Polyhydroxy gemini surfactant as a mechano-responsive rheology modifier for inverted emulsion drilling fluid

He, Youwei; Jiang, Guancheng; Deng, Zongquan; Liu, Fan; Su, Peng; Ni, Xiaoxiao; Shi, Yawei; Cui, Wuge

doi:10.1039/c7ra11300e

Cited by 18 publications

(3 citation statements)

References 36 publications

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“…Shear-thinning property of WBDs is very necessary for suspending cuttings and breaking rocks. WBDs exhibited low viscosity at the drilling bit to help break rocks, and maintained high viscosity at the annular space with the benefit of suspending and carrying cuttings [9]. The addition of PAC could increase viscosity and yield stress (τ 0 ) of the MAS and BT suspensions.…”

Section: Resultsmentioning

confidence: 99%

Magnesium Aluminum Silicate Nanoparticles and Polyanionic Cellulose as Additives in Low-Solid Water-Based Drilling Fluids

Wang

Jiang

Liu

et al. 2018

KEM

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This work demonstrated a nanosized material, magnesium aluminum silicate (MAS), as a rheological modifier for low-solid water-based drilling fluids (WBDs) to prompt the development of the safe and high-performance low-solid WBDs. To maintain good filtration property, the polyanionic cellulose (PAC) was introduced into the MAS suspension. Meanwhile, a comprehensive comparison between MAS cooperating with PAC and BT mixing with PAC was conducted. The addition of 0.5 wt% PAC increased the yield stress and generated better shear-thinning performance for 1 wt% MAS and 4 wt% bentonite (BT). The 1 wt% MAS/0.5 wt% PAC exhibited higher yield stress and shear-thinning performance than 4 wt% BT/0.5 wt% PAC. In addition, low-concentration MAS and MAS/PAC suspensions showed higher gel strength and rapider recovery performance compared with high-concentration BT and BT/PAC suspensions. MAS and MAS/PAC maintained excellent thermal stability, compared with other common rheological modifiers, such as xanthan gum (XG), hydroxyethyl cellulose (HEC). After hot rolling at 120 °C for 16 h, WBDs prepared by MAS/PAC exhibited a slight decrease of rheological parameters, which indicated high ability to resist high temperature. The XRF, particle size distribution, and TEM analysis revealed the mechanism of low-concentration MAS and MAS/PAC maintaining better shear-thinning performance, higher gel strength and yield stress. As the excellent rheological properties and thermal stability, MAS has the great potential to be a rheological modifier for low-solid WBDs.

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Section: Resultsmentioning

confidence: 99%

Magnesium Aluminum Silicate Nanoparticles and Polyanionic Cellulose as Additives in Low-Solid Water-Based Drilling Fluids

Wang

Jiang

Liu

et al. 2018

KEM

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“…In the nascent phase of this investigation, a small-molecule gelling agent was synthesized leveraging dibasic acid and diethanolamine as precursors, illustrating that the employment of amphiphilic small-molecule polymers for modulating emulsion interfacial film characteristics constitutes an efficacious strategy for fabricating a spatial network matrix [32]. Nevertheless, such gelling agents exhibit a confined number of adsorptive moieties, rendering them suboptimal for the rheological modulation of oil-in-water emulsions, particularly when juxtaposed with high-molecular-weight counterparts.…”

Section: Introductionmentioning

confidence: 99%

An Amphiphilic Multiblock Polymer as a High-Temperature Gelling Agent for Oil-Based Drilling Fluids and Its Mechanism of Action

