黄骅坳陷地温场控制因素与地热资源潜力  

Controlling factors of geothermal field and potential of geothermal resources in Huanghua Depression

作　　者：汪晓敏 邵徽发 王永凯 周凤春[3] 高莉津 WANG Xiaomin;SHAO Huifa;WANG Yongkai;ZHOU Fengchun;GAO Lijin(Information Office of Science and Technology of PetroChina Dagang Oilfield Company, Tianjin 300280,China;Resource Evaluation Office of PetroChina Dagang Oilfield Company, Tianjin 300280,China;Research Institute of Exploration and Development of PetroChina Dagang Oilfield Company, Tianjin 300280,China;New Project Division of PetroChina Dagang Oilfield Company, Tianjin 300280,China)

机构地区：[1]中国石油大港油田分公司科技信息处,天津300280 [2]中国石油大港油田公司资源评价处,天津300280 [3]中国石油大港油田分公司勘探开发研究院,天津300280 [4]中国石油大港油田分公司新项目事业部,天津300280

出　　处：《录井工程》2020年第S01期125-129,共5页Mud Logging Engineering

摘　　要：黄骅坳陷地温梯度适中,中浅层发育多个热异常区,具备形成地热田的有利条件。为了解古近系和新近系热储基本特征,利用研究区油气井钻探获得的大量分析测试资料,分析黄骅坳陷地热场基本特征与控制因素,落实地热资源潜力及有利目标区域。研究表明,黄骅坳陷深部结构从东向西具有规律性变化,它与燕山期以来的构造活动有直接关系,一方面地幔隆起地壳减薄,莫霍面抬升,另一方面由于地壳的沉降,断陷形成巨厚的中-新生代碎屑沉积。深部地壳结构和基底结构对地温场分布起着主要的控制作用,并形成黄骅坳陷南北分区、隆高凹低的地温场分布特征。利用热储法计算大港探区范围内地热资源为1664×1018 J,主要分布在明化镇组、馆陶组,探区北部沧县隆起区、北塘凹陷、歧口凹陷地热丰度高,是地热资源开发利用的主要区域。Huanghua Depression has a moderate geothermal gradient,and multiple thermal anomalies developed in the middle and shallow layers,which are favorable conditions for the formation of geothermal field.In order to understand the basic characteristics of the geothermal reservoirs of Paleogene and Neogene,a large number of analysis and test data obtained from oil and gas well drilling in the study area are used to analyze the basic characteristics and control factors of the geothermal field in Huanghua Depression,and to implement the geothermal resources potential and favorable regional target.It shows that the deep structure of Huanghua Depression changes regularly from east to west,which is directly related to the tectonic activities since Yanshanian period.On the one hand,the mantle bulges,the crust thins,and the Moho surface rises;on the other had,the fault depression has formed thick Meso-Cenozoic clastic deposit due to the crust subsidence.The deep crustal structure and basement structure are major controlling factors of geothermal field distribution to form the distribution characteristics of southern and northern division,and high upheaval and low depression in Huanghua Depression.The geothermal resources within Dagang exploration area are calculated to be 1664×1018 J using thermal reserve method,mainly distributed in Minghuazhen Formation and Guantao Formation.Geothermal abundance is high in Cangxian uplift,Beitang Sag and Qikou Sag in the northern part of the exploration area,which are the main areas for the development and utilization of geothermal resources.

关 键 词：中地温梯度区 地热场 地热资源 地球化学 地热成因 黄骅坳陷 

分 类 号：TE132.1[石油与天然气工程—油气勘探]