Characterization of Indian Bentonite Clay Samples for Water-based Drilling Fluids

2008 ◽  
Vol 26 (15) ◽  
pp. 1859-1868 ◽  
Author(s):  
V. Mahto ◽  
V. P. Sharma
Keyword(s):  
Bentonite Clay ◽  
Drilling Fluids ◽  
Water Based

scholarly journals Studies of new occurrences of bentonite clays in the State of Paraíba for use in water based drilling fluids

2013 ◽  
Vol 66 (4) ◽  
pp. 485-491 ◽  
Author(s):  
Isabelle A. Silva ◽  
Julliana Marques R. Costa ◽  
Romualdo R. Menezes ◽  
Heber S. Ferreira ◽  
Gelmires de A. Neves ◽  
...  
Keyword(s):  
Bentonite Clay ◽  
Particle Size Analysis ◽  
The State ◽  
Size Analysis ◽  
Drilling Fluids ◽  
X Ray ◽  
Clay Deposits ◽  
Water Based ◽  
Bentonite Clays ◽  
New Occurrences

New bentonite clay deposits have recently been discovered in the state of Paraíba, mainly in the municipalities of Cubati and Pedra Lavrada, creating great expectations in view of the possibility of expanding industrial production using these new reserves. The aim of this study was to study the new occurrences of bentonite clay in Paraíba, particularly in the municipality of Pedra Lavrada, for use in water based drilling fluids. The mineralogical properties of the clays were characterized by particle size analysis using laser diffraction, and thermogravimetric and differential thermal analysis, and its chemical composition was analyzed by X-ray fluorescence, X-ray diffraction, cation exchange capacity and specific surface area. The bentonite clays were treated with sodium carbonate at concentrations of 75, 100, 125, 150 and 175mEq/100g of dry clay, to transform them from polycationic to sodium form. For the technological characterization, drilling fluids were prepared according to the standards of Petrobras. The results indicated that the mineralogical composition of the samples consisted of montmorillonite, kaolinite and quartz. As for their rheological properties, the samples were found to partially meet the rheological requirements of the Petrobras standard.

Characterization of Encapsulated Oil as an Additive to Water-Based Drilling Fluids: Operational Improvements in Lubricity, Drag, and ROP

2014 ◽  
Author(s):  
F.J. Schuh ◽  
A. Coragliotti ◽  
C.D. DiCicco ◽  
R.A. Nagatani ◽  
A. Rea ◽  
...  
Keyword(s):  
Drilling Fluids ◽  
Water Based

scholarly journals Effect of carboxymethylcellulose on the rheological and filtration properties of bentonite clay samples determined by experimental planning and statistical analysis

Cerâmica ◽  
2018 ◽  
Vol 64 (370) ◽  
pp. 254-265 ◽  
Author(s):  
B. M. A. Brito ◽  
P. M. Bastos ◽  
A. J. A. Gama ◽  
J. M. Cartaxo ◽  
G. A. Neves ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Statistical Analysis ◽  
Rheological Properties ◽  
Apparent Viscosity ◽  
Bentonite Clay ◽  
Plastic Viscosity ◽  
Drilling Fluids ◽  
Experimental Planning ◽  
Water Based ◽  
Filtration Properties

Abstract Over the past few years, considerable research has been conducted using the techniques of mixture delineation and statistical modeling. Through this methodology, applications in various technological fields have been found/optimized, especially in clay technology, leading to greater efficiency and reliability. This work studied the influence of carboxymethylcellulose on the rheological and filtration properties of bentonite dispersions to be applied in water-based drilling fluids using experimental planning and statistical analysis for clay mixtures. The dispersions were prepared according to Petrobras standard EP-1EP-00011-A, which deals with the testing of water-based drilling fluid viscosifiers for oil prospecting. The clay mixtures were transformed into sodic compounds, and carboxymethylcellulose additives of high and low molar mass were added, in order to improve their rheology and filtrate volume. Experimental planning and statistical analysis were used to verify the effect. The regression models were calculated for the relation between the compositions and the following rheological properties: apparent viscosity, plastic viscosity, and filtrate volume. The significance and validity of the models were confirmed. The results showed that the 3D response surfaces of the compositions with high molecular weight carboxymethylcellulose added were the ones that most contributed to the rise in apparent viscosity and plastic viscosity, and that those with low molecular weight were the ones that most helped in the reduction of the filtrate volume. Another important observation is that the experimental planning and statistical analysis can be used as an important auxiliary tool to optimize the rheological properties and filtrate volume of bentonite clay dispersions for use in drilling fluids when carboxymethylcellulose is added.

Characterization of Filter Cake Generated by Water-Based Drilling Fluids Using CT Scan

2012 ◽  
Vol 27 (02) ◽  
pp. 282-293 ◽  
Author(s):  
Salah Elkatatny ◽  
Mohamed A. Mahmoud ◽  
Hisham A. Nasr-El-Din
Keyword(s):  
Ct Scan ◽  
Filter Cake ◽  
Drilling Fluids ◽  
Water Based

scholarly journals Influence of the purification of bentonite clay from new deposits in the state of Paraíba-Brazil for use in water-based drilling fluids

Cerâmica ◽  
2018 ◽  
Vol 64 (372) ◽  
pp. 538-546 ◽  
Author(s):  
I. D. S. Pereira ◽  
V. C. Silva ◽  
J. F. Duarte Neto ◽  
G. A. Neves ◽  
H. C. Ferreira ◽  
...  
Keyword(s):  
Bentonite Clay ◽  
Exchange Capacity ◽  
The State ◽  
Drilling Fluids ◽  
Purification Process ◽  
X Ray Diffraction ◽  
Fluid System ◽  
X Ray ◽  
Water Based ◽  
Filtration Properties

Abstract Bentonite clay is used all around the world as an additive in drilling fluids. However, impurities present in this material can compromise the compatibility of the clay-fluid system. The present study aimed to analyze the effects of the purification of bentonite samples from new deposits in the state of Paraíba, Brazil, in order to make them usable in water-based drilling fluids. The samples were first purified by centrifugation, and their characteristics were determined using the following techniques: laser granulometry, X-ray diffraction, chemical analysis, cation exchange capacity, thermogravimetric analysis, and differential thermal analysis. After these determinations, the polycationic clay samples were made sodic through the addition of sodium carbonate (Na2CO3) in the proportion of 125 meq/100 g of dry clay. The rheological and filtration properties (apparent viscosity, plastic viscosity, and filtrate volume) were then tested. The results showed that the purification process was efficient for removing accessory minerals such as quartz, iron, and carbonates. With regard to rheological and filtration properties, the results following centrifugation showed that the material can be suitable for use in water-based drilling fluids.

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