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Open Cavity in a Pocket of a Downhole Tool String Component

a tool string and pocket technology, applied in the direction of drilling casings, drilling pipes, borehole/well accessories, etc., can solve the problems of extreme temperatures and pressure on drilling and/or production equipment, and the effect of potentially damaging forces on drilling devices

Inactive Publication Date: 2008-08-28
SCHLUMBERGER TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a downhole tool string component that has a pocket for receiving downhole instrumentation. The pocket is sealed from outside debris by a covering attached to the outer diameter of the component. The pocket has a cavity with a unique shape, such as a step or rounded borders, and the cavity may contain a portion of the downhole instrumentation and an electrically conductive conduit in electrical communication with the instrumentation. The covering may be a sleeve or plate fastened to the outer diameter of the tubular body and may have grooves that stretch and flex with the tubular body. The downhole tool string component may be used in drilling, production, or other downhole applications.

Problems solved by technology

Harsh downhole environments may subject downhole devices to extreme temperatures and pressures.
Further, drilling and / or production equipment may be subjected to potentially damaging forces, such as tensile loads from the weight of the drill string, bending, thermal expansion, vibration, and torque from the rotation of a drill string.

Method used

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  • Open Cavity in a Pocket of a Downhole Tool String Component
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  • Open Cavity in a Pocket of a Downhole Tool String Component

Examples

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Embodiment Construction

[0026]FIG. 1 is an embodiment of a tool string 100 suspended by a derrick 101. A bottom-hole assembly 102 is located at the bottom of a bore hole 103 and comprises a drill bit 104. As the drill bit 104 rotates downhole the tool string 100 advances farther into the earth. The tool string may penetrate soft or hard subterranean formations 105. The bottom-hole assembly 102 and / or downhole components may comprise data acquisition devices which may ether data. The data may be sent to the surface via a transmission system to a data swivel 106. The data swivel 106 may send the data to the surface equipment. Further, the surface equipment may send data and / or power to downhole tools and / or the bottom-hole assembly 102.

[0027]Electronic equipment and / or other downhole instrumentations may be disposed within the downhole tools, as in the embodiment of FIG. 2. The electronic equipment may be disposed within pockets 200 formed in an outer diameter 201 of a downhole tool string component 202. The...

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Abstract

A downhole tool string component, having a tubular body with an inner and outer diameter. A pocket is formed in the outer diameter and is adapted to receive downhole instrumentation. A covering is attached to the outer diameter of the component and is adapted to seal the pocket from outside debris, the pocket having a bottom floor and a plurality of side walls. An open cavity is formed in at least one of the side walls.

Description

BACKGROUND OF THE INVENTION[0001]Recent advances in downhole telemetry systems have enable high speed communication between downhole devices and the earth's surface. With these high speed communication abilities, more downhole devices may be utilized in downhole applications. Harsh downhole environments may subject downhole devices to extreme temperatures and pressures. Further, drilling and / or production equipment may be subjected to potentially damaging forces, such as tensile loads from the weight of the drill string, bending, thermal expansion, vibration, and torque from the rotation of a drill string.[0002]U.S. Patent Publications 2005 / 0161215 and 2005 / 0001735, both to Hall, et al; which are both incorporated herein by reference for all that they contain; disclose a connection for retaining electronic devices within a bore of a downhole tool. The connection transfers a portion of the makeup load away from the electronic devices.[0003]U.S. Pat. No. 6,075,461 issued Jun. 13, 2000...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B29/02
CPCE21B47/12E21B47/01E21B47/017
Inventor HALLDAHLGREN, SCOTTTURNER, PAULA
Owner SCHLUMBERGER TECH CORP