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Low Cost / Debris Resistant Method to Port a Device to the Annulus

IP.com Disclosure Number: IPCOM000199978D
Publication Date: 2010-Sep-22
Document File: 1 page(s) / 24K

Publishing Venue

The IP.com Prior Art Database

Abstract

A standard pressure/temperature gauge is connected to a gauge carrier which has a standard connection machined on it. The gauge carrier is not ported to the tubing ID as is the standard application. Instead the gauge carrier has a second connection machined opposite the standard gauge connection. The second connection is where the perforated control line will be installed. The gauge carrier is machined in such a manner that there is communication between the standard gauge connection and the second connection machined opposite. The control line has perforations arranged so when it is installed in a slot on the gauge carrier the geometry of the slot prevents debris from entering or obstructing the perforations. The size of individual perforations, the distance between perforations, and the interval of length of perforations can be varied to suit specific applications. The control line is anchored in the slot at the end opposite the connection. In the present design a clamp will secure the control line to the gauge carrier. The clamp is machined to fit over the end of the control line and bolt onto the gauge carrier. The clamp is machined with a thru hole, in line with the control line, so a screw (or other fastener) can fit thru the clamp and thread into the ID of the control line. The screw secures the control line to the clamp and plugs the end of the tube which would otherwise be open and could allow debris into the control line. The attached file illustrates the exising product designs/offerings of Baker Hughes for pressure/temperature gauges and the design discussed above. The existing methods offered by on our pressure/temperature gauge systems to monitor annulus pressure have fewer holes which are closer together and are not "protected" from debris.

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A standard pressure/temperature gauge is connected to a gauge carrier which has a standard connection machined on it. The gauge carrier is not ported to the tubing ID as is the standard application. Instead the gauge carrier has a second connection machined opposite the standard gauge connection. The second connection is where the perforated control line will be installed. The gauge carrier is machined in such a manner that there is communication between the standard gauge connection and the second connection machined opposite. The control line has perforations arranged so when it is installed in a slot on the gauge carrier the geometry of the slot prevents debris from entering or obstructing the perforations. The size of individual perforations, the distance between perforations, and the interval of length of perforations can be varied to suit specific applications. The control line is anchored in the slot at the end opposite the connection. In the present design a clamp will secure the control line to the gauge carrier. The clamp is machined to fit over the end of the control line and bolt onto the gauge carrier. The clamp is machined with a thru hole, in line with the control line, so a screw (or other fastener) can fit thru the clamp and thread into the ID of the control line. The screw secures the control line to the clamp and plugs the end of the tube which would otherwise be open and could allow debris into the control line. The attached file illustrates the exi...