Development of Non-damaging and Inhibitive Water Based Oil Well Drilling Fluids

Mahto, Vikas; Srikanth, P.; Krishna, B. Vamsi

doi:10.1080/10916466.2010.531353

Cited by 26 publications

(10 citation statements)

References 6 publications

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“…The pH of the developed system was in range of 8.5-9.0. The developed drilling fluid systems need to be inhibited and must control the swelling pressure hence 5 % KCL is added to the developed drilling fluids which is the normal concentration used in development of inhibited drilling in most of the fields [13].…”

Section: Resultsmentioning

confidence: 99%

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Effect of Fly Ash on the Rheological and Filtration Properties of Water Based Drilling Fluids

Mahto¹

2013

IJRET

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An experimental investigation was carried out to study the effect of fly ash on the rheological and filtration properties of water based drilling fluids with the objective of the development of environmentally acceptable non-damaging and inhibitive drilling fluid system to drill sensitive formations. Initially, different drilling fluids combinations were prepared using carboxy methyl cellulose (low viscosity grade), polyanionic cellulose, xanthan gum, and potassium chloride. The rheological properties as well as filtration properties of these drilling fluids were measured by API recommended methods. These drilling fluids show very good rheological behavior but poor filtration loss characteristics. When fly ash was added in these drilling fluid combinations, a nanoparticles fluid system was established which has better control on filtration properties without affecting the rheological properties and has good potential for the drilling of sensitive formations.

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Section: Resultsmentioning

confidence: 99%

“…The filtration properties of a drilling fluid system are highly influenced by the use of fly ash in the developed mud system [13]. Fly ash is eco-friendly and doesn't raise any environmental issues as it is quite compatible with the soil.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fly Ash on the Rheological and Filtration Properties of Water Based Drilling Fluids

Mahto¹

2013

IJRET

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“…Oil based muds (OBM) give greater shale stability than the water based mud system, however high performance water-based muds are the good alternative to drill troublesome shale formations as these contain relatively lower concentration of the organics and may result in favorable conditions for the fluid disposal at the drilling sites, especially in marine environment. Different polymers are added during the formulation of the water based muds in order to provide desired rheological properties, filtration characteristics, and shale inhibition to the system (Khodja et al, 2010;Mahto and Sharma, 2004;Mahto et al, 2013;Caenn and Chilingarian, 1996;Chilingarian and Vorabutr, 1981). Partially hydrolyzed polyacrylamide (PHPA), sodium silicate, glycols etc are manly used to improve the shale instability during the drilling of shale formations (Hale and Mody, 1993;Bland, 1994).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of polyacrylamide-grafted-polyethylene glycol/silica nanocomposite as potential additive in water based drilling mud for reactive shale formation

Jain

Mahto

Sharma

2015

Journal of Natural Gas Science and Engineering

145

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“…Silicate systems have been used earlier too, but the control of rheological properties was difficult. Silicate muds along with potassium salt and polymer forms even more effective shale inhibitive combination with better rheological properties (Mahto and Sharma 2004;Patel et al 2007;Khodja et al 2010;Mahto et al 2013). High-performance WBM containing amine-based polymers have been reported to have potential to be as effective as OBM.…”

Section: Introductionmentioning

confidence: 99%

Shale inhibition by low-molecular-weight cationic polymer in water-based mud

Beg

Sharma

Ojha

2018

J Petrol Explor Prod Technol

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The presence of oligomers possessing amine or ammonium functionality in drilling fluid plays an important role in stabilizing the shale formations during drilling with water-based mud. In this study, we have compared the activity of neutral to charged amine polymers towards shale stabilization. Low-molecular-weight polymer possessing charged moieties provided superior inhibitive capacity compared to that of the neutral amine functionality-based polymer. The polymer with cationic functionality (polyAETMAC) exhibited higher shale recovery, lesser shale swelling and lower capillary suction time compared to that of the neutral amine-based system (polyDMAPMA) supporting the above. Shale recovery in shale disintegration test improved from 92.3 to 98.7% for polyAETMAC concentration of 0.625 w/v% in water-based mud. The prodigious shale recovery is attributed to the strong interaction between the cationic sites of the polymer with the minerals present in the shale. The overall rheological properties of drilling fluids also improved in the presence of charged amine polymer before and after hot rolling. Apparent viscosity of mud increased by ~ 29% for polyAETMAC as compared to ~ 25% for polyDMAPMA at a concentration of 0.625 w/v%. Plastic viscosity and yield point of base mud were also improved by ~ 43% and ~ 15% at 0.0625 w/v% concentration of polyAETMAC and to a similar extent by polyDMAPMA for the same concentration. The decrease in API fluid loss after hot rolling of drilling fluid at 100 °C for 16 h was ~ 20% for polyDMAPMA and ~ 13% for polyAETMAC compared to base mud for the same concentration of the polymers. These polymers can be used as a potential shale stabilizer for water-based drilling fluids.

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Development of Non-damaging and Inhibitive Water Based Oil Well Drilling Fluids

Cited by 26 publications

References 6 publications

Effect of Fly Ash on the Rheological and Filtration Properties of Water Based Drilling Fluids

Effect of Fly Ash on the Rheological and Filtration Properties of Water Based Drilling Fluids

Evaluation of polyacrylamide-grafted-polyethylene glycol/silica nanocomposite as potential additive in water based drilling mud for reactive shale formation

Shale inhibition by low-molecular-weight cationic polymer in water-based mud

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