三交区块煤层气井产液规律及排采强度  

Water production law and drainage strength of coalbed methane well in sanjiao block

作　　者：刘升贵[1] 王振彪[1] 秦利峰[2] 陈含[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]华北油田山西煤层气勘探开发分公司,山西晋城048000

出　　处：《辽宁工程技术大学学报（自然科学版）》2014年第1期1-4,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家科技重大专项基金资助项目(2011ZX05038-001);中央高校基本科研业务费专项基金资助项目(2009QL09)

摘　　要：为确定鄂尔多斯盆地三交区块煤层气合理的排采强度,采用理论分析、现场实测的方法,研究三交区块煤层气井产液规律,提出三交区块煤层气井排采强度计算方法.研究结果表明:渗透率直接影响煤储层供液能力,压降传递速度在单相水阶段显著快于气、液两相阶段;地层供液能力与渗透率、降压幅度、煤厚、含水饱和度之间存在正相关关系;计算得出三交区块直井、水平井在单相水产出阶段的合理排水量;随含水饱和度减小,应该相应降低排采强度.该成果对煤层气排采具有一定的参考价值和指导意义.Abstract：In order to determine the proper drainage strength of Sanjiao block in Ordos Basin, the methods of theoretical analysis and field measurement are utilized to research water production rule of CBM wells of Sanjiao block, and the drainage strength calculation method of Sanjiao block is proposed. The results of study show that the permeability influence the water production capacity of coal reservoir directly,the pressure drop transfer speed of single-phase water phase is apparently faster than that of gas-fluid phase. There are positive relationships between water production capacity of coal formation and permeability, pressure drop range, coal seam thickness and water saturation.Single-phase water phase reasonable drainage of vertical and horizontal well of Sanjiao block is calculated. The drainage strength should be reduced with the decrease of water saturation. This achievement provides certain reference and guiding to the CBM drainage.

关 键 词：渗透率 产气曲线 产水量 含水饱和度 储层压力 煤层厚度 水平井 煤储层 

分 类 号：TE33[石油与天然气工程—油气田开发工程]