Transportation and delivery of set-delayed cement compositions

Patent metadata

Field	Value
Publication number	US-9850419-B2
Application number	US-201415113156-A
Country	US
Kind code	B2
Filing date	Mar 31, 2014
Priority date	Mar 31, 2014
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

Disclosed herein are methods and systems for the transportation and delivery of set-delayed cement compositions to a well site. A method of cementing may comprise preparing a set-delayed cement composition. The method further may comprise storing the set-delayed cement composition. The method further may comprise transporting the set-delayed cement composition to a well site in a containment vessel. The method further may comprise discharging the set-delayed cement composition from the containment vessel and into a wellbore.

First claim

What is claimed is:

1. A method of cementing in a subterranean formation comprising:
preparing a set-delayed cement composition in a containment vessel, wherein the containment vessel is portable and comprises: a mixing chamber for holding the set-delayed cement composition, the mixing chamber being defined by a shell; and a shaft holding one or more mixing blades in the mixing chamber;
storing the set-delayed cement composition in the containment vessel;
transporting the set-delayed cement composition to a well site in the containment vessel; and
discharging the set-delayed cement composition from the containment vessel and into a wellbore.

2. A method according to claim 1 wherein the step of storing the set-delayed cement comprises storing the set-delayed cement composition for a period of about 1 day or longer prior to the step of transporting the set-delayed cement composition to the well site.

3. A method according to claim 2 further comprising intermittently mixing the set-delayed cement composition while the set-delayed cement composition is being stored.

4. A method according to claim 1 wherein the containment vessel further comprises baffles disposed on an interior surface of the shell, and wherein the mixing blades comprise upward facing mixing blades and downward facing mixing blades arranged vertically on the shaft.

5. A method according to claim 1 further comprising adding a cement set accelerator to the set-delayed cement composition.

6. A method according to claim 5 wherein the cement set accelerator comprises calcium chloride.

7. A method according to claim 1 wherein the set-delayed cement composition comprises pumice, lime, a set retarder, and a dispersant.

8. A method according to claim 1 wherein the well site is offshore.

9. A method according to claim 1 wherein the set-delayed cement composition is used to form a plug in the wellbore in a plug-and-abandon operation.

10. The method of claim 1 , further comprising:
maximizing a velocity uniformity index for the containment vessel, the velocity uniformity index being defined by the following equation:

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Assignees

• Halliburton Energy Services Inc

Inventors

• Ballew Horton Colby
• Morgan Ronnie Glen
• Brown Paul Alan

Classifications

• B01F7/00208

  Operations & Transport · mapped topic

• C04B2103/10

  Accelerators; Activators · CPC title

• B01F7/18

  Operations & Transport · mapped topic

• C04B14/16

  porous, e.g. pumice · CPC title

• C04B22/124

  Chlorides of ammonium or of the alkali or alkaline earth metals, e.g. calcium chloride · CPC title