Coiled tubing drilling rig

A method of drilling a well using coiled tubing comprising the steps of:

• providing a rotary table over the well;
• providing a mast supporting a coiled tubing injector, said mast being normally aligned over the wellhead;
• pivoting said mast out of alignment with the wellhead;
• standing tubular sections on the rotary table to enable rotation of adjacent sections for making up a drilling assembly including a downhole motor and drill bit, using a crane supported on said mast, said drilling assembly being supported in the well using the rotary table;
• re-aligning the coiled tubing injector over the made up drilling assembly for injecting coiled tubing through the wellhead for connection to the drilling assembly;
• rotating the rotary table for rotating the drilling assembly supported on the rotary table to make up to the coiled tubing;
• and
• drilling the well through the rotary table.

Hybrid apparatus for operation with both coiled and sectional tubing apparatus comprising:

• a coiled tubing rig having a frame and a mast normally aligned over a wellhead, an injector located on the mast and a tubing straightener positioned between the injector and the wellhead;
• a rotary table affixed over the well head for rotationally supporting sectional tubular components passing through the wellhead;
• a jib crane mounted atop the mast;
• and
• means for pivoting the mast between two positions,
• (i) a first position where the mast, injector and straightener are aligned with the wellhead for injection and withdrawing of coiled tubing, and
• (ii) a second position with the mast pivoted out of alignment from the wellhead so that the jib crane can align sectional tubing with the wellhead and be supported therefrom and be made up on the rotary table.