Quantitative characterization of Ordovician carbonate fracture-cavity aggregate in Tarim Basin
Online published: 2013-11-26
Quantitative characterization of large fracture-cavity aggregate is the keymethod for efficient development of medium-low abundance fracture-cavity reservoir with fewer wells. Carbonate fracture-cavity reservoir is characterized by complex structure, multi-stage geologic origin and strong heterogeneity, which makes it difficult to develop by conventional modeling means. Taking typical block in Halahatang Oilfield in Ordos Basin as an example, combined with geologic features and seismic facies analysis, this paper used cluster analysis method to carry out geometric modeling of large fracture-cavity aggregate. Considering the lack of well logging data, complicated inner texture and strong heterogeneity of carbonate fracture-cavity reservoir, we applied geostatistical inversion technology to the reservoir
lithofacies and porosity modeling, established static model of fracture-cavity aggregate for Halahatang Oilfield, and carried out the quantitative characterization. Furthermore, modified the size, boundary and connectivity of the large fracture-cavity aggregatemodel by dynamic data fromsingle well and multiple wells, and completed the fine characterization. The study result can guide the drilling site design and development.
LI Fengjie , YANG Chengjin , DAI Tingyong , LI Junwu , YANG Yuchuan . Quantitative characterization of Ordovician carbonate fracture-cavity aggregate in Tarim Basin[J]. Lithologic Reservoirs, 2013 , 25(6) : 89 -94 . DOI: 10.3969/j.issn.1673-8926.2013.06.016
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