While drilling valve system

Patent metadata

Field	Value
Publication number	US-10184315-B2
Application number	US-201615232858-A
Country	US
Kind code	B2
Filing date	Aug 10, 2016
Priority date	Nov 14, 2012
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A system includes a valve subassembly configured to be disposed along an internal flowline exit of a first internal flowline within a downhole drilling module. The valve subassembly includes an active valve configured to regulate flow of a fluid through the internal flowline exit and a passive valve configured to be passively controlled based on a differential pressure between a first volume of the downhole drilling module and a second volume surrounding the downhole drilling module.

First claim

What is claimed is:

1. A system, comprising:
a valve subassembly disposed within a downhole tool module and at an internal flowline exit of an internal flowline of the downhole tool module, wherein the valve subassembly comprises:
a first valve configured to regulate flow of a formation fluid through the internal flowline exit;
a hydraulic circuit configured to actuate the first valve, wherein the hydraulic circuit comprises:
a flowline piston configured to be actuated by a fluid pressure within the internal flowline;
a solenoid configured to regulate a hydraulic fluid flow within the hydraulic circuit; and
a valve piston coupled to the first valve, wherein the valve piston is configured to be actuated by the hydraulic fluid flow; and

a leak valve disposed along the internal flowline, wherein the leak valve is configured to at least partially direct flow of the formation fluid to the flowline piston.

2. The system of claim 1 , wherein the valve subassembly comprises a bypass valve disposed along the internal flowline, wherein the bypass valve is configured to at least partially direct flow of the formation fluid around the leak valve and to the first valve.

3. The system of claim 1 , wherein the valve piston is configured to actuate the first valve when the solenoid is activated.

4. The system of claim 1 , wherein the internal flowline exit extends to a first volume defined by a collar surrounding the downhole tool module, an annulus surrounding the collar when the downhole tool module is disposed within a wellbore, or a second internal flowline.

5. The system of claim 1 , wherein the first valve comprises a mud valve.

6. The system of claim 1 , wherein the downhole tool module is configured for conveyance within a wellbore by at least one of a wireline or a drillstring.

7. The method of claim 1 , comprising at least partially directing flow of the formation fluid around the leak valve and to the first valve via a bypass valve of the valve subassembly disposed along the internal flowline.

8. A method, comprising:
providing a valve subassembly within a downhole tool module and at an internal flowline exit of an internal flowline of the downhole tool module;
regulating flow of a formation fluid through the internal flowline exit via a first valve of the valve subassembly;
actuating the first valve via a hydraulic circuit, wherein the hydraulic circuit comprises:
a flowline piston configured to be actuated by a fluid pressure within the internal flowline;
a solenoid configured to regulate a hydraulic fluid flow within the hydraulic circuit; and
a valve piston coupled to the first valve, wherein the valve piston is configured to be actuated by the hydraulic fluid flow; and

at least partially directing flow of the formation fluid to the flowline piston via a leak valve of the valve subassembly disposed along the internal flowline.

9. The method of claim 8 , comprising actuating the first valve when the solenoid is activated.

Assignees

• Schlumberger Technology Corp

Inventors

• Harms Kent David
• Murphy Jeremy T
• Stucker Michael J
• Brennan Iii William E
• Hoefel Albert
• Villareal Steven G
• Pop Julian J

Classifications

• E21B17/1078

  Stabilisers or centralisers for casing, tubing or drill pipes (E21B17/1007 - E21B17/1064 take precedence) · CPC title

• E21B21/10

  Valve arrangements in drilling-fluid circulation systems · CPC title

• E21B21/103

  Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus (valves specifically for maintaining circulation of drilling fluid while connecting or disconnecting tubular joints E21B21/019) · CPC title

• E21B34/14

  operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools {(E21B34/066 takes precedence)} · CPC title

• E21B49/00

  Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells · CPC title