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- W2393145614 abstract "In order to give full play to the advantages of underbalanced drilling,gel valve technology is gradually being applied to the whole underbalanced drilling process.With the further extension of oil exploration and development,there will be much more deep well operations,and high temperature has demanded more of the application of gel valve technology,while the current commonly used gel valve technology is difficult to meet the requirements of high temperature operation in deep wells.Gel developed in this paper,through the crosslinking reaction under high temperature,forms strong chemical bonds of space network structure to achieve the packer pressure strength requirements.Through gel performance evaluation such as the temperature resistance,sealing property,pressure resistance and gel breaking property etc.,it was found that the formula can resist temperature up to 160 ℃,and the gel has good adhesion with the casing wall,therefore it can effectively seal downhole pressure,and high pressure resistant performance.Moreover,it has a complete rupture of gel,which is easy to flow back,and does not affect the subsequent normal drilling and completion operations.Field application shows that the technique can effectively packer the influx of gas caused by underground underbalance,and with good results." @default.
- W2393145614 created "2016-06-24" @default.
- W2393145614 creator A5030205814 @default.
- W2393145614 date "2015-01-01" @default.
- W2393145614 modified "2023-09-28" @default.
- W2393145614 title "Research and application of gel valve with high temperature resistance and high strength used for underbalance drilling" @default.
- W2393145614 hasPublicationYear "2015" @default.
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