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Plug and Abandon the Well

Illustrated Glossary
Drilling Rig Components Click on the name below or a number on the graphic to see a definition and a more detailedphoto of the object. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. Crown Block and Water Table Catline Boom and Hoist Line Drilling Line Monkeyboard Traveling Block Top Drive Mast Drill Pipe Doghouse Blowout Preventer Water Tank Electric Cable Tray Engine Generator Sets Fuel Tank Electrical Control House Mud Pumps Bulk Mud Component Tanks Mud Tanks(Pits) Reserve Pit Mud-Gas Separator Shale Shakers Choke Manifold Pipe Ramp Pipe Racks Accumulator

Additional rig components not illustrated at right. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. Annulus Brake Casing Head Cathead Catwalk Cellar Conductor Pipe Degasser Desander Desilter Drawworks

Equipment used in drilling

48. 49. 50.

Ram BOP Rathole Rotary Hose

37. 38. 39. 40. 41. 42.43. 44. 45. 46. 47.

Drill Bit Drill Collars Driller's Console Elevators Hoisting Line Hook Kelly Kelly Bushing Kelly Spinner Mousehole Mud Return Line

51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61.

Rotary Table Slips Spinning chain Stairways Standpipe Surface Casing Substructure Swivel Tongs Walkways Weight Indicator

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U.S. Department of Labor
Occupational Safety & Health Administration
[skip navigational links]

Search

Advanced Search

| A-Z Index

Home

General Safety

Site Preparation

Drilling

Well Completion

Servicing

Plug and Abandon the Well

Illustrated Glossary

Accumulator The storage device for nitrogenpressurized hydraulic fluid, which is used in operating the blowout preventers.

Annular Blowout Preventer A large valve, usually installed above the ram preventers, that forms a seal in the annular space between the pipe and well bore. If no pipe is present, it forms a seal on the well bore itself.

Annulus The space around a pipe in a well bore, the outer wall of which may be the wall of either thebore hole or the casing; sometimes termed the annular space.

Blowout Preventer A large valve, usually installed above the ram preventers, that forms a seal in the annular space between the pipe and well bore or, if no pipe is present, on the well bore itself.

Brake The braking device on the drawworks to stop a load being lifted.

Bulk Mud Components in Storage Hopper type tanks for storageof drilling fluid components.

Casing Head A heavy, flanged steel fitting connected to the first string of casing. It provides a housing for slips and packing assemblies, allows suspension of intermediate and production strings of casing, and supplies the means for the annulus to be sealed off. Also called a spool.

Cathead A spool-shaped attachment on a winch around which rope for hoistingand pulling is wound.

Catline Boom and Hoist Line A structural framework erected near the top of the derrick for lifting material.

Catwalk The ramp at the side of the drilling rig where pipe is laid to be lifted to the derrick floor by the catline or by an air hoist.

Cellar A pit in the ground to provide additional height between the rig floor and the well head to accommodate the...