非均质油藏负压钻井渗透率剖面计算模型参数敏感性分析  

Underbalanced Drilling Horizontal Permeability Estimation Model parameters sensitivity analysis

作　　者：左东华[1] 

机构地区：[1]中国石化股份公司胜利油田分公司物探研究院

出　　处：《内蒙古石油化工》2009年第15期77-79,共3页Inner Mongolia Petrochemical Industry

摘　　要：负压钻井减小甚至避免钻井液侵入污染,因此近年来负压钻井技术越来越得到重用。在钻井工程中,为准确调整钻井液配比以确保井底压力低于油藏压力,需准确计算井筒流入的液量,这使得水平井钻井过程中渗透率剖面的估算尤为重要。地层非均质性对渗透率剖面计算影响较大,本文对非均质油藏参数进行了敏感性分析。Because of its effectiveness in reducing or eliminating the impact of drilling fluid invasion, underbalanced drilling technology has gained popularity especially in horizontal wells. To ensure the bot- tom hole pressure is maintained below the reservoir pressure ,to adjust the gas fraction of the drilling fluid and to accurate inflow calculations, therefore, arises in order to have a correct estimation of the reservoir permeability. Formation parameters have a big effect on the calculating model. This article, focus on reservoir permeability and its variation along the length of the wellbore, made a sensitive analysis on the related parameters.

关 键 词：水平井 渗透率剖面 分段射孔 压力降 射孔长度 

分 类 号：TE343[石油与天然气工程—油气田开发工程] V279[航空宇航科学与技术—飞行器设计]