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..., installing tubing may promote severe slugging (SS) for a toe-up system. EOT located at kick-off point may be preferred as it showed the least test number of points with SS behavior. In addition, this location generated the lowest liquid holdup in the tubing and backpressure to the lateral section in most...

... floaters, the fluid return is aligned to a MPD manifold through the MPD Riser Package as Fig. 1 shows below. It enables to drill in a closing loop system and a backpressure is applied through chokes, controlling the pressure in the wellbore more precisely. The creation of a closed wellbore...

... conventional circulation methods as well as circulation through the MPD manifold ( Nas, 2010 ). Backpressure can be applied to the well at any time when the MPD manifold is being used. A gas influx is circulated out by using the MPD manifold and is vented through the mud gas separator. However, such "dynamic...

... The objective of this paper is to investigate experimentally and analytically the gas flow behavior under different backpressures in the core porous samples, which has not been observed by Klinkenberg before, and discuss it with the concept of gas transport mechanism; so that the backpressure...

... circulating a kick (influx) and using other unconventional drilling techniques will also be described. well control annular pressure drilling Upstream Oil & Gas underbalanced operation conference consideration fracture choke pore pressure backpressure wellbore valve circulation MPD high...

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... the automatic surface backpressure control of Managed Pressure Drilling (MPD) with continuous fluid circulation method (e-cd) has demonstrated a key impact during the first application in country. In 1998 an operator company drilled a well targeted to the Lower Cretaceous Goru and Sembar Sands as a primary...

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... different gases. Moreover, we show results are similar for both constant backpressure and constant mass flow rate test conditions. Finally, our study illustrates the importance of using a finite backpressure to reduce non-Darcy flow effects, particularly for ultra low-permeability samples. klinkenberg...

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... be the governing factor in deciding which method might be applied. The paper compares the production forecasts generated for the three forecasting methods referenced evaluating such parameters as reservoir permeability and geometry and the effect of changing backpressure and well spacing. An assessment...

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... fluids or simply by application of backpressure as occurs when a well is brought on to production. Residual formation damage is minimal. This behavior has been observed in laboratory-prepared fluids and in fluids obtained from the field. In the case of the latter it has been shown that improvements occur...

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... in the future. This assumption is often violated during the field operations due to a variety of circumstances. Two typical examples of such cases include: changes in the drainage area of a well. changes in the backpressure. Therefore, it becomes necessary to account for such variable conditions...

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