Inhibited Gas Stimulation To Mitigate Condensate Banking and Maximize Recovery in Cupiagua Field
- Carlos A. Franco (Qatar Petroleum) | Richard D. Zabala (Ecopetrol S.A.) | Jose Zapata (Ecopetrol SA) | Edgar Mora (Ecopetrol SA) | Oscar Botero (Ecopetrol SA) | Carlos Candela (Ecopetrol SA) | Andres Castillo (Ecopetrol SA)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- April 2013
- Document Type
- Journal Paper
- 154 - 167
- 2013. Society of Petroleum Engineers
- 4.1.2 Separation and Treating, 4.6 Natural Gas, 4.3.3 Aspaltenes, 3.2.3 Hydraulic Fracturing Design, Implementation and Optimisation, 4.1.4 Gas Processing, 5.2.1 Phase Behavior and PVT Measurements, 2.5.2 Fracturing Materials (Fluids, Proppant), 5.7.2 Recovery Factors
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Condensate banking has been identified as one of the most potentially damaging mechanisms affecting well productivity in Cupiagua Field. This gas-condensate giant field has reached an average recovery factor of 42%, with recovery values of approximately 60% in some layers of field. The mitigation of condensate banking phenomena, among the other important damaging mechanisms currently interacting along the entire productivity zones, has been one of the most relevant stimulation practices in the development strategy.
The mitigation of condensate banking led to optimization of common stimulation practices to recover the productivity of gas-condensate wells. Massive hydraulic fracturing and matrix stimulation with inhibited diesel and alcohol have been the most common practices implemented and optimized to mitigate condensate banking in Cupiagua field.
Because the field is being operated by Ecopetrol (as of June 2010), the mitigation of condensate banking was recognized as one of the most important stimulation challenges to be worked by the stimulation team. The effective mitigation of condensate banking is key to reaching and even exceeding the short- and long-term production targets set by Ecopetrol.
This paper describes all the engineering work carried out to implement a new stimulation technique based on the injection of inhibited dry gas. The performed laboratory job, the simulation runs, the engineering design, and the field results are clearly described in the paper, the preliminary results showing that a successful stimulation technique exists to remove and mitigate condensate banking. At the moment, this stimulation strategy has been focused on removing liquid saturation (condensate and water) and organic solids (especially asphaltenes) by incorporating alcohol and surfactants inside the gas stream. Future engineering work will address the incorporation of a chemical blend that can improve the gas-treatment life, thus reducing critical liquid saturation or/and reducing the size of no-mobile condensate rings.
|File Size||1 MB||Number of Pages||14|
Afidick, D., Kaczorowski, N.J., and Bette, S. 1994. ProductionPerformance of a Retrograde Gas Reservoir: A Case Study of the Arun Field.Presented at the SPE Asia Pacific Oil and Gas Conference, Melbourne, Australia,7-10 November. SPE-28749-MS. http://dx.doi.org/10.2118/28749-MS.
Ahmed, T., Evans, J., Kwan, R. et al. 1998. Wellbore LiquidBlockage in Gas-Condensate Reservoirs. Presented at the SPE Eastern RegionalMeeting, Pittsburgh, Pennsylvania, USA, 9-11 November. SPE-51050-MS. http://dx.doi.org/10.2118/51050-MS.
Al-Anazi, H.A., Solares, J.R., and Al-Faifi, M. 2005a. TheImpact of Condensate Blockage and Completion Fluids on Gas Productivity inGas-Condensate Reservoir. Presented at the SPE Asia Pacific Oil and GasConference and Exhibition, Jakarta, 5-7 April. SPE-93210-MS. http://dx.doi.org/10.2118/93210-MS.
Al-Anazi, H.A., Walker, J.G., Pope, G.A. et al. 2005b. ASuccessful Methanol Treatment in a Gas/condensate Reservoir: Field Application.SPE Prod & Oper 20 (1): 60-69. SPE-80901-PA. http://dx.doi.org/10.2118/80901-PA.
Ali, J.K., Butler, S., Allen, L. et al. 1993. The Influence ofInterfacial Tension on Liquid Mobility in Gas Condensate Systems. Presented atthe Offshore Europe, Aberdeen, 7-10 September. SPE-26783-MS. http://dx.doi.org/10.2118/26783-MS.
