Rotary check valve

Patent metadata

Field	Value
Publication number	US-9915354-B2
Application number	US-201414577710-A
Country	US
Kind code	B2
Filing date	Dec 19, 2014
Priority date	Dec 19, 2014
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A rotary check valve is disclosed having sealing surfaces between two sealing members that engage with a rotating shearing motion. The rotating shearing motion may shear debris between the sealing members and minimize or eliminate blockage of fluid passageways in the sealing members. In a closed position, the upper sealing member and lower sealing member are rotated such that fluid passageways in the upper sealing member and fluid passageways in the lower sealing member are not aligned and blocked by the sealing surfaces. The sealing members of the rotary check valve may be biased to a closed position via a spring.

First claim

What is claimed is:

1. A system, comprising:
a downhole tool comprising a pump;
a valve coupled to the pump, the valve comprising:
a housing, the housing comprises a first pin and a second pin;
a body member disposed in the housing;
a first rotating member disposed in the body member and having a first sealing surface and a first fluid passageway, the first rotating member comprising a first helical groove configured to receive the first pin, wherein movement of the pin along the helical groove correlates to rotation of the first rotating member between a closed position and an open position;
a second rotating member disposed in the body member and having a second sealing surface and a second fluid passageway, wherein the second rotating member is coupled to a stem member, and wherein the stem member comprises a second helical groove configured to receive the second pin, wherein movement of the second pin along the second helical groove correlates to rotation and translation of the second rotating member;
wherein when the valve is in a closed position, the first sealing surface the first sealing surface engages the second sealing surface to close the first fluid passageway; and
wherein when the valve is in an open position, the first rotating member is rotated to open the first fluid passageway.

2. The system of claim 1 , comprising a spring disposed in the housing and configured to bias the first rotating member to a respective closed position.

3. The system claim 1 , wherein the spring is configured to enable translation of the first rotating member to a respective open position when a fluid pressure compresses the spring.

4. The system claim 1 , wherein the second rotating member comprises a second fluid passageway and in a respective open position, the first rotating member and second rotating member are rotated to align the first fluid passageway with the second fluid passageway.

5. The system of claim 1 , wherein the stem member and the second rotating member are configured to translate along an axis and rotate around the axis when the valve is moved between the closed position and the open position.

6. The system claim 1 , wherein the second rotating member is coaxial with the first rotating member.

7. The system of claim 1 , wherein the body member and the first rotating member are configured to translate along an axis and rotate around the axis when the valve is moved between the closed position and the open position.

Assignees

• Schlumberger Technology Corp

Inventors

• Kelly Robert
• Djibo Karidja Louise-Olivia
• Harms Kent D
• Luckett Walter

Classifications

• F16K15/025

  the valve being loaded by a spring (F16K15/03 - F16K15/12 take precedence) · CPC title

• F16K3/0254 Primary

  being operated by particular means · CPC title

• F16K3/08

  with circular plates rotatable around their centres · CPC title

• E21B34/08

  responsive to flow or pressure of the fluid obtained (E21B34/10 takes precedence) · CPC title