低效井产能主控因素下的排采设备适应性分析  

Adaptability of the Production Equipment for Low-Efficiency CBM Wells Considering the Main Factors of the Productivity Control

作　　者：胡秋萍[1] 韩帅[2] 张芬娜[2] 宋云飞 石怀龙 琚宜文 綦耀光[2] Hu Qiuping;Han Shuai;Zhang Fenna;Song Yunfei;Shi Huailong;Ju Yiwen;Qi Yaoguang(Jincheng Branch,China United Coalbed Methane Co.,Ltd.;China University of Petroleum(Huadong;University of Chinese Academy of Sciences)

机构地区：[1]中联煤层气有限责任公司晋城分公司,山西省晋城市048000 [2]中国石油大学(华东) [3]中国科学院大学

出　　处：《石油机械》2020年第7期104-110,116,共8页China Petroleum Machinery

基　　金：国家科技重大专项“大型油气田及煤层气开发”(2017ZX05064)、“临兴-神府地区煤系地层气、致密气、页岩气合采示范工程”(2016ZX05066004);青年教师教改项目(QN201713)。

摘　　要：煤层气井在开发过程中具有连续、有效排采时间较短及维修作业频繁等特点,因此研究煤层气排采设备的适用性尤为重要。采用多层次模糊综合评价法,从资源条件、产出条件和开发条件等3个方面分析了煤层气低效井产能的主控因素,给出了排采设备的适用性评价。分析结果表明:采用多层次模糊评价方法可以得到影响煤层气井产能的5个指标,即含气量、埋深、渗透率、煤粉产出和排采速度;根据5个主要指标可以有针对性地开展煤层气排采制度和工艺的优化工作。针对煤粉产出和排采速度等两个重要因素,对煤层气排采常用的"三抽"设备、螺杆泵、电潜泵和射流泵等排采设备进行了适应性分析,所得结论可为煤层气低效井的排采设备选用提供指导。Coalbed methane(CBM)wells are shorter in continuous effective production time and are maintained frequently in the process of exploitation,so it is quite important to study the adaptability of CBM production equipment.In this paper,the analytical hierarchy process and fuzzy comprehensive evaluation(AHP+FCE)method was adopted to analyze the main factors controlling the productivity of low-efficiency CBM well from three aspects,i.e.,resource condition,output condition and development condition.Then,adaptability of the production equipment was evaluated.It is indicated by virtue of the AHP+FCE method that the productivity of CBM well is mainly affected by five indicators,including gas content,burial depth,permeability,pulverized coal output and production rate.The CBM production system and process can be optimized specifically according to these five main indicators.The adaptability of the commonly used CBM production equipment(e.g."rod-pumping"equipment,progressive cavity pump(PCP),electric submersible pump(ESP)and jet pump)is analyzed from the aspects of pulverized coal output and production rate.The analysis conclusions provide the technical reference for selecting the production equipment of low-efficiency CBM wells.

关 键 词：煤层气井 主控因素 排采设备 低效井 多层次模糊综合评价法 排采速度 

分 类 号：TE375[石油与天然气工程—油气田开发工程]