CAJ | 학술논문

目前蒸汽吞吐是稠油开发中最常用的生产方法，其开采机理主要为地层能量驱动、原油加热降黏、加热改善油水相对渗透性、液体热膨胀和近井地带解堵。但是，关于各种机理对蒸汽吞吐贡献的大小问题却鲜有论述。利用油藏数值模拟软件，采用正交试验分析方法进行研究的结果表明，这五种机理对吞吐采收率的贡献从大到小的顺序为地层能量驱动、原油加热降黏、近井地带解堵、液体热膨胀和加热改善油水相对渗透性，并且前两者起决定性的作用，是蒸汽吞吐能否取得较高采收率的关键。研究结果可指导设计人员高效地进行稠油油藏蒸汽吞吐开发设计，同时可指导研究人员利用数值模拟软件对蒸汽吞吐进行数值模拟。
목전증기탄토시주유개발중최상용적생산방법，기개채궤리주요위지층능량구동、원유가열강점、가열개선유수상대삼투성、액체열팽창화근정지대해도。단시，관우각충궤리대증기탄토공헌적대소문제각선유논술。이용유장수치모의연건，채용정교시험분석방법진행연구적결과표명，저오충궤리대탄토채수솔적공헌종대도소적순서위지층능량구동、원유가열강점、근정지대해도、액체열팽창화가열개선유수상대삼투성，병차전량자기결정성적작용，시증기탄토능부취득교고채수솔적관건。연구결과가지도설계인원고효지진행주유유장증기탄토개발설계，동시가지도연구인원이용수치모의연건대증기탄토진행수치모의。
Cyclic steam stimulation(CSS) is currently the most common production method in heavy oil reservoir .Its main mechanisms are formation elastic energy-driven ,crude oil viscosity reduction by heating ,improvement of oil-water relative permeability ,liquid thermal expansion and plug removal of near wellbore area .But the contribution of the mechanisms of cyclic steam stimulation is rarely discussed .By using reservoir simulation software and orthogonal test analysis ,how to realize CSS simulation was described by the current popular thermal recovery numerical simulation software , and showed that the importance sequence of these five kinds mechanisms contribution on CSS recovery was as follows :formation elastic energy , crude oil viscosity reduction by heating ,plug removal of near wellbore area ,liquid thermal viscosity and improvement of oil-water relative permeability .And the previous two played a decisive role ,which were the high recovery guarantee of CSS . Research findings could guide designers to efficiently design CSS in heavy oil reservoirs and to use simulation software for CSS .