Reservoir Pathway Identification in a Fractured Carbonate Heavy Oil Reservoir

Abstract

Reservoir Pathway Identification in a Fractured Carbonate Heavy Oil Reservoir M.. Samir; M.. Samir Scimitar Search for other works by this author on: This Site Google Scholar W.. Hassan; W.. Hassan Scimitar Search for other works by this author on: This Site Google Scholar M.. Omara; M.. Omara Scimitar Search for other works by this author on: This Site Google Scholar E.. Thabet; E.. Thabet Schlumberger Search for other works by this author on: This Site Google Scholar Y.. Abugreen; Y.. Abugreen Schlumberger Search for other works by this author on: This Site Google Scholar S.. Joshi S.. Joshi Schlumberger Search for other works by this author on: This Site Google Scholar Paper presented at the North Africa Technical Conference and Exhibition, Cairo, Egypt, February 2010. Paper Number: SPE-126135-MS https://doi.org/10.2118/126135-MS Published: February 14 2010 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Samir, M.. , Hassan, W.. , Omara, M.. , Thabet, E.. , Abugreen, Y.. , and S.. Joshi. "Reservoir Pathway Identification in a Fractured Carbonate Heavy Oil Reservoir." Paper presented at the North Africa Technical Conference and Exhibition, Cairo, Egypt, February 2010. doi: https://doi.org/10.2118/126135-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE North Africa Technical Conference and Exhibition Search Advanced Search Abstract The first production log in heavy oil in Egypt through y-tool, using a high capacity ESP pump, in an open hole completion was performed recently by Scimitar Production Company in Issaran heavy oil field. The objective of the job was to identify the source of water, evaluate the contributions from the different open hole zones and determine whether or not there is cross flow in this fractured heavy oil carbonate reservoir. These wells had originally not been completed with y-tool. Therefore a special y-tool with high capacity ESP was designed especially for Scimitar by Zenith to be able to log the wells under special dynamic conditions. This was the first application world wide of this y-tool, which was used as a temporary completion in the wells.Production logging (PL) was successfully carried out in 3 Issaran wells at different rates, to identify the high permeability (super-K) layers dominating production and calculate their pressure/PI. Likewise flow profiles were determined and high water producing layers identified. Shut in surveys were successful in detecting cross flowing layers. Calculated flow profile results matched well with surface measured rates.PL results had a significant effect upon the Issaran field development plan. Water was found to be produced from layers having resistivity up to 30 ohm-m. This led to an increase in the resistivity cutoff for hydrocarbon production and a reduction in water cut. Hydrocarbon producing zones were better identified and Scimitar decided to abandon open hole completions in future wells and go in for cased hole completions, in order both to control the water production as well as avoid breakthrough of injected steam.This paper describes the field and gives details on job planning, operations, results and way forward for field re-development. Keywords: production logging, producer, sagd, production control, oil sand, society of petroleum engineers, scimitar, water cut, reservoir, steam injection Subjects: Well & Reservoir Surveillance and Monitoring, Improved and Enhanced Recovery, Formation Evaluation & Management, Unconventional and Complex Reservoirs, Production logging, Thermal methods, Oil sand, oil shale, bitumen Copyright 2010, Society of Petroleum Engineers You can access this article if you purchase or spend a download.