Application of prestack simultaneous inversion to the prediction of carbonate reservoirs

WANG Ping; JIANG Ruizhong; WANG Gongchang; LIANG Yu

doi:10.3969/j.issn.1673-8926.2013.02.010

Lithologic Reservoirs >

2013 , Vol. 25 >Issue 2: 60 - 64

DOI: https://doi.org/10.3969/j.issn.1673-8926.2013.02.010

Application of prestack simultaneous inversion to the prediction of carbonate reservoirs

WANG Ping ,
JIANG Ruizhong ,
WANG Gongchang ,
LIANG Yu

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PetroChina Hangzhou Research Institute of Geology， Hangzhou 310023， China

Online published: 2013-04-20

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Abstract

The reservoir at the top of Leikoupo Formation in Central Sichuan Basin has the characters of low porosity and low permeability. Well log data shows that the P-impendence of gas-bearing dolomites is similar with tense limestone. Therefore, traditional method is incapable to discriminate porous dolomite and tense limestone. For resolving this problem, first, this paper conducted sensitivity analysis by using log cross-plot technique to find out rock physical parameters which are sensitive to reservoir and fluids, and then calculated the sensitive parameters such as λρ, μρ and vP/vS by pre-stack simultaneous inversion and predicted the favorable reservoirs. The results fit well with the drilling data, which shows that this method is feasible in complex carbonate reservoir prediction.

Key words： low salinity; water flooding; ion exchange; wettability; development tendency

Cite this article

WANG Ping , JIANG Ruizhong , WANG Gongchang , LIANG Yu . Application of prestack simultaneous inversion to the prediction of carbonate reservoirs[J]. Lithologic Reservoirs, 2013 , 25(2) : 60 -64 . DOI: 10.3969/j.issn.1673-8926.2013.02.010

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