西南石油大学学报(自然科学版)

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Diagenetic Facies of Xujiahe Formation Member 4 Reservoir in Jinqiu
Area and the Logging Recognition

Lai Jin1,2, Wang Guiwen1,2, Zheng Yiqiong3, Huang Longxing4, Zheng Xinhua5   

  1. 1. College of Geosciences,China University of Petroleum(Beijing),Changping,Beijing 102249,China
    2. State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing),Changping,Beijing 102249,China
    3. No.1 Production Plant,Xinjiang Oilfield Company,PetroChina,Karamay,Xinjiang 834000,China
    4. International Department,CNPC Logging Co.,Ltd.,Changping,Beijing 102249,China
    5. Research Institute of Petroleum Exploration and Development,Tarim Oilfield Company,CNPC,Korla,Xinjiang 841000,China
  • Online:2013-10-20 Published:2013-10-20

Abstract:

The diagenesis,diagenetic minerals,diagenetic stage and diagenetic evolution sequence of Xujiahe Formation
Member 4 reservoir in Jinqiu Area are studied by the normal thin sections,casting thin sections,X-ray diffraction scanning
electron microscope analysis data. Five types of diagenetic facies are divided based on diagenesis,diagenetic minerals and
its impact on reservoir property:compaction tight facies,carbonate cementation tight facies,illite and montmorillonite mixed
layer filling facies,corrosion of unstable components facies and chlorite mat cementation facies. A series of logging curves
including compensated neutron logging,density logging,natural gamma ray,array induction log and spectral gamma-ray log,
are sensitive to the diagenetic facies. Actual log data of Well Jin1 were processed with the built logging identification model,
and the vertical distribution law of diagenetic facies in Well Jin1 is figured out by the well logging data. When the logging
recognition result of diagenetic facies in Well Jin 1 is corresponded with the reservoir physical property analysis data,it is
found that the layer with the corrosion of unstable components facies and chlorite mat cementation diagenetic facies are the
best,while the compaction tight facies illite and montmorillonite mixed layer filling facies are relatively worse,the reservoir
property of the carbonate cementation tight diagenetic facies are the worst.

Key words: diagenetic facies, logging recognition, Jinqiu Area, Member 4 of Xujiahe Formation, reservoir properity