The coning problems for vertical wells and the ridging problems for horizontal wells are very difficult to solve by conventional methods during oil production from reservoirs with bottom water drives. If oil in a reservoir is too heavy to follow Darcy’s law, the problems may become more complicated for the non-Newtonian properties of heavy oil and its rheology. To solve these problems, an innovative completion design with downhole water sink was presented by dual-completion in oil and water columns with a packer separating the two completions for vertical wells or dual-horizontal wells. The design made it feasible that oil is produced from the formation above the oil water contact (OWC) and water is produced from the formation below the OWC, respectively. To predict quantitatively the production performances of production well using the completion design, a new improved mathematical model considering non-Newtonian properties of oil was presented and a numerical simulator was developed. A series of runs of an oil well was employed to find out the best perforation segment and the fittest production rates from the formations above and below OWC. The study shows that the design is effective for heavy oil reservoir with bottom water though it cannot completely eliminate the water cone formed before using the design. It is a discovery that the design is more favorable for new wells and the best perforation site for water sink (Sink 2) is located at the upper 1/3 of the formation below OWC.
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September 2008
Research Papers
A Study to Prevent Bottom Water From Coning in Heavy-Oil Reservoirs: Design and Simulation Approaches
Binshan Ju,
Binshan Ju
School of Energy Resources, Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education,
e-mail: jubs2936@163.com
China University of Geosciences (Beijing)
, Beijing 100083, China
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Xiaofeng Qiu,
Xiaofeng Qiu
Block 1, Building 10, Unit 2, House 202,
China University of Petroleum (East China)
, 271 Beier Road, Dongying, Shandong 257062, P.R.C.
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Shugao Dai,
Shugao Dai
Shengli Oil Field Dongsheng Jinggong Petroleum Development Group Co. Ltd.
, Dongsheng Mansion, Xisi Road, No. 266, Dongying, Shandong 257000, P.R.C.
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Tailiang Fan,
Tailiang Fan
School of Energy Resources, Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, China
University of Geosciences (Beijing)
, Beijing 100083, China
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Haiqing Wu,
Haiqing Wu
Shengli Oil Field Dongsheng Jinggong Petroleum Development Group Co. Ltd.
, Dongsheng Mansion, Xisi Road, No. 266, Dongying, Shandong 257000, P.R.C.
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Xiaodong Wang
Xiaodong Wang
School of Energy Resources, Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education,
China University of Geosciences (Beijing)
, Beijing 100083, China
Search for other works by this author on:
Binshan Ju
School of Energy Resources, Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education,
China University of Geosciences (Beijing)
, Beijing 100083, Chinae-mail: jubs2936@163.com
Xiaofeng Qiu
Block 1, Building 10, Unit 2, House 202,
China University of Petroleum (East China)
, 271 Beier Road, Dongying, Shandong 257062, P.R.C.
Shugao Dai
Shengli Oil Field Dongsheng Jinggong Petroleum Development Group Co. Ltd.
, Dongsheng Mansion, Xisi Road, No. 266, Dongying, Shandong 257000, P.R.C.
Tailiang Fan
School of Energy Resources, Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, China
University of Geosciences (Beijing)
, Beijing 100083, China
Haiqing Wu
Shengli Oil Field Dongsheng Jinggong Petroleum Development Group Co. Ltd.
, Dongsheng Mansion, Xisi Road, No. 266, Dongying, Shandong 257000, P.R.C.
Xiaodong Wang
School of Energy Resources, Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education,
China University of Geosciences (Beijing)
, Beijing 100083, ChinaJ. Energy Resour. Technol. Sep 2008, 130(3): 033102 (11 pages)
Published Online: August 11, 2008
Article history
Received:
April 8, 2007
Revised:
April 20, 2008
Published:
August 11, 2008
Citation
Ju, B., Qiu, X., Dai, S., Fan, T., Wu, H., and Wang, X. (August 11, 2008). "A Study to Prevent Bottom Water From Coning in Heavy-Oil Reservoirs: Design and Simulation Approaches." ASME. J. Energy Resour. Technol. September 2008; 130(3): 033102. https://doi.org/10.1115/1.2955560
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