Multi-Zone Single Trip Well Completion System

Abstract

A well completion system having (i) a completion assembly; (ii) a service tool positioned within the completion assembly, wherein the service tool includes a substantially straight bore central passage from an upper end of the service tool to a lower end of the service tool; and (iii) a one-way valve positioned in an assembly annulus formed between the service tool and an inner surface of the completion assembly.

1 . A well completion system comprising:
 a. a completion assembly;   b. a service tool positioned within the completion assembly, wherein the service tool includes a substantially straight bore central passage from an upper end of the service tool to a lower end of the service tool; and   c. a one-way valve positioned in an assembly annulus formed between the service tool and an inner surface of the completion assembly.   
     
     
         2 . The well completion system of  claim 1 , further comprising a work string having an inner diameter being connected to the completion system and the service tool's central passage having approximately the same diameter as the work string's inner diameter. 
     
     
         3 . The well completion system of  claim 1 , wherein the one-way valve is a reverse bypass valve allowing fluid flow in an uphole to downhole direction, but substantially blocks flow in a downhole to uphole direction. 
     
     
         4 . The well completion system of  claim 3 , wherein the reverse bypass valve comprises: (i) a series of apertures in a valve body; and (ii) a flexible material movable away from the apertures in response to downhole fluid flow in the assembly annulus and movable against the apertures in response to uphole fluid flow in the assembly annulus. 
     
     
         5 . The well completion system of  claim 4 , wherein the valve body is substantially tubular and the apertures positioned circumferentially around the valve body. 
     
     
         6 . The well completion system of  claim 5 , wherein a flow path through the tubular body transitions from an outer surface of the body, to an inner surface of the body, and back to the outer surface of the tubular body. 
     
     
         7 . The well completion system of  claim 5 , wherein the tubular body has one or more seals on an outer surface sized to engage a seal bore formed on an inner surface of the completion assembly. 
     
     
         8 . The well completion system of  claim 7 , wherein the inner surface of the completion assembly has at least one section comprising a seal bore and at least one section not having a seal bore, wherein fluid in the assembly annulus may flow in an uphole or downhole direction past the reverse bypass valve when the valve is in the section not having a seal bore. 
     
     
         9 . The well completion system of  claim 1 , wherein the one-way valve allows fluid flow in an annulus between the completion assembly and the service tool without substantial narrowing of the central passage of the service tool. 
     
     
         10 . The well completion system of  claim 1 , wherein the completion assembly includes a tubing wall and a treating aperture is formed in the tubing wall such that the treating aperture is openingly closed by a treating sleeve internal to the tubing wall. 
     
     
         11 - 19 . (canceled) 
     
     
         20 . A well completion system comprising:
 a. a tubular completion assembly including multiple production zones, each production zone further comprising:
 (i) a zonal isolation packer; 
 (ii) a screen wrapped, closeable monitoring port; 
 (iii) a closeable treating port below the monitoring port; and 
 (iv) a screen wrapped, pressure activated valve below the treating port. 
   
     
     
         21 . The well completion system of  claim 20 , wherein sliding sleeves are used to selectively close the treating port and the monitoring port. 
     
     
         22 . The well completion system of  claim 20 , wherein each zone includes an isolation packer above the monitoring port and an isolation packer below the pressure activated valve. 
     
     
         23 . The well completion system of  claim 20 , wherein each zone includes a reduced diameter seal bore. 
     
     
         24 . The well completion system of  claim 20 , wherein the completion assembly further comprises (i) a shifting tool activation mechanism below a lowermost zone and (ii) a shifting tool de-activation mechanism above an uppermost zone. 
     
     
         25 - 29 . (canceled) 
     
     
         30 . A method of logging a wellbore having a completion system therein, comprising the steps of:
 a. positioning a completion assembly in the wellbore, including a service tool within the completion assembly, wherein the service tool includes a substantially straight bore central passage;   b. inserting a logging tool through the straight bore central passage and logging the wellbore at selected positions along the length of the straight bore central passage of the service and/or below the service tool.   
     
     
         31 . The method of logging a wellbore of  claim 30 , wherein a bottom of the service tool is raised at least as high as an approximate top of a zone being logged prior to logging the zone. 
     
     
         32 . The method of logging a wellbore of  claim 30 , wherein the completion system further comprises a one-way valve positioned in an assembly annulus formed between the service tool and an inner surface of the completion assembly and the logging tool passes the one-way valve while traveling through the service tools central passage. 
     
     
         33 . The method of logging a wellbore of  claim 31 , wherein the zone is logged after treating of the zone without moving the service tool below the zone. 
     
     
         34 . The method of logging a wellbore of  claim 32 , wherein the one-way valve further comprises: (i) a series of apertures in a valve body; and (ii) a flexible material movable away from the apertures in response to downhole fluid flow in the assembly annulus and movable against the apertures in response to uphole fluid flow in the assembly annulus. 
     
     
         35 - 67 . (canceled)