SZJS Double Acting Drilling Accelerator
The SZJS Double Acting Drilling Accelerator is a specialized downhole drilling tool designed to enhance jarring functionality when used with full hydraulic drilling jars. This tool features a hydraulic spring as its energy storage element and is engineered to work in conjunction with hydraulic drilling jars to deliver superior performance.
Key Features & Benefits
- Intensifies drill collar and drilling jar performance for stronger jarring force
- Reduces damage to upper drilling tools during upward or downward jarring operations
- Hydraulic spring energy storage system for reliable performance
- Must be used in combination with full hydraulic drilling jars
Technical Specifications
| Model |
SZJS121 |
SZJS165 |
SZJS197 |
SZJS241 |
| OD mm(inch) |
121(4-3/4) |
165(6-1/2) |
197(7-3/4) |
241(9-1/2) |
| ID mm(inch) |
50.8(2) |
57.2(2-1/4) |
70(2-3/4) |
76.2(3) |
| Tool Joint Connection API |
NC38 |
NC50 |
6-5/8 REG |
7-5/8 REG |
| Max. Upward Pull Force KN(lbf) |
350(79,000) |
700(160,000) |
1000(225,000) |
1250(281,000) |
| Max. Downward Push Force KN(lbf) |
180(40,000) |
350(79,000) |
500(112,000) |
650(146,000) |
| Max. Tensile Load KN(lbf) |
1100(247,000) |
2000(450,000) |
2800(630,000) |
3500(790,000) |
| Tensile Yield KN(lbf) |
1950(438,000) |
3750(843,000) |
6650(1,495,000) |
9850(2,216,000) |
| Torsional Limited KNm(lbfft) |
15(11,000) |
30(22,000) |
45(33,000) |
75(55,000) |
| Torsional Yield KNm(lbft) |
27(20,000) |
75(55,000) |
90(66,000) |
150(110,000) |
| Overall Length mm(ft) |
5098(16.7) |
5615(18.4) |
5947(19.5) |
6501(21.3) |