Inhibitive properties comparison of different polyetheramines in water-based drilling fluid

Zhong, Hanyi; Qiu, Zhengsong; Sun, Danfeng; Zhang, Daoming; Huang, Weian

doi:10.1016/j.jngse.2015.05.029

Cited by 91 publications

(34 citation statements)

References 24 publications

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“…The water contact angle of pure Mt membrane on glass was 20.4° (Figure ), which was similar to the value of 23.8° measured on smectite film . The hydrophilic property of Mt varied owing to modification by different inhibitors.…”

Section: Resultssupporting

confidence: 79%

Improved shale hydration inhibition with combination of gelatin and KCl or EPTAC, an environmentally friendly inhibitor for water‐based drilling fluids

Jiang

Zhu

et al. 2019

J of Applied Polymer Sci

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An effective and environmentally friendly shale hydration inhibitor is essential to develop high‐performance water‐based drilling fluid with good environmental properties. For this purpose, and to minimize shale hydration under satisfactory environmental profit, composites of gelatin and inorganic salt (KCl) or organic salt (2, 3‐epoxypropyl‐trimethylammonium chloride, EPTAC) were prepared as environmentally friendly shale inhibitors to perfect the inhibitive effect. The inhibitive properties of the composites were evaluated by comparison with pure gelatin and common inhibitors. Results suggested that when 2.0 wt % gelatin and 1.0 wt % salt were combined, the composites reduced the swelling height of montmorillonite (Mt) to <1.70 mm, improved shale recovery to 80% at 150 °C and inhibited 16.0 wt % Mt mud‐making, thereby displaying excellent inhibition performance. Moreover, the gelatin composite with EPTAC seemed to perform better synergistic inhibition than that with KCl. The underlying inhibitive mechanisms were also investigated by measuring interlayer space through X‐ray diffraction, observing aggregation through electron microscopy, comparing hydrophobic modification degree by water contact angle measurement, and determining the zeta potential and water activity. The gelatin composites presented lower water activity and effectively prevented water from invading Mt. In these composites, gelatin mainly adsorbed on the surface of Mt particles, encapsulated Mt particles, and improved their hydrophobic property to a certain degree, whereas the salts entered the interlayer, expelled water, and decreased the interlayer space. Consequently, the combinations of gelatin and KCl or EPTAC had an excellent effect on inhibiting shale hydration. This study can also provide new insights into the design of totally environmentally friendly additives for water‐based drilling fluid. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47585.

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Section: Resultssupporting

confidence: 79%

Improved shale hydration inhibition with combination of gelatin and KCl or EPTAC, an environmentally friendly inhibitor for water‐based drilling fluids

Jiang

Zhu

et al. 2019

J of Applied Polymer Sci

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“…Shale formations consist of consolidated clay minerals and contain native fractures and nano-pores. This results in their ultra-low permeability (van Oort 2003;Zhang et al 2013;Zhong et al 2011) and serious clay swelling when encountering water, a main factor causing hole collapse, wellbore weakening, and stuck pipes in drilling (Zhong et al 2015). The composition of clay minerals is a major factor contributing to swelling capability as some clay minerals are non-swelling.…”

Section: Introductionmentioning

confidence: 99%

The assembly of a composite based on nano-sheet graphene oxide and montmorillonite

Weijia

et al. 2018

Pet. Sci.

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Graphene oxide (GO) nano-sheets were synthesized using a modified Hummers' method from graphite powder. The Raman spectrum of GO displayed a D-band at 1359 cm -1 and a G-band at 1594 cm -1 . The I D /I G value of GO was calculated to be 0.97, suggesting the formation of new sp 2 clusters upon reduction. A method was designed to investigate the assembly of the GO/montmorillonite (MMT) composite. After the addition of GO, the typical peaks of montmorillonite in FT-IR spectra shifted, indicating the assembly between GO and MMT. The D-band and G-band reduced sharply in the GO/MMT composite. More importantly, the D-band (1344 cm -1 ) and G-band (1574 cm -1 ) shifted significantly and the I D / I G value of the GO/MMT composite was calculated to be 1.13, showing a change in the GO structure. In the addition of 0.04 wt% GO to MMT, the value of interlayer space (d) was up to 13.0 Å measured by XRD due to the insertion of GO into MMT. The evident increases in contents of carbon atoms (26.59%) and nitrogen atoms (3.44%) indicate that GO was successfully combined with MMT. The nano-pores and clay sheets were not observed in the SEM image of GO/clay, but obvious wrinkles, while flexible sheets were observed in the typical scanning electron microscopy images of GO. This further proves that GO was combining with clay. The TEM image shows that the GO nano-sheets were tiled on the surface of MMT sheets. This observation suggests that a stable assembly structure was formed between GO sheets and MMT sheets. The change in particle size of MMT with the addition of GO shows that interaction occurred between GO sheets and MMT sheets, which was further confirmed by the results of zeta potential. Adsorption and insertion were the main mechanisms to assemble GO and MMT.

