西南油气分公司中江气田须家河组气藏产能差异大、气水关系复杂，为保障气藏稳产上产，该公司积极开展气藏气水分布、防水治水、气井腐蚀等系列研究，截至3月27日，须家河组气藏投产以来累计生产天然气逾20亿立方米。须家河组气藏现有生产井30口，日产气量161万立方米，是中江气田主力气藏之一。该气藏水体分布规律复杂，气井受产水影响生产效益差异较大。为解决二氧化碳腐蚀、水侵难题，技术团队加快含水气藏效益开发系列技术研究，推进“防水、控水、治水、堵水”技术储备及工艺实验，深化气水动态分布规律研究，动态优化气井配产，并开展气井排水采气、分层堵水等工艺实验，以延长气井稳产时间，提高气藏最终采收率。

该公司加强须家河组气井腐蚀监测及防治，开展腐蚀机理研究，系统评价腐蚀风险，明确气井腐蚀规律及主控因素，统筹用好车注、泵注、二次完井等作业，做实日常腐蚀指标监测及防腐工作，提升井筒及地面集输系统安全强度，有效降低产量损失，保障天然气持续稳定供应。

The Xujiahe Formation gas reservoir of Zhongjiang Gas Field of Southwest Oil and Gas Company has a large production capacity difference and a complex gas-water relationship. In order to ensure the stable production and production of the gas reservoir, the company has actively carried out a series of studies on gas and water distribution, water waterproofing and control, and gas well corrosion, etc. As of March 27, the cumulative gas production of Xujiahe Formation gas reservoir has exceeded 2 billion cubic meters since its operation.

Xujiahe gas reservoir is one of the main gas reservoirs in Zhongjiang Gas field with 30 production Wells and 1.61 million cubic meters of gas per day. The water distribution law of the gas reservoir is complicated, and the production efficiency of the gas well is greatly different under the influence of production water. In order to solve the problems of carbon dioxide corrosion and water intrusion, the technical team accelerated the technical research on the benefit development series of water-bearing gas reservoirs, promoted the technical reserve and process experiments of "waterproof, water control, water control and water blocking", deepened the research on the dynamic distribution law of gas and water, dynamically optimized gas well production allocation, and carried out gas well drainage and gas recovery, stratified water blocking and other process experiments to extend the stable production time of gas Wells. Improve ultimate gas reservoir recovery.

The company strengthened the monitoring and prevention of gas well corrosion in Xujiahe Formation, carried out corrosion mechanism research, systematically eva luated corrosion risk, clarified the law of gas well corrosion and main control factors, coordinated the use of truck injection, pump injection, secondary completion and other operations, carried out daily corrosion index monitoring and anti-corrosion work, improved the safety strength of wellbore and surface gathering system, and effectively reduced production loss. We will ensure a steady supply of natural gas.