超深井钻井液高温稳定机理与应用研究

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1、超深井钻井液高温稳定机理与应用研究(申请中国石油大学工学博士学位论文)。袋蓝学科专业：研究方向：博士生：指导教师：油气井工程油气井化学工程黄维安邱正松(教授)2007年4月StudyonHigh—temperatureStabilizationMechanismsandApplicationofUltra—deepWellDrillingFluidAbstractAimedatthepresentgordiantechnicalproblemsofchillingfluidsofhi曲temperatureandult

2、radeepwellinland，hightemperaturestabilizationmechanismsofwater-basedrillingfluidofhightemperatureandultradeepwellwerestudieddeeply．ThellthefluidlossadditiveHTP．1andviscosityreducerHTP-2withhightemperature但40。C)andsalttoleranceweredevelopedandfieldtestofthemwerec

3、onductedsuccessfullyinthescienceexploratorywellwithinlandhighestbottomholeternperaturetothisday．Contentofthispaperisthemainof“863”item“Studyonnewlyultra—deepwelldrillingfluidtechnologyunderhightemperatureandhighpressure”．Basedonthesum—upandanalysisofmaincharacte

4、risticof11i曲temperatureandultradeepwellwater-basedrillingfluid，thehiglltemperaturemechanismsofactionofwatef．basedrillingfluidwerestudiedbyinvestigatingtheeffectsofagingtemperature,pHvalueandbentonitecontentontheviseosity,yieldvalueandAPIfiltrationofbentoniteslur

5、ry．Basedonthemolecularstructurefeatureandrequirementofpolymeradditive晰tllllightemperatureandsalttoleranceandfundamentalprincipleofmacromoleculestructuraldesign．thefluidlOSSadditiveHTP一1andviscosityreducerHTP一2weredeveloped．Molecularstructurefeatureofthemwaschara

6、cterizedbyinfraredspectralanalysisandviscosimetry．Thecapacityofthemtoresisthightemperature．saltandCalciumisevaluatedthroughgravitationalthermalanalysis，aqueoussolutionintrinsicviseositymethodandultravioletlight-visiblelightphotometricmethodandprovedtobeverystron

7、gandoveroftypicalsimilarproductsfrominlandandoutland．Measurementresultsofadsorptionquantity,sizedistribution，colloidstability(infraredscanning)andpermeabilityandcompressibilityoffiltercakeshowthattheadsorptionofHTP．1onclayparticlesisveryfmn，HTP一1canimprovethesiz

8、egradingofparticlesindrillingfluid，build—upthesystemcolloidstabilityandrefo／'Inmudcakequality．ResultsofX-raydiffractionandmeasurementsofzetapotentialandgrainsizeindic