Water-Soluble Acrylamide Sulfonate Copolymer for Inhibiting Shale Hydration

Liu, Xiangjun; Liu, Kun; Gou, Shaohua; Liang, Lixi; Luo, Chengcheng; Guo, Qipeng

doi:10.1021/ie403956d

Cited by 49 publications

(29 citation statements)

References 24 publications

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“…36 To sum up, hydration damage is associated with external conditions and its evaluation should include these influence factors. hydration activity, thus inhibiting hydration.…”

Section: Den H Denmentioning

confidence: 99%

Hydration index and hydrated constitutive model of clay shale using acoustic frequency spectrum

Liu

Ding

Ranjith

et al. 2019

Energy Science & Engineering

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Clay shale is frequently encountered in drilling. With strong hydration capacity, when clay shale contacts with drilling fluid, rock structural and mechanical property will be affected, causing wellbore instability. Acoustic frequency spectrum is a significant parameter in geophysical logging. The influence of hydration on clay shale can be reflected in acoustic logging. Therefore, in order to identify hydration damage and have precise evaluation for hydration damage, a novel hydration damage index has been built on the basis of acoustic frequency spectrum. Meanwhile, considering the influence of hydration, hydrated constitutive model has been proposed using this new index. Results demonstrate that acoustic frequency spectrum has clear modification due to hydration damage. In the hydration evolutionary process, fracture initiation and propagation happen, decreasing acoustic amplitude and dominant frequency. The whole hydration evolutionary process exhibits S curve with clear three stages. In the initial stage, changing ranges of acoustic amplitude and frequency are small. In the middle stage, clear fracture propagation can be noticed and fracture network is formed, boosting the change of acoustic frequency spectrum. Finally, acoustic frequency spectrum becomes stable, meaning hydration damage has reached its limitation. Hydration damage degree is variable with different conditions, but the tendency still remains typical S curve. Stress‐strain curves simulated from hydrated constitutive model are in good agreement with results of uniaxial compressive test, indicating this model can be used to express shale mechanical property in hydration evolutionary process. Findings of this paper can offer theoretical reference for evaluating hydration damage and are advantageous for drilling operation in clay shale formation.

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“…36 To sum up, hydration damage is associated with external conditions and its evaluation should include these influence factors. hydration activity, thus inhibiting hydration.…”

Section: Den H Denmentioning

confidence: 99%

Hydration index and hydrated constitutive model of clay shale using acoustic frequency spectrum

Liu

Ding

Ranjith

et al. 2019

Energy Science & Engineering

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“…Bis (hexamethylene) triamine [33] • Protonation of multiple amine groups is the main inhibition mechanism. Copolymers [34][35][36] • Exhibiting excellent temperature resistance and salt-tolerance. Henna extract [37] • The first proposed plant-based clay stabilizer.…”

Section: Silicatesmentioning

confidence: 99%

A biosurfactant for inhibiting clay hydration in aqueous solutions: Applications to petroleum industry

et al. 2018

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The development of high performance and environmentally‐friendly clay stabilizers is still crucial to the drilling industry. This study aims to evaluate the impact of mulberry leaf extract (MLE), a biosurfactant as a clay stabilizer, on hydration of sodium bentonite in aqueous solutions. Several experimental techniques including sodium bentonite inhibition, sedimentation, filtration, zeta potential, particle size, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) are utilized in this study. Based on the results, MLE aqueous solution loads a larger amount of sodium bentonite in contrast to deionized water, leading to a low rheological profile. Sodium bentonite is not able to form a stable dispersion in the MLE aqueous solution. The capability of sodium bentonite to control the fluid loss is considerably lost upon exposure to the aqueous solutions of MLE. In the presence of MLE, the zeta potential of sodium bentonite dispersion shifts towards positive values, implying the instability of the water film surrounding the sodium bentonite particles. Sodium bentonite particles are larger in the MLE aqueous solution, representing a lower degree of particle delamination. A lower water content is observed in TGA for sodium bentonite modified by MLE. In SEM analysis, sodium bentonite particles show larger aggregates in the MLE aqueous solution. MLE aqueous solutions also have larger shale cuttings, in contrast to deionized water. All experiments confirm the promising features of MLE as an excellent clay stabilizer during drilling through clay rich shales. In addition to the superior performance in the drilling industry, MLE exhibits an environmentally‐friendly characteristic which is an asset for this biosurfactant.

