HORIZONTAL WELL DRILL-IN FLUIDS
Main objective of horizontal driling is to place a drain-hole for a long distance within the pay zone to enhance productivity or injectivity. In drilling horizontal wells, more serious problems appear than in drilling vertical wells. These problems are: poor hole cleaning, excessive torque and drag,...
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| Format: | Article |
| Language: | English |
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Faculty of Mining, Geology and Petroleum Engineering
1998-12-01
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| Series: | Rudarsko-geološko-naftni Zbornik |
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| Online Access: | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=20663&lang=en |
| Summary: | Main objective of horizontal driling is to place a drain-hole for a long distance within the pay zone to enhance productivity or injectivity. In drilling horizontal wells, more serious problems appear than in drilling vertical wells. These problems are: poor hole cleaning, excessive torque and drag, hole filling, pipe stucking, wellbore instability, loss of circulation, formation damage, poor cement job, and difficulties at logging jobs. From that reason, successful drilling and production of horizontal well depends largely on the fluid used during drilling and completion phases.
Several new fluids, that fulfill some or all of required properties (hole cleaning, cutting suspension, good lubrication, and relative low formation damage), are presented in this paper. |
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| ISSN: | 0353-4529 1849-0409 |