Abstract: Aspects of the subject technology relate to systems and methods for determining cement barrier quality of a cementing process. Systems and methods are provided for receiving data from a distributed acoustic sensing fiber optic line positioned proximate to cement barrier of a wellbore, determining at least one zonal isolation in the cement barrier based on the data received from the distributed acoustic sensing fiber optic line, and compiling a cement bond log based on the determining of the at least one zonal isolation in the cement barrier.

Abstract: Disclosed herein is a method of servicing a wellbore penetrating a subterranean formation, comprising: placing a cementitious composition of the type disclosed herein into the wellbore. The cementitious composition comprises a cement blend and water, wherein the cement blend comprises Portland cement and pozzolan, wherein the Portland cement is present in an amount of from equal to or greater than about 0.01 wt. % to equal to or less than about 25.0 wt. % based on the total weight of the cement blend.

Abstract: A system and method including modeling wellbore conditions and plug properties to predetermine the dissolution time of a plug under wellbore conditions for use in a well operation. The system and method provide an estimate of how long a dissolvable plug will remain viable based on its composition and the conditions in the wellbore. Once a suitable plug has been selected or once suitable wellbore conditions have been determined, the plug and/or conditions can be tested in the lab to confirm suitability prior to use downhole.

Abstract: A method of designing a cement slurry may include: (a) selecting at least a cement and concentration thereof, water and concentration thereof, and, optionally, at least one supplementary cementitious material and a concentration thereof, such that a cement slurry comprising the cement, the water, and, if present, the at least one supplementary cementitious material, meet a density requirement; (b) calculating a thickening time of the cement slurry using a thickening time model; (c) comparing the thickening time of the cement slurry to a thickening time requirement, wherein steps (a)-(c) are repeated if the thickening time of the cement slurry does not meet or exceed the thickening time requirement, wherein the selecting comprises selecting different concentrations and/or different chemical identities for the cement and/or the supplementary cementitious material than previously selected, or step (d) is performed if the thickening time of the cement slurry meets or exceeds the thickening time requirement; and p

Abstract: A method may include providing a fluid loss model, providing a fluid loss requirement, generating a cement slurry recipe using the fluid loss model and the fluid loss requirement such that a calculated fluid loss of the cement slurry recipe using the fluid loss model meets or exceeds the fluid loss requirement; and preparing a cement slurry based on the cement slurry recipe.

Abstract: A method of designing a cement pumping procedure of a wellbore isolation barrier with a design application receiving customer inputs comprising a plurality of wellbore data and a job objective. The design application can retrieve a cement pumping procedure from a data source comprising a series of sequential steps to achieve the job objective. The design application can load the customer inputs into the cement pumping procedure, access a database of best practices, calculate a probability score for achieving the job objective based on a model, and recommend modifying one or more steps of the cement pumping procedure with one or more best practices in response to the probability score being below a threshold.

Abstract: A method of designing a cement slurry may include: (a) selecting at least a cement and concentration thereof, a water and concentration thereof, and one or more chemical additives and a concentration thereof such that a cement slurry formed from the cement, water, and the one or more chemical additives meet a density requirement; (b) calculating a thickening time of the cement slurry using a thickening time model; (c) comparing the thickening time of the cement slurry to a thickening time requirement, wherein steps (a)-(c) are repeated if the thickening time of the cement slurry does not meet or exceed the thickening time requirement, wherein the step of selecting comprises selecting concentrations and/or different chemical identities for the one or more chemical additives, cement, or water, or step (d) is performed if the thickening time of the cement slurry meets or exceeds the thickening time requirement; and (d) preparing the cement slurry.

Abstract: A method may include comprising: defining engineering parameters of a proposed cement slurry, the engineering parameters comprising at least a compressive strength requirement, a density requirement, a storage time requirement, and a thickening time requirement; selecting, based at least in part on a model of compressive strength, a model of storage time, and the density requirement, at least a cement and mass fraction thereof, at least one supplementary cementitious material and mass fraction thereof, and a water and mass fraction thereof, such that a set cement formed from the cement, the at least one supplementary cementitious material, and the water meets or exceeds the compressive strength requirement and the density requirement; selecting, based at least in part on a model of thickening time, an accelerator and mass fraction thereof; and preparing a cement slurry comprising the cement and mass fraction thereof, the at least one supplementary cementitious material and mass fraction thereof, the water and

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.

