Junction box to secure and electronically connect downhole tools

Patent metadata

Field	Value
Publication number	US-9650843-B2
Application number	US-201213483060-A
Country	US
Kind code	B2
Filing date	May 30, 2012
Priority date	May 31, 2011
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A junction box is disclosed. The junction box is made of a body member defining a first port and a second port, the first port adapted to receive a first portion of a first downhole tool, and the second port adapted to receive a second portion of a second downhole tool, the body member defining an electric chamber intersecting the first port and the second port within the body member; a first mechanical connection on the first port for securing the first downhole tool; a second mechanical connection on the second port for securing the second downhole tool; a first electric connector installed on the first port; a second electric connector installed on the second port; and electric wiring positioned within the electric chamber and connected to the first electric connector and the second electric connector to couple the first electric connector and the second electric connector.

First claim

What is claimed is:

1. A junction box for connecting at least two downhole tools to a section of tubing, the junction box comprising:
a body member defining a first port and a second port, the first port adapted to receive a first portion of a first downhole tool, and the second port adapted to receive a second portion of a second downhole tool, the body member having one or more external surfaces, the first port and the second port having a first end intersecting the one or more external surfaces, a second end positioned within and extending into the body member, and first and second lengths extending between the first end and the second end, the first and second lengths being less than lengths of the first downhole tool and the second downhole tool, the body member defining an electric chamber intersecting the first port and the second port within the body member;
a first mechanical connection on the first port for securing the first downhole tool;
a second mechanical connection on the second port for securing the second downhole tool;
a first electric connector installed on the second end of the first port;
a second electric connector installed on the second end of the second port, wherein the first and second electric connector extends into the second end of the first and second port; and
electric wiring positioned within the electric chamber and connected to the first electric connector and the second electric connector to couple the first electric connector and the second electric connector.

2. The junction box of claim 1 , wherein the body member is integral with a first clamp part of a clamp assembly.

3. The junction box of claim 1 , wherein the body member is separate from a first clamp part of a clamp assembly and adapted to connect to the first clamp part.

4. The junction box of claim 1 , further comprising a first plug, and wherein the body member further defines a read-out port having a first end intersecting the one or more external surfaces and a second end intersecting the electric chamber; a third electric connector installed on the second end of the read-out port, the third electric connector coupled to the electric wiring; and a third mechanical connection on the read-out port for securing the first plug.

5. The junction box of claim 1 , wherein body member is configured for connection to a drill stem testing gauge assembly.

6. An apparatus, comprising:
a first downhole tool;
a second downhole tool;
a carrier tool; and
a junction box connected to the carrier tool, the junction box comprising:
a body member defining a first port and a second port, the first port receiving a first portion of the first downhole tool, and the second port receiving a second portion of a second downhole tool, the body member having one or more external surfaces, the first port and the second port having a first end intersecting the one or more external surfaces, a second end positioned within and extending into the body member, and first and second lengths extending between the first end and the second end, the first and second lengths being less than lengths of the first downhole tool and the second downhole tool, the body member defining an electric chamber intersecting the first port and the second port within the body member;
a first mechanical connection on the first port for securing the first downhole tool;
a second mechanical connection on the second port for securing the second downhole tool;
a first electric connector installed on the second end of the first port and communicating with the first downhole tool;
a second electric connector installed on the second end of the second port and communicating with the second downhole tool, wherein the first and second electric connector extends into the second end of the first and second port; and
electric wiring positioned within the electric chamber and connected to the first electric connector and the second electric connector to couple the first electric connector and the second electric connector.

7. The apparatus of claim 6 , wherein the body member is internal to the carrier tool.

8. The apparatus of claim 6 , wherein the junction box is external to the carrier tool.

9. The apparatus of claim 6 , wherein the junction box further comprising a first plug, and wherein the body member further defines a read-out port having a first end intersecting the one or more external surfaces and a second end intersecting the electric chamber; and wherein the junction box further comprises a third electric connector installed on the second end of the read-out port, the third electric connector coupled to the electric wiring; and a third mechanical connection on the read-out port for securing the first plug.

10. The apparatus of claim 6 , wherein the carrier tool includes a drill stem testing gauge assembly.

11. A method of establishing communication between a first downhole tool and a second downhole tool, comprising the steps of:
connecting the first downhole tool to a first port of a junction box;
connecting the second downhole tool to a second port of the junction box, a body member defining the first port and the second port, the first port and the second port each having a first end and a second end, wherein the first end intersects one or more external surfaces of the body member and the second end is positioned within and extends into the body member, the junction box having a first electric connector in the first port, and a second electric connector in the second port, the first downhole tool having a third electric connector connected to the first electric connector in the first port, and the second downhole tool having a fourth electric connector connected to the second electric connector in the second port; and
connecting the junction box to a carrier tool sized and adapted to be positioned within a well.

Assignees

• Rayssiguier Christophe M
• Schlumberger Technology Corp

Inventors

• Rayssiguier Christophe M

Classifications

• H01R13/6272

  comprising a single latching arm · CPC title

• H01R13/6277

  comprising annular latching means, e.g. ring snapping in an annular groove · CPC title

• F16G11/03

  incorporating resiliently-mounted members for attachment of the cable end · CPC title

• E21B17/026 Primary

  Arrangements for fixing cables or wirelines to the outside of downhole devices · CPC title

• H01R13/623

  Casing or ring with helicoidal groove · CPC title