Abstract: A method of designing a cement slurry may include: (a) selecting a target permeability and a density requirement; (b) inputting the target permeability into a permeability model and generating a proposed cement composition using the permeability model, wherein the proposed cement composition comprises at least a cement and concentration thereof, and a water and concentration thereof such that a cement slurry formed from the proposed cement composition water meet the density requirement; (c) preparing the cement slurry based on the proposed cement composition; and (d) introducing the cement slurry into a wellbore and allowing the cement slurry to set to form a hardened cement.

Abstract: A method of designing a grout material for an anchoring pile system based on the analysis of a stress state of the anchoring pile constructed into a subterranean formation. An advisory process can utilize a model to produce a numerical model of the anchoring pile, a model to determine the operational loads, a model to determine the grout material, and a model to determine the stress state of the grout interfaces. The group of models can determine a probability of failure of the grout material, a probability of failure of a grout interface, and a predicted lifespan of the grout materials.

Abstract: Methods of the present disclosure relate to tailoring cement compositions to withstand carbon dioxide injection. A method comprises predicting a depth of carbonation in a cement sheath; predicting spatially varying mechanical properties of the cement composition due to the carbonation; and determining a mechanical response of the cement sheath based on the spatially varying mechanical properties of the cement composition.

Abstract: A method for identifying zones in an annulus with poor cementing that may include deploying a fiber optic cable within the wellbore, creating a temperature gradient in the wellbore, and collecting temperature data over a period of time as the wellbore returns to a thermal equilibrium. The method may also include comparing the temperature data collected by the fiber optic cable at one or more locations to predicted temperature data over the period of time at the one or more locations to identify locations where the measured temperature data deviates from the predicted temperature data for identifying locations or zones of the annulus that have poor cementing.

Abstract: Methods of the present disclosure relate to designing lost circulation material (LCM) based on permeability of filter cake. A method comprises determining if a lost circulation material (LCM) has the potential to bridge a fracture, the fracture extending from a wellbore; determining a permeability of filter cake formed due to the LCM, wherein the permeability is determined if the LCM has the potential to bridge the fracture; and formulating a composition that includes the LCM, to control losses from the wellbore.

Abstract: Methods of the present disclosure relate to quantitative assessments of the risk of damage to cement sheaths due to cyclic loads. A method comprises selecting cement compositions; performing wellbore integrity analyses using models for cement sheaths, each cement sheath comprising a selected cement composition; and determining a number of cycles to failure for each cement sheath.

Abstract: A method of designing a fluid loss control treatment for a low pressure zone within a wellbore from drilling datasets indicative of drilling the wellbore. The design process can determine a fluid loss rate and a fracture location from the drilling dataset. The design process may determine a particle type to form an interface with a filter property at the fracture location by inputting a fracture geometry into a particle model. The filter property of the interface includes a porosity value, a permeability value, or combinations thereof that exceeds a threshold value. The design process may generate a fluid loss control treatment comprising a quantity of particles and a volume of carrier fluid for the fracture geometry within the wellbore.

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 plug has been selected or once 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 blend for a wellbore isolation barrier based on the analysis of a stress state of the wellbore isolation barrier from the injection of CO2 into a porous formation. The analysis software may determine an optimized cement blend for a future CO2 injection schedule. The analysis software may determine a current near wellbore stress state for a current CO2 injection schedule. The analysis software may optimize a CO2 injection schedule based on the analysis of a future near wellbore stress state of the wellbore isolation barrier. The near wellbore stress state of the isolation barrier may be determined by at least one model accessed by the analysis software. The inputs into the model comprise periodic CO2 injection pressure and flowrate datasets, cement properties, and formation properties.

Abstract: Methods of the present disclosure relate to assessing and mitigating the risk of pore pressure buildup as part of designing a cement formulation. A method comprises: performing wellbore integrity analysis to provide a stress state of a cement sheath, wherein the cement sheath is a model; modifying the stress state of the cement sheath due to fluid influx through the cement sheath; comparing the modified stress state to failure properties for the cement sheath; and formulating a cement composition based on at least the modified stress state.

Abstract: A method for identifying zones in an annulus with poor cementing that may include deploying a fiber optic cable within the wellbore, creating a temperature gradient in the wellbore, and collecting temperature data over a period of time as the wellbore returns to a thermal equilibrium. The method may also include comparing the temperature data collected by the fiber optic cable at one or more locations to predicted temperature data over the period of time at the one or more locations to identify locations where the measured temperature data deviates from the predicted temperature data for identifying locations or zones of the annulus that have poor cementing.

Abstract: Techniques of the present disclosure relate to validating data for a composition design. A method comprises applying a machine learning model to at least two inputs comprising parameters of a cement composition and experimental conditions such that the machine learning model outputs at least one predicted property of the cement composition; performing a laboratory experiment to determine at least one experimental property of the cement composition; calculating an error between the at least one predicted property and the at least one experimental property; and recording the experimental data in a cement property database if the error is within an error range or repeating the performing the laboratory experiment if the error is outside the error range.

Abstract: Methods and systems are provided for designing and determining a well service in the presence of loss, including the volume, rates, and duration of pumping of fluids in the presence of losses. A method of designing services for wellbores includes calibrating a loss circulation model with input comprising wellbore state to update the loss circulation model with formation loss zone characteristics; applying the loss circulation model to output at least a prediction of loss rate; and designing a wellbore service at least partially based on the prediction of the loss rate.

Abstract: The present disclosure relates to designing compositions based on toughness. A method comprises (a) selecting at least a cementitious material and concentration thereof and a water and concentration thereof to form a cement slurry recipe; (b) calculating a toughness for the cement slurry recipe using a toughness model wherein the toughness model comprises an input of physicochemical properties of components of the cement slurry recipe; (c) comparing the toughness of the cement slurry recipe to a toughness requirement; (d) repeating steps (a)-(c) if the calculated toughness of the cement slurry recipe does not meet or exceed the toughness requirement, wherein each repeated step of selecting comprises selecting different concentrations and/or different chemical identities for at least the cementitious material and/or water than previously selected; and (e) preparing a cement slurry based on the cement slurry recipe, the cement slurry including a toughness that meets or exceeds the toughness requirement.

Abstract: Techniques of the present disclosure relate to designing a fluid. A method comprises receiving at least one known parameter for a fluid design; receiving at least one constraint for the fluid design; estimating at least one unknown parameter for the fluid design; calculating displacement efficiency of the fluid design based on the at least one known parameter and at least one estimated parameter; and producing a designed fluid based on the displacement efficiency.

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 blend for a wellbore isolation barrier based on the analysis of a stress state of the wellbore isolation barrier from the injection of CO2 into a porous formation. The analysis software may determine an optimized cement blend for a future CO2 injection schedule. The analysis software may determine a current near wellbore stress state for a current CO2 injection schedule. The analysis software may optimize a CO2 injection schedule based on the analysis of a future near wellbore stress state of the wellbore isolation barrier. The near wellbore stress state of the isolation barrier may be determined by at least one model accessed by the analysis software. The inputs into the model comprise periodic CO2 injection pressure and flowrate datasets, cement properties, and formation properties.

Abstract: A process is directed at plugging a wellbore, wherein the wellbore has a portion extending at least partially through a caprock composed of salt rock. The process includes applying a barrier in the wellbore at or above the caprock. Thereafter, the process includes a step of promoting creep such that the salt rock in the caprock creeps into the wellbore to create a salt-rock plug in the wellbore, and hence, closes off the portion of the wellbore above the salt-rock plug from fluid flow communication with the portion of the wellbore below the salt-rock plug.