Oil & Gas Geology ›› 2005, Vol. 26 ›› Issue (5): 598-604.doi: 10.11743/ogg20050507

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Research achievements and exploration direction in Tarim basin

Yu Renlian1,2,3, Yan Xiangbin4, Jin Xiaohui4, Li Tiejun4, Zhang Tao4   

  1. 1. Department of Geology, Northwest University, Xi'an;
    2. Geology and Geophysics Research Institute, Chinese Academy of Sciences, Beijing; 3.Northwest Company, SINOPEC, Urumqi;
    4. Exploration & Production Research Institute, SINOPEC, Beijing
  • Received:2005-07-21 Online:2005-10-25 Published:2012-01-16

Abstract:

Petroleum exploration practices and tackling key technical problems have improved the development of reservioring theories in marine carbonates in Tarim basin and that in foreland basin.As for reservoiring theory in marine carbonates,the new understandings include the followings: palaeohighs and their slope zones adjacent to the major source rocks are the favorable locations or zones for hydrocarbon enrichment;faults and unconformities are the major pathways for hydrocarbon migration and accumulation and the favorable reservoiring condition;good reservoirs composed of multi-cycle karsts and structural fissures are the crux of hydrocarbon enrichment as well as high and stable productions;good seals,multistage reservoiring and later adjustment are important factors for preservation of oil/gas reservoirs and the formation of complex oil and gas accumulations.As for reservoiring theory in foreland basin,the new advancements are as follows: faults passing through source rocks would play an important role in linking source rocks with reservoirs;the widely developed structural traps,good seal and late tectonic activities would have important control on reservoiring.The development and perfection of reservoiring theories have provided distinct guidance to exploration in Tarim basin: Akkule uplift,Yakela faulted uplift,Tazhong palaeohigh,Hetianhe palaeohigh,Guchengxu palaeohigh and the southern edge of Kuqa depression are the favorable areas for exploring large and medium oil/gas fields;while the southern part of Bachu uplift,Kongquehe slope and deep strata in the craton basin are the important domains that are worth to study and to explore.

Key words: reservoir type, reservoiring mechanism, exploration direction, Tarim basin

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