Drill Pipe Rotation Effects on Frictional Pressure Losses in Slim Annuli

Hansen, Svein; Sterri, N.

doi:10.2118/30488-ms

Cited by 25 publications

(11 citation statements)

References 13 publications

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“…Hansen et al (1999) and Sterri et al (2000) observed that pressure drop increases with the increase in drill string rotation while the reverse behavior was reported by Hansen and Sterri (1995). In our case, we observed an increase in the pressure drop with the increase of drill string rotational speed, which is in accordance with most field observations.…”

Section: Momentum Balance Givessupporting

confidence: 91%

Hole-cleaning performance comparison of oil-based and water-based drilling fluids

Sayindla

Lund

Ytrehus

et al. 2017

Journal of Petroleum Science and Engineering

103

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Cuttings transport is a topic of great interest in the oil and gas drilling industry. Insufficient cuttings transport leads to several expensive problems. Knowledge and selection of the drilling fluids is one of the important factor for efficient hole cleaning. It has been observed, however, that the hole cleaning performance of drilling fluids can be different even if the fluid rheological properties are similar as measured in accordance with API specifications. The reasons for stated difference in the behavior of drilling fluids are not well understood. The main objective of present work is to evaluate hole cleaning efficiency of an oil-based drilling fluid (OBM) and a water-based drilling fluid (WBM) whose viscosity profiles are similar as per API specifications.Hole cleaning efficiency of an oil-based drilling fluid and a water-based drilling fluid whose rheological properties are similar was investigated. The fluids tested were industrial fluids used in the field and were sent to us after reconditioning. Experimental studies were performed on an advanced purpose-built flow-loop by varying flow velocities and drill string rotation rates. The flow loop had a 10 m long annulus section with 4" inner diameter wellbore and 2" outer diameter fully eccentric drill string. Pressure drop and sand holdup measurements were reported. Rheological investigations of the same fluids were used to understand the difference in the behavior of the drilling fluids tested. Higher pressure drop was observed for WBM compared to OBM, and for both fluids, the pressure drop increased with drill string rotation speed. In case of no drill string rotation, better hole cleaning performance was observed with the oil-based fluid compared to the water-based fluid. With the presence of drill string rotation, hole cleaning performance of both the fluids was nearly the same.

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Section: Momentum Balance Givessupporting

confidence: 91%

Hole-cleaning performance comparison of oil-based and water-based drilling fluids

Sayindla

Lund

Ytrehus

et al. 2017

Journal of Petroleum Science and Engineering

103

View full text Add to dashboard Cite

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“…Numerous laboratory studies (Nouri and Whitelaw 1994;Hansen and Sterri 1995;Hansen et al 1999;Ahmed and Miska 2008;Yamada 1962;Walker and Al-Rawi 1970;Wei 1997;Woo et al 2005) were carried out to evaluate the effect of pipe rotation on annular pressure loss. Most of these studies demonstrate both negative and positive effects of the rotation speed.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Aqueous solution of Glycerol (Newtonian) and 0.2% aqueous solution of CMC (power-law fluid) were used in the experiments. A year later, another experimental study (Hansen and Sterri 1995) was undertaken to determine the effect of pipe rotation and pipe eccentricity on pressure losses in narrow annuli. The fluids used in this experiment were non-Newtonian and best fit the power law model.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Similar results were obtained from a more recent study (Hansen et al 1999) conducted by the same authors. Analogous to their previous study (Hansen and Sterri 1995), one of the main objectives of this experiment was to examine the effect of drillpipe rotation and pipe eccentricity on annular pressure loss. A series of tests were conducted using a 13-ft long narrow annular test section (2 x 1.75 ).…”

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of Drillstring Rotation on Equivalent Circulation Density: Modeling and Analysis of Field Measurements

