摘要
中高渗砂岩储层经长期注水开发,在油水井间形成固定水流通道,导致大量的无效水循环。为改善注水效果达到控水稳油目的,必须对优势通道进行封堵。而方便判断优势通道位置和准确计算优势通道特征参数是问题的关键。全面考虑优势通道的特点,将优势通道分为大孔道、强高渗条带、弱高渗条带三类。在分析优势通道的形成控制因素和表现特征基础上,从油水井出发,利用多指标综合评判方法确定各井层的优势通道值。在Petrel建模软件中,建立优势通道场,预测井间优势通道值,依据油水井优势通道值及其连通情况,确定各类优势通道的分布位置和方向。并采用"相控"方法计算各类优势通道的孔隙度、渗透率和孔隙体积等特征参数,从而为油田确定优势通道堵剂用量和封堵颗粒大小提供直接依据。
With long-term water-flooding development,a fixed water channel will be formed in the high permeability sandstone reservoir,resulting in a large number of ineffective water circulation.In order to improve the injection effect,the water channel must be plugged.And judging the water channel position and computing its parameters accurately is the key to the problem.On the basis of considering the dominant channel characteristics,the water channel is divided into channels with large pores,strong high permeability zone,weak high permeability zone.After analyzing its formation controlling factors and performance,according to the oil and water wells,the well layer channel value is determined by the multi index comprehensive evaluation method.With Petrel modeling software,dominant channel field is established,and channel value between wells is predicted.According to wells channel value and its connectivity,position and direction of all types water channels is determined.Using the 'phased control'method,the porosity,permeability and pore volume are calculated.And the research will instruct oil channel blocking agent dosage and plugging particle size.
出处
《新疆石油天然气》
CAS
2012年第2期50-53,3+2,共4页
Xinjiang Oil & Gas
关键词
优势通道
多指标综合评判
Petrel建模
特征参数
dominant water channel,multi index comprehensive evaluation,Petrel modeling,characteristic parameters
