To ensure safer drilling and to prevent kicks and blowouts, Managed Pressure Drilling (MPD) technology has been proposed. However, conventional MPD necessitates manual operation of the choke within the choke manifolds by engineers, a task heavily reliant on their experience. This paper proposes a PID controller tuned using the Dung Beetle Optimizer (DBO) and details several laboratory experiments on automatic choke control utilising DBO-PID alongside a modified hydraulic control box. The experimental results demonstrate that DBO-PID can quickly and stably control the surface back pressure (SBP) to the desired level. Following extensive laboratory experiments validation, a field experiment implementing DBO-PID with a hydraulic control box was conducted on an offshore platform. The field experiment results indicate that DBO-PID is 29 % faster than manual control by an engineer in stabilising the SBP, with an overshoot of less than 4 % when nearing the target SBP. Additionally, during the control processes for both constant and variably targeted SBP, pressure fluctuation was 72 % and 63 % less, respectively, compared to manual operation. Both laboratory and field experiments have conclusively demonstrated that the automatic choke control system, comprising DBO-PID and a hydraulic control box, can efficiently manage SBP, thereby preventing kicks and blowouts. Furthermore, this system could replace manual operations in MPD, enhancing the safety of oil and gas resource development, protecting engineers' lives, and safeguarding the natural environment.

中文翻译：

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基于蜣螂优化器-PID控制器的表面背压自动控制方法与实验


为了确保更安全的钻孔并防止踢击和井喷，已经提出了管理压力钻孔 （MPD） 技术。然而，传统的 MPD 需要工程师手动操作扼流圈歧管内的扼流圈，这项任务在很大程度上依赖于他们的经验。本文提出了一种使用蜣螂优化器 （DBO） 进行调谐的 PID 控制器，并详细介绍了使用 DBO-PID 和改进的液压控制箱进行自动扼流控制的几个实验室实验。实验结果表明，DBO-PID 可以快速稳定地将表面背压 （SBP） 控制到所需的水平。经过广泛的实验室实验验证，在海上平台上进行了实施带有液压控制箱的 DBO-PID 的现场实验。现场实验结果表明，DBO-PID 在稳定 SBP 方面比工程师手动控制快 29%，当接近目标 SBP 时，超调小于 4%。此外，在恒定和可变目标 SBP 的控制过程中，与手动操作相比，压力波动分别减少了 72 % 和 63 %。实验室和现场实验都最终证明，由 DBO-PID 和液压控制箱组成的自动节流控制系统可以有效地管理 SBP，从而防止踢出和爆裂。此外，该系统可以取代 MPD 中的人工操作，提高油气资源开发的安全性，保护工程师的生命，保护自然环境。