Discussion on Rheology in Petroleum and Nature Gas Teservoir Stimulation

Petroleum and nature gas not only are important resources, but also are important strategic materials of our country. All methods the enhancing the producing degree of petroleum and natural gas reservoir, increasing single well production and extending the stimulation period of validity are important stratagem for petroleum and natural gas exploitation. Fracturing and acidizing are the main methods for stimulation as well as one of representative examples of rheology theory application in engineering. Based on analysis of low permeability reservoir characteristics, the fracturing and acidizing stimulation principles and main controlling factors were discussed. And the mechanical characteristics, chemical reaction and rheological behavior in the stimulation process were reviewed. Furthermore research trends afterwards including the material and fluid rheology in oil and natural gas production process, the deep rock fracture initiation and extension rheology, and the fracturing and acidizing application rheology were also proposed in this paper.