Coreflood Studies Examine New Technologies That Minimize Intervention Throughout Well Life Cycle
- Myles M. Jordan (Nalco Co.) | Ian R. Collins (BP Exploration) | Angeli Gyani (BP) | Gordon M. Graham (Scaled Solutions Limited)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- May 2006
- Document Type
- Journal Paper
- 161 - 173
- 2006. Society of Petroleum Engineers
- 7.1.5 Portfolio Analysis, Management and Optimization, 5.7.5 Economic Evaluations, 4.5 Offshore Facilities and Subsea Systems, 4.2 Pipelines, Flowlines and Risers, 2.4.5 Gravel pack design & evaluation, 4.2.3 Materials and Corrosion, 3.1.6 Gas Lift, 2.4.3 Sand/Solids Control, 4.1.2 Separation and Treating, 1.6 Drilling Operations, 2.2.2 Perforating, 4.3 Flow Assurance, 4.3.3 Aspaltenes, 6.5.2 Water use, produced water discharge and disposal, 3 Production and Well Operations, 2 Well Completion, 5.2 Reservoir Fluid Dynamics, 7.5.3 Professional Registration/Cetification, 4.3.4 Scale, 1.8 Formation Damage, 3.2.3 Hydraulic Fracturing Design, Implementation and Optimisation
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With the development of more and more subsea fields, the challenge for scale-inhibitor squeeze treatments is to reduce intervention frequency by extending squeeze treatment lifetime while concomitantly reducing any potential damage in both low water-cut and high water-cut wells. This paper discusses the technical problems and examines new technologies for treatment of such production wells through their life cycle. This paper covers the findings from late 2001 through early 2002. Because even newer technologies have been developed since the writing of this paper, it should be read as the history of technological development.
Scale control technology available to control scale formation within the reservoir and near-wellbore area of production wells will be outlined with a focus on the current developing technology to control scale within low water-cut wells. Moreover, this paper shows that the new technical area of emulsion-scale-inhibitor-delivery systems, originally designed to control scale within low water-cut wells, has applications in both low and high water-cut wells.
This study assists in developing an understanding of the mechanism of interaction of emulsion-based products—in particular, the impact of the level of water saturation within the core system. In addition, it demonstrates that the emulsion particles are retained in the core matrix during both crude and brine flowback. This paper indicates that the emulsion product offers the potential for extremely long squeeze lifetimes with minimal damage in oil-production wells with rising water cut. It also demonstrates how different technologies have their own place in the life cycle of a production well.
Flow assurance is an essential aspect of the economic production of crude oil. It can be considered the ability to produce petroleum fluids economically from the reservoir to a production facility over the lifetime of a field. Scale control is one of the key aspects of the flow-assurance issue. The increasing number of subsea fields, together with deepwater production, raises particular issues and evolving challenges for flow assurance beyond those seen for simple vertically drilled wells. The complexity of new well completions in terms of horizontal and multilateral wells, subsea tiebacks, and commingled flow presents particular challenges. Where scale-inhibitor treatments are required for such complex wells, they are often associated with very high intervention costs.
Scale control issues need to be addressed as part of asset life cycle management, whereby the issues are tackled before field development/production [i.e., capital expenditure (capex) phase] rather than being reactively confronted once water breakthrough occurs [operational expenditure (opex) phase]. Such an approach allows for the selection of an appropriate economic technology. Indeed, the anticipated problems may influence the plans to develop a field, for example, in terms of water-injection strategies or implementing appropriate technology upon well completion.
Scale control within life cycle management is based on varying challenges seen with the increase in water cut as a field and its wells move from dry production to high water cuts. This is associated with four phases of field development—project, plateau, decline, and decommission (Fig. 1). At the project stage, scale control treatment strategies can be developed. The scale issues at subsequent stages depend on the nature and severity of the anticipated scale problem. Fig. 2 outlines the scale issues associated with the injection of seawater into a reservoir with barium and bicarbonate present in the formation water.
The process of evaluating the risk of scale in a field under appraisal is briefly outlined below. The factors to be taken into account when evaluating the risk of scale formation and control are described in detail, along with currently available technologies and the gaps that exist in a recent SPE publication (Jordan et al. 2001).
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Børeng, R., Sorbie, K.S., and Yuan, M.D. 1994. The Underlying Theory andModelling of Scale Inhibitor Squeezes in Three Offshore Wells on the NorwegianContinental Shelf. Paper presented at the NIF Intl. Oil Field ChemicalsSymposium, Geilo, Norway, 20-23 March.
