Separable connector for coil tubing deployed systems

• US 6,213,202 B1
• Filed: 09/21/1998
• Issued: 04/10/2001
• Est. Priority Date: 09/21/1998
• Status: Expired due to Term

• Current Assignee: Camco International Inc. (Schlumberger NV)
• Original Assignee: Camco International Inc. (Schlumberger NV)
• Inventors: Read, Dennis M. Jr.
• Primary Examiner(s): SUCHFIELD, GEORGE A
• Application Number:
  US09/158,434
• Time in Patent Office: 932 Days
• Field of Search: 166/55.1, 166/65.1, 166/68, 166/105, 166/106, 166/242.2, 166/242.6, 166/317, 166/375, 166/376, 166/377, 166/384, 166/386, 137/68.14, 137/68.15, 285/3
• US Class Current: 166/55.1
• CPC Class Codes: E21B 17/06 Releasing-joints, e.g. safety joints
• CPC Class Codes: Y10T 137/1662 Tensile or sheer pin or bolt

Abstract

A connector permits separation of a submergible pumping system from its deployment system. The connector includes an upper assembly and a lower assembly that are connected by shear screws. A hydraulic separation mechanism is used to shear the shear screws and separate the upper and lower assemblies from a remote location.

Claims

1. A system for connecting a submergible pumping system to a deployment system and for selectively releasing the submergible pumping system from the deployment system, comprising:

a submergible pumping system;

a coil tubing deployment system comprising;

a coil tubing; and

a power cable disposed within the coil tubing to supply power to operate the submergible pumping system; and

a connector connecting the coil tubing deployment system with the submergible pumping system, the connector having;

an upper connector assembly;

a lower connector assembly attached to the upper connector assembly; and

a separator mechanism that may be remotely actuated to separate the upper connector assembly from the lower connector assembly.

2. The apparatus as recited in claim 1, wherein the separator mechanism comprises a hydraulic line disposed through the upper connector assembly and a discharge area on the lower connector for receiving pressurized hydraulic fluid from the hydraulic line.

3. The apparatus as recited in claim 2, further comprising a shear pin connecting the upper connector assembly to the lower connector assembly.

4. The apparatus as recited in claim 3, further comprising a valve coupled to the hydraulic line to prevent backflow into the hydraulic line upon separation of the upper connector assembly from the lower connector assembly.

5. The apparatus as recited in claim 4, further comprising a hydraulic manifold disposed in the upper connector assembly and including a recess for receiving the valve.

6. The apparatus as recited in claim 5, further comprising a second hydraulic line disposed through the manifold and a second valve coupled to the second hydraulic line.

7. The apparatus as recited in claim 6, further comprising a third hydraulic line disposed through the manifold and a third valve coupled to the third hydraulic line.

8. The apparatus as recited in claim 1, further comprising a plurality of shear pins connecting the upper connector assembly to the lower connector assembly.

9. The apparatus as recited in claim 1, further comprising a plurality of motor conductors that extend through a plug, the plug being separable and having a first plug portion disposed in the upper connector assembly and a second plug portion disposed in the lower connector assembly.

10. A system for connecting a submergible pumping system to a deployment system and for selectively releasing the submergible pumping system from the deployment system, comprising:

a coil tubing deployment system;

a downhole completion; and

a connector connecting the coil tubing deployment system with the downhole completion, the connector having;

an upper connector assembly;

a lower connector assembly;

a shear pin connecting the upper connector assembly to the lower connector assembly; and

a separator mechanism that may be remotely actuated to separate the upper connector assembly from the lower connector assembly, wherein the separator mechanism comprises a hydraulic line disposed through the upper connector assembly and a discharge area on the lower connector for receiving pressurized hydraulic fluid from the hydraulic line.

11. The apparatus as recited in claim 10, further comprising a valve coupled to the hydraulic line to prevent backflow into the hydraulic line upon separation of the upper connector assembly from the lower connector assembly.

12. The apparatus as recited in claim 11, further comprising a hydraulic manifold disposed in the upper connector assembly and including a recess for receiving the valve.

13. The apparatus as recited in claim 12, further comprising a second hydraulic line disposed through the manifold and a second valve coupled to the second hydraulic line.

14. The apparatus as recited in claim 13, further comprising a third hydraulic line disposed through the manifold and a third valve coupled to the third hydraulic line.

15. A system for connecting a submergible pumping system to a deployment system and for selectively releasing the submergible pumping system from the deployment system, comprising:

a coil tubing deployment system;

a downhole completion; and

a connector connecting the coil tubing deployment system with the downhole completion, the connector having;

an upper connector assembly;

a lower connector assembly attached to the upper connector assembly;

a plurality of motor conductors that extend through a plug, the plug being separable and having a first plug portion disposed in the upper connector assembly and a second plug portion disposed in the lower connector assembly; and

a separator mechanism that may be remotely actuated to separate the upper connector assembly from the lower connector assembly, wherein the separator mechanism comprises a hydraulic line disposed through the upper connector assembly and a discharge area on the lower connector for receiving pressurized hydraulic fluid from the hydraulic line.