同心双管分注井同位素吸水剖面测试技术研究
Research on Isotope Water Injection Profile Testing Technology for Concentric Double Pipe Split Injection Wells
王鹏 1张佳磊 1张雷 1孙文博 1马勇1
作者信息
- 1. 长庆油田分公司第三采油厂,宁夏银川 750006
- 折叠
摘要
三叠系长6油藏一般为分注合采开发、层间矛盾突出,但前期采用桥式同心等常规分注方式,受限于遇阻遇卡现象普遍、成功率低,难以满足油藏精细分层注水配水的需要.为解决这一问题,2015年推广同心双管分注技术,取得了良好的分注效果.但该技术目前仍无法有效测试吸水剖面,不能及时了解层内的吸水状况,有效指导注水技术政策调整和措施制定,层内矛盾加剧,油藏稳产形势变差.结合同心双管分注的管柱结构和吸水剖面测试原理,开展吸水剖面测试技术研究,巧妙地利用了Y341可洗井封隔器洗井通道双向开启的机理,完成了吸水剖面测试作业;从测试结果和注水调整效果来看,测试结果能有效反映各层层内的吸水状况,该测试方法具有一定的推广意义.
Abstract
The Triassic Chang6 oil reservoir is generally developed through separate injection and combined production,with prominent interlayer contradictions.However,in the early stage,conventional separate injection methods such as bridge concentric were used,which were limited by the common phenomenon of encountering obstacles and low success rates,making it difficult to meet the needs of fine layered water injection and distribution in the reservoir.To address this issue,the concentric dual tube injection separation technology was promoted in 2015 and achieved good injection separation results.However,this technology is still unable to effectively test the water absorption profile,timely understand the water absorption status within the layer,effectively guide the adjustment of water injection technology policies and measures,exacerbate the contradictions within the layer,and worsen the stable production situation of the reservoir.This article combines the structure of concentric dual pipe injection and the principle of water absorption profile testing to conduct research on water absorption profile testing technology.It cleverly utilizes the mechanism of bidirectional opening of the Y341 washable well packer washing channel to complete the water absorption profile testing operation;From the test results and water injection adjustment effect,it can be seen that the test results can effectively reflect the water absorption status within each layer,and this test method has certain promotion significance.
关键词
同心双管分注/吸水剖面/同位素/分层注水Key words
concentric dual pipe injection/water injection profile/isotopes/layered water injection引用本文复制引用
出版年
2024
NETL
NSTL
万方数据