API Lifting Sub, Saver Sub, Straight Sub, Reduced Section Sub, Rotary Sub
Rotary Subs are made from AISI 4145H modified quenched and tempered material. In addition, it is designed and manufactured according to API specifications as well as with API monogram. They can be used to crossover from connection size to another or as a disposable component used to extend the connection life of a more expensive drill stem member.
A lift Sub enables safe and efficient handling of straight OD tubulars such as drill collars, shock tools, jars, directional equipment and other tools by using the drill pipe elevators.
When rods is added to increase the depth of drilling, the loosening of the threads are now performed at the bottom end of the Saver Sub as opposed to the bottom of the Kelly which is the most valuable part of the drill string. This means that the connection between the top end of the Saver sub and Kelly is seldom used, and suffers minimal wear and tear, whereas the lower connection is used in almost all cases displacing the most wear and tear from the rotary head connection to the much cheaper Saver Sub which is expendable and reduce cost.
Straight OD Sub
Straight OD Sub is used to connect drill stem members that have a similar outside diameter. The drill bit, downhole tools, heavy weight drill pipe and drill pipe can be crossed over using a straight OD sub.
Reduced Section Sub
Reduced Section Sub is used to connect drill stem parts that have different diameters. This sub can be used to crossover large OD drilling tools or a tapered drill collar string.
Nov 14 , 2022
API Lifting Sub, Saver Sub, Straight Sub, Reduced Section Sub, Rotary SubA lift Sub enables safe and efficient handling of straight OD tubulars such as drill collars, shock tools, jars, directional equipment and other tools by using the drill pipe elevators.
Nov 10 , 2022
drilling jarWe designed every aspect of this double-acting hydraulic jar to withstand the rigors and long hours of challenging applications. Featuring an extra-long stroke length for exceptional impact and impulse forces during jarring operations, the Double-Acting Fully Hydraulic Drilling Jar offers infinitely variable trip loads up to the maximum rating of the tool. Only a minimal load is required in both the up and down jarring directions, which is crucial in directional, horizontal, and extended-reach wellbores. This makes the jar an ideal solution for modern drilling operations.
Nov 08 , 2022
API Oilfield Downhole Adjustable Motor for Directional DrillingTianhe downhole adjustable motor offers downhole adjustment of the motor bend setting, saving time and money by eliminating trips and optimizing critical drilling parameters. Adjusting the motor bend setting while downhole improves hole quality and increases rate of penetration throughout all sections of the well. SelectShift improves rate of penetration drilling by increasing the rotary/bit revolutions per minute (rpm) in the straight position, extending well reach and reducing side-loading of the bit. This design builds off motor technology, providing industry-leading torque output capability, 100% flow to the drill bit, and reduced bit-to-bend length.