EVALUATION AND STUDY OF FRACTURES FROM CORES AND IMAGE LOGS IN AHVAZ OIL FIELD

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GHOLI N.; HABIBNIA B.; MOHAMMADIAN R.

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Journal: JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY) Year:2011 | Volume:7 | Issue:3 Page(s): 245-254

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Title

EVALUATION AND STUDY OF FRACTURES FROM CORES AND IMAGE LOGS IN AHVAZ OIL FIELD

Author(s)

GHOLI N. | HABIBNIA B. | MOHAMMADIAN R. | Issue Writer Certificate

Keywords

FRACTURESQ2

IMAGE LOGSQ2

FORMATION MICRO IMAGER (FMI)Q2

CORESQ2

AHVAZ OIL FIELDQ2

SARVAK FORMATIONQ2

Abstract

The SARVAK FORMATION is among Bangestan group reservoirs which is located in the Dezful embayment, southwest of Iran. This Formation has two distinct facies in the folded Zagros belt. This reservoir is mainly carbonate and situated between Kazhdomi and Surgah Formations. For electrical imaging of the well, special technologies can be applied. FMI is among such technologies. It has proved to be useful in evaluation of lithology and fracture characterization (whether large, small, open or closed FRACTURES) in different minerals. This study focuses on the IMAGE LOGS in well #383 from SARVAK FORMATION, Ahvaz field. To perform electric logging in the wellbore, special tools such as Formation Micro Imager (FMI) are utilized. Resulted IMAGE LOGS are interpreted in an interval of 3417 to 4167 in SARVAK FORMATION. The results include determination of number and coordination of FRACTURES, relative fracture frequencies in different zones, slope and strike of layers and stresses in wellbore based on core analysis and image log (FMI) interpretations in the above mentioned interval. The results are obtained on the basis of structural trends, bore-hole break out and also description of CORES. In this well the largest fracture density was observed in zones D, E and F. The dip structure of SARVAK FORMATION is 7 degrees towards north and 30 degrees towards east. Three vuggy FRACTURES, 15 probable open FRACTURES with dip of 57 to 77 degrees and two strikes of West 25 East (S25W) -East 25 North (N25E) and East 75 North (N75E) -West 75 North (N75W) were detected. In addition 14 closed FRACTURES with dip /slope of 52 to 80 degrees and three strikes of west 75 North (N75W) -East 75 South (S75E), East 25 South (S25E) -West 25 North (N25W) and West 60 South (S60W) -East 60 North (N60E) were identified in this Formation.

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APA: Copy

GHOLI, N., HABIBNIA, B., & MOHAMMADIAN, R.. (2011). EVALUATION AND STUDY OF FRACTURES FROM CORES AND IMAGE LOGS IN AHVAZ OIL FIELD. JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY), 7(3), 245-254. SID. https://sid.ir/paper/127042/en

Vancouver: Copy

GHOLI N., HABIBNIA B., MOHAMMADIAN R.. EVALUATION AND STUDY OF FRACTURES FROM CORES AND IMAGE LOGS IN AHVAZ OIL FIELD. JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY)[Internet]. 2011;7(3):245-254. Available from: https://sid.ir/paper/127042/en

IEEE: Copy

N. GHOLI, B. HABIBNIA, and R. MOHAMMADIAN, “EVALUATION AND STUDY OF FRACTURES FROM CORES AND IMAGE LOGS IN AHVAZ OIL FIELD,” JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY), vol. 7, no. 3, pp. 245–254, 2011, [Online]. Available: https://sid.ir/paper/127042/en

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