New Engineered Approach to Replace Oil-Based Drilling Fluids with High Performance Water-Based Drilling Fluids in Mediterranean Sea

Attia, Mohamad; Elsorafy, Wael; D’Angelo, Stefano

doi:10.2523/127826-ms

Cited by 7 publications

(5 citation statements)

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“…However, they are expensive and disadvantageous to the environment. Therefore, the development of high-performance WBDFs with environmentally friendly performance has attracted much interest. , Various additives have been introduced and researched. ,, As important additives for WBDFs, environmentally friendly shale inhibitors are also essential. In recent decades, various shale inhibitors or stabilizers , have been developed, such as potassium salts, nanoparticles, − polyalcohols, amine, and its derivatives, − cationic copolymers, , and some natural materials. − Besides, some shale inhibitors with low environmental footprints have been also researched, including acrylamides, glycols, biomolecules, and silicates .…”

Section: Introductionmentioning

confidence: 99%

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Poly-l-arginine as a High-Performance and Biodegradable Shale Inhibitor in Water-Based Drilling Fluids for Stabilizing Wellbore

Jiang

Shen

et al. 2020

ACS Sustainable Chem. Eng.

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The hydration and swelling of shale formations are serious problems for well drilling. The use of an efficient shale inhibitor is one of the most important methods for overcoming the wellbore instability issue. In this work, poly-L-arginine (PArg) was synthesized and used as an efficient and biodegradable shale inhibitor. This inhibitor was systematically evaluated through measuring the swelling degree of the bentonite (Bent) pellet, the rheological behavior of the Bent suspensions, and the recovery percentage of shale cuttings. The results demonstrated that 2.0 wt % PArg could reduce the swelling degree of Bent to 70.53%, improve the shale recovery percentage to 71.40% at 180 °C, and inhibit 12.0 wt % Bent mud-making. The PArg displayed a highly inhibitive performance and excellent high-temperature resistance property, better than common inorganic KCl and organic polyether diamine. The underlying inhibition mechanism was also proposed based on measuring the variation of the interlayer spacing of the Bent, observing the exterior morphologies of Bent particles, and assessing the particle size distribution and electrokinetic potential. The results indicated that the PArg displayed its inhibitive effect mainly by adsorbing onto the Bent, encapsulating the Bent particles efficiently, and decreasing the interlayer spacing in a certain degree with 0.9 Å. This study can contribute to designing highly inhibitive water-based drilling fluids containing PArg.

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Section: Introductionmentioning

confidence: 99%

“…Therefore, the development of high-performance WBDFs with environmentally friendly performance has attracted much interest. 14,15 Various additives have been introduced and researched. 9,16,17 As important additives for WBDFs, environmentally friendly shale inhibitors are also essential.…”

Section: ■ Introductionmentioning

confidence: 99%

Poly-l-arginine as a High-Performance and Biodegradable Shale Inhibitor in Water-Based Drilling Fluids for Stabilizing Wellbore

Jiang

Shen

et al. 2020

ACS Sustainable Chem. Eng.

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“…However, the use of OBM is restricted due to strict environmental regulations, high cost, disposal problems, and lower performance in the well logging process. − Therefore, WBM is widely used for the drilling of oil and gas wellbores. Around 80% of wellbore drilling is attained through WBM due to its lesser cost, easy preparation for a wellbore formation, environmental friendliness, easy recycling, and improved performance in the well logging process. − However, the active water molecules in the WBM interact with the sensitive shale formations and result in the swelling and dispersion of shale in the wellbore, which often leads to the loss of billions of dollars in the drilling process. , Therefore, several WBM additives which are used as shale swelling and dispersion inhibitors include polymers, ,− nanoparticles, − amines, − and polymer nanocomposites, − employed to reduce wellbore instability problems.…”

