Dependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent

Construction of offshore gas wells is characterized by increased requirements for both the technological process in general and the technological parameters of drilling fluids in particular. Parameters and properties of the used drilling muds must meet a large number of requirements. The main one is...

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Autores principales:	Ekaterina Leusheva, Valentin Morenov, Tianle Liu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	drilling fluid equivalent circulation density formate fluid weighted mud polymer reagent preservation of formation permeability Technology T
Acceso en línea:	https://doaj.org/article/b1da5bc4b9cf40d6ba3ad278088a611a
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spelling	oai:doaj.org-article:b1da5bc4b9cf40d6ba3ad278088a611a2021-11-25T17:27:28ZDependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent10.3390/en142276391996-1073https://doaj.org/article/b1da5bc4b9cf40d6ba3ad278088a611a2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7639https://doaj.org/toc/1996-1073Construction of offshore gas wells is characterized by increased requirements for both the technological process in general and the technological parameters of drilling fluids in particular. Parameters and properties of the used drilling muds must meet a large number of requirements. The main one is the preservation of the permeability of the reservoirs, in addition to the environmental and technological concerns. At the same time, pressures in the productive formation at offshore fields are often high; the anomaly coefficient is 1.2 and higher. The use of barite in such conditions can lead to contamination of the formation and a decrease in future well flow rates. In this regard, the development and study of the compositions for weighted drilling muds is necessary and relevant. The paper presents investigations on the development of such a composition based on salts of formic acid (formates) and evaluates the effect of the molecular weight of the polymer reagent (partially hydrolyzed polyacrylamide) on the equivalent circulation density of the drilling fluid. The result of the work is a formate-based high-density drilling mud with no barite added. Application of such a mud will preserve the permeability of the productive formation.Ekaterina LeushevaValentin MorenovTianle LiuMDPI AGarticledrilling fluidequivalent circulation densityformate fluidweighted mudpolymer reagentpreservation of formation permeabilityTechnologyTENEnergies, Vol 14, Iss 7639, p 7639 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	drilling fluid equivalent circulation density formate fluid weighted mud polymer reagent preservation of formation permeability Technology T
spellingShingle	drilling fluid equivalent circulation density formate fluid weighted mud polymer reagent preservation of formation permeability Technology T Ekaterina Leusheva Valentin Morenov Tianle Liu Dependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent
description	Construction of offshore gas wells is characterized by increased requirements for both the technological process in general and the technological parameters of drilling fluids in particular. Parameters and properties of the used drilling muds must meet a large number of requirements. The main one is the preservation of the permeability of the reservoirs, in addition to the environmental and technological concerns. At the same time, pressures in the productive formation at offshore fields are often high; the anomaly coefficient is 1.2 and higher. The use of barite in such conditions can lead to contamination of the formation and a decrease in future well flow rates. In this regard, the development and study of the compositions for weighted drilling muds is necessary and relevant. The paper presents investigations on the development of such a composition based on salts of formic acid (formates) and evaluates the effect of the molecular weight of the polymer reagent (partially hydrolyzed polyacrylamide) on the equivalent circulation density of the drilling fluid. The result of the work is a formate-based high-density drilling mud with no barite added. Application of such a mud will preserve the permeability of the productive formation.
format	article
author	Ekaterina Leusheva Valentin Morenov Tianle Liu
author_facet	Ekaterina Leusheva Valentin Morenov Tianle Liu
author_sort	Ekaterina Leusheva
title	Dependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent
title_short	Dependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent
title_full	Dependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent
title_fullStr	Dependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent
title_full_unstemmed	Dependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent
title_sort	dependence of the equivalent circulation density of formate drilling fluids on the molecular mass of the polymer reagent
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b1da5bc4b9cf40d6ba3ad278088a611a
work_keys_str_mv	AT ekaterinaleusheva dependenceoftheequivalentcirculationdensityofformatedrillingfluidsonthemolecularmassofthepolymerreagent AT valentinmorenov dependenceoftheequivalentcirculationdensityofformatedrillingfluidsonthemolecularmassofthepolymerreagent AT tianleliu dependenceoftheequivalentcirculationdensityofformatedrillingfluidsonthemolecularmassofthepolymerreagent
_version_	1718412369639505920

Dependence of the Equivalent Circulation Density of Formate Drilling Fluids on the Molecular Mass of the Polymer Reagent

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