Nonlinear viscoelastic rheological behavior of bentonite and sepiolite drilling fluids under large amplitude oscillatory shear

Ettehadi, Ali; Ülker, Ceylan; Altun, Gürşat

doi:10.1016/j.petrol.2021.109210

Cited by 11 publications

(6 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, Claytone-IMG 400 improves suspension properties within drilling fluids by preventing solids from settling out and causing issues such as blockages or pump wear. Also, Claytone-IMG 400 increases the material's storage modulus and improves its mechanical strength, which could be beneficial for applications that require high stiffness or resistance to deformation 58 . Moreover, Claytone-IMG 400 also increases the material's viscosity and reduces its flowability, which could be beneficial for applications that require high thixotropy or sag resistance 56 .…”

Section: Resultsmentioning

confidence: 99%

Investigating the efficacy of novel organoclay as a rheological additive for enhancing the performance of oil-based drilling fluids

Mahmoud,

Gajbhiye,

Elkatatny

2024

Sci Rep

View full text Add to dashboard Cite

Oil-based drilling fluids (OBDFs) are extensively used in the drilling industry due to their superior performance in challenging drilling conditions. These fluids control wellbore stability, lubricate the drill bit, and transport drill cuttings to the surface. One important component of oil-based drilling fluids is the viscosifier, which provides rheological properties to enhance drilling operations. This study evaluates the effectiveness of Claytone-IMG 400, a novel rheological agent, in enhancing the performance of OBDFs under high-pressure and high-temperature (HPHT) conditions. A comparative analysis was conducted with a pre-existing organoclay (OC) to assess the improvements achieved by Claytone-IMG 400. The OCs were analyzed using X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), and particle size distribution (PSD) to identify their mineral and chemical compositions, morphologies, and particle sizes. The drilling fluid density, electrical stability, sagging tendency, rheological properties, viscoelastic properties, and filtration properties were studied to formulate a stable and high-performance drilling fluid. The results confirmed that the novel OC does not affect the drilling fluid density but enhances the emulsion stability with a 9% increment compared with the drilling fluid formulated with MC-TONE. The sagging experiments showed that Claytone-IMG 400 prevented the sagging issues in both static and dynamic conditions. Also, Claytone-IMG 400 improved the plastic viscosity (PV), yield point (YP), and apparent viscosity (AV). The PV, YP, and AV were improved by 30%, 38%, and 33% increments respectively compared with the drilling fluid formulated with MC-TONE. The YP/PV ratio increased with a 6% increment from 1.12 to 1.19. Moreover, the gel strength (GS) was significantly increased, and the filtration properties were enhanced. The filtration volume was reduced by 10% from 5.0 to 4.5 cm3, and the filter cake thickness had a 37.5% reduction from 2.60 to 1.89 mm. The novelty of this study is highlighted by the introduction and evaluation of Claytone-IMG 400 as a new rheological additive for safe, efficient, and cost-effective drilling operations. The results indicate that Claytone-IMG 400 significantly improves the stability and performance of OBDFs, thereby reducing wellbore instability and drilling-related problems.

show abstract

Section: Resultsmentioning

confidence: 99%

Investigating the efficacy of novel organoclay as a rheological additive for enhancing the performance of oil-based drilling fluids

Mahmoud,

Gajbhiye,

Elkatatny

2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…us, when considering solving oil and gas well drilling technical challenges, smart VES fluids offer a wide range of possibilities in improving the drill bit rate of penetration, cutting suspension and carrying, and overall hole-cleaning performance. Ettehadi et al [59], in their study on the nonlinear viscoelastic behavior of bentonite/sepiolite drilling fluid, highlighted that, due to the incorporation of long chain polymers in the bentonite/sepiolite formulated drilling fluid, an increase in structural stability and thermal degradation prevention is observed making smart viscoelastic drilling fluids great candidates when considering high-temperature conditions. Besides, studies show that incorporation of long chain polymers such as HEC, PAC, and CMC can induce drilling fluid thermal stability up to 260 °C [8]; therefore development of smart VES fluids provides huge potentials when considering HTHP wellbore conditions.…”

Section: Smart Viscoelastic Surfactant (Ves) Fluidsmentioning

confidence: 99%

Smart Fluids and Their Applications in Drilling Fluids to Meet Drilling Technical Challenges

Deng

Egwu

Zhao

2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

This article presents extensive analysis and review on recent developments in smart fluids as well as future opportunities of smart drilling fluids utilization in oil and gas well drilling while focusing on the following smart fluids: smart nanoparticles, electrorheological, magnetorheological, and viscoelastic surfactant (VES) fluids. The distinctive properties of nanoparticles such as tiny particle sizes, high specific surface area, mechanical strength, and thermal stability make them suitable for utilization in drilling fluids. In bentonite water-based drilling fluid systems, this review suggests that charged nanoparticles are capable of displacing exchangeable ions in between bentonite clay platelets, thereby forming intercalates which can interact with clay surfaces through electrostatic attraction or repulsion. In improving wellbore stability, it is presented in this review that nanoparticles are able to invade and plug ultratiny pore spaces in shale formations, thereby further enhancing shale formations’ mechanical strength and wellbore stability. According to this review, the magnitude of changes in properties of smart electrorheological and magnetorheological fluids largely depends on the intensity of applied electric and magnetic fields. The intensity of smart fluids properties alteration due to applied field would equally depend on wt.% concentration and chemical compositions of particles susceptible to electric and magnetic fields. Based on review carried out on VES smart fluids, attractive and repulsive forces in the smart VES fluids solution result in the formation of micelles which can cause changes in viscoelastic property of the formulated smart viscoelastic fluids. The more the concentration of charged ions in the base fluid which VES fluids come in contact with, the higher the viscoelasticity of the smart VES fluids. According to this review, utilization of smart materials in drilling fluids can result in meeting oil and gas well drilling technical challenges including enhancing wellbore stability, improving hole cleaning performance, lost circulation control, fluid loss control, enhancing rate of penetration, pressure drop control, and easing cutting carrying efficiency of drilling fluids. This review equally suggests that the utilization of smart fluids such as smart magnetorheological and electrorheological fluids would facilitate drilling automation and real-time data acquisition processes, which is the future technology in oil and gas drilling.

show abstract

“…The elastic constants of springs are related to the material’s mechanical properties. Such spring has the ability to add viscoelastic structural damping coefficient and the geometrical parameters such as cross-section area and rotary inertia of the flexible cylinder (Abdollahi et al, 2022; Ettehadi et al, 2022; Liu et al, 2022a; Nasrabadi et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Under constant normal load and constant normal stiffness boundary conditions, Liu et al (2022b) investigated the linear and nonlinear flow responses of fractured joints subject to shearing. According to Ettehadi et al (2022), under large amplitude oscillatory shear, nonlinear viscoelastic behavior is observed in drilling fluids containing bentonite and sepiolite. A study by Abdollahi et al (2022) investigates the stability and nonlinear vibrations of rotating cylindrical structures conveying thin-walled annular fluids.…”

Section: Introductionmentioning

confidence: 99%

Active sloshing control of a circular cylindrical container with FG GPL-RC

Jamalabadi

2022

Journal of Vibration and Control

View full text Add to dashboard Cite

The main purpose of the current study is to design a control system for a sloshing system to suppress the vibration of functionally graded graphene platelet-reinforced composite (FG GPL-RC) on the top surface. A set of piezoelectric sensors and actuators are used for active control of fluid-structure coupling in transient seismic analysis of an inviscid liquid sloshing in a cylindrical tank. First, the top surface FG GPL-RC is optimized to satisfy maximum deformation, face failure, mid shear, and face wrinkling by changing the geometrical parameters and weight fraction distribution through the thickness. The nonlinear governing equations of nanocomposite panels with mechanical properties derived from the Halpin–Tsai model are solved by smoothed particle hydrodynamics (SPH) method. A parameter study counting the boundary condition effects, thickness-to-radius ratio, material distribution of the laminates, and dimensions of the sloshing tank on the FG GPL-RC natural frequencies are surveyed and explained in detail. Then, the frequency analysis of the plate with and without sloshing is performed while the inviscid fluid motion is modeled by SPH. The proposed method is validated with available data in the literature. Finally, the active control of the coupled system in response to the external disturbances is completed by a tuned proportional–integral–derivative (PID) controller which used the piezoelectric sheets on the top surface plate. The performance of the proposed control system is illustrated by a comparison of the controlled and uncontrolled transient responses of the coupled hydro-elastic system to the El-Centro seismic load.

show abstract

Nonlinear viscoelastic rheological behavior of bentonite and sepiolite drilling fluids under large amplitude oscillatory shear

Cited by 11 publications

References 53 publications

Investigating the efficacy of novel organoclay as a rheological additive for enhancing the performance of oil-based drilling fluids

Investigating the efficacy of novel organoclay as a rheological additive for enhancing the performance of oil-based drilling fluids

Smart Fluids and Their Applications in Drilling Fluids to Meet Drilling Technical Challenges

Active sloshing control of a circular cylindrical container with FG GPL-RC

Contact Info

Product

Resources

About