The New Technology Of Fracturing Research In Chang6 Oil Layer Of Qili Cun Oilfield

QiLicun oilfield is located in the eastern Shanbei slope of Ordos basin, which source rocks and reservoir rocks is yanchang group in Upper Triassic, and mainly exploited horizon is chang6 oil layer of yanchang group. The reservoir rocks are shallow burying, poor physical properties, serious formation pressure failure, which is typical shallow burying, low pressure, low porosity, low permeability reservoir. Horizontal seam more prolific in fracturing process. "More than a layer seam"- the development of fracturing has obtained the good effect. Oilfield formatted more than one layer seam fracturing and cased well fracturing technology in recent years. But there are still cracks number blindly, construction technology and parameter design that is not reasonable and the field problems such as fracture monitoring technology.In order to further improve the oil reservoir development effect, to solve the problems in production, it is need to evaluation the early fracturing effect again, and it is realization that the reservoir, fracture, water injection in the studied area. On the basis of summary and analysis in this paper fully and absorb the existing experience of domestic oilfield fracturing development, carefully study the main geological characteristics of reservoir in the study area, then carry out the fine description of reservoir and fracture system, combined with the characteristics of Yanchang Formation Chang 6 oil-bearing bed shallow reservoir fracturing horizontal seam,the research from the the mechanism of fracture formation, to carry out more than a layer seam hydraulic fracturing scheme research in the study area, thereby improve more than one layer seam fracturing technology, make the development of oil field more than a layer seam fracturing technology policy, the last to evaluation the develop fracturing effect in the studied area. In the current application situation, from the Angle of construction success rate and reduce the cost put forward its own understanding and suggestions, and efficient service for the future oilfield development, improve the ultimate recovery efficiency of oilfield and have laid a solid theoretical basis.