DEVELOPMENT CHARACTERISTICS OF INHERITED FRACTURES IN DEEP SAND-SHALE RESERVOIR

ZHANG Kui-hua; FENG Jian-wei; DAI Jun-sheng

2013 Vol. 19, No. 2

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ZHANG Kui-hua, FENG Jian-wei, DAI Jun-sheng. DEVELOPMENT CHARACTERISTICS OF INHERITED FRACTURES IN DEEP SAND-SHALE RESERVOIR[J]. Journal of Geomechanics, 2013, 19(2): 214-224.

Citation:

ZHANG Kui-hua, FENG Jian-wei, DAI Jun-sheng. DEVELOPMENT CHARACTERISTICS OF INHERITED FRACTURES IN DEEP SAND-SHALE RESERVOIR[J]. Journal of Geomechanics, 2013, 19(2): 214-224.

DEVELOPMENT CHARACTERISTICS OF INHERITED FRACTURES IN DEEP SAND-SHALE RESERVOIR

1.
Western New Area Research Center of Shengli Oilfield, Dongying 257015, China
2.
School of Geosciences, China University of Petroleum, Qingdao 266580, China

Received Date: 02 December 2012

Publish Date: 25 June 2013

Abstract

Abstract

Aiming at low-permeability sand-shale reservoir in western compressional basin, with multiple tectonic movements, deep layers, many sale interlayers and high angle fracture network, the fractures not only acts as an effective migration pathway for oil and gas, but also are the main influencing factors to reservoir fracturing development. Taking one of given area for the deep sand shale fractured gas reservoirs before western Tianshan mountain, aiming at bottle neck effect in fracture prediction, carrying out formation mechanism study will be the break through, firstly on the base of core observation, CT computed tomographic scans and imaging logging interpretation, the study subtly statistics fracture occurrences, apertures and packing, then combing fluid inclusion testing and palaeostress field to divide formation times and conclude development models. The result shows that favorable conditions for inherited fractures in sand-shale reservoir are multiple tectonic movements, low stress difference, low approaching angle, appropriate shale content, on the whole, tectonic stress is the external factor, but lithology is the internal cause.
- deep sand shale observation /
- inherited fractures /
- CT computed tomographic scan /
- main controlling factor

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References

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