Freeing Stuck Tubulars In Wellbores
AssigneeSaudi Arabian Oil Company
InventorsAhmad A. Amoudi, Ossama R. Sehsah, Abdulrahman K. Aleid
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Abstract
An apparatus includes a tubular, pressure sensors, expandable pads, a hydraulic chamber, and a computer system. The apparatus can be run in a wellbore. The apparatus is configured to detect whether the tubular is stuck within the wellbore. In response to determining that the tubular is stuck within the wellbore, the apparatus can determine a local of sticking of the tubular in the wellbore and can transmit a signal to the hydraulic chamber to pressurize one or more of the expandable pads, thereby causing the one or more expandable pads to expand and exert a force necessary to free the tubular.
Claims14
An apparatus comprising:
- a tubular;
- three pressure sensors distributed along an outer circumference of the tubular;
- three expandable pads distributed along the outer circumference of the tubular;
- a hydraulic chamber disposed within the tubular, the hydraulic chamber configured to expand each of the expandable pads independently;
- and
- a computer system disposed within the tubular, the computer system comprising:
- a processor;
- and
- a storage medium interoperably coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instructing the processor to perform operations comprising:
- in response to determining that the tubular is stuck within the wellbore:
- determining a locale of sticking of the tubular based on the pressure readings transmitted by the pressure sensors;
- and
- transmitting a pressure signal to cause the hydraulic chamber to pressurize one or more of the expandable pads, thereby causing the one or more expandable pads to expand and exert a force necessary to free the tubular.
A method comprising:
- detecting pressure, by three pressure sensors, at three locations corresponding to a distribution of the three pressure sensors along an outer circumference of a tubular disposed within a wellbore;
- and
- by a computer system disposed within the tubular:
- determining that the tubular is stuck within the wellbore based on the detected pressures;
- in response to determining that the tubular is stuck within the wellbore:
- determining a locale of sticking of the tubular based on the detected pressures;
- determining a force necessary to free the tubular based on the detected pressures;
- determining a pressure necessary in a hydraulic chamber to exert the force necessary to free the tubular;
- and
- transmitting a pressure signal to cause the hydraulic chamber to pressurize one or more expandable pads, thereby causing the one or more expandable pads to expand and exert the force to free the tubular.
A method comprising:
- receiving a plurality of pressure readings from a plurality of pressure sensors distributed along an outer circumference of a tubular disposed within a wellbore;
- determining that the tubular is stuck within the wellbore based on the plurality of pressure readings;
- and
- in response to determining that the tubular is stuck within the wellbore:
- determining a locale of sticking of the tubular based on the plurality of pressure readings;
- and
- transmitting a signal to cause a force to be exerted to free the tubular.
Dependencies are inferred from the claim text.