China Drill Collar/DC/API Spec 7/4130/API 7-1 with ce certificate top quality Good price

Item Description

Item Description
Drill Collar
LFM Drill Collar
There are distinct types of drill collars, such as spherical drill collar, spiral drill collar, CZPT -magnetic drill collar, square drill collar and so on. Regular drill collar is the circular cross area, the middle has a drinking water hole, the wall thickness is more substantial, the nozzle is smaller, the fat of for each unit length is higher than the size of drill pipe virtually 4- 5 times. The bulk of drill collar is thread processing directly on the pipe human body , but some of them also use the replaced joint.
(1) Eccentric-weight drill collar is an effective anti-deviation drilling tool, with higher drill strain utilised in indirect locations, rectifying indirect as well.
(2) When drilling directional wells eccentric-weight drill collar is an effective instrument to lessen indirect or straighten the effectively gap employing substantial drilling stress.
(3) Eccentric-fat drill collar has the benefits of basic structure, convenient use, related right to frequent drill collar without centralizers, significantly hassle-free for sinking in, fishing and milling functions.
(4) Eccentric-excess weight drill collar operates downhole properly, danger of leakage or bit freezing tough to seem.
(5) Pay considerably consideration to avoid mud balling and stop result of anti-deviation.

Drill collar (spiral drill collar)
specification NC23-31~NC70-one hundred
All sequence of API specs
government standard API Spec 7-1 API Spec 7-two
Size OD Id Lmm Shoulder chamfering diameter Bending energy ratio of the reference
mm In mm in  
NC31-41(2-7/8IF) 104.8 2004/1/8 fifty.8 2 9150 one hundred.four two.43:one
NC35-forty seven a hundred and 2004/3/4 fifty.8 two 9150 114.7 2.58:one
NC38-fifty(3-1/2IF) 127 5 fifty seven.2 2002/1/4 9150 121 two.38:1
NC44-sixty 152.four 6 57.2 2002/1/4 9150/9450 one hundred forty four.five two.forty nine:1
NC44-sixty 152.4 six 71.four two-thirteen/16 9150/9450 one hundred forty four.5 two.eighty four:1
NC44-62 158.eight 2006/1/four fifty seven.two 2002/1/four 9150/9450 149.two 2.ninety one:one
NC46-62(4IF) 158.eight 2006/1/4 71.4 two-thirteen/16 9150/9450 a hundred and fifty 2.63:one
NC46-65(4IF) 165.1 2006/1/2 57.2 2002/1/four 9150/9450 154.eight two.76:1
NC46-sixty five(4IF) 2006/1/two 71.4 2-thirteen/16 9150/9450 154.8 3.05:one
NC46-sixty seven(4IF) 171.four 2006/3/four 57.two 2002/1/four 9150/9450 159.five 3.eighteen:one
NC50-sixty seven(4-1/2IF) 171.four 2006/3/4 71.4 2-13/sixteen 9150/9450 159.5 two.37:one
NC50-70(4-1/2IF) 177.8 seven 57.two 2002/1/four 9150/9450 two.54:1
NC50-70(4-1/2IF) 177.eight 7 seventy one.four 2-13/16 9150/9450 164.7 two.seventy three:one
NC50-72(4-1/2IF) 184.two 2007/1/4 71.four 2-thirteen/16 9150/9450 169.five 3.12:1
NC56-seventy seven 196.8 2007/3/4 71.4 2-thirteen/sixteen 9150/9450 185.three 2.70:1
NC56-80 203.two eight 71.4 2-13/16 9150/9450 190.1 3.02:1
six-5/8REG 209.6 2008/1/4 71.4 2-thirteen/sixteen 9150/9450 2.ninety three:1
NC61-ninety 228.six nine 71.4 two-13/16 9150/9450 three.17:one
7-5/8REG 241.3 2009/1/two 76.2 three 9150/9450 223.8 2.81:one
NC70-ninety seven 247.six 2009/3/4 76.two 3 9150/9450 232.six 2.fifty seven:1

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Manufacturing facility



Q1: What is your packing?
A:  Normal packing.

Q2: What’s your shipping?
A:  Generally, about thirty-45 times.

Q3:  What are the shipping methods?
A: CZPT  shipment to the port near from you Air shipment to the shipment near from your company Door to door service by  international express.

This autumn:  What about the payment options?
 A: In basic, we accept T/T. 

Q5:  When can I get the price?
A: We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price,please call us or tell us in  your  email so that we will detail with your inquiry priority.


China Drill Collar/DC/API Spec 7/4130/API 7-1 with ce certificate leading high quality Excellent price