Multi-trip wellbore completion system with a service string

Patent metadata

Field	Value
Publication number	US-2023228175-A1
Application number	US-202117995611-A
Country	US
Kind code	A1
Filing date	Apr 14, 2021
Priority date	Apr 15, 2020
Publication date	Jul 20, 2023
Grant date	—

Abstract

A system includes an outer completion string, an inner service string configured to connect within the outer completion string, and an upper completion. The outer completion string includes at least one isolation packer, a sand control assembly and a gravel pack extension disposed uphole of a washdown shoe in a bottom-most well zone. In a top well zone, the outer completion string includes a latch profile, a female inductive coupler, a gravel pack packer, and a sand control assembly and a gravel pack extension disposed downhole of the gravel pack packer. The inner service string includes, among other components, an inner concentric string that is concentrically arranged within a workstring creating an inner-annulus between the workstring and the inner concentric string. The upper completion includes a male inductive coupler that is configured to connect with the female inductive coupler of the outer completion string.

First claim

1 . A system deployed in a wellbore extending through a plurality of well zones, the system comprising:
an outer completion string comprising:
at least one isolation packer positioned between well zones of the plurality of well zones, the plurality of well zones comprising: a bottom-most well zone; and a top well zone;
a washdown shoe disposed in the bottom-most well zone;
a first sand control assembly and a first gravel pack extension, each disposed uphole of the washdown shoe in the bottom-most well zone,
wherein the top well zone comprises a latch profile; a female inductive coupler; and a gravel pack packer,
wherein the top well zone further comprises a second sand control assembly; and a second gravel pack extension, each of the second sand control assembly and the second gravel pack extension being disposed downhole of the gravel pack packer;
an inner service string configured to connect within the outer completion string, the inner service string comprising:
a workstring;
a set and release section that connects to the latch profile of the outer completion string;
a power module;
a return valve assembly;
a circulating assembly for each well zone;
an inner concentric string that is concentrically arranged within the workstring creating an inner-annulus between the workstring and the inner concentric string, wherein the inner-annulus is continuous from the circulating assembly for the bottom-most well zone to the return valve assembly; and
a port closure sleeve collet; and
an upper completion comprising a male inductive coupler that is configured to connect with the female inductive coupler of the outer completion string.

2 . The system of claim 1 , wherein the inner service string further comprises a concentric seal unit on each side of each circulating assembly.

3 . The system of claim 1 , wherein the inner service string further comprises a washpipe with a stinger.

4 . The system of claim 1 , wherein the workstring operates via telemetry.

5 . The system of claim 1 , wherein the first and second sand control assemblies each comprises at least one pair of screen joints coupled at a screen joint connection, wherein each screen joint comprises:
a non-perforated base pipe; a screen disposed around the non-perforated base pipe; a micro-annulus between the screen and the non-perforated base pipe, the micro-annulus being continuous through the given sand control assembly of the given well zone, the first and second sand control assemblies each further comprising a downhole flow control valve positioned next to or within one of the screen joints.

6 . The system of claim 1 , wherein the plurality of well zones further comprises at least one intermediate well zone between the bottom-most well zone and the top well zone, the outer completion string further comprising:
a third sand control assembly and a third gravel pack extension disposed in the at least one intermediate well zone.

7 . The system of claim 1 , wherein the return valve assembly of the inner service string is remotely operated.

8 . The system of claim 1 , wherein each circulating assembly of the inner service string comprises a plurality of valves controlled via a hydraulic electric system.

9 . The system of claim 1 , wherein the circulating assembly of the inner service string comprises a reverse valve; a treat valve; and an isolation valve.

10 . The system of claim 1 , wherein the circulating assembly comprises a valve that is configured to assume at least one of a reverse position; a treat position; and an isolation position.

11 . The system of claim 1 , wherein the at least one isolation packer of the outer completion string comprises a melting isolating material.

12 . The system of claim 1 , wherein at least one of an electric line and a fiber optic line runs through a length of the outer completion string.

13 . A method of completing a wellbore comprising:
deploying the inner service string connected within the outer completion string of the system of claim 5 in the wellbore; setting the gravel pack packer; pumping displacement fluid through the system in a tubing-to-annulus direction or in an annulus-to-tubing direction; setting the at least one isolation packer; treating the bottom-most well zone; reversing out the bottom-most well zone; treating the top well zone; reversing out the top well zone; pulling out the inner service string from the wellbore; running the upper completion in the wellbore and connecting the male inductive coupler of the upper completion with the female inductive coupler of the outer completion string; setting a production packer in the top well zone of the outer completion string; and opening the downhole flow control valve of the first and second sand control assemblies to facilitate production through an inner diameter of the system.

14 . A system deployed in a wellbore extending through a plurality of well zones, the system comprising:
an outer completion string comprising:
at least one isolation packer positioned between well zones of the plurality of well zones, the plurality of well zones comprising: a bottom-most well zone; and a top well zone;
a washdown shoe disposed in the bottom-most well zone;
a first sand control assembly and a first treatment extension, each disposed uphole of the washdown shoe in the bottom-most well zone,
wherein the top well zone comprises a latch profile; a female inductive coupler; and a treatment packer,
wherein the top well zone further comprises a second sand control assembly; and a second treatment extension, each of the second sand control assembly and the second treatment extension being disposed downhole of the treatment packer;
an inner service string configured to move within the outer completion string, the inner service string comprising:
a workstring;
a set and release section that connects to the latch profile of the outer completion string;
a power module;
a single circulating assembly;
a port closure sleeve collet; and
a flow deactivated washdown shoe; and
an upper completion comprising a male inductive coupler that is configured to connect with the female inductive coupler of the outer completion string.

15 . The system of claim 14 , wherein the inner service string further comprises at least one of a plurality of cups; and a plurality of seal units next to the single circulating assembly to facilitate isolation.

16 . The system of claim 14 , wherein the workstring operates via telemetry.

17 . The system of claim 14 , wherein the first and second sand control assemblies each comprises at least one pair of screen joints coupled at a screen joint connection, wherein each screen joint comprises:
a non-perforated base pipe; a micro-annulus between the screen and the non-perforated base pipe, the micro-annulus being continuous through the given sand control assembly of the given well zone, the first and second sand control assemblies each further comprising a downhole flow control valve positioned next to or within one of the screen joints.

18 . The system of claim 14 , wherein the plurality of well zones further comprises at least one intermediate well zone between the bottom-most well zone and the top well zone, the outer completion string further comprising:
a third sand control assembly and a third treatment extension disposed in the at least one intermediate well zone.

19 . The system of claim 14 , wherein the single circulating assembly of the inner service string comprises a plurality of

Assignees

• Schlumberger Technology Corp

Inventors

• Poizat Jeremie

Classifications

• E21B43/14 Primary

  Obtaining from a multiple-zone well · CPC title

• E21B34/10 Primary

  operated by control fluid supplied from outside the borehole · CPC title

• E21B43/04

  Gravelling of wells · CPC title

• E21B17/18

  Pipes provided with plural fluid passages {(E21B17/203 takes precedence)} · CPC title

• E21B21/12

  using drilling pipes with plural fluid passages, e.g. closed circulation systems · CPC title