Formulation of new microemulsion systems containing produced water for removal of filter cake from olefin-based drilling fluid

Silva, Dennys Correia da; Araújo, Carolina Rayanne Barbosa de; Freitas, Júlio Cézar de Oliveira; Rodrigues, Marcos Allyson Felipe; Neto, Alcides de Oliveira Wanderley

doi:10.1016/j.petrol.2020.107425

Cited by 17 publications

(7 citation statements)

References 24 publications

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“…The contact angle is considered the best method for analysing surface wettability and it accounts for the thermodynamic equilibrium between the fluid/rock system [23,24]. The adopted methodology was proposed by Wanderley Neto et al, 2019, Silva et al, 2020, and Dantas et al, 2014 [11,12,24]. The sandstone sample (plug) used in these experiments was from the Botucatu Formation (Paraná, Brazil).…”

Section: Wettability and Contact Angle Measurementmentioning

confidence: 99%

“…Due to the presence of the highly flammable solvent, contact with the environment can cause serious damage. Some studies have shown the application of microemulsions and nanoemulsions in removing the filter cake formed by non-aqueous drilling fluids [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…These systems are considered thermodynamically stable, transparent, or translucent, with low interfacial tension, due to the presence of surfactant compounds at the oil/water interface [15,16]. Previous research has shown the application of microemulsions can be used as cleanup fluids: to solubilize the oil present in the drilling mud [17]; in the filter cake removal and wettability inversion [9][10][11][12][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Application of Microemulsion Systems in the Formulation of Biodegradable Pre-Flush Fluid for Primary Cementing

et al. 2020

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Oil well cleanup fluids (pre-flushes) are intermediate fluids pumped ahead of the cement slurry; they are able to clean the well walls by removing the filter cake formed by the drilling fluid, and leave the surface water-wet. This work’s main objective was to use biodegradable microemulsion systems as cleanup fluids in order to reduce the environmental impact. Three microemulsion systems were formulated, each composed of an oil phase, a surfactant and three different aqueous phases: glycerol, glycerol:water (mass ratio 1:1), and fresh water. The results show that all microemulsion systems were effective with 100% filter cake removal, with a removal time of less than 60 s. The wettability test and fluid compatibility analyses exhibited advantageous performances, without phase separation, variations in viscosity, gelation, or flocculation. The compressive strength and X-ray diffractometry (XRD) analysis showed the influence of the glycerol on the cement slurry properties, with the compressive strength resistance ranging from 8.0 to 10.7 MPa, and resulted in the formation of portlandite.

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Section: Wettability and Contact Angle Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of Microemulsion Systems in the Formulation of Biodegradable Pre-Flush Fluid for Primary Cementing

et al. 2020

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“…During drilling, drilling fluid is regarded as the blood in the drilling process because of its indispensable and vital functions, such as balancing the formation pressure, stabilizing the wellbore, transporting cuttings, and cooling the drilling tools. [ 9–13 ] Then, a series of preflush or spacer fluids were pumped through the casing to clean the borehole and separate the mud from the cement. Finally, during the cementing operation, the cement slurry is pumped to the designed location in the annulus through the casing.…”

Section: Introductionmentioning

confidence: 99%

Filter Cake Removal during the Cementing and Completion Stages in CO₂ Storage Wells: Current Developments, Challenges, and Prospects

Huang

et al. 2022

Energy Tech

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Carbon capture and storage (CCS) technology has become one of the most cost‐effective and promising ways to achieve global climate change mitigation goals. The CO2 storage capacity in depleted oil and gas reservoirs is currently the safest and most economical option. The long‐term sealing of the cement–formation interface in CO2 storage wells (CSW) is essential to avoid CO2 leakage. The filter cake easily affects the interfacial sealing ability, which is a thin impermeable layer formed by drilling fluid residue or solid particles remaining on the borehole wall due to permeable formation. Filter cake removal is essential for favorable cementation and production efficiency. This study highlights the current developments and the main challenges for oil‐ and water‐based mud filter cake removal during the cementing and completion process. Moreover, research ideas and recommendations for various types of filter cake removal are proposed to provide a reference for future work. This information helps deepen understanding with respect to the different filter cake removal options available in the CCS industry and provides a knowledge base that can facilitate the improvement of the cementing quality and production efficiency of existing systems to combat battle CSW safety and production efficiency problems.

