Method to design cement slurry with minimal carbon footprint
AssigneeHalliburton Energy Services, Inc.
InventorsSiva Rama Krishna Jandhyala, John Paul Bir Singh
Life of this patent
Estimating the term…
Abstract
A method of producing a cement composition with reduced carbon emissions may include: defining cement constraints comprising at least one cement property; calculating a set of cement compositions which satisfy the cement constraints, using cement property models corresponding to the cement constraints; calculating a carbon emission associated with each of the cement compositions in the set of cement compositions using a carbon footprint model; selecting a cement composition from the set of cement compositions; and preparing the cement composition.
Claims21
A method of producing a cement composition with reduced carbon emissions comprising:
- (a) defining cement constraints comprising at least one cement property;
- (b) calculating a set of cement compositions which satisfy the cement constraints, using cement property models corresponding to the cement constraints;
- (c) calculating a carbon emission associated with each of the cement compositions in the set of cement compositions using a carbon footprint model;
- (d) selecting a cement composition from the set of cement compositions;
- and
- (e) preparing the cement composition selected in step (d).
A method of producing a cement composition with reduced carbon emissions comprising:
- (a) defining cement constraints comprising at least one cement property;
- (b) calculating a set of cement compositions which satisfy the cement constraints, using cement property models corresponding to the cement constraints;
- (c) calculating a carbon emission associated with each of the cement compositions in the set of cement compositions using a carbon footprint model, wherein the step of calculating a carbon emission comprises:
- (d) selecting a cement composition from the set of cement compositions;
- (e) calculating a volume of slurry for a mass of powder of the cement composition selected in step (d) using the following equation:
- V
- slurry
- =
- m
- powder
- ρ
- powder
- +
- ρ
- slurry
- ρ
- powder
- -
- 1
- 1
- -
- ρ
- slurry
- ρ
- wa
-
- ter
- ρ
- water
- where Vslurry is volume of slurry, mpowder is a mass of powder of the cement composition selected in step (d), ρpowder is density of the cement composition selected in step (d), ρslurry is density of a slurry, and ρwater is density of water;
- (f) calculating a carbon footprint of the cement composition selected in step (d) using the following equation:
- carbon
-
- footprint
- =
- ∑
- i
-
- x
- i
- ×
- CO
-
- 2
- i
- V
- slurry
- where, xi is mass fraction of material i in the cement composition selected in step (d), and CO2i is the emission due to material i;
- and
- (g) repeating steps (d)-(f) for each cement composition in the set of cement compositions;
- (h) selecting a cement composition from the set of cement compositions;
- and
- (i) preparing the cement composition selected in step (h).
Dependencies are inferred from the claim text.