辽河东部凸起上古生界页岩含气性分析

Gas-bearing property analysis on Upper Paleozoic shale in eastern Uplift of Liaohe Basin

葛明娜 2 张金川 2 李晓光³ 唐玄 2 扬升宇 2

中国地质大学（北京）海相储层演化与油气富集机理教育部重点实验室，北京 100831 中国地质大学（北京）能源学院，北京 100831 中国石油辽河油田公司勘探开发研究院，辽宁 盘锦　124010

MOE Key Laboratory of Marine Reservoir Evaluation and Hydrocarbon Accumulation Mechanism, China University of Geosciences, Beijing 100083, China School of Energy Resources, China University of Geosciences, Beijing 100083, China Research Institute of Exploration and Development, Liaohe Oilfield Company, PetroChina, Panjin 124010, China

通过分析地质资料和泥页岩样品的实验数据，初步认为辽河东部凸起上古生界存在发育页岩气的条件。页岩气是以吸附气和游离气为主的天然气聚集，而含气量是直接评价页岩含气性的重要参数。以分析吸附气和游离气的影响因素为主线，从泥页岩分布、有机地球化学特征和储集物性等影响页岩含气性的主控因素以及生气能力、含气量等方面，对上古生界太原组、山西组页岩含气性进行了系统的分析评价。东部凸起上古生界为海陆过渡相沉积，暗色泥页岩发育，有机质丰度高，主体进入高成熟—过成熟演化阶段，以Ⅲ型干酪根为主，储集物性较好，生气能力大，含气量高，为1.28~4.62 m3/t，综合评价辽河东部凸起上古生界页岩含气性好，是页岩气勘探的潜力层系。

Through analyzing the geological statistics and experimental data of shale samples, it is considered that shale gas can develop in Upper Paleozoic reservoir in eastern Uplift. Shale gas is a gas-gathering body which mainly includes absorbed gas and free gas. The gas content is an important parameter to evaluate the shale gas directly. The gas-bearing properties of Upper Paleozoic Taiyuan and Shanxi Formations shale gas are systematically analyzed based on the shale distribution, organic geochemical characteristics, physical properties, gas generation capability and gas-bearing content. Upper Paleozoic shale in eastern Uplift is transitional facies with rich dark shale, high organic matter abundance and evolution degree, mainly producing Ⅲ Kerogen. The physical property of reservoir is good, gas generation capability is strong and gas content is about 1.28-4.62 m3/t. Comprehensive evaluation shows that the gas-bearing properties of Upper Paleozoic shale in eastern Uplift is good, which is the potential formation for shale gas exploration.

10.6056/dkyqt201206010