Fractured-vuggy carbonate reservoirs have various types of units, and it is important making a full use of the well test data for revealing the reservoir characteristics and enhancing the oil production. In the conventional analytical well test model, the positional relationship of the well and the fractured-vuggy units can not be properly considered. According to the distribution of the well and the fractured-vuggy units, two kinds of discrete numerical models are proposed, and solved by the finite element method. The influence of the cave volume and the distance between the cave center and the well is analyzed. The measured data of 14 wells in Hala Hatang Oilfield are classified and summarized, and the classification of the reservoir units and the identification methods are analyzed. The well test double logarithmic curves are divided into five types corresponding to different reservoir characteristics:the cave development, no drilling cave, the well near the cave; the cave development, the drilling cave; a number of connected caves of the reservoir; matrix dominant, fracture is not developed; caves are not developed, drilling individual caves.
CHEN fangfang
,
LIU Yuewu
,
DING Zhiwen
,
WAN Yizhao
,
CAO Wen
,
GAO Dapeng
,
LI Qi
. The discrete numerical model and transient pressure curves of fractured-vuggy units in carbonate reservoir[J]. Science & Technology Review, 2017
, 35(14)
: 89
-95
.
DOI: 10.3981/j.issn.1000-7857.2017.14.012
[1] Mao C, Zhong J H, Li Y, et al. Ordovician carbonate rock matrix frac tured-porous reservoir in Tahe oilfield[J]. Petroleum Exploration and Development, 2014, 41(6):681-689.
[2] 李阳. 塔河油田碳酸盐岩缝洞型油藏开发理论及方法[J]. 石油学报, 2013, 34(1):115-121. Li Yang. The theory and method for development of carbonate frac tured-cavity reservoirs in Tahe oilfield[J]. Acta Petrolei Sinica, 2013, 34(1):115-121.
[3] 贾爱林, 闫海军, 郭建林, 等. 不同类型碳酸盐岩气藏开发特征[J]. 石油学报, 2013, 34(5):914-923. Jia Ailin, Yan Haijun, Guo Jianlin, et al. Development characteristic for different types of carbonate gas reservoir[J]. Acta Petrolei Sinica, 2013, 34(5):914-923.
[4] Camacho V R, Vasquez C M, Castrejon A R, et al. Pressure transient and decline curve behaviors in naturally fractured vuggy carbonate res ervoirs[J]. SPE Reservoir Evaluation and Engineering, 2005, 8(2):95-112.
[5] 康志宏. 碳酸盐岩油藏动态储层评价——以塔里木盆地塔河油田为例[D]. 成都:成都理工大学, 2003. Kang Zhihong. Evalution on reservoir of carbonate rock by dynamic analysis-Tahe reservior in Tarim basin as the the example[D]. Cheng Du University, 2003.
[6] 杨坚, 姚军, 王子胜, 等. 底水碳酸盐岩油藏数值试井模型及其应用[J]. 油气地质与采收率, 2006, 13(6):63-65. Yang Jian, Yao Jun, Wang Zisheng, et al. Numerical well test model of carbonate oil reservoirs with bottom water and its application[J]. Petro leum Geology and Recovery Efficiency, 2006, 13(6):63-65.
[7] 王子胜, 姚军, 戴卫华. 缝洞型油藏试井解释方法在塔河油田的应用[J]. 西安石油大学学报(自然科学版), 2007, 22(1):72-74. Wang Zisheng, Yao Jun, Dai Weihua. Application of the well test inter pretation method for fracturing reservoir in Tahe Oilfield[J]. Journal of Xi' an Shiyou University (Natural Science Edition), 2007, 22(1):72-74.
[8] 孙贺东, 施英, 唐海龙, 等. 三重介质油气藏试井分析研究进展[J]. 油气井测试, 2008, 17(1):71-74. Sun Hedong, Shi Ying, Tang Hailong, et al. Study development of well testing analysis for triple medium oil and gas reservoir[J]. Well Testing, 2008, 17(1):71-74.
[9] 杨磊, 凌涛, 胥猛生. 英买2缝洞型碳酸盐岩油藏试井曲线特征分析[J]. 油气井测试, 2012, 21(6):15-17. Yang Lei, Ling Tao, Xu Mengsheng, et al. Well test curve analysis of YM2 fracture-cave carbonate reservoir[J]. Well Testing, 2012, 21(6):15-17.
[10] 刘曰武, 刘慈群. 一类三重介质油藏数学模型的建立及其在试井分析中的应用[J]. 油气井测试, 1992, 4:7-10. Liu Yuewu, Liu Ciqun. The establishment of the mathematical model of a class of triple medium reservoir and its application in the test well analysis[J]. Well Testing, 1992, 4:7-10.
[11] 刘曰武, 刘慈群. 三重介质油气藏数学模型的建立及其渗流机理的研究[J]. 西南石油学院学报(自然科学版), 1993, 15(1):87-89. Liu Yuewu, Liu Ciqun. Study on Mathematical model of three-medi um oil and gas reservoir and seepage mechanism[J]. Journal of South west Petroleum University (Natural Science Edition), 1993, 15(1):87-89.
[12] 万义钊, 刘曰武. 缝洞型油藏三维离散缝洞数值试井模型[J]. 力学学报, 2015, 47(6):1000-1008. Wan Yizhao, Liu Yuewu. Three dimensional discrete-fracture-cavity numerical well test model for fractured-cavity reservoir[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(6):1000-1008.
[13] Teimoori A. Calculation of the effective permeability and simulation of fluid flow in naturally fractured reservoirs[D]. Sydney:University of New South Wales, 2005.
[14] Hassanpour R M, Manchuk J G, Leuangthong O, et al. Calculation of permeability tensors for unstructured gridblocks[J]. Journal of Canadi an Petroleum Technology, 2010, 49(10):65-74.
[15] Neale G H, Nader W K. The permeability of a uniformly vuggy porous medium[J]. Society of Petroleum Engineers Journal, 1973, 13(2):69-74.
[16] Golfier F, Lasseux D, Quintard M. Investigation of the effective perme ability of vuggy or fractured porous media from a Darcy-Brinkman ap proach[J]. Computational Geosciences, 2015, 19(1):63-78.
[17] Arbogast T, Lehr Heather. Homogenization of a Darcy-Stokes system modeling vuggy porous media[J]. Computational Geosciences, 2006, 10(3):291-302.
