Fracturing Technology Research And Development Program Research Of Chang8Low Permeability Reservoir In Zhenjing Oil Field

In present paper, a contrast study includes well test effect, production injection contridiction, geology difference, and process characteristics on ZhenJing district and nearby olifield has been proposed, the research focuses on HH105well district, on which well log explanation and reservoir evaluation for HH105well field is given based on geologic information and well log information. We have expended the research on ZhengJing District fissured fracturing and integral fracturing by forming a fracturing projectZhenJing district consists of estuary dam and channel, as an influence factor, phase boundary affect the expending of the artificial fracture. A conclusion has been made under the drawdown curve analysis that the risk of natural fractures going up along with the deduction of the reservoir thickness. Based on the multiple fracture mechanism study, the goals and technology characteristics of various well and stratigraphic position fissured fracturing is discussed. We had done four groups fracturing design and field experiments and a promising result gotten finally.Due to the low permeability of matrix, and the exist of the non-darcy flow, a selective problem appears to zhenjing oilfield water injection development. The flooding and channeling problem would rise if we reduce the well spacing, increase the fracture length and water intake per unit thickness, meanwhile, it is difficult to see the flood effectiveness if we increase the well space, reduce the facture length and reduce the water intake per unit thickness. The balance of these parameters need to be find out in order to rise up the recovery ratio or experiments with smaller molecule gas injection method.