Nonlinear dynamic modeling and analysis of borehole propagation for directional drilling

Shakib, Mohammad Fahim; Detournay, Emmanuel; Wouw, Nathan van de

doi:10.1016/j.ijnonlinmec.2019.01.014

Cited by 17 publications

(3 citation statements)

References 34 publications

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“…Yang et al [10] established a simplified ROP model for soft coal seams to improve drilling efficiency. e results of Shakib et al [11] can be used to support the improved directional drilling system design. Jiang and Miao [12] analyzed the necessity and feasibility of the kilometer drill test in the Jinmei Group and its application prospect in gas development and control.…”

Section: Introductionmentioning

confidence: 91%

Study on Key Parameters of Directional Long Borehole Layout in High‐Gas Working Face

Yan

Wang

Fan

et al. 2021

Shock and Vibration

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This research aims to obtain a new way based on the directional long borehole layout to investigate the gas migration behavior of coal bed methane. In view of the study of the oil-type gas reservoir and the influence range of mining on the working face in the surrounding rock, the paper puts forward the optimization method of the directional long borehole layout of the surrounding rock and the method of the borehole layout with comprehensive consideration of the influence of mining on the failure of the roof and floor and the distribution of surrounding rock gas-bearing reservoirs. The test results showed that the layout horizon of the directional long boreholes is determined, and the layout was within the height range of 20–40 meters, clarified the relationship between the drainage data and the exposure level of the borehole and the layout of the borehole, compared the gas concentration in the upper corner of the working face before and after the drainage, and constructed a three-dimensional comprehensive drainage mode for the high-gassy working face, which provided a worth-promoting method that supports surrounding rock oil-type gas and gas treatment in the high-gas mining area.

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Section: Introductionmentioning

confidence: 91%

Study on Key Parameters of Directional Long Borehole Layout in High‐Gas Working Face

Yan

Wang

Fan

et al. 2021

Shock and Vibration

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“…China's high gas content and coal and gas outburst mines are numerous and widely distributed, totaling more than 3200, and mainly located in the southwest and central east of China. Using borehole to extract gas is the main way of underground gas disaster management and coal bed methane development in coal mines [5][6][7]. The use of boreholes for gas extraction has the advantages of flexible form, low cost, wide adaptability, and it can realize the advantages of simultaneous construction of boreholes and coal mine production, etc., and it has occupied the main mine gas extraction management mode in recent years [8,9].…”

Section: Introductionmentioning

confidence: 99%

Determination of Gas Extraction Borehole Parameters in Fractured Zone on ‘Borehole in Place of Roadway’ Based on RSM-GRA-GA

et al. 2022

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Large-diameter gas extraction borehole is considered an effective method by which to realize coal mine methane exploitation and outburst prevention. Efficient gas extraction can be achieved by selecting the right borehole parameters. In this paper, by comparing several conventional objective weighting methods, the PCA was used to assign the weights to the research indices, the optimization objective was reduced from multi-dimensional to one-dimensional with the help of the gray correlation analysis. The study of gas extraction effect under different borehole parameters based on the response surface model. Numerical simulations were used to analyze the mixed volume of gas extraction, the pure volume of extraction and the concentration in the upper corner after extraction under different schemes. Finally, a genetic algorithm degree model was used to solve the solution and determine the optimal arrangement of borehole parameters. The study shows that (1) the weight shares of borehole stratum, borehole diameter and borehole spacing were 0.385, 0.285 and 0.33, respectively, in the reduced dimensional analysis of the PCA. (2) Using the results of improved gray correlation analysis as a comprehensive evaluation value to measure the effect of gas extraction, the optimal range of the model was 28–30 m borehole level, 190–210 mm borehole diameter and 5.5–6.5 m borehole spacing. (3) Using the genetic algorithm to solve the model, we obtained the borehole layer 28.79 m, borehole diameter 199.89 mm, borehole spacing 5.76 m. The borehole gas extraction effect was good under this parameter. The extraction mixed volume was 129.8 m3/min, the extraction pure volume was 9.16 m3/min, the upper corner concentration was 0.52%, and the prediction accuracy of the model was 97.8%.

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“…However, these studies do not take into account the bit/rock interaction [12,13], which motivates some researchers to focus on the trajectory evolution based on the interaction, where some control methods were proposed [14,15]. But the transient behavior of physical borehole propagation was ignored in these results, and the essential delay characteristics of the borehole propagation dynamics were not captured by the proposed models [16,17]. Since the lithology of borehole affects the adjustment of drilling control strategy [18].…”

Section: Introductionmentioning

confidence: 99%

Observer‐based trajectory control for directional drilling process

Cai

Lai

et al. 2021

Asian Journal of Control

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This paper is concerned with observer-based trajectory control of directional drilling system with rotary steering devices. Since the trajectory orientation cannot be measured directly, most of the existing results implicitly assume that the trajectory orientation is equal to the measurement of orientation of the bottom hole assembly (BHA) or the drill bit, which would bring in certain control errors in practice. To avoid such control errors, in this paper, a trajectory control approach is established, which includes a state observer to estimate the trajectory orientation based on the measurement of the BHA orientation. Firstly, the relationship between the trajectory orientation and the BHA orientation is analyzed, and a trajectory evolution model is introduced according to the analysis. Secondly, based on this trajectory evolution model, a variable transformation technique is applied such that a trajectory tracking control problem is formulated. Thirdly, a feedback control strategy is devised based on the estimation of the trajectory orientation for trajectory tracking. Fourthly, stability analysis of the closed-loop system is discussed, and the design of the controller and state observer is done.

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Nonlinear dynamic modeling and analysis of borehole propagation for directional drilling

Cited by 17 publications

References 34 publications

Study on Key Parameters of Directional Long Borehole Layout in High‐Gas Working Face

Study on Key Parameters of Directional Long Borehole Layout in High‐Gas Working Face

Determination of Gas Extraction Borehole Parameters in Fractured Zone on ‘Borehole in Place of Roadway’ Based on RSM-GRA-GA

Observer‐based trajectory control for directional drilling process

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