柯克亚凝析油气田的成藏机理  

POOL-FORMING MECHANISM OF KEKEYA CONDENSATE OIL, AND GAS FIELD

作　　者：何登发[1] 陈红英[2] 柳少波[1] 朱如凯 邓兴梁 

机构地区：[1]中国石油天然气总公司石油勘探开发科学研究院 [2]塔里木石油勘探开发指挥部研究中心

出　　处：《石油勘探与开发》1997年第4期28-32,共5页Petroleum Exploration and Development

摘　　要：塔里木盆地柯克亚凝析油气田主要发育中新统上、下油组及始新统深部油组，由7个凝析油气藏组成。柯克亚背斜在安居安期即具雏形，主要形成千上新世末-早更新世。深部油组以侏罗系为油源，中新统上、下油组以石炭系—下二叠统和侏罗系为混合油气源。柯克亚油气田具三阶段成藏模式，即“古油藏形成，背斜雏形期油气充注，晚期驱替成藏”。上、下油组为决生凝析气藏，深部油组为原生凝析气藏。根据对柯克亚周围地区钻探失利原因的分析，提出应对山前第二排背斜带落实深、浅层构造，加强成藏机理研究，选择相对简单的背斜先行钻探，可望取得油气勘探的突破性进展。The Kekeya condensate oil and gas field in Tarim basin, where Upper and Lower Miocene oil formations, and the deeper Eocene oil formation developed, consists of seven condensate pools. The Kekeya anticline had rudimentary form in the Anjuan period, and formed during the period from the end of Pliocene to early Pleistocene. The deeper pool has been charged by the oil generated from Jurassic, and the upper and lower pools have been sourced by the Carboniferous and Lower Permian. This field has a three stage formation model, paleo-pool formation, hydrocarbon charging during the growing of anticline and recharging during the Iater period. As a result of that, the upper to lower formations became the secondary gas condensate pools and the deeper formation became the primary gas condensate pool. Based on the analyses of the reasons causing the failure of drilling in the adjacent anticlines to Kekeya area, this paper finally puts forward a strategy of hydrocarbon exploration in that region.

关 键 词：凝析油气田 油气藏形成 塔里木盆地 

分 类 号：P618.130.1[天文地球—矿床学]