Investigation on the cuttings carrying capacity of a novel retractable drill bit used in casing while drilling with air reverse circulation

Cao, Pinlu; Cui, Guoqing; Qi, Bo; Yao, Shanshan; Zheng, Zijun; Bo, Kun

doi:10.1016/j.petrol.2022.111079

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…According to the principle of orthogonal design 54 , 55 , the web cloud platform was used to carry out the orthogonal experiments to obtain some sample data. There were four mechanical parameters of surrounding rock in the back analysis, and seven values of each parameter were designed, i.e., 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, and 1.3 times of its initial value listed in Table 3 .…”

Section: Engineering Application Of the Pso-bp Intelligent Feedback A...mentioning

confidence: 99%

Cloud inversion analysis of surrounding rock parameters for underground powerhouse based on PSO-BP optimized neural network and web technology

Qu,

Xie,

Pei

et al. 2024

Sci Rep

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Aiming at the shortcomings of the BP neural network in practical applications, such as easy to fall into local extremum and slow convergence speed, we optimized the initial weights and thresholds of the BP neural network using the particle swarm optimization (PSO). Additionally, cloud computing service, web technology, cloud database and numerical simulation were integrated to construct an intelligent feedback analysis cloud program for underground engineering safety monitoring based on the PSO-BP algorithm. The program could conveniently, quickly, and intelligently carry out numerical analysis of underground engineering and dynamic feedback analysis of surrounding rock parameters. The program was applied to the cloud inversion analysis of the surrounding rock parameters for the underground powerhouse of the Shuangjiangkou Hydropower Station. The calculated displacement simulated with the back-analyzed parameters matches the measured displacement very well. The posterior variance evaluation shows that the posterior error ratio is 0.045 and the small error probability is 0.999. The evaluation results indicate that the intelligent feedback analysis cloud program has high accuracy and can be applied to engineering practice.

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Section: Engineering Application Of the Pso-bp Intelligent Feedback A...mentioning

confidence: 99%

Cloud inversion analysis of surrounding rock parameters for underground powerhouse based on PSO-BP optimized neural network and web technology

Qu,

Xie,

Pei

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Rafezi and Hassani [6] established bit health monitoring system to achieve fully autonomous blast hole drilling. Cao et al [7] investigated the effect of the structural parameters of the drill bit used in the Casing-while-Drilling technology on its rock cuttings carrying capacity and reverse circulation performance. He et al [8] verified effect of multinozzle bit on sandstone by numerical simulation and indoor experiment, however, nozzle fluid medium is water.…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of Mining Tri-cone Bit Air Nozzle by CFD

Yan,

Wang,

Tang

et al. 2024

J. Phys.: Conf. Ser.

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Performance of the air nozzle of the mine tri-cone bit directly affects life of bit and rock breaking efficiency. The shape of air nozzle influences performance of mine tri-cone bit. It is necessary to optimize the shape of the air nozzle of tri-cone drill bits. The general specifications of gas mine tri-cone bit were analysed. Working condition and parameters of the air nozzle of the mine tri-cone bit were determined. A three-dimensional model of the air nozzle of the mine tri-cone bit was established. The characteristic geometry and range of air nozzle were determined. The performance index of air nozzle was proposed. An orthogonal experiment table of characteristic geometry of air nozzle was established. The ranking of influence weights of characteristic geometry was obtained. Key characteristic geometry which affects the performance of air nozzle was also obtained. This thesis work helps to improve the working performance of the gas nozzle of the three-cone bit. It can provide some reference ideas for the optimized design of the cone bit

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“…Due to the relatively large diameter of the rescue well, it is difficult to discharge cu ing from the hole bo om to the ground surface using DC drilling [12]. DTH hammer RC drilling is an innovative percussive-rotary drilling technology driven by compressed air and is a potentially effective technology for large-diameter wells [13]. It is a fast and cost-effective way to reduce the air injection rate by at least 70% and improve hole cleaning efficiency [14].…”

Section: Introductionmentioning

confidence: 99%

Optimum Design of Large-Diameter Reverse Circulation Drill Bit for Drilling Rescue Wells Using Orthogonal Experimental Method and CFD Simulation

Zhao

et al. 2023

Energies

Self Cite

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Down-the-hole (DTH) hammer drilling with reverse circulation is a novel, mobile, high-speed drilling system suitable for the specific requirements of mine rescue. This technology can be applied to shorten the rescue time during mine accidents. The performance of reverse circulation (RC) drilling depends on the structural design of the drill bit. An orthogonal experimental design is executed to investigate the effect of the structural design parameters of the large-diameter drill bit for drilling rescue wells on the cutting carrying capacity and reverse circulation performance. This study employs computational fluid dynamics (CFD) software to solve the Navier–Stokes equation for three-dimensional steady flow and calculate the flow field around the drill bit to evaluate the RC efficiency. Six key geometric parameters were proven to have a direct influence on the RC performance, including the diameter of suction nozzles Dn, the length of nozzles L, the quantity of nozzles N, the diameter of the pilot hole Dg, the inclination angle of nozzles θs, and the deflection angle of nozzles θd. The CFD simulation experiments were implemented according to the orthogonal array L18(37) and were analyzed using the range, variance, and regression analysis. A mathematical model was developed for the RC efficiency to understand the effect of the factors. The results show that the diameter of suction nozzles Dn has an essential effect on the RC performance of the drill bit. An ideal combination is Dn = 20 mm, L = 50 mm, N = 3, Dg = 50 mm, and θs = 35°, θd = 10°, which was obtained through variance analysis and validated via CFD simulation for higher efficiency. To verify its real performance, a large-diameter RC drill bit with a diameter of 1.2 m was manufactured and tested in the field. The result demonstrated that the drill bit had excellent cutting transport and reverse circulation performance.

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Investigation on the cuttings carrying capacity of a novel retractable drill bit used in casing while drilling with air reverse circulation

Cited by 8 publications

References 20 publications

Cloud inversion analysis of surrounding rock parameters for underground powerhouse based on PSO-BP optimized neural network and web technology

Cloud inversion analysis of surrounding rock parameters for underground powerhouse based on PSO-BP optimized neural network and web technology

Optimization Design of Mining Tri-cone Bit Air Nozzle by CFD

Optimum Design of Large-Diameter Reverse Circulation Drill Bit for Drilling Rescue Wells Using Orthogonal Experimental Method and CFD Simulation

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