Skip to Main Content
GEOREF RECORD

Predicting acoustic-wave velocities and fluid sensitivity to elastic properties in fractured carbonate formation

Xu Jingjing, Tan Maojin, Wang Xiaochang and Wu Chunping
Predicting acoustic-wave velocities and fluid sensitivity to elastic properties in fractured carbonate formation
Interpretation (Tulsa) (February 2017) 5 (1): SB69-SB80

Abstract

Estimation of S-wave velocity is one of the most critical steps for prestack seismic inversion. Based on the petrophysical model of fractured carbonate rocks, theoretical methods are firstly investigated for estimating P- and S-wave velocities in the presence of fractures. Then, the methods of calculating elastic properties in fractured carbonate rocks are discussed. The mineral concentration, total porosity, and fracture porosity from core X-ray diffraction and routine core measurements or log interpretation results are used to estimate the P- and S-wave velocities. In the given carbonate rock model, the elastic properties of carbonate rocks with different porosity and fractures are calculated. Two field tests prove that the proposed new method is effective and accurate. Furthermore, the model is useful for fluid identification, which is one of the most outstanding problems for carbonate reservoir description. The simulation results suggest that the larger the fracture porosity is, the easier fluid typing. In Tahe Oilfield, the elastic properties of different fluid zones indicate that bulk modulus and Young's modulus are more sensitive to fluid than shear modulus, the Lame constant, and Poisson's ratio.


ISSN: 2324-8858
EISSN: 2324-8866
Serial Title: Interpretation (Tulsa)
Serial Volume: 5
Serial Issue: 1
Title: Predicting acoustic-wave velocities and fluid sensitivity to elastic properties in fractured carbonate formation
Affiliation: China University of Geosciences, Beijing, China
Pages: SB69-SB80
Published: 201702
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 29
Accession Number: 2017-030484
Categories: Economic geology, geology of energy sources
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
N41°15'00" - N41°15'00", E84°00'00" - E84°00'00"
Secondary Affiliation: SINOPEC, CHN, China
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201718
Close Modal

or Create an Account

Close Modal
Close Modal