Isolator

Patent metadata

Field	Value
Publication number	US-2018155992-A1
Application number	US-201615737627-A
Country	US
Kind code	A1
Filing date	Jun 30, 2016
Priority date	Jun 30, 2015
Publication date	Jun 7, 2018
Grant date	—

Abstract

An isolator ( 200 ) has an outer housing ( 224 ) comprising an outer housing bore ( 234 ), an inner member ( 240 ) received coaxially within the outer housing ( 224 ), a precompressed compression compliance component (CCC) ( 230 ) disposed between the outer housing ( 224 ) and the inner member ( 240 ), the CCC ( 230 ) being configured to bias the inner member ( 240 ) in an axial direction, and a precompressed rebound compliance component (RCC) ( 232 ) disposed between the outer housing ( 224 ) and the inner member ( 240 ), the RCC ( 232 ) being configured to bias the inner member ( 240 ) in an opposite axial direction.

First claim

What is claimed is:

1 . An isolator, comprising:
an outer housing comprising an outer housing bore; an inner member received coaxially within the outer housing; a precompressed compression compliance component (CCC) disposed between the outer housing and the inner member, the CCC being configured to bias the inner member in an axial direction; and a precompressed rebound compliance component (RCC) disposed between the outer housing and the inner member, the RCC being configured to bias the inner member in an opposite axial direction.

2 . The isolator of claim 1 , wherein movement of the inner member in the axial direction reduces a compression of the CCC and increases a compression of the RCC and wherein movement of the inner member in the opposite axial direction increases a compression of the CCC and decreases a compression of the RCC.

3 . The isolator of claim 1 , wherein at least one of (1) the CCC is configured to allow fluid to pass between the CCC and the outer housing and (2) the RCC is configured to allow a fluid to pass between the RCC and the outer housing.

4 . The isolator of claim 1 , further comprising:
an upstream endcap attached to an upstream endcap interface of the outer housing; and a ceramic sleeve disposed within the upstream endcap.

5 . The isolator of claim 4 , further comprising a piston carried by the inner member, the piston being movably received within the ceramic sleeve.

6 . The isolator of claim 1 , the outer member comprising a pressure compensation port.

7 . The isolator of claim 1 , further comprising at least one of a drive unit and a drive nut carried by the inner member and disposed between the CCC the RCC.

8 . The isolator of claim 1 , wherein the CCC comprises an axial stiffness higher than an axial stiffness of the RCC.

9 . The isolator of claim 1 , wherein at least one of the CCC and the RCC comprise a non-linear axial stiffness.

10 . A hydrocarbon recovery system (HRS), comprising:
an isolated mass; an excitation source; and an isolator disposed between the isolated mass and the excitation source, the isolator comprising:
an outer housing comprising an outer housing bore;
an inner member received coaxially within the outer housing;
a precompressed compression compliance component (CCC) disposed between the outer housing and the inner member, the CCC being configured to bias the inner member in an axial direction; and
a precompressed rebound compliance component (RCC) disposed between the outer housing and the inner member, the RCC being configured to bias the inner member in an opposite axial direction.

11 . The HRS of claim 10 , wherein the excitation source is a drill bit.

12 . The HRS of claim 10 , wherein movement of the inner member in the axial direction reduces a compression of the CCC and increases a compression of the RCC and wherein movement of the inner member in the opposite axial direction increases a compression of the CCC and decreases a compression of the RCC.

13 . The HRS ( 100 ) of claim 10 , wherein at least one of (1) the CCC is configured to allow fluid to pass between the CCC and the outer housing and (2) the RCC is configured to allow a fluid to pass between the RCC and the outer housing.

14 . The HRS of claim 10 , further comprising:
an upstream endcap attached to an upstream endcap interface of the outer housing; and a ceramic sleeve disposed within the upstream endcap.

15 . The HRS of claim 14 , further comprising a piston carried by the inner member, the piston being movably received within the ceramic sleeve.

16 . The HRS of claim 10 , the outer member comprising a pressure compensation port.

17 . The HRS of claim 10 , further comprising at least one of a drive unit and a drive nut carried by the inner member and disposed between the CCC and the RCC.

18 . The HRS of claim 10 , wherein the CCC comprises an axial stiffness higher than an axial stiffness of the RCC.

19 . The HRS of claim 10 , wherein at least one of the CCC and the RCC comprise a non-linear axial stiffness.

20 . The HRS of claim 10 , wherein the isolator is configured to at least one of attenuate transmission of a shock from the excitation source to the isolated mass, damp a vibration from the excitation source to the isolated mass, and isolate the isolated mass from a vibration emanating from the excitation source.

21 . The HRS of claim 20 , wherein the at least one of the shock from the excitation source and the vibration from the excitation source occur at an excitation frequency selected from the group of frequency ranges consisting of about 10 Hz to about 25 Hz and about 25 Hz to about 100 Hz

Assignees

• Lord Corp

Inventors

• Brown Michael R
• Caraballo Samuel
• Keithly Adam J
• Cune Gregg
• Owens Jonathan M

Classifications

• E21B17/003

  with electrically conducting or insulating means (E21B17/028 and E21B17/023 take precedence) · CPC title

• E21B17/07 Primary

  Telescoping joints for varying drill string lengths; Shock absorbers · CPC title

• F16F13/06

  the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper (F16F13/26 takes precedence) · CPC title

• E21B47/017

  Protecting measuring instruments · CPC title

• E21B47/011

  Fixed Constructions · mapped topic