Compressible darts and methods for using these darts in subterranean wells
作者： David D. Szarka
DOI:
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摘要: The present invention relates generally to subterranean well construction, and more particularly, improved darts methods of using these in wells. In one embodiment, the provides a dart for activating plug located within bore, comprising mandrel (10), and, foam body (13) attached mandrel. Optionally, an elastic tether (12) can be included, inter alia, absorb deformation body.
lens.org 参考文章(8)
Palathinkara S. Vinod, Roger J. Card, Mathew M. Samuel, Frank F. Chang, Dean M. Willberg, J. Ernest Brown, Methods for limiting the inflow of formation water and for stimulating subterranean formations ,(1997)
Henry E. Rogers, Earl D. Webb, Michael Dodson, Frank Acosta, David D. Szarka, Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring ,(2002)
Britt O. Braddick, Single plug arrangement, lock therefor and method of use ,(1990)
Jack E. Miller, Jerry P. Allamon, Pumpdown valve plug assembly for liner cementing system ,(2001)
John C. North, Primary well cementing methods and apparatus ,(1997)
Steven P. Hanson, Robert E. Smathers, Howard J. Morrison, Toy vehicle and launcher ,(1980)
Brahmadeo T. Dewprashad, Philip D. Nguyen, Kirk L. Schreiner, Ronald D. Dusterhoft, Completing unconsolidated subterranean producing zones ,(2001)
Pat M. White, James D. Ogden, Pipe wipers and cups therefor ,(1981)