API Surface Oilfield Drilling Jar

• After-sales Service: 7X24
• Warranty: 12months
• Certification: ISO 9001:2000, API 7-1
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: DJ
• Power Source: Hydraulic
• Operation Pressure: Atmospheric Pressure
• Applicable Medium: Mud, Water, Natural Gas, Crude Oil
• Structure: Vertical
• Material: Alloy
• Length: R1-R3
• Transport Package: Stand Export Wooden Box
• Trademark: LFM
• Origin: China
• Production Capacity: 100000PCS/Year

Product Description

API Surface oilfield Drilling Jar

 

Product Description

The DJ Type Surface Bumper Jar is an effective tool for resolving the problem of stuck drill tool in down hole. It is connected with the surface section of drill string, the device to adjust the tonnage shall protrude from the rotary disc face, the violent down jarring to the stuck catch can be clearly seen when the surface jar makes jarring operation. The jarring strength for the tool can be easily adjusted and it is an easy operated, unique designed tool which can make continuous down jarring. The surface jar, which not only can bear heavy load and strong torque but also owns a good sealing property and can withstand the mud circulation with high pump pressure, has proven to be asafe and successfully effective releasing tool through many years application.

Product Parameters

Type	DJ46B(4 3/4")	DJ70B(7")
Parameter
O.D. mm (in)	121(4 3/4)	178 (7)
Max.Jarring force MN (tf)	0.4(41 +- 5)	0.8 (80 +- 5)
Max.Tension Load MN (tf)	1.2(122)	1.5 (153)
Sealing Pressure Mpa (kgf/cm2)	20(196)	20(196)
Stroke mm (in)	1500 (59)	1220 (48)
I.D. mm (in)	32(1 1/4)	51(2)
Thread Connection	NC38 (3 1/2 IF)	NC50 (4 1/2 IF)
Closed Length mm (in)	3155 (124.2)	3090 (121.8)

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