Bang, V.S.S., Yuan, C., Pope, G.A. et al. 2008. ImprovingProductivity of Hydraulically Fractured Gas Condensate Wells by ChemicalTreatment. Presented at the Offshore Technology Conference, Houston, 5-8 May.OTC-19599-MS. http://dx.doi.org/10.4043/19599-MS.
Barnum, R.S., Brinkman, F.P., Richardson, T.W. et al. 1995. GasCondensate Reservoir Behaviour: Productivity and Recovery Reduction Due toCondensation. Presented at the SPE Annual Technical Conference and Exhibition,Dallas, 22-25 October. SPE-30767-MS. http://dx.doi.org/10.2118/30767-MS.
Boom, W., Wit, K., Zeelenberg, J.P.W. et al. 1996. On the Useof Model Experiments for Assessing Improved Gas-Condensate Mobility UnderNear-Wellbore Flow Conditions. Presented at the SPE Annual Technical Conferenceand Exhibition, Denver, 6-9 October. SPE-36714-MS. http://dx.doi.org/10.2118/36714-MS.
Franco, C.A., Leal, J.A., and Smith, P.S. 2001. Identificationof Downhole Scales Using a Multi-Stage Stimulation Treatment. Presented at theInternational Symposium on Oilfield Scale, Aberdeen, 30-31 January.SPE-68306-MS. http://dx.doi.org/10.2118/68306-MS.
Franco, C.A., Restrepo, A., Acosta, L.G. et al. 2006. SDLA:Fighting Skin Damage in Colombian Fields--A War Story. Presented at theInternational Symposium and Exhibition on Formation Damage Control, Lafayette,Louisiana, USA, 15-17 February. SPE-98136-MS. http://dx.doi.org/10.2118/98136-MS.
Hoier, L., Cheng, N., and Whitson, C.H. 2004. Miscible GasInjection in Undersaturated Gas-Oil Systems. Presented at the SPE AnnualTechnical Conference and Exhibition, Houston, 26-29 September. SPE-90379-MS. http://dx.doi.org/10.2118/90379-MS.
Kumar, V. 2006. Chemical stimulation of gas condensatereservoirs: An experimental and simulation study. PhD dissertation. 2006. .PhD dissertation, The University of Texas at Austin, Austin, Texas (May2006).
Li, K. and Firoozabadi, A. 2000a. Experimental Study ofWettability Alteration to Preferential Gas-Wetting in Porous Media and ItsEffects. SPE Res Eval & Eng 3 (2): 139-149.SPE-62515-PA. http://dx.doi.org/10.2118/62515-PA.
Li, K. and Firoozabadi, A. 2000b. Phenomenological Modeling ofCritical Condensate Saturation and Relative Permeabilities in Gas/CondensateSystems. SPE J. 5 (2): 138-147. SPE-56014-PA. http://dx.doi.org/10.2118/56014-PA.
Marokane, D., Logmo-Ngog, A.B., and Sarkar, R. 2002.Applicability of Timely Gas Injection in Gas Condensate Fields To Improve WellProductivity. Presented at the SPE/DOE Improved Oil Recovery Symposium, Tulsa,13-17 April. SPE-75147-MS. http://dx.doi.org/10.2118/75147-MS.
Mohan, J. 2005. Modeling of Gas Condensate Wells with andwithout Hydraulic Fractures. MS thesis. 2005. . MS thesis, University ofTexas at Austin, Austin, Texas (August 2005).
Restrepo, A., Duarte, J.E., and Sanchez, Y. 2007. AMultiparameter Methodology for Skin Factor Characterization: Applying BasicStatistics to Formation Damage Theory. Presented at the European FormationDamage Conference, Scheveningen, The Netherlands, 30 May-1 June. SPE-107674-MS.http://dx.doi.org/10.2118/107674-MS.
Wheaton, R.J. and Zhang, H.R. 2000. Condensate Banking Dynamicsin Gas Condensate Fields: Compositional Changes and Condensate AccumulationAround Production Wells. Presented at the SPE Annual Technical Conference andExhibition, Dallas, 1-4 October. SPE-62930-MS. http://dx.doi.org/10.2118/62930-MS.