车镇凹陷大王庄地区沙四段H_(2)S成因机理及富集规律  

Formation mechanism and enrichment patterns of H2S in Es4 of Dawangzhuang area,Chezhen Sag

作　　者：韩带 董春梅[1,2,3] 马鹏杰 林承焰[1,2,3] 包长甲 李晓庆 HAN Dai;DONG Chunmei;MA Pengjie;LIN Chengyan;BAO Changjia;LI Xiaoqing(National Key Laboratory of Deep Oil and Gas,China University of Petroleum(East China),Qingdao 266580,China;Key Laboratory of Reservoir Geology of Shandong Province,China University of Petroleum(East China),Qingdao 266580,China;School of Geosciences,China University of Petroleum(East China),Qingdao 266580,China;Sanya Offshore Oil&Gas Research Institute,Northeast Petroleum University,Sanya 572025,China;Hekou Oil Production Plant,Shengli Oilfield Company,SINOPEC,Dongying 257299,China)

机构地区：[1]中国石油大学(华东)深层油气全国重点实验室,山东青岛266580 [2]中国石油大学(华东)山东省油藏地质重点实验室,山东青岛266580 [3]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [4]东北石油大学三亚海洋油气研究院,海南三亚572025 [5]中国石化胜利油田分公司河口采油厂,山东东营257299

出　　处：《断块油气田》2025年第2期227-233,共7页Fault-Block Oil & Gas Field

基　　金：国家自然基金面上项目“湖相富有机质泥页岩中白云岩成因机制及其演化模式”(41972142);国家科技重大专项课题“低渗-致密油藏描述新方法与开发模式”(2017ZX05009-001)。

摘　　要：硫化氢(H2S)是一种与油气伴生的有毒气体,严重影响着油气安全生产和有效开采,因此有效评估H2S的成因及分布具有重要意义。车镇凹陷大王庄地区沙四段(Es4)湖相碳酸盐岩中发现了高含H2S油气藏。为明确该区H2S的形成机理和富集规律,文中综合分析了天然气与地层水地球化学特征、储层固体沥青元素特征以及膏盐岩、原油、干酪根硫同位素特征,认为大王庄北部深洼带热化学硫酸盐还原作用(TSR),是该区油气藏中H2S来源的主要成因。馆陶组成藏期及之后的继承性断层活动,导致沙四段碳酸盐岩储层中H2S大量富集。该认识将为今后大王庄地区富硫油气藏的开发及规避H2S风险提供借鉴意义。Hydrogen sulfide(H2S)is a harmful gas associated with oil and gas,which seriously affects the safe production and effective exploitation of oil and gas.Therefore,it is of great significance to effectively evaluate the origin and distribution of H2S.Oil and gas reservoirs with high H2S content were found in lacustrine carbonate rocks of Es4,Dawangzhuang area,Chezhen Sag.In order to clarify the formation mechanism and enrichment patterns of H2S in this area,the geochemical characteristics of natural gas and formation water,the element characteristics of reservoir solid bituminous and the sulfur isotope characteristics of gypsum-salt rocks,crude oil and kerogen are analyzed comprehensively.It is concluded that the thermochemical sulfate reduction(TSR)in the deep depression zone in northern Dawangzhuang is the main source of H2S in oil and gas reservoirs in this area.Successor fault activities during and after Guantao Formation accumulation period led to a large amount of H2S enrichment in the carbonate reservoirs of Es4.This understanding will provide reference for the future development of sulfur-rich oil and gas reservoirs and the avoidance of high-yield H2S risk in Dawangzhuang area.

关 键 词：H2S 热化学硫酸盐还原反应 成因机理 富集规律 车镇凹陷 

分 类 号：TE133[石油与天然气工程—油气勘探]