Evaluating the Wear of Polycrystalline Diamond Compact Drill Bit Cutters using Indentation and Scratch Tests

Abbas, Rafid K.; Hassanpour, Ali

doi:10.14500/aro.10278

Cited by 2 publications

(3 citation statements)

References 17 publications

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“…From the provided data of all wells in the study, the volume of wear or dullness of the tooth (insert), (Vi) is determined from Equation (20), while the height of the dulled tooth (ℎ ) is calculated from Equation (14).…”

Section: -Results and Discussionmentioning

confidence: 99%

“…Hassanpour [14] suggested a new formula for estimating the oil drill bit wear based on experimental tests of micro and nano-indentation, The study showed that the obtained experimental results of the samples being tested could be unified on a single sketch taking into consideration that three parameters have the most dominant influence on drill bit wear (load, sliding distance, and hardness).…”

Section: =mentioning

confidence: 99%

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A novel method for estimating the real-time dullness of tri-cone oil drill bits

Abbas

Ghanbarzadeh

Hassanpour

2020

Engineering Failure Analysis

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It is vital to anticipate the durability of drill bits for all drilling operations to prolong the drilling processes and reducing economic losses. Many attempts have been made to handle this issue by assessing the parameter of specific energy of the bits generated during drilling along with well logs and geophysical analyses. Although these techniques could provide acceptable precautions of the dullness of bit cutters, lack of consideration of material properties of the rock and the bit is their main shortcoming which could result in misleading interpretations. The present study deals with the development of a wear model of Tri-cone bits based on the concept of three body abrasive wear taking into account two main factors , rock hardness and the hardness of the materials forming the Tri-cone drill bit. Other parameters that have significant effect are also considered such as weight on bit, penetration rate, rotation speed and the required time to penetrate an interval depth. In this research, the bit wear quantified by the new developed model is compared with the in-situ dullness of the drill bit for a number of wells being excavated in southern Iraq, where a reasonable agreement was observed. The present work could be extended on other oil wells and applied on other types of drill bits to confirm the validation of the new model.

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Section: -Results and Discussionmentioning

confidence: 99%

Section: =mentioning

confidence: 99%

A novel method for estimating the real-time dullness of tri-cone oil drill bits

Abbas

Ghanbarzadeh

Hassanpour

2020

Engineering Failure Analysis

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“…Micro-and nano-scratch tests wear applied to estimate the wear volume of the PDC cutters diamond layers. The experimental results were compared to the results obtained from wear models in the past (Abbas and Hassanpour, 2018). Yang et al (2019) presented a model as a combination of mechanical specific energy, principal component analysis, and wavelet analysis to decide when to pull the bit out of the hole and predict cutters wear of the Kymera PDC bit.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modelling of performance and wear prediction of PDC drill bits: Impact of bit profile, bit hydraulic, and rock strength

Mazen

Mujtaba

Hassanpour

et al. 2020

Journal of Petroleum Science and Engineering

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The estimation of Polycrystalline Diamond Compact (PDC) cutters wear has been an area of concern for the drilling industry for years now. The cutter's wear has been measured practically by pulling the bit out for evaluation at the surface. It is important to find the right time for tripping out as this helps to avoid the fishing job and reduces the operational cost significantly.The prediction of the drilling performance is based on the interaction of cutter and rock. Several authors focused on the cutter-rock interface but only a few researchers tried to model the wear of the PDC bit cutters. The aim of this research is to understand the relationships between the rate of penetration (ROP) and the drilling variables per each foot, and then determine the overall bit efficiency for the whole drilling operation. A new mathematical model is derived to predict the PDC bit performance by considering the factors that were already not taken into account.These factors include rock strength, bit design, and bit hydraulic. The model investigates the effect of these parameters to estimate the abrasive cutters wear on the inner and the outer bit cones by deriving modified equations to calculate the mechanical specific energy (MSE), torque, and depth of cut (DOC) as a function of effective blades (EB). The model is used to forecast the bit cutters wear conditions in four wells in the oil fields located in Libya, which were drilled with three different PDC's sizes. The model enables the results to be compared to the actual bit cutters wear measured for inner and outer cones. The results are found that are well in agreement with the actual field data obtained in bit records.

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Evaluating the Wear of Polycrystalline Diamond Compact Drill Bit Cutters using Indentation and Scratch Tests

Cited by 2 publications

References 17 publications

A novel method for estimating the real-time dullness of tri-cone oil drill bits

A novel method for estimating the real-time dullness of tri-cone oil drill bits

Mathematical modelling of performance and wear prediction of PDC drill bits: Impact of bit profile, bit hydraulic, and rock strength

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