If offshore, rig is almost certainly a (a)   - MODU & floating, if in deep water.

drilled to develop an oilfield; Once a reservoir has been discovered – Drilling is required to produce oil or gas; Royalties are paid to the lease owners and taxes are paid to the government.

(a)  

Most versatile bottom supported rig; WD = 15’ to 550’ (depending on make and model); No Motion Compensator;

Can work over a multi-well platform if rig is “cantilever” type which most are; Requires good weather to move, but insensitive to weather when jacked up; Low cost: US $ 70K – 168K/day.

(a)  

Requires a pre-installed platform; Bottom supported (fixed) or buoyant (Tension Leg Platforms-TLP or Spar); Least weather sensitive of all offshore rigs, except when rigging up or rigging down; For bottom supported, the wells can be drilled before or after the legs are deployed; Good for Multi-well development because they typically cost less than Jack-ups; No motion compensator

(a)  

•Limited deck load capacity; WD:  1,500’ to 10,000’.

High Cost: US $ 200K to 450K/day; Can be Anchored or DP (Dynamic Positioned); Motion compensator; Less weather sensitive than a drill ship.

(a)  

(a)  

engine and chain drive transmission arrangement (compound drive) or “direct drive”

(a)  

DC; now AC is more common, requires “SCR” to deliver DC to motors; newest, AC w/freq. control

(a)  

Which would you expect to find on a very portable, truck mounted rig?

(a)  

Which would you expect to find on a very large, deepwater drill ship?

(a)  

to provide a means of lowering or raising drill strings, casing strings, and other subsurface equipment into or out of the hole.

(a)  

Needed to: Run in and pull-out drill string and bit i.e. ”making a trip”

Lower casing into well i.e.“run casing”

(a)  

When tripping or lifting heavy string to make a connection. (550 hp on 6000’ rigs to 3000 h.p. on big land rigs and 4000 h.p. on big, deepwater rigs).

(a)  

What happens when you bend a metal coat hanger back and forth? To avoid that it happens with the

drilling lines, we perform a:

(a)  

substitutes the function of swivel, kelly, rotate drive and rotary table.

(a)  

Drill by section; Reduced number of connections; Allows pull out of  string while  Circulating fluid and Rotating string; Essential when drilling Horizontal and/or Extended Reach wells

(a)  

(a)  

(a)  

(a)  

 Raise & lower tools in the hole; Landing string; Deliver mechanical energy; Deliver fluid to the bottom of the hole to:Clean the hole and Spot cement

(a)  

(a)  

(a)  

(a)  

(a)  

(a)  

(a)  

(a)  

(a)  

What are the tool joints?

(a)  

(a)  

(a)  

(a)