METHOD FOR DETERMINING PROPERTIES OF A HYDROCARBON RESERVOIR FORMATION AND PRODUCED FLUIDS IN THE PROCESS OF PRODUCTION

摘要

An acoustic signal is recorded at least once, the signal being a response of a wellbore-reservoir system onto acoustic impulses of pressure. A source of the pressure impulses is an electric submersible pump located inside the wellbore. The acoustic signal is recorded at least once by at least one sensor placed in a bottomhole chamber of the wellbore, the sensor measuring at least one physical parameter of the wellbore-reservoir system, which characterizes a process of propagation of the acoustic signal in the wellbore. A mathematical model of propagation of acoustic signals in the bottomhole chamber is created and data obtained by means of modeling are compared with data obtained by means of registering of the acoustic signals. Parameters of the reservoir formation in the mathematical model are adjusted in order to provide for consistency of at least one quantitative physical characteristic of the wellbore-reservoir system obtained by means of modeling with the same quantitative physical characteristic obtained by registration, and properties of the reservoir and of the produced fluids are determined as parameters providing for consistency.