Jining Donghong Machinery Co., Ltd
Quality supplier of drilling rig parts for Bomco,Lanzhou LS, Honghua, Sj petro, Rg Petro, Beijing BPM, Shenkai, Kingdream, CCDC

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Surface Bumper Jar  DJ46B (4 3/4") 
Brand: 0012
Present point: 0
Point offset: 0.0
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DJ Surface Bumper Jar


Introduction:

The DJ surface bumper jar has been proven to be a safe and effective tool in releasing stuck tools in drilling operations throughout the years.


Operation:

It is generally connected at the surface section of the drill string during operations which require strong downward jarring impacts. The jarring force can be easily adjusted with the adjustable device located above the rotary disc. The surface bumper jar is easy to operate and is uniquely designed to support continuous down jarring.


Advantage:

Generally when the surface jar makes a jarring operation, the strong down jarring impact on the stuck tool can be clearly seen. Thus, the surface jar     is built to withstand heavy load and strong torque. In addition, it possesses good sealing performance that can withstand mud circulation with high pump pressure.


Model:

DJ46B (4 3/4")   DJ70B (7")   DJ70C (7")   DJ80B (8″)



Specifications - DJ Surface Bumper Jar

  1   DJ Surface Bumper Jar   DJ46B (4 3/4")   208000   121 (4 3/4″)   0.4 (41±5)   1.2 (122.00)   30 (294)   1500 (≈59″)   30 (1 3/16″)   NC38   3095 (121.85″)   15   170

  2   DJ Surface Bumper Jar   DJ70B (7")   213000   178 (7″)   0.68 (70±5)   1.5 (153.00)   30 (294)   1220 (≈48″)   47 (1 7/8″)   NC50   3090 (121.8″)   20   450

  3   DJ Surface Bumper Jar   DJ70C (7")   213100   178 (7″)   0.68 (70±5)   1.5 (153.00)   30 (294)   1800(≈70.87″)   47 (1 7/8″)   NC50   3670 (144.5″)   20   500

  4   DJ Surface Bumper Jar   DJ80B (8″)   215000   203 (8″)   0.68 (70±5)   2.1 (214.30)   30 (294)   2000(≈78.75″)   50 (z″)   NC50   3890 (153.15″)   20   730