Grading Evaluation and Ranking of CO₂ Sequestration Capacity in Place(CSCIP) in China's Major Oil Basins: Theoretical,Effective, Practical and CCUS-EOR     

LI Yaohu  WANG Yang  SHI Yu  YANG Leilei  CUI Qiliang  BI Caiqin  XU Yinbo  WANG Qianyou  SHAN Yansheng  LIU Weibin  MIAO Miao  WANG Ting 《《地质学报》英文版》2023,97(3):873-888

Because it is necessary to focus on differences in regional oil reservoirs and determine the priority of the CCUSEOR(Carbon capture, utilization, and storage-enhanced oil recovery) deployment under China’s net-zero CO₂ emission target, systematic and regional evaluations of CO₂ sequestration capacity in major oil basins are needed considering the geofluid properties―carbon sequestration capacity in place(CSCIP)―where the ’in place’ indicates actual geological formation cond...  相似文献   

Petroleum Retention,Intraformational Migration and Segmented Accumulation within the Organic-rich Shale in the Cretaceous Qingshankou Formation of the Gulong Sag,Songliao Basin,Northeast China     

HUANGFU Yuhui  ZHANG Jinyou  ZHANG Shuichang  WANG Xiaomei  HE Kun  GUAN Ping  ZHANG Huanxu  ZHANG Bin  WANG Huajian 《《地质学报》英文版》2023,97(5):1568-1586

In this study, organic geochemical and petrological analyses were conducted on 111 shale samples from a well to understand the retention, intraformational migration and segmented accumulation(shale oil enrichment in different intervals is unconnected) features of shale oil within the organic-rich shale in the Qingshankou Formation of the Gulong Sag. Our study shows that retained petroleum characteristics in the investigated succession are mainly influenced by three factors: organic richness, int...  相似文献   

An Improved Method for Evaluating Hydrocarbon Generation of Shale: A Case Study of the Lower Cretaceous Qingshankou Formation Shale in the Songliao Basin     

ZHANG Yuchen  WANG Min  LI Jinbu  ZHAO Chen  YAN Yu  XU Liang  DENG Zixiao 《《地质学报》英文版》2023,97(6):1825-1835

Because of the influence of hydrocarbons, especially adsorbed hydrocarbons, on the detection of cracked hydrocarbon (S2) and total organic carbon (TOC), the hydrogen index (HI)-based hydrocarbon generation model deviates from actual practice. In this study, the shale in the first member of the Qingshankou Formation in the central depression of the Songliao Basin, where in northeastern China, was taken as the research object and a correction method for S2 and TOC was established. By correcting the experimental results of different maturity samples, the actual hydrocarbon generation model has been revealed, the differences before and after correction compared, and the evolutionary characteristics of the adsorbed hydrocarbon content were clarified. The results show that the organic matter enters the hydrocarbon generation threshold at Ro–0.5% and reaches the hydrocarbon generation peak at Ro–1.0% and that the hydrocarbon generation process ends at Ro–1.3%. The hydrocarbon generation model established based on the measured values has a ‘lag effect’ compared to actual values, and this extends the hydrocarbon generation window of organic matter and delays the hydrocarbon generation peak. With the increase of maturity, adsorbed hydrocarbon content shows the characteristics of ‘first increasing, then stabilizing, and then decreasing’, and reaches the most abundant stage at Ro of 0.9%–1.3%.  相似文献   

四川盆地西部二叠系多期台缘带油气勘探潜力     

杨雨  文龙  陈聪  汪华 《地学前缘》2023,30(1):1-10

四川盆地西部二叠纪时期位于稳定克拉通边缘,受到海西运动、东吴运动和峨眉地裂运动的共同作用,发生构造-沉积分异。本文采用构造控盆、盆地控相、相控成藏要素组合的研究思路,在川西地区开展新一轮研究工作,揭示了二叠纪构造-沉积分异对油气成藏的控制作用,明确川西地区海相碳酸盐岩油气勘探潜力。盆地二叠纪以拉张伸展背景为主,总体呈现“南部隆升、西部裂陷、北部拉张”的沉积格局。二叠纪多期构造运动共同导致了川西地区一系列台内裂陷的形成,叠加二叠纪时期海平面变化,控制了栖霞至长兴期的多期台缘发育。川西北地区发育北东—南西向和北西—南东向两组断裂体系控制该区岩相古地理格局,其中龙门山断裂带主要控制了泥盆纪至二叠纪栖霞期沿上扬子台地西北缘发育台缘带,呈北东向展布。茅口至长兴期台缘带受克拉通边缘及台内裂陷共同控制,在川西地区呈北东向展布,梓潼—老关庙地区沿裂陷发育呈北西向展布,在剑阁一带,栖霞、茅口、吴家坪和长兴组多期台缘带叠置发育。川西地区二叠纪多期台缘控制了多层系优质滩相储层和礁储层叠置发育,是川西地区二叠系规模孔隙型储层发育的主控因素。多期古裂陷、多期台缘带和成藏期大型古隆起三元素耦合有利于油气规模聚集成...  相似文献   

