Results 11 to 20 of about 89,974 (258)

Geomechanical analysis of lost circulation control in tight formations

open access: yesFrontiers in Earth Science
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
doaj   +2 more sources

Editorial: Lost circulation control during drilling and completion in complex formations

open access: yesFrontiers in Physics, 2023
Chong Lin   +3 more
doaj   +3 more sources

New Developments in the Control of Lost Circulation [PDF]

open access: yesFall Meeting of the Petroleum Branch of AIME, 1955
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
openaire   +1 more source

An experimental evaluation method of drilling fluid lost control efficiency considering loss types

open access: yesFrontiers in Physics, 2023
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
doaj   +1 more source

Preparation and Performance of Resin-Gel–Rubber Expandable Lost Circulation Material Blend

open access: yesGels, 2023
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
doaj   +1 more source

Experimental Study, Characterization and Application of Starch-Graft-Acrylamide Gel for Plugging

open access: yesMedžiagotyra, 2018
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
doaj   +1 more source

Lost circulation control materials. Progress report [PDF]

open access: yes, 1994
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.
openaire   +2 more sources

Lost circulation pattern in the vug-fractured limestone formation

open access: yesEnergy Reports, 2023
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
doaj   +1 more source

Lost Circulation Control for Pump-Injected Reverse Circulation Drilling: Experimental Optimization and Theoretical Analyses

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
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
openaire   +1 more source

The Impact of Drilling Operation Parameters on the Lost Circulation Problems for Oil and Gas Wells Based on Field Data

open access: yesTikrit Journal of Pure Science, 2023
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
doaj   +1 more source

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