Critical Oil Rate and Well Productivity in Cold Production From Heavy-Oil Reservoirs
- Boyun Guo (China University of Petroleum) | Deli Gao (China University of Petroleum) | Chi Ai (Northeast Petroleum University) | Jianfang Qu (Northeast Petroleum University)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- February 2012
- Document Type
- Journal Paper
- 87 - 93
- 2012. Society of Petroleum Engineers
- 2.4.3 Sand/Solids Control, 2 Well Completion, 5.4.11 Cold Heavy Oil Production (CHOPS)
- Cold Production, Unconsolidated, CHOPS, Heavy Oil, Sandy Well
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- 1,039 since 2007
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Cold heavy-oil production with sand (CHOPS) has been widely used for recovering heavy oil from unconsolidated sandstones (UCSs). Although this technology is considered to be mature in some oil fields in Canada, there are some technical issues that need to be addressed when this technology is transferred to fields in other parts of the world. These issues are primarily related to the variations in local geological and reservoir conditions. One of the concerns is whether the designed well production rate is high enough to self-clean the wellbore against sand accumulation. During planning of CHOPS completions, it is imperative to know if the designed fluid-production rate will be adequate to carry sand to surface, especially when horizontal wells are employed, where a significant amount of sand can accumulate in the horizontal wellbore that can kill the well. However, it is not clear what constitutes the "adequate" fluid-production rate. A theoretical investigation of sand transport in heavy oil was conducted in this study. A critical fluid-production rate was defined to quantitatively describe the "adequate" production rate required to carry sand to surface in vertical, inclined, and horizontal wells. Also developed in this study is a CHOPS-well deliverability model based on self-stimulation of reservoir and oil/water/gas/solid four-phase flow in the production string. Combined use of the critical-production-rate model and the well-deliverability model allows for optimal selection of pumps that will ensure the smooth production of fluids in CHOPS operations. This paper provides petroleum engineers with essential knowledge and information for planning CHOPS well completions.
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Babu, D.K. and Odeh, A.S. 1989. Productivity of a Horizontal Well. SPERes Eng 4 (4): 417-421. SPE-18298-PA. http://dx.doi.org/10.2118/18298-PA.
Bourgoyne, A.T., Millheim, K.K., Chenevert , M.E., and Young, S.F. 1986.Applied Drilling Engineering, Vol. 2, 173-175. Richardson, Texas:Textbook Series, SPE.
Butler, R. 1998. SAGD Comes of Age! J Can Pet Technol 37(7): 9-12. JCPT Paper No. 98-07-DA. http://dx.doi.org/10.2118/98-07-DA.
Butler, R.M. 1994. Horizontal Wells for the Recovery of Oil, Gas andBitumen, No. 2. Richardson, Texas: Monograph Series, SPE.
Chen, N.H. 1979. An Explicit Equation for Friction Factor in Pipe. Ind.Eng. Chem. Fundam. 18 (3): 296-297. http://dx.doi.org/10.1021/i160071a019.
Collins, P.M., Dusseault, M.B., Dorscher, D., and Kueber, E. 2008.Implementing Chops in the Karazhanbas Heavy Oil Field, Kazakhstan. Paper2008-500 presented at the World Heavy Oil Congress, Edmonton, Alberta, Canada,10-12 March.
Dikken, B.J. 1990. Pressure Drop in Horizontal Wells and Its Effect onProduction Performance. J Pet Technol 42 (11): 1426-1433.SPE-19824-PA. http://dx.doi.org/10.2118/19824-PA.
Duan, M., Miska, S., Yu, M., Takach, N., Ahmed, R., and Zettner, C. 2009.Critical Conditions for Effective Sand-Sized Solids Transport in Horizontal andHigh-Angle Wells. SPE Drill & Compl 24 (2): 229-238.SPE-106707-PA. http://dx.doi.org/10.2118/106707-PA.
Dusseault, M. 1993. Cold Production And. Enhanced Oil Recovery. J Can PetTechnol 32 (9): 16-18. JCPT Paper No. 93-09-01. http://dx.doi.org/10.2118/93-09-01.
Dusseault, M.B. 2002. CHOPS: Cold Heavy Oil Production with Sand in theCanadian Heavy Oil Industry. Technical report, Alberta Department of Energy,Government of Alberta, Edmonton, Alberta (March 2002), Chap. 5, 96-119. http://www.energy.alberta.ca/OilSands/1189.asp.
Dusseault, M.B., Zambrano, A., Barrios, J.R., and Guerra, C. 2008.Estimating Technically Recoverable Reserves in the Faja Petrlifera del Orinoco:FPO. Paper 2008-437 presented at the World Heavy Oil Congress, Edmonton,Alberta, Canada, 10-12 March.
Economides, M., Deimbachor, F.X., Brand, C.W., and Heinemann, Z.E. 1991.Comprehensive -Simulation of Horizontal-Well Performance. SPE Form Eval 6 (4): 418-426. SPE-20717-PA. http://dx.doi.org/10.2118/20717-PA.
Fang, Q., Guo, B., and Ghalambor, A. 2008. Formation of Underwater CuttingsPiles in Offshore Drilling. SPE Drill & Compl 23 (1):23-28. SPE-100922-PA. http://dx.doi.org/10.2118/100922-PA.
Furui, K., Zhu, D., and Hill, A.D. 2003. A Rigorous Formation Damage SkinFactor and Reservoir Inflow Model for a Horizontal Well. SPE Prod &Oper 18 (3): 151-157. SPE-84964-PA. http://dx.doi.org/10.2118/84964-PA.
Guo, B., Sun, K., and Ghalambor, A. 2008. Well Productivity Handbook.Houston, Texas: Gulf Publishing Company.
Han, G., Bruno, M., and Dusseault, M.B. 2007. How Much Oil You Can Get FromCHOPS. J Can Pet Technol 46 (4): 24-32. JCPT Paper No.07-04-02. http://dx.doi.org/10.2118/07-04-02.
Joshi, S.D. 1988. Augmentation of Well Productivity with Slant andHorizontal Wells. J Pet Technol 40 (6): 729-739.SPE-15375-PA. http://dx.doi.org/10.2118/15375-PA.
Santos, R., Robertson, G., and Vasquez, M. 2001. Geologic Reality AlteredCerro Negro Development Scheme. Oil Gas J. 99 (4).
Stokes, G.G. 1845. On the Theories of the Internal Friction of Fluids inMotion, and of the Equilibrium and Motion of Elastic Solids. Transactions ofthe Cambridge Philosophical Society VIII (14 April 1845): 287.
Stokes, G.G. 1851. On the Effect of the Internal Friction of Fluids on theMotion of Pendulums. Transactions of the Cambridge Philosophical Society IX (Part II): No. X, 8.