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《毕业论文《底水油藏产能计算》》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、底水油藏在我国油藏屮占很大比例,其储量也相当丰富。除了有大量的天然底水油藏外,随着油田进入二次开采,含水量逐渐升高,更多油田的开发特征不断趋向于底水类型的油藏。面对国内油01普遍含水量升高的开发现状,对底水油藏的深入研究变得非常有意义。本文通过对国内外文献资料的查阅,分析了底水油藏的开采过程,并主要研究底水锥进的机理。对于底水油藏的产能计算,将水平井的三维渗流场近似的分解为内外两个渗流场,结合等值渗流阻力法得出临界产量的计算方法。根据底水锥进机理,研究了底水汕藏的控水理论。基础的方法是控制合理的生产压差,合理的产量,合理的射开程度。采用水平井
2、开采底水油藏,并对水平井做出一定的井下处理,包括变密度射孔、加封隔器等,能够很好的控制底水锥进。此外,在井厂采用油水分采的方法来控制生产压差,在油水界面建立人工隔板也能有效的控制底水的锥进。关键词:底水油藏;产能计算;水平井;控制水锥AbstractBottomwaterreservoirhasalargeproportioninourcountryanditsreservesarealsoabundant.Inadditiontoalargenumberofnaturalundergroundwaterreservoir,withtheoi
3、lfieldsintothesecondaryrecovery,watercontentgraduallyincreased,moreoilfieldsofthedevelopmentcharacteristicscontinuetotendtothetypeofbottomwaterreservoir.Tofacedomesticoilincreasingwateringeneraldevelopmentsituation,studyingbottomwaterreservoirdeeplybecomesverymeaningfulBase
4、dontheliteraturedataaccess,Thisarticleanalysisthebottomwaterreservoiroftheminingprocess,andthemainstudythemechanismofbottomwaterconing・Forthebottomwaterreservoircapacitycalculation,thehorizontalwellsofthree-dimensionalflowfieldsimilartothedecompositionofbothinternalandexter
5、nalflowfield,combinedwiththeequivalentflowresistancemethodtogetthecriticalyieldiscalculated.Accordingtobottomwaterconingmechanism,thisarticlestudythebottomwaterreservoirwatercontroltheoryControltheoryisareasonablebasisfortheproductionofpressure,areasonableyield,theextentrea
6、sonableshotopen.Horizontalwellsattheendofthewaterreservoirs,andundergroundhorizontalwelltomakecertaintreatment,includingvariabledensityperforating,sealingpacker,etc.,thismethodcancontrolledbottomwaterconingwell.Inaddition,undergroundoil-waterminingmethodsusedtocontrolthepro
7、ductionofpressureintheoil-waterinterfaceofanartificialbarriercaneffectivelycontrolthebottomwaterconing.Keywords:bottomwaterreservoir;productivitycalculation;horizontalwell;controlofwaterconing第1章概述11.1课题研究的目的和意义11・2底水油藏的研究现状11.3研究的主要内容2第2章底水油藏基础理论研究32.1底水油藏的概念32.2底水油藏的驱动规律4
8、2.3底水油藏的锥进机理42.4水平井在底水油藏屮的应用82・5本章才、结10第3章底水油藏产能计算的研究123.1低渗透油藏压裂水平井产能计算新方法123.2底水