Completing a multi-stage well

Patent metadata

Field	Value
Publication number	US-10138706-B2
Application number	US-201514711379-A
Country	US
Kind code	B2
Filing date	May 13, 2015
Priority date	Sep 13, 2011
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A technique includes running a seat assembly on a conveyance line into a tubing string, which has previously been installed in a well. The seat assembly includes a seat, which is adapted to receive an untethered object. The technique includes attaching the seat assembly to the string at a location downhole in the well; receiving the object to create a fluid barrier; and diverting fluid using the fluid barrier.

First claim

What is claimed is:

1. A method comprising:
installing a tubing string having an interior wall into a well;
running a seat assembly into the tubing string;
attaching the seat assembly to the interior wall of the tubing string at a location in the well, the seat assembly providing a seat adapted to receive an untethered object,
wherein the seat comprises a surface inclined at an acute angle with respect to a cross-sectional plane that extends through a passageway of a face of the tubing string to produce a radially directed outward force tending to force the seat assembly against the interior wall of the tubing string in response to a pressure being exerted on the object due to fluid pumped in the tubing string;
receiving the object in the seat of the seat assembly to create a fluid barrier;
diverting fluid for stimulation operations using the fluid barrier; and
disintegrating at least part of the fluid barrier.

2. The method of claim 1 , further comprising:
deploying the object though a passageway of the tubing string; and
landing the object in the seat of the seat assembly.

3. The method of claim 1 , further comprising running the object with the seat assembly as a unit into the tubing string.

4. The method of claim 1 , wherein the attaching comprises:
radially expanding the seat assembly from a radially smaller size to a radially larger size to secure the seat assembly to the interior wall of the tubing string.

5. The method of claim 1 , wherein the attaching comprises:
using a pressure exerted on the seat by the object to produce a force to radially expand the seat assembly against the interior wall of the tubing string.

6. The method of claim 1 , wherein the attaching comprises:
teeth of the seat assembly biting into the interior wall of the tubing string.

7. The method of claim 1 , further comprising:
perforating the tubing string.

8. The method of claim 7 , wherein the perforating comprises running a perforating gun into the tubing string with the seat assembly attached to the perforating gun.

9. The method of claim 1 , wherein disintegrating comprises an act selected from a group consisting of:
dissolving the object; and
dissolving the seat assembly.

10. The method of claim 1 , further comprising receiving a stimulus indicating at least part of the fluid barrier has been removed.

11. The method of claim 10 , wherein the receiving of the stimulus indicating that at least part of the fluid barrier has been removed comprises an act selected from a group consisting of:
receiving a chemical tracer initially contained inside a cavity of the object and released due to at least partial disintegration of the object;
receiving a radio frequency identification tag at a radio frequency identification tag reader, the radio frequency identification tag being initially contained inside a cavity of the object and released due to at least partial disintegration of the object; and
receiving an identifying portion of the object released due to at least partial disintegration of the object.

12. An apparatus comprising a seat assembly deployable downhole on a conveyance line inside a passageway of a tubing string previously installed in a well,
the seat assembly adaptably attachable to an interior profile of the tubing string at a location in the well to form a seat adapted to receive an untethered object and thereby form a fluid barrier to divert fluid in the string,
wherein the seat comprises a surface inclined at an acute angle with respect to a cross-sectional plane that extends through a passageway of a face of the tubing string to produce a radially directed outward force tending to force the seat assembly against a wall of the tubing string in response to a pressure being exerted on the object due to fluid pumped into the string, and
wherein at least a portion of the seat assembly is made of a degradable material.

13. The apparatus of claim 12 , wherein the seat assembly comprises radially expanding teeth to secure the seat assembly to the wall of the tubing string.

14. The apparatus of claim 12 , wherein the seat assembly comprises an outer profile adapted to land in an inner surface profile of the tubing string.

15. The apparatus of claim 12 , wherein the object comprises degradable material.

16. The apparatus of claim 12 , wherein the seat assembly comprises a metal alloy.

17. The apparatus of claim 12 , wherein the apparatus is operably coupleable with a tool adapted to secure the assembly to the tubing string, wherein the tool and a perforating gun are attached to the conveyance line.

Assignees

• Schlumberger Technology Corp

Inventors

• Baihly Jason
• Bertoja Michael
• Parrott Robert A
• Lecerf Bruno
• Aldridge Don

Classifications

• E21B34/063 Primary

  Valve or closure with destructible element, e.g. frangible disc (E21B34/103 takes precedence) · 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

• E21B43/14 Primary

  Obtaining from a multiple-zone well · CPC title

• E21B2034/002

  Fixed Constructions · mapped topic

• E21B43/114

  Perforators using direct fluid action {on the wall to be perforated}, e.g. abrasive jets · CPC title