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1、2011年2月大慶石油地質(zhì)與開發(fā)Feb..2011第3O卷第1期PetroleumGeologyandOilfieldDevelopmentinDaqingVo1.30No.1DoI:10.3969/J.ISSN.1000—3754.2011.01.020低滲氣藏儲(chǔ)層應(yīng)力敏感性原因及巖石變形機(jī)制向祖平陳中華謝峰張箭肖文聯(lián)(1.中石化西南油氣分公司勘探開發(fā)研究院,四川成都610086;2.中石油西南油氣田公司勘探開發(fā)研究院四川成都610081;3.兩南石油大學(xué)油氣藏地質(zhì)及開發(fā)工程國家重點(diǎn)實(shí)驗(yàn)室,四川成都610500)摘要:低滲致密氣藏由于其自身的地質(zhì)特征,在衰竭式開發(fā)過程中表現(xiàn)出較強(qiáng)的儲(chǔ)層滲透率
2、應(yīng)力敏感性,其對(duì)氣藏開發(fā)效果的影響已有較多學(xué)者研究,但關(guān)于引起儲(chǔ)層應(yīng)力敏感性的內(nèi)在原因和控制巖石變形的機(jī)制卻鮮有研究。在有效應(yīng)力理論及實(shí)驗(yàn)研究基礎(chǔ)上,從儲(chǔ)層介質(zhì)類型、巖石組成、黏土礦物成分及含量、孔喉結(jié)構(gòu)特征及有效應(yīng)力定律等方面進(jìn)行研究,從深層次認(rèn)識(shí)清楚低滲氣藏儲(chǔ)層應(yīng)力敏感性原因及巖石變形機(jī)制,為該類氣藏制定合理的開發(fā)技術(shù)界限以及開發(fā)調(diào)整方案提供了有力的理論支撐。關(guān)鍵詞:低滲氣藏;應(yīng)力敏感;變形機(jī)制;有效應(yīng)力;響應(yīng)曲面法中圖分類號(hào):TE311文獻(xiàn)標(biāo)識(shí)碼:B文章編號(hào):1000—3754(2011)01-0103-04RESERVoIRSTRESSSENSITIVITYREASoNANDRoCKD
3、EFoRMATIoNMECHANISMoFLoWPEIEABILITYGASRESERVoIRXIANGZuping,CHENZhonghua,XIEFeng,ZHANGJian,XIAOWenlian(1.ResearchInstituteofPetroleumExplorationandDevelopmentofSouthwestPetroleumCompany,Sinopec,Chengdu610086,China;2.ResearchInstituteofPetroleumExplorationandDevelopmentofSouthwestPetroleumCompany,CNPC
4、,Chengdu610081,China;3.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitationofSouthwestPetroleumUniversity,Chengdu610500,China)Abstract:Lowpermeabletightgasreservoirisshownstrongstresssensitivityofreservoirpermeabilityinthedeple.tiontypedevelopmentbecauseofitsgeologicalcharacteristics,atprese
5、nt,manyscholarshaveresearchedtheinflu—encetotheeffectsofgasreservoirdevelopment,buthardlyresearchedthereasonsresultedfromreservoirstresssen—sitivityandmechanismcontrolledrockdeformation.Basedontheeffectivestresstheoryandexperimentalresearch。thispaperstudiesreservoirmaterialtype,rockcomposition,claym
6、ineralcomponentandcontent,characteristicsofporethroatstructureandeffectivestressrule,andunderstandsthestresssensitivityandrockdeformati0nmecha—nismoflowpermeablegasreservoir,whichprovidethepowerfultheoreticalsupportforestablishingthereasonabledevelopmenttechniquelimitandplanofthistypeofgasreservoir.
7、Keywords:lowpermeablegasreservoir;stresssensitivity;deformationmechanism;effectivestress;resp0nse收稿日期:2010-05—09改回日期:2010-08—28基金項(xiàng)目:中國石油科技創(chuàng)新基金“含c0高含硫氣藏硫沉積預(yù)測模型及應(yīng)用研究”(2008D-5006-02-09)和中國石油天然氣集團(tuán)公司中青年創(chuàng)新基