DIAGNOSIS SYSTEM FOR HYDRAULIC FRACTURING PROCESSES AND METHOD FOR ITS OPERATION Russian patent published in 2023 - IPC E21B47/95 E21B47/14 E21B43/26 

FIELD: oil production.

SUBSTANCE: system for diagnosing hydraulic fracturing processes by combining reflected waves and vibration noise logging is proposed, which consists of a casing string located inside the formation, a string of well production tubing sections is located in the axial direction inside the casing string, a container is located on the string of well production tubing sections, where a downhole pressure sensor is placed connected to the wellhead with a cable. A wellhead is located on the surface, to which a receiving station with a surface pressure sensor, an accelerometer, and a measuring complex, also located on the surface, are connected, which includes a decoder, as well as a single-channel analog-to-digital converter and a computer processing unit. A method of operation of this system is also proposed, in which a combination of reflected waves and vibration noise logging is used, while hydraulic fracturing is performed in the well, vibration registration created during the hydraulic fracturing operation, registration of waves reflected from hydraulic fracturing in real time and analysis of the location of vibration events and wave reflections from hydraulic fractures.

EFFECT: increased efficiency of the method and the reliability of the system for monitoring well operations while increasing the reliability of diagnosing the state of the reflection object.

10 cl, 6 dwg