Abstract
This paper establishes the model of sandstone, porosity and permeability on single well in allusion to 10 highly deviated and fractured wells in deep oil and gas reservoirs of Jidong Oilfield, which forms a numerical simulation method of highly deviated and fractured wells in deep oil and gas reservoirs of Jidong Oilfield. The numerical simulation results of highly deviated and fractured wells productivity in deep oil and gas reservoirs are given out under different layers (layer ES1, layer ES3, layer ED2,and layer ED3), different deviation angles(60° and 75°), different fracture parameters and producing pressure drops. Through the comparison with testing data getting from exploration wells, we know that the calculation results of numerical simulation are consistent with practical testing results.
Highlights
Large-scale hydraulic fracturing of highly deviated and horizontal wells is the most effective method to develop low permeability sandstone and carbonate reservoir, tight oil and gas reservoir, unconventional oil and gas reservoir [1,2,3]
The computational difficulties of numerical simulation of highly deviated and fractured wells are mainly reflected in deviation angle, long-term flow conductivity, the processing of natural fracture, etc [6,7,8]
This paper forms a deviated and fractured wells productivity numerical simulation method of natural fracture development formation in deep oil and gas reservoirs, which provides a basis for the optimization design of the fracturing construction parameters and the evaluation of fracturing effect on highly deviated wells, so as to guide the actual field work for oilfield
Summary
Large-scale hydraulic fracturing of highly deviated and horizontal wells is the most effective method to develop low permeability sandstone and carbonate reservoir, tight oil and gas reservoir, unconventional oil and gas reservoir [1,2,3]. This paper forms a deviated and fractured wells productivity numerical simulation method of natural fracture development formation in deep oil and gas reservoirs, which provides a basis for the optimization design of the fracturing construction parameters and the evaluation of fracturing effect on highly deviated wells, so as to guide the actual field work for oilfield. Single well logging interpretation, establish the geological models based on single well sandstonesection distribution, which provides the basis for numerical simulation. For 10 representative highly deviated wells of different layers in deep oil and gas reservoirs of Jidong Oilfield, on the basis of porosity and permeability deriving from single well logging interpretation, establish the geological models based on single well sandstone section distribution, which provides the basis for numerical simulation
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