老厂矿区雨汪区块地温-地压系统及其展布特征  

Geotemperature-geopressure system and its distribution characteristics of Yuwang block in Laochang mining area

作　　者：蒋秀明[1,2] 吴财芳 张二超[1,2] 张莎莎 JIANG Xiuming;WU Caifang;ZHANG Erchao;ZHANG SHasha(School of Resources and Earth Science,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China;Ministry of Education Key Lab of Coalbed Methane Resources and Reservoir Formation Process,Xuzhou 221116,Jiangsu,China)

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116 [2]煤层气资源与成藏过程教育部重点实验室,江苏徐州221116

出　　处：《河南理工大学学报（自然科学版）》2020年第2期32-37,共6页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家科技重大专项项目(2016ZX05044-001);国家自然科学基金资助项目(41872170,41572140);江苏省青蓝工程项目

摘　　要：地层温度和压力是地底能量系统的主要构成要素,为了查清雨汪区块地层温度和储层压力的分布情况以及影响因素,本文从老厂矿区雨汪区块的地温和地温梯度特征出发,结合储层压力和地应力的平面及垂向上的分布情况,以及与地质构造形迹的耦合情况,分析研究区的储层地温-地压系统特征。结果表明:研究区的地温场呈现南北分异特征,南部地温梯度>4℃/100 m,而北部为2~2.5℃/100 m,推测这可能与大型断层分布有关;雨汪区块属于中等-较高地应力区,造成煤系地层具有较高的储层压力,储层压力约在750 m深度处出现突然增加,推测可能与深部发育有较好的分隔层有关。综合分析认为,雨汪区块储层地温-地压系统的区域分布特征是地层、构造、水文等多种因素耦合的结果。The geotemperature and geopressure are the main components of the underground energy system.In order to find out the distribution and influencing factors of the geotemperature and geopressure of the Yuwang block in Laochang mining area,the characteristics of the geotemperature-geopressure system in the study area were analyzed with the horizontal and vertical distribution of reservoir pressure and geostress and the coupling with geological structure trace from a standpoint of the geothermal and geothermal gradient characteristics of Yuwang block.It was found that the geothermal field in the study area was characterized of north-south differentiation.The geothermal gradient in the south was higher than 4℃/100 m,while that in the north was about 2~2.5℃/100 m,which might be related to the distribution of large faults.The Yuwang block belonged to the medium-high geostress area,which caused higher reservoir pressure in the coal measure strata.The reservoir pressure suddenly increased at a depth of about 750 m,which probably related to the development of a better separation layer in the deep.In conclusion,the regional distribution characteristics of the reservoir temperature and pressure system in the Yuwang block were the coupling results of various factors such as stratum,structure and hydrology.

关 键 词：老厂矿区雨汪区块 地温 地温梯度 储层压力 地温-地压系统 

分 类 号：TE112[石油与天然气工程—油气勘探]