Patent ID: 9574443
Date: 2017-02-21
CPC Classifications: E21B

Claim:
1. A method comprising: accessing, at a computing system, response data from an injection test of a subterranean region, the response data comprising pressure data reflecting pressure response of the subterranean region to the injection test, the response data being acquired during a series of injection periods and shut-in intervals of the injection test, each of the injection periods temporally followed by a respective one of the shut-in intervals, the response data comprising respective data corresponding to each of the series of injection periods and shut-in intervals; determining a respective Instantaneous Shut In Pressure (ISIP) value based on the respective data corresponding to the each of the series of injection periods and shut-in intervals; determining a refined ISIP value by manipulating a series of the respective ISIP value for the each of the series of injection periods and shut-in intervals; designing, by operation of the computing system, an injection treatment based on the response data, wherein designing the injection treatment based on the response data includes designing at least one injection rate of the injection treatment taking into account an effect of wellbore friction based on the refined ISIP value; and performing the designed injection treatment, wherein performing the designed injection treatment includes injecting fluid into the subterranean region at the at least one injection rate according to the designed injection treatment.