Emulsions of glycerol in olefin: A critical evaluation for application in oil well drilling fluids

Celino, Karoline Nóbrega; Souza, Elessandre Alves de; Balaban, Rosângela de Carvalho

doi:10.1016/j.fuel.2021.121959

Cited by 12 publications

(5 citation statements)

References 30 publications

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“…Nonetheless, using the chemicals in fabricating EBDFs, they are more expensive compared to petrodiesel and mineral oil. Furthermore, the use of EBDFs has also been limited as a result of a number of issues, including challenging viscosity control and instability in downhole conditions. − As a result, oil companies are particularly interested in water-based mud (WBM) that has an excellent performance. Shale stabilizers or common inhibitors were used in traditional WBMs; however, they could not plug the shale nanopores, resulting in water intrusion into the wellbore, causing mud filtrate and clay swelling in huge quantities.…”

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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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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“…However, the continuous phases of OBDF consist of diesel oil or mineral oil, which are not environmentally friendly [5,6]. SBDF has similar performance to OBDF, and causes less pollution to the environment, but is difficult to promote due to its higher price [7,8]. WBDF has the least environmental impact and its price is low, making it easy to popularize [9].…”

Section: Introductionmentioning

confidence: 99%

Study of a novel cross linked graft copolymer starch in water-based drilling fluid

You

Hou

et al. 2023

Mater. Res. Express

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In the drilling industry, the demand for environmentally friendly additives with high thermal stability is increasing due to the dual factors of increasing environmental pressure and high-temperature oil layers. However, commonly used non-toxic and biodegradable additives, such as etherified modified starch, cannot withstand temperatures higher than 150 °C. Additionally, natural polymers with better thermal stability obtained through graft modification with sulfonated monomers face challenges in meeting the standards of toxicity and biodegradability. To address these technical problems, a novel graft and crosslink copolymer, St-AA/AM/NVP/MBA (SAANM), was synthesized from corn starch by combining graft modification with a non-sulfonated monomer and cross-linking modification. Laboratory evaluation results confirm that the thermal stability of SAANM in a nitrogen atmosphere was close to 300 ℃, and it exhibits excellent temperature resistance up to 170 °C in bentonite-based mud, while also retaining the non-toxic and biodegradable characteristics of starch. The water-based drilling fluid (WBDF), added with SAANM, demonstrated outstanding rheological properties, fluid loss control performance, and environmental friendliness after aging at 170 °C and being polluted by high concentrations of NaCl or CaCl2. The successful application of SAANM in a high-temperature directional well in an offshore oil field confirms its potential for borehole cleaning and wellbore stability.

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“…According to the different components, drilling fluids can be divided into three types: water‐based drilling fluid (WBDF), oil‐based drilling fluid (OBDF) and synthetic‐based drilling fluid (SBDF) 9 . OBDF and SBDF are widely used because of their excellent high‐temperature stability and inhibition, which can effectively reduce the invasion of fluid and prevent the hydration of clay minerals 10,11 . However, it is difficult to be popularized because of its high cost, difficult post‐treatment, serious pollution and unfriendly to the environmental 12 .…”

Section: Introductionmentioning

confidence: 99%

“…9 OBDF and SBDF are widely used because of their excellent high-temperature stability and inhibition, which can effectively reduce the invasion of fluid and prevent the hydration of clay minerals. 10,11 However, it is difficult to be popularized because of its high cost, difficult post-treatment, serious pollution and unfriendly to the environmental. 12 Compared with OBDF and SBDF, WBDF has more outstanding advantages in cost control and environmental protection, and becomes a more reasonable choice.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel zwitterionic polymers and their properties as filtrate reducer for water‐based drilling fluid

Bai,

Wu,

Zhang

et al. 2023

J of Applied Polymer Sci

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The development of high‐temperature and salt‐resistant filtrate reducer is of great significance to the exploitation of deep and ultra‐deep wells. In this study, Zwitterionic copolymer PANDS was synthesized by free radical polymerization using acrylamide (AM), N‐vinylpyrrolidone (NVP), methacryloxyethyl trimethyl ammonium chloride (DMC) and sodium p‐styrene sulfonate (SSS) as monomers. Through orthogonal test, the optimum synthesis conditions were determined as follows: n (AM): n (NVP): n (SSS): n (DMC) = 3.5:2:0.5:0.5, the reaction temperature is 50°C, the initiator concentration is 0.4 wt%. The structure and thermal stability of the copolymers were analyzed by Fourier transform infrared spectroscopy (FT‐IR), nuclear magnetic resonance spectroscopy (1H‐NMR) and thermogravimetry (TG). In addition, the filtration reduction performance of PANDS was evaluated according to the American Petroleum Institute (API) standard. The mechanism of reducing filtration loss was studied by laser particle size analysis, Zeta potential and scanning electron microscope analysis of mud cake. The results show that PANDS has good temperature resistance and good filtrate loss reduction. With the addition of 1.5%PANDS, the filtrate loss of drilling fluid is 8.7 mL after aging at 160°C for 16 h, and can resist 6 wt% NaCl and 1 wt% CaCl2.

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Emulsions of glycerol in olefin: A critical evaluation for application in oil well drilling fluids

Cited by 12 publications

References 30 publications

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

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

Study of a novel cross linked graft copolymer starch in water-based drilling fluid

Synthesis of novel zwitterionic polymers and their properties as filtrate reducer for water‐based drilling fluid

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