China China OEM Hss Drill Bits - Coring Tools – LUQI factory and manufacturers

China OEM Hss Drill Bits - Coring Tools – LUQI

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China OEM Hss Drill Bits - Coring Tools – LUQI Detail:

The coring tool is designed according to the characteristics of the US 250 coring tool, combined with the domestic conventional coring and material processing conditions, and new conventional coring tools designed for use in the field with existing problems. 40CrMnMo high quality steel is preferred for outer tube. It can be used for well depth up to 7000 meters, and the inner cylinder can be used for disposable glass cylinder.

Coring Parameters

bit pressure（KN）	RPM（r/min）	pumping pressure（MPa）	CC（L/S））
40～60	80～120	6～10	25～35

Technology Characteristics:

1. The threaded joint has an open elastic ring.

2. Rotating suspension assemblies have two reverse buckles and caps to prevent steel-flue tripping.

3. There are adjuster to guarantee 1mm coaxiality between inner barrel and coring bit.

4. Formation-keeping inner barrel and composite core catcher cutting coring device can gurantee the shallow stratum coring and soft broken stratum boring.

5. This tool should have a good performance in inclined well coring.

7. High strength material can guarantee the safety and reliability in 7000m coring.

Conventional deep well anti-back button core tool series
Model	180-124	172-121	168-121	133-89	127-89	121-89	141-89
OD	Φ180×144 (Φ172×144)	Φ172×136	Φ168×146	Φ133×101	Φ127×108	Φ121×100	Φ141×119
ID	Φ124×108	Φ121×107	Φ121×107	Φ89×76	Φ89×76	Φ89×81	Φ89×81
Core diameter	Φ100	Φ100	Φ100	Φ70	Φ70	Φ70	Φ70
Coring length	9m and u18m	9m and u18m	9m and u18m	9m	9m	9m	9m and u18m
Adjuster OD	Φ198-Φ213	Φ198-Φ213	Φ184	Φ149	Φ149	Φ139	Φ1494
Shackle type	NC50	NC50	NC46	NC38	NC38	NC38	NC38
Coring bit size	Φ200 Φ215.4	Φ200 Φ215.4	Φ187 -Φ200	Φ152	Φ142 Φ152	Φ142	Φ152
Remarks	40CrNiMo Outer barrel 40CrNiMo	Special custom made for inner and outer barrel	6 5/8 drill stem		Φ142 （No adjuster）	Special custom made for inner and outer barrel	5 9/16 Drill stem

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