Case Study: The Use of Downhole Control Valves To Sustain Oil Production From the First Maximum Reservoir Contact, Multilateral, and Smart Completion Well in Ghawar Field
- Saeed Mohammed Al-Mubarak (Saudi Aramco) | Tony Reuben Pham (Saudi Aramco) | Sultan S. Shamrani (Saudi Aramco) | Muhammad Shafiq (Schlumberger)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- November 2008
- Document Type
- Journal Paper
- 427 - 430
- 2008. Society of Petroleum Engineers
- 5.6.11 Reservoir monitoring with permanent sensors, 3.3.4 Downhole Monitoring and Control, 5.8.7 Carbonate Reservoir, 1.6.7 Geosteering / Reservoir Navigation, 3.3.1 Production Logging, 1.6 Drilling Operations, 5.6.4 Drillstem/Well Testing, 3.3 Well & Reservoir Surveillance and Monitoring, 2.3 Completion Monitoring Systems/Intelligent Wells, 4.1.5 Processing Equipment, 4.1.2 Separation and Treating
- smart completions, maximum reservoir contact (MRC) wells, downhole control valves
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This paper describes a case study that details the planning, completion, testing, and production of the first maximum reservoir contact (MRC), multilateral (ML), and smart completion (SC) deployment in Ghawar Field, Saudia Arabia.
A well was drilled and completed as a proof of concept. It was set up as a trilateral and was equipped with an SC that encompassed a surface-remotely-controlled hydraulic-tubing-retrievable advanced system coupled with a pressure- and temperature-monitoring system.
SC provides isolation and downhole control of commingled production from the laterals. The well was managed to improve and sustain oil production by eliminating water production by use of the variable-positions flow-control valve. Monitoring the rate and the flowing pressure in real time allowed for optimal well production.
The appraisal and acceptance portions of the completion process were achieved when this well was completed, put on production, and tested. The concept was approved when the anticipated benefits were realized during monitoring of the performance of the well.
Leveraged knowledge from this pilot has provided an insight into SC capabilities and implementation. Moreover, it has set the stage for other developments within Saudi Aramco.
Haradh forms the southwest portion of the Ghawar oil field, approximately 80 km onshore from the Arabian Gulf, in the Eastern Province of Saudi Arabia (Fig. 1). Haradh field consists of three increments: The initial production started in May 1996 with Increment-1, followed by Increment-2 and -3 in April 2003 and January 2006, respectively.
Increment-1 was developed initially by use of mainly vertical wells, while Increment-2 was developed with horizontal wells. The subsequent MRC/ML wells and SC installations in Increment-2 were part of a proof-of-concept project to test and evaluate the impact of these technologies on reservoir and well performance and on overall reservoir-management strategies. As a result of the proof-of-concept project, Increment-3 was developed with MRC/ML wells with SCs.
Modeling was used extensively to illustrate the potential benefits of the incremental expenditure of MRC/ML wells with SCs vs. conventional completions (Afaleg et al. 2005; Mubarak et al. 2007). Several authors quantified potential gains from the use of such wells and completions in field developments (Yeten et al. 2002; Saleri et al. 2006).
Haradh-A12 is the first MRC/ML well to be equipped with SC in Ghawar field. It was drilled and completed as a trilateral selective producer with a surface-controlled variable multipositional hydraulic system.
This paper discusses a closed-loop approach that led to efficient realtime production optimization.
|File Size||797 KB||Number of Pages||4|
Afaleg, N.I., Pham, T.R., Otaibi, U.F., Amos, S.W., and Sarda S. 2005. Design and Deployment of MaximumReservoir Contact Wells With Smart Completions in the Development of aCarbonate Reservoir. Paper SPE 93138 presented at the SPE Asia Pacific Oiland Gas Conference and Exhibition, Jakarta, 5-7 April. doi:10.2118/93138-MS.
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