US2013306316A1PendingUtilityA1

Separable completion architecture

43
Assignee: SCHLUMBERGER TECHNOLOGY CORPPriority: May 21, 2012Filed: May 7, 2013Published: Nov 21, 2013
Est. expiryMay 21, 2032(~5.8 yrs left)· nominal 20-yr term from priority
Inventors:Dinesh R. Patel
E21B 31/16E21B 17/02E21B 17/06
43
PatentIndex Score
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Claims

Abstract

A technique facilitates performance of a work over on a completion used in a wellbore. The completion comprises an upper completion coupled with a lower completion by a mandrel and a latch. When a work over is to be performed, the upper completion is separated by moving a cutter device down along the mandrel and operating the cutting device to sever the mandrel. Once the mandrel has been severed, the latch may be activated to release the upper completion for removal.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for utilizing a downhole completion system, comprising:
 coupling an upper completion with a lower completion via a latch and a mandrel;   deploying the upper completion and the lower completion downhole into a wellbore in a single trip; and   separating the upper completion from the lower completion by cutting transversely through the mandrel and releasing the latch.   
     
     
         2 . The method as recited in  claim 1 , wherein separating comprises cutting through the mandrel with an explosive. 
     
     
         3 . The method as recited in  claim 1 , wherein separating comprises cutting through the mandrel with a chemical cutter. 
     
     
         4 . The method as recited in  claim 1 , wherein separating comprises cutting through the mandrel with a mechanical cutter. 
     
     
         5 . The method as recited in  claim 1 , wherein coupling comprises coupling with the latch via a collet having collet fingers held radially outward into engagement with a latch profile. 
     
     
         6 . The method as recited in  claim 1 , wherein coupling comprises coupling with the latch via a collet having collet fingers held radially inward into engagement with a latch profile. 
     
     
         7 . The method as recited in  claim 1 , wherein separating comprises lifting the upper completion to release the latch after cutting transversely through the mandrel. 
     
     
         8 . The method as recited in  claim 1 , wherein coupling comprises coupling via the mandrel in the form of a tubing. 
     
     
         9 . The method as recited in  claim 1 , further comprising coupling a plurality of control lines with a hydro-electric wet connect. 
     
     
         10 . The method as recited in  claim 9 , wherein separating comprises separating the hydro-electric wet connect and the plurality of control lines. 
     
     
         11 . A method for performing a work over on a completion, comprising:
 moving a cutter device down along an interior of a tubing coupling an upper completion with a lower completion in a wellbore;   operating the cutter device within the tubing to sever the tubing; and   removing the upper completion from the wellbore.   
     
     
         12 . The method as recited in  claim 11 , further comprising lifting the upper completion after severing the tubing to release a latch. 
     
     
         13 . The method as recited in  claim 11 , further comprising lifting the upper completion after severing the tubing to release a collet of a latch. 
     
     
         14 . The method as recited in  claim 12 , further comprising separating communication lines at a wet connect. 
     
     
         15 . The method as recited in  claim 12 , further comprising separating electric and hydraulic communication lines at a hydro-electric wet connect. 
     
     
         16 . The method as recited in  claim 11 , wherein moving comprises moving an explosive cutter device. 
     
     
         17 . The method as recited in  claim 11 , wherein moving comprises moving a mechanical cutter device. 
     
     
         18 . A system, comprising:
 a lower completion;   an upper completion; and   a coupling system coupling the upper completion to the lower completion, the coupling system having a latch and a mandrel with a cut-through region, the latch and the mandrel cooperating such that cutting the mandrel at the cut-through region severs the mandrel into a plurality of pieces and enables release of the latch.   
     
     
         19 . The system as recited in  claim 18 , further comprising a hydro-electric wet connect releasably coupling a plurality of control lines extending from the upper completion to the lower completion. 
     
     
         20 . The system as recited in  claim 18 , further comprising a cutter device deployed along an interior of the mandrel.

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