A Study On Deconvolution Well Test Interpretation Of SRV-fracturing Horizontal Well

The reservoir permeability of SRV fractured horizontal Wells is very low,and the complete flow state of fluid in the formation cannot be obtained by shut-in for a long time.Therefore,the data of a single well test pressure recovery test section cannot explain the effective permeability of the reservoir,and the effective half-length of hydraulic fractures cannot be determined.In addition,the wellbore reservoir effect tends to conceal the flow pattern in early fractures.In the absence of the flow pattern in early fractures and the medium-term radial flow pattern,if the test curve is forced to fit,the parametric solution with non-unique results and too large deviation can be obtained.In view of these problems,the mathematical model of unsteady seepage flow in SRV fractured horizontal Wells and the analysis method of deconvolution test are considered to obtain the test curve of the whole test time through deconvolution method.Therefore,the interpretation of deconvolution test for SRV fractured horizontal Wells is studied.Based on the mechanism of fracturing horizontal well unstable seepage volume,volume is established and solved the fracturing of horizontal Wells unstable seepage flow mathematical model,dynamic volume fracturing horizontal well pressure calculation method of fracturing horizontal well mapped the volume five area model of typical well testing curve,analyses the volume fracturing horizontal well five area model of well test curves of morphological characteristics.The flow mode of SRV fractured horizontal Wells is mainly linear flow mode.Based on the Duhamel principle,by improving the Schroeter deconvolution solution of the mathematical model,implements with short-term pressure restore well test data and long-term production volume fracturing horizontal well transient pressure response data inversion process of history,this paper discusses the deconvolution applications to consider in the process of the main points,analyzes the original formation pressure,the error between the output and the pressure curve smoothness and influence factors on the deconvolution results,in order to deal with data selection and parameters in the application process of fitting.Based on the modern well test interpretation method for deconvolution method of well test interpretation,on the basis of the conventional explanation for deconvolution of well test curve fitting,get a dynamic parameter interpretation results,through specific steps guide fracturing of horizontal well test data interpretation,actual volume due to the transformation of deconvolution is land pressure well test curve,should be in accordance with the land pressure curve in the process of analysis to analysis.The field measured data of SRV fractured horizontal Wells are interpreted using the proposed deconvolution well test analysis method,and the short-term pressure recovery test data can also be used to calculate the fracture and reservoir dynamic parameters,so as to quantitatively evaluate the hydraulic fracturing effect of SRV fractured horizontal Wells.The deconvolution well test interpretation method provides theoretical basis and technical support for obtaining accurate reservoir characteristic parameters,understanding and understanding reservoir dynamic characteristics.