Bourne, H.M., Booth, S.L., and Brunger, A. 1999. Combining Innovative Technologies ToMaximize Scale Squeeze Cost Reduction. Paper SPE 50718 presented at the SPEInternational Symposium on Oilfield Chemistry, Houston, 16-19 February.
Bourne, H.M., Collins, I.R., Cowie, L.G., Strachan, C., and Nicol, M. 1997.The Role of Additives on Inhibitor Precipitate Solubility and its Importance inExtending Squeeze Lifetimes. Paper presented at the IBC Technical Conference onAdvances in Solving Oilfield Scaling, Aberdeen, 22-23 January.
Carlberg, B.L. 1987. ScaleInhibitor Precipitation Squeeze for Non-Carbonate Reservoirs. Paper SPE17008 presented at the SPE Production Technology Symposium, Lubbock, Texas,16-17 November.
Collins, I.R., Cowie, L.G., Nicol, M., and Stewart, N.J. 1999. Field Application of a ScaleInhibitor Squeeze Enhancing Additive. SPEPF 14 (1): 21-29. SPE 54525.
Collins, I.R., Jordan M.M., and Taylor, S.E. 2000. The Development and Application of aNovel Scale Inhibitor System for Deployment in Low Water Cut, Water Sensitiveor Low Pressure Oil Reservoirs. Paper SPE 60192 presented at the SPEInternational Symposium on Oilfield Scale, Aberdeen, 26-27 January.
Collins, I.R., Jordan, M.M., Feasey, N., and Williams, G.D. 2001. The Development of Emulsion-BasedProduction Chemical Deployment Systems. Paper SPE 65026 presented at theSPE International Symposium on Oilfield Chemistry, Houston, 13-16 February.
Collins, I.R., Stewart, N.J., Wade, S.R., Goodwin, S.G., Hewartson, J.A.,and Deignan, S.D. 1997. Extending Scale Squeeze Lifetimes Using a ChemicalAdditive: From the Laboratory to the Field. Paper presented at the IBC SolvingOilfield Scaling Conference, Aberdeen, 22-23 January.
Davis, R., Lomax, I., and Plummer, M. 1996. Membranes Solve North SeaWaterflood Sulfate Problems. Oil and Gas J., 25 November: 59-64.
Emmons, D.H., Graham, G.C., Holt, S.P., Jordan, M.M., and Locardel, B. 1999.On-Site, Near-Real-Time Monitoringof Scale Deposition.Paper SPE 56776 presented at the SPE AnnualTechnical Conference and Exhibition, Houston, 3-6 October.
Feasey, N.D., Wintle, R.J., Frieter, E.R., and Jordan, M.M. 2000. FieldExperience with a Novel Near Real time Monitor For Scale Deposition in OilfieldSystem, NACE, Orlando, Florida, 24-27 March.
Graham, G.M., Gyani, A., Jordan, M.M., Strachen, C., McClure. R.,Littlehales, I.J., and Fitzgerald, A. 2002. Selection and Application of aNon-Damaging Scale Inhibitor Package for Pre-Emptive Squeeze in MungoProduction Wells.Paper SPE 74665 presented at the SPE InternationalSymposium on Oilfield Scale, Aberdeen, 30-31 January.
Hardy, J.A. and Simm, I. 1996. Low Sulfate Seawater Mitigates Barite Scale.Oil and Gas J., 2 December.
Jordan, M.M., Edgerton, M., and Mackay, E.J. 1999. Application of Computer SimulationTechniques and Solid Divertor to Improve Inhibitor Squeeze Treatments inHorizontal Wells. Paper SPE 50713 presented at the SPE InternationalSymposium on Oilfield Chemistry, Houston, 16-19 February.
Jordan, M.M., Graff, C., and Cooper, K. 2000. Development and Deployment of a ScaleSqueeze Enhancer and Oil-Soluble Scale Inhibitor to Avoid Deferred OilProduction Losses During Squeezing Low-Water Cut Wells, North Slope,Alaska. Paper SPE 58725 presented at the SPE International Symposium onFormation Damage Control, Lafayette, Louisiana, 23-24 February.
Jordan, M.M., Sjuraether, K., Collins, I.R., Feasey, N.D., and Emmons, D.2001. Life Cycle Management ofScale Control within Subsea Fields and its Impact on Flow Assurance, Gulf ofMexico and the North Sea Basin.Paper SPE 71557 presented at the SPEAnnual Technical Conference and Exhibition, New Orleans, 30 September-3October.
