Well Drilling Spiral Drill Collars

Making of aisi 4145h alloy steel, this is a kind of dill collar which add three right out of spiral groove on the outer circle of ordinary drill collar when processing. The main effect is to reduce the drill collar wall in the area of contact and friction when working, maintain uniformity with the mud through spiral mobile, keep the balance of drill string and prevent pressure sticking. The single weight of spiral dill collar is 4% lighter than the same specification of ordinary dill collar , the two ends of the thread and the general shape are the same with drill collar. According to the form of spiral it is divided into type i and type ii. It need to be discuss.

Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. MS brand spiral drill collars are manufactured strictly according to API Spec7-1 and standard SY5144.

Drill Collar is the basic component in the BHA which provides weight on the bit for drilling and keeps the drill string in tension.Manufactured from AISI 4145H modified quenched and tempered steel.

SPIRAL DRILL COLLAR Drilling Tool China drilling motor

Orchid Energy could supply slick type drill collar, spiral drill collar and Non-magnetic drill collar (NMDC). Orchid Energy can provide three types of Non Magnetic Drill Collar: Non Magnetic Slick Drill Collar, Non Magnetic Spiral Drill Collar, Non Magnetic Flex Drill Collar, Pony Collar.(P530,P550 material etc) Non Magnetic Drill Collar (NMDC) are made from low-carbon stainless steel as API specification and implementation of SY/T5144 standard, which can be cold thread rolling, machine special double shoulder thread and do as other specifications request. Non Magnetic Drill Collar are as a housing for MWD tools and also could provide weight for drill string. Test and Inspection carried out on each bar: Chemical Composition, Tensile Test, Impact Test, Hardness Test, Metallographic Test, Corrosion Test, Ultrasonic Test over the whole length of the bar, Relative magnetic permeability Test, Hot spot Test, Dimensional Inspection. Slick/Spiral Drill collar is produced by AISI 4145H modified quenched and tempered steel as API specification and implementation of SY / T5144 standard, which can be cold thread rolling, copper or phosphate processing, machine special double shoulder thread and other specifications. Slick/Spiral Drill collarFeatures & Benefits: Pressed steel thread protectors are supplied for drill collar; Stress relief groove & bore back Box applied if needed; Hardbanding material ARNCO 100XT,ARNCO 300XT,TCS8000 applied if needed; Slip and elevator recess are machined in accordance with API7-1;

The spiral drill collars are made of 4145HMOD modified chromium-molybdenum alloy steel according to API Spec 7-1 . All threads can be phosphated,copperised or cold worked. All threads are machined with CNC Lathes-Double-Shouldered and a special thread, the max diameter of spiral drill collar is 14 inch. Out diamete: 3 7/8"~ 14"(inch) Depth of cut: 4.0 ~ 11.9 (mm) Length: 9150+150(mm) Standard size�?� for�?� drill collar Connection # OD ID L mm DF mm Bending strength ratio mm in mm In NC23-31 79.4 3 1/8 31.8 1 1/4 9150 76.2 2.57:1 NC26-35 88.9 3 1/2 38.1 1 1/2 9150 82.9 2.42:1 NC31-41 104.8 4 1/8 50.8 2 9150 or 9450 100.4 2.43:1 NC35-47 120.7 4 3/4 50.8 2 9150 or 9450 114.7 2.58:1 NC38-50 127.0 5 57.2 2 1/4 9150 or 9450 121.0 2.38:1 NC44-60 152.4 6 57.2 2 1/4 9150 or 9450 144.5 2.49:1 NC44-60 152.4 6 71.4 2 13/16 9150 or 9450 144.5 2.84:1 NC44-62 158.8 6 1/4 57.2 2 1/4 9150 or 9450 149.2 2.91:1 NC46-62 158.8 6 1/4 71.4 2 13/16 9150 or 9450 150.0 2.63:1 NC46-65 165.1 6 1/2 57.2 2 1/4 9150 or 9450 154.8 2.76:1 NC46-65 165.1 6 1/2 71.4 2 13/16 9150 or 9450 154.8 3.05:1 NC46-47 171.4 6 3/4 57.2 2 1/4 9150 or 9450 159.5 3.18:1 NC50-67 171.4 6 3/4 71.4 2 13/16 9150 or 9450 159.5 2.37:1 NC50-70 177.8 7 57.2 2 1/4 9150 or 9450 164.7 2.54:1 NC50-70 177.8 7 71.4 2 13/16 9150 or 9450 164.7 2.73:1 NC50-72 184.2 7 1/4 71.4 2 13/16 9150 or 9450 169.5 3.12:1 NC56-77 196.8 7 3/4 71.4 2 13/16 9150 or 9450 185.3 2.70:1 NC56-80 203.2 8 71.4 2 13/16 9150 or 9450 190.1 3.02:1 6 5/8 REG 209.6 8 1/4 71.4 2 13/16 9150 or 9450 195.7 2.93:1 NC61-90 228.6 9 71.4 2 13/16 9150 or 9450 212.7 3.17:1 7 5/8 REG 241.3 9 1/2 76.2 3 9150 or 9450 223.8 2.81:1 NC70-97 247.6 9 3/4 76.2 3 9150 or 9450 232.6 2.57:1 NC70-100 254.0 10 76.2 3 9150 or 9450 237.3 2.81:1 8 5/8REG 279.4 11 76.2 3 9150 or 9450 266.7 2.84:1 8 5/8REG 355.6 14 76.2 3 9150 or 9450 266.7 2.84:1

Drill collars are extra-heavy integral tools used to concentrate weight onto the drill bit so as to produce sufficient force for the drill bit to break rock efficiently while drilling. They are made of AISI 4145H or 4145H modified steel and are connected between drill pipes and drill bits. Our drill collar connections comply with dimensional requirements specified in API Spec 7-1. Drill collars also come with slip and elevator recesses for safe and efficient handling. Slip and elevator recesses can be used together or separately. Contact Us For more information, you can contact me : Looking forward to cooperating with you!

EQUIPMENT SUMMARY Price : $4,300.00Type : Equipment For SaleDate : April 18, 2022Make : Grant PridecoModel :Year :Condition : NewWarranty : NoLocation : USA DESCRIPTION 51 joints of Grant Prideco 6 1/2â?³ Spiral Drill Collars NC-46 w/ MTR Price is per collar We also have at the same price per collar Grant Prideco 6 3/4³ Spiral Drill Collars, NC -50 with MTR 3 joints