Viscoelastic properties of drilling fluids and their influence on cuttings transport

Werner, Benjamin; Myrseth, Velaug; Saasen, Arild

doi:10.1016/j.petrol.2017.06.063

Cited by 94 publications

(56 citation statements)

References 8 publications

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“…However, such a dynamic yield stress is not the same as a gel strength which could build up in a cuttings bed with stagnant fluid. Additional rheological measurements conducted on these fluids revealed differences in the viscoelastic responses which resolves this apparent contradiction (Werner et al, 2017). Amplitude sweep tests showed (see Figure 11) that WBM exhibits dominant viscous behavior and OBM exhibits dominant elastic behavior, which indicates presence of microstructure in the OBM.…”

Section: Figure 7 Reynolds Number At Various Flow Velocities For Wbm mentioning

confidence: 65%

Hole-cleaning performance comparison of oil-based and water-based drilling fluids

Sayindla

Lund

Ytrehus

et al. 2017

Journal of Petroleum Science and Engineering

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Cuttings transport is a topic of great interest in the oil and gas drilling industry. Insufficient cuttings transport leads to several expensive problems. Knowledge and selection of the drilling fluids is one of the important factor for efficient hole cleaning. It has been observed, however, that the hole cleaning performance of drilling fluids can be different even if the fluid rheological properties are similar as measured in accordance with API specifications. The reasons for stated difference in the behavior of drilling fluids are not well understood. The main objective of present work is to evaluate hole cleaning efficiency of an oil-based drilling fluid (OBM) and a water-based drilling fluid (WBM) whose viscosity profiles are similar as per API specifications.Hole cleaning efficiency of an oil-based drilling fluid and a water-based drilling fluid whose rheological properties are similar was investigated. The fluids tested were industrial fluids used in the field and were sent to us after reconditioning. Experimental studies were performed on an advanced purpose-built flow-loop by varying flow velocities and drill string rotation rates. The flow loop had a 10 m long annulus section with 4" inner diameter wellbore and 2" outer diameter fully eccentric drill string. Pressure drop and sand holdup measurements were reported. Rheological investigations of the same fluids were used to understand the difference in the behavior of the drilling fluids tested. Higher pressure drop was observed for WBM compared to OBM, and for both fluids, the pressure drop increased with drill string rotation speed. In case of no drill string rotation, better hole cleaning performance was observed with the oil-based fluid compared to the water-based fluid. With the presence of drill string rotation, hole cleaning performance of both the fluids was nearly the same.

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Section: Figure 7 Reynolds Number At Various Flow Velocities For Wbm mentioning

confidence: 65%

Hole-cleaning performance comparison of oil-based and water-based drilling fluids

Sayindla

Lund

Ytrehus

et al. 2017

Journal of Petroleum Science and Engineering

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“…Fluid prepared with starch ester as filtration control additive displayed higher rheological parameters than the one prepared with the commercial additive. Starch ester based fluid presented higher viscosity, which can promotes a better cleaning of the wellbore and, differently of commercial additive based fluids, presents gel strength and a higher yield point, that can help on maintaining cuttings in suspension in static conditions [52]. As also demonstrated in Tab.…”

Section: Rheologymentioning

confidence: 81%

“…Low viscosity at the highest shear rates is required to clean the wellbore from drilled rock cuttings, to decrease pumping pressures and limit flow properties, promoting the increase of penetration rates. Whereas high viscosity at the lowest shear rates, help to carry cuttings from the well bottom to the surface, avoiding cutting accumulation in the borehole and proceed drilling [52,53].…”

Section: Rheologymentioning

confidence: 99%

Turning Industrial Waste into a Valuable Bioproduct: Starch from Mango Kernel Derivative to Oil Industry Mango Starch Derivative in Oil Industry