Jordan, M.M., Sorbie, K.S., Jiang, P., Yuan, M.D., Todd, A.C., and Hourston,K.E. 1994. Phosphonate ScaleInhibitor Adsorption/Desorption and the Potential for Formation Damage inReconditioned Field Core. Paper SPE 27389 presented at the SPE FormationDamage Control Symposium, Lafayette, Louisiana, 7-10 February.
King, G.E. and Warden, S.L. 1989. Introductory Work in Scale InhibitorSqueeze Performance: Core Test and Field Results. Paper SPE 18485 presentedat the SPE International Symposium on Oilfield Chemistry, Houston, 8-10February.
Mackay, E.J. and Sorbie, K.S. 1998. Modelling Scale Inhibitor SqueezeTreatments in High Crossflow Horizontal Wells. Paper SPE 50418 presented atthe SPE International Conference on Horizontal Well Technology, Calgary, 1-4November.
Mackay, E.J., Jordan, M.M., and Torabi, F. 2002. Predicting Brine Mixing Deep Withinthe Reservoir, and the Impact on Scale Control in Marginal and DeepwaterDevelopments.Paper SPE 73779 presented at SPE International Symposiumand Exhibition on Formation Damage Control, Lafayette, Louisiana, 20-21February.
Mackay, E.J., Matharu, A.D., Sorbie, K.S., Jordan, M.M., and Tomlins, R.1998. Modelling of Scale InhibitorTreatments in Horizontal Wells: Application to the Alba Field. Paper SPE39452 presented at the SPE Formation Damage Control Conference, Lafayette,Louisiana, 18-19 February.
Malandrino, A., Yuan, M.D., Sorbie, K.S., and Jordan, M.M. 1995. Mechanistic Study and Modelling ofPrecipitation Scale Inhibitor Squeeze Processes. Paper SPE 29001 presentedat the SPE International Symposium on Oilfield Chemistry, San Antonio, Texas,14-17 February.
Martins, J.P., Kelly, R., Lane, R.H., Olson, J.B., and Bannon, H.D. 1992. Scale Inhibition of HydraulicFractures in Prudhoe Bay. Paper SPE 23809 presented at the SPE FormationDamage Control Symposium, Lafayette, Louisiana, 26-27 February.
McCracken, I.M. et al. 2004.BP Fluid Sampling Protocols. Available bywriting Ian Collins Technology Progam Manager, BP Exploration, E&PTechnology Group, Building C, Sunbury Business Park, Chertsey Road,Sunbury-on-Thames, Middlesex, TW16 7LN.
Pardue, J.E. 1991. A NewInhibitor for Scale Squeeze Applications. Paper SPE 21023 presented at theSPE International Symposium on Oilfield Chemistry, Anaheim, California, 20-22February.
Ravenscroft, P.D., Cowie, L.G., and Smith, P.S. 1996. Magnus Scale Inhibitor SqueezeTreatments—A Case History. Paper SPE 36612 presented at the SPE AnnualTechnical Conference and Exhibition, Denver, 6-9 October.
Sorbie, K.S., Todd, A.C., Wat, R.M.S., and McClosky, T. 1991. Derivation ofScale Inhibitor Isotherms for Sandstone Reservoirs. Chemicals in the OilIndustry—Developments and Applications, ed. P.H. Ogden. Cambridge, U.K.: RoyalSoc. of Chemistry Publications.
Sorbie, K.S., Yuan, M.D., and Jordan, M.M. 1994. Application of a Scale InhibitorSqueeze Model to Improve Field Squeeze Treatment Design. Paper SPE 28885presented at the SPE European Petroleum Conference, London, 25-27 October.
Vu, V.K., Hurtevent, C., and Davis, R.A. 2000. Eliminating the Need for ScaleInhibition Treatments for Elf Exploration Angola's Girassol Field. PaperSPE 60220 presented at the SPE International Symposium on Oilfield Scale,Aberdeen, 26-27 January.
Webb, P.J.C., Nistad, T.A., Knapstad, B., Ravenscroft, P.D., and Collins,I.R. 1999. Advantages of a NewChemical Delivery System for Fractured and Gravel-Packed Wells. SPEPF 14(3) 210-219. SPE 57421.
Zhang, H. and Sorbie, K.S. 1997a. SQUEEZE V: A Program to Model InhibitorSqueeze Treatments in Radial and Linear Systems—User's Manual. Edinburgh: Dept.of Petroleum Engineering, Heriot-Watt U.
Zhang, H. and Sorbie, K.S. 1997b. ASSIST II User's Manual. Edinburgh: Dept.of Petroleum Engineering, Heriot-Watt U.