Experimental Study of Nanoclay Absorbents and Additives’ Effects on Modification of Rheological Properties of Drilling Fluids in Porous Media Using Glass Micromodel

Kafashi, Sahar; Rasaei, Mohammad Reza; Karimi, Gholam Reza

doi:10.1615/jpormedia.2020025759

Cited by 6 publications

(8 citation statements)

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“…Operating fluids (drilling and acidizing fluids) contain a large number of additives with high density and high salinity. e drilling fluid pH is as high as strong alkaline solutions and for acidizing fluids is very low [4,[43][44][45]. e formation water samples of the aquifer indicate that its salinity and density is between the value for condensed water and operating fluids [42].…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

Water Production Problem in Gas Reservoirs: Concepts, Challenges, and Practical Solutions

Roozshenas

Hematpur²,

Abdollahi³

et al. 2021

Mathematical Problems in Engineering

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Gas resources play a key role in nowadays energy supply and provide 24% of the diverse energy portfolio. Water encroachment is one of the main trapping mechanisms in gas reservoirs. It decreases recovery by reduction of reservoir life, limits productivity and efficiency of wells, and elevates safety risks in gas production. The lack of a comprehensive study about water production problems is the primary motivation for this study. Contrary to the serious concern over the standalone investigation of an actual water production case study, less concern is put to deal with the problem comprehensively through an investigation of all potential sources and mechanisms, required methods, and available techniques. This study presents the potential sources of the problem, methods to identify it, and approaches to address it. Firstly, possible sources are described. Secondly, the diagnostic techniques are expressed. Then, practical solutions used in actual cases to overcome problems are elaborated. The solutions include both well- and reservoir-oriented approaches. Finally, all proper strategies are summarized to tackle the water problems in gas fields. The current study comprehensively presents the available methods for water control problems in parallel with conceptual and qualitative comparison. The finding of this study can be very constructive for better understanding of water sources, available diagnostic tools, and solutions for controlling water production in gas reservoirs and, consequently, taking the best decision in real case studies before attempting many water shut-off approaches.

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Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

Water Production Problem in Gas Reservoirs: Concepts, Challenges, and Practical Solutions

Roozshenas

Hematpur²,

Abdollahi³

et al. 2021

Mathematical Problems in Engineering

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“…The investigations result showed that nanoparticles can be used as suitable additives to improve drilling fluid properties 20 – 22 . The unique mechanical, hydrodynamic, thermal, electrical, chemical properties, and interaction potential of nanoparticles make them an excellent choice for drilling fluid applications 22 – 24 .…”

Section: Introductionmentioning

confidence: 99%

Formulating a novel drilling mud using bio-polymers, nanoparticles, and SDS and investigating its rheological behavior, interfacial tension, and formation damage

Taghdimi¹,

Kaffashi²,

Rasaei³

et al. 2023

Sci Rep

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Formation damage is a well-known problem that occurs during the exploration and production phases of the upstream sector of the oil and gas industry. This study aimed to develop a new drilling mud formulation by utilizing eco-friendly bio-polymers, specifically Carboxymethyl Cellulose (CMC), along with nanostructured materials and a common surfactant, sodium dodecyl sulfate (SDS). The rheological properties of the drilling fluid and the impact of additives on its properties were investigated at the micromodel scale, using a flow rate of 20 mL/h. The polymer concentration and nano clay concentration were set at two levels: 0.5 wt% and 1 wt%, respectively, while the surfactant content was varied at three levels: 0.1 wt%, 0.4 wt%, and 0.8 wt%. The results of the interfacial tension (IFT) analysis demonstrated a significant decrease in the interfacial tension between oil and water with the increasing concentration of SDS. Furthermore, following the API standard, the rheological behavior of the drilling fluid, including the gel strength and thixotropic properties of the mud, was evaluated with respect to temperature changes, as this is crucial for ensuring the inherent rheological stability of the mud. The rheological analysis indicated that the viscosity of the mud formulation with nanoparticles experienced a reduction of up to 10 times with increasing shear rate, while other formulations exhibited a decline of 100 times. Notably, the rheological properties of the Agar specimen improved at 150 °F due to its complete solubility in water, whereas other formulations exhibited a greater drop in viscosity at this temperature. As the temperature increased, drilling fluid containing nanostructured materials exhibited higher viscosity.

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“…Moreover, the variation of wettability have a huge impact on the capillary pressure, irreducible water saturation and residual oil saturation (Anderson 1985;A Davarpanah 2018;A Davarpanah and Mirshekari 2019a, 2019b, 2019cHan et al 2019;Xiao Hu et al 2020;Jadhunandan and Morrow 1995). It has been proved that the most of the carbonate reservoirs act as oil-wet due to the interaction of components crude oil and the kind of this rock (Afshin Davarpanah 2020; Afshin Davarpanah et al 2018;Geyssant 2019;Hirasaki and Zhang 2004;Xiaoyong Hu et al 2020;Jarrahian et al 2012;Kafashi et al 2020;Zhou and Davarpanah 2020). The composition of rock minerals plays a significant role in the adsorption of added surfactants, reservoirs and their influences on wettability (Hamid Giraldo et al 2013;Pan et al 2020;Somasundaran and Zhang 2006).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous evaluation of capillary pressure and wettability alteration based on the USBM and imbibition tests on carbonate minerals

Esfandyari

Hoseini

Shadizadeh

et al. 2021

Journal of Petroleum Science and Engineering

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Experimental Study of Nanoclay Absorbents and Additives’ Effects on Modification of Rheological Properties of Drilling Fluids in Porous Media Using Glass Micromodel

Cited by 6 publications

References 0 publications

Water Production Problem in Gas Reservoirs: Concepts, Challenges, and Practical Solutions

Water Production Problem in Gas Reservoirs: Concepts, Challenges, and Practical Solutions

Formulating a novel drilling mud using bio-polymers, nanoparticles, and SDS and investigating its rheological behavior, interfacial tension, and formation damage

Simultaneous evaluation of capillary pressure and wettability alteration based on the USBM and imbibition tests on carbonate minerals

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