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Research Of Chang-6Reservoir Fracture In Gutun District, Ganguyi Oilfield

Posted on:2013-07-31Degree:MasterType:Thesis
Country:ChinaCandidate:S H WangFull Text:PDF
GTID:2230330395478263Subject:Mineral reconnaissance and exploration
Abstract/Summary:PDF Full Text Request
Gutun exploration district, Ganguyi oilfield is located in the southeast of Shanbei slope belt, Ordos basin. According to the study of outcrop, drilling cores and thin sections of rocks, and the paleomagnetic orientation method of the drilling cores, acoustic emission experiments to determine the tectonic, structural fractures of the study area carried out a detailed qualitative-quantitative observations describe and statistics.The results show that, the Chang6reservoir fractures development, horizontal seam and high angle fractures are widely distributed. Horizontal fracture is mainly distributed in the sand in the lower part, closely related to the bedding surface of mica mineral; the development of high-angle fractures and sand thickness was negatively correlated with the direction of the main east-west and north-east to the main. Most of the fractures in the form of a potential seam under the original conditions of the underground reservoir.But in the fracturing process, the artificial fractures priority along the natural fracture distributionAccording to the Chang6Low Permeability Reservoir, geological features, combined with the characteristics of natural fractures and fracture development, the proposed linear injection of a Rectangular Well development, parallel to the crack direction (NE) injection, vertical cracks in the direction offlooding, wells row parallel to the direction of crack direction; injection timing of the leading injection, water injection for moderate injection; non-fracture direction (north-east) oil wells, connection wells may be appropriate to increase the scale of fracturing, and the direction of fracture The wells should be properly controlled fracturing scale in order to prevent the rapid injection water into the reservoir to produce flooding.
Keywords/Search Tags:Ordos basin, Gutun area, Chang6oil-bearing formation, Crack, Paleomagnetism, Acoustic emission
PDF Full Text Request
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