The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2021
Filed:
Jul. 01, 2016
Schlumberger Technology Corporation, Sugar Land, TX (US);
Artem Valeryevich Kabannik, Novosibirsk, RU;
Schulumberger Technology Corporation, Sugar Land, TX (US);
Abstract
The proposed method relates to hydrocarbon production, particularly to the monitoring of well operations by way of data analysis based on the cepstral analysis of the well pressure data recorded at the wellhead. The method assumes the detection of a hydraulic signal-reflecting object in the well, wherein: a fluid-filled well is provided with fluid enabling propagation of a hydraulic signal; a hydraulic signal source is provided, said source being in fluid communication with the well and designed to generate a hydraulic signal; a pressure sensor is provided, said pressure sensor records the hydraulic signal and being in fluid communication with the well and at least one hydraulic signal source. The hydraulic signal is recorded with the pressure sensor during well operations, and a pressure cepstrogram is obtained and an intense signal is found on the pressure cepstrogram. Then the position of object reflecting the hydraulic signal is detected in the well. A system is proposed for constructing a pressure cepstrogram and detecting a downhole object.