Fracturing Fluids

Fink, Johannes Karl

doi:10.1016/b978-0-12-383844-5.00017-9

Cited by 24 publications

(32 citation statements)

References 33 publications

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“…Some additives that constitute the drilling fluids provide them with specific features that facilitate the drilling operation and grant stability. Among these additives are viscosity-enhancing agents (American Society of Mechanical Engineers, 2005), filtrate reducers (Bourgoyne et al , 1991), bactericides (Fink, 2015) and thickeners (Fink, 2015). Two clay minerals are used as additives with viscosity-enhancing properties, namely bentonite (Chemeda et al , 2013; Caenn et al , 2016) and palygorskite (Christidis et al , 2010; Chemeda et al , 2013; Dino & Thompson, 2013; Caenn et al , 2016).…”

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confidence: 99%

Use of palygorskite as a viscosity enhancer in salted water-based muds: effect of concentration of palygorskite and salt

Santanna

Silva

et al. 2020

Clay miner.

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Drilling fluids are essential for the operation and productivity of petroleum wells. This study compares the efficiency of a salted water-based mud for which the viscosity has been enhanced with polymeric compounds with that of a new salted water-based mud containing palygorskite clay, which mainly functions as a viscosity enhancer. The experiment measured the density, apparent viscosity, plastic viscosity, yield point, American Petroleum Institute filtrate and pH of the samples. The results indicate that the rheological properties of the fluids containing greater amounts of palygorskite were not affected significantly by the addition of salt. However, when the concentration of palygorskite was low, the rheological behaviour of the samples was appropriate to the drilling operation only with lesser amounts of salt. In addition to its good rheological properties, the filtrate volume obtained for samples containing greater concentrations of palygorskite was lower, which suggests that the filtration properties at the bottoms of the wells were controlled appropriately.

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confidence: 99%

Use of palygorskite as a viscosity enhancer in salted water-based muds: effect of concentration of palygorskite and salt

Santanna

Silva

et al. 2020

Clay miner.

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“…In order to achieve these functions, the drilling fluid must create a quick impermeable filter cake to seal-off all the porous formations (except the reservoir portion) as rapidly, effectively, and permanently as possible. Moreover, the drilling fluids should possess other characteristics, including: being non-damaging to the porous strata containing the hydrocarbons, being non-hazardous to the surroundings and the crew handling it, and not damaging the drilling equipment by corrosion or excessive wear 3 , 5 – 11 .…”

Section: Introductionmentioning

confidence: 99%

“…A filter cake is a result of driving the liquid phase of the drilling fluid into the formation, leaving the solid particles on the side wall of the well. An ideal filter cake should be completely impermeable in order to prevent fluid losses to the formation 3 , 5 , 12 . In addition, it is recommended for the filter cake thickness to be less than or equal to 0.16 of the wellbore diameter to be removed sufficiently by one pore hole volume (PHV) of the filter cake solvent 13 , 14 .…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the addition of drilled formation particles in the drilling fluid is controlled by the solid removal units consisting of shale shakers, desanders, desilters, and in some particular cases centrifuges. The use of these units is limited to reduce the cost of the drilling operations, especially if the change in the drilling fluid properties is not significant 2 , 3 , 23 .…”

Section: Introductionmentioning

confidence: 99%

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Complex barite filter cake removal using in-situ generated acids by thermochemicals

Bageri

Gomaa

Mahmoud

et al. 2020

Sci Rep

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In sandstone formations, the quartz particles integrate with drilling fluid solids and become part of the filter cake structure. As a result, the dissolution rate of the filter cake diminishes and reduces the removal efficiency. This paper presents a novel solution to overcome the challenges that restricts the filter cake removal process such as the presence of the quartz layer and the polymer coat. A multi-stage method for removing the filter cake from a wellbore is presented. The composition of the new formulation is; ammonium fluoride (NH4F), with a strong oxidizer, such as sodium bromate (NaBrO3) causes an exothermic reaction in the first stage, thereby removing the quartz layer and polymer coat in the filter cake by the in-situ generated HF acid. During the second stage for the barite-based filter cake, chelating agents combined with convertor catalysts were used to dissolve the barite. Solubility experiments were conducted to evaluate the efficiency at each stage in the filter cake removal process at 300 ºF and 500 psi. The experimental results showed that the formulation consisting of ammonium fluoride (NH4F), with a strong oxidizer (sodium bromate,NaBrO3), combined with exothermic reaction was able to generate HF in-situ, which in turn dissolved the quartz mineral and remove the polymer from the filter cake.

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“…Drilling muds are applied to lubricate and cool the drill bit, maintain hydrostatic equilibrium, and move drill cuttings to the surface during gas and oil drilling ( Okoro, 2011 ; Fattah and Lashin, 2016 ). To achieve desirable rheological properties and density, drilling mud is amended with additives, for example, with a liquid (water or diesel, mineral or synthetic oil), a weighting agent (barium or calcium sulfate), amargosite, sulfonated phenol formaldehyde (SPF) resin, and sulfonated lignite (SL) ( Fink, 2012 ). However, using oils, SPF resin and SL create potential environmental hazards, for example, since these additives are ecotoxic and increase the chemical oxygen demand (COD).…”

Section: Introductionmentioning

confidence: 99%

Combined Microbial Consortium Inoculation and Black Locust Planting Is Effective in the Bioremediation of Waste Drill Cuttings

et al. 2020

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Fracturing Fluids

Cited by 24 publications

References 33 publications

Use of palygorskite as a viscosity enhancer in salted water-based muds: effect of concentration of palygorskite and salt

Use of palygorskite as a viscosity enhancer in salted water-based muds: effect of concentration of palygorskite and salt

Complex barite filter cake removal using in-situ generated acids by thermochemicals

Combined Microbial Consortium Inoculation and Black Locust Planting Is Effective in the Bioremediation of Waste Drill Cuttings

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