Laboratory investigations on the effects of surfactants on rate of penetration in rotary diamond drilling

Li, Wai; Zhao, Xin; Li, Yufei; Ji, Yihui; Peng, Hui; Liu, Lan; Yang, Qi

doi:10.1016/j.petrol.2015.07.027

Cited by 41 publications

(8 citation statements)

References 14 publications

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“…After treatment with 2 wt% laponite suspension, the surface of shale sample became seamless (Fig. 7b), and the majority of pores and fractures disappeared, which would be beneficial to prevent water from penetration (Huang et al 2018;Li et al 2015;Yao et al 2020a;Yao et al 2020b). In conclusion, laponite suspension can effectively plug pores and fractures of formations.…”

Section: Plugging Performancementioning

confidence: 82%

Laponite: a promising nanomaterial to formulate high-performance water-based drilling fluids

et al. 2020

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High-performance water-based drilling fluids (HPWBFs) are essential to wellbore stability in shale gas exploration and development. Laponite is a synthetic hectorite clay composed of disk-shaped nanoparticles. This paper analyzed the application potential of laponite in HPWBFs by evaluating its shale inhibition, plugging and lubrication performances. Shale inhibition performance was studied by linear swelling test and shale recovery test. Plugging performance was analyzed by nitrogen adsorption experiment and scanning electron microscope (SEM) observation. Extreme pressure lubricity test was used to evaluate the lubrication property. Experimental results show that laponite has good shale inhibition property, which is better than commonly used shale inhibitors, such as polyamine and KCl. Laponite can effectively plug shale pores. It considerably decreases the surface area and pore volume of shale, and SEM results show that it can reduce the porosity of shale and form a seamless nanofilm. Laponite is beneficial to increase lubricating property of drilling fluid by enhancing the drill pipes/wellbore interface smoothness and isolating the direct contact between wellbore and drill string. Besides, laponite can reduce the fluid loss volume. According to mechanism analysis, the good performance of laponite nanoparticles is mainly attributed to the disk-like nanostructure and the charged surfaces.

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Section: Plugging Performancementioning

confidence: 82%

Laponite: a promising nanomaterial to formulate high-performance water-based drilling fluids

et al. 2020

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“…Drilling fluid is an important part of the drilling process in the oil and gas sector. This fluid is made up of a mixture of natural and synthetic components (clay and/or chemical additives) as well as a liquid phase (water or oil) that is used for a variety of functions, including cuttings removal, formation pressure control, wellbore stability, cooling and cleaning the bit, reducing friction between the drilling string and the sides of the hole, forming a filter cake to seal pores, assisting in the collection and interpretation of information, and enhancing the rate of penetration. , These functions can be well-accomplished if the rheology of drilling fluids is properly treated . Additionally, the rheological and filtration properties of drilling fluids, such as density (ρ), plastic viscosity (PV), apparent viscosity (AV), yield point (YP), gel strength (GS), filtration rate, and filter cake, are critical for wellbore stability and drilling efficiency.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Nanoinhibitive Drilling Fluid on the Shale Swelling Performance at High Temperature and High Pressure

