Modular coiled tubing and sectional pipe drilling rig

Abstract

A drilling rig for use in both coiled tubing injection and rigid threaded pipe operations, and consisting of a number of separably transportable modules which are assembled on site for carrying out the operations. Included in the modules are a substructure component, a mast component and an injector component. In setting up for operation, the mast component is combined on site with the substructure component which supports the assembled rig over the borehole. The mast component in location provides a loading area to support the injector component in a position for ready loading of an injector included in the injector component into the mast when required for a coiled tubing operation.

1 . A drilling rig for forming and servicing a borehole comprising:
 a first transportable module forming a substructure component including a framework base structure having a ground engaging lower portion for supporting said rig,   said framework base including a well head area with a vertical axis therein adjacent one end of said framework base for alignment with said borehole, and a bed area extending to an opposite end of said framework base;   a second separably transportable module forming a mast component of said drilling rig,   said mast component including a base portion and   a mast framework having a longitudinal central axis and being pivotally attached to said base portion for movement between a lowered position and a raised operative position,   said base portion of said mast component being shaped for reception in said bed of said substructure component of said first module and positioning said second module component for alignment of said mast framework in the raised position with said axis of said well area of said first substructure component, and   said base portion of said mast component defining an upper support area; and   a third separably transportable module forming an injector component,   said injector component comprising:   a tubing injector having attachment means for connection to said mast framework, and,   an injector carrier for positioning on said upper supporting area of said base portion of said mast component and supporting said injector in a location for connection of said tubing injector to said mast framework when said mast framework is in a lowered loading position to thereby allow the loading of said tubing injector into a working relation in said mast.   
   
   
       2 . A drilling rig as defined in  claim 1 , and further comprising a fourth module including a transport component carrying a coiled tube holding reel for placement juxtaposed said substructure component and mast component when assembled for supplying to and receiving from said tubing injector component the coiled tubing. 
   
   
       3 . A drilling rig as defined in  claim 2 , wherein said transport component includes a crane located rearwardly of said reel, said crane having an extendible boom for moving a free end of coiled tubing on said reel to said injector located on said injector carrier. 
   
   
       4 . A drilling rig as defined in  claim 1 , and further comprising a fifth independent transportable module comprising;
 a power pack component for positioning juxtaposed said second and fourth module for supplying power services thereto.   
   
   
       5 . A drilling rig as defined in  claim 1 , wherein said mast framework contains a top drive apparatus for vertical travel within a major length of said mast framework during pipe section drilling. 
   
   
       6 . A drilling rig as defined in  claim 5 , wherein said mast framework is formed of upper and lower sections wherein one of said sections is contained within the other, and further including drive means for raising said upper section to an extended operative position in a telescopic manner. 
   
   
       7 . A drilling rig as defined in  claim 6 , wherein said lower section of said framework is pivotally connected at its lower end to said base portion of said mast component, and
 said mast framework is provided with an open area for reception of said tubing injector when said top drive apparatus is parked above said open area.   
   
   
       8 . A drilling rig as defined in  claim 7 , wherein said tubing injector in a loading situation is horizontally disposed and located at least partially within said open area when said mast framework is in said lowered loading position. 
   
   
       9 . A drilling rig as defined in  claim 8  wherein said mast framework is extended when in said lowered loading position, whereby a working axis of said injector is angularly disposed relative to said center axis of the mast framework in said lowered loading position. 
   
   
       10 . A drilling rig as defined in  claim 9 , wherein said injector has laterally lock members relatively extendable for engagement with said mast framework for locating said injector in place for raising of said injector with said framework. 
   
   
       11 . A drilling rig as defined in  claim 10 , wherein said lock members hold said injector in an angular disposed position relative to said center axis of said mast framework at least during initially raising of said mast framework to a raised working position. 
   
   
       12 . A drilling rig as defined in  claim 11  and further comprising motor means for tilting said injector to a working condition within the open area wherein said working axis of said injector is aligned with said axis of said mast framework in its raised working position, said motor means being actuable to the return of said injector to said tilting position during return of said mast framework to its loading position.