鄂尔多斯盆地中国石化“十三五”油气勘探进展与新领域  

Petroleum exploration progress and new field of Sinopec in Ordos Basin during the 13th Five-Year Plan period

作　　者：何发岐[1] 张宇[2] 王付斌[1] 张茹 张威[3] 齐荣[3] 安川[3] 黎小伟[1] 邓杰[3] He Faqi;Zhang Yu;Wang Fubin;Zhang Ru;Zhang Wei;Qi Rong;An Chuan;Li Xiaowei;Deng Jie(Sinopec North China Oil&Gas Company;Department of Oilfield Exploration&Development,Sinopec;Research Institute of Exploration and Development,Sinopec North China Oil&Gas Company)

机构地区：[1]中国石化华北油气分公司,河南省郑州市450006 [2]中国石化油田勘探开发事业部 [3]中国石化华北油气分公司勘探开发研究院

出　　处：《中国石油勘探》2022年第5期1-12,共12页China Petroleum Exploration

基　　金：中国石油化工股份有限公司重点科技项目“鄂尔多斯盆地大中型气田目标评价及勘探关键技术”(P17009),“鄂尔多斯盆地元古—下古生界目标评价与关键技术”(P20043)。

摘　　要：“十三五”初期,鄂尔多斯盆地中国石化华北油气分公司矿权区油气勘探面临的难题是盆地天然气储量动用难度大、石油成藏认识不清、资源接替阵地不明朗。5年期间,通过加强盆地整体性构造、沉积演化研究,分析成藏要素差异配置,创新盆地北部过渡带上古生界天然气差异聚集认识,攻关形成盆缘复杂含水气藏勘探开发技术,发现东胜气田;在重新处理解释三维地震资料基础上建立盆地南部过渡带中生界致密砂岩断缝体成藏认识,通过断缝体油藏“六定”描述,评价出中生界致密油新的甜点类型;利用大面积三维地震资料重新处理,发现盆地北部海相碳酸盐岩断缝控制岩溶储层,提出下古生界大型不整合碳酸盐岩岩溶成储成藏模式,开展复杂碳酸盐岩岩溶储层识别预测与选区评价,进而加强盆地南部下古生界碳酸盐岩勘探,形成两个千亿立方米接替目标。在总结油气勘探成果基础上,形成盆地大范围发育走滑断裂体系、岩溶储层受断裂控制等地质认识。综合分析认为:“十四五”期间,盆地深部海相碳酸盐岩风化壳岩溶之下多期活动走滑断裂控制的岩溶带、盆地周缘复杂致密碎屑岩成藏区是重要的勘探方向和领域。In the early 13Five-Year Plan period, petroleum exploration of Sinopec North China Oil & Gas Company in Ordos Basin was faced with challenges in producing natural gas reserves, unclear understanding of oil accumulation law, and uncertain resource replacement fields. In the past five years, by strengthening the integral structure and sedimentary evolution study in the basin, the differential configuration of hydrocarbon accumulation elements was analyzed, understanding of gas differential accumulation in the Upper Paleozoic in the transitional zone at the northern basin margin was innovatively formed, and the exploration and development technology for complex water-bearing gas reservoir in basin margin was developed, which supported to discover Dongsheng Gas Field;Based on the reprocessing and interpretation of 3D seismic data, hydrocarbon accumulation in the Mesozoic tight sandstone fault-fracture body in the transitional zone at the southern basin margin was identified, and new “sweet point” types of the Mesozoic tight oil were evaluated by using “six-determination” description method of fault-fracture body oil reservoir;The fault-fracture controlled karst reservoir in marine carbonate rocks was discovered by largearea 3D seismic data reprocessing, and the reservoir development and hydrocarbon accumulation pattern in large unconformity carbonate karst reservoirs in the Lower Paleozoic was proposed. After identifying and predicting the distribution of carbonate karst reservoirs, favorable zones were selected and evaluated, and carbonate exploration in the Paleozoic in the southern basin was strengthened, which supported to prove two gas replacement fields with reserve of hundred billion cubic meter level. Finally, petroleum exploration results were summarized and geological understanding was formed that the strike-slip fault system is widely developed in the basin and karst reservoirs are controlled by faults. The comprehensive analysis indicates that the karst zones controlled by multi-stage active strik

关 键 词：勘探进展 断控岩溶 断缝体 华北油气分公司 鄂尔多斯盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]