Fracture identification and comprehensive evaluation of the parameters by Dual Laterolog data

H. Saboorian-Jooybari, M. Dejam, Z. Chen, P. Pourafshary

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

Quality and productivity of tight formations are heavily dependent on the degree of fracture development. In fact, hard and dense carbonate formations may not be considered as net pay without presence of fractures which conduct fluids towards wellbore. The evaluation of fractures is a key to reservoir effectiveness characterization for well drilling, completion, development and simulation of fractured reservoirs. Although new imaging technologies such as Formation Micro-Scanners and Imagers (FMS and FMI) provide the information of fracture properties (dip angle, porosity, aperture and permeability), image logs are very expensive and cannot be available in all wells. In this paper, fracture parameters are estimated using conventional Dual Laterolog (DLL) resistivity, which includes shallow (LLS) and deep (LLD) responses. This technique is based on electrical resistivity anomalies because of separation of shallow and deep laterolog curves. Fracture parameters that can be calculated by DLL include dip angle, aperture, porosity, permeability and cementation factor. The accuracy of the calculated parameters using DLL is validated by the results of FMI in one well in one of Iranian fractured reservoirs. Despite the image logs, the conventional DLL is routinely run in all of the drilled wells. This makes the constructed fracture model on the basis of DLLs more reliable than the corresponding model founded on limited and insufficient image logs. Furthermore, DLL has an advantage of much deeper evaluation of fractures in comparison with the immediate borehole investigation of image logs.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Middle East Unconventional Resources Conference and Exhibition 2015 - The Journey of Unconventional Resources: From Exploration to Successful Development
PublisherSociety of Petroleum Engineers
Pages349-359
Number of pages11
ISBN (Print)9781510800267
Publication statusPublished - 2015
EventSPE Middle East Unconventional Resources Conference and Exhibition 2015 - The Journey of Unconventional Resources: From Exploration to Successful Development - Muscat, Oman
Duration: Jan 26 2015Jan 28 2015

Other

OtherSPE Middle East Unconventional Resources Conference and Exhibition 2015 - The Journey of Unconventional Resources: From Exploration to Successful Development
CountryOman
CityMuscat
Period1/26/151/28/15

ASJC Scopus subject areas

  • Fuel Technology
  • Geochemistry and Petrology

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    Saboorian-Jooybari, H., Dejam, M., Chen, Z., & Pourafshary, P. (2015). Fracture identification and comprehensive evaluation of the parameters by Dual Laterolog data. In Society of Petroleum Engineers - SPE Middle East Unconventional Resources Conference and Exhibition 2015 - The Journey of Unconventional Resources: From Exploration to Successful Development (pp. 349-359). Society of Petroleum Engineers.