曲塘次凹油田地层水特征及其石油地质意义  

Characteristics of Formation Water and Its Petroleum Geological Significance in Qutang Sub Sag

作　　者：战常武[1] ZHAN Chang-wu(Exploration and Development Research Institute, Liaohe Oilfield Company PetroChina,Panjin 124010, Liaoning, China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010

出　　处：《承德石油高等专科学校学报》2020年第4期21-23,34,共4页Journal of Chengde Petroleum College

基　　金：中国石油天然气股份有限公司项目(海外五大油气合作区油气田开发方式优化及技术对策研究):2011D-2001。

摘　　要：为探究曲塘次凹油田地层水特征,以曲塘次凹历年来的油田地层水分析化验资料为基础,分析了凹陷内地层水矿化度特征、主要水化学参数特征及其相互关系。从水化学指标参数统计结果来看,曲塘次凹的地层水环境相对开放,曾受过大气水的淋滤,不利于油气的保存,相对开放的水环境是曲塘次凹油田高产井偏少、整体产量偏低不可忽视的因素之一。此外,碳酸盐平衡系数与该区储层质量也存在相关性,特别是储层渗透率与碳酸盐平衡系数呈明显的负相关。Based on the analysis and test data of formation water in Qutang sub sag over the years,the characteristics of formation water salinity,main hydrochemical parameters and their interrelations are analyzed.According to the statistical results of water chemical index parameters,the formation water environment of Qutang sub sag is relatively open and has been leached by atmospheric water,which is not conducive to the preservation of oil and gas.The relatively open water environment is one of the factors which cannot be ignored in the low production of Qutang sub sag oilfield.In addition,there is a correlation between the carbonate equilibrium ratio and the reservoir quality,especially the negative correlation between the permeability and the carbonate equilibrium ratio.

关 键 词：地层水 水化学参数 曲塘次凹 碳酸盐平衡系数 

分 类 号：P618.13[天文地球—矿床学]