论文详情

巨厚层砂砾岩底水油藏注水开发研究

断块油气田

2004年 11卷第04期

阅读：126

查看详情

Title

Water-flood Recovery in Huge Pay layer Botton Water Reservoir

作者

许　宁　张方礼　王占红

Authors

Xu Ning,Zhang Fangli , Wang Zhanhong

单位

(辽河油田分公司勘探开发研究院)

摘要

雷64 块为块状砂砾岩底水油藏,油层巨厚,最厚可达200 m ,储量丰度大。在油藏天然能量、储层特征分析和应用解析公式、数模方法对注水开发采收率变化、采液和采油指数变化趋势、注水方式、注采井网、见水时间研究的基础上,认为雷64 块应该采用两套层系、人工注水开发。下层系以注底水层为主,在局部底水与油层之间隔层较发育的部位,进行层内注水。与潜山油藏不同,块状砂砾岩油藏仍具有层状特性,实际工作中需要认真分析隔层因素,在实施两套层系、正方形井网210 m 井距的情况下,注采井距成为影响注水开发效果的主要因素。采用分采合注,将因部分注采井距达到150 m 而大大加速水淹水窜,影响开发效果。

Abstract

Reservoir Lei64 is a sand-conglomerate bottom water

reservoir , with huge thick pay layer and plentiful reserves

abundance. Natural energy , the pay layer characteristic ,the oil

reserve recovery factor improved ,IPR changing trend , waterflood

pattern as well as breakthrough time was analyzed and studied by

analytics formula and reservoir simulation in the paper. It was

advised that the Reservoir L64 should adopt two sets of develop

layers and waterflood recovery. Water should be injected in

bottomwater in lower layer. Different from the antiquity hidden

mountain reservoir , a sand-conglomerate reservoir still have the

layer characteristic , needing the earnest analysis interlayer.

Under the situation of two sets of development layers , exact 210

meters square pattern , the produce-inject well spacing becomes

the main factor influencing waterflood development result.

关键词：

砂砾岩油藏　注水开发　块状　底水;

Keywords:

Sandstone and conglomerate reservoir ,Waterflooding development ,Massive ,Bottom water.

;

基金项目

DOI