Ito¹,

Marques²,

Garcia³

et al. 2019

Journal of Renewable Materials

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After industrial mango processing, tons of residues such as peels and kernels are discarded as waste. Nevertheless, almost 60% of the mango kernel is due to starch on a dry weight basis. Herein, starch from mango (Manguifera Indica L.) kernel was applied to obtain a starch fatty ester with vinyl laurate, in DMSO, under basic catalysis. FTIR, 1 H and 13 C NMR confirmed that a starch ester with a degree of modification of 2.6 was produced. TGA showed that the modified starch has higher thermal stability than its precursors and higher than a vinyl laurate/starch physical blend. SEM data showed that granular shape and smooth surface on mango starch changed after chemical modification to a continuous and shapeless morphology. This industrial reject derivative behaved as an efficient alternative environmentally friendly fluid loss controller in oil drilling fluids, even in conditions of high temperatures and high pressures (HTHP) drilling.

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“…Drilling fluids have routinely been used in the oil and gas industry for several years, and such fluids have served many roles, such as balancing formation pressures in the wellbore, lubricating the drill string and so forth (Beck et al 1947;Bland et al 2006;Duan et al 2008;Hussaini and Azar 1974;Katende et al 2019;Ozbayoglu et al 2010;Pigott 1941;Saboori et al 2018;Salehi et al 2016;Saxena et al 2017;Sayindla et al 2017;Shu and Ma 2016;Sifferman et al 1974;Werner et al 2017). Nevertheless, an essential role of drilling fluid is to lift cuttings from the drill bit through the annular section and to the surface (Becker and Azar 1985;Clark and Bickham 1994;Frigaard et al 2017;Heshamudin et al 2019;Luo et al 1994;Majid et al 2018;Onuoha et al 2015;Shu and Zhang 2018a, b;Yu et al 2004).…”

Section: Introductionmentioning

confidence: 99%

The effect of drill–pipe rotation on improving hole cleaning using polypropylene beads in water-based mud at different hole angles

Katende

Segar

Ismail

et al. 2019

J Petrol Explor Prod Technol

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Hole cleaning is always a problem, particularly during drilling operations, and drilling fluid plays an important role in transporting drill cuttings through an annular section of wellbore to the surface. To transport the cuttings, a water-based mud with added polypropylene beads was selected since it is environmentally friendly and cost efficient. The polypropylene beads help to transport cuttings by providing an additional buoyancy force that lifts the cuttings to the surface via the influence of collision and drag forces. This experiment was performed using a 20 ft test section, 10 ppg drilling mud and 0.86 m/s annular velocity in a laboratory scale rig simulator, and the concentration of polypropylene beads was varied from 0 to 8 ppb. As the concentration of polypropylene increases, the cutting transport ratio also increases. It was observed that the fewest cuttings are lifted at a critical angle of 60°, followed by 45°, 30°, 90° and 0°. Additionally, cutting sizes had moderate effects on the cutting lifting efficiency, where smaller cutting sizes (0.5-1.0 mm) are easier to lift than larger cutting sizes (2.0-2.8 mm). Furthermore, a study of buoyancy force and impulsive force was conducted to investigate the cutting lifting efficiencies of various concentrations of polypropylene beads. This lifting capacity was also assisted by the presence of polyanionic cellulose (PAC), which increases the mud carrying capacity and is effective for smaller cuttings. The results show that in the presence of pipe rotation, the cutting lifting efficiency is slightly enhanced due to the orbital motion provided by the drill pipe for better hole cleaning. In conclusion, polypropylene beads combined with pipe rotation increase the cutting transport ratio in the wellbore.

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Viscoelastic properties of drilling fluids and their influence on cuttings transport

Cited by 94 publications

References 8 publications

Hole-cleaning performance comparison of oil-based and water-based drilling fluids

Hole-cleaning performance comparison of oil-based and water-based drilling fluids

Turning Industrial Waste into a Valuable Bioproduct: Starch from Mango Kernel Derivative to Oil Industry Mango Starch Derivative in Oil Industry

The effect of drill–pipe rotation on improving hole cleaning using polypropylene beads in water-based mud at different hole angles

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