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Geomechanical analysis of lost circulation control in tight formations
Unconventional oil and gas reservoirs, especially that in tight formations, contribute great parts to the global energy. During drilling in tight formations, lost circulation was one of the major problems, which can cause large amount of non operation ...
Yongle Ma, Lei Wan, Wei Hou, Qinze Xing
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Editorial: Lost circulation control during drilling and completion in complex formations
Chong Lin +3 more
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New Developments in the Control of Lost Circulation [PDF]
Abstract Laboratory and field tests were conducted for the purpose of improving techniques for the control of loss of circulation of drilling fluids and to determine some effects of lost circulation materials on drilling fluids and drilling rates.
P.P. Scott, J.L. Lummus
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An experimental evaluation method of drilling fluid lost control efficiency considering loss types
There are serious drilling fluid loss problems in fractured reservoirs during drilling and completion. Indoor evaluation of the drilling fluid lost control effect is an important basis for on-site plugging formula design, but there are some problems in ...
Jingyi Zhang +7 more
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Preparation and Performance of Resin-Gel–Rubber Expandable Lost Circulation Material Blend
Aiming at the complex strata, lost circulation often occurs. and lost circulation control becomes a difficult issue. A drilling fluid loss accident delays the drilling progress and even causes major economic losses.
Jinzhi Zhu +4 more
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Experimental Study, Characterization and Application of Starch-Graft-Acrylamide Gel for Plugging
During underbalance drilling, completion and workover wells, plugging channeling, blocking preformation and plugging formation water are inevitable problems. Gel is one of the most effective and convenient method to solve the problem.
Zhen LI +6 more
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Lost circulation control materials. Progress report [PDF]
Work in FY 94 continued to investigate the use of calcium phosphate cements as lost circulation control materials for geothermal wells. The calcium phosphate cements were produced by reacting calcium aluminate cement with sodium phosphate compounds. Pumpable formulations with thickening times up to two hours at temperatures between 25 to 90{degrees}C ...
Allan, M. L., Kukacka, L. E.
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Lost circulation pattern in the vug-fractured limestone formation
Due to numerous leakage zones, such as vugs, fractures, and caves appearing in carbonate rocks, lost circulation, the main issue, restricts safe and effective drilling.
Huiwen Pang +5 more
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Abstract The reverse circulation drilling method is now widely accepted as an effective way of exploration and grade control. However, the performance of reverse circulation drilling operations is greatly affected by the filtration effect (lost circulation) and no research has critically addressed this issue.
Chinedu J. Okere +4 more
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Lost circulation, the loss of drilling fluid into holes or fractures throughout the geological formations being drilled, is the most expensive problem encountered in drilling operations for oil and gas wells.
Mayssa N. Shehab +2 more
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