A Method for Evaluating the Dominant Seepage Channel of Water Flooding in Layered Sandstone Reservoir

Changlin Liao (), Xinwei Liao, Ruifeng Wang, Jing Chen, Jiaqi Wu and Min Feng
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Changlin Liao: Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China
Xinwei Liao: School of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
Ruifeng Wang: Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China
Jing Chen: Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China
Jiaqi Wu: School of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
Min Feng: Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China

Energies, 2022, vol. 15, issue 23, 1-12

Abstract: A method for evaluating the dominant seepage channel (DSC) water flooding in a layered sandstone reservoir is proposed and applied in an oilfield based on the water-cut derivative. The water-cut derivative curve of the reservoir with DSC shows double peaks. Therefore, based on the analysis of geology and production characteristics, the evaluation method of DSC is established. The evaluation index is proposed to quantitatively characterize the development degree of DSC and determine its distribution in a water-flooding reservoir. The test data validate that the proposed method can not only accurately determine the DSC and quantitatively evaluate its development degree, but also show its dynamic change. This method will be a powerful guide for water controlling and oil stabilizing in the adjustment stage of sandstone reservoirs.

Keywords: sandstone reservoir; dominant seepage channel; evaluation method; water-cut derivative; classification chart (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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