Control heat of hydration by characterizing cementitious components
AssigneeHalliburton Energy Services, Inc.
InventorsWalmy Cuello Jimenez, Xueyu Pang, John Paul Bir Singh
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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.
Claims7
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.
Dependencies are inferred from the claim text.