Notoginsenoside as an environmentally friendly shale inhibitor in water-based drilling fluid

Sun, Jinsheng; Wang, Zonglun; Liu, Jingping; Lv, Kaihe; Zhang, Fan; Shao, Zihua; Dong, Xiaodong; Dai, Zhiwen; Zhang, Xianfa

doi:10.1016/j.petsci.2021.11.017

Cited by 29 publications

(14 citation statements)

References 63 publications

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“…Typically, crystalline swelling can increase the interlayer space from 9 to 20 Å. Osmotic swelling can result in a further increase of 20 to 130 Å. , During the drilling process, the clay minerals in shale immediately adsorb water from water-based drilling fluids (WBDFs) and swell. The swelling of clays will in turn cause serious problems endangering the stability of the wellbore. − The most frequently encountered problems are (a) drilling fluid leakage in fragile areas that are poorly consolidated, (b) blocking of the drilling tool with a decrease in penetration rate, (c) contamination of the drilling fluid by clays, which disperse in the latter, leading to an increase in drilling fluid viscosity, (d) wellbore collapse, and (e) exorbitant drilling costs. The swelling of clays is therefore seen as a crucial problem that requires effective solutions.…”

Section: Introductionmentioning

confidence: 99%

“…The swelling of clays will in turn cause serious problems endangering the stability of the wellbore. 8 − 10 The most frequently encountered problems are (a) drilling fluid leakage in fragile areas that are poorly consolidated, (b) blocking of the drilling tool with a decrease in penetration rate, (c) contamination of the drilling fluid by clays, which disperse in the latter, leading to an increase in drilling fluid viscosity, (d) wellbore collapse, and (e) exorbitant drilling costs. The swelling of clays is therefore seen as a crucial problem that requires effective solutions.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Alkylation Chain Length on Inhibiting Performance of Soluble Ionic Liquids in Water-Based Drilling Fluids

et al. 2023

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This work investigated the effect of the alkyl chain length of soluble methylimidazolium bromide ionic liquids (ILs) on their inhibition performance. The IL with a shorter alkyl chain length showed superior inhibition performance by suppressing clay swelling, mitigating clay dispersion, at room temperature. Particularly, the IL with an alkyl chain length of two (EmBr) reduced the sodium bentonite (Na-BT) swelling degree to 89% and achieved a cutting recovery of 81.9% after being rolled at room temperature, performing the best among all ILs. To systematically analyze the inhibition mechanism of ILs, X-ray diffraction (XRD), ζ potential, and particle size distribution have been carried out. The results revealed that the methylimidazolium with shorter alkyl chain length had better ability to enter the interlayer void by ion exchange and decrease interlayer distance, suppress the electrical double layer of the Na-BT particles and decrease the ζ potential, and promote the aggregation of Na-BT in water. It is also observed that high hot rolling temperature reduced the shale inhibiting performance of all ILs, and ILs with longer alkyl chain length had better ability to prevent cutting disintegration at high temperature. It is attributed to the variation of the hydrophilic characteristic of Na-BT at high temperature where EmBr no longer adsorbed the most on the surface and entered the interlayer voids of Na-BT. This study can be used as a reference to systematically explore the effect of the structure of shale inhibitors on their inhibiting performance and develop effective shale inhibitors.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Alkylation Chain Length on Inhibiting Performance of Soluble Ionic Liquids in Water-Based Drilling Fluids

et al. 2023

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“…In recent decades, inorganic salts, polymers, polyamines, plant extracts and nanocomposites have been developed as inhibitors. Although these inhibitors have been applied, there are also some disadvantages such as high cost, complex production and poor inhibition effect [15][16][17][18][19][20][21][22][23][24]. In this paper, an amphoteric polymer was developed as a new high-efficiency shale inhibitor and revealed its inhibition mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…This amphiphilic polymer can effectively adsorb on the shale surface and change the wettability of the shale surface to effectively 10 g of bentonite was compressed into cores at 10 MPa. The cores were immersed in deionized water and 3 wt% KCl, 1 wt% PA and ADL with different concentrations for 24 hours at room temperature to measure the swelling [24]. Take 50g of shale rock chips with 6 to 10 mesh sieve and add 350ml of inhibitor solution.…”

