摘要
以某实际油藏地质特征、开发动态为基础,采用油藏工程法,从水平段长度、水平段纵向位置、油层厚度、裂缝水平垂直渗透率比等参数出发,对影响水平井开发效果的各参数进行研究,发现当考虑井筒摩阻时,水平井产量的增幅随水平段长度的增加而减小。最优水平段长度为1500m。在相同条件下当无因次避水高度为0.9时,水平井开发效果最好。当上产压差相同时,随着油层厚度的增加,水平井的产量不断增加,当油层厚度达到40m时,水平井产量随油层厚度的增加幅度变得平缓。并利用正交设计确定各影响参数的主次顺序为:工作制度>水平段长度>油层厚度>避水高度>裂缝垂直水平渗透率比。
Based on the geological characteristics and development dynamics of an actual reservoir,the reservoir engineering method was used to study various parameters affecting the development effect of horizontal well from the aspects of the length of the horizontal section,the longitudinal position of the horizontal section,the thickness of the oil layer,and the vertical permeability ratio of the fracture.It was found that,when the wellbore friction was considered,the increasing value of horizontal well production decreased with the increase of the length of the horizontal section.The optimal horizontal section length was 1500 m.Under the same conditions,when the dimensionless water avoidance height was 0.9,the development effect of the horizontal well was the best.When the pressure difference was the same,the production of horizontal well increased with the increase of oil layer thickness.When the oil layer thickness reached 40 m,the increase of horizontal well production became gentle with the increase of oil layer thickness.And the orthogonal design was used to determine the primary and secondary order of every influencing parameters:working system>horizontal section length>oil layer thickness>water avoidance height>crack vertical horizontal permeability ratio.
作者
沈畅
阮迪
欧阳传湘
SHENG Chang;RUAN Di;OUYANG Chuan-xiang(School of Petroleum Engineering,Yangtze University,Hubei Wuhan 430100,China)
出处
《当代化工》
CAS
2020年第2期437-440,共4页
Contemporary Chemical Industry
基金
国家自然科学基金项目“高温高压CO2-原油-地层水三相相平衡溶解度规律”(编号:51404037)
中国石油科技创新基金研究项目:页岩超临界CO2压裂裂缝扩展机理研究(2017D-5007-0311).
关键词
水平井
底水
油藏工程
正交设计
Horizontal well
Bottom wate
Reservoir engineering
Orthogonal design
作者简介
沈畅(1994-),女,河北唐山人,研究生,研究方向:油气田开发。E-mail:17354326462@163.com;通讯作者:欧阳传湘(1964-),男,教授,博士,研究方向。油气田开发方向。E-mail:958388159@qq.com。
