An amphoteric polymer as a shale borehole stabilizer in water-based drilling fluids

Zhang, Xianmin; Jiang, Guancheng; Dong, Tengfei; Wang, Le; Li, Xinliang; Wang, Guoshuai

doi:10.1016/j.petrol.2018.06.051

Cited by 33 publications

(19 citation statements)

References 25 publications

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“…Therefore, SMA/SiO2 was able to reduce the tendency of shale dispersion and exhibited strong hydration inhibition. The results can be explained by the shale hydration inhibition mechanism of amphiphilic polymer [41]. The hydrophilic segments in SMA/SiO2 were capable of enhancing the adsorption between SMA/SiO2 and the shale, because shale is hydrophilic.…”

Section: Rolling Dispersion Experimentsmentioning

confidence: 91%

“…The shale samples used in this work were provided by Turpan Hami Basin, China and the X-ray diffraction analysis results were shown in Table 1. able to inhibit shale hydration [41]. The combination of amphiphilic polymer and silica nanoparticles may have the advantages of both physical plugging and chemical inhibition.…”

Section: Methodsmentioning

confidence: 99%

“…Since shales mainly consist of clay minerals, shale hydration becomes another important factor causing borehole instability that cannot be ignored [38][39][40]. Amphiphilic polymer has been reported to be able to inhibit shale hydration [41]. The combination of amphiphilic polymer and silica nanoparticles may have the advantages of both physical plugging and chemical inhibition.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Amphiphilic Polymer/Nano-Silica Composite on Shale Stability for Water-Based Muds

Qiu

Yang

et al. 2018

Applied Sciences

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Research on using nanotechnology to solve shale instability problems in drilling engineering has been increasing. The combination of amphiphilic polymer and silica nanoparticles may be a new way to improve shale stability. Herein, an amphiphilic polymer/nano-silica composite (poly(styrene-methyl methacrylate-acrylamide)/nano-SiO2) was introduced as a novel shale stabilizer SMA/SiO2 for water-based muds, which possessed the advantages of both physical plugging and chemical inhibition during the drilling operations. The SMA/SiO2 was prepared and characterized by Fourier transform infrared spectra (FT-IR), nuclear magnetic resonance (1H-NMR), transmission electron microscope (TEM), particle size distribution (PSD) and thermogravimetric analysis (TGA) experiments, which confirmed that SMA/SiO2 was regularly spherical with nano-scale and showed good high-temperature resistance. To evaluate the plugging capacity of SMA/SiO2, the pressure transmission test and BET analysis were applied. The results indicated SMA/SiO2 was capable of effectively plugging the pores and fractures in shale. To evaluate the hydration inhibition capacity of SMA/SiO2, the rolling dispersion experiment and contact angle test were adopted. The results demonstrated that SMA/SiO2 could reduce the tendency of shale hydration, which was better than potassium chloride (KCl) and polymeric alcohol (JHC). In addition, SMA/SiO2 only created slight variations on the rheological parameters of the water-based muds (WBMs) and showed a significant filtration control performance. Due to the outstanding performance of physical plugging and chemical inhibition, SMA/SiO2 was expected to be a novel shale stabilizer to solve shale instability problems.

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Section: Rolling Dispersion Experimentsmentioning

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Amphiphilic Polymer/Nano-Silica Composite on Shale Stability for Water-Based Muds

Qiu

Yang

et al. 2018

Applied Sciences

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“…Some research studied the effect of other inorganic nanoparticles on the wellbore stabilizing performance of drilling fluid such as nano grapheme (Taha and Lee, 2015), nano TiO 2 (Cheraghian et al, 2014), and nano MgO (Alssafar and Al-Mahdawi, 2019). Nano polymers (Xu et al, 2017(Xu et al, , 2018Zhang et al, 2018) having good flexibility could plug irregular shale pores by transformation and have strong interaction with shale matrix. Polymer/inorganic nano composites (Wu et al, 2016;Huang et al, 2018b;Qiu et al, 2018) combining the advantages of polymeric and inorganic plugging agents are another research hotspot.…”

Section: Introductionmentioning

confidence: 99%

The Synthesis of Polymeric Nanospheres and the Application as High-Temperature Nano-Plugging Agent in Water Based Drilling Fluid

Li¹,

Lv²,

Huang³

et al. 2020

Front. Chem.

