Shale hydration is the main reason causing wellbore instability in oil and gas drilling operations. In this study, nanoscale laponite as a shale inhibitor was employed to stabilize wellbores. The inhibition property of laponite suspensions was evaluated by an immersion experiment, linear swelling measurement, and a shale recovery test. Then the shale inhibition mechanism was studied by using capillary suction time (CST) measurement, a thixotropy study, plugging performance evaluation, and related theoretical analysis. Evaluation experiment results showed that laponite had a better inhibition property than widely used inhibitors of potassium chloride (KCl) and poly(ester amine) (PA). The mechanism study revealed that integration of several factors strengthened the inhibition property of laponite suspensions. Laponite nanoparticles could plug interlayer spaces of clays by electrostatic interaction to reduce water invasion; the “house of cards” structure of laponite suspensions enables large CST values and l...

Nanoscale Laponite as a Potential Shale Inhibitor in Water-Based Drilling Fluid for Stabilization of Wellbore Stability and Mechanism Study.

https://www.econstor.eu/bitstream/10419/243670/1/1683610210.pdf

Advances in functionalized Nanoparticles based drilling inhibitors for oil production

Nanoparticles (NPs) as a nanotechnologies unit have a huge potential for improving drilling fluids. However, the role of NPs in this field is still in its infancy and consequently has attracted much more attention in the last years. This review is going to investigate the drilling fluids modified by nanoparticles. Moreover, effects of various nanoparticles include polymeric, ceramic, metal and carbon-based NPs on drilling fluid and technical and economic benefits of them will be inspected. Although various reviews of nano-based drilling fluids have been reported, few papers have provided a comprehensive review and development of nanoparticles application in this issue. This review summarizes the recent research advances in the synthesis and applications of NPs in drilling fluids system. The roles of NPs in rheology and fluid loss control, mud cake thickness, filtration properties, and thermal properties are discussed. Accordingly, various literature reviews demonstrated that use of nano materials in drilling fluid has two main goals: improvement of thermal and physical-mechanical of drilling fluids. The studies in this issue will facilitate the design of advanced functional nano-composites for drilling fluids.

Nanoparticles in drilling fluid: A review of the state-of-the-art

The world’s energy demand is steadily increasing where it has now become difficult for conventional hydrocarbon reservoir to meet levels of demand Therefore, oil and gas companies are seeking novel ways to exploit and unlock the potential of unconventional resources These resources include tight gas reservoirs, tight sandstone oil, oil and gas shales reservoirs, and high pressure high temperature (HPHT) wells Drilling of HPHT wells and shale reservoirs has become more widespread in the global petroleum and natural gas industry There is a current need to extend robust techniques beyond costly drilling and completion jobs, with the potential for exponential expansion Drilling fluids and their additives are being customized in order to cater for HPHT well drilling issues Certain conventional additives, eg, filtrate loss additives, viscosifier additives, shale inhibitor, and shale stabilizer additives are not suitable in the HPHT environment, where they are consequently inappropriate for shale drilling A better understanding of the selection of drilling fluids and additives for hydrocarbon water-sensitive reservoirs within HPHT environments can be achieved by identifying the challenges in conventional drilling fluids technology and their replacement with eco-friendly, cheaper, and multi-functional valuable products In this regard, several laboratory-scale literatures have reported that nanomaterial has improved the properties of drilling fluids in the HPHT environment This review critically evaluates nanomaterial utilization for improvement of rheological properties, filtrate loss, viscosity, and clay- and shale-inhibition at increasing temperature and pressures during the exploitation of hydrocarbons The performance and potential of nanomaterials, which influence the nature of drilling fluid and its multi-benefits, is rarely reviewed in technical literature of water-based drilling fluid systems Moreover, this review presented case studies of two HPHT fields and one HPHT basin, and compared their drilling fluid program for optimum selection of drilling fluid in HPHT environment

/pdf/nanomaterial-based-drilling-fluids-for-exploitation-of-5fsnm5o3ny.pdf

Nanomaterial-based drilling fluids for exploitation of unconventional reservoirs: A review

A review on clay chemistry, characterization and shale inhibitors for water-based drilling fluids

Magnesium aluminum silicate nanoparticles as a high-performance rheological modifier in water-based drilling fluids

In recent years, shale gas has been an important fossil fuel. However, drilling in porous and water-sensitive shale using water-based drilling fluids (WBDs) can cause various problems, such as cuttings sedimentation, water penetration into the shale and drill pipe sticking. To solve these problems, this study demonstrated a two-dimensional nano-material (Laponite) as a multi-functional additive in WBDs for rheological control, nano-crack plugging and decreased drill pipe sticking. First, during rheological testing, the 2% Laponite suspension maintained good shear-thinning behavior in the elastic modulus (G′) and apparent viscosity after hot rolling at 150 °C compared with 6% sodium bentonite (Na-BT). Additionally, transmission electron microscopy analysis of the Laponite suspension demonstrated that the nano-sized Laponite layers maintained a better spatial network. Second, the Brunner–Emmet–Teller analysis of shale nano-pores indicated that shale immersed in the 2% Laponite suspension maintained a lower 10–100 nm nano-pore volume compared with 2% nano-SiO2 and 4% Na-BT. Furthermore, scanning electron microscopy of the shale showed that the Laponite layers plugged into the nano-pores, prevented free water from penetrating into the nano-cracks and decreased shale swelling in water. Third, the American Petroleum Institute filtration test showed that the Laponite suspension formed a far more smooth and compact filtrate cake than the Na-BT suspension. These unique abilities suggest that Laponite has the potential to be a multi-functional additive in WBDs for shale drilling to greatly improve rheological and nano-crack plugging properties and filtrate cake quality.

Laponite nanoparticle as a multi-functional additive in water-based drilling fluids

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Magnesium aluminum silicate nanoparticles as a high-performance rheological modifier in water-based drilling fluids

Laponite nanoparticle as a multi-functional additive in water-based drilling fluids