南阳凹陷东庄次凹油气成藏模式分析     

吕孝威 《地质论评》2021,67(Z1):67z1137-67z1138

正东庄次凹位于南襄盆地南阳凹陷南部地区,研究区的东北部是魏岗鼻状构造,南部和东南部是新野-曲洼断超带,西临凹陷斜坡带,北靠焦店古次凹。东庄次凹砂体沉积连片展布且相对稳定,储集条件良好,邻近油源且油源条件较好,是南阳凹陷增储上产的主要阵地之一。但是该区地层沉积过程中断裂较为发育,各期断层相互切割,  相似文献   

微生物异常探索江汉盆地江陵凹陷万城断裂带北部油气富集规律及有利区     

袁志华  赵青  张玉清  邓富强  秦晓蕾  张忠坡  李英贤  李秀荣 《地质论评》2021,67(3):67040011-67040011

江汉盆地江陵凹陷万城断裂带北部研究区,地表条件复杂,地震和钻井施工困难,油气富集规律还不甚清楚。因此,试图通过微生物找油方法,最小成本最高效率,以探明本研究区的油气富集规律。研究区面积约230.0 km2,采集样品间距南北500 m × 东西250 m,共采集并分析了样品2354个。研究表明,微生物异常主要分布在万城断层的东侧,其中微生物气异常零星分布,异常较弱,无独立气藏。在综合地质等资料的基础上,微生物异常分布特征表明,万城断裂带显示了来自北西和北东向的双向物源,油气来源于梅槐桥洼陷,属近源成藏。万城断裂带东侧和坡折带低位扇砂体是油气有利富集区,前景较好,主要为古近系新沟咀组成藏。万城断裂带西侧有小面积油藏,可能系白垩系成藏。最后,对微生物异常区进行了分级评价,指明了重点攻关区、评价有利和较有利区,对大幅降低勘探风险和提高勘探成功率,具有重大的社会经济效益和深远的现实意义。  相似文献   

基于二维核磁确定博兴洼陷页岩可动油饱和度     

王敏  傅爱兵  李进步  杜振京 《地质论评》2021,67(Z1):67z1265-67z1266

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生物标志物分析技术在溢油源识别中的应用     

鲍燕  徐大庆  王忠  金洪蕊 《地质论评》2021,67(Z1):67z1257-67z1258

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公益性油气基础地质调查的进展与发展方向     

张文浩  高永进  周新桂  翟刚毅  徐兴友  白忠凯  周志  毕彩芹  单衍胜  韩淼  孙相灿  张远银  刘卫彬 《地质学报》2021,95(5):1630-1643

在我国油气资源对外依存度不断攀升,能源安全形势日益严峻的背景下,油气调查评价和勘探开发仍是能源工作的重中之重.近年来,公益性油气调查工作聚焦自身优势,积极服务于国家能源安全,支撑油气资源管理与矿权体制改革成效显著,在油气勘探的新区、新层、新类型方面不断取得突破性成果.公益性油气调查在新疆塔里木盆地西北部温宿凸起新近系、沙井子构造带志留系,准噶尔盆地南缘的二叠系和三叠系均获得了工业油(气)流;在南方鄂西宜昌、黔北武陵山等复杂构造区的页岩气、松辽盆地的页岩油、四川盆地南部煤层气等资源的勘探均取得了重大突破,这些成果有力带动了能源企业的积极投入与勘探,有效彰显了公益性油气地质调查的引领和示范作用.深层油气资源的安全勘探、油气矿权空白区的基础地质调查及非常规油气的调查与勘探将是我国未来油气勘探重要的接替领域.公益性油气调查将以油气基础地质问题为抓手,积极探索油气勘探接替领域,为油气资源规划和管理做好支撑,力争为国家能源安全保障与重大发展战略做出更大的贡献.  相似文献   

鄂尔多斯盆地樊学油区长8砂岩裂缝平面展布及控制因素     

赵希 《地质与勘探》2021,57(3):667-675

裂缝发育程度及其平面展布是影响低孔特低渗储层有效、高效注水开发的关键。鄂尔多斯盆地樊学油区长8油藏及周边油藏投产油井存在砂岩裂缝发育区含水上升快、裂缝侧向油井水驱开发效率低等问题。本文基于岩心、声电成像测井资料标定常规测井资料,选取特征参数构建裂缝识别综合指数,实现樊学油区长8储层中砂岩裂缝的识别。依据识别结果绘制砂岩裂缝平面展布图,进而结合区域构造应力场及沉积特征分析裂缝发育的控制因素及其对生产开发的影响。研究表明,基底断裂中生代以来的重新活动控制了樊学油区裂缝的形成与展布,裂缝优势展布方位为北北西向和北东东向,砂岩裂缝的发育程度受区域构造应力场、砂体厚度以及岩层组合等因素影响。裂缝发育区油井具有初产高、产量递减快的特点,因此,在实际生产开发中,需要选择合适的注采井网,尽量采用大井距、小排距的方式提高驱油效率。上述认识为油藏开发部署提供一定的参考。  相似文献