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Research On Lithofacies Characteristics Of The Volcanic Rocks Of The Haerjiawu Group In Malang Sag Santanghu Basin

Posted on:2013-06-22Degree:MasterType:Thesis
Country:ChinaCandidate:Z X LiuFull Text:PDF
GTID:2230330374466084Subject:Mineral prospecting and exploration
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The article is Malang sag Haerjiawu group volcanic take heart well segment of rockheart for foundation, on rock heart of observation description, slice of mirror identification,combination seismic data, log data, logging data and other related information, analysis hasHaerjiawu group of volcanic rock sexual, volcano eruption cycles, and volcano eruptionperiod times and volcanic rock phase features, on volcanic rock phase for has planelithofacies distribution, painting out has plane phase distribution figure, and for has storagelayer favourable area with forecast. Research for this article in Malang sag provides a moredetailed theory for further exploration and development.Purpose of layers of volcanic rock is mainly basalt and basaltic volcanic breccia.Haerjiawu development group two eruptive cycle of four stages, namely C2h1-1, C2h(1-2), C2h2-1,and C2h2-2. Volcanic rock types can be divided into conduit of a volcano, invasion of theSecretary, sedimentary facies of the burst phase, overflow, volcano-sedimentary facies. Atpresent, the drilling revealed only broke out, sedimentary facies of the burst phase, volcanicsedimentary facies and conduit of a volcano. Summarized in three modes: first broke out thenoverflow has finally accepted the deposit, to overflow directly receive deposits andsedimentary finally accepted the overflow and then broke out. According to the standardevaluation parameters, combined with the Carboniferous volcanic rocks in the Malangdepression reservoir lithology, facies and reservoir types and characteristics, will be dividedinto4categories of volcanic rock reservoir: Class I is well reservoir, second class mediumreservoir, class III is poor reservoirs, reservoir of Ⅳ class is invalid. Study: developmentC2h1-2is the best of the Haerjiawu reservoir and C2h2-1, reservoir development was followedby C2h1-1 and C2h2-2.
Keywords/Search Tags:Malang sag, Haerjiawu group, volcanic lithology, Volcano eruption cycle and stages, volcanic facies
PDF Full Text Request
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