Kelly is main driver of the whole drill string. lt transmits torsional energy from therotary table through the drill string to the bit at the bottom of the hole. TIANHEKelly is a long square or hexagonal, precision machined heavy steel bar that issupported by the swivel through the rotary table and is connected to the first jointof drill pipe in the drill string.
Straightness of the kelly is very crucial in the manufacturing process, thusstraightness inspections are carried out before, during and after each machiningoperation. The flats are precision-milled to API specifications. All milling processesare performed on specially desianed rigid Kelly mills to ensure tight tolerances andhigh quality drive sections. Each TIANHE Kelly is furnished with a pressed steelthread protectors.
Features and Benefits
Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with aBrinell hardness range of 285-341BHn and a minimum average Charpy impactvalue of 40 ft-lbs
Ends and drive sections, IDs and connections machined and inspected to APlspecifications, Ultrasonic inspection is performed on all sections, Shipped in a protective steel-cased scabbard,
When ordering please specify:
Kelly type (square or hexagonal):
nominal size and overall length;
Upper and lower connections.
Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is a modernized medium-scale enterprise specialized in production of oil and gas tools.
As an API-Certified established manufacturer and supplier of a comprehensive range of downhole equipment with related accessories, we are committed to providing the highest Quality products for the Petroleum and natural gas industry since 1973.
Tianhe Oil Group strongly believes and promotes Total Quality Management, implement the ISO quality management system and HSE management system and API Standard, which has been deeply implanted into every person's thought and carried out into every aspect of work.
Our manufacturing facilities are well equipped with four automated induction heat treatment lines and dozens of other types of heat treatment ovens and well furnaces to ensure full coverage of heat treatment requirements by different products to achieve the required mechanical properties.
In order to ensure the quality consistency and interchangeability of high precision components, Tianhe has introduced WFL 5-axis Linkage Turning & Milling Machining Center from Austria, Mazak's turn milling machining center from Japan and the Haas vertical machining center from USA. These processes are facilitated with precise quality inspection equipment such as the Brunker OES Metal Analyzers from Germany, Ultrasonic and Magnetic Powder Flaw Detector and high precision Hexagon Three Coordinate Measuring Machine and Farco Portable Three Coordinate Measuring Machine.
So far, Tianhe Oil Group has established strong business relationships with over 200 international oil & gas companies in supporting the top 50 oil producing countries.
We take pride in delivering superior performances and reliability. Our objective is to exceed your expectations, improve your economics and be an integral part of your strategies.
Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is a modernized medium-scale enterprise specialized in production of oil and gas tools.
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