Reservoir Engineering

Martin, F.D.; Colpitts, Robert M.

doi:10.1016/b978-088415643-7/50009-1

Cited by 8 publications

(3 citation statements)

References 156 publications

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“…The formation injectivity history describes the formation behavior with respect to each injection batch, higher injectivity indicates lesser formation damage associated with formation of filter cake. The injectivity is calculated using equation 3 assuming that the fluid flow occurs in a steady-state, single phase and under radial flow regime [19].…”

Section: Methods To Predict and Avoid Formation Damagementioning

confidence: 99%

Untitled

2022

JOGRR

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Section: Methods To Predict and Avoid Formation Damagementioning

confidence: 99%

Untitled

2022

JOGRR

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Section: Methods To Predict and Avoid Formation Damagementioning

confidence: 99%

Lessons Learned to Avoid Formation Damage Development During Waste Slurry Injection Operations

2022

JOGRR

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The injection of oil and gas wastes produced during the exploration and production phases have been proven to be an effective technique towards achieving zero discharge. However, several challenges are associated with the injection of slurry into an underground formation. The most common challenge during waste slurry injection (WSI) is the loss of well injectivity and pre mature formation damage due to a poor engineering and operational design. For the WSI operation, near wellbore formation damage is one of the major risk and is created by the injected solids. The real time injection monitoring of the ongoing operations is important to make amends to the injection procedure in order to avoid the formation damage and ensure the well longevity. Three different case studies are presented to highlight the operational mistakes that caused a significant formation damage in injectors in Eagle Ford, Haynesville, and Permian Basin shale plays of Texas, United States. Certain guidelines depending on the monitoring results are provided like modifying the slurry rheology, injection pressure, injection strategy etc. that are helpful in maintaining the injectivity. The presented case studies show that the wells with good monitoring program maintained its injectivity during its operation compared to the other wells that lost its injectivity sooner. The paper discusses the importance of injection monitoring and steps necessary to maintain the injectivity and perform a healthy WSI operation.

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“…Porosity is a value between 0 and 1 that represents a fraction of the volume of pores in a material compared to total mass volume, usually ranging up to a maximum value of over 0.5 for peat or clay 40 . For this reasoning, the porosity values were ranged from 0.1 to 0.6 to verify the relationship between porosity and reflection coefficient.…”

Section: Modelingmentioning

confidence: 99%

Testing the viability of measuring intraocular pressure using soundwaves from a smartphone

Soanes

Essa

Butt

2021

Engineering Reports

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Early detection of increasing values of intraocular pressure (IOP) due to glaucoma can prevent severe ocular diseases and ultimately, prevent loss of vision. Currently, the need for an accurate, mobile measurement of IOP that shows no correlation to central corneal thickness is unmet within the modern healthcare practices. There is a potential to utilize soundwaves as a mobile measurement method and therefore, the relationship between IOP and the reflection coefficient of sound waves is investigated. Simulations are conducted using COMSOL Multiphysics to provide theoretical confirmation of the worthiness of the experiment. An experiment is conducted to further investigate the relationship between the internal pressure of an object and its acoustic reflection coefficient. The experiment exploits the use of hydrostatic pressure to determine internal pressure, and the reflection coefficient is measured and analyzed. An initial experiment is conducted to identify the resonant frequency of the object and the optimal frequency for maximizing reflection. The experiment shows comprehensively that there is a relationship between the internal pressure of an object and its acoustic reflection coefficient, providing a confirmation of the theory that would allow mobile measurements of IOP to be conducted with the use of a smart phone.

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Reservoir Engineering

Cited by 8 publications

References 156 publications

Untitled

Untitled

Lessons Learned to Avoid Formation Damage Development During Waste Slurry Injection Operations

Testing the viability of measuring intraocular pressure using soundwaves from a smartphone

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