DST tools 5" Hydraulic Jar
Application:Drill stem testing
Working pressure:10000psi ~ 15000psi
Working condition:High pressure high temperature(HPHT)
Standard: API (American Petroleum Institute);
The hydraulic jar is included as part of a toolstring to help remove stuck tools. The jar helps free a
stuck tool or toolstring by resisting a pull on the workstring. When the workstring is stretched by
the pull, tension in the jar is released and an upward impact is delivered to the stuck tool.
Features and Benefits
• Design of the hydraulic system ensures long life with little maintenance.
• Rig time is reduced.
• Jar can be recocked rapidly.
• Jar time delay is adjustable.
• Amount of pull to trip the jar can be varied within the limits of the time-delay system.
The temporary resistance that powers the jar is provided by a hydraulic time-delay system.Resistance is released when the metering sleeve inside the jar moves into a bypass section of the outer case. This action allows the special hydraulic oil to bypass rapidly.
The time delay required to release the temporary resistance varies in relation to the weight of the pull. For example, a light pull requires more time for release than a hard pull. When tools below the jar are stuck, a steady pull applied to the jar creates an upward impact blow to the string. The jar can be recocked when
the string is set down.
1. Halliburton type, all could change with Halliburton parts.
2. All equipments are produced according to API standard NACE MRO175-2002
Below are specfor you reference:
Add 10.00 in. (25.40 cm) for extended length for all jars except 3.00 in. For the 3.00 in. jar add
4.43 in. (11.25 cm).
²Maximum pull to trip is the pull placed on the jar to trip. Exceeding this pull might cause the
metering case to burst or the impact mandrel to part.
³Maximum pull is the pull that can be placed on the jar immediately after the jar trips, which may
be applied repeatedly without any damage. Any pull greater than this will fatigue the impact
mandrel if done repeatedly.
Meets NACE-0175 requirements (>175°F)
*Service temperature up to 450°F (dressed with 600 series o-rings and PEEK backup seals)
**The values of tensile, burst, and collapse strength are calculated with new tool conditions,
Lame's formulas with Von-Mise's Distortion Energy Theory for burst and collapse strength, and
stress area calculations for tensile strength.
***Pressure rating is defined as the differential pressure at the tool. (Differential pressure is the
difference in pressure between the casing annulus and the tool ID.)
Xi'an KINGWELL OILFIELD MACHINERY Co., Ltd. (KINGWELL), is a highly reputable supplier for oilfield equipment and services to Oil & Gas industries and provide complete solutions.
With over 10 years developing, we were developed from the beginning drilling service to manufacture factory who produce OCTG, DST tools and Solid control products.
Accordingly most innovative and reliable toolsKingwell set up a long-term science and technology cooperation, with xi'an petroleum University, daqing/ changqing oil&gas institute and jianghan machinery Research institute.
KINGWELL have experienced team, stronger enough to meet any challenge, we do believe honest is the base of business and cooperation, our aim is to build solid relationship with any part of honest. kingwell can provide highly efficient services to its clients resulting in accurate and timely deliveries at the best prices. Our products have been exported to Europe, American and Middle East.
The followings are some pictures about our Workshops & Equipments
- Payment : TT/LC
- Delivery : 30 days
- Origin : China
- Minimum Order : 1 set
- Packaging :wood case or steel carton
-Delivery Date:within 1-2 month(s) after receiving prepayment
We have some other related products as follows:
Any enquiry of above products or relative parts, PLS feel free contact back, and we will offer you a good price and show you our best service.