文昌A凹陷地温-地压系统与油气成藏的关系

发布时间：2018-03-15 10:26

  本文选题：温压系统　切入点：油气藏分布　出处：《特种油气藏》2017年02期 　论文类型：期刊论文

【摘要】：地温-地压系统(以下简称温压系统)控制油气的生成、运移和聚集,为明确文昌A凹陷温压系统特征及其与油气成藏的关系,基于地温和地压实测数据及声波测井等资料,利用温压系统原理,对珠江口盆地文昌A凹陷的地温场、地压场及温压系统特征进行剖析,从油气的生成、保存及分布角度探讨温压系统与油气成藏的关系。研究表明:文昌A凹陷地温梯度较高,平均为33.8℃/km,有利于有机质的成熟与烃类的生成;泥岩欠压实段集中在珠海组、恩平组,强化了油气的封盖作用;珠江组泥岩不发育异常压力,以毛细管压力封闭为主;凹陷发育高压型复式温压系统,上、下2套温压系统的流体能量差较大,油气以垂向运聚为主,浅部静压型温压系统内部最利于油气富集成藏,恩平组含油气系统是最重要的勘探对象。该研究对珠江口盆地的勘探有一定的指导意义。
[Abstract]:The geothermal pressure system (hereinafter referred to as the warm pressure system) controls the generation, migration and accumulation of oil and gas. In order to clarify the characteristics of temperature and pressure system in Wenchang A sag and its relationship with oil and gas accumulation, it is based on the measured data of ground temperature and ground pressure and acoustic logging, etc. Based on the principle of temperature and pressure system, the characteristics of geothermal field, ground pressure field and temperature pressure system in Wenchang A depression of Zhujiang River mouth basin are analyzed, and the generation of oil and gas is analyzed. The relationship between temperature and pressure system and hydrocarbon accumulation is discussed in terms of preservation and distribution. The results show that the geothermal gradient of Wenchang A depression is relatively high, with an average of 33.8 鈩，

本文编号：1615624