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Optimization Method Study of Enhanced Oil Recovery for Conventional Heavy Oil Reservoir

Author: XuBinBin
Tutor: SunHuanQuan
School: China University of Petroleum
Course: Oil and Gas Field Development Project
Keywords: EOR technology Adaptability Evaluation Risk Analysis Monte Carlo method Jidong Oilfield
CLC: TE357.46
Type: Master's thesis
Year: 2008
Downloads: 424
Quote: 2
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Abstract


Of heavy oil is rich in resources, and cost-effective development of heavy oil reservoir can slow down the pressure on national resources. EOR method is an important means of development of heavy oil resources in China, but one of the three oil extraction method mechanism is very complex, and has a large investment, high cost, and risk analysis is very important so the potential for EOR methods. In this thesis, combined EOR development trend of extensive research and study of current EOR mechanism and application of the new method. Has collected more than 364 domestic and foreign block implementation of EOR Development Zone reservoir static and dynamic data based on the Jidong Nanpu the onshore oilfield conventional heavy oil reservoir, for example, combined with reservoir geology, development conditions, and Hebei the land oilfield conventional heavy oil reservoirs, Fort southeast EOR early screening results showed that the the shallow high penetration of conventional heavy oil reservoirs could be considered chemical flooding, foam flooding and microbial flooding. Combination of numerical simulation and economic evaluation of the Jidong Nanpu land conventional heavy oil reservoir EOR technology preferred, results showed that the the shallow conventional heavy oil reservoirs preferred technology for the crosslinked polymer flooding, indoor experiments verify the EOR preferred technical validity. Crosslinked polymer flooding technology development and the economic effect factor analysis showed that the main reservoir factors include permeability coefficient of variation, formation water salinity, reservoir temperature, the viscosity of crude oil and permeability; economic benefits of major influencing factors including crude oil Price and incremental investment. Numerical reservoir simulation and economic evaluation method based on the Monte Carlo principle, in order to improve the recovery rate and the internal rate of return risk evaluation, EOR adaptability analysis and potential evaluation method, and Jidong Fort terrestrial shallow conventional heavy oil reservoir, for example, risk analysis and potential evaluation. Class reservoir the implementation of the cross-linked polymer flooding enhanced oil recovery of 3.47 to 3.87%, increase recoverable reserves of 35.22 to 39.28 × 104t, after-tax internal rate of return of 23.66 to 64.71%, and the risk index of 4.17%, technical and economic potential, the risk is small. The proposed EOR technology adaptability and potential evaluation research methods considering the technical, economic adaptability and risk of EOR methods, examples show that the proposal to provide guidance for oilfield EOR technology.

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CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Production Engineering > Enhanced oil recovery and maintain reservoir pressure (secondary and tertiary oil recovery ) > Thermal, miscible , Chemical Oil Recovery (EOR EOR ) > Chemical flooding
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