摘要
塔里木盆地顺北超深层走滑断控型凝析气藏储集体非均质性极强,缝洞体描述精度要求高,勘探技术难度大。以顺北4号走滑断裂带为例,研究走滑断控型凝析气藏特征,分段构建拉分、挤压、平移以及斜向弱挤压性质的储集体地质模型,研发形成以“断控缝洞体三维立体量化描述、最优靶点和轨迹设计”为核心的勘探关键技术系列。研究结果表明:超深层走滑断控型储集体具有“栅状”储集结构特征,结构模型为“一体多栅”;“寒武供烃、断坡输导、断栅控富、多期充注、动态成藏”,具有高产富集特点。早期原油充注与晚期多幕次差异天然气充注及微弱的次生改造导致凝析气藏差异富集;“以压缩感知拓频”“相控波阻抗反演”和“立体解析技术”为核心的断控缝洞体三维立体量化描述技术,以及“通源主断面+串珠强波谷+应力场方向”三参数“靶点”空间定位技术,为高产井靶点优选与轨迹设计提供支撑。上述研究与技术应用支撑实现了顺北4号断裂带“少井高产”,为超深层碳酸盐岩凝析气藏勘探开发提供了典型案例。
The ultra-deep,strike-slip fault-controlled condensate gas reservoirs in the Shunbei area of the Tarim Basin exhibit extremely strong heterogeneity,posing significant challenges to both the characterization precision for fracturedvuggy reservoirs and the advancement of exploration technologies.In this study,we investigate the characteristics of such reservoirs in the No.4 strike-slip fault zone in the Shunbei area.The reservoir geological models are constructed for segments with pull-apart,compressive,translational,and oblique weak compression properties in the fault zone.Moreover,key exploration techniques are developed,focusing on three-dimensional quantitative characterization of faultcontrolled fractured-vuggy reservoirs,along with optimal landing zone selection and trajectory design for high-yield wells.The results indicate that the ultra-deep,strike-slip fault-controlled reservoirs exhibit grid-like structures,corresponding to an integrated reservoir model with multiple grid-like structures.These reservoirs exhibit high hydrocarbon enrichment and production due to multiple factors:supply from the Cambrian source rocks,hydrocarbon transport along fault slopes,hydrocarbon enrichment governed by fault-controlled grid-like structures,multi-stage hydrocarbon charging,and dynamic hydrocarbon accumulation.The mechanisms underlying the differential hydrocarbon enrichment of the condensate gas reservoirs include early-stage oil charging,multi-episodic differential gas charging during the late stage,and weak secondary modifications.Two key exploration technologies are developed,that is,a three-dimensional quantitative characterization technology for fault-controlled fractured-vuggy reservoirs,which is centered on compressed sensing-based frequency expansion,phase-controlled wave impedance inversion,and three-dimensional analysis,and a spatial positioning technology for landing target zones based on three parameters:source rock-connecting major fault planes,strong beadlike wave troughs,and stress field direction.These technologies provide technical support for the landing zone selection and trajectory design of high-yield wells.The theoretical achievements and technology application in this study have enabled maximum productivity with a minimum number of wells in the No.4 fault zone within the Shunbei area,providing a typical case for the exploration and exploitation of ultra-deep carbonate condensate gas reservoirs.
作者
李宗杰
云露
曹自成
韩俊
陈菁萍
朱莲花
李弘艳
卜旭强
LI Zongjie;YUN Lu;CAO Zicheng;HAN Jun;CHEN Jingping;ZHU Lianhua;LI Hongyan;BU Xuqiang(Northwest Oil Field Company,SINOPEC,Urumqi,Xinjiang 830011,China;Exploration and Development Research Institute,Northwest Oil Field Company,SINOPEC,Urumqi,Xinjiang 830011,China)
出处
《石油与天然气地质》
北大核心
2026年第1期18-33,共16页
Oil & Gas Geology
基金
国家自然科学基金企业创新发展联合项目(U24B6001,U21B2063)
中国石油化工股份有限公司科技部项目(P23078,P24172)
新疆维吾尔自治区天山英才计划优秀工程师项目(顺北超深碳酸盐岩油气藏高效勘探开发)。
关键词
勘探关键技术
断控缝洞型储集体
凝析气藏
顺北超深层
塔里木盆地
key exploration technology
fault-controlled fractured-vuggy reservoir
condensate gas reservoir
ultradeep reservoir in Shunbei area
Tarim Basin
