A Comparison Between Two Biopolymers Used in Drillings Muds

Hamed, Samira Baba; Belhadri, Mansour

doi:10.1080/10916460902804697

Cited by 10 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[3,4] The triple helix, which gives rod-like rigidity to the polymer, is denatured at pH above 12 or in dimethylsulfoxide (DMSO) solutions [5] and is restored again in water, through a series of intermediate meta-stable structures (circular, hairpin, aggregates, or linear structures). For instance, it is employed in the oil industry in drilling muds [8] and for enhanced oil recovery, in the food industry as a thickener and gelling and stabilizing agent, and in animal feed composition. [2] Because of its peculiar rheological properties and its resistance to hydrolysis, temperature, and electrolytes, scleroglucan is used for different applications.…”

Section: Nmr Characterization Of Carboxymethyl Scleroglucanmentioning

confidence: 99%

NMR Characterization of Carboxymethyl Scleroglucan

Cerreto

Corrente

Botta

et al. 2013

International Journal of Polymer Analysis and Characterization

View full text Add to dashboard Cite

High field NMR characterization of carboxymethyl scleroglucan (Scl-CM) recently synthesized through reaction of the native polymer (Scl) with chloroacetic acid in basic conditions is discussed, reporting the position of the carboxymethyl groups in the scleroglucan moiety. The comparison between the Scl-CM and the Scl structures can be useful to comprehend their different profiles in the viscosity-shear rate curves and their different ability to form physical gels

show abstract

Section: Nmr Characterization Of Carboxymethyl Scleroglucanmentioning

confidence: 99%

NMR Characterization of Carboxymethyl Scleroglucan

Cerreto

Corrente

Botta

et al. 2013

International Journal of Polymer Analysis and Characterization

View full text Add to dashboard Cite

show abstract

Optimizing the transport of cuttings with ecological drilling muds: application to directional well

Hamed

2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

This study is justified by the issues on site in directional well as blowouts, abnormal formation pressure, obstructions in the wellbore, inaccessible target locations caused by an obstacle (for example dome of salt) and the pollution of formations. The objective of this study is to optimize the hole cleaning in directional well with environmentally drilling muds. For this goal, different formulations of "green" drilling muds were tested for 4 inclinations of 10°, 20°, 30° and 40° compared with a horizontal plane for modeling the vertical drill. The drilling muds used are water based with environmentally friendly products; this study tested two biopolymer-based formulations, which are the constants of the experiment. For the specific needs of drilling muds, different products as clay, weighting and potassium chloride were added to the based solution. The microstructure and quantification of the chemical content of biopolymers were examined with SEM-EDS (scanning electronic microscope and energy dispersive X-ray spectrometer). Rheological properties were evaluated with modular rheometer; biopolymer solutions exhibit a non-Newtonian behavior. The samples tested in this study are compliant with API standards. For a suspension of macroscopic particles in the non-Newtonian environment, the sedimentation velocity shows a rapid increase according to the angle value which is well known in macroscopic suspensions under the name of "Boycott effect". The results showed the close link between the composition of the drilling mud and its ability to transport cuttings predictive for directional drilling.

show abstract