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Research On Sedimentary, Reservoirs And Nonstructural Traps Of Carboniferous-upper Devonian In The Central Tarim Area

Posted on:2007-09-12Degree:DoctorType:Dissertation
Country:ChinaCandidate:M H ZhuFull Text:PDF
GTID:1100360185486709Subject:Mineral prospecting and exploration
Abstract/Summary:PDF Full Text Request
The Central-Tarim area is rich in oil and gas with the characteristics of multiple source series of strata and multiple reservoir layers. So far commercial hydrocarbon reservoirs have been discovered within the low-arch belt and on the north edge of the Central-Tarim area. Therefore, this region is a promising zone for the future petroleum exploration. However, the exploration and study projects that have been undertaken by SINOPEC remain at lower degree in this region. Thereby, it is necessary to systematically understand and summarize the precursors' achievements and the basic petroleum geology conditions in this region, in order to achieve new breakthrough in the exploration for petroleum ,and provide favorable blocks for future exploration in this area.In this paper, on the basis of the detailed researches of the regional geological setting and sequence development, guided by the basic theory of sequence stratigraphy and combined with the synthetic analyses of core , well log, and seismic data, the classification and correlation of the sequence stratigraphy by using the integration of well and seismic data were performed for the target intervals in the area. And this paper also studys in detail the sequence stratigraphic frameworks, sedimentary facies, paleo-geography, diagenesis and reservoir characteristics. Based on these research, the favorable exploration areas have been evaluated. The conclusions of this paper are as bellow:With the analysis of drilling results, well log data , seismic tracing and individual well depositional facies analysis ,Six third level sequence stratigraphy have been identified. Among them, 1 is in Donghe Sandstone, 5 is in Carboniferous, and the model of sequence stratigraphy framework has been established.With summarizing the characters of Donghe sandstone seismic reflection and drilling stratigraphy, the limits of the distribution of the Donghe sandstone are redelimited and the new possible blocks containing Donghe sandstone are identified.
Keywords/Search Tags:The Central-Ttarim area, sequence stratigraphy, sedimentary system, diagenesis, reservoir characteristics
PDF Full Text Request
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