Micro-manganese as a weight agent for improving the suspension capability of drilling fluid and the study of its mechanism

Ma, Jingyuan; Yu, Panxi; Xia, Boru; An, Yuxiu

doi:10.1039/c9ra07283g

Cited by 24 publications

(19 citation statements)

References 27 publications

(32 reference statements)

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“…4. The fine uniform particles of Micromax additive result in a strong Brownian motion allowing the particles to create random collisions that consequently reduce the gravity effect on the solid particles and enhance the sag performance of the drilling fluid (Wen et al 2009;Ma et al 2019).…”

Section: Materials Characterizationmentioning

confidence: 99%

“…Many factors contributed to the improvement in solids suspension capability when adding Micromax additive to the drilling fluid formulations. Firstly, the strong Brownian motion of the fine, spherical, and uniform particles of Micromax additive allows the solid particles to make random collisions and reduces the gravity effect on the solid particles (Ma et al 2019). Secondly, the particles of Micromax additive have a higher surface area-to-volume ratio compared to barite that makes the lift and drag forces greater than the cohesion and gravity forces (Boyou et al 2019).…”

Section: Sag Testsmentioning

confidence: 99%

“…The filtrate volume was decreased from 2.6 to 1.2 cm 3 , the filter cake thickness was decreased from 2.9 to 1.9 mm, and the filter cake weight was reduced from 32.4 to 14 g. The fine and uniform particles of Micromax additive improved the bridging effect of the solid particles resulting in a thinner and more packed filter cake, Fig. 10 (Ma et al 2019). The less filtrate volume, filter cake weight, and filter cake thickness, the better the filtration performance, and the less damage caused to the drilled formation.…”

Section: Filtration Propertiesmentioning

confidence: 99%

“…Micromax additive is another alternative weighting agent to barite. It has a high specific gravity (4.8), and the fine particles of Micromax additive (about 1 µm) make the abrasiveness and sag tendency of Micromax additive less than that of barite (Mustapai 2011;Ma et al 2019). Micromax additive is reservoir friendly and causes less formation damage compared with other weighting agents (Al-Muhailan et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Barite–Micromax mixture, an enhanced weighting agent for the elimination of barite sag in invert emulsion drilling fluids

Basfar

Mohamed

Elkatatny

2020

J Petrol Explor Prod Technol

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Weighting agents are mixed with the drilling mud to provide the high density required to control high-pressure high-temperature (HPHT) wells throughout the drilling operation. Solids sag occurs when the weighting agent separates from the liquid phase and settles down, causing variations in the drilling fluid density. This study evaluates barite-manganese tetroxide (Micromax) mixture to eliminate solids sag issue encountered with weighted invert emulsion drilling fluids at HPHT conditions. Micromax additive was added to barite-weighted fluids in different concentrations, 0, 15, and 30 wt% of the total weighting agent. Static and dynamic sag tests were used to evaluate the sag tendency of the new formulation under static and dynamic conditions. The performance of the new formulation was evaluated by measuring the electrical stability, density, rheological, viscoelastic, and filtration properties of the drilling fluid. The obtained results showed that Micromax additive improves drilling fluid stability by reducing the sag tendency. Adding only 30 wt% of Micromax additive eliminated barite sag issue in both dynamic and static conditions at 350 °F. 30 wt% Micromax increased the base fluid density by 5.4% and the yield point by 115% and maintained the gel strength value at 12 lb/100 ft 2 , while it reduced the plastic viscosity by 30%. The addition of Micromax additive improved the viscoelastic properties of the drilling fluid by maintaining a higher storage modulus to the loss modulus ratio when compared with the barite sample (in the range 4-4.5). Furthermore, 30 wt% Micromax improved the filtration performance by reducing the filtrate volume, filter cake weight, and filter cake thickness by 50%.

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Section: Materials Characterizationmentioning

confidence: 99%

Section: Sag Testsmentioning

confidence: 99%

Section: Filtration Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Barite–Micromax mixture, an enhanced weighting agent for the elimination of barite sag in invert emulsion drilling fluids

Basfar

Mohamed

Elkatatny

2020

J Petrol Explor Prod Technol

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“…The base slurry, the base slurry containing PAAN, and the base slurry containing PAAN-G before and after aging were prepared and dispersed. 53 …”

Section: Materials and Methodsmentioning

confidence: 99%

Experimental Study on the Polymer/Graphene Oxide Composite as a Fluid Loss Agent for Water-Based Drilling Fluids

Pang

Zhang

et al. 2021

ACS Omega

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The wellbore instability caused by the penetration of drilling fluids into the formation is a vital problem in the drilling process. In this study, we synthesized a polymer/graphene oxide composite (PAAN-G) as a fluid loss additive in water-based drilling fluids. The three monomers (acrylamide (AM), 2-acrylamide-2-methyl-1-propane sulfonic acid (AMPS), N -vinylpyrrolidone (NVP)) and graphene oxide (GO) were copolymerized using aqueous free radical polymerization. The composition, micromorphology, and thermal stability properties of PAAN-G were characterized by Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analysis (TGA). According to the American Petroleum Institute (API) standards, the influence of PAAN-G on the rheological and filtration properties of bentonite-based mud was evaluated. Compared with PAAN, PAAN-0.2G has more stable rheological properties at high temperatures. The experimental results showed that even at a high temperature of 240 °C, PAAN-G can still maintain a stable fluid loss reduction ability. In addition, PAAN-G is also suitable for high-salt formations; it can still obtain satisfactory filtration volume when the concentration of sodium chloride (NaCl) and calcium chloride (CaCl 2 ) reached 25 wt %. Besides, we discussed the fluid loss control mechanism of PAAN-G through particle size distribution and scanning electron microscopy (SEM).

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Investigation of magnetite-based invert emulsion mud at high pressure high temperature

et al. 2021

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Micro-manganese as a weight agent for improving the suspension capability of drilling fluid and the study of its mechanism

Abstract: The micro-manganese (Mn3O4) was compared with the commonly used weighting agent barite to mainly study the suspension mechanism of Mn3O4.

Cited by 24 publications

References 27 publications

Barite–Micromax mixture, an enhanced weighting agent for the elimination of barite sag in invert emulsion drilling fluids

Barite–Micromax mixture, an enhanced weighting agent for the elimination of barite sag in invert emulsion drilling fluids

Experimental Study on the Polymer/Graphene Oxide Composite as a Fluid Loss Agent for Water-Based Drilling Fluids

Investigation of magnetite-based invert emulsion mud at high pressure high temperature

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