Co-Current and Countercurrent Migration of Gas Kicks in “Horizontal” WellsSource: Journal of Energy Resources Technology:;1999:;volume( 121 ):;issue: 002::page 96DOI: 10.1115/1.2795075Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Results from experiments conducted in downward liquid-gas flows in inclined, eccentric annular pipes, with water and air as the working fluids, are presented. The gas was injected in the middle of the test section length. The operating window, in terms of liquid and gas superficial velocities, within which countercurrent gas flow occurs at two low-dip angles, has been determined experimentally. The countercurrent flow observed was in the slug regime, while the co-current one was stratified. Countercurrent flow fraction and void fraction measurements were carried out at various liquid superficial velocities and gas injection rates and correlated to visual observations through a full-scale transparent test section. Our results indicate that countercurrent flow can be easily generated at small downward dip angles, within the practical range of liquid superficial velocity for drilling operations. Such flow is also favored by low gas injection rates.
keyword(s): Flow (Dynamics) , Fluids , Wells , Measurement , Drilling , Gas flow , Pipes , Porosity , Slug , Transparency AND Water ,
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contributor author | H. Baca | |
contributor author | D. E. Nikitopoulos | |
contributor author | J. Smith | |
contributor author | A. T. Bourgoyne | |
date accessioned | 2017-05-08T23:59:27Z | |
date available | 2017-05-08T23:59:27Z | |
date copyright | June, 1999 | |
date issued | 1999 | |
identifier issn | 0195-0738 | |
identifier other | JERTD2-26482#96_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/122060 | |
description abstract | Results from experiments conducted in downward liquid-gas flows in inclined, eccentric annular pipes, with water and air as the working fluids, are presented. The gas was injected in the middle of the test section length. The operating window, in terms of liquid and gas superficial velocities, within which countercurrent gas flow occurs at two low-dip angles, has been determined experimentally. The countercurrent flow observed was in the slug regime, while the co-current one was stratified. Countercurrent flow fraction and void fraction measurements were carried out at various liquid superficial velocities and gas injection rates and correlated to visual observations through a full-scale transparent test section. Our results indicate that countercurrent flow can be easily generated at small downward dip angles, within the practical range of liquid superficial velocity for drilling operations. Such flow is also favored by low gas injection rates. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Co-Current and Countercurrent Migration of Gas Kicks in “Horizontal” Wells | |
type | Journal Paper | |
journal volume | 121 | |
journal issue | 2 | |
journal title | Journal of Energy Resources Technology | |
identifier doi | 10.1115/1.2795075 | |
journal fristpage | 96 | |
journal lastpage | 101 | |
identifier eissn | 1528-8994 | |
keywords | Flow (Dynamics) | |
keywords | Fluids | |
keywords | Wells | |
keywords | Measurement | |
keywords | Drilling | |
keywords | Gas flow | |
keywords | Pipes | |
keywords | Porosity | |
keywords | Slug | |
keywords | Transparency AND Water | |
tree | Journal of Energy Resources Technology:;1999:;volume( 121 ):;issue: 002 | |
contenttype | Fulltext |