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Nanoscale plugging agent is essential to wellbore stability of troublesome shale formation in the drilling of oil and gas wells. In this paper, polymeric nanospheres (PNS) with a double cross-linked structure were synthesized using monomers of styrene (ST), acrylamide (AM), 2-Acrylamide-2-methylpropanesulfonic acid (AMPS), and dimethyl diallyl ammonium chloride (DMDAAC). PNS were characterized by FTIR, SEM and TGA. The plugging performance of PNS was analyzed using nitrogen adsorption experiments and SEM. And compatibility with water based drilling fluid (WBM) was studied. Experimental results showed that PNS had a mean particle size of 133 nm, and could retain about half of the original size after high temperature treatment under 150-200 • C. TGA showed that the initial decomposition temperature of PNS is around 315 • C. After plugging by PNS, both the specific surface area and pore volume of the shale cuttings decreased substantially compared with those of shale samples treated with water. Thus, PNS was thermal stable in WBM under high temperature and could effectively plug shale pores. Besides, PNS was beneficial to reduce both API and HTHP fluid loss of WBM.

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“…erefore, prevention and control of gas disasters is particularly significant. Many scholars have conducted a large amount of research in this area [3][4][5][6]. Some studies focused on sealing materials [7][8][9], while others concentrated on the sealing process [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Sealing Performance of New Solidified Materials: Mechanical Properties and Stress Sensitivity Characterization of Pores

Zhang

Jin

Liu

et al. 2020

Advances in Polymer Technology

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Borehole-sealing solidified material plays a significant role in improving sealing quality and enhancing gas drainage performance. In this study, the MTS815 electro-hydraulic triaxial servo test system and MR-60 NMR test system were adopted to conduct triaxial compression control experiment on the coal sample material, concrete material, and new solidified sealing material, respectively. This paper aims to analyze the difference of support effects, porosity, and stress sensitivity between those materials. Experimental results show that under the same stress condition, the stiffness of traditional concrete solidified material is the largest, while the new solidified material is the second, and the coal sample material is the smallest. Compared with the traditional concrete solidified material, the new solidified sealing material has better strain-bearing capacity and volumetric expansion capacity under each confining pressure in the experiment. The axial strain and volume increment of new solidified material is higher than those of the traditional concrete solidified material at the peak stress. Meanwhile, the confining pressure has a certain hysteresis effect on the postpeak stress attenuation. Fracture has the strongest stress sensitivity in three pore types, and its T2 map relaxation area has a larger compression than adsorption pore and seepage pore under the same pressure. The relative content of seepage pore and fracture in the new solidified material is less than that of coal and concrete samples, and the stress sensitivity of the new solidified materials is weaker than that of coal and concrete materials, thence, new solidified material will have better performance in borehole sealing. Outcomes of this study could provide guidance on the selection of the most effective sealing materials for sealing-quality improvement.

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An amphoteric polymer as a shale borehole stabilizer in water-based drilling fluids

Cited by 33 publications

References 25 publications

Effect of Amphiphilic Polymer/Nano-Silica Composite on Shale Stability for Water-Based Muds

Effect of Amphiphilic Polymer/Nano-Silica Composite on Shale Stability for Water-Based Muds

The Synthesis of Polymeric Nanospheres and the Application as High-Temperature Nano-Plugging Agent in Water Based Drilling Fluid

Sealing Performance of New Solidified Materials: Mechanical Properties and Stress Sensitivity Characterization of Pores

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