5-7/8"-28" Drill Jar for well drilling from China manufacturer - XI'AN KINGWELL OILFIELD MACHINERY CO.,LTD

Price:	10.0 USD
Payment Terms:	T/T,L/C,D/A,D/P
Place of Origin:	Shaanxi, China (Mainland)


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Product Detail

Model No.: API KINGWELL 5-7/8"-28" Dri...

Production Capacity: 1000 set per month

Delivery Date: 20 days after received adva...

type: 5-7/8"-28"

Supply ability: 1000sets per month

Brand: kingwell

Means of Transport: Ocean,Land,Air

Packing: EXPORT PACKAGES

standard: API 7-1

Usage: drilling tool

Main Customs: USA, Canada, Middle east

1 Drilling Jar is a downhole tool
2.API 7-1 certificate
3.with high quality and short supply delivery time

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

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	Up	5515	5515	5424	5360	5730	5270
(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
Weight(KG)	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

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 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.