摘要
位于准噶尔盆地腹部的陆梁油气田是准噶尔盆地的又一个亿吨级油气田。笔者运用地球化学方法分析了陆梁油气田石炭纪—早白垩世地层水的类型、平面和纵向分布特征,将其划分为3 个水文地质旋回,第一旋回为石炭系—三叠系,为深层静止开放的滞流型水力系统;第二旋回为侏罗系八道湾组—西山窑组,为中层弱开放的压实驱动型水力系统;第三旋回为侏罗系头屯河组—白垩系,为浅层强开放的重力驱动型水力系统。第一、二水文地质旋回是油气生成和初次运移的有利时期,淋滤期前的一段时间是油气二次运移和成藏的较好时期,第三水文地质旋回是油气藏破坏及次生油气藏形成的时期。
Luliang oil field being located in Central Zhunge'er Basin is the another giant oil field with reserves of over 100 × 106 t in the basin. The types and vertical and lateral distribution features of Carboniferous - Early Cretaceous formation waters were investigated by applying geochemical methods. There are three hydrogeological cycles there: the first cycle includes these strata from Carboniferous to Triassic and belongs in a deep-seated stagnant hydrodynamic system without opening-up; the second cycle from the Badaowan Formation to Xishan Formation of Jurassic and in a medium-seated compaction drive hydrodynamic system with weak opening-up; and the third cycle from Toutunhe Formation of Jurassic to Cretaceous and in a shallow-seated gravity drive hydrodynamic system with strong opening-up. The first and second hydrogeological cycles were the most favourable time of hydrocarbon generation and primary migration, and the period before the leaching stage was the more favourable time of hydrocarbon secondary migration and reservoiring; and the third hydrogeological cycle was the time of reservoir destruction and secondary reservoir formation.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2005年第4期34-37,6,共4页
Natural Gas Industry
基金
"青藏高原形成与演化及其环境
资源效应(973G1998040800)"项目资助
关键词
准噶尔盆地
地层水
水文地质学
油气运移
油气藏形成
Catchments
Geochemistry
Gravitation
Hydrodynamics
Hydrogeology
Leaching
Natural gas
Petroleum reservoirs
