河南温县区块太原组—山西组页岩气成藏条件及勘探方向研究  

Study on the Accumulation Conditions and Exploration Targets of Shale Gas of Taiyuan and Shanxi Formations in Wenxian Block,Henan Province

作　　者：邱庆伦[1,2] 李中明 刘冲[1,2] 刘艳杰 朱德胜[1,2] 张栋 瓮纪昌[1,3,2] 

机构地区：[1]河南省地质调查院,河南郑州450001 [2]地下清洁能源勘查开发产业技术创新战略联盟,河南郑州450001 [3]河南豫矿地质勘查投资有限公司,河南郑州450012

出　　处：《非常规油气》2018年第1期11-19,共9页Unconventional Oil & Gas

基　　金：河南省重大科技专项"河南页岩气勘查开发及示范应用研究"(151100311000);国土资源部第二轮页岩气探矿权项目"河南温县页岩气勘查"(GT2012YQTKQCR0019)联合资助

摘　　要：利用河南温县区块郑西页1井海陆过渡相太原组和山西组页岩气层系地质及地球化学分析资料,采用地质、无机地球化学及有机地球化学综合分析的方法,对该井进行地质评价,并给出河南温县区块页岩气勘探方向。研究表明,太原组和山西组富有机质页岩厚度分别为54m和63m,有机质类型均为Ⅲ型,有机碳平均含量分别为1.79%和1.70%,有效孔隙度分别为1.2%和2.3%,现场解吸平均含气量分别为1.39m^3/t和1.32m^3/t,有机质成熟度Ro值在4.1%~4.5%之间;黏土矿物以伊利石和伊蒙混层为主。综合研究认为,温县区块页岩气层系具有普遍含气、埋深大、构造复杂的特征;在页岩气层系厚度、埋深及盖层条件相似的情况下,寻找构造相对稳定、保存条件较好的地区进行页岩气、致密砂岩气兼探,是下一步勘探选区的关键。Based on the geologic and geochemical data of Taiyuan formation and Shanxi formation organic-rich shale in well Zhengxiye-1,Henan Wenxian block,we founded geologic evaluation on well Zhengxiye-1,and pointed out exploration targets on shale gas of Taiyuan and Shanxi formations in Wenxian block,Henan by using integrated analyses of geologic and inorganic geochemical method as well as organic geochemical method.Indicated by analyzing geological characteristics of marine-continental transitional facies on Taiyuan formation and Shanxi formation shale gas,the organic-rich shale thickness of Taiyuan formation and Shanxi formation was respective of 54 m and 63 m,and organic matter type belonged to type Ⅲ,the average content of TOC amount to 1.79% and 1.7%respectively,and the effective porosity was 1.2% and 2.3%,the gas content was about 1.39 and 1.32 cubic meters per ton,and the values of the Ro,organic matter maturity was between 3.1% and 4.5%.Clay minerals were mainly illite and mixed-layer illite/smectite minerals.Integrative researches indicated that the shales of Taiyuan and Shanxi formations had characteristics of universal shale-gassiness and big deepness,as well as complicated structure.Under the conditions of similar thickness,burying deepness and seals of shale gas layers,it was the key for shale gas exploration and evaluation by looking for comparatively steady tectonic areas which have preferable preservation conditions and could explore shale gas and tight gas at the same time.

关 键 词：温县区块 页岩气 太原组 山西组 勘探前景 有利区 

分 类 号：TE122[石油与天然气工程—油气勘探]