Abstract: A method of cementing may include: measuring a feeding rate of water and a feeding rate of cement blend into a cement blender; calculating a cement retarder feeding rate and/or an accelerator feeding rate using a thickening time model, wherein the thickening time model uses at least a thickening time requirement, the feeding rate of water, and the feeding rate of cement blend, to calculate the cement retarder feeding rate and/or the accelerator feeding rate; introducing a cement retarder at the cement retarder feeding rate and/or an accelerator at the accelerator feeding rate into the cement blender; mixing at least the water, cement blend, and at least one of the cement retarder and/or the accelerator in the cement blender to provide a cement slurry; and placing the cement slurry in a wellbore.

Abstract: A method of designing a cement composition may include: minimizing an objective function subject to a plurality of constraints to produce a cement composition including at least one cement component and water; and preparing the cement composition.

Abstract: A method may include: analyzing each of a group of inorganic particles to generate data about physicochemical properties of each of the inorganic particles; and generating a correlation between a reactivity index of each of the inorganic particles and the data.

Abstract: The equivalent circulating density (“ECD”) in a wellbore may be managed during a wellbore operation using ECD models that take into account the rheology of the wellbore fluid and the rotational speed of tubulars in the wellbore. For example, a method may include rotating a rotating tubular in a stationary conduit while flowing a fluid through an annulus between the rotating tubular and the stationary conduit; calculating an equivalent circulating density (“ECD”) of the fluid where a calculated viscosity of the fluid is based on an ECD model ?_eff=f(? ?_eff)*h(Re), wherein ?_eff is the viscosity of the fluid, ? ?_eff is an effective shear rate of the fluid, and Re is a Reynold's number for the fluid for the rotational speed of the rotating tubular; and changing an operational parameter of the wellbore operation to maintain or change the ECD of the fluid.

Abstract: A method may include: defining engineering parameter of a proposed cement slurry, the engineering parameters comprising at least a compressive strength requirement, a density requirement, a storage time requirement, and a thickening time requirement; selecting, based at least in part on a model of compressive strength, a model of storage time, and the density requirement, at least a cement and mass fraction thereof, at least one supplementary cementitious material and mass fraction thereof, and a water and mass fraction thereof, such that a cement slurry formed from the cement, the at least one supplementary cementitious material, and the water meets the compressive strength requirement and the density requirement; selecting, based at least in part on a model of thickening time, an accelerator and mass fraction thereof; selecting, based at least in part on a model of activator thickening time, an activator and mass fraction thereof; and preparing a cement slurry comprising the cement and mass fraction thereof

Abstract: A method of cementing may include preparing a cement composition comprising water, a hydraulic cement, and an agglomerated zeolite catalyst; placing the cement composition in a wellbore.

Abstract: A method of designing a cement slurry comprising: (a) selecting at least a cement and concentration thereof, a water and concentration thereof, and one or more chemical additives concentration thereof such that a cement slurry formed from the cement, one or more chemical additives, and the water meet a density requirement; (b) calculating a thickening time of the cement slurry at the wellbore temperature using a thickening time model; (c) comparing the thickening time of the cement slurry to a thickening time requirement and performing steps (a)-(c) if the thickening time of the cement slurry does not meet or exceed the thickening time requirement, wherein the step of selecting comprises selecting different concentrations and/or different chemical identities for the cement and/or one or the more chemical additives than previously selected, or performing step (d) if the thickening time of the cement slurry meets or exceeds the thickening time requirement; and (d) preparing the cement slurry.

Abstract: A method may include: providing a model of cement induction time; designing a cement composition, based at least partially, on the model of cement induction time; and preparing the cement composition.

Abstract: System and methods for detecting a composition in a wellbore during a cementing operation. An electrochemical cell can be disposed towards an end of a wellbore. The electrochemical cell can generate electrical energy in response to a physical presence of a composition at the electrochemical cell. The composition can be pumped from a surface of the wellbore during a cementing operation of the wellbore. Further, a telemetry signal indicating the physical presence of the composition at the electrochemical cell can be generated based on the electrical energy generated by the electrochemical cell. As follows, the telemetry signal can be transmitted to the surface of the wellbore.

Abstract: A method of determining slurry mixability may include: providing a dry blend comprising one or more particulate materials; calculating a minimum water requirement of the dry blend; calculating a water requirement of a slurry having a target slurry density and comprising the dry blend; determining if the slurry is mixable based on the water requirement of the slurry and the minimum water requirement; and preparing the slurry if the slurry is mixable.

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.