Drilling Fluid Evaluation Using Yield Point-Plastic Viscosity Correlation

Chilingarian, George V.; Alp, Ersen; Caenn, Ryan; Al-Salem, Mouhammed; Uslu, Saffet; Gonzales, Sue; Dorovi, Ronald J.; Mathur, R. M.; Yen, Teh Fu

doi:10.1080/00908318608946052

Cited by 45 publications

(43 citation statements)

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“…Applying the Herschel-Bulkley flow model to determine the low-shear yield point (LSYP) [42], Equation (1).…”

Section: Rheological Propertiesmentioning

confidence: 99%

“…To reach the target formations in the well, the drilling fluid program should be designed carefully to safely drill the well with economical wise. Drilling fluids cost is considered to share a portion of around 25-40% of the total drilling operations cost [1]. Some problems that occur during the drilling operations such as mud losses will add more cost to the total drilling cost.…”

Section: Introductionmentioning

confidence: 99%

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Effect of pH on Rheological and Filtration Properties of Water-Based Drilling Fluid Based on Bentonite

et al. 2019

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The design of drilling fluids is very important for the drilling operation success. The rheological properties play a key role in the performance of the drilling fluid. Therefore, studying the mud rheological properties of the water-based drilling fluid based on bentonite is essential. The main objectives of this study are to address the effect of pH changes on the rheological and filtration properties of the water-based drilling fluid based on bentonite and to provide a recommended pH range for this drilling fluid for a safe and high-performance drilling operation. Different samples of the water-based drilling fluid based on bentonite with different pH values were prepared, and the rheological properties such as plastic viscosity, yield point, and gel strength were measured. After that, the filtration test was performed under 300 psi differential pressure and 200 °F. The pH for the water-based drilling fluid based on bentonite significantly affects the mud rheology. The shear stress and shear rate relation were varying with the change in the pH. Increasing the pH from 8 to 12 resulted in decreasing the plastic viscosity by 53% and the yield point by 82%, respectively. The ratio of yield point / plastic viscosity was 1.4 for pH of 8 while it decreased to 0.5 for a pH of 11 and 12. There was a significant decrease in the gel strength readings by increasing the pH. The filtrate volume and filter cake thickness increased by increasing pH. The filtration volume increased from 9.5 cm3 to 12.6 cm3 by increasing the pH from 9 to 12. The filter cake thickness was 2 mm at 9 pH, while it was increased to 3.6 mm for 12 pH. It is recommended from the results to keep the pH of water-based drilling fluid based on bentonite in the range of 9 to 10 as it provides the optimum mud rheological and filtration properties. The findings of this study illustrated that keeping the pH in the range of 9 to 10 will reduce the plastic viscosity that will help in increasing the rate of penetration and reducing the required pump pressure to circulate the mud to the surface which will help to sustain the drilling operation. In addition, reducing the filtrate volume will produce a thin filter cake which will help in avoiding the pipe sticking and protect the environment. In general, optimizing the pH of the water-based drilling fluid based on bentonite in the range of 9 to 10 will improve the drilling operation and minimize the total cost.

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“…Applying the Herschel-Bulkley flow model to determine the low-shear yield point (LSYP) [42], Equation (1).…”

Section: Rheological Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of pH on Rheological and Filtration Properties of Water-Based Drilling Fluid Based on Bentonite

et al. 2019

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“…From an economic point of view, the drilling fluids cost share 25-40% of the total well drilling cost [49]. Therefore, designing and monitoring the drilling fluids parameters are very critical for drilling operations.…”

Section: Applications Of Artificial Intelligence In the Petroleum Indmentioning

confidence: 99%

Real-Time Prediction of Rheological Properties of Invert Emulsion Mud Using Adaptive Neuro-Fuzzy Inference System

Alsabaa

Gamal

Elkatatny

et al. 2020

Sensors

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Tracking the rheological properties of the drilling fluid is a key factor for the success of the drilling operation. The main objective of this paper is to relate the most frequent mud measurements (every 15 to 20 min) as mud weight (MWT) and Marsh funnel viscosity (MFV) to the less frequent mud rheological measurements (twice a day) as plastic viscosity (PV), yield point (YP), behavior index (n), and apparent viscosity (AV) for fully automating the process of retrieving rheological properties. The adaptive neuro-fuzzy inference system (ANFIS) was used to develop new models to determine the mud rheological properties using real field measurements of 741 data points. The data were collected from 99 different wells during drilling operations of 12 ¼ inches section. The ANFIS clustering technique was optimized by using training to a testing ratio of 80% to 20% as 591 data points for training and 150 points, cluster radius value of 0.1, and 200 epochs. The results of the prediction models showed a correlation coefficient (R) that exceeded 0.9 between the actual and predicted values with an average absolute percentage error (AAPE) below 5.7% for the training and testing data sets. ANFIS models will help to track in real-time the rheological properties for invert emulsion mud that allows better control for the drilling operation problems.

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“…If the gauge hole is not maintained and the diameter of the borehole increases, a uid with a high RYP is desirable. 30,31 The FL API of water-based drilling uid was measured using a ZNZ-D3 type medium-pressure ltration apparatus (Qingdao Haitongda Special Instrument Co., Ltd., China). The hightemperature/high-pressure ltrate volume (FL HTHP ) was determined with a GGS42 type high-temperature/high-pressure ltration apparatus (Qingdao Jiaonan Tongchun Machinery Petroleum instrument Ltd., China).…”

Section: Synthesismentioning

confidence: 99%

Effect of molecular flexibility on the rheological and filtration properties of synthetic polymers used as fluid loss additives in water-based drilling fluid

Chu

Lin

2019

RSC Adv.

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Drilling Fluid Evaluation Using Yield Point-Plastic Viscosity Correlation

Cited by 45 publications

References 0 publications

Effect of pH on Rheological and Filtration Properties of Water-Based Drilling Fluid Based on Bentonite

Effect of pH on Rheological and Filtration Properties of Water-Based Drilling Fluid Based on Bentonite

Real-Time Prediction of Rheological Properties of Invert Emulsion Mud Using Adaptive Neuro-Fuzzy Inference System

Effect of molecular flexibility on the rheological and filtration properties of synthetic polymers used as fluid loss additives in water-based drilling fluid

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