西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (6): 73-78.

• 地质勘探 • Previous Articles     Next Articles

Study on True or False Carbonate Reservoir Recongnition Methods Basedon Well Logging in Tarim Oilfield

Sima Liqiang1, Zhang Fengsheng1，2, Zhao Ran3, Yang Hongpeng1   

  1. 1. School of Resource and Environment，Southwest Petroleum University，Chengdu，Sichuan 610500，China2. Oil Gas Evaluation Centre of CPL，Xi’an，Shaanxi 710021，China3. Research Institute of Exploration and Development，Northwest Oilfield Company，Urumqi，Xinjiang 830011，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-12-01 Published:2012-12-01

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Abstract: The fracture and cave reservoir of Ordovician formation in area 12 in Tahe Oilfield has a strong heterogeneity，and
complex spatial structure of reservoir which highly develops pores，holes，and fracture is developed is complex. There are many
layers which have the similar characteristics of reservoir in the Ordovician formation in Tahe Oilfield，but they turn out to be
the false reservoir for the test oil is dry layers. If these false reservoirs are not analyzed and removed，it is difficult to accurately
identify the reservoir. What’s more，it will cause the erroneous interpretation of well logging and the direct economic losses of
oil test and production. Thus，how to identify true or false reservoir with log data becomes the key of reservoir evaluation in
Tahe Oilfield. In this paper，we sum up the log response characteristics of true and false reservoir in area 12 in Tahe Oilfield，
and establish the identified patterns of true or false carbonate reservoir with well logging，FMI and core data，which reduces
the wrong and omission reservoir identification to improve the accuracy of reservoir logging evaluation.

Key words: carbonate rock, log response characteristics, true or false reservoir, reservoir identification