ZJS Jar Intensifier
Introduction:
The ZJS type jar intensifier is a type of downhole fishing jar designed to increase the top jar's jarring force. It runs in conjunction with either YSJ type hydraulic top jar or CSJ type super jar.The intensifier is essentially a fluid spring that stores strain energy under compression. When the strain is removed, the stored energy is released, accelerating and intensifying the top jarring action. The top jarring action thus creates a direct impact on the fish. In addition, the fluid helps to absorb the shock from the rebounding drill string after the jarring stroke, protecting both the drill tools and fishing tools from damage.
Function:
supply acceleration to the upper end of the jar during the free jarring stroke.
Working Principle
Normally, the jar intensifier is connected on top of drill collar and on the lower end of the drill stem. When the fishing tool engages with the fish, the drill tool is lifted. A large amount of energy was thus stored in the intensifier when the silicone oil in the top chamber of the piston was compressed. As the tool is lifted, when the top jar reaches it's free impact stroke, the stored energy in the jar intensifier is suddenly released, accelerating the drill collars and jars upward. When the top jar reaches its maximum stroke, astrong top jarring action will impact on the fish, resulting in one time jarring force.
Features:
easy to assemble, operate and maintain.,no high pressure pre-loading
Available model:
ZJS31B ZJS36B ZJS42B ZJS44B ZJS46B ZJS62B ZJS64B ZJS70B ZJS76B ZJS80B ZJS90B
Specifications - ZJS Jar Intensifier
1 ZJS Jar Intensifier ZJS31B 79 25.4 2991 215 2 3/8 REG 300 3 30 13~15 120kg
2 ZJS Jar Intensifier ZJS36B 95 28 3110 215 NC26 550 4 30 17~20 170kg
3 ZJS Jar Intensifier ZJS42B 108 32 3240 250 NC31 700 6 30 25~30 190kg
4 ZJS Jar Intensifier ZJS44B 114 38 3340 250 NC31 800 7 30 25-30 200kg
5 ZJS Jar Intensifier ZJS46B 121 38 3340 250 NC38 900 8 30 30~35 230kg
6 ZJS Jar Intensifier ZJS62B 160 57 4500 330 NC50 1500 15 30 60~65 530kg
7 ZJS Jar Intensifier ZJS64B 165 57 4500 330 NC50 1500 15 30 60~65 560kg
8 ZJS Jar Intensifier ZJS70B 178 57 4000 310 NC50 1800 17 30 75~85 600kg
9 ZJS Jar Intensifier ZJS76B 197 71.4 4010 330 6 5/8 REG 2100 20 30 62~67 860kg
10 ZJS Jar Intensifier ZJS80B 203 71.4 4010 330 6 5/8 REG 2200 20 30 62~67 900kg
11 ZJS Jar Intensifier ZJS90B 229 76 4070 330 7 5/8 REG 2500 22 30 75~85 1030kg
