# US 5,706,892 A · Downhole tools for production well control

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- Number: US 5,706,892 A
- Document ID: US5706892A
- Status: Granted
- Kind: A
- Application number: 08/599,324
- Filed: 1996-02-09
- Granted: 1998-01-13
- Earliest claimed: 1995-02-09
- Assignees: Baker Hughes Incorporated
- Inventors: William E. Aeschbacher, Jr.; Michael F. Krejci; David Rothers; Kevin Jones
- Web page: https://patentgrep.com/patent/US5706892A

## CPC

- E21B 47/01: Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B 17/0283: {characterised by the coupling being contactless, e.g. inductive}
- E21B 23/00: Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens or liners E21B43/10)
- E21B 23/03: for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
- E21B 33/10: in the borehole {(sealing the junction between main bore and laterals E21B41/0042)}
- E21B 33/127: with inflatable sleeve (E21B33/122, E21B33/124 take precedence)
- E21B 34/06: in wells
- E21B 34/066: {electrically actuated}
- E21B 34/10: operated by control fluid supplied from outside the borehole
- E21B 34/16: Control means therefor being outside the borehole {(control systems for submerged well heads E21B33/0355)}
- E21B 43/14: Obtaining from a multiple-zone well
- E21B 47/06: Measuring temperature or pressure
- E21B 2200/02: Down-hole chokes or valves for variably regulating fluid flow
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A plurality of electronically controlled downhole tools and systems for use in production wells is presented. These tools and systems include safety valve and pressure monitoring systems, remotely controlled inflation/deflation devices, remotely actuated downhole tool stop systems, remotely controlled fluid/gas control systems, remotely controlled variable choke and shut-off valve systems and a retrievable sensor side pocket mandrel.

## Claims

### Claim 1

A downhole sensor comprising:
a side pocket mandrel having a primary bore and a laterally offset side pocket;
an opening through a shoulder defined by an upper surface of said side pocket;
a removable downhole sensor positioned through said opening and residing in said side pocket.

### Claim 2

A downhole sensor comprising:
a) a side pocket mandrel having a primary bore and a laterally offset side pocket defined by an uphole shoulder, a downhole opening exposing said side pocket to said primary bore and an inner wall separating said side pocket from said primary bore;
b) an opening in said shoulder for receiving a sensor connector;
c) a sensor positioned in said side pocket and adapted to operably couple with said sensor connector.

### Claim 3 (depends on 2)

A downhole sensor as claimed in claim 2 wherein said side pocket is adapted to sealingly receive said sensor connector.

### Claim 4 (depends on 3)

A downhole sensor as claimed in claim 3 wherein said sensor connector includes a male inductive coupler adapted to be received by a female inductive coupler within said sensor in said side pocket to provide an inductive couple between said sensor connector and said sensor.

### Claim 5 (depends on 3)

A downhole sensor as claimed in claim 3 wherein said connector assembly is a conductive connector adapted to create an electrical contact with said sensor in said side pocket.

### Claim 6 (depends on 3)

A downhole sensor as claimed in claim 3 wherein said opening in said shoulder includes a first side of a metal-to-metal seal and said connector includes a second side of the metal-to-metal seal and wherein said first and second sides are adapted to mate to form a high pressure seal.

### Claim 7 (depends on 2)

A downhole sensor as claimed in claim 2 wherein said side pocket is disposed in parallel with said primary bore.