Control heat of hydration by characterizing cementitious components

Patent metadata

Field	Value
Publication number	US-11760914-B2
Application number	US-202117543466-A
Country	US
Kind code	B2
Filing date	Dec 6, 2021
Priority date	Feb 22, 2017
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

Methods of wellbore cementing are provided. A method of designing a cement composition may include: selecting a target heat of hydration for a target time and temperature; selecting one or more cementitious components and a weight percent for each of the one or more cementitious components such that a sum of a heat of hydration of the one or more cementitious components is less than or equal to the target heat of hydration; preparing the cement composition; and allowing the cement composition to set.

First claim

What is claimed is:

1. A method of designing a cement composition for use in a wellbore, the method comprising:
selecting a target heat of hydration for setting of the cement composition in the wellbore;
selecting a target time wherein the target time is a setting time to reach for the cement composition to set in the wellbore, and a target temperature for the cement composition to set in the wellbore;
selecting one or more cementitious components and a weight percent of each of the one or more cementitious components for the cement composition;
calculating a time dependent concentration of each of the one or more cementitious components in the cement composition at the selected temperature using a dissolution model; and
calculating heat of hydration at the target time and the target temperature using the time dependent concentration of each of the one or more cementitious components, wherein the heat of hydration is a sum of a component heat of hydration for each of the one or more cementitious components, wherein the component heat of hydration is obtained from a database comprising calorimetric data for each of the one or more cementitious components, and wherein the one or more cementitious components and weight percent is selected such that the heat of hydration is less than or equal to the target heat of hydration.

2. The method of claim 1 further comprising:
adjusting the weight percent of at least one of the one of more cementitious components such that the heat of hydration is less than or equal to a target heat of hydration at the target time.

3. The method of claim 1 wherein the one or more cementitious components comprise at least one cementitious component selected from the group consisting of Portland cement, lime, fly ash, slag, silica fume, crystalline silica, silica flour, cement kiln dust, zeolite, agricultural waste ash, pozzolans, and combinations thereof.

4. The method of claim 1 wherein the cement composition further comprises one or more additives selected from the group consisting of weighting agents, retarders, accelerators, activators, gas control additives, lightweight additives, gas-generating additives, mechanical-property-enhancing additives, suspending agents, lost-circulation materials, filtration-control additives, fluid-loss-control additives, defoaming agents, foaming agents, transition time modifiers, dispersants, thixotropic additives, and combinations thereof.

5. The method of claim 1 wherein the one or more cementitious components comprise Portland cement, and wherein the Portland cement is present in an amount of about 10% to about 50% by weight.

6. The method of claim 1 further comprising the step of calculating a peak temperature that will be reached in the cement composition during setting for the target time at the target temperature.

7. The method of claim 1 wherein the calculated peak temperature is compared to a maximum allowed temperature for the cement composition during setting, and wherein the weight percent of the one or more cementitious components is adjusted until the calculated peak temperature is less than or equal to a maximum allowed temperature.

Assignees

• Halliburton Energy Services Inc

Inventors

• Jimenez Walmy Cuello
• Pang Xueyu
• Singh John Paul Bir

Classifications

• C09K8/42 Primary

  Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells (compositions for plastering C09K8/50) · CPC title

• B28C7/02 Primary

  Controlling the operation of the mixing · CPC title

• C04B28/00 Primary

  Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements · CPC title

• C09K8/467 Primary

  containing additives for specific purposes · CPC title

• C04B28/04

  Portland cements · CPC title