Lithologic Reservoirs ›› 2008, Vol. 20 ›› Issue (4): 118-122.doi: 10.3969/j.issn.1673-8926.2008.04.022

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Logging evaluation for organic reef reservoir of Changxing Formation of Gaofengchang structure in eastern Sichuan

LI Lianxin1，HU Hong2，LUO Zesong3   

  1. 1. Department of Engineering and Monitoring， Chongqing Gasfield， PetroChina Southwest Oil & Gasfield Company， Chongqing 400021， China； 2. Logging Company， Chuanqing Drilling Engineering Company， Chongqing 400021， China； 3. Tianchi Company， Chuanqing Drilling Engineering Company， Chongqing 400021， China
  • Online:2008-12-15 Published:2008-12-15

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Abstract:

Gaofengchang structure is one of the main gas fields in the east of Sichuan. The organic reef reservoir of Changxing Formation found recently is regarded as the highest quality reservoir in Gaofengchang. In the early stage of the exploration, a great quantity of high quality logging data were obtained by using advanced logging instruments. Based on these data, the reservoir division standards, fluid property, productivity prediction of single well of Gaofengchang organic reef reservoirs are analyzed, and the relevant evaluation methods are proposed, which provides foundation for the further development of Gaofengchang organic reef reservoirs.

Key words: Hilbert-Huang transform, array acoustic wave, Hilbert energy spectrum

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