DCDMA Standard Casing Tube
The drillingindustry relies heavily on the use of casing tubes to ensure the stability and integrity of boreholes. These tubes are essential for preventing the collapse of the hole walls and protecting the drilling equipment from damage. One widely recognized standard for casing tubes is the DCDMA (Drilling Contractors’ Association) standard. In this article, we will introduce the DCDMA Standard Casing Tube and discuss its importance in the drilling industry.
The DCDMA Standard Casing Tube is a set of specifications and guidelines developed by the Drilling Contractors’ Association to ensure the quality and performance of casing tubes used in drilling operations. These standards cover various aspects of casing tubes, including their dimensions, material properties, and manufacturing processes. By adhering to these standards, drilling contractors can ensure that the casing tubes they use meet the necessary requirements for safe and efficient drilling.
One of the key aspects of the DCDMA Standard Casing Tube is its dimensional specifications. These specifications define the outer diameter, inner diameter, and Wall thickness of the casing tubes. By standardizing these dimensions, the DCDMA ensures compatibility between differentmanufacturers and allows for easy interchangeability of casing tubes. This is particularly important in drilling operations where multiple sections of casing tubes may be used, as it allows for seamlessconnection and integration of the tubes.
Total range length, inclusive Permissible variation, max a
6.10 to 7.92 e
8.53 to 10.36
11.58 to 13.72 0.61
0.61
0.61
PUP JOINTS
Lengths: 0.61; 0.91; 1.22; 1.83; 2.44; 3.05 and 3.66 e
Tolerance: ±0.076
a Length variation applies to rail car shipment to the point of use and does not apply to order items of less than 18,144 kg of Pipe.
b By agreement between purchaser and manufacturer, the maximum length may be increased to 8.57 m.
c By agreement between purchaser and manufacturer, the maximum length may be increased to 10.76 m.
d By agreement between purchaser and manufacturer, the maximum length may be increased to 17.72 m.0.61 m pup joints may be furnished up to 0.91 m long by agreement between purchaser and manufacturer, and lengths other than those listed may be furnished by agreement between purchaser and manufacturer.
galvanizedastm a106/ API 5L/ ASTM A53 Seamless steel pipes and Tubes for Oil and gas Pipe LineIn addition to dimensional specifications, the DCDMA Standard Casing Tube also specifies the material properties of the tubes. These properties include the tensilestrength, yield