Estimation of optimal drilling efficiency and rock strength by using controllable drilling parameters in rotary non-percussive drilling

Feng, Shijie; Wang, Yujie; Guolai, Zhang; Zhao, Yufei; Wang, Shanyong; Cao, Rihong; Enshang, Xiao

doi:10.1016/j.petrol.2020.107376

Cited by 26 publications

(6 citation statements)

References 26 publications

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“…The main control objective for any effective drill-string control strategy is to minimise (ideally eliminate) the damaging stick-slip oscillations and guide the system into a state of constant drilling where possible [46,47]. The MIRC-based damping scheme with Tracking Control is a combination of four gains with a desired reference variable viz: the Output gain λ, the Feed-Through gain κ and the Integrator gain η, which are all connected to an Integrator belonging to the MIRC; as depicted in Fig.…”

Section: Modified Integral Resonant Control-based Damping With Integral Tracking Featuring Delay and Constraintsmentioning

confidence: 99%

Feedback control method to suppress stick-slip in drill-strings featuring delay and actuation constraints

MacLean

Vaziri

Aphale

et al. 2021

Eur. Phys. J. Spec. Top.

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In this work, performance of a modified-integral resonant controller with integral tracking is investigated numerically under the effects of actuator delay and actuation constraints. Actuation delay and constraints naturally limit controller performance, so much so that it can cause instabilities. A 2-DOF drill-string m with nonlinear bit–rock interactions is analysed. The aforementioned control scheme is implemented on this system and analysed under the effects of actuation delay and constraints and it is found to be highly effective at coping with these limitations. The scheme is then compared to sliding-mode control and shows to be superior in many regimes of operation. Lastly, the scheme is analysed in detail by varying its gains as well as varying system parameters, most notably that of actuation delay.

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Section: Modified Integral Resonant Control-based Damping With Integral Tracking Featuring Delay and Constraintsmentioning

confidence: 99%

Feedback control method to suppress stick-slip in drill-strings featuring delay and actuation constraints

MacLean

Vaziri

Aphale

et al. 2021

Eur. Phys. J. Spec. Top.

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“…Li [19] et al analyzed the influence of working parameters, such as impact power, propulsion force, rotating speed and drill bit type, on drilling efficiency and obtained the relationships between the drilling velocity and drilling parameters. Feng [20] et al performed a field-drilling test to obtain the optimal drilling efficiency, and they found the optimal drilling conditions and rock drillability. Moreover, the combined thermo-mechanical drilling technology and acoustic emission method were utilized to investigate the rock drillability [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…An empirical formula was put forward by Poane [28] et al to evaluate the relationships between the drilling parameters and specific energy (SE). Feng [20] et al improved the SE model using the controllable parameters (thrust and ROP). In addition, Zhang [29] et al proposed a new rock drillability index, I d , to evaluate rock classification, and it was applied to classify rock types successfully as an in situ test.…”

Section: Introductionmentioning

confidence: 99%

Regressive and Big-Data-Based Analyses of Rock Drillability Based on Drilling Process Monitoring (DPM) Parameters

et al. 2022

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Accurate, rapid and effective analysis of rock drillability is very important for mining, civil and petroleum engineering. In this study, a method of rock drillability evaluation based on drilling process monitoring (DPM) parameters is proposed by using the field drilling test data. The revolutions per minute (N), thrust, torque and rate of penetration (ROP) were recorded in real time. Then, the two-dimensional regression analysis was utilized to investigate the relationships between the drilling parameters, and the three-dimensional regression analysis was used to establish models of ROP and specific energy (SE), in which the N-F-ROP, N-T-ROP and the improved SE model were obtained. In addition, the random forest (RF) and support vector machine combined with genetic algorithm (GA-SVM) were applied to predict rock drillability. Finally, a prediction model of uniaxial compressive strength (UCS) was established based on the SE and drillability index, Id. The results show that both regression models and prediction models have good performance, which can provide important guidance and a data source for field drilling and excavation processes.

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“…In particular, rotary drilling systems are widely used in many fields of mining and tunneling, research and acquisition of natural resources, etc. (Bilgin and Kahraman 2003;Franca 2011;Shangxin et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…In these SE models, the mechanical efficiency coefficient has also been defined for the calculation of SE. Then Shangxin et al (2020) conducted a study on rotary drilling systems for drilling performance measurement in the field and modified Teale's original SE model. Shangxin et al showed that torque has a linear relationship with thrust but is unaffected by rotational speed.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the rock drilling performance of rotary core drilling

Sakız

Aydın

Yaralı

2021

Bull Eng Geol Environ

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The specific drilling energy and penetration rate are very important performance parameters for drilling. The main objective of this study was to investigate the effect of operational machine parameters and rock properties on drilling performance parameters for rotary core drilling conditions. For this purpose, a rotary core drilling test machine was used to measure drilling performance, taking into account the operational machine parameters (weight on the bit, rotation speed, torque, power of the machine, etc.). The experiments were carried out using 12 different operational conditions, consisting of 3 different rotational speeds (210, 330, and 470 rpm) and 4 different dead loads (50, 70, 90, and 110 kg) on 16 rock samples during the core drilling of rocks with different geological origins, i.e., igneous, sedimentary clastic, and sedimentary carbonated. Subsequently, specific energy values were derived from the experimental values of mechanical and electrical characteristics using relevant empirical models. Among the empirical calculations, the specific energy obtained from the electrical measurements indicates that it is more stable than that of the other empirical approaches. On the other hand, as expected, there is a strong inverse relationship between specific drilling energy and penetration rate. Moreover, regression analysis between the specific energy (470 rpm and 70 kg load) and the properties of the rock samples presents a strong relationship. It is concluded that drilling rate index, Equotip hardness, and applied load are the most influential factors on the drilling performance of rotary drilling. In addition, optimum drilling performance is noted when the penetration rate reaches 1 m/h.

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Estimation of optimal drilling efficiency and rock strength by using controllable drilling parameters in rotary non-percussive drilling

Cited by 26 publications

References 26 publications

Feedback control method to suppress stick-slip in drill-strings featuring delay and actuation constraints

Feedback control method to suppress stick-slip in drill-strings featuring delay and actuation constraints

Regressive and Big-Data-Based Analyses of Rock Drillability Based on Drilling Process Monitoring (DPM) Parameters

Investigation of the rock drilling performance of rotary core drilling

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