Analysis on the SAGD Simulation Using Characteristic Variable of Fracture System in Fractured Carbonate Reservoirs

Ju-Hwan Na; Il-Sik Jang

doi:10.12972/ksmer.2017.54.5.521

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Research Paper

Analysis on the SAGD Simulation Using Characteristic Variable of Fracture System in Fractured Carbonate Reservoirs 탄산염 균열저류층에서 균열시스템 특성변수를 적용한 SAGD 시뮬레이션 연구

31 October 2017. pp. 521-532

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Abstract

The OOIP (original oil in-place) of bitumen in fractured carbonate reservoir of Grosmont, Canada is estimated at about 406.5 billion barrels. The Grosmont reservoir is characterized as various matrix sizes due to heterogeneity in fracture density. SAGD simulations for the Grosmont Formation have been based on the dual porosity and dual permeability model. In this study, characteristic variables for fracture system are considered to reflect the mechanism in fracture due to steam injection. The result shows that the characteristic variables play important role in dual porosity model, while trivial in dual permeability model. The effect of the characteristic variables for fracture system has been investigated in terms of the optimal preheating period, recovery factor, and cSOR.

Keywords

Fractured carbonate reservoir

SAGD

Dual porosity model

Dual permeability model

Characteristic variable of fracture system

탄산염 균열 저류층인 캐나다 Grosmont 층은 약 4,065억 배럴의 비튜멘이 부존되어 있다. Grosmont 저류층은 불균질한 균열 발달로 다양한 크기의 매질이 혼재되어 있는 특성을 가진다. Grosmont 층에 대한 기존 SAGD 시뮬레이션은 이원공극 모델과 이원투과도 모델이 적용되고 있다. 이 연구에서는 스팀주입에 따른 균열 내 현상을 반영한 균열시스템 특성변수를 고려하여 시뮬레이션을 수행하였다. 그 결과 이원투과도 모델에서는 영향이 미미하였으나 이원공극 모델에서는 균열시스템 특성변수에 따라 큰 차이를 보였다. 이원공극 모델에서 균열시스템 특성변수에 따른 최적 예비가열 기간을 도출하고 SAGD 생산 시뮬레이션에 미치는 영향을 분석하였다.

키워드

탄산염 균열 저류층

SAGD

이원공극모델

이원투과도모델

균열시스템 특성변수

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Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 54
No :5
Pages :521-532
Received Date : 2017-08-10
Revised Date : 2017-10-24
Accepted Date : 2017-10-26
DOI :https://doi.org/10.12972/ksmer.2017.54.5.521

Journal of the Korean Society of Mineral and Energy Resources EngineersISSN:2288-0291(Print) 2288-2790(Online)한국자원공학회

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