| Customization: | Available |
|---|---|
| After-sales Service: | Support |
| Warranty: | Support |
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The Hydraulic Up/Down Intensifiers is a double acting accelerator used to increase the impact effect of the Hydraulic Up/Down Jars. The Intensifiers stores concentrated energy in an optimal position in the Jar string. It helps to absorb impact shock waves that travel up the drill pipe allowing the drill string to be utilized closer to their yield loads. This permits higher pull loads to be placed on the hydraulic drilling jars. The Intensifiers provides the operator the ability to perform impact operation at or near the surface. The compressibility provides the necessary "stretch" to operate the Jarring equipment. The Intensifiers supplies drive for the concentrated weights in the jars string in the same manner as the long resilient drill string. It is an efficient reservoir for storing energy since its stretch is confined to a short tool length. The increased efficiency and stretch provides a much harder hitting Jar system and increases the impact up to approximately a factor of three and can impact at much higher impacts depending on conditions. It will work on any drill string and provides a means to get higher impact load in a crooked or extended reach well, where drag is a significant factor. The Intensifiers /Jar system should be placed as close to the stuck point as possible. The impact effect diminishes as the distance increases between the intensifiers and the Jar and the stuck point.
Up jarring
Lowering drill string to make drilling jar closed completely (in locking position), elevating drill string by the order of small tonnage to larger tonnage, which make spring and hydraulic cylinder delay, when mandrel move to a position and become release resistance, the spring force stored in drill string will transfer to upforward energy and up jarring. Repeating the above several times can force tool to produce continues up jarring.
Down jarring
Move up and down the drill string to make drilling jar closed completely (in locking position), lowering drill string to make spring compressed and stored energy. When pressure of jar is larger than the desired lower unlocking force, grapple will slide out from mandrel to release the locking and make down jarring. Repeating the above several times can force tool to produce continues down jarring.
|
Model
|
JYSZ121
|
JYSZ165
|
JYSZ203
|
|
O.D. (mm)
|
121
|
165
|
203
|
|
I.D. (mm)
|
51.4
|
57
|
71.4
|
|
Closed length(mm)
|
4500
|
5175
|
5770
|
|
Upper Stroke(mm)
|
228
|
224
|
240
|
|
Lower Stroke(mm)
|
150
|
150
|
176
|
|
Connection
|
NC38
|
NC50
|
6 5/8 REG
|
|
Max.tensile load (MN)
|
1.4
|
2.2
|
3.6
|
|
Max.work torque (kN.m)
|
13
|
15
|
20
|
|
Max.jarring lifting tons(tf)
|
38
|
72
|
109
|
|
Pumping area (cm2)
|
60
|
100
|
176
|
|
Weight
|
286kg
|
638kg
|
1139kg
|
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