He,

Du,

et al. 2023

Gels

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Oil-based drilling fluids are widely used in challenging wells such as those with large displacements, deepwater and ultra-deepwater wells, deep wells, and ultra-deep wells due to their excellent temperature resistance, inhibition properties, and lubrication. However, there is a challenging issue of rheological deterioration of drilling fluids under high-temperature conditions. In this study, a dual-amphiphilic segmented high-temperature-resistant gelling agent (HTR-GA) was synthesized using poly fatty acids and polyether amines as raw materials. Experimental results showed that the initial decomposition temperature of HTR-GA was 374 °C, indicating good thermal stability. After adding HTR-GA, the emulsion coalescence voltage increased for emulsions with different oil-to-water ratios. HTR-GA could construct a weak gel structure in oil-based drilling fluids, significantly enhancing the shear-thinning and thixotropic properties of oil-based drilling fluids under high-temperature conditions. Using HTR-GA as the core, a set of oil-based drilling fluid systems with good rheological properties, a density of 2.2 g/cm3, and temperature resistance up to 220 °C were constructed. After aging for 24 h at 220 °C, the dynamic shear force exceeded 10 Pa, and G′ exceeded 7 Pa, while after aging for 96 h at 220 °C, the dynamic shear force exceeded 4 Pa, and G″ reached 7 Pa. The synthesized compound HTR-GA has been empirically validated to significantly augment the rheological properties of oil-based drilling fluids, particularly under high-temperature conditions, showcasing impressive thermal stability with a resistance threshold of up to 220 °C. This notable enhancement provides critical technical reinforcement for progressive exploration endeavors in deep and ultra-deep well formations, specifically employing oil-based drilling fluids.

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“…Drilling fluid is a general term for various circulating fluids during drilling and is always divided into two types according to the continuous phase, the water-based ones and the oil-based ones. − Drilling fluids have a variety of functions including (1) carrying and suspending the cuttings, (2) stabilizing the wellbore and balancing geological pressure, (3) cooling and lubricating the drill bit, and (4) transmitting hydrodynamics, and so forth . In recent years, with the development of oil and gas exploitation, the number of drilling operations in deep water has been increasing gradually .…”

Section: Introductionmentioning

confidence: 99%

Study on Morphology and Rheological Property of Organoclay Dispersions in Soybean Oil Fatty Acid Ethyl Ester over a Wide Temperature Range

Jiang

Shi

et al. 2020

ACS Omega

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This work attempted to establish the relationship between the dispersion morphology and the viscous flow behavior of clay dispersions in soybean oil fatty acid ethyl ester (FAEE) at 2 and 65 °C. The clays used in this study include raw montmorillonite (Mt) and three kinds of organoclays prepared by ion exchange modification of Mt by cetyltrimethylammonium chloride (OC16), dihexadecyldimethylammonium chloride (ODC16), and trihexadecylmethylammonium chloride (OTC16), respectively. The X-ray diffraction and water contact angle results demonstrated that greater alkyl chain number of surfactants led to greater interlayer space and stronger hydrophobicity of organoclays. Due to the good affinity of the surfactant and FAEE, OC16 exhibited the most stable dispersion in FAEE between 2–65 °C, which resulted in the best flat rheological property. The molecular structures of multiple chain surfactants were quite different from that of FAEE, resulting in weak affinity between organoclays (ODC16 and OTC16) and FAEE. The sheets of ODC16 and OTC16 tended to aggregate at 2 °C, forming a gel structure, thus significantly increasing the low shear rate viscosity (LSRV) and yield stress. At 65 °C, with the expansion of FAEE and the stronger thermal motion of sheets, the dispersions of ODC16 and OTC16 were improved, destroying the original gel structure and resulting in significant decreases in LSRV and yield stress. This study confirmed that stable clay/FAEE dispersions tended to exhibit flat rheology, which could serve as a basis for the application of clay/biodiesel dispersion in deep-water drilling.

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Polyhydroxy gemini surfactant as a mechano-responsive rheology modifier for inverted emulsion drilling fluid

Abstract: The interfacial accumulation of PGS makes interfacial film gel-like and droplets attractive, resulting in mechano-responsive rheology modification for inverted emulsions.

Cited by 18 publications

References 36 publications

Magnesium Aluminum Silicate Nanoparticles and Polyanionic Cellulose as Additives in Low-Solid Water-Based Drilling Fluids

Magnesium Aluminum Silicate Nanoparticles and Polyanionic Cellulose as Additives in Low-Solid Water-Based Drilling Fluids

An Amphiphilic Multiblock Polymer as a High-Temperature Gelling Agent for Oil-Based Drilling Fluids and Its Mechanism of Action

Study on Morphology and Rheological Property of Organoclay Dispersions in Soybean Oil Fatty Acid Ethyl Ester over a Wide Temperature Range

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