Coring Barrel

Coring tools are used for acquisition of the rock core in petroleum drilling. The coring tools can be applied to soft, moderate and rigid rock formations.

Core Barrel Type	JD-CB 3-1/2''*1-3/4''	JD-CB 4-3/4''*2-5/8''	JD-CB 5-1/4''*2-3/4''	JD-CB 5-3/4''*3-1/2''	JD-CB6-3/4''*4''	JD-CB 7-1/8''*4-1/8''	JD-CB 8''*5-1/4''
Length(mm)	4,600	9,200 18,400	9,200 18,400	9,200 18,400	9,200 18,400	9,200 18,400	9,200 18,400
Out Barrel(OD)	89*70	121*93	133*101	146*118	172*136	180*144	203*169
Inner Barrel(OD)	60*52	85*72	89*76	108*94	121*108	127*112	159*140
Top Threads	2-3/8IF	3-1/2IF	3-1/2IF	3-1/2IF	4-1/2IF	4-1/2IF	6-5/8 RRG
Bit Size(in)	4-1/8	5-7/8 6-1/2	5-7/8 6-1/2	6-1/2 7-7/8	7-1/2 9-5/8	8-1/2 9-5/8	12-1/4
Core Size(mm)	45	66	70	89	101	105	133

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