Coiled Tubing Drilling (CTD) is a drilling method that combines
coiled tubing and
directional drilling
Directional drilling (or slant drilling) is the practice of drilling non-vertical bores. It can be broken down into four main groups: oilfield directional drilling, utility installation directional drilling, directional boring (horizontal dire ...
.
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 shale, underground
coal gasification Coal gasification is the process of producing syngas—a mixture consisting primarily of carbon monoxide (CO), hydrogen (H2), carbon dioxide (CO2), methane (CH4), and water vapour (H2O)—from coal and water, air and/or oxygen.
Historically, coal ...
and
coal bed methane
Coalbed methane (CBM or coal-bed methane), coalbed gas, coal seam gas (CSG), or coal-mine methane (CMM) 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, Au ...
.
See also
*
Bottom hole assembly
*
Underbalanced drilling
Underbalanced drilling, or 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 w ...
References
External links
ICoTA - Intervention & Coiled Tubing AssociationNOV - Coiled Tubing Drilling Equipment{Dead link, date=July 2020 , bot=InternetArchiveBot , fix-attempted=yes
Drilling technology