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Geoscience ›› 2021, Vol. 35 ›› Issue (02): 388-395.DOI: 10.19657/j.geoscience.1000-8527.2020.088

• Petroleum Geology • Previous Articles     Next Articles

Dynamic Evaluation of High-capacity Channel in Heavy Oil Reservoirs with Medium-high Permeability

LIU Xiaotong1(), XUAN Lingling1, ZHU Chunyan1, ZHAO Ying1, GUO Chang1, LI Song1, ZHANG Hao1, SHI Zhenyun2, LUO Wanjing2()   

  1. 1. Lushang Oilfield Operation Area, Jidong Oilfield Company, PetroChina, Tangshan, Hebei 063000, China
    2. School of Energy Resources, China University of Geosciences, Beijing 100083, China
  • Received:2019-07-11 Revised:2020-04-15 Online:2021-04-25 Published:2021-05-25
  • Contact: LUO Wanjing

Abstract:

During water flooding in medium-high permeability reservoir, due to the long-term scouring effect of water flow, some particles of reservoir rocks are transported. Along with the gradual development of high capacity channel of oil well sand production, ineffective circulation of edge and bottom water and injected water has become significant, and hampers the efficiency of reservoirs. We investigated the high-permeability heavy oil reservoir in block G104-5 of Gaoqianbei district. 10 dynamic and static index parameters were optimized based on the production characteristics of well site oil and water wells, and the index weight was determined with the Analytic Hierarchy Process (AHP). Considering the influence of 22 types of production dynamic adjustment measures of oil and water wells on the evaluation of high capacity channel, a set of high capacity channel dynamic evaluation method was established based on the fuzzy comprehensive evaluation principle, and VBA programming was used for calculation. The high capacity channel dynamic evaluation method was verified with the test data of injection profile and liquid producing profile. Evaluation index of high capacity channel was calculated, and the distribution map of high capacity channel with time was drawn by using the Petrel software. Our results provide an important guidance for understanding the spatial-temporal evolution law of high-capacity channel in medium-high permeability heavy oil reservoirs.

Key words: high-capacity channel, medium-high permeability reservoir, heavy oil reservoir, G104-5 block

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