The Mini Frac Test Study Of Tight Sandstone In Hangjinqi Block

Hydraulic fracturing is the necessary stimulation methods for the tight sandstone reservoir,but its treatment effect is often affected by the accuracy of reservoir parameters.Using mini fracturing test can get accurate reservoir parameters,so it's normal that conducting a mini fracturing before the main fracturing operation as an aid to acquire the formation conditions,to facilitate follow-up works orderly.Because of the development difficulties such as structure complex,low production ability,tight reservoir in this Hangjinqi block,this paper summarizes the theory of mini fracturing test analysis and the actual field technology,then chose the suitable way to analysis the block.And use the FracproPT software to analyse the test data of three intervals so as to calculate the accurate parameters.Because each interval has did water-injection test and fracturing-fluid injection test,according to test data we can analyse something: using G function,time square root,log-log chart is a common way to know the close of fracture,multi-fracture,fluid efficiency and so on;use friction analysis method can understand the situation of formation friction.The formation permeability and loss situations can be obtained by using the net pressure match.Based on the analysis results of mini fracturing test,accurate parameters can give a hand to the design and optimization of the subsequent main fracturing operation.Through the analysis of fracture geometry parameter optimization effect,can ensure the effectiveness of hydraulic fracturing,and achieve the goal of economic output.