临兴区块煤层气井负压排采增压入干技术研究  

Research on Negative Pressure Production and Pressure Boosting Technology for Coalbed Methane Wells in Linxing Block

作　　者：王俊峰[1] 刘金海 王璐瑶 尚尊轩 余焱群[2] WANG Junfeng;LIU Jinhai;WANG Luyao;SHANG Zunxuan;YU Yanqun(Research Institute of Oil Production Services Company,CNOOC Energy Technology&Services,Tianjin 300450;School of Mechanical and Electronic Engineering,China University of Petroleum(East China),Shandong 266580)

机构地区：[1]中海油能源发展股份有限公司采油服务分公司研究院,天津300450 [2]中国石油大学(华东)机电工程学院,山东266580

出　　处：《中国煤层气》2024年第4期34-37,共4页China Coalbed Methane

摘　　要：针对临兴区块煤层气储层压力低、井场汇压高,气井产气无法入干的问题,提出了负压排采增压入干工艺措施。建立了空气干燥基、平衡水和饱和水煤样的解吸模型,得到煤层气负压解吸规律,设计了井场井组负压排采增压外输工艺流程方案,通过智能控制系统,根据井口压力传感器数值,动态调节气井产气外输路线;建立了负压排采时机选择模型,根据等温吸附实验数据,推算出临兴区块负压排采时机。To address the issues of low reservoir pressure and high collection pressure at the well site in the Linxing Block, which prevent coalbed wells from delivering gas to the main pipeline, a negative pressure production and pressure boosting process has been proposed. A desorption model for coal samples based on air drying, equilibrium water, and saturated water is established, revealing the negative pressure desorption patterns of coalbed methane. A process flow scheme for negative pressure production and pressure boosting for well groups at the well site has been designed, which uses an intelligent control system to dynamically adjust the gas export routes of the wells based on the readings of wellhead pressure sensors. A model for selecting the timing of negative pressure production has been established, and based on isothermal adsorption experimental data, the timing for negative pressure production in the LX Block has been determined.

关 键 词：煤层气开发 负压排采技术 增压输送 解吸模型 

分 类 号：TE375[石油与天然气工程—油气田开发工程]