Section: Introductionmentioning

confidence: 99%

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An amphiphilic polymer as shale inhibitor in water-based drilling fluid

Wang

Sun

Zhang

et al. 2022

J. Phys.: Conf. Ser.

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Shale hydration inhibitor in water-based drilling fluids (WBDFs) is the key to solve the problem of shale wellbore instability during drilling. In this study, a new amphoteric polymer was studied as a shale inhibitor. The amphiphilic copolymer ADL was synthesized by using acrylamide (AM), diallyl dimethyl ammonium chloride (DMDAAC) and dodecyl acrylate (LA) as monomers, benzoyl peroxide as initiator and hexadecyl trimethyl ammonium bromide (CTAB) as an emulsifier in aqueous solution. Infrared spectra indicated that the target product was synthesized successfully. TGA showed that the copolymers had good temperature resistance and the decomposition temperature was 240°C. The performance of ADL was evaluated by linear expansion experiment, rolling recovery rate experiment. The inhibition mechanism of the ADL was analyzed by particle size distribution experiment, zeta potential experiment and contact angle experiment. The experimental results show that ADL can adsorb on the surface of shale to change its wettability and increase the repulsive force between shale particles, thus inhibiting the hydration of shale. Because of its excellent shale inhibition performance, ADL has a potential application prospect as a shale inhibitor in WBDF.

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Laboratory investigation on inhibition of polyvinyl alcohol used for wireline coring drilling

Huang,

Zheng,

Zhang

et al. 2024

J Petrol Explor Prod Technol

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To address the problems of wall collapse, cuttings slurrying, and scaling on the inner wall of the drill pipe, which often occur in small-diameter diamond wireline core drilling, the inhibition properties of polyvinyl alcohol (PVA) was investigated, and the formulation of solids-free drilling fluid with PVA as the inhibitor were completed. PVA has the advantages of fast adsorption and easy regulation of rheological properties Firstly the inhibition effect of PVA was compared with that of common inorganic salts (sodium chloride, NaCl, potassium chloride, KCl) by bentonite dispersion test, linear swelling test, shale rolling recovery test and mud ball immersion test in this study. Then, the inhibition mechanism of PVA was analyzed with potentiometric particle size tests, Fourier transform infrared (FT-IR) and X-ray Diffraction (XRD) measurements. Based on the outstanding inhibition performance of PVA, tackifiers and filtration reducers were preferred through the compatibility test. And finally, the effects of various contaminants on the comprehensive performance of the formulated solids-free drilling fluids were evaluated. The results showed that PVA exhibited better inhibition of clay hydration and dispersion in shale recovery and linear swelling compared to NaCl and KCl, which was particularly evident in the mud ball immersion test. FT-IR and XRD tests revealed that the inorganic salts were used to replace the cations with larger radius and high degree of hydration in the clay layer by ion exchange ti achieve the effect of clay de-watering by reducing the spacing of the clay interlayer and the electrostatic repulsion between the particles. However, PVA is strongly adsorbed on the clay surface in the form of hydrogen bonds due to its unique multi-hydroxyl chain structure, forming a hydrophobic barrier to prevent water molecules from entering the clay layer, thus inhibiting the hydration and swelling of the clay. Using PVA as an inhibitor, compounded with xanthan gum, sulfonated lignite resin and sulfonated gilsonite (FT-1), the solids-free drilling fluid is promising for use in diamond wireline core drilling in complex formations.

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Notoginsenoside as an environmentally friendly shale inhibitor in water-based drilling fluid

Cited by 29 publications

References 63 publications

Effect of Alkylation Chain Length on Inhibiting Performance of Soluble Ionic Liquids in Water-Based Drilling Fluids

Effect of Alkylation Chain Length on Inhibiting Performance of Soluble Ionic Liquids in Water-Based Drilling Fluids

An amphiphilic polymer as shale inhibitor in water-based drilling fluid

Laboratory investigation on inhibition of polyvinyl alcohol used for wireline coring drilling

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