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Yuanlongsi Region In Ganguyi Oil Field Chang 6 Reservoir Accumulation And Favorable Area

Posted on:2017-03-21Degree:MasterType:Thesis
Country:ChinaCandidate:L Q ZhaoFull Text:PDF
GTID:2180330503474908Subject:Mineralogy, petrology, ore deposits
Abstract/Summary:PDF Full Text Request
This Dissertation based on Sequence stratigraphy, Sedimentary petrology, Oil geology and other related disciplines theory and research methods as guides. By the data of 63 longing in Yuanlongsi region. Using each element from point to line, line to plane(single well-conneted wells-plan) to compilantion, and constantly modify. Carrying out chang 6 of Yanchang Formation of stratigraphic division and correlation, oil field structure and micro structure, sedimentary facies and sedimentary microfacies distribution regularity, reservoir characteristics, reservoir formed style and oil enrichment regularity. Comprehensive geological evaluation and favorable block prediction.The analysis show that Yuanlongsi region of Ganguyi oil field located in Yanan delta front. The channel sand are widely distributed in the region, which is the skeleton sand body of the reservoir. The river channel is SW-NE distribution, and the longitudinal direction is the single sand body, the sand body in the direction of the main channel is good. Large area distribution of channel sand bodies in the plane, small area of fine sediment in the river channel. Yuanlongsi region’s structural feature is a gently west monocline, dipangle is less than 1 degree, internal structure is relatively simple, there are some small swell and depression that is from differential compaction. Overall, this region has a two swell and one depression structure. Studing on the factors of sand body distribution, sedimentary facies,mudstone thickness, layer roof structure. Finally we think that the area is dominated by lithologic petroleum control, small nose structure, petroleum are mainly distributed in the diversion channel and underwater channel, in the chang 6 reservoir group, a total of 8favorable block were selected.
Keywords/Search Tags:Yanchang Formation, sedimentary facies, enrichment laws of oil reservoirs, favorable area prediction
PDF Full Text Request
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