塔里木盆地奥陶系古潜山碳酸盐岩岩溶储层评价与预测——以轮古7井区以东为例

发布时间：2018-03-30 04:33

本文选题：储层评价　切入点：碳酸盐岩　出处：《中国岩溶》2017年01期

【摘要】：塔里木盆地奥陶系古潜山碳酸盐岩岩溶储层具有埋藏深、非均质性强的特点。岩溶储集空间主要为后期溶蚀孔、溶洞和溶缝为主。通过古地貌恢复及岩溶垂向分带研究,结合油藏开采动态,对轮古7井区以东地区奥陶系碳酸盐岩岩溶储层评价与预测。研究认为:高产高效井主要位于岩溶缓坡地的峰丘洼地、丘峰洼地及岩溶峰丛谷地的溶丘、溶峰及其边坡部位。垂向上表层岩溶带和垂向渗滤带的上部,开发效果较好,多发育裂缝-孔洞型、洞穴型储层;径流溶蚀带、潜流溶蚀带岩溶发育相对较弱,局部发育小规模溶洞或岩溶管道,岩溶储层以裂缝型或孔洞型为主。在此基础上预测出五个高产高效油气储层岩溶区,为油气勘探与开发提供依据。
[Abstract]:Carbonate karst reservoir of Ordovician buried hill in Tarim Basin is characterized by deep burial and strong heterogeneity. The karst reservoir space is mainly composed of late dissolution pore, karst cave and dissolved fracture. Through the study of paleogeomorphology restoration and karst vertical zonation, the karst reservoir space is studied. Combined with reservoir exploitation performance, the evaluation and prediction of Ordovician carbonate karst reservoir in the east of Lungu 7 well area are carried out. It is considered that the high yield and high efficiency wells are mainly located in the peak hill depression, the hill peak depression and the karst peak cluster valley in the karst gentle slope. The upper part of the vertical surface karst zone and vertical percolation zone has a good development effect, and there are many fracture-hole types, cavernous reservoirs, runoff dissolution zone, and subsurface flow dissolution zone, the karst development of which is relatively weak. There are small karst caverns or karst pipelines developed locally, and the karst reservoirs are mainly of fracture or pore type. On this basis, five karst areas of high yield and high efficiency oil and gas reservoirs are predicted, which provide basis for oil and gas exploration and development.
【作者单位】：中国地质大学(武汉)环境学院;中国地质科学院岩溶地质研究所/国土资源部广西岩溶动力学重点实验室;
【基金】：国家自然基金青年基金项目(41302122) 国家重点基础研究发展计划(973计划)项目(2011CB201001) 国土资源部公益性行业科研专项(201211082)共同资助中国地质调查局地调项目(DD20160300)
【分类号】：P618.13

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