川东北高酸性气藏固井技术——以坝南001-H1井为例  

Cementing Technology of High Acid Gas Reservoir in Northeast Sichuan Basin: A Case Study of Ba’nan 001-H1 Well

作　　者：王纯全 黄伟 刘世彬 宋勇[3] 严海兵 张杨[3] 赵启阳 WANG Chunquan;HUANG Wei;LIU Shibin;SONG Yong;YAN Haibing;ZHANG Yang;ZHAO Qiyang(Downhole Service Company,CNPC Chuanqing Drilling Engineering Company Ltd,Chengdu 610051,China;National Research and Development Center of High Sulfur Gas Reservoirs,Chengdu 610051,China;Northeast Sichuan Gas District of PetroChina Southwest Oil and Gas Field Company,Dazhou Sichuan 635000,China)

机构地区：[1]中国石油川庆钻探工程有限公司井下作业公司,成都610051 [2]国家能源高含硫气藏开采研发中心,成都610051 [3]中石油西南油气田公司川东北气矿,四川达州635000

出　　处：《重庆科技学院学报（自然科学版）》2022年第1期1-6,共6页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：中国石油川庆钻探公司科研项目“川东北高含硫气藏固井配套技术及防腐蚀水泥浆研究”(CQ2021B-46-Z3-3)。

摘　　要：为解决川东北高酸性气藏目前存在的低压易漏失,低密度水泥浆强度低,H_(2)S与CO_(2)混合的高酸性气体对硅酸盐水泥腐蚀大等难题,以坝南001-H1井为例进行固井技术攻关,运用紧密堆积理论提高堆积率,优选减轻剂与增强剂,设计一套高强度低密度水泥浆体系。提高固相和胶乳颗粒的含量以降低水泥石的渗透率和水泥腐蚀程度,形成防腐性能良好的水泥浆体系。采取了一系列措施,如注入高强度低密度水泥浆、注入防腐水泥浆、提高承压能力、预应力固井、控压固井工艺等,为坝南001-H1井固井作业顺利实现提供了技术支持。应用结果显示,采用该体系后,技术套管固井作业合格率达到95.95%,尾管固井质量合格率达到81.36%,效果良好。To solve the low pressure leakage, low strength of low density cement slurry and big corrosion of high acid gas reservoir with H_(2)S and CO_(2)on the Portland cement in the high acid gas reservoir in northeast Sichuan basin, well Ba’nan 001-H1 is taken as an example to tackle key problems in cementing technology. The high strength and low density cement slurry system has been put forward, through improving accumulation rate with the theory of high packing, optimizing reducing agent and reinforcing agent. The anti-corrosion cement slurry system has been put forward by increasing solid content and latex particles to reduce cement permeability and cement corrosion. A series of measures such as the high strength and low density cement slurry, the anti-corrosion cement slurry, pre-stressed cementing slurry, increasing the bearing capacity, and managed pressure cementing are taken to provide the technical support in the intermediate casing and liner cementing of Ba’nan 001-H1 well. The application results show that the qualified rate of casing cementing is 95.95%, and the qualified rate of liner cementing is 81.36%, which meets good effect.

关 键 词：固井 高酸性气藏 防腐水泥浆 低密度水泥浆 

分 类 号：TE254[石油与天然气工程—油气井工程]