May 2013
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1 Citation
It is determined that the hydraulic fracturing fractures of Qilicun Oilfield are in horizontal direction by the micro seismic detection analysis of four fractured wells, so the multi-fracture fracturing technology in one oil layer is suitable to Qilicun Oilfield. According to the statistical analysis of the yield of the fractured wells with one-fracture, two-fracture and three-fracture in one layer and the current fracturing construction technology, the parameters of the two-fracture fracturing technology in one layer, such as the fracture length, construction flow rate, sand amount, etc., are optimized by means of previous fracturing operation statistical data and simulation software. The main optimal fracturing parameters of Qilicun Oilfield are determined as following: fracture length is 35~42 m, construction flow rate is 1.8~2.2 m3/min, and sand amount is 64.10~92.30 m3. The yields of the two-fracture well with optimized fracturing parameters, one-fracture well of not optimized fracturing parameters, two-fracture well of not optimized fracturing parameters are compared, and it is shown that, two-fracture well of optimized fracturing parameters has the highest yield and stable yield, which proves the multi-fracture fracturing technology in one oil layer is suitable to Qilicun Oilfield again.