Heavy Weight, DS-38 and XT-39
Strad sources the highest standard of drill pipe, ensuring that all safety, performance and connection requirements are successfully met.
Drill pipe comes in a variety of sizes and grades.
Double Shoulder™ (DS) Drill Pipe connections have significantly higher torsional capacity than the standard which is ideal for extended depth drilling. DS connections tolerate more OD wear and provide a versatile alternative to standard API connections where higher torsional strength is required. Even so, DS connections are interchangeable with API.
The double-shouldered design provides a secondary internal shoulder on the nose of the pin providing an additional friction surface and mechanical stop.
The Extreme Torque (XT) connection is a patented, high-performance, rotary shouldered connection available in a variety of sizes.
The XT 39 torque connection incorporates a second-generation double-shouldered design. A secondary internal shoulder on the nose of the pin offers an additional friction surface and mechanical stop. The primary external shoulder still serves as the connection’s sealing surface. The XT’s advanced design incorporates an extended pin base, pin nose, and box counterbore.
The XT 39 connection offers significantly higher torsional capacity than standard connections providing the required torque needed for demanding drilling conditions.
Heavy weight drill pipe is most commonly used in the vertical section of the hole and provides weight on the bit for directional drilling, while maintaining more flexibility than a drill collar. Heavy weight is also known as hevi-wate or HWDP in the industry.
Heavy weight drill pipe has a "center upset", also known as wear pad, that increases tube life by protecting the tube from wearing on the outer diameter by keeping the tube away from the hole wall. It also reduces hole drag and differential sticking problems. The walls of heavy weight drill pipe are thicker and have longer upsets compared to conventional drill pipe, as well as being stronger with high tensile strength. There are a variety of specifications of heavy weight drill pipe.
Heavy weight drill pipe (HWDP) may be used to make the transition between the drill collars and drill pipe. The function of the HWDP is to provide a flexible transition between the drill collars and the drill pipe. This helps to reduce the number of fatigue failures seen directly above the BHA.
XT 39 Features
XT 39 Drill pipe meets the requirements of the most extreme drilling applications: extended reach drilling (ERD), horizontal drilling, deep water, high temperature, high pressure (HTHP) and ultra-deep wells.
Drill Pipe Advantages
Strad offers premium equipment with prompt and efficient customer service.
New and used drill pipe is also available for purchase from Strad.
|4" SS - 105 grade drill pipe with 4" Tube OD (outer diameter) and Grant Prideco Double Shoulder (DS - 38) high torque connection, 15.70 lbs/ft (23.39 kg/m). 5" OD tool joint, 2 9/16" ID (inner diameter).|
|3½" CYX 95 (controlled yield X - 95) grade drill pipe with 3½" IF (NC - 38) connection, 15.50 lbs/ft (23.09 kg/m). 5" OD on tool joint; 2⅞" ID (inner diameter).|
|XT offers premium connection, high torque drill pipe|
|4⅞" OD tool joint makes the pipe fishable in small casing|
|Heavy Weight Specifications|
|4" Heavy weight drill pipe with 4" Full Hole (FH) (NC-40) Connection (5¼" OD)|
|4" Heavy weight drill pipe with 4" Double Shoulder (DS-38) Connection (5" OD)|
|4" Heavy weight drill pipe with a 4" XT-39 premium connection (4⅞" OD)|
|4½" Heavy weight drill pipe with 4½" Extra Hole (XH) (NC-46) Connection (6¼" OD)|
|5" Heavy weight drill pipe with 5" Extra Hole (XH) (4½" IF NC-50) Connection (6½" OD)|