Gelled Scale Inhibitor Treatment for Improved Placement in Long Horizontal Wells at Norne and Heidrun Fields
- Olav Martin Selle (StatoilHydro) | Martin Springer (StatoilHydro) | Inge H. Auflem (StatoilHydro) | Ping Chen (Champion Technologies) | Rozenn Matheson (Champion Technologies) | Amare A. Mebratu (Halliburton) | Gerard Glasbergen (Halliburton)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- August 2009
- Document Type
- Journal Paper
- 425 - 438
- 2009. Society of Petroleum Engineers
- 2.4.3 Sand/Solids Control, 5.2 Reservoir Fluid Dynamics, 4.1.5 Processing Equipment, 1.14 Casing and Cementing, 4.1.2 Separation and Treating, 4.2.3 Materials and Corrosion, 4.3.4 Scale, 5.5.2 Core Analysis, 1.8 Formation Damage, 1.6 Drilling Operations, 2.2.2 Perforating, 3.3.1 Production Logging, 5.4.10 Microbial Methods, 1.3.2 Subsea Wellheads, 5.3.2 Multiphase Flow, 5.4.7 Chemical Flooding Methods (e.g., Polymer, Solvent, Nitrogen, Immiscible CO2, Surfactant, Vapex), 3 Production and Well Operations, 1.6.9 Coring, Fishing, 5.6.4 Drillstem/Well Testing, 1.10 Drilling Equipment, 2.4.5 Gravel pack design & evaluation
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The success of a scale inhibitor treatment depends on placement efficiency. The scale inhibitor should be placed so that all water-producing intervals accept a sufficient quantity of the total treatment volume. If significant permeability or pressure variations are present in the interval to be treated, treatment fluid will enter the zones with the higher permeability and lower pressure, leaving little fluid to treat the other zones, which can be the water- producing zones. The challenge is even greater in long, horizontal wells with significant permeability and pressure contrast.
To achieve a more uniform fluid coverage, the original flow distribution across intervals often needs to be altered. The methods used to alter this are called "diversion" methods. The purpose is to divert the flow from one portion of the interval to another. In response to this challenge, a joint study with the objective of improving the placement of treatment fluids was initiated by a major operator in the North Sea and two service companies in 2002.
The joint work resulted in development of a fully viscosified scale inhibitor system. The system comprises a purified xanthan viscosifying agent, a standard scale inhibitor for downhole scale squeezing, and a breaker to achieve controlled gel breaking down hole.
The system has been field tested at Norne field in two long horizontal wells and at Heidrun field in one long deviated well, all with significant permeability variations and crossflow. The operations were successful and the scale treatments have protected the wells from scaling. This paper describes the product qualification process, placement simulation, temperature prediction, gel breaking characteristics, case histories, and post-job evaluation.
|File Size||1 MB||Number of Pages||14|
Glasbergen, G. and Buijse, M. 2006. Improved Acid Diversion Design Usinga Placement Simulator. Paper SPE 102412 presented at the SPE Russian Oiland Gas Technical Conference and Exhibition, Moscow, 3-6 October. doi:10.2118/102412-MS.
James, J.S., Frigo, D.M., Townsend, M.M., Graham, G.M., Wahid, F., andHeath, S.M. 2005. Application of aFully Viscosified Scale Squeeze for Improved Placement in Horizontal Wells.Paper SPE 94593 presented at the SPE International Symposium on Oilfield Scale,Aberdeen, 11-12 May. doi: 10.2118/94593-MS.
Menzies, N.A., Mackay, E.J., and Sorbie, K.S. 1999. Modeling of Gel Diverter Placement inHorizontal Wells. Paper SPE 56742 presented at the SPE Annual TechnicalConference and Exhibition, Houston, 3-6 October. doi: 10.2118/56742-MS.
Nitters, G., Roodhart, L., Jongma, H., Yeager, V., Buijse, M., Fulton, D.,Dahl, J., and Jantz, E. 2000. Structured Approach to AdvancedCandidate Selection and Treatment Design of Stimulation Treatments. PaperSPE 63179 presented at the SPE Annual Technical Conference and Exhibition,Dallas, 1-4 October. doi: 10.2118/63179-MS.
Paccaloni, G. 1995. A New,Effective Matrix Stimulation Diversion Technique. SPE Prod & Fac10 (3): 151-156. SPE-24781-PA. doi: 10.2118/24781-PA.
Schramm, G. 2004. A Practical Approach to Rheology and Rheometry,second edition. Karlsruhe, Germany: Gebrueder HAAKE GmbH.
Selle, O.M., Wat, R.M.S, Nasvik, H., and Mebratu, A. 2004. Gelled Organic Acid System forImproved CaCO3 Removal in Horizontal Openhole Wells at the Heidrun Field.Paper SPE 90359 presented at the SPE Annual Technical Conference andExhibition, Houstons, 26-29 September. doi: 10.2118/90359-MS.
Selle, O.M., Wat, R.M.S., Vikane, O., Nasvik, H., Chen, P., Hagen, T.,Montgomerie, H., and Bourne, H. 2003. A Way Beyond ScaleInhibitors--Extending Scale Inhibitor Squeeze Life Through Bridging. PaperSPE 80377 presented at the International Symposium on Oilfield Scale, Aberdeen,30-31 January. doi: 10.2118/80377-MS.
Sorbie, K.S. and MacKay, E.J. 2005. Scale Inhibitor placement: Back toBasics--Theory and Examples. Paper SPE 95090 presented at the SPEInternational Symposium on Oilfield Scale, Aberdeen, 11-12 May. doi:10.2118/95090-MS.
Sorbie, K.S., Mackay, E.J., Collins, I.R., and Wat, R. 2007. Placement Using ViscosifiedNon-Newtonian Scale Inhibitor Slugs: The Effect of Shear Thinning. SPEProd & Oper 22 (4): 434-441. SPE-100520-PA. doi:10.2118/100520-PA.
Stalker, R., Graham, G.M., Oliphant, D., and Smillie, M. 2004. Potential Application of ViscosifiedTreatments for Improved Bullhead Scale Inhibitor Placement in Long HorizontalWells--A Theoretical and Laboratory Examination. Paper SPE 87439 presentedat the SPE International Symposium on Oilfield Scale, Aberdeen, 26-27 May. doi:10.2118/87439-MS.