Remote pressure readout while deploying and undeploying coiled tubing and other well tools
First Claim
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1. A system for estimating pressure at a surface location above a wellbore drilled in an earthen formation, comprising:
- a drill string configured to be conveyed along the wellbore;
a bottomhole assembly (BHA) connected to the drill string, the BHA including a bore flowing fluid between the surface and an annulus surrounding the BHA;
a pressure sensor disposed along the BHA, the pressure sensor having at least one sensing element estimating a pressure parameter of the fluid in the BHA bore;
a power source energizing the pressure sensor at the surface location when the power source and the pressure sensor are at the surface location;
a transponder disposed along the BHA, the transponder being configured to transmit radio frequency (RF) signals representative of the estimated pressure parameter, the transponder being further configured to transmit the RF signals at the surface location; and
a data retrieval module positioned at the surface location and configured to receive the RF signals transmitted by the transponder.
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Abstract
A well tool has a pressure sensor disposed in an interior space. The pressure sensor has at least one sensing element estimating a pressure parameter of a fluid in the interior space and a transponder configured to transmit radio frequency (RF) signals representative of the estimated pressure parameter. A data retrieval module receives the RF signals transmitted by the transmitter.
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Citations
16 Claims
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1. A system for estimating pressure at a surface location above a wellbore drilled in an earthen formation, comprising:
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a drill string configured to be conveyed along the wellbore; a bottomhole assembly (BHA) connected to the drill string, the BHA including a bore flowing fluid between the surface and an annulus surrounding the BHA; a pressure sensor disposed along the BHA, the pressure sensor having at least one sensing element estimating a pressure parameter of the fluid in the BHA bore; a power source energizing the pressure sensor at the surface location when the power source and the pressure sensor are at the surface location; a transponder disposed along the BHA, the transponder being configured to transmit radio frequency (RF) signals representative of the estimated pressure parameter, the transponder being further configured to transmit the RF signals at the surface location; and a data retrieval module positioned at the surface location and configured to receive the RF signals transmitted by the transponder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for estimating a pressure inside a well tool, comprising:
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a well tool configured to be disposed into a wellbore formed in an earthen formation, the well tool having an interior space; a pressure sensor disposed in the interior space, the pressure sensor having at least one sensing element estimating a pressure parameter of a fluid in the interior space and a transponder configured to transmit radio frequency (RF) signals representative of the estimated pressure parameter; and a data retrieval module configured to receive the RF signals transmitted by the transponder; a quick disconnect associated with the well tool, wherein the pressure sensor is positioned to estimate a pressure in the well tool that is proximate to the quick disconnect; and a flow control device associated with the well tool, the flow control device being configured to prevent fluid flow along the well tool to the surface, wherein the pressure sensor is positioned between the quick disconnect and the flow control device.
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10. A method for estimating pressure in a bore of a bottomhole assembly (BHA) connected to a drill string, wherein a fluid flows between the BHA bore and an annulus surrounding the drill string, the method comprising:
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conveying the drill string along a wellbore in a formation; estimating, at the surface, a pressure parameter relating to a fluid in the BHA bore using a pressure sensor in communication with the fluid; providing a power source energizing the pressure sensor at the surface location when the power source and the pressure sensor are at the surface location; transmitting radio frequency (RF) signals representative of the estimated pressure parameter from a transponder in the BHA; and using a data retrieval module to receive, at the surface, the transmitted estimated pressure. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification