Effect of Formation Cutting’s Mechanical Properties on Drilling Fluid Properties During Drilling Operations

Bageri, Badr; Benaafi, Mohammed; Mahmoud, Mohamed; Mohamed, Abdelmjeed; Patil, Shirish; Elkatatny, Salaheldin

doi:10.1007/s13369-020-04424-7

Cited by 11 publications

(10 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gel strength dial reading was estimated directly at the lowest shear rate (3 rpm). 3 was selected and prepared using a fixed concentration of the red mud at 80 lb./ Using an equal dosage of 80 Ib/bbl., the red mud and calciteweighted drilling fluid exhibit similar densities, 16,17 which was expected due to the similarity in the densities of the materials. Moreover, the pH of the red mud samples is around 11.…”

Section: Drilling Fluid Preparationmentioning

confidence: 55%

Innovative Applications of Red Mud: Converting an Environmental Challenge to a Drilling Asset

2022

Self Cite

View full text Add to dashboard Cite

Red mud is generated from alumina production through bauxite digestion with caustic soda. Ma'aden aluminum production estimated the abundance in a million tons as 2.65:1:2 for bauxite, alumina, and red mud, respectively. The real challenge when it comes to red mud pertains to storage capacity; many solutions have been put forward in different industries, and in this study, the utilization of the red mud waste material is presented as a potential weighting material that could be incorporated into the design of drilling fluid systems. This study provides an assessment of the utilization of red mud as a drilling fluid, and it provides directions for the use of red mud in drilling mud systems as a filtration agent and as a finely divided solid used as a weighting material to increase the density of a given drilling fluid system. This study investigates the viability of red mud as an effective additive to drilling fluid and its effect on rheology and filtration. Different techniques are employed in red mud characterization and performance evaluation. The study assesses red mud as an inert solid in a drilling fluid system by investigating the drilling fluid rheology, apparent viscosity (AV), plastic viscosity (PV), and yield point (YP) before and after hot rolling at 150 °F, in addition to filtration properties under low-pressure, lowtemperature and higher-pressure, higher-temperature conditions (at 150 °F and a differential pressure of 250 psi). Also, the study highlights the red mud solid characterization, material preparation, and acid dissolution at 150 °F. This study attempts to view the red mud situation from a practical application angle (primarily in the oil and gas industry). Test results show stable drilling mud fluid properties when utilizing red mud solid additives as weighting agents. The drilling mud exhibits relatively low plastic viscosity, gel strength, excellent sag behavior, and reasonable filtration control, even under HPHT conditions in aqueous-based fluids. The material dissolves in acid. Accordingly, red mud provides a viable option for weighting agents and filtration control.

show abstract

Section: Drilling Fluid Preparationmentioning

confidence: 55%

Innovative Applications of Red Mud: Converting an Environmental Challenge to a Drilling Asset

2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…The YP of the base mud increased from 33 lb/100 ft 2 to 43 lb/100 ft 2 and 48 lb/100 ft 2 when the laponite concentration was increased to 0.5 and 0.75 lb/bbl, respectively. This increase in the YP indicates an enhancement in the mud capability to suspend solids, thereby improving the homogeneity of the drilling fluid throughout the drilling operation. ,− Conversely, laponite had an insignificant influence on the PV, where the PV of all fluid samples was ranging between 33 and 38 cPa; consequently, no additional frictional pressure drop will result during fluid circulation . Furthermore, the increase in the YP without significantly increasing the PV helped maintain the YP to PV ratio (YP/PV) within a good range.…”