Section: Introductionmentioning

confidence: 99%

Influence of Hydrophobically Modified Polymer and Titania Nanoparticles on Shale Hydration and Swelling Properties

et al. 2020

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Drilling fluid additives play a vital role in modifying the drilling fluid properties for the ease of drilling operations in oil and gas wells. In this work, two different drilling fluid additives such as titanium oxide nanoparticles and a hydrophobically modified associative polymer were employed to develop several drilling fluid formulations. Various drilling fluid formulations were made by varying the concentrations of the nanoparticles and polymer to study the rheology, filtration, and shale inhibition properties. Rheological and filtration properties of the drilling fluid formulation were determined to study the performance of drilling fluid formulations. TEM analysis of drilling fluid was carried out to study the interactions and distribution of drilling fluid additives. SEM analysis of shale was performed to investigate the surface texture and distribution of additives on the shale surface. Shale inhibition characteristics were evaluated by performing hot rolling dispersion and linear swelling tests of shale. Experimental results exhibited that the addition of nanoparticles and the polymer enhanced rheological properties and reduced fluid loss. However, the synergistic effect of the nanoparticles and polymer was far more prominent on rheological and filtration properties. TEM analysis of drilling fluid formulations revealed the homogenous distribution additives in the drilling fluids. A SEM analysis of shale surfaces after the hot rolling test disclosed that nanoparticles plugged the micropores and covered the defects in the shale surface. A hot rolling dispersion test showed that the dispersion of shale was reduced by the addition of nanoparticles and the polymer in the drilling fluid formulation. The minimum dispersion and least swelling of shale were observed with the formulation containing both nanoparticles and the polymer. Therefore, based on shale inhibition results, the titania nanoparticles and associative polymer can be used as potential additives for drilling fluids.

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“…Water-based drilling fluids (WBDFs) are generally considered to replace oil-based drilling fluids (OBDFs) in the future for low-cost and environmentally acceptable advantages, and it was reported that an increasing number of WBDFs have been used for oil and gas exploitation. − However, when WBDFs with no effective inhibitor is used, wellbore instability resulting from shale hydration and dispersion always brings great harm, such as collapse, sloughing, sticking pipe, and even a significant destruction in well drilling. , Therefore, many researchers have been devoted to the development of effective inhibiting additives for high-performance WBDFs to resolve the shale hydration problem.…”

Section: Introductionmentioning

confidence: 99%

Application of Gelatin Quaternary Ammonium Salt as an Environmentally Friendly Shale Inhibitor for Water-Based Drilling Fluids

Jiang

Yang

et al. 2019

Energy Fuels

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Various water-based drilling fluids (WBDFs) are increasingly being used in oil and gas exploitation, for more environmentally acceptable and low-cost advantages than oil-based drilling fluids (OBDFs). However, WBDFs without an effective inhibitor easily facilitate shale swelling, hydration, and dispersion and even induce well instability, which is quite disadvantageous for well drilling. Thus, high-performance and environmentally friendly shale inhibitors are desperately needed for WBDFs, especially in deep and other challenging wells. Previously, gelatin was adopted as an environmentally friendly shale inhibitor in our group. However, the shale inhibition performance was limited at a high temperature. In this work, gelatin was further modified by 2,3-epoxypropyltrimethylammonium chloride (EPTAC, denoted as GT) to introduce quaternary amine functionalities and improve shale inhibition performance. The inhibitive property of GT was systematically evaluated through the linear swelling test, hot-rolling recovery test, and Na−bentonite (Na−BT) inhibition test. Results indicated that GT displayed better inhibition performance, especially at a high temperature, than pure gelatin and other common inhibitors. GT can be strongly adsorbed on the negatively charged clay surface via electrostatic attraction and hydrogen bonding, effectively decreasing the ζ potential of Na−BT particles and suppressing the double electrical layers. Meanwhile, GT effectively encapsulated and gathered the clay particles together, therefore preventing water ingress into clay and shale. GT showed great potential as a high-performance and environmentally friendly shale inhibitor for WBDFs.

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New Engineered Approach to Replace Oil-Based Drilling Fluids with High Performance Water-Based Drilling Fluids in Mediterranean Sea

Cited by 7 publications

References 0 publications

Poly-l-arginine as a High-Performance and Biodegradable Shale Inhibitor in Water-Based Drilling Fluids for Stabilizing Wellbore

Poly-l-arginine as a High-Performance and Biodegradable Shale Inhibitor in Water-Based Drilling Fluids for Stabilizing Wellbore

Influence of Hydrophobically Modified Polymer and Titania Nanoparticles on Shale Hydration and Swelling Properties

Application of Gelatin Quaternary Ammonium Salt as an Environmentally Friendly Shale Inhibitor for Water-Based Drilling Fluids

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