Experimental evaluation of surge/swab pressure in varying annular eccentricities using non-Newtonian fluid under Couette-Poiseuille flow for drilling applications

Krishna, Shwetank; Ridha, Syahrir; Campbell, Scott; Ilyas, Suhaib Umer; Dzulkarnain, Iskandar; Abdurrahman, Muslim

doi:10.1016/j.petrol.2021.108982

Cited by 9 publications

(3 citation statements)

References 26 publications

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“…Srivastav verified this rule later and developed a generic model to simulate the fluctuating pressure reduction caused by eccentricity via a concentric annulus modeling method [10]. As the research continues, more influence factors on surge/swab pressure have been taken into account, such as fluid compressibility, the elasticity of formation and drill string, axial vibration of the string, the effect of temperature on fluid rheology, and inflow of reservoir fluid, which improves the accuracy of model calculation [11,12]. Freddy presented a new steady-state model that can account for fluid and formation compressibility and pipe elasticity in H-B fluid [13].…”

Section: Introductionmentioning

confidence: 94%

Wellbore Pressure Modeling for Pumping and Tripping Simultaneously to Avoid Severe Pressure Swab

Sheng,

Zhang,

Tang

et al. 2023

Processes

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A pumping-while-tripping method is proposed to mitigate pressure swabs during tripping out in wells with a narrow mud density window and extended reach. In the proposed tripping-out process, the fluid circulation is started by using a special pump from a customized circulation line before tripping is initiated. During the tripping out, drilling fluid is circulated in the wellbore simultaneously while the drilling string is moving. A model to simulate the dynamic pressure changes in this process is developed based on the Navier–Stokes (N-S) equations and a damped free vibration system. The model was initially developed for Herschel–Bulkley (H-B) fluid; however, it can be applied to other fluid models by eliminating the non-existing terms. An analysis was conducted to investigate the effect of tripping velocity and circulation pumping rate on the pressure changes. The results show that pumping-while-tripping is effective in mitigating the pressure swab during tripping out, which is especially useful for extended-reach wells. It can also help to increase tripping out velocity and save tripping time for drilling operations.

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Section: Introductionmentioning

confidence: 94%

Wellbore Pressure Modeling for Pumping and Tripping Simultaneously to Avoid Severe Pressure Swab

Sheng,

Zhang,

Tang

et al. 2023

Processes

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“…Crespo et al [16] presented a new steady-state model for power-law fluids, which includes fluid and formation compressibility and pipe elasticity. Krishna et al [17] performed laboratory experiments to investigate the effect of centric and eccentric on the swab and surge pressure. This work confirms that in the investigation, swab and surge pressures are greatly affected by the tripping speed, mud properties, clearance between pipe and annular, and the eccentricity of the tube.…”

Section: Recent Workmentioning

confidence: 99%

“…A simple derivation of this flow rate will give the fluid flow acceleration in terms of measurable pipe acceleration and is given in Equation (17).…”

mentioning

confidence: 99%

Modeling of Swab and Surge Pressures: A Survey

Mohammad

Davidrajuh

2022

Applied Sciences

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Swab and surge pressure fluctuations are decisive during drilling for oil. The axial movement of the pipe in the wellbore causes pressure fluctuations in wellbore fluid; these pressure fluctuations can be either positive or negative, corresponding to the direction of the movement of the pipe. For example, if the drill string is lowering down in the borehole, the drop is positive (surge pressure), and if the drill string is pulling out of the hole, the drop is negative (swab pressure). The intensity of these pressure fluctuations depends on the speed of the lowering down (tripping in) or withdrawing the pipe out (tripping out). High tripping speed corresponds to higher pressure fluctuations and can lead to fracturing the well formation. Low tripping speed leads to a slow operation, causing non-productive time, thus increasing the overall well budget. Researchers used mathematical equations and physics to understand the phenomena and have provided many empirical, mathematical, and physics-based models. This paper starts with a literature study on the swab and surge pressures. After that, this paper concludes with a proposal for a new approach. The new approach proposes developing new models that are more robust, using field data, as we have access to field data from drilling operations. Research using field data would provide data-driven methodologies as new solutions for the rate of penetration, reservoir management, and drilling optimization. The expected outcome will improve the performance of the tripping in and tripping out process within drilling and well construction, and will further reduce the risk related to swab and surge pressures.

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Improved IMC for Pressure Control of Oil Wells During Drilling Modeled with an Integrative Term Under Time-Delay

Silva

Oliveira²,

Rosado³

et al. 2022

Proceedings of the 7th Brazilian Technology Symposium (BTSym’21)

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Experimental evaluation of surge/swab pressure in varying annular eccentricities using non-Newtonian fluid under Couette-Poiseuille flow for drilling applications

Cited by 9 publications

References 26 publications

Wellbore Pressure Modeling for Pumping and Tripping Simultaneously to Avoid Severe Pressure Swab

Wellbore Pressure Modeling for Pumping and Tripping Simultaneously to Avoid Severe Pressure Swab

Modeling of Swab and Surge Pressures: A Survey

Improved IMC for Pressure Control of Oil Wells During Drilling Modeled with an Integrative Term Under Time-Delay

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