Pressure regulation with kick attenuation in a managed pressure drilling system

Zhou, Jing; Stamnes, Ovind Nistad; Aamo, Ole Morten; Kaasa, Glenn-Ole

doi:10.1109/cdc.2009.5400792

Cited by 23 publications

(9 citation statements)

References 18 publications

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“…In part 2 of this paper, the appropriate model is presented for the estimated observer, and in part 3 the base on the presented model, the comparison estimator and the observer are obtained. Finally, in part 4, the estimator in the MATLAB environment and Simulink is applied to utilize the data in [4], and [5] is obtained from a well located in the Grane field in the North Sea.…”

Section: Resultsmentioning

confidence: 99%

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The Estimated Formation Pressure During Drilling Operations, in Drilling Wells, and an Exploration of Steps towards Efficient Drilling

Imanian¹

2012

IJCA

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Application of estimation and monitoring in drilling industry has found a widespread attention among researchers. One of the main areas relates to the efficient supervision and control of drilling operations. For instance , during drilling oil wells , a fluid is pumped into drill string. This fluid is circulated through drill pipe and drill bit to bottom of the well and then is directed to the surface via annulus to transfer cutting material , meanwhile , cooling and lubricating the drilling devices located at the bottom of well. This causes the pressure between the drilling fluid and formation to be varied , leading to kick phenomenon and ultimately resulting into probable blow out if it is left uncontrolled. Therefore , estimation and monitoring of bottom hole pressure is treated as a necessary requirement during well drilling operations [2] , [3]. In this paper , we are interested to investigate the feasibility of using adaptive observer technique to realize monitoring of drilling operations in oil wells from the essential and critical operational problem views , being considered in the work. The resulting developed estimation and monitoring systems will be implemented and evaluated in simulation environment on the basis of accessible operational data from candidate oil wells.

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Section: Resultsmentioning

confidence: 99%

“…In this part, the simulation of the obtained estimator in part 2 is performed based on the data in [4] and [5] that is obtained from a real wellbore in the MATLAB environment and the Simulink. The estimated results and the variables are compared with the real data.…”

Section: The Simulation Of the Observer With Matlabmentioning

confidence: 99%

The Estimated Formation Pressure During Drilling Operations, in Drilling Wells, and an Exploration of Steps towards Efficient Drilling

Imanian¹

2012

IJCA

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“…PID control in the drilling process has been studied in Godhavn (2009), and Siahaan et al (2014). Based on the developed drilling model, the model-based control for drilling operation has been studied in Nygaard et al (2007), Carlsen et al (2008), Breyholtz et al (2009), Zhou et al (2009), , Nygaard (2011), Kaasa et al (2013). However, this method depends on the accuracy of the model and the complexity is increased by the fact that a large set of parameters in such models are uncertain or unknown and possibly changing.…”

Section: Introductionmentioning

confidence: 99%

Automated Kick Control Procedure for an Influx in Managed Pressure Drilling Operations

Zhou¹,

Gravdal²,

Strand³

et al. 2016

MIC

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Within drilling of oil and gas wells, the Managed Pressure Drilling (MPD) method with active control of wellbore pressure during drilling has partly evolved from conventional well control procedures. However, for MPD operations the instrumentation is typically more extensive compared to conventional drilling. Despite this, any influx of formation fluids (commonly known as a kick) during MPD operations is typically handled by conventional well control methods, at least if the kick is estimated to be larger than a threshold value. Conventional well control procedures rely on manual control of the blow out preventer, pumps, and choke valves and do not capitalize on the benefits from the instrumentation level associated with MPD. This paper investigates two alternative well control procedures specially adapted to backpressure MPD: the dynamic shut-in (DSI) procedure and the automatic kick control (AKC) procedure. Both methods capitalize on improvements in Pressure While Drilling (PWD) technology. A commercially available PWD tool buffers high-resolution pressure measurements, which can be used in an automated well control procedure. By using backpressure MPD, the choke valve opening is tuned automatically using a feedback-feedforward control method.The two procedures are evaluated using a high fidelity well flow model and cases from a North Sea drilling operation are simulated. The results show that using AKC procedure reduces the time needed to establish control of the well compared to DSI procedure. It also indicates that the AKC procedure reduces the total kick size compared to the DSI procedure, and thereby reduces the risk of lost circulation.

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“…Moreover, its measurement is sometimes not available when the circulation is low or during pipe connection. Therefore, considering the unreliable and partial unavailability of the BHP measurement, accurate estimation is a challenging problem (Zhou et al [2008a], Paasche et al [2011], Stamnes et al [2008], Zhou et al [2009Zhou et al [ , 2008b, Nygaard et al [2007c]).…”

Section: Introductionmentioning

confidence: 99%

“…For example, the use of low order models for estimation and control of the BHP can be founded in Nygaard et al [2007a,b]. More recently, a third-order managed pressure drilling (MPD) model developed by Kaasa [2007] is widely used to estimate the BHP, see Zhou et al [2008a], Paasche et al [2011], Stamnes et al [2008, Zhou et al [2009Zhou et al [ , 2008b, . In Zhou et al [2008a], Stamnes et al [2008 a nonlinear model-based adaptive observer to estimate the BHP with estimation of other parameters is employed.…”

Section: Introductionmentioning

confidence: 99%