API 7-1 5-7/8"-8" Drill Jar for petroleum machinery

Model: API KINGWELL 5-7/8"-28" Drill Jar 003
Place of Origin: Shaanxi,China (Mainland)
standard: API 7-1
type: 5-7/8"-28"
Usage: drilling tool
Supply ability: 1000sets per month
Main Customs: USA, Canada, Middle east
Brand: kingwell

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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:10.0 USDProduction Capacity:1000 set per month
Trade Term:FOBPacking:EXPORT PACKAGES
Payment Terms:L/C, D/P, D/A, T/TDelivery Date:20 days after received...
Min. Order:1 Piece/Pieces
Means of Transport:Ocean, Air, Land

1 Drilling Jar is a downhole tool

2.API 7-1 certificate

3.with high quality and short supply

2. Main construction and working principle

The drilling (up ) jar is as shown in block drawing enclosed. and the drilling (down )jar is shown in block drawing enclosed. 2.1 The working principle for drilling (up) jar The up jarring action is obtained by cone body, by-pass body , sealing body and oil seal of sealing body. When jarring is required , lower steadily drill string , move down the mandrel of up jar, cone-shaped piston departs from sealing body, the hydraulic oil between cone body and floater in the cylinder flows into pressure chamber through by-pass body. When mandrel shoulder touches against the end-face of wiper body, the tool is closed. Continuous elevate drill string , the passage between sealing body and lower end of cone body is closed. On two oil discharge grooves can allow a few of oil flowing in, the other oil flowing are blocked at upper part of cone body so that oil pressure is rising and drill string above mandrel gradually stretch to store energy. Because the oil flow limitedly through the oil metering groove on the cone , the drill string extends. When cone body moves up to unload groove, the high pressure oil in pressure chamber in short time release energy. The drill string stretched suddenly

2

shrinks so that top face of extension mandrel strikes against shoulder of spline with extreme high speed and provides a violent up jarring impact against the stuck drill string connected at lower part of external barrel. Steadily elevating the drill tool by several times can force tool to produce continuous up jarring


3.
Up jarring test data

Type

ZSJ80

ZSJ76

ZSJ70

ZSJ62

ZSJ56

ZSJ46

Rated release force(KN)

400~600

400~600

350~550

300~450

200~350

150~250

Down jarring test data

Type

ZXJ80

ZXJ76

ZXJ70

ZXJ62

ZXJ56

ZXJ46

Max.release force(KN)

600

600

550

500

400

250

Technical specifications and parameters

Type

ZSJ 80

ZSJ 76

ZSJ 70

ZSJ 62

ZSJ 56

ZSJ 46

Parameters

ZXJ 80

ZXJ 76

ZXJ 70

ZXJ 62

ZXJ 56

ZXJ 46

Item







O.D.(mm)

203

197

178

160

146

121

I.D(mm)

71.4

71.4

70

57

57

51

Pull down

Up

5515

5515

5424

5360

5730

5270

overall length

(mm)

Down

5250

5250

5215

5208

5000

5125

Pull down

Up

368

368

344

344

332

305

stroke(mm)

Down

178

178

178

178

180

178

Thread conn. API

6 5/8"REG

6 5/8"REG

NC50

NC46

6 5/8"REG

NC38

Max.tensile load(KN)

2500

2500

2500

2500

2500  

2500  

Max.Working Torque(N.m)

20 x 103

18 x 103

15 x 103

15 x 103

15 x 103

13 x 103

Weight(KG)

Up

1085

980

680

530

480

330

Down

1027

920

645

520

457

310


5.Lubricate with thread grease , connect jar with drill string according to specified

torque, and remove mandrel collar clamp by lifting of drill string.

API 7-1 5-7/8 -8Drill Jar for petroleum machinery
API 7-1 5-7/8 -8Drill Jar for petroleum machinery

Testing for releasing force of jar

6.2.1 Up jar 6.2.1.1 Adjust flow rate of pump on working table of jar tester to ensure speed of piston bar up to 450~650 mm/min, try to pull , and rating release force for up jar shall keep with data in table2. The max. release force for down jar shall meet with data in table


API 7-1 5-7/8 -8Drill Jar for petroleum machineryAPI 7-1 5-7/8 -8Drill Jar for petroleum machinery
9. How to order
Specify: Name of spare steel parts ,
jar type If it is rubber part ,
specify rubber part name and jar type.
Special requirement if order jar in special specification and series.

Category: Drill Tools

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