Inhibiting shale hydration and dispersion with amine-terminated polyamidoamine dendrimers

Zhong, Hanyi; Qiu, Zhengsong; Zhang, Daoming; Tang, Zhichuan; Huang, Weian; Wang, Weiji

doi:10.1016/j.jngse.2015.11.029

Cited by 76 publications

(31 citation statements)

References 34 publications

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“…After hot rolling for 16 h, the solution containing shale samples were screened with a 40-mesh sieve. The remaining shale samples were dried at 105 • C for 4 h, and then weighed, and the recovery rate was determined [14,16].…”

Section: Shale Inhibition Performancementioning

confidence: 99%

“…Owing to the development of a novel hydration inhibitor along with the use of encapsulator, the novel WBDF can achieve comparable shale inhibition to SBDF. Generally, the encapsulators for WBDF were the high-molecular-weight amide polymers, such as PHPA, polyacrylamide (PAM), and particular zwitterionic polymer [3,[14][15][16][17][18][19]. They can form multi-point adsorption on the surface of clay particles on the wellbore by hydrogen bonding interaction of -CONH 2 and other adsorption groups, and bridge the surrounding clay particles together and wrap them, thus preventing the dispersion and exfoliation of clay particles [13].…”

Section: Introductionmentioning

confidence: 99%

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Zwitterionic Polymer P(AM-DMC-AMPS) as a Low-Molecular-Weight Encapsulator in Deepwater Drilling Fluid

et al. 2017

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Featured Application: This work aims to simultaneously realize good encapsulation performance and low-temperature rheological property for deepwater drilling fluid. It is expected to be used in deepwater oil and gas drilling operations. Abstract:In deepwater oil and gas drilling, the high-molecular-weight encapsulator aggravates the thickening of the drilling fluid at low temperatures. Therefore, it is hard to manage the downhole pressure, and drilling fluid loss occurs. In this paper, a zwitterionic polymer P(AM-DMC-AMPS) which was the terpolymer of acrylamide, methacrylatoethyl trimethyl ammonium chloride, and 2-acrylamido-2-methylpropane sulfonic acid, was developed as a low-molecular-weight encapsulator. It was characterized by Fourier transform infrared spectrum analysis, nuclear magnetic resonance, and gel permeation chromatography. Moreover, the low-temperature rheology, shale inhibition and filtration properties of water-based drilling fluids (WBDFs) containing different encapsulators were experimentally investigated and compared. The results showed that the molecular weight of P(AM-DMC-AMPS) was about 260,000, much lower than that of the conventional encapsulators. In the deepwater drilling temperature range 4-75 • C, WBDF containing P(AM-DMC-AMPS) had lower and more stable rheological property because of its short molecular chains. The high shale recovery rate and low swelling rate indicated its strong shale inhibition performance, owing to its adsorption on the clay surface and the wrapping effect through both hydrogen bonding and electrostatic interaction. It also improved the filtration property of WBDF, and was compatible with other WBDF components. This product is expected to simultaneously realize the good encapsulation performance and low-temperature rheological property for deepwater drilling fluid.

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Section: Shale Inhibition Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zwitterionic Polymer P(AM-DMC-AMPS) as a Low-Molecular-Weight Encapsulator in Deepwater Drilling Fluid

et al. 2017

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“…Mass of 8 g sodium bentonite was dispersed in 400 mL deionized water and stirred for at least 24 h, and then shale inhibitors ranging from 0.20 to 8.00 g were added into the dispersion and stirred for another 24 h as reported previously [22]; then, the mixture was centrifuged at 8000 r min -1 for 20 min and washed three times to remove the un-adsorbed polymers. After centrifugation, the sedimentation was collected.…”

Section: Measuring Interlayer Spacing With X-ray Diffraction (Xrd) Anmentioning

confidence: 99%

Study of 4, 4′-methylenebis-cyclohexanamine as a high temperature-resistant shale inhibitor

et al. 2016

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In order to develop high-performance water-based drilling fluid with the aim of meeting the increasing requirement of drilling industry, highly inhibitive and high-temperature-resistant shale inhibitors are essential. In this study, 4, 4 0 -methylenebis-cyclohexanamine was introduced as a potential shale inhibitor. The inhibitive properties of the amine compound in comparison with currently available polyether diamine inhibitor were evaluated using bentonite inhibition test, shale cuttings hot-rolling dispersion test, linear swelling test, and pressure transmission test. The inhibitive mechanism was investigated with zeta potential measurement, X-ray diffraction analysis, and contact angle measurement. The results indicated that 4, 4 0 -methylenebis-cyclohexanamine can inhibit shale hydration and dispersion effectively, and prevent pressure transmission to a certain extent, performing better than that of polyether diamine. Furthermore, the new diamine provides reliable thermal stability as high as 220°C, preserving the benefits of high-temperature wells application. This novel diamine inhibits shale hydration and dispersion with the combination of chemical inhibition and physical plugging. The intercalation into the interlayer of clay with monolayer collapses the hydrated clay structure and expels the water molecules. After adsorption, clay surface became more hydrophobic, which prevents the imbibition of water. The variation of solubility separates the compound from the solution, which can plug the micro-pores of shale and prevent fluid invasion.

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“…Water-shale interactions may result in shale swelling and dispersion. 30,31 Hence, improving the shale hydration inhibition of WDFs is also the goal of researchers. Consequently, hunting for a novel high-performance shale stabilizer in combination with achieving plugging and hydration inhibition properties is a more valuable research issue.…”

Section: Introductionmentioning

confidence: 99%

A polymer microsphere emulsion as a high-performance shale stabilizer for water-based drilling fluids

Qiu

Zhao

et al. 2018

RSC Adv.

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Interest in using nanomaterials to improve shale stability during drilling operations has been increasing.Herein, a polymer microsphere emulsion (PME) as a high-performance shale stabilizer for water-based drilling fluids (WDFs) was prepared via emulsion polymerization. The particle sizes in PME in aqueous solution ranged from 90 to 320 nm. PME was found to exhibit excellent salt tolerance and temperature resistance. The plugging performance of PME was tested through pressure transmission tests. The results indicated that the polymer microspheres in PME could effectively plug shale pores and reduce shale permeability. In addition, rolling recovery tests were used to evaluate the shale hydration inhibition performance of PME. It was found that PME showed great performance for decreasing shale hydration potential. These factors make PME a promising shale stabilizer for WDFs used to drill shale formations.

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Inhibiting shale hydration and dispersion with amine-terminated polyamidoamine dendrimers

Cited by 76 publications

References 34 publications

Zwitterionic Polymer P(AM-DMC-AMPS) as a Low-Molecular-Weight Encapsulator in Deepwater Drilling Fluid

Zwitterionic Polymer P(AM-DMC-AMPS) as a Low-Molecular-Weight Encapsulator in Deepwater Drilling Fluid

Study of 4, 4′-methylenebis-cyclohexanamine as a high temperature-resistant shale inhibitor

A polymer microsphere emulsion as a high-performance shale stabilizer for water-based drilling fluids

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