Double acting mechanical-hydraulic drilling jar

Double acting mechanical-hydraulic drilling jar integrates upward jarring with downward jarring and has all advantages of both mechanical drilling jar and hydraulic drilling jar, it applies to all kinds of drilling operations and be used through combining with drilling tools. When the downhole tools get struck, it can generate upward jarring or downward jarring through lifting and landing drilling strings, and also release meeting resistance and free stick by many times jarring to recover formally drilling operation promptly. Avoid meeting resistance or free stick to become further accident and cause more bigger losses. If releasing force is failed, it can dynamically adjust at any time on sites and be easy to use.

Description
Inquiry

Specification

OD mm(inch)	ID mm(inch)	Conn.	Max. Tensile load KN	Max. Working Torque (KNm)	Rated Force
OD mm(inch)	ID mm(inch)	Conn.	Max. Tensile load KN	Max. Working Torque (KNm)	Upward Jarring Force (KN)	Downward Jarring Force (KN)
121(43/4)	44.5(1 314)	NC38	1100	15	350士30	250士30
165(6 1/2)	57.2(2 1/4)	NC50	1500	25	700±30	350士30
203(8)	70(2 3/4)	6 5/8REG	2600	35	1000士30	500士30