The effect of inorganic salt on the structure of filter cake of water based drilling fluid

Rugang, Y.; Guancheng, J.; Longyun, Y.; Wei, L.; Tianqing, D.

doi:10.5510/ogp20140100185

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…To control filtrate loss to the formation, specific additives are generally used that increase the fluid's viscosity so that filter cake is formed inside and outside the borehole . If these additives are not selected properly, they can cause a significant reduction of the permeability and damages to the formation …”

Section: Introductionmentioning

confidence: 99%

Polymer microspheres: Influence of composition and porosity on filtrate reduction from aqueous fluids

Rodrigues

Nunes

Ribeiro

et al. 2016

J of Applied Polymer Sci

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During the drilling and completion of oil wells, the drilling fluid flowing down the annulus can invade the rock formation, possibly causing irreversible damage to the reservoir. One of the main functions of these fluids is to form a film with low permeability on the borehole wall to prevent invasion of filtrate in the rock formation. Polymeric additives are increasingly used to control these infiltrations. Recent studies have shown the potential of using microspheres made of poly(methyl methacrylate-co-vinyl acetate) (PMMA-co-PVAc) with dimensions compatible with the size of the formation pores. In this study, PMMA and PMMAco-PVAc polymers were synthesized by suspension polymerization, producing in the presence or absence of porogenic agents. The particles porosities influence the glass transition temperature, surface roughness and apparent density. The results also demonstrate that less rigid spheres with pores in their structure form a more efficient barrier against filtration to the rock formation. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44484.

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Section: Introductionmentioning

confidence: 99%

Polymer microspheres: Influence of composition and porosity on filtrate reduction from aqueous fluids

Rodrigues

Nunes

Ribeiro

et al. 2016

J of Applied Polymer Sci

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“…For example, Elkatatny et al [10,21] found the filter cake was composed of two layers, and the microstructure, thickness and porosity of the cake layer were characterized by using SEM and CT scan. Y.Rugang et al [22,23] claimed that drilling fluid components have a non-negligible effect on filter cake characteristics, and presented the effect of inorganic salt on the structure of filter cake of water based drilling fluid.…”

Section: Introductionmentioning

confidence: 99%

Study on the structure of filter cake layer of water based drilling fluid

Yao¹,

Chunyao²,

Zhen-hua³

et al. 2017

SOCAR Proceedings

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A b s t r a c tThe objective of this work is to provide a new insight into the spatial distribution of physical, chemical structure of the filter cake layer. The spatial distribution was characterized by various analytical techniques, including high-temperature high-pressure (HTHP) fluid loss test, scanning electron microscopy (SEM), energy dispersive spectrum (EDs), particle size distribution (PSD), fluorescence test, pore size, porosity, density, water and polymer content measurement etc.. Specific cake resistance and the permeability of the filter cake were measured. The results obtained show that the spatial distribution of filter cake layer structure changes from the top layer to bottom layer. A large amount of deformable colloid particles in the filter cake layer is beneficial to the reducing of the cake permeability. The polymer and water content of the cake layer decreased from the top cake layer to the bottom cake layer. Through the SEM images, cake layer was found to have a loose outer surface when compared with the bottom cake layer.

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The effect of inorganic salt on the structure of filter cake of water based drilling fluid

Cited by 2 publications

References 12 publications

Polymer microspheres: Influence of composition and porosity on filtrate reduction from aqueous fluids

Polymer microspheres: Influence of composition and porosity on filtrate reduction from aqueous fluids

Study on the structure of filter cake layer of water based drilling fluid

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