Ahmed

Enfis

Kheir

et al. 2010

SPE Annual Technical Conference and Exhibition

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A number of field and laboratory studies have been carried out to accurately predict the effect of drillstring rotation on downhole pressure and equivalent circulating density (ECD). Field studies indicated that drillstring rotation often results in an increased ECD. This is in contradiction with the results obtained from number of laboratory studies and other field studies. Consequently, there is no comprehensive model that accounts for the effect drillstring rotation on wellbore hydraulics. Recently, simple empirical models have been developed based on field measurements alone. Although these models can be very useful as they are based on field measurements, they have no physical basis and are limited to specific ranges of field parameters.This article presents results of field studies and theoretical analysis conducted on the effect of drillstring rotation on wellbore hydraulics. Field measurements during actual drilling operation were obtained from four different wells. Key drilling parameters such as flow rate, drillstring rotation speed, rate of penetration, ECD and return density, were recorded as a function of measured depth.Selected published field measurements were analyzed systematically using dimensional analysis techniques. After correlating different dimensionless groups, a new semi-empirical model was developed. The model was rigorously tested for its accuracy. Model predictions were compared with new field measurements and predictions of an existing model. Model predictions show good agreement with field measurements. The new model exhibits appreciably better accuracy than the existing one.The model developed in this investigation is relevant to manage ECD in slim holes, deepwater wells, and extended-reach wells where the increased wellbore length results in excessive pressure loss and limits the operating window for bottom hole pressure. In deepwater applications, ECD management becomes critical due to the narrow operating window between the pore and fracture pressure gradients.

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“…They observed that for power-law fluids, when the flow regime is turbulent, the pressure loss increases with increasing pipe rotation, and when the flow regime is laminar, pressure drop decreases with increasing pipe rotation. Hansen and Sterri (4) experimentally investigated the effect of rotation on the frictional pressure loss in an annulus. Results indicated that pipe rotation increases the frictional pressure loss for low-viscosity fluids and decreases frictional pressure for high-viscosity shear thinning fluids.…”

Section: Introductionmentioning

confidence: 99%

Frictional Pressure Loss Estimation of Non-Newtonian Fluids in Realistic Annulus With Pipe Rotation

Ozbayoglu

Sorgun

2010

Journal of Canadian Petroleum Technology

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Summary The annular frictional performance of non-Newtonian fluids is among the major considerations during development of hydraulic programs for drilling operations. Proper estimation of the frictional pressure losses become more critical when determining hydraulic horsepower requirements and selecting proper mud pump systems to foresee any serious problems that might occur with hydraulics during drilling operations. Because the rheological behaviour of the non-Newtonian fluids is known to be challenging, it becomes even more complicated during pipe rotation, especially in eccentric wellbores. In many cases, significant differences are observed when theoretical calculations and measurements for pressure losses are compared. This study aims to develop correction factors for determining the frictional pressure losses accurately in eccentric horizontal annulus for non-Newtonian fluid, including the effect of pipe rotation. Extensive experimental work has been conducted on METU-PETE Flow Loop for numerous non-Newtonian drilling fluids, including KCl-polymer muds and PAC systems for different flow rates and pipe rotation speeds, and frictional pressure losses are recorded during each test. Rheological characteristics of the drilling fluids are determined using a rotational viscometer. Observations showed that pipe rotation has a significant influence on frictional pressure loss, especially at lower flow rates. Up to a point, as the pipe rotation increases, the frictional pressure losses also increase. As the flow rates are increased, the effect of pipe rotation on frictional pressure losses diminishes. Also, after a certain pipe rotation speed, no additional contribution of pipe rotation on frictional pressure loss is observed. When the developed friction factors are used, there is a good agreement between the calculated and observed frictional pressure losses for any pipe rotation speed.

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Drill Pipe Rotation Effects on Frictional Pressure Losses in Slim Annuli

Cited by 25 publications

References 13 publications

Hole-cleaning performance comparison of oil-based and water-based drilling fluids

Hole-cleaning performance comparison of oil-based and water-based drilling fluids

The Effect of Drillstring Rotation on Equivalent Circulation Density: Modeling and Analysis of Field Measurements

Frictional Pressure Loss Estimation of Non-Newtonian Fluids in Realistic Annulus With Pipe Rotation

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