KINGWELL Drilling Accelerator Type ZJQ

 

Model “ZJQ” Drilling Accelerator can be stored energy by hydraulic spring as to increase the jarring force for Hydraulic Jar. It should be applied with Hydraulic Drilling Jar Type QYⅡ jointly. The drill collar and Hydraulic Jar (below the Drill Accelerator ) can function an accelerated effect when jarring operates as for making the stuck point gain more jarring force that can increase force for two times at the highest. Meanwhile, it can decrease the bounce-back shock after jarring as to protect the drill tools above Drill Accelerator.



KINGWELL Drilling Accelerator Type ZJQ Technical Data:

Model	O.D. mm(in)	I.D. mm(in)	Connection API	Max. Stroke mm	Tension of full Stroke kN (lbf)	Hole Seal Pressure Mpa(psi)	Max Working Load kN(lbf)	Max Torque kN﹒m(lbf·ft)	Length mm(in)
ZJQ46	121 (4-3/4)	50.8 (2)	NC38	350 (13-3/4)	350 (78700)	30	1100 (247000)	15 (11000)	7430 (292-1/2)
ZJQ62	159 (6-1/4)	57.2 (2-1/4)	NC50	350 (13-3/4)	700 (157400)	30	1900 (420000)	25 (18400)	7780 (306-1/4)
ZJQ64	165 (6-1/2)	57.2 (2-1/4)	NC50	350 (13-3/4)	700 (157400)	30	2000 (449600)	25 (18400)	7780 (306-1/4)
ZJQ76	197 (7-3/4)	61.9 (2-7/16)	6 5/8REG	350 (13-3/4)	1000 (224800)	30	2600 (584500)	30 (22120)	7630 (300-3/8)
ZJQ80	203 (8)	76.2 (3)	6 5/8REG	350 (13-3/4)	1000 (224800)	30	3000 (674400)	45 (33200)	7752 (305-3/16)
ZJQ95	241 (9-1/2)	76.2 (3)	7 5/8REG	350 (13-3/4)	1200 (270000)	30	4000 (900000)	60 (44200)	6752 (265- 13/16)