Coiled Tubing Drilling (CTD) is a drilling method that combines
coiled tubing
In the oil and gas industry, coiled tubing refers to a long metal pipe, normally in diameter which is supplied spooled on a large reel. It is used for Well intervention, interventions in oil well, oil and gas wells and sometimes as production ...
and
directional drilling.
Drilling Market Focus: Coiled Tubing Use Growing Faster than Drilling Industry, The Oil and Gas Journal, 19 Sept 2005, Retrieved 30 July 2014 It uses a mud motor to create a system for reservoirs.
Niobrara Wells Prove BHA for Coiled Tubing, Drilling Contractor, 15 Mar 2012, Retrieved 30 July 2014
, Introduction to Coiled Tubing: Drilling Applications, ICoTA, Retrieved 29 July 2014
Operations
CTD has been used in regions such as Alaska, Canada, United Arab Emirates, Oman and Saudi Arabia. Typical applications include depleted wells,
unconventional gas
Unconventional (oil and gas) reservoirs, or unconventional resources (resource plays) are accumulations where oil and gas phases are tightly bound to the rock fabric by strong capillary forces, requiring specialized measures for evaluation and ...
shale, underground
coal gasification
In industrial chemistry, coal gasification is the process of producing syngas—a mixture consisting primarily of carbon monoxide (CO), hydrogen (), carbon dioxide (), methane (), and water vapour ()—from coal and water, air and/or oxygen.
H ...
and
coal bed methane
''Coalbed methane'' (CBM or coal-bed methane), coalbed gas, or coal seam gas (CSG) is a form of natural gas extracted from coal beds. In recent decades it has become an important source of energy in United States, Canada, Australia, and other co ...
.
See also
*
Bottom hole assembly A bottom hole assembly (BHA) is a component of a drilling rig. It is the lowest part of the drill string, extending from the bit to the drill pipe. The assembly can consist of drill collars, subs such as stabilisers, reamers, shocks, hole-openers, ...
*
Underbalanced drilling
Underbalanced drilling (UBD) is a procedure used to drill oil and gas wells where the pressure in the wellbore is kept lower than the static pressure of the formation being drilled. As the well is being drilled, formation fluid flows into the wel ...
References
External links
ICoTA - Intervention & Coiled Tubing AssociationNOV - Coiled Tubing Drilling Equipment{Dead link, date=July 2020 , bot=InternetArchiveBot , fix-attempted=yes
Drilling technology