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A condition that may occur when a coiled tubing string is run into a horizontal or highly deviated wellbore. Lock -up occurs when the frictional force encountered by the string running on the wellbore tubular reaches a critical point.
1 de mar. de 1995 · The theory has been applied to survey data from a real horizontal well and it predicts that the well curvature substantially affects the critical force for helical buckling, and thereby also the maximum run-in length of coiled tubing. Criteria for operational limits, such as lock-up and tubing failure, are also discussed in the paper.
5 de abr. de 2024 · 1.1 origen del coiled tubing.....29 1.2 evoluciÓn de los equipos .....32 1.3 operaciones convencionales con coiled tubing .....35
19 de feb. de 2020 · Coiled Tubing Lockup: Coiled Tubing Lockup is a condition in which no coiled tubing forces or movement can be transmitted downhole. One benefit of coiled tubing over slickline/wireline...
The force needed to further push coiled tubing into a well increases dramatically once the coiled tubing is forced into a helix. The frictional drag developed as coiled tubing is forced against the hole or casing wall will ultimately overcome the pushing forces. This phenomena is called lock-up.
5 de abr. de 2013 · Coiled tubing string is proposed to drill HSW in gas hydrate reservoirs for increasing well productivity and reducing wellbore collapse problems.
20 de sept. de 2016 · The objective of this paper is to study the effects of boundary conditions, friction and angular inclination on the helical buckling of coiled tubing in an inclined wellbore. In this paper, a new theoretical model is established to describe the buckling behavior of coiled tubing.
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