Section: Results and Discussionmentioning

confidence: 99%

Enhancement of Static and Dynamic Sag Performance of Water-Based Mud Using a Synthetic Clay

et al. 2021

Self Cite

View full text Add to dashboard Cite

Fluid homogeneity and stability are of high importance as they greatly affect the fluid performance in drilling operations. Solid settlement or solid sag is a severe issue that occurs in weighted drilling muds, especially at elevated temperatures, where the weight material tends to settle down causing well control problems. This study evaluates the effectiveness of a synthetic clay (laponite) to prevent the static and dynamic sag tendency of barite-weighted drilling fluid for elevatedtemperature drilling applications. Several high-density mud samples were prepared by varying the concentration of the synthetic clay. The sag tendency of the fluid samples was evaluated in the lab using dynamic and static sag tests, and the optimal concentration was determined. The impact of synthetic clay on the density, pH, and rheological properties was also studied. Moreover, the filtration properties of the developed formulation were measured using high-pressure high-temperature filtration experiments. The synthetic clay was found to be effective in reducing the static and dynamic sag tendency of barite-weighted water-based drilling fluids. 0.75 lb/bbl of laponite was adequate to eliminate solid sag at a temperature up to 250 F. This amount of laponite slightly increased the plastic viscosity by 8%, while an increase of 42% and 43−115% in the yield point and gel strength, respectively, was observed. A significant enhancement in the filtration performance was observed; the filter cake thickness and the filtrate volume were decreased by 15−20%. Additionally, the synthetic clay had an insignificant effect on the fluid density and pH.

show abstract

“…The parameter is very sensitive to the lithology and helped to identify the rock type and formations' boundary. Bageri et al [36] studied the effect of the drilled rock geomechanical properties on the drilling fluid properties as the cuttings from the drilled formations were mixed with the drilling fluids with different concentrations. The study showed that the cutting weight percentage in the total fluid, UCS, and E of the drilled sandstone affects the properties of the rheological properties of the drilling fluid.…”

Section: Of 18mentioning

confidence: 99%

Exposure Time Impact on the Geomechanical Characteristics of Sandstone Formation during Horizontal Drilling

et al. 2020

Self Cite

View full text Add to dashboard Cite

The rock geomechanical properties are the key parameters for designing the drilling and fracturing operations and for programing the geomechanical earth models. During drilling, the horizontal-section drilling fluids interact with the reservoir rocks in different exposure time, and to date, there is no comprehensive work performed to study the effect of the exposure time on the changes in sandstone geomechanical properties. The objective of this paper is to address the exposure time effect on sandstone failure parameters such as unconfined compressive strength, tensile strength, acoustic properties, and dynamic elastic moduli while drilling horizontal sections using barite-weighted water-based drilling fluid. To simulate the reservoir conditions, Buff Berea sandstone core samples were exposed to the drilling fluid (using filter press) under 300 psi differential pressure and 200 °F temperature for different exposure times (up to 5 days). The rock characterization and geomechanical parameters were evaluated as a function of the exposure time. Scratch test was implemented to evaluate rock strength, while ultrasonic pulse velocity was used to obtain the sonic data to estimate dynamic elastic moduli. The rock characterization was accomplished by X-ray diffraction, nuclear magnetic resonance, and scanning electron microscope. The study findings showed that the rock compression and tensile strengths reduced as a function of exposure time (18% and 19% reduction for tensile strength and unconfined compression strength, respectively, after 5 days), while the formation damage displayed an increasing trend with time. The sonic results demonstrated an increase in the compressional and shear wave velocities with increasing exposure time. All the dynamic elastic moduli showed an increasing trend when extending the exposure time except Poisson’s ratio which presented a constant behavior after 1 day. Nuclear magnetic resonance results showed 41% porosity reduction during the five days of mud interaction. Scanning electron microscope images showed that the rock internal surface topography and internal integrity changed with exposure time, which supported the observed strength reduction and sonic variation. A new set of empirical correlations were developed to estimate the dynamic elastic moduli and failure parameters as a function of the exposure time and the porosity with high accuracy.

show abstract

Effect of Formation Cutting’s Mechanical Properties on Drilling Fluid Properties During Drilling Operations

Cited by 11 publications

References 33 publications

Innovative Applications of Red Mud: Converting an Environmental Challenge to a Drilling Asset

Innovative Applications of Red Mud: Converting an Environmental Challenge to a Drilling Asset

Enhancement of Static and Dynamic Sag Performance of Water-Based Mud Using a Synthetic Clay

Exposure Time Impact on the Geomechanical Characteristics of Sandstone Formation during Horizontal Drilling

Contact Info

Product

Resources

About