{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T03:44:11Z","timestamp":1781754251383,"version":"3.54.5"},"reference-count":24,"publisher":"SPE","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,2,25]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>One of the primary functions of the drilling fluid is to transport cuttings from the bit to the surface. This transport is mainly a function of fluid properties (rheology and density), pump rate, wellbore trajectory and geometry, drillstring rotation and eccentricity. Because these interrelated parameters all have a significant effect on cuttings transport, it is important that hole cleaning modeling is comprehensive and inclusive to yield useful, reliable results. Inaccurate models that either do not consider significant effects or oversimplify them can lead to inadequate hole cleaning advice, resulting in non-productive and invisible lost time.<\/jats:p>\n               <jats:p>A novel cuttings transport model that includes relevant effects such as pipe rotation, eccentricity and the annular blockage is presented. Local velocity profiles are calculated for a given fluid and compared against the local critical velocity for cuttings transport. Then, the location and the magnitude of annulus blockage are numerically assessed. After an annulus becomes partially blocked with cuttings deposited in a cuttings bed, continuity and momentum equations are solved for the blocked annulus to estimate the new local velocities. The annulus is divided into small sections and the pressure profile is calculated with the progression of time. By doing so, a realistic representation of a wellbore's pressure and velocity profiles is obtained.<\/jats:p>\n               <jats:p>The results from this study are in very good agreement with large-scale flow loop experiments and field observations, e.g. showing that axial flow alone is not enough for effective hole cleaning in high deviation and horizontal wells. The simulations show that in such wells the cuttings tend to deposit even at elevated axial flow rates without pipe rotation in a fully eccentric annulus, due to a significantly reduced flow rate where the drillstring is close to the borehole or previous casing string. The results also provided a way to predict \"pack-off\" events, when the string can become stuck, the equivalent circulating density can spike, and lost circulation can occur. The non-uniform settling of the cuttings along the wellbore will cause non-uniform distribution of pressure losses, with local pressure spikes when cuttings blockage becomes substantial. A pack-off sensitivity analysis is presented in this work. The overall aim of this work is to provide more comprehensive cuttings transport modeling for the industry to conduct safe and improved hole cleaning operations.<\/jats:p>","DOI":"10.2118\/199587-ms","type":"proceedings-article","created":{"date-parts":[[2020,2,19]],"date-time":"2020-02-19T20:19:15Z","timestamp":1582143555000},"source":"Crossref","is-referenced-by-count":13,"title":["Modeling Cuttings Transport and Annular Pack-Off Using Local Fluid Velocities with the Effects of Drillstring Rotation and Eccentricity"],"prefix":"10.2118","author":[{"given":"Oney","family":"Erge","sequence":"additional","affiliation":[{"name":"The University of Texas at Austin"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric","family":"van Oort","sequence":"additional","affiliation":[{"name":"The University of Texas at Austin"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"861","published-online":{"date-parts":[[2020,2,25]]},"reference":[{"key":"2024102400273607100_R1","first-page":"191","article-title":"Advanced Wellbore Hydraulics.","volume-title":"Advanced Drilling and Well Technology","author":"Ahmed","year":"2009"},{"key":"2024102400273607100_R2","article-title":"Recommended Practice on the Rheology and Hydraulics of Oilwell Drilling Fluids","author":"API RP 13D","year":"2017","edition":"seventh"},{"issue":"1","key":"2024102400273607100_R3","doi-asserted-by":"crossref","first-page":"16","DOI":"10.2118\/19535-PA","article-title":"Correlations of Mud Rheological Properties with Cuttings-Transport Performance in Directional Drilling","volume":"6","author":"Becker","year":"1991","journal-title":"SPE Drill Eng"},{"key":"2024102400273607100_R4","article-title":"Use of a Transient Cuttings Transport Model in the Planning, Monitoring and Post Analysis of Complex Drilling Operations in the North Sea","author":"Cayeux","year":"2016","journal-title":"Society of Petroleum Engineers"},{"key":"2024102400273607100_R5","article-title":"Real-time Evaluation of Hole-Cleaning Conditions with a Transient Cuttings-Transport Model","author":"Cayeux","year":"2014","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R6","article-title":"Critical Conditions for Effective Sand-Sized Solids Transport in Horizontal and High-Angle Wells","author":"Duan","year":"2007","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R7","unstructured":"Erge, O.