Nano-laponite/polymer composite as filtration reducer on water-based drilling fluid and mechanism study

Dong, Xiaodong; Sun, Jinsheng; Huang, Xianbin; Lv, Kaihe; Zhou, Zhishi; Gao, Chongyang

doi:10.1098/rsos.220385

Cited by 22 publications

(5 citation statements)

References 51 publications

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“…At 240 °C, the FL API value was 9.0 mL and the FL HTHP value was 41.6 mL. The interaction of LAP and P-TPEG with bentonite can promote the formation of a hydration film on the bentonite surface and inhibit the aggregation of bentonite, thus forming a dense filter cake to reduce the filtration loss …”

Section: Resultsmentioning

confidence: 99%

Nanolaponite/Comb Polymer Composite as a Rheological Modifier for Water-Based Drilling Fluids

Yang

Ren

Sun

et al. 2023

ACS Appl. Nano Mater.

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During the drilling of deep/ultradeep wells, water-based drilling fluids (WBDFs) often experience harsh conditions of ultrahigh temperature and high salt. Ultrahigh temperatures and high salts cause rheological instability in drilling fluid, reducing its suspension and cutting-carrying capacity. In this study, a comb polymer, P-TPEG with isopentenol polyoxyethylene ether (TPEG) as the side chain, was prepared via free radical polymerization in an aqueous solution and then compounded with nanolaponite (LAP) to obtain a composite rheological modifier (LAP/P-TPEG). In situ Fourier transform infrared spectroscopy and thermogravimetric analysis showed that LAP/P-TPEG had an excellent thermal stability. The LAP/P-TPEG solution test showed a shear thinning behavior. The results demonstrate that LAP/P-TPEG can improve the rheology of WBDFs before and after aging at 240 °C and can resist 15 wt % NaCl. LAP/P-TPEG formed a strong adsorption with bentonite through hydrogen bonds and electrostatic interactions. LAP, P-TPEG, and bentonite formed a “reversible” “dual” spatial network structure in WBDFs, improving the rheology and the suspension, cutting-carrying, and wellbore-cleaning abilities of the drilling fluid under ultrahigh temperature and high salt.

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Section: Resultsmentioning

confidence: 99%

Nanolaponite/Comb Polymer Composite as a Rheological Modifier for Water-Based Drilling Fluids

Yang

Ren

Sun

et al. 2023

ACS Appl. Nano Mater.

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“…Dong and coworkers [ 177 ] developed a nanocomposite filter reducer (ANDP) for drilling fluids in deep formations using a blend of 2-acrylamide-2-methylpropane sulfonic acid, acrylamide, and modified nanoLAP. ANDP demonstrates excellent resistance to high temperatures and salinity, ensuring stable drilling fluid performance.…”

Section: Laponite ® Applicationsmentioning

confidence: 99%

Laponite®—From Dispersion to Gel—Structure, Properties, and Applications

Brunchi,

Morariu

2024

Molecules

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Laponite® (LAP) is an intensively studied synthetic clay due to the versatility given by its layered structure, which makes it usable in various applications. This review describes the multifaceted properties and applications of LAP in aqueous dispersions and gel systems. The first sections of the review discuss the LAP structure and the interactions between clay discs in an aqueous medium under different conditions (such as ionic strength, pH, temperature, and the addition of polymers) in order to understand the function of clay in tailoring the properties of the designed material. Additionally, the review explores the aging phenomenon characteristic of LAP aqueous dispersions as well as the development of shake-gels by incorporating LAP. The second part shows the most recent studies on materials containing LAP with possible applicability in the drilling industry, cosmetics or care products industry, and biomedical fields. By elucidating the remarkable versatility and ease of integration of LAP into various matrices, this review underscores its significance as a key ingredient for the creation of next-generation materials with tailored functionalities.

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“…Due to the presence of hydroxyl groups on the surface of clay particles, they are negatively charged, and the Zeta potential of the drilling fluid is usually negative. Zeta potential can reflect the stability of the drilling fluid system [18,32]. The more stable the drilling fluid dispersion system is, the higher the degree of hydration of clay particles and the greater the absolute value of Zeta potential.…”

Section: Investigation Of the Mechanism Of Action Of Lmfmentioning

confidence: 99%

“…In addition, the application of nanomaterials [17] in the synthesis of filtration reducers has significantly improved the performance of drilling fluids. Dong et al [18] synthesized a nanocomposite filtration reducer ANDP using modified nano lithium soap as raw material. When the dosage is 2.0 wt%, the viscosity of the base slurry can be increased by eight times, and the filtration loss of the freshwater base mud after aging at 200 • C is 10.4 mL.…”

Section: Introductionmentioning

confidence: 99%

Development of a Low-Molecular-Weight Filtrate Reducer with High-Temperature Resistance for Drilling Fluid Gel System

Liu,

Sun,

Huang

et al. 2023

Gels

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Currently, conventional polymeric filtrate reducers with high-temperature resistance for use in drilling fluids have high molecular weights, which greatly affects the rheological properties. Therefore, to address the challenges in regulating the rheology and filtration performance of high-density drilling fluids at high temperatures, it is essential to develop low-molecular-weight filtrate reducers with high-temperature resistance. In this study, a low-molecular-weight filtrate reducer with high-temperature resistance (LMF) was prepared via free radical polymerization from acrylamide and 2-acrylamido-2-methyl-1-propanesulfonic acid as monomers, tertiary dodecyl mercaptan as a chain transfer agent, and ammonium persulfate as the initiator. LMF was then characterized by infrared spectroscopy, thermogravimetric analysis, and gel permeation chromatography. The obtained filtrate reducer exhibits a weight-average molecular weight (Mw) of 3819 and an initial thermal decomposition temperature of 300.7 °C, indicating good thermal stability. The effects of LMF dosage, temperature, and NaCl dosage on the rheology and filtration performance of mud samples were also investigated, and the mechanism of action was revealed by zeta potential, particle size distribution, scanning electron microscopy, and adsorption measurements. The results reveal that LMF increases the mud sample viscosity and reduces its filtration. For example, the filtration of the mud sample with 2 wt% LMF was 7.2 mL, a reduction of 70% compared to that of a blank mud sample. Further, after aging at 210 °C for 16 h, the filtration of the same sample was 11.6 mL, and that of a mud sample with 2 wt% LMF and 35 wt% NaCl after aging at 180 °C for 16 h was 22 mL. Overall, we have reported a scheme to prepare a low-molecular-weight filtrate reducer with high-temperature resistance and superior filtrate-reducing effects, laying the foundation for the investigation and development of low-molecular-weight filtrate reducers.

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Nano-laponite/polymer composite as filtration reducer on water-based drilling fluid and mechanism study

Cited by 22 publications

References 51 publications

Nanolaponite/Comb Polymer Composite as a Rheological Modifier for Water-Based Drilling Fluids

Nanolaponite/Comb Polymer Composite as a Rheological Modifier for Water-Based Drilling Fluids

Laponite®—From Dispersion to Gel—Structure, Properties, and Applications

Development of a Low-Molecular-Weight Filtrate Reducer with High-Temperature Resistance for Drilling Fluid Gel System

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