声波测井岩石波速统计分析

第29卷增刊物探化探计算技术2007年10月收稿日期:2007-06-30:10011749(2007)(1)014404袁志亮1,2,吴治平2(1.中国地质大学,北京100083;2.中国地质科学院地球物理地球化学勘查研究所,廊坊065000):通常不同岩性的声波速度不同,同一岩性因裂隙发育和风化程度不同,声波速度也不相同声波测井技术就是依据岩层的这一特性,划分不同岩层及岩层的风化破碎程度这里对某铁路线的勘测的声波测井结果进行统计分析,给出了测区钻孔揭露的主要岩石较完整状态的声波波速统计值和异常发育概率统计:声波测井;岩石;速度;概率统计:P6315:A0,,49,3925m,11.1:(1)(2)(3)(4)(5)(6),(1)1ZD1018孔声波实测曲线Fig.1AacousticloggingcurveforBoreholeZD-10181.21();1测区内主要岩层的声波速度统计表Tab.1Thestatisticvaluesofacousticvelocitiesforthemaintypesofrocksinthesurveyarea(m)(m)(%)(m/s)(m/s)589.3195.733.25222767318.132.810.351751014620.5214.834.650501049364.836.4105534634129.321.416.64376737288.763.722.14382103314455.638.64174755157.311.97.65544520255.776.8304386109219.34.121.2436878040.327.367.74368780189.1128.467.93770600204.681.339.756401171125.651.440.92973718156.7146.793.6279464461.61727.64160813,121,158%2,3000m/s110%1049m/s,2灰岩声波速度概率曲线Fig.2Aprobabilitycurveofacousticvelocityforlimestone122,65%3,1092m/s,,3花岗片麻岩声波速度概率曲线Fig.3Aprobabilitycurveofacousticvelocityforgranitegneiss123,15%4,,,4450m/s5550m/s,967m/s492m/s,145增刊袁志亮等:声波测井岩石波速统计分析4白云岩声波速度概率曲线Fig.4Aprobabilitycurveofacousticvelocityfordolomite4450m/s,5550m/s967m/s492m/s,(3000m/s)17%,12437%5,619m/s,,,5页岩声波速度概率曲线Fig.5Aprobabilitycurveofacousticvelocityforshale12508%6,,813m/s,,6变粒岩声波速度概率曲线Fig.6Aprobabilitycurveofacousticvelocityforgranulite1264%7,,,2000m/s3910m/s,481m/s660m/s7膏溶角砾岩声波速度概率曲线Fig.7Aprobabilitycurveofacousticvelocityforointmentbreccia,2000m/s,3910m/s481m/s660m/s(3000m/s)21%,146物探化探计算技术29卷8主要岩层异常发育概率统计柱状图Fig.8Thehistogramofstatisticdevelopmentprobabilityofanomalyforthemainstrata28(=100%)8:;3:,:[1].[M].:,2004.[2]A.[M].:,1985.[3],,,.[J].,2005,27(1):16.[4]STEPHENPRENSKY.RecentDevelopmentsinLoggingTechnology[J].Petrophysics,2002,43(3):197.[5],,,.[J].,2005,9,20(3):786.[6],,.[J].,2004,4,1(2):136.[7],,.[J].,2003,6,18(3):229.[8].[D].:,1999.[9].[M].:,2001.[10],,,.-[J].,2006,28(2):93.:袁志亮(1964-),男,高级工程师,中国地质大学在读博士,主要从事地下物探综合应用研究工作147增刊袁志亮等:声波测井岩石波速统计分析teristicsofinterferencescommonlyencounteredincitiesandadoptcorrespondingmeasurestosuppressthem.Basedonourexperiencesofyears,thereasonablefieldprocedures,inviewofcomplicatedenvironmentsandspecificseismicandgeologicconditionsincities,havebeensummarized.Keywords:activefaul;tseismicreflectionmethod;characteristicsofinterferencewaves;casehistoryASEISMICMETHODOLOGYFORMINERALEXPLORATIONXUMingcai,GAOJinghua,CHAIMingtao,eta.l(InstituteofGeophysical&GochemicalExploration,CAGS,LangfangHebei065000,China).COMPUTINGTECHNIQUESFORGEOPHYSICALANDGEOCHEMICALEXPLORATION,2007,29(suppl):0138Aseismicmethodologyformineralexplorationhasbeenintroducedinthepaper,andwithrathergoodgeologicalresultssummarized.Itisindicatedthattheseismicreflectionisapplicablefordelineatingstrataboundsedimentaryoredepositsandorecontrolstructures,whiletheseismicscatteringwavescouldbeusednotonlytodetectbutalsotolocate,incombinationwithothergeophysicalandgeochemicalinformation,inhomogeneousbodiesrelatedtoorebodies.Keywords:seismicmethod;mineralexploration;orecontrolstructure;localinhomogeneousbodySTATISTICANALYSISOFROCKVELOCITYBYACOUSTICLOGGINGYUANZhiliang1,2,WUZhiping2(1.ChinaUniversityofGeosciences,Beijing100083,China;2.InstituteofGeophysicalandGeochemicalExploration,CAGS,LangfangHebei065000,China).COMPUTINGTECHNIQUESFORGEOPHYSICALANDGEOCHEMICALEXPLORATION,2007,29(suppl):0144Acousticvelocityisgenerallydifferentfromatypeofrockstotheother,evensoforthesametypeofrocksbecauseofdifferentdegreesoffracturingorweathering,soformingabasisforvelocityloggingtodelineategeologicallayersandtheirweatheringandfracturingdegrees.Astatisticanalysisoftheresultsofacousticloggingforarailwaybedinvestigationhasbeenmadeinthepaper,andgivingthestatisticvaluesofacousticvelocitiesanddevelopmentprobabilitiesofanomalyformaintypesoflessfracturedrocksintersectedbydrilling.Keywords:acousticlogging;rock;velocity;statisticalprobabilityANAPPLICATIONOFCROSSBOREHOLEACOUSTICWAVETOMOGRAPHYTOTHEDEVELOPMENTOFOILFIELDSMIHongze,LEIZhenying(InstituteofGeophysical&GeochemicalExploration,CAGS,LangfangHebei065000,China).COMPUTINGTECHNIQUESFORGEOPHYSICALANDGEOCHEMICALEXPLORATION,2007,29(suppl):0148Thetestresultsofcrossboreholeacoustictomographicsurveysfortwopairsofboreholes,BoreholesYang1112~Yang1113andBoreholesGang9721~Gang8711intheDagangOilFieldhavebeenpresentedinthepaper.Thedepthsofoilbearingbodiesshowninthetomogramsroughlycoincideswiththoseinterpretedfromgeologicalandwellloggingdata,withdeviationofonly0.8~1.6m.Theappearancesofoilbearingbodiescouldbemappedwiththetomography,indicatingthatthetomographictechnologyiseffectiveformappinglateraldistributionandthinningoutofoilbearinglayersandthereforeusefulforthedevelopmentandmonitoringofoilfields.Keywords:crossboreholeacoustictomographicsystem;sectorsurveywithfixedpoin;tinversionoftomographicdata;crossboreboleacoustictomogramDAMPINGCOEFFECIENTINDATAPROCESSINGFORCROSSBOREHOLEEMWAVETOMOGRAPHY-DETERMINATIONANDAPPLICATIONLUODejian,GAOWenli(InstituteofGeophysical&GeochemicalExploration,CAGS,LangfangHebei065000,China).COMPUTINGTECHNIQUESFORGEOPHYSICALANDGEOCHEM