\n          \n          2013. Effect of Free Drillstring Rotation on Frictional Pressure Losses. University of Tulsa, M.S. Thesis."},{"key":"2024102400273607100_R8","article-title":"CFD Analysis and Model Comparison of Annular Frictional Pressure Losses while Circulating Yield Power Law Fluids","author":"Erge","year":"2015","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R9","article-title":"Improved ECD Prediction and Management in Horizontal and Extended Reach Wells with Eccentric Drillstrings","author":"Erge","year":"2016","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R10","article-title":"Non-Newtonian Fluid Flow in Eccentric Annuli and Its Application to Petroleum Engineering Problems","author":"Haciislamoglu","year":"1989"},{"key":"2024102400273607100_R11","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1007\/BF01432034","article-title":"Konsistenzmessungen von Gummi-Benzollosungen","volume":"39","author":"Herschel","year":"1926","journal-title":"Kolloid Z."},{"key":"2024102400273607100_R12","article-title":"Drilling Design and Implementation for Extended Reach and Complex Wells","author":"Krepp","year":"2003"},{"key":"2024102400273607100_R13","article-title":"Flow of Non-Newtonian Fluids through Eccentric Annuli","author":"Luo","year":"1990","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R14","article-title":"Advanced Cuttings Transport Study","author":"Miska","year":"2004","journal-title":"United States: N. p. Web."},{"key":"2024102400273607100_R15","doi-asserted-by":"crossref","DOI":"10.2118\/9781555632076","article-title":"Fundamentals of Drilling Engineering","volume-title":"SPE Textbook Series No. 12","author":"Mitchell","year":"2011"},{"key":"2024102400273607100_R16","article-title":"Simulating Transient Behavior of Cuttings Transport over Whole Trajectory of Extended Reach Well","author":"Naganawa","year":"2006","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R17","article-title":"Cuttings Transport Simulation Combined with Large-Scale Flow Loop Experiment and LWD Data Enables Appropriate ECD Management and Hole Cleaning Evaluation in Extended-Reach Drilling","author":"Naganawa","year":"2014","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R18","article-title":"Modeling of Cuttings Lag Distribution in Directional Drilling to Evaluate Depth Resolution of Mud Logging","author":"Naganawa","year":"2018","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R19","article-title":"Hole Cleaning Study in Mud Cap Drilling Operation Under Loss and Influx Situation Coincident with Borehole Enlargement","author":"Naganawa","year":"2018","journal-title":"Society of Petroleum Engineers."},{"key":"2024102400273607100_R20","article-title":"Cuttings Transport with Foam in Horizontal and Highly Inclined Wellbores","author":"Ozbayoglu","year":"2002"},{"key":"2024102400273607100_R21","article-title":"Estimating Critical Velocity to Prevent Bed Development for Horizontal-Inclined Wellbores","author":"Ozbayoglu","year":"2007","journal-title":"Society of Petroleum Engineers."},{"issue":"6","key":"2024102400273607100_R22","doi-asserted-by":"crossref","first-page":"594","DOI":"10.1080\/10916460903070181","article-title":"Critical Fluid Velocities for Removing Cuttings Bed Inside Horizontal and Deviated Wells","volume":"28","author":"Ozbayoglu","year":"2010","journal-title":"Petroleum Science and Technology"},{"key":"2024102400273607100_R23","first-page":"111","article-title":"Carrying Capacity of Drilling Muds","volume":"192","author":"Williams","year":"1951","journal-title":"Trans., AIME"},{"issue":"6","key":"2024102400273607100_R24","doi-asserted-by":"crossref","first-page":"064502","DOI":"10.1115\/1.4030845","article-title":"Pressure Profile in Annulus: Solids Play a Significant Role","volume":"137","author":"Zhang","year":"2015","journal-title":"ASME. J. Energy Resour. Technol."}],"event":{"name":"IADC\/SPE International Drilling Conference and Exhibition","location":"Galveston, Texas, USA","acronym":"20DC","start":{"date-parts":[[2020,3,3]]},"end":{"date-parts":[[2020,3,5]]}},"container-title":["IADC\/SPE International Drilling Conference and Exhibition"],"original-title":[],"link":[{"URL":"https:\/\/onepetro.org\/SPEDC\/proceedings-pdf\/doi\/10.2118\/199587-MS\/3798947\/spe-199587-ms.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/onepetro.org\/SPEDC\/proceedings-pdf\/doi\/10.2118\/199587-MS\/3798947\/spe-199587-ms.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,10,24]],"date-time":"2024-10-24T00:27:48Z","timestamp":1729729668000},"score":1,"resource":{"primary":{"URL":"https:\/\/onepetro.org\/SPEDC\/proceedings\/20DC\/20DC\/D101S019R004\/447250"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,2,25]]},"references-count":24,"URL":"https:\/\/doi.org\/10.2118\/199587-ms","relation":{},"subject":[],"published":{"date-parts":[[2020,2,25]]},"article-number":"D101S019R004"}}