Comparative Investigation of the Effect of EggshellPowder and Calcium Carbonate as Additivesin Eco-Friendly Polymer Drilling Fluids

Abstract

Drilling fluid systems have seen the addition of new natural additives in recent years in order to replace traditional additives, improve their rheological properties, and ensure the functionality of the drilling fluid taking into account health and environmental factors. This paper aims to study and compare the effect of the addition of eggshell powder (ESP) as a native and local additive and calcium carbonate (CC) as a traditional and conventional additive on the rheological and filtration properties of the drilling fluid system based on Na-bentonite of the region of Meghnia (Algeria). The test results of 10, 20, and 30gof CCwerecompared to the same concentrations of ESP.The findings showed that the CC with various concentrations (10, 20, and 30 g) increases the rheological properties and the mud density while it reduces the filter cake and the fluid loss values which are desirable, calcium carbonate had aslightly higher effect on the pH. The obtained results following the addition of ESP with different ratios revealed that the latter has a considerable impact on the plastic viscosity, the yield point, the gel strength, and the cake thickness. Additionally, the effect of the presence of eggshell as an additive in pH, fluid loss, and mud density was studied; we observed a slight increase in the pH, while the fluid loss values decreased. However, the mud density values increased. Beyond 20g of eggshell, the properties of the mud becomeundesirable. Moreover, this study contributes tonewfindings and suggests that the utilization of waste food and local goods in drilling mud mixtures has a bright future respecting the percentages of use.

Effect of silicon dioxide nanoparticles on the rheology properties of fresh and mechanically degraded hydrolyzed polyacrylamide polymer solutions

“…45 Moreover, the sensitivity of the degree of degradation to the shear rate is higher at the lowest concentration. This behavior can be explained by the fact that polymer molecules at high concentrations entangle, which creates physical cross-links between the chains and stronger chain interactions, 46,47 making it more difficult for external stresses to disrupt the polymer structure. 48 We proceed with the analysis only with the concentration of 4000 ppm, which is within the range of concentration in polymer injection projects, between 1000 and 5000 ppm.…”

Optimization of Partially Hydrolyzed Polyacrylamide (HPAM) Utilized in Water-Based Mud While Drilling

“…It involves changing the rheological properties of the displacement fluid by adding water soluble polymers [7][8][9][10]. A wide range of polymers, such as carboxymethylcellulose (CMC), xanthan gum, starches, and polyanionic cellulose (PAC), have been used in drilling fluid engineering to improve drilling fluid properties and avoid problems during drilling operations [11][12][13][14][15]. In addition, eco-friendly additives such as starch, polyphenols, and lignosulfonate showed a good filtration performance in Bentonite-water-based drilling fluids [16], along with the use of single-walled carbon nanotubes/polyvinyl pyrolidone (SWCNs/PVP) nanocomposites on the drilling efficiency of water-based muds, with the last forming a protective layer on the shale surface to obstruct the access of water and offering structural stability of the drilling mud [17].…”

Synthesis and mechanism study of an environmentally friendly filtrate reducing agent from humic acid and organic silicon

“…This helps maintain the stability of well walls and ensure the protection of oil and gas reservoirs 9 . Environmentally friendly filter loss reduction agents have emerged as one of the primary research focuses as a result of the expansion of national environmental standards 10 . However, the existing natural material‐based filter loss reducers are inadequate for drilling operations in deep, high‐temperature wells due to their inherent limitations.…”