摘要
TheCarboniferousandPre-CarboniferousformationsinLudong,Zhungarbasin,containfavorableoil/gasreservoirs.TheCarboniferousformations,however,arecomplexinstructureandexhibitlateralvariationsinlithology.SeismicreflectionsfromPre-Triassicformationsarepoorandthevolcanicreservoirsareverydifficulttoidentify.Theanalysisofphysicalpropertiesconcludedthatthemajortargetsinthisregion,i.e.,thetopoftheJurassicandCarboniferousformations,providedistinctdensityinterfaces.Thebasic,intermediateandacidvolcanicrockswerealsodifferentindensity,resultingindistinguishablegravityanomalies.Thedifferencesinmagnetisminthisregionexistednotonlybetweenthevolcanicrocksandclasticsedimentaryrocksbutalsoamongvolcanicrockswithdifferentcompositions.Allformationsandvolcanicrocksofdifferentlithologiespresentedhighandlowresistanceinterbeds,whicharecharacterizedbyregionaltrends.Themodelingstudydemonstratedthatnon-seismicintegratedgeophysicaltechniquesshouldbefeasibleinthisregion,especiaUythehigh-precisiongravity/magneticmethodscombinedwithlongoffsettransientelectromagneticsounding.
出版日期
2003年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
