Drill Collar
Our European customer has ordered a batch of Slick Drill Collar with Outside Diameter 2_7/8",Inside Diameter: 1_1/4", Overall Length: 31' (Range2), Connection type and size: 2_3/8" PAC,Equipped with pressed steel thread protectors,Cold rolled, phosphatized threads.
Now we are doing our best to arrange production and ensure delivery on time under our strict quality control system.
Drill Collar is shorted for DC, which is a device used at the lowest part of a drill string and is a major part of the bottom hole assembly (BHA). Its main characteristics are large wall thickness (generally 38-53mm, equivalent to 4-6 times of the wall thickness of the drill pipe), with large gravity and stiffness, in order to to apply weight to the drill bit.Normally, a drill collar is threaded at both ends, male on one end and female on the other end.
Based on the structure and material, Drill collars can be simply devided into three types:
●Slick Drill Collar
●Spiral Drill Collar
●Non-Magnetic Drill Collar
●Material: AISI 4145H Mod.
●Standard: API, NS-1
●Hard Banding: Arnco 100XT, Arnco 300XT, TCS-8000, etc.
●Length: 9150--9450 mm
Kindly note that Slip and elevator grooves, hand banding could be produced as per the customers’ requirements.
Please specify when ordering:
-Drill collar OD and ID;
-Overall length;
-Connections required (size and type);
-Type: Slick Drill Collar, Spiral Drill Collar or Non-Magnetic Drill Collar
-Stress relief groove
-Slip and / or Elevator Recess
-Hard banding