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“…With the drilling operation advancing to deeper oil and gas wells, developing high-temperature and high-pressure (HTHP) drilling fluid has become a trend. , Under differential pressure, the fluid in the drilling fluid will penetrate the surrounding formation of the well wall. At this time, the solid particles and polymers in the drilling fluid will be filtered out and form mud cake on the well wall (Figure a). − The mud cake is beneficial for drilling because it will reduce fluid loss and ensure wellbore stability. − However, the interface between the formation and cement sheath is critical to the integrity and environmental protection of oil and gas wells . HTHP drilling fluid makes it difficult to remove from the formed mud cake, which will always exist between the cement sheath and well wall.…”

Section: Introductionmentioning

confidence: 99%

Novel Evaluation Method for Flushing Efficiency Based on the Principle of Wall Shear Rate Equality under High Temperature and High Pressure

Yuan

Yang

et al. 2022

ACS Omega

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An excellent flushing efficiency evaluation device is indispensable for studying the cementing flushing fluid. However, the existing flushing efficiency evaluation device cannot simulate the formation and flushing process of the downhole mud cake. Therefore, this paper proposes a novel flushing efficiency evaluation device that can simulate the formation and flushing of downhole mud cakes. The rotational speed of the device during flushing and the rotor’s diameter is deduced based on the principle of equal wall shear rate. The evaluation device and method can be used to quantitatively evaluate the flushing efficiency of the flushing liquid on the mud cake under high temperatures and high pressures. This device analyzed the effects of the annular gap, temperature, construction displacement, and flushing fluids on flushing efficiency. The results show that the smaller the annular gap, the higher the temperature, the larger the displacement, the higher the scouring efficiency, and the higher the shear bond strength. Fiber flushing has the dual function of mechanical and chemical flushing, so its flushing efficiency is 14.75% higher than that of heavy flushing fluid at 10 min. The surfactant in the emulsified rinse leads to a sudden increase in rinse efficiency in the middle and late stages. The reduced flushing efficiency of the flushing fluid is due to the reduced ζ potential.

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Formulation of new microemulsion systems containing produced water for removal of filter cake from olefin-based drilling fluid

Cited by 17 publications

References 24 publications

Application of Microemulsion Systems in the Formulation of Biodegradable Pre-Flush Fluid for Primary Cementing

Application of Microemulsion Systems in the Formulation of Biodegradable Pre-Flush Fluid for Primary Cementing

Filter Cake Removal during the Cementing and Completion Stages in CO₂ Storage Wells: Current Developments, Challenges, and Prospects

Novel Evaluation Method for Flushing Efficiency Based on the Principle of Wall Shear Rate Equality under High Temperature and High Pressure

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Formulation of new microemulsion systems containing produced water for removal of filter cake from olefin-based drilling fluid

Cited by 17 publications

References 24 publications

Application of Microemulsion Systems in the Formulation of Biodegradable Pre-Flush Fluid for Primary Cementing

Application of Microemulsion Systems in the Formulation of Biodegradable Pre-Flush Fluid for Primary Cementing

Filter Cake Removal during the Cementing and Completion Stages in CO2 Storage Wells: Current Developments, Challenges, and Prospects

Novel Evaluation Method for Flushing Efficiency Based on the Principle of Wall Shear Rate Equality under High Temperature and High Pressure

Contact Info

Product

Resources

About

Filter Cake Removal during the Cementing and Completion Stages in CO₂ Storage Wells: Current Developments, Challenges, and Prospects