Synthesis and characterization of high-temperature self-crosslinking polymer latexes and their application in water-based drilling fluid

Lei, Ming; Huang, Weian; Sun, Jinsheng; Shao, Zixuan; Chen, Zhangrui; Chen, Weiqing

doi:10.1016/j.powtec.2021.05.045

Cited by 36 publications

(23 citation statements)

References 58 publications

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“…The strength and wide peak of the 170-190 ppm chemical shift were caused by the resonance of monomer (AM, AMPS-Na), which revealed that all the monomers have participated in the polymerization. The results of 13 C NMR confirmed the polymer PAD was formed by four monomers.…”

Section: C Nuclear Magnetic Resonancementioning

confidence: 63%

“…The functional groups of each monomer were revealed by Fourier transformation infrared. Moreover, 13 C nuclear magnetic resonance confirmed the PAD was synthesized by addition polymerization through these monomers. Scanning electron microscopy showed that the surface of the filter cake was smooth and dense, indicating that PAD can effectively block small pores and thus reduce filter loss.…”

mentioning

confidence: 84%

“…A Nicolet iS5 spectrometer manufactured by Thermo Fisher (USA) was used to measure the FTIR spectra of PAD. 13 C nuclear magnetic resonance (NMR) spectroscopy was performed on a Bruker-AV300 (made by Germany) system operating at 9.4 T with corresponding 13 C resonance frequencies of 100.6 MHz using a 5 mm one NMR probe under 25 C. The morphologies structure of filter cake (mud with PAD) was observed by Quanta FEG 250 (FEI Company of USA).…”

Section: Characterizationmentioning

confidence: 99%

“…To improve the stability of the polymer reducer, AMPS was used as the temperature-resistant monomer for co-copolymerization with conventional monomers such as AM, NVP to obtain the corresponding high-temperature filter reducer products. [6][7][8] Furthermore, other monomers, for instance, DIA, IA, 4VP [9][10][11][12][13] can also improve the temperature resistance of the polymer. These methods above were mainly applied in drilling fluid with clay to improve the high-temperature stability of the polymer, not for the system without any clay.…”

mentioning

confidence: 99%

“…It has good characteristics of filtration loss because of temperature and pH sensitivity. The molecular structure was confirmed by Fourier transformation infrared (FTIR), 13 C nuclear magnetic resonance (NMR), scanning electron microscope (SEM), and fluid loss tests.…”

mentioning

confidence: 99%

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Preparation and evaluation of high‐temperature filtrate reducer for solid‐free water‐based drilling fluid

Wang

Jin

et al. 2022

Polymer Engineering & Sci

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The object of this work was to improve the temperature and salt resistance of filtrate reducers used in solid‐free water‐based drilling fluids at 200°C. This copolymer (PAD) was obtained by reacting pentaerythritol triallyl ether (PTE) with acrylamide AM, N‐isopropyl acrylamide (N‐AM), methacrylic acid (MAA), and 2‐acrylamide‐2‐methylpropanesulfonic acid sodium (AMPS‐Na) in radical polymerization with potassium peroxydisulfate (KPS) and sodium bisulfite as initiators. The molar ratio of each monomer shown as follow: nAm:nN−Am:nMAA:nAmps: = 1:1.6:0.9:1.5. The functional groups of each monomer were revealed by Fourier transformation infrared. Moreover, 13C nuclear magnetic resonance confirmed the PAD was synthesized by addition polymerization through these monomers. Scanning electron microscopy showed that the surface of the filter cake was smooth and dense, indicating that PAD can effectively block small pores and thus reduce filter loss. The analysis suggested the PAD produced a “ball” structure at high temperature and salt which controlled the filtration of drilling fluid. The maximum temperature resistance boundary of PAD was 210°C. PAD maintained filtration performance in nearly saturated sodium chloride, 1.4 g/cm3 HCOOK and 1.37 g/cm3 HCOONa, at 210°C for 16 h.

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Section: C Nuclear Magnetic Resonancementioning

confidence: 63%

mentioning

confidence: 84%

Section: Characterizationmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Preparation and evaluation of high‐temperature filtrate reducer for solid‐free water‐based drilling fluid

Wang

Jin

et al. 2022

Polymer Engineering & Sci

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Synthesis and properties of deformable porous polymeric particle for oil‐based drilling fluids

Zhou

Liu

et al. 2023

J of Applied Polymer Sci

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The conventional filtration loss reducers, which help reduce the invasion into the formation, often make the rheology of the oil‐based drilling fluid difficult to control. In this paper, the new type of porous deformable polymeric particle was synthesized as filtration loss reducer (FLR), through dispersion polymerization using acrylamide and stearyl methacrylate. Fourier transform infrared spectroscopy, differential scanning calorimeter, thermogravimetric analysis, contact angle apparatus, nitrogen adsorption/desorption techniques and scanning electron microscope have been carried out to confirm the chemical structure of the FLR. The results illustrated that FLR is a hydrophobic porous solid particle with deformability. The oil‐based drilling fluid loaded with FLR retains high temperature resistance up to 180°C and the density of 2.2 g/cm3. The FLR help reduced the filtration loss to 3.2 mL, smaller than their counterparts, and synthesized FLR has small impact on the rheology of drilling fluids.

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Synthesis and characterization of a novel functionalized silica/polyacrylamide composite for advanced water‐based drilling design

Koh

Lai

Johan

et al. 2023

J of Applied Polymer Sci

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Polyacrylamide (PAM) has become a potential additive in drilling, but it has limitations in terms of viscosity, fluid loss, and bored pile stability concerns. Previous rheological studies have reported silica (SiO2) usage in PAM modification. However, there is insufficient rheological information such as plastic viscosity, apparent viscosity, yield point, and gel strength. Herein, this research investigates the effects of SiO2 in PAM with comprehensive rheological data. The morphological properties of SiO2 were analyzed. Compared with bare PAM, modified PAM demonstrated distinct chemical structures, but both were hydrophilic fluids. Moreover, an undulated trend was observed in the rheological results of all modified PAM for all concentrations of SiO2 and all the selected temperatures. However, all modified PAM showed better rheological performance than bare PAM. Consequently, 0.5 wt% SiO2 is a promising formulation for PAM modification, which can even be simulated in the performance of the bored pile drilling. For thermal stability, the rheological performance of bare PAM and modified PAM performed better at 60 and 40°C, respectively.

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Synthesis and characterization of high-temperature self-crosslinking polymer latexes and their application in water-based drilling fluid

Cited by 36 publications

References 58 publications

Preparation and evaluation of high‐temperature filtrate reducer for solid‐free water‐based drilling fluid

Preparation and evaluation of high‐temperature filtrate reducer for solid‐free water‐based drilling fluid

Synthesis and properties of deformable porous polymeric particle for oil‐based drilling fluids

Synthesis and characterization of a novel functionalized silica/polyacrylamide composite for advanced water‐based drilling design

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