Drill collar manufacturers Drill Collar Standard: API Spec. Lb. Applications §Drilling weight is the primary application of drill collars. Capabilities include lean manufacturing, melting, open die forging, heat treating, machining, testing and inspection. The buoyed weight of a typical drill collar string is approximately 15% more than the maximum WOB required for optimum bit performance, ensuring that enough drill collars are run in DP-Master drill collars are machined from solid bar of modified alloy steel which is part of a drill string that provides weight on bit for drilling at extreme compression, torsion and bending stresses. Tapered drill collar strings (two or more different sizes of drill collars) are often used in large-diameter holes to maintain stiffness change. Common drill collar sizes are shown in the table below. com May 3, 2023 · Custom manufacturer of drill collars. "Discover E&M Supply Group, your trusted source for high-quality drill pipe, drill collars, and exceptional drilling components. 5/8″ OD up to 31ft and have API connections machined with … Continued Drill Pipe, Heavy weight Drill Pipe, Drill Collar, Downhole tools For Sale, API 5DP, API 7-1,API Q1,GOST Product Manufacturer. Drill OCTL Drill Collars (Slick and Spiral) are processed from AISI 4145 H Chromium Molybdenum Alloy Steel and are fully heat treated to a Brinell Hardness range of 285-341 BHN and have a minimum Charpy V-notch Impact strength of 40 ft-lbs. See full list on nov. Slick or Spiral Type (to reduce differential sticking) with slip recesses. Note: The 4¾-in OD drill collar is the smallest diameter that can be hardbanded. . We are global Drill Collars supplier. Crafted with precision and attention to detail, our non-mag drill collars are engineered to meet the highest standards of performance and reliability. These drill collar bars are full-length heat treated and water quenched to obtain mechanical properties as specified by API Spec 7-1. Sino Mechanical, as a Drill Collars manufacturer, has more than 20 years extensive experiences in the performance, application and cost-effective manufacturing of Drill Collars. Drill Collars are trepanned and drifted to API Spec. Our extensive inventory ensures you find the perfect solution for your drilling needs, whether for stock use or to enhance your drilling efficiency. Nonmagnetic drill collar materials for oil and gas applications can be fabricated. We also offer Pony Collars and Non-Magnetic Drill Collars. Apr 21, 2025 · PARVEEN drill collars, are made from ultrasonically tested bars of Chrome Molybdenum Alloy Steel (AISI 4145H modified material) and available in all sizes and connections as per API std 7 & API-RP 7G in Range 2. Command Tubular’s drill collars are made of modified AISI 4145H chromium molybdenum alloy steel. It is designed to provide weight on the drill bit, which helps to keep it in contact with the formation being drilled and improves the efficiency of the drilling process. Drill Collar Weight Specifications IDS Standard Drill Collars are manufactured from AISI 4145H modified steel and are supplied in the “as rolled” surface finish condition. 7-1 Vigor have the capability of customized tools for special circumstances use. 7. Tasman can provide drill collars with a range of specifications. Our range consists of 2. 1/2″ OD to 9. Request a quote today and experience reliable service and peace of mind with every purchase!" A spiral drill collar is a type of heavy steel collar that is used in drilling operations. Drill Collars A component of the Bottom Hole Assembly that provides weight on bit for drilling. Applications: General & Deep Well Services, Sour Oil & Gas Services, High Collapse Deep Well Services Size: 3-1/8” OD up to 14” OD in accordance with API and NS-1 specifications Type: Standard and Spiral Connection: Standard API and Proprietary Premium Connections Hardbanding: ARNCO, Postle, Tuboscope, and Castolin. Discover top-quality drill collars at E&M Supply Group, featuring new, used, and remanufactured options crafted from reputable steel manufacturers. Drill collar bars are fully heat treated to 285 to 341 BHN and Charpy impact value of 40 ft. Alternative surface finishes can be provided. China Vigor manufactures and develops the downhole drilling tools, such as coupling, drill pipe, sucker rod, drill collar, oilfield pumping unit etc, which comply with API Spec. The drill collar bore, primarily a hydraulic consideration, is determined by the minimum size to handle required circulation without excessive pressure drop. To keep you drilling in the right direction, run our Drill Collars in combination with our Stabilizers to resist bucking. Utilizing advanced materials and manufacturing techniques, we ensure that our collars offer exceptional strength, durability, and resistance to corrosion. Products are manufactured to API Spec. DP-Master manufactures drill collars in standard and spiralled from 3-1/8” OD up to 14” OD in accordance with API, NS-1 or DS-1 specifications. Used to add weight to the bit and stiffness to bottom hole assembly, our Drill Collars are an invaluable downhole tool. 7/7-1 and API RP7G where applicable and can come customized with additional features and proprietary connections of leading manufacturers per your requirements. Explore our vast inventory of new and remanufactured equipment designed to meet industry demands. 7-1and NS-1 Material: AISI4145H, 4145H Mod, non-magnetic material Type: Slick Drill Collar, Spiral Drill Collar, Short Drill Collar Special Feature: Threads Cold Rolled; Pin Relief Groove and Box Bore Back; Slip and Elevator Recess; Hard banding Providing Customized Services Drill Collars. ucp noin tzgtodpl hdg wlbswj cggim ivvx uwjjoc crdjeqy qyzmz yhn tgnesh voh jsum duvn