Development of a Novel Hybrid-Type Rotary Steerable System for Directional Drilling

Kim, Jong‐Heon; Myung, Hyun

doi:10.1109/access.2017.2768389

Cited by 18 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Obviously, how to control the attitude of downhole tool for the track of the planned drilling trajectory plays an important role in directional drilling. With the development of rotary steering system (RSS) [3][4][5], real-time control of the downhole tool attitude becomes available. However, due to the factors like change of stratums and weighton-bit, the tracking error is unavoidably introduced and may lead to a spiral drilled trajectory along the planned one.…”

Section: Introductionmentioning

confidence: 99%

Observer‐based trajectory control for directional drilling process

Cai

Lai

et al. 2021

Asian Journal of Control

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Observer‐based trajectory control for directional drilling process

Cai

Lai

et al. 2021

Asian Journal of Control

View full text Add to dashboard Cite

show abstract

“…Kim J. [18] proposed a new hybrid rotary steering system aimed at the problem of uncontrollable borehole curvature in longdistance directional drilling. This system combines a traditional drill bit with a push bit and adopts a hybrid structure involving a hydraulic cylinder and spherical joint to achieve better maneuverability.…”

Section: Introductionmentioning

confidence: 99%

Position Deviation Control of Drilling Machine Using a Nonlinear Adaptive Backstepping Controller Based on a Disturbance Observer

Liu

2021

Processes

View full text Add to dashboard Cite

Thin coal seam mining is a development direction to solve the problem of energy supply at this stage, which cannot be realized by small working space, low automation, and drilling deviation. In this paper, a nonlinear adaptive backstepping controller based on a disturbance observer is proposed and used on a coal auger for position tracking control to achieve directional drilling. Firstly, a nonlinear dynamic model for the deflection control mechanism is built with the consideration of parameter uncertainties and external disturbances. Then, the parameter uncertainty and external disturbance are regarded as a system compound disturbance. Furthermore, a disturbance observer is designed to estimate the system compound disturbance and a nonlinear adaptive backstepping controller was proposed to compensate the system compound disturbance. The upper bound of the compound disturbance, which can effectively reduce the chattering in the directional control process, cannot be obtained easily. A stability analysis of the DCM (deviation control mechanism) with the proposed controller is proved based on the Lyapunov theory. Finally, an electro-hydraulic servo displacement control experimental system with matlab xPC target rapid prototyping technology and a prototype experiment system is established to verify the effectiveness of the proposed control strategy. The experimental results indicate that the proposed controller can yield more satisfactory position tracking performance, such as parameter uncertainties and external disturbances, than the conventional proportion integral derivative (PID) controller and an adaptive backstepping controller. Using the control strategy, technical breakthrough on horizontal directional drilling can be realized for thin coal seam mining.

show abstract

“…The steering accuracy of DPRSS is determined by the performance of the stabilized platform control system. However, the downhole disturbances, such as the load torque and the outer housing speed, create additional challenges to the controller design [3,[5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Toolface Control Method for a Dynamic Point-the-Bit Rotary Steerable Drilling System

et al. 2019

View full text Add to dashboard Cite

In the dynamic point-the-bit rotary steerable system (DPRSS), a high dynamic stiffness toolface control method is desired to ensure the stabilized platform traces the directional command accurately and quickly. A three-loop compound toolface control method using the Model-based Active Disturbance Rejection Control (MADRC) algorithm is presented, and a load torque estimator and an outer housing speed estimator are designed based on system model to obtain the external disturbances. The proposed toolface control method was verified by numerical simulation and DPRSS prototype testing, and its speed loop frequency responses are analyzed. The results reveal that this method is effective in disturbance rejection and robust against parameter uncertainties, and the MADRC shows better performance compared with the conventional ADRC and the proportional-integral (PI) controller. The proposed method has the potential to be used in harsh drilling conditions.

show abstract

Development of a Novel Hybrid-Type Rotary Steerable System for Directional Drilling

Cited by 18 publications

References 19 publications

Observer‐based trajectory control for directional drilling process

Observer‐based trajectory control for directional drilling process

Position Deviation Control of Drilling Machine Using a Nonlinear Adaptive Backstepping Controller Based on a Disturbance Observer

Toolface Control Method for a Dynamic Point-the-Bit Rotary Steerable Drilling System

Contact Info

Product

Resources

About