准噶尔盆地腹部征沙村地区征10井的勘探发现与启示  

Exploration discoveries and implications of well Zheng 10 in the Zhengshacun area of the Junggar Basin

作　　者：刘惠民[1] 张关龙[2,3] 范婕 曾治平[2,3] 郭瑞超 宫亚军[2] LIU Huimin;ZHANG Guanlong;FAN Jie;ZENG Zhiping;GUO Ruichao;GONG Yajun(Shengli Oilfield Branch Company,SINOPEC,Dongying,Shandong 257015,China;Exploration and Development Research Institute,Shengli Oilfield Branch Company,SINOPEC,Dongying,Shandong 257015,China;Postdoctoral Scientific Research Working Station of Shengli Oilfield,SINOPEC,Dongying,Shandong 257015,China)

机构地区：[1]中国石化胜利油田分公司,山东东营257015 [2]中国石化胜利油田分公司勘探开发研究院,山东东营257015 [3]中国石化胜利石油管理局博士后科研工作站,山东东营257015

出　　处：《石油与天然气地质》2023年第5期1118-1128,共11页Oil & Gas Geology

基　　金：中国石油化工股份有限公司科技攻关项目(P22128);中国石化胜利油田分公司项目(YKK2303)。

摘　　要：油气勘探领域向深层-超深层拓展对准噶尔盆地增储上产具有重要的战略意义。准噶尔盆地腹部征沙村地区征10井的成功钻探,揭示了准中地区超深层巨大的勘探潜力。以征沙村地区为例,从油气藏特征入手,在分析源岩、储层和输导条件等成藏要素特征的基础上,明确油气成藏主控因素,建立成藏模式,并指出其深层-超深层油气勘探的新启示。研究结果表明,征沙村地区油气成藏主控因素包括3个方面:①低温-超压控烃机制延长了生油时窗,提高了生油转化率,极大地增加了油气资源量;②“冷盆、超压、颗粒包壳、沸石溶蚀”四元控储模式突破了传统的碎屑岩储层发育的深度下限,扩展了油气勘探空间;③断-压双控输导机制提供了高能油气输导通道,控制了油气在纵向上差异运移,保障了超深层油气高效充注。根据超深层烃源岩演化史、压力演化史、成岩演化序列、成藏期和构造演化史等多要素演化叠合特征,建立了征沙村地区“温-压控烃、四元控储、断-压控输”的油气成藏模式,以期为征沙村地区勘探部署和培育新的战略接替阵地提供理论指导和科学依据。The expansion toward deep-to-ultra-deep oil and gas exploration is strategically vital for reserve growth and production addition in the Junggar Basin.Well Zheng 10 drilled in the Zhengshacun area in the hinterland of the Junggar Basin underscores the significant potential of the basin's central part for ultra-deep oil and gas exploration.This study first presents the characteristics of hydrocarbon reservoirs in the area,emphasizing the elements of pertroleum system,such as source rocks,reservoirs,and migration pathways,that contribute to hydrocarbon accumulation.Accordingly,it identifies the determinants of hydrocarbon accumulation in the area and establishes the hydrocarbon accumulation mode.Furthermore,this study presents the implications of these factors for deep-to-ultra-deep oil and gas exploration in the area.The results reveal three major factors influencing the hydrocarbon accumulation therein:(1) A mechanism driven by low geothermal gradients and overpressure for hydrocarbon-generating evolution.This mechanism extends the oil window and elevates the transformation ratio,thereby significantly enriching hydrocarbon resources;(2) A four element(including low geothermal gradient,overpressure,chlorite coating,and zeolite dissolution)-controlled reservoir formation.This pattern redefines the lower depth limit for the development of conventional clastic reservoirs,thus broadening the scope for hydrocarbon exploration.(3) A migration mechanism governed by both faults and overpressure.This mechanism provides high-energy pathways for hydrocarbon migration and determines the vertical differential hydrocarbon migration,thus ensuring efficient hydrocarbon charging in ultra-deep reservoirs.By integrating superimposed factors including ultra-deep source rock evolution,pressure changes,tectonic shifts,diagenetic sequences,and hydrocarbon accumulation periods,we establish a hydrocarbon accumulation mode for the study area.This mode incorporates the temperature-pressure control over hydrocarbon-generating evolution,four

关 键 词：输导机制 源岩演化 优质储层 深层-超深层 征沙村地区 准噶尔盆地 

分 类 号：TE122.3[石油与天然气工程—油气勘探]