From Operations to Desktop Analysis to Field Implementation: Well and ESP Optimization for Production Enhancement in the Cliff Head Field
- Zulfiqar F. Dholkawala (Advanced Well Technologies Pty. Ltd.) | Simon B. Daniel (Roc Oil Co. Ltd.) | Bill J. Billingsley (Roc Oil Co. Ltd.)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- February 2012
- Document Type
- Journal Paper
- 52 - 66
- 2012. Society of Petroleum Engineers
- 3.1 Artificial Lift Systems, 4.1.2 Separation and Treating, 3.1.2 Electric Submersible Pumps, 3.2.8 Well Performance Modeling and Tubular Optimization, 5.5 Reservoir Simulation
- ESP optimization, interaction with well and reservoir performance
- 2 in the last 30 days
- 747 since 2007
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Understanding the integrated performance of complex artificially lifted wells on not normally manned (NNM), offshore platforms without invasive techniques represents a challenge not only to minimizing operating costs but also to optimizing production and thereby maximizing value. Often the analysis of such problems is hindered by the complex interactions between identified production constraints and by a lack of operating data.
The Cliff Head oil field (offshore Western Australia) is developed with an innovative coiled-tubing deployed-electrical-submersible-pump (CT-ESP) artificial-lift system. This paper describes the process by which ESP and well data, in conjunction with a well-performance-modeling software, have been used as a powerful tool to diagnose well-performance issues and optimize production. Production trends were created on the basis of real-time production data to understand ESP performance. Individual-well models were created to identify potential causes of declining performance--in this case, the use of an ESP performance-limiting factor (PLF) indicating deteriorating ESP performance because of solids buildup.
On the basis of the model results, chemical soaks were implemented on two production wells to remove flow restrictions within and around the ESPs. The treatments increased the oil-production rates by 17 to 48%.
Following a debottlenecking study, reservoir simulation in combination with detailed ESP-performance analysis concluded that total-field-production improvements of up to 50% were possible. Consequently, the next phase of field development will install larger-capacity ESPs.
This paper outlines how field data and desktop tools were combined successfully to monitor and diagnose well-performance issues to deliver material production enhancements.
|File Size||6 MB||Number of Pages||15|
Al-Siyabi, I., Al-Sharji, H., and Al-Bimani, A. 2007. Focus ESP Surveillancein Sensitive Conditions: Benefits and Challenges. Presented at the 2007Electrical Submersible Pump Workshop, The Woodlands, Texas, 25-27 April.
Daniel, S. and Roberts, J. 2008. The Cliff Head Field Development--FlowAssurance and Production Chemistry Challenges in a Marginal Field Context.SPE Proj Fac & Const 4 (2): 19-26. SPE-115612-PA. http://dx.doi.org/10.2118/115612-PA.
Hasket, C.E. and Tartera, M. 1965. A Practical Solution to the Problem ofAsphaltene Deposits--Hassi-Messaoud Field, Algeria. J Pet Technol 17 (4): 387-391. SPE-994-PA. http://dx.doi.org/10.2118/994-PA.
Molotkov, R.V., Stephenson, G.B., and Seale, S.R. 2008. ESP Monitoring andDiagnosis Enables Operational Efficiency. Paper SPE 115340 presented at the SPERussian Oil and Gas Technical Conference and Exhibition, Moscow, 28-30 October.http://dx.doi.org/10.2118/115340-MS.
von Albretch, C., Díaz, B., Salathiel, W.M., and Nierode, D.E. 1980.Stimulation of Asphaltic Deep Wells and Shallow Wells in Lake Maracaibo,Venezuela. Proc., 10th World Petroleum Congress, Bucharest, Romania,9-14 September, Vol. 3, 55-62.
Way, C., Daniel, S., Bird, E., Jordan, J., Guatelli, V.J., and Bettridge,J.M. 2007. Cliff Head Intelligent Completion With Coiled Tubing DeployedESPs—Increased Production, Reduced Life-Cycle Cost. Paper SPE 108381 presentedat the Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, 30October-1 November. http://dx.doi.org/10.2118/108381-MS.