MPD的某些系统侧重于对井涌的初始检测，而其他系统则侧重于PWD的相关性和压力。然而，所有的MPD系统都有一个关键的区别，那就是每个系统所取得的成就。MPD自动化现在已经成为一种不断发展的新技术。在MPD自动化操作过程中如何减少压力变化的研究是一个并行的研究(Breyholtz Nygaard和Siahaan 2010)。目前，MPD的控制系统主要是通过储层孔隙压力和裂缝起始压力，将压力维持在钻窗范围内。压力控制环空自动化系统的存在利用了具有伪实时的水力模型。这样做的目的是为了确定适当的背压，然后打开或关闭节流器，以限制油井的流量，同时确保保持背压。
Jon(2010)认为，MPD是一种基本的压力循环和封闭系统，有利于井筒压力的精确管理。Kohler(2009)提出，在开放系统中，钻井液管道向大气压力开放，而封闭系统中的钻井液在压力作用下流动(Couturier et al. 2015)。正如Kevin(2006)所暗示的，MPD利用的主要好处是通过控制背压而不是泥浆的赖特来动态地控制压力。该方法的定义是通过减少MPT，减轻钻井的危险，并允许在复杂的自然区域进行钻井，从而优化钻井过程。根据Mariam(2004)的研究，节流器内部的调整允许必和必拓内部快速方式的改变。
Certain systems of MPD have had a focus over initial detection of kicks while others have focused over PWD correlation and pressure. However, all the systems of MPD have both with the key distinction that lies within achievement made by each. MPD automation has now become a newer technology that evolves continuously. Research over the way in which pressure variation can be reduced during automated operations of MPD is a concurrent one (Breyholtz Nygaard and Siahaan 2010). Now, the control system of MPD is utilized for maintaining the BHP within a window of drilling bordered through the pore pressure of reservoir and its pressure for fracture initiation. Presence of annular automation systems with pressure control make use of a hydraulics model with pseudo real time. This is undertaken in order to determine the back pressure appropriately and then opening or closing a choke for restriction of flow from wells along with ensuring that the backpressure is maintained.
According to Jon (2010), MPD is at the basic level a pressurized circulation and closed system that facilitates wellbore profile of pressure’s precise management. As suggested by Kohler (2009), within the open system, the piping of drilling fluids are open to the pressure of atmosphere, while the drilling fluids within the closed system flow under the pressure (Couturier et al. 2015). The primary benefit of MPD utilization as implied by Kevin (2006), is the controlling ability of pressure in a dynamic manner through the manipulation of back pressure instead of the wright of mud. This approach is defined to optimize the process of drilling through the MPT reduction, mitigating of hazards of drilling and enabling the drilling across areas of complex nature. According to Mariam (2004), adjustment within the choke allow change of rapid manner within the BHP.