Evaluation Method for Development of Gas Condensate Reservoir Based on Fuzzy Mathematics

doi:10.11885/j.issn.1674-5086.2018.11.22.01

Abstract

Abstract: At present, gas condensate reservoirs commonly adopt the depletion development mode. However, only a few evaluation methods are suitable for the depletion assessment of gas condensate reservoirs. Targeting this problem, a study on the evaluation method for the depletion effect of gas condensate reservoirs was performed. Key parameters affecting the depletion effect of gas condensate reservoirs were selected to establish a production index system reflecting the development degree. Fuzzy mathematics was used to analyze to which extent key parameters affect the development degree, and a theoretical chart for the evaluation of the development effect was developed. The goodness of fit between the curves from actual data and the theoretical chart was used as the scoring criterion to establish a new method suitable for assessing the development of gas condensate reservoirs through depletion. Analysis using real examples shows that this method can comprehensively evaluate the development of gas condensate reservoirs through depletion from five aspects:production capacity, formation energy, degree of water flooding, recovery, and composition of well. The results are comprehensive, accurate, and reliable, capable of providing guidance for production on site.

Key words: gas condensate reservoir, depletion development, fuzzy mathematics, effect evaluation, chart analysis

CLC Number:

TE33⁺2

ZHAO Kunshan, WANG Yong, DING Lijuan, CUI Can, HE Haibo. Evaluation Method for Development of Gas Condensate Reservoir Based on Fuzzy Mathematics[J]. 西南石油大学学报(自然科学版), 2019, 41(3): 91-99.

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