文章基本信息

标题：RESEARCH AND APPLICATION OFLINEAR CALCULATION METHOD FOR OILAND WATER WELL CONNECTION
本地全文：下载
作者：Weiwei He ; Qian Wang ; Jianya Pei 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2020
卷号：29
期号：9
页码：7819-7825
语种：English
出版社：PSP Publishing
摘要：The phenomenon of inefficient or invalid circulation in old oilfields is serious in the late stage of waterflooding development, so it is urgent to accurately assess the connectivity between o il and water wells. Some past analysis methods, such as qualitative analysis of superior water injection channels or methods that only consider the static connectivity of o il and water wells, have been unable to meet the needs of o ilfie ld development. In this paper, based on the big data statistical method and the current development status of the old o il field, we assume that there is a staged injection-production balance in the o il field development process, and then use the dynamic production data of water injection development in recent years to establish a linear o il and water w ell connectivity calculation model. The contribution coefficients of water injection wells and water injection wells to the connected production wells are solved. Furthermore, we put forward three analysis methods to analyze the contribution of the produced wells, the contribution of the injection w ell interval, and divide the connectivity between the wells, and then analyze their application value. The results show that the method can be used to calculate the contribution of different injection intervals of a single injection well. The calculation results are consistent w ith the stratified test results, so the reliability of the method is verified. We have designed and im plemented measure wells and adjustment wells in Block A, which have good development effects and also verify the effectiveness of this method. The application of this method can objectively reflect the water injection situation of the water injection w ell and the effectiveness of the production well. Moreover, the calculation results can improve the design efficiency and effectiveness of the water injection adjustment scheme. This method can quickly and quantitatively calculate the connection relationship between o il and water wells, and can provide scientific guidance for the dynamic analysis of oilfie ld development.
关键词：Oilfield water injection development;connectivity;injection-production balance;linear programming;quantitative description