黔西南晴页2井旧司组页岩特征及勘探意义  

Shale Characteristics and Prospecting Significance of Jiusi Formation for Qingye 2 Well, SW Guizhou Province

作　　者：张本杰[1] 秦琴[1] 刘甲[1,2] 张伟[1,2] 罗沙[1] 

机构地区：[1]贵州煤矿地质工程咨询与地质环境监测中心,贵州贵阳550081 [2]贵州能矿织金磷化工有限公司,贵州贵阳550003

出　　处：《天然气技术与经济》2016年第4期19-22,81-82,共4页Natural Gas Technology and Economy

基　　金：贵州省地勘基金重大专项"贵州省页岩气资源调查评价(2012GYYQ)"项目之子项目"黔西南地区页岩气资源调查评价(2012GYYQ-04)"资助

摘　　要：通过晴页2井旧司组页岩岩心样品测试,结合地质录井资料,对页岩气储层特征及开采有利的重要因素进行了分析研究。揭示了旧司组页岩具有效厚度较大、泥地比高(81.43%)、有机质含量较高、脆性矿物含量高(平均为48.69%)、纳米孔及微裂缝较发育、生烃能力较强等特点;随深度增加,有机碳含量、含气量具增大趋势,含气性与有机碳含量呈正相关性;据页岩气赋存及环境条件优选出有利区预测地质资源量为7 885×108m3,可采资源量为1 419.3×108m3,勘探开发前景广阔。分析认为:海相页岩是页岩气勘探开发的重要层系,富含脆性矿物的有机质页岩是良好的勘探开发目标。Based on core analysis and geological mud-logging data, a study on shale- gas reservoir characteristics and favorable exploitation factors was implemented for shale samples from Jiusi Formation in Qingye 2 well. Results show that the shale reservoir is characterized by larger effective thickness, high ratio of mud and strata(81.43 %), high content of organic matter, high content of brittle minera(l48.69 % on average), more developed nanopore and microfracture, and strong hydrocarbon- generating capability; both organic-carbon and gas-bearing content is prone to enlarge along with an increase of burial depth, and gas-bearing property and organic-carbon content appear a positive correlation. According to a prediction of favorable blocks, shale-gas exploration and production has a bight prospect with geological and recoverable resources of 7 885×108m3and 1 419.3×108m3, respectively. In addition, it is deemed that the marine shale especially with brittle mineral should be an important exploration target.

关 键 词：页岩 脆性矿物 纳米孔和微裂缝 勘探意义 旧司组 

分 类 号：P618.13[天文地球—矿床学]