摘要
为查明新疆乌鲁木齐矿区煤层气井产能影响因素与产气能力,基于现场测试、测井、生产数据,通过测井拟合与产能动态预测,研究乌鲁木齐矿区煤层气产能影响因素与分布特征。结果表明:研究区煤储层兰氏体积、兰氏压力、含气量呈现出中部稍大、东北与西南两侧稍小、区域分布差异不大的趋势,临储比呈现出北部大、南部较小的趋势;孔隙度、渗透率呈现出中部稍小,南北两侧稍大,分布差异较小的趋势;研究区煤层气井产能北部最大、中部较小、区域差异小,平均在629万m^(3)左右,产能与临储比、含气量、孔隙度等参数的分布特征较吻合。
To find out the influencing factors and gas production capacity of coalbed methane wells in the Urumqi Mining Area of Xinjiang, the influencing factors and distribution characteristics are studied through logging fitting and productivity dynamic prediction based on the data of field test, logging and production. The results show that: The Langmuir volume, Langmuir pressure and gas content of coal reservoirs in the study area show a trend of slightly larger in the middle, and slightly smaller in the northeast and southwest with a limited difference in regional distribution. The ratio of critical desorption pressure to reservoir pressure is larger in the north and smaller in the south. The porosity and permeability are slightly smaller in the middle, slightly larger in the north and south, and the distribution difference is small. The productivity of coalbed methane wells in the study area is the largest in the north and smaller in the middle, but the difference is small, and the average productivity is about 6.29 million m^(3). The productivity results are consistent with the distribution characteristics of the ratio of critical desorption pressure to reservoir pressure, gas content, porosity, and other parameters.
作者
俞浩
YU Hao(Xinjiang Coalfield Geology Bureau,Xinjiang 830009)
出处
《中国煤层气》
2022年第2期3-7,共5页
China Coalbed Methane
基金
新疆维吾尔自治区自然科学基金项目《新疆煤层气开发成本和效益分析研究》(2020D01A96)。
关键词
乌鲁木齐矿区
煤层气
测井评价
产气预测
Urumqi Mining area
coalbed methane
logging evaluation
production prediction
