摘要
为了证实山西省柳林县杨家坪煤层气试验区煤层气勘探开发潜力,对该区主要煤层的重要储集层物性参数(煤层割理、孔隙度、渗透率)进行观测和实验分析,对比实验与生产数据,并对影响煤层气开发潜力的重要参数(煤层含气量、含气饱和度、吸附与解吸时间)进行实验研究。结果表明:该区煤层气储集层以基质孔隙为主,煤层渗透率变化比较大,主要煤层渗透率偏低;但煤层割理较发育,割理主导方位受区域构造控制,以不规则网状为主,大部分处于开启状态,渗透能力较好。该区主要煤层的含气量都较高,接近于饱和含气,所以勘探潜力较好;由于解吸时间短,故具有良好的开采条件。煤层气井的生产状况也证实了其较为巨大的开发潜力。
In order to confirm the exploration and development potential of combed gas in the Yangjiaping experimental area, Liulin, this paper studies the important reservoir characteristics of the main coal beds in the area, such as combed cleat, porosity and permeability, and the important production parameters, including gas content, gas saturation, and adsorption/ desorption time by observation, experiment, and production data analysis. The combed gas reservoirs consist mainly of matrix pores. The coalbed permeability varies greatly and the main coalbeds usually have lower permeability. The coalbeds have developed irregular reticulated cleats. The cleats are dominated by regional structures and most of them are open, and thus having good permeability. The coalbeds have a higher gas content （nearly saturated） and good exploration potential. The coal had a short desorption time, showing favorable exploitation conditions. The production data of combed gas wells also confirms the excellent exploitation potential of the area.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2007年第5期548-556,共9页
Petroleum Exploration and Development
基金
山西省自然科学基金项目(20021077)
关键词
煤层气
柳林
储集层物性
含气量
勘探开发
coalbed gas
Liulin
physical property of reservoirs
gas content
exploration and development