et al. 2022

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Borehole stability is one of the crucial success elements of the drilling operation, which is partially dependent upon the chemistry of the drilling fluid. Nanoparticles are emerging as one of the most significant additives for improving the major properties of drilling fluids. Thus, SiO2/KCl/xanthan nanocomposites (NCs) was synthesized from Euphorbia condylocarpa extract in an eco-friendly and environmentally friendly way. The synthesized NCs was used to prepare nanoinhibitive drilling fluids (NIDFs) at different concentrations to improve the rheological, filtration, and inhibition properties of the drilling fluid. All of the required experimental tests related to the rheology, filtration, and swelling measurements were performed at the ambient and high temperature and high pressure (HTHP) conditions. The obtaining results revealed that the rheological properties of the drilling fluids (plastic viscosity, yield point, and gel strength) were improved from 4 cP, 10 lb/100 ft2, and 27 lb/100 ft2 to 19 cP, 17 lb/100 ft2, and 46 lb/100 ft2 (with adding 4000 ppm of KCl) and 19 cP, 62 lb/100 ft2, and 54 lb/100 ft2 (with adding 4000 ppm of synthesized NCs), respectively. In addition, the filtration properties of the base drilling fluid were increased by adding 4000 ppm of KCl at HTHP (fluid loss from 25.85 to 36.38 mL and thickness of the filter cake from 3.4 to 5.1 mm), while the synthesized NCs was more effective in lowering the fluid loss and filter cake thickness from 25.85 mL and 3.5 mm to 2.5 mL and 0.33 mm, respectively. Moreover, NIDFs were favorable in decreasing shale swelling that was 52.2%, but conventional inhibitive drilling fluids could lower shale swelling by 41%. It can be stated that NIDFs are highly applicable toward the successful drilling operation as a result of their abilities in reducing shale swelling, improving rheological properties, and decreasing the filtration properties.

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“…The shale surface is usually hydrophilic, and capillary force is one of the driving forces for water to invade the shale formation. As shown in formula , the capillary force is proportional to the surface tension, so reducing the surface tension will help reduce the water intake of shale, thereby weakening the hydration of shale. ,− where p c is the capillary force (Pa), σ is the surface tension of the testing fluid (mN m –1 ), θ is the contact angle (deg), and r is the pore-throat radius of shale sample (mm).…”

Section: Resultsmentioning

confidence: 99%

Novel Deep Eutectic Solvents for Stabilizing Clay and Inhibiting Shale Hydration

Pang

Zhou

et al. 2021

Energy Fuels

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The hydration and swelling of shale caused by water in water-based drilling fluids is one of the most important problems that causes wellbore instability. The development of high-performance shale inhibitors is an important prerequisite for ensuring the drilling of shale formations. In this study, four deep eutectic solvents (DESs) based on choline chloride (urea-DES, Gly-DES, Oxa-DES, and Cit-DES) were synthesized and introduced as promising shale inhibitors. Fourier transform infrared spectroscopy (FT-IR) and hydrogen nuclear magnetic resonance spectroscopy (1H NMR) were used to characterize the structural information on DESs. The inhibition ability of DESs was evaluated by a bentonite inhibition test, a linear swelling test, and a settlement test. Compared with the traditional inhibitors, such as potassium chloride (KCl) and polyether amine, the four DESs can effectively inhibit the hydration and swelling of shale. Five wt % DESs can maintain low rheological parameters when the content of sodium bentonite (Na-bent) was as high as 40 wt %. Among them, Gly-DES not only exhibited the most efficient inhibition capability but also had the advantage of not affecting the basic performance of the drilling fluid. Inhibitory mechanism analysis showed that the electrostatic interaction and hydrogen bonding between DESs and sodium bentonite (Na-bent) are the most important factors to inhibit clay hydration. Besides, the reduction of the surface tension of the liquid by DESs effectively weakened the driving force for water to penetrate the Na-bent layer. Finally, it is important to note that, although DESs exhibited strong inhibitory capabilities, some DESs, such as Oxa-DES and Cit-DES, are prone to adversely affect the basic performance of drilling fluids. Therefore, a careful selection is required.

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Laboratory investigations on the effects of surfactants on rate of penetration in rotary diamond drilling

Cited by 41 publications

References 14 publications

Laponite: a promising nanomaterial to formulate high-performance water-based drilling fluids

Laponite: a promising nanomaterial to formulate high-performance water-based drilling fluids

Synergistic Effect of Nanoinhibitive Drilling Fluid on the Shale Swelling Performance at High Temperature and High Pressure

Novel Deep Eutectic Solvents for Stabilizing Clay and Inhibiting Shale Hydration

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