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“…It revealed that β‐CD‐HBP‐OH was not a proper inhibitor for crystalline hydration due to its larger molecular size. Although some inorganic salt inhibitors and linear polymer inhibitors were reported to decrease the interlayer spacing d 001 of wet bentonite for restricting crystalline hydration, it seemed that the molecular weight of hyperbranched polymer dominated the inhibition interaction types. Greater molecular weight meaned larger molecular size with more terminal groups.…”

Section: Resultsmentioning

confidence: 99%

“…Hence, it is essential to inhibit the hydration and dispersion of shale in the drilling process. In recent decades, literature reports that KCl, CaCl 2 , nanoparticles, ionic liquid, cellulose derivative, polyethyleneimine, polyoxyalkyleneamine, amine‐terminated polymer, polyols and nonionic molecules/polymers have been acted as inhibitors for shale hydration. Among them, amine‐terminated inhibitors are attractive due to their high performance with low dosage.…”

Section: Introductionmentioning

confidence: 99%

The Structure and Properties of a Novel Hydroxyl‐Terminated Hyperbranched Polymer for Inhibiting Shale Hydration

Wang

2019

ChemistrySelect

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To inhibit the hydration and dispersion of shale, a hydroxyl‐terminated hyperbranched polymer (β‐CD‐HBP‐OH) was synthesized by the green raw materials: β–cyclodextrin and glycerol carbonate. The chemical structure of β‐CD‐HBP‐OH was characterized by the Fourier transform infrared spectroscopy (FT‐IR), nuclear magnetic resonance spectroscopy (1H‐NMR and 13C‐NMR) and gel permeation chromatography (GPC). As an inhibitor, β‐CD‐HBP‐OH possessed smaller hydrodynamic radius with less chain entanglement, demonstrating favourable rheology properties. The dominated hyperbranched structure and terminal hydroxyl groups of β‐CD‐HBP‐OH improved the inhibition by uniform adsorption and bridging. The recovery rates of shale cuttings were higher than 50% when β‐CD‐HBP‐OH exceed 1 wt %. The Zeta potential absolute values of the base slurry were reduced from 40.9 mV to 13.4 mV by β‐CD‐HBP‐OH's adsorption. The particle size of the base slurry was also increased from 2.017 μm to 4.026 μm by bridging effect. The results of thermogravimetric analysis (TGA) suggested β‐CD‐HBP‐OH decreased the water content of bentonite from 8.04% to 0.59%. Upon scanning electron microscope (SEM) images, more assemble bentonite aggregates were observable after β‐CD‐HBP‐OH treatment. Finally, the interaction between bentonite and β‐CD‐HBP‐OH was further confirmed by the FT‐IR spectrum and the X‐ray diffraction (XRD) spectrum.

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Inhibitive properties comparison of different polyetheramines in water-based drilling fluid

Cited by 91 publications

References 24 publications

Improved shale hydration inhibition with combination of gelatin and KCl or EPTAC, an environmentally friendly inhibitor for water‐based drilling fluids

Improved shale hydration inhibition with combination of gelatin and KCl or EPTAC, an environmentally friendly inhibitor for water‐based drilling fluids

The assembly of a composite based on nano-sheet graphene oxide and montmorillonite

The Structure and Properties of a Novel Hydroxyl‐Terminated Hyperbranched Polymer for Inhibiting Shale Hydration

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