鄂尔多斯盆地麻黄山西克里摩里组储层特征及有利区优选  

Reservoir characteristics and favorable area optimization of Kelimoli Formation in western Mahuangshan,Ordos Basin

作　　者：刘玲[1] 鲁锴 吴疆[1] 郭利果 LIU Ling;LU Kai;WU Jiang;GUO Liguo(Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 100083,China;North China Oil and Gas Company,SINOPEC,Zhengzhou 450006,China)

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]中国石化华北油气分公司,河南郑州450006

出　　处：《断块油气田》2025年第1期71-78,共8页Fault-Block Oil & Gas Field

基　　金：中国科学院A类战略性先导项目“深层油气优质储层发育与分布”(XDA14010201);中石化科技部重点攻关项目“鄂尔多斯盆地走滑断裂带成因及控藏机制研究”(P20062-4)。

摘　　要：鄂尔多斯盆地麻黄山西奥陶系克里摩里组勘探前景良好,但目前储层发育特征及分布规律尚认识不清,严重制约了下一步勘探步伐。文中充分利用新钻井及三维地震资料,解剖了麻黄山西克里摩里组储层的发育特征,刻画了岩溶缝洞及裂缝的分布规律,优选了储层有利区。研究表明,麻黄山西克里摩里组主要发育岩溶缝洞及裂缝型储层,乌拉力克组剥蚀线以东发育风化壳岩溶缝洞储层,剥蚀线以西发育内幕岩溶缝洞系统。受断层影响,裂缝主要分布于研究区西部,其次为东部,中部较不发育。裂缝走向主要为北北东—南南西向,其次为近东西向。综合岩溶缝洞及裂缝发育特征,克里摩里组可划分为Ⅲ类有利区:Ⅰ类为岩溶缝洞及裂缝叠合区,可作为勘探首选目标区,主要分布于研究区中东部;Ⅱ类为裂缝发育区,为次有利勘探区,主要分布于研究区西部,东部次之;Ⅲ类为非有利区,岩溶缝洞及裂缝均不发育,分布于研究区中部。The exploration of Kelimoli Formation in western Mahuangshan has good prospects,but the understandings of development characteristics and distribution law of the reservoir are unclear at present,which seriously restricts further exploration.By full use of new well data and three-dimensional seismic data,the characteristics of Kelimoli Formation reservoir in western Mahuangshan were analyzed,the distribution law of karst fracture-vugs and fractures were characterized,and the favorable areas of reservoir were selected.The research indicated that karst fracture-vug and fracture-type reservoirs were mainly developed in Kelimoli Formation,western Mahuangshan.The weathering crust karst fracture-vug reservoir was developed in the east of the denudation line of Ulalike Formation,and the inner karst fracture-vug system was developed in the west of the denudation line.Affected by faults,the fractures were mainly distributed in the western part of the study area,followed by the eastern part,and was less developed in the middle.The trend of fractures was mainly NNE-SSW,followed by near east-west.According to the karst fracture-vug and fracture development characteristics,Kelimoli Formation could be divided into three types.TypeⅠwas the overlap area of karst fracture-vugs and fractures,which could be used as the preferred exploration target area,and was mainly distributed in the middle and eastern part of the study area.TypeⅡwas the fracture development area,which was the secondary favorable exploration area,and was mainly distributed in the west part of the study area,followed by the east part.TypeⅢwas the non-favorable area,where both karst fracture-vugs and fractures were undeveloped,and was distributed in the middle of the study area.

关 键 词：储层特征 储层分布 裂缝预测 储层有利区 克里摩里组 麻黄山西 

分 类 号：TE122.2[石油与天然气工程—油气勘探]