西南石油大学学报(自然科学版)
西南石油大學學報(自然科學版)
서남석유대학학보(자연과학판)
JOURNAL OF SOUTHWEST PETROLEUM UNIVERSITY(SEIENCE & TECHNOLOGY EDITION)
2014年
3期
127-132
,共6页
低电阻率%低渗透%数值模拟%适应性评价
低電阻率%低滲透%數值模擬%適應性評價
저전조솔%저삼투%수치모의%괄응성평개
low-resistance%low-permeability%numerical simulation%adaptability evaluation
针对南海西部海域油田“三低”特征(即电阻率低、含油饱和度低和渗透率低),在开发过程中由于束缚水饱和度高和泥质含量高,水敏性强,面临注水困难和地层能量补充的问题。在充分调研国内外CO2驱室内试验研究和注气开发适应性评价的基础上,以油藏为例,完成了CO2注气室内试验和油藏数值模拟研究,并在此基础上进行了CO2注气开发适应性评价。通过数值模拟研究,对衰竭式开发、连续注气和WAG水气交替注入两种驱替方式进行了方案设计和对比分析,结果表明该油田CO2注气开发具有很好的适应性,WAG水气交替注入能进一步提高油田开发的采收率。
針對南海西部海域油田“三低”特徵(即電阻率低、含油飽和度低和滲透率低),在開髮過程中由于束縳水飽和度高和泥質含量高,水敏性彊,麵臨註水睏難和地層能量補充的問題。在充分調研國內外CO2驅室內試驗研究和註氣開髮適應性評價的基礎上,以油藏為例,完成瞭CO2註氣室內試驗和油藏數值模擬研究,併在此基礎上進行瞭CO2註氣開髮適應性評價。通過數值模擬研究,對衰竭式開髮、連續註氣和WAG水氣交替註入兩種驅替方式進行瞭方案設計和對比分析,結果錶明該油田CO2註氣開髮具有很好的適應性,WAG水氣交替註入能進一步提高油田開髮的採收率。
침대남해서부해역유전“삼저”특정(즉전조솔저、함유포화도저화삼투솔저),재개발과정중유우속박수포화도고화니질함량고,수민성강,면림주수곤난화지층능량보충적문제。재충분조연국내외CO2구실내시험연구화주기개발괄응성평개적기출상,이유장위례,완성료CO2주기실내시험화유장수치모의연구,병재차기출상진행료CO2주기개발괄응성평개。통과수치모의연구,대쇠갈식개발、련속주기화WAG수기교체주입량충구체방식진행료방안설계화대비분석,결과표명해유전CO2주기개발구유흔호적괄응성,WAG수기교체주입능진일보제고유전개발적채수솔。
In view of the“three low”characteristics(i.e.,low resistivity,low oil saturation and low permeability)of Oilfield in western South China Sea,water injection and energy supplement difficulties exist in the development process due to high irreducible water saturation and high shale content and strong water sensitivity. Based on laboratory researches and adaptability evaluations of gas injection of CO2 at home and abroad,and by taking reservoir as an example,laboratory experiment of CO2 gas injection and reservoir numerical simulation are finished,and theCO2 gas injection development adaptability evaluation is done on this foundation. A comparison among the depletion type development,continuous gas injection and WAG displacement through numerical simulation,the result shows CO2 gas injection development has good adaptability,and WAG can further improve the oil recovery of oilfield development.