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“…[19,20] Xu et al used the XRD instrument to determine the interplanar spacing of clay minerals and found that XRD was a feasible, fast and intuitive method to assess the anti-swelling and swelled clay shrinkage property of clay stabilizers. [12] Warr used in situ wet-cell X-ray diffraction to determine the mechanism and rate of hydration swelling during the infiltration of natural waters into pressed bentonite powders within a confined reaction volume. [21] Guo et al found that XRD can be used to intuitively and realistically evaluate the inhibition of the clay swelling.…”

Section: Xrd Testmentioning

confidence: 99%

“…[22] Liu et al used XRD measurement to evaluate shrinkage property of copolymer PANAA on the swelled clay. [12] The interplanar spacing of Na-MMT of clay samples in different solutions was investigated by X-ray diffractometer. As can be seen from Fig.…”

Section: Xrd Testmentioning

confidence: 99%

“…Choosing a suitable clay stabilizer in the process of filtering water is a common method to solve the reservoir damages caused by water sensitivity. [8,11,12] Research of clay stabilizers can be divided into three phases. [13] While the 1950s and 1960s were primary inorganic salts to stabilize clay, the 1970s was mainly inorganic multicore and cationic surfactants, and the research of organic cationic polymer was carried out since the 1980s.…”

Section: Introductionmentioning

confidence: 99%

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The swelled clay shrinkage property and inhibition of microcosmic migration in pores of quaternary ammonium salt cationic polymer

Zhang

Yang

Qin

et al. 2015

Polymers for Advanced Techs

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In the low permeability and high water-sensitive reservoir, water injection may induce the clay minerals hydration swelling and dispersing migration, which are the main factors for formation damages. Sodium montmorillonite, which is easier to hydrate in water than other clay minerals, is usually used to analyze the hydration of clays. A quaternary ammonium salt cationic polymer was synthesized and used as a clay stabilizer. The stability of sodium montmorillonite by interaction with the quaternary ammonium salt cationic polymer was studied, and the swelled clay shrinkage property of the quaternary ammonium salt cationic polymer was also analyzed and assessed by using the XRD, ESEM and visual micro-lithography model from microcosmic points. The results show that the interplanar spacing of hydration swelling sodium montmorillonite observed by XRD decreased as the quaternary ammonium salt cationic polymer infiltrated into the clay and replaced exchangeable cations. ESEM observations show that the sodium montmorillonites were wrapped by quaternary ammonium salt cationic polymer because of the network structure, which could make the size of the hydration swelling sodium montmorillonites smaller. The visual microlithography models confirmed that the clays were wrapped by the quaternary ammonium salt cationic polymer. The hydration swelling and dispersing migration were thus inhibited. Considering the experimental results, this quaternary ammonium salt cationic polymer can play a significant effect on the inhibition of clay hydration swelling and dispersing migration.

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Water-Soluble Acrylamide Sulfonate Copolymer for Inhibiting Shale Hydration

Cited by 49 publications

References 24 publications

Hydration index and hydrated constitutive model of clay shale using acoustic frequency spectrum

Hydration index and hydrated constitutive model of clay shale using acoustic frequency spectrum

A biosurfactant for inhibiting clay hydration in aqueous solutions: Applications to petroleum industry

The swelled clay shrinkage property and inhibition of microcosmic migration in pores of quaternary ammonium salt cationic polymer

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