Apparatus, methods and systems for downhole testing of electronic equipment

Patent metadata

Field	Value
Publication number	US-9791587-B2
Application number	US-201514593793-A
Country	US
Kind code	B2
Filing date	Jan 9, 2015
Priority date	Jan 9, 2015
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A carrier device is provided for temporary installation downhole in a well. The carrier device is a robust device that is divided by a pressure bulkhead into a first section having an inductive coupler, power electronics, and a telemetry unit, typically all formed using multi-chip-module type electronics, and a second section with at least one test device typically using printed circuit board technology that may include sensors or transducers coupled to a communications bus and/or a power line that extends to the first section via the pressure bulkhead. The carrier further includes a mechanism that permits the carrier to be pulled out of the wellbore, and may include a mechanical locating element, typically adjacent the inductive coupler that permits the carrier to be located in the wellbore so that the inductive coupler will be located adjacent an inductive coupler in, on, or behind a liner or casing of the wellbore.

First claim

What is claimed is:

1. A carrier device for use in a wellbore completion, comprising:
a first section including an inductive coupler, power electronics coupled to the inductive coupler, and a telemetry unit, coupled to the power electronics and including at least one communications chipset;
a second section including at least one test device said at least one test device includes a processor and at least one of a sensor and a transducer;

and
at least one pressure bulkhead coupled to and dividing said first section and said second section, wherein said at least one test device is coupled to at least one of a communications bus, and a power line that extends to said first section via said at least one pressure bulkhead, and
said first section, said second section, and said at least one pressure bulkhead define a fluid flow path.

2. A carrier device according to claim 1 , further comprising:
a coupling element adapted to permit said carrier device to be pulled out of the wellbore completion.

3. A carrier device according to claim 2 , wherein:
said coupling element is a fishing neck.

4. A carrier device according to claim 1 , wherein:
said first section further includes a mechanical locating element.

5. A carrier device according to claim 4 , wherein:
said mechanical locating element is adjacent said inductive coupler.

6. A carrier device according to claim 1 , wherein:
said inductive coupler, power electronics and said telemetry unit comprise multi-chip-module type electronics, and
said at least one test device comprises printed circuit board type electronics.

7. A carrier device according to claim 1 , wherein:
said at least one communications chipset and said at least one test device communicate via said communications bus according to a standardized communications protocol.

8. A carrier device according to claim 1 , wherein:
said at least one of said sensor and said transducer communicates with said fluid flow path.

9. A carrier device according to claim 1 , wherein:
said at least one test device includes a plurality of test devices.

10. A carrier device according to claim 1 , wherein:
said at least one pressure bulkhead includes at least one pin coupled to said at least one of said communications bus and said power line, said at least one pin for causing said at least one of said communications bus and said power line to extend to said first section.

11. A carrier device according to claim 1 , wherein:
said at least one pressure bulkhead includes a first pressure bulkhead at an end of said first section and a second pressure bulkhead at an end of said second section, said first pressure bulkhead contacting said second pressure bulkhead.

Assignees

• Schlumberger Technology Corp

Inventors

• Dyer Stephen
• Dufour Yann
• Teherian Reza

Classifications

• G01V3/28 Primary

  using induction coils · CPC title

• E21B47/122

  Fixed Constructions · mapped topic

• G01V3/24 Primary

  using AC · CPC title

• E21B47/01

  Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like · CPC title

• E21B47/00

  Survey of boreholes or wells (monitoring pressure or flow of drilling fluid E21B21/08) · CPC title