Injection assembly

Details Injection assembly Injection assembly

E - Fixed Constructions

21

B

255/12, 166/52,

E21B 7/18 (2006.01) E21B 19/22 (2006.01)

Patent

CA 1096850

-15- "INJECTION ASSEMBLY" ABSTRACT OF THE DISCLOSURE A split-type injector for flexible drill tubing includes a pressure cylinder connected to linkage which main- tains an adjustable pressure of the injection dies upon the tubing passing therethrough. The individual dies on the end- less chain are constructed to grip components and tubing of different diameters which passes therethrough and also by means of a relief valve in the pressure system, to widen and close up as different diameter components or tubing pass therethrough. For example if a component such as a coupling is encountered, the halves of the injector move apart to allow it to pass yet at the same time maintain a similar con- tact upon the coupling and also be maintain similar pressure upon the coupling. When the component has passed, the halves close up and maintain the same pressure and substantial con- tact area upon the tubing as before.

325415

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