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Study On Petroleum Evaluation And Exploaration Target In Zhuanhai Buried-hill

Posted on:2008-08-05Degree:MasterType:Thesis
Country:ChinaCandidate:B W YangFull Text:PDF
GTID:2120360218963416Subject:Mineral prospecting and exploration
Abstract/Summary:PDF Full Text Request
According to cross section processing results of three dimention (3 D)seismic data, imaging logs, core analysis, well production,well compeletionin Zhuanghai area, firstly, we have studied the structure characters, andgeometric shape of the faults and characters of the structure evolvement withprior inteprataion principle of the reverse fault and structure analysis methodof the formations. The Paleozoic structure of butied hill was divided into fourburied hill blocks by two normal faults and four reverse faults, such as Lao30 block, Zhuangu 46 block, ZhuangguX47 block and Zhuanhai 10 block.Generally, the rift system controls formmation of the traps, improvment ofphysical properties of the resevoirs and the motion of oil gas. Then, afteranalysis of reservoirs characters, we have found that the reservoirs space aremainly vugs, fractures and other secondary pores, which are refilled seriously,those unrefilled and eroding fractures is mainly slight ones. Theses structuralfractures often have high dips with the strike of west east, which aredevepled in Indo Chinese epoch, Yanshan epoch,Himalayan orogenicepoch as well as the eroding vugs. Finally, at base of the research on structurecharaters and reservoirs characters, we have analysed and studied all kinds offactors of oil and gas system in Zhuanghai buried hill, and propose furtheradvantageous exploration targets. The oil and gas distribution in the studyarea have some characters of nearing oil source and faults.These reservoirsare classified as three types such as inside complex reservoir, inside stratifiedreservoir and weathering shell reservoir. Moreover, the oil source condition, reservoir development and fault system are primary facors of reservoirenrichment and high pay. Furthermore, three further advantageousexploration targets are proposed. All research fruits above will give definitdirection for further exploration and exploitation of the target area.
Keywords/Search Tags:Zhaunhai buried hill, Structural features, Fracture, Hydrocarbon Accumulation
PDF Full Text Request
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