摘要
二连盆地乌兰花凹陷混合花岗岩潜山油藏取得了重大勘探突破,成为二连油田规模增储与建产的重点领域。针对混合花岗岩潜山地层岩石类型多样、储集空间复杂,为岩性准确识别及储集空间评价带来的困难,通过综合分析乌兰花凹陷混合花岗岩潜山井的岩矿资料,归纳混合花岗岩类变质岩的岩石特征并制定岩石的命名原则,进而对储集空间类型及成因开展深入研究,厘清乌兰花凹陷混合花岗岩潜山油藏的有利储集空间及其分布规律,建议勘探重点为主洼槽中央潜山,其次为主洼槽中央向周边斜坡过渡带的基底潜山,最后为主洼槽东侧、西侧和南侧斜坡带基底潜山,为下步勘探开发目标优选提供了科学依据。
Major exploration breakthroughs of mixed granite buried hill reservoir have been made in Wulanhua Sag,Erlian Basin and it has become the key area of increasing reserve and production in Erlian Oilfield.Aiming at the difficulties of diverse rock types and complex reservoir space of mixed granite buried hill formation in accurate lithology identification and reservoir evaluation,by comprehensively analyzing the rock-mineral data of mixed granite buried hill wells in Wulanhua Sag,generalizing lithological characteristics of mixed granite metamorphic rock and setting naming rules for rocks,further study on reservoir types and genesis was carried out to clarify the favorable reservoir and its distribution law.It is recommended that the exploration focus on the central buried hill in the main depression,followed by the basement buried hill in the transition zone from the center to the periphery of the main depression,and finally the basement buried hill in the east,west and south slope zone of the main depression,providing scientific basis for the next step of exploration and development target optimization.
作者
秦平
郭广峰
齐跃敏
胡洋
陈贺
QIN Ping;GUO Guangfeng;QI Yuemin;HU Yang;CHEN He(No.2 Mud Logging Company, BHDC, CNPC, Renqiu, Hebei 062552, China;Drilling Directional Engineering Office, Inner Mongolia Coal Construction Engineering Corporation, Chifeng, Inner Mongolia 024411, China;No.1 Mud Logging Company, BHDC, CNPC, Tianjin 300280, China)
出处
《录井工程》
2020年第2期124-129,共6页
Mud Logging Engineering
关键词
混合花岗岩潜山
岩性识别
储集类型评价
风化溶蚀作用
油藏分布规律
mixed granite buried hill
lithology identification
reservoir type evaluation
weathering dissolution
reservoir distribution law
