Top mounted injector for coiled tubing injection

Abstract

A tubing injector unit for use in inserting and withdrawing coiled tubing from a well bore hole having in its structure a tubing injector component, a gooseneck component and a mounting component for connection of the overall unit to a supporting structure such as a mast. The mounting component has an upper area for carrying the gooseneck component thereon and a lower underside area forming an injector component supporting structure. The unit in operation thereby supports the injector component in a suspended condition beneath the mounting component so that the working forces which develop in inserting and withdrawing tubing in a bore hole are transferred separately to the mounting component by the injector component and the gooseneck component and thus directly to the supporting structure by the mounting component.

1 . An injector assembly of a type mountable in a support system above a well head for use in inserting and withdrawing coiled tubing in relation to a well bore hole; said injector assembly comprising:
 an injector component containing drive means engageable with said tubing for forcing said tubing therethrough in upward or downward directions,   a mounting component engageable with said support system for holding said injector component in an operable position suspended therefrom below said mounting component above said bore hole,   said mounting component including carrier means engageable with said support system for transferring to said support system the forces transferred to said mounting component from said injector component during the injection and withdrawal of said tubing by said injector component.   
   
   
       2 . An injector assembly as defined in  claim 1  wherein said mounting component includes a framework body providing mounting means for supporting thereon a gooseneck assembly above said injector component. 
   
   
       3 . An injector assembly as defined in  claim 2 , and further comprising load cell means in said framework body for providing data relating to external forces encountered in said injector component and thus transferred to said framework body of said mounting component in the operation of the injector component in forcing said tubing into and out of said well borehole. 
   
   
       4 . An injector system as defined in  claim 2 , and wherein said support system includes a mast, said framework body of said mounting component being carried within said mast for transferring to said mast all forces transferred thereto from said injector component and said gooseneck. 
   
   
       5 . An injector assembly as defined in  claim 4 , wherein said injector component includes a lower end portion spaced below said mounting component, and further comprising:
 a laterally projecting work platform carried at said lower end of said injector component for positioning within said mast.   
   
   
       6 . An injector structure of the type mountable in a support structure above a well head for use in inserting and withdrawing operations of coiled tubing in relation to a well bore hole;
 a mounting component for location in a working position on said support structure,   a tubular injection component containing drive means engageable with the coiled tubing for forcing said tubing longitudinally in either direction in said well bore hole;   said injector component having a top portion providing upper connection means,   a gooseneck component for receiving said coiled tubing from a storage reel and directing said tubing from the storage reel to said drive means of said injection component during the inserting operation or receiving said tubing from said injector component and directing said coiled tubing to the storage reel during the withdrawal operation,   said gooseneck component having a mounting base providing lower connecting means,   said mounting component having an upper surface area for engagement with said mounting base of said gooseneck component and including attachment means interacting with said connection means of said gooseneck component so as to support said gooseneck thereabove,   said mounting component further having an underside providing inter-locking means engaging said upper connection means of said injection component for thereby suspending said injection component thereunder,   said mounting component being thereby disposed between the top portion of said injector component and said mounting base of said gooseneck component;   whereby during operation of said injector all forces developed in said injection component and said gooseneck component are transferred to said supporting structure through said mounting component.   
   
   
       7 . An injector assembly as defined in  claim 6 , wherein said injector component includes a lower end portion spaced below said mounting component, and further comprising:
 a laterally projecting work platform carried at said lower end of said injector component for positioning within said mast.