experiences of some special and difficult geological reserves at home and abroad by horizontal well technology, desired effect was not achieved. Influencing factors of horizontal well productivity were studied by using numerical simulation software. And the orthogonal experiment design and grey correlation analysis method were used to determine the order of importance of geological parameters and working system on horizontal well productivity: working system, horizontal section length, water avoidance height, cracks vertical horizontal permeability ratio, bottom water ratio. And then the contribution degree of each factor on horizontal well productivity was given as follows: 32.7%, 27.2%, 17%, 13.6%, 9.5%.This conclusion can be used to optimize the drainage system for different wells in order to guide the reasonable drainage of oil wells in the reservoir, provide a theoretical basis for the efficient development of volcanic reservoir in the oilfield, and can be popularized in other similar oilfields.
作者
阮迪
沈畅
郭阳凯
刘德华
李玉杰
RUAN Di;SHEN Chang;GUOYang-kai;LIU De-hua;LI Yu-jie(School of Petroleum Engineering,Yangtze University,Hubei Wuhan430100,China;Changqing Oilfield Company,Shaanxi Xi’an 710000,China)
出处
《当代化工》
CAS
2019年第11期2618-2622,共5页
Contemporary Chemical Industry
基金
十三五国家重大专项,项目号:2016ZX05060-009.
关键词
双重介质
火山岩油藏
水平井
数值模拟
正交设计
灰色关联
Double medium
Volcanic reservoir
Horizontal well
Numerical simulation
Orthogonal design
Grey correlation
作者简介
阮迪(1994-),男,湖北黄冈人,在读研究生,2017年毕业于长江大学工程技术学院石油工程,研究方向:提高原油采收率。E-mail:15071389667@163.com;通讯作者:刘德华(1962-),男,博士生导师,博士,研究方向:油田开发规划与优化决策、油藏数值模拟、石油经济等。E-mail:Dh.liu@tom.com。
