离散裂缝网络建模技术在大庆油区泥岩裂缝性油气藏的应用浅析

Abstract

Abstract:

：The mudstone fractured oil and gas reservoir is a kind of special unconventional reservoirs and its hydrocarbon mainly exists in fractures. This kind of reservoirs has industrial exploitation value due to the large reserves, but the complex geological condition leads to its poor develop effects. In order to reconstruct the geological condition and analyze the production capacity of the mudstone fractured oil and gas reservoir before fracturing, the core characteristics, downhole microseismic and dynamic information of production are fully considered. According to the characteristics and production of the development layer with mudstone fractures in Daqing area, and combined with the seismic and other structural research results, we established the fracture network model, which was constrained by the crack strength attribute. Based on the network model, the coupling model of the artificial fracture and natural fracture is established, so that to analyze the effect before and after fracturing. The results show that the fractured model can accurately describe the numbers and direction of the natural fractures, and estimate the oil and gas production before and after fracturing. The study is used as a method for evaluating the productivity of mudstone fractured oil and gas reservoirs in area A of Daqing, and to provide the basis for the fracturing construction of other wells in this zone.

Key words: Key works: mudstone fractured oil and gas reservoir, crack strength attribute, natural fracture, coupling model, productivity evaluation

CLC Number:

TE357.1

Xu Wei,Yongping Zhang,Yunhe Bo, et al. Application of discrete fracture network modeling technology in mudstone fractured reservoir in Daqing oil region[J]. Reservoir Evaluation and Development, 2018, 8(4): 11-16.

Figures/Tables 7

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Table 1

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References 23

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井号	岩心描述裂缝总条数	裂缝模型与岩心描述吻合条数	裂缝模型与岩心描述不吻合条数	吻合率, %
HA14	52	44	8	85
HA16	112	103	9	92
HA18	31	25	6	81
YING12	28	23	5	82
YING15	140	123	17	88
YING 16	129	116	13	90
YING 18	44	38	6	86
GUPING1	54	51	3	94
平均				87.25
合计	590	523	67

Application of discrete fracture network modeling technology in mudstone fractured reservoir in Daqing oil region

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