Now a total of more than 7000 Rotaflex Long Stroke Pumping Unit are still in sound operation in key domestic oilfields, of which 5500 sets in Shengli and 1500 sets in Liaohe, Dagang, Xinjiang and Qinghai etc. Over 2000 sets were distributed overseas to America, Mexico, Argentina, and Kazakhstan etc. The annual output is above 1000 units, of which export accounts for 60%.
Benefits:
- Long, Slow Strokes: Long stroke leads to high pump fill and increased efficiency; Low stoke means less wear on downhole equipment. resulting decreased maintenance and less operational cost;
- 100% mechanical driven, smooth reverse: Power is transmitted by a long life heavy-duty belt, whose elastic cushion effect absorbs impact in reverse action and results in uniform reciprocal movement of the rod string;
- Low Torque Demand: Short torque arm of only 0.31~0.43m greatly decreases torque demand. Smaller prime mover complete with sr gear reducer can be used with energy consumption decreased by 10% to 40%;
- Safe and Easy Operation due to Optimum Structure Design: The disc brake system ensures safe operation. Enclosed derrick can be fo down for easy transportation. The unit can be slid backward integrally for well service; All moving parts with safety guard make maintenan and operation easy and safe;
- Symmetrical Counterweight Balance:100% mechanical balance features convenient and simple balance adjustment;
- High Reliability and Minimum Maintenance:The unit is designed to bear load evenly with good rigidity. The antifriction bearings, a lon belt and a heavy load roller chain are adopted to ensure unit reliability. The mechanical balance system, optimized lubrication system, automatic protective device as well as enclosed derrick can dispense the unit with frequent repair and maintenance;
- Fairly complete production supporting system ensures the unit to be used with big pumps for more fluid lift and small pumps for deep.
Specifications of Rotaflex Long Stroke Pumping Units
|
Parameters/Model |
700 |
800 |
900 |
1000 |
1100 |
1150 |
1200 |
|
Max. Polished Rod Weight(ton) |
12.0 |
14.0 |
16.3 |
20.0 |
22.7 |
22.7 |
27.2 |
|
Reducer Rating(kN.m) |
26 |
26 |
37 |
37 |
37 |
37 |
53 |
|
Motor Power(kW) |
37 |
45 |
55 |
75 |
75 |
75 |
110 |
|
Stroke Length(m) |
6.0 |
8.0 |
7.3 |
8.0 |
7.8 |
9.3 |
7.8 |
|
Min. Frequency of Stroke(spm) |
Can be very low |
||||||
|
Max Speed(spm) |
4.0 |
3.4 |
4.3 |
3.9 |
4.1 |
3.4 |
4.1 |
|
Counter Weight Assembly(ton) |
2.9 |
3.3 |
3.8 |
3.9 |
4.6 |
4.6 |
5.4 |
|
Auxiliary Counter Weight(ton) |
6.8 |
8.1 |
9.6 |
11.5 |
11.0 |
11.0 |
15.4 |
|
Shipping Weight(ton) |
15.6 |
17.5 |
19.5 |
24.0 |
26.5 |
27.0 |
29.0 |
|
Dimensions(L×W×H)(m) |
5.5×2.3×11.1 |
6.1×2.3×13.1 |
7.1×2.3×13.1 |
7.4×2.4×13.4 |
7.4×2.6×13.5 |
7.4×2.6×15 |
7.4×2.6×13.8 |
Rotaflex Long Stroke Pumping Units components and Parts List
|
No. |
Model |
Part No. |
Specifications |
|
1 |
Rotaflex 900 |
2659170 |
Assembly, load belt, metric mod6. |
|
2 |
Rotaflex 900 |
2561833 |
Assembly, wind guard load belt, metric. |
|
3 |
Rotaflex 900 |
2612963 |
Assembly, reducer 350D w/bottom caliper/sprocket. |
|
4 |
Rotaflex 900 |
1201601 |
Gauge, level STAUFF SNA 127 B/N/0/12 2EW. |
|
5 |
Rotaflex 900 |
2611353 |
Seal, oil 415379, 3.750 ID x 4.756 OD x 0.5000 WD, nitrile. |
|
6 |
Rotaflex 900 |
2524181 |
Gasket, 6 thk, cover, metric. |
|
7 |
Rotaflex 900 |
2805919 |
Kit, brake pad, sintered type 5 hayes 610m 98-10860 brake, caliper kit 610m. |
|
8 |
Rotaflex 900 |
2805921 |
kit ,brake pad sintered type 9 hayes m100 98-14180. |
|
9 |
Rotaflex 900 |
2524985 |
Modifications, brake Caliper, Hayes mod5. |
|
10 |
Rotaflex 900 |
2519566 |
Weldment, brake rotor disk, metric mod2. |
|
187 |
Rotaflex 1100 |
2843873 |
Assembly, load belt, metric. |
|
188 |
Rotaflex 1100 |
2849899 |
Assembly, wind guard load belt, metric. |
|
189 |
Rotaflex 1100 |
2562255 |
Assembly, reducer 500D w/bottom caliper/sprocket,. |
|
190 |
Rotaflex 1100 |
1201601 |
Gauge, level stauff SNA 127 B/N/0/12 2EW. |
|
191 |
Rotaflex 1100 |
2611353 |
Seal, oil 415379, 3.750 ID x 4.756 OD x 0.500 WD, nitrile. |
|
192 |
Rotaflex 1100 |
2524181 |
Gasket, 6 thk, cover, metric. |
|
193 |
Rotaflex 1100 |
2519566 |
Weldment, brake rotor disk, metric mod2. |
|
194 |
Rotaflex 1100 |
2426440 |
Bushing QD, F-3.625. |
|
195 |
Rotaflex 1100 |
2805919 |
Kit, brake pad , sintered type 5 hayes 610M 98-10860 brake, caliper kit 610M |
|
281 |
Rotaflex 900, 100 hp VSD |
1608357 |
Transformer, 1500 va with fuse. |
|
282 |
Rotaflex 900, 100 hp VSD |
1608509 |
Fuse, class cc 9a 600v time delay. |
|
283 |
Rotaflex 900, 100 hp VSD |
717758 |
Fuse, atdr15 600v. |
|
284 |
Rotaflex 900, 100 hp VSD |
755356 |
VSD panel fan 6 inch, 110v ac |
|
285 |
Rotaflex 900, 100 hp VSD |
1735391 |
FUSE, 6.3A 5X20 MM SLO BLO for speed sentry power. |
|
286 |
Rotaflex 900, 100 hp VSD |
2458891 |
Fan, Exhaust with filter, 120V, IP55, PF43000. |
|
400 |
Rotaflex 1100, 200 hp VSD |
2585586 |
Kit, braking resistor and installation Kit, 2X6AWG, 25kW Res. |
|
401 |
Rotaflex 1100, 200 hp VSD |
2965564 |
Harmonic filter, 250hp, revcon. |
|
402 |
Rotaflex 1100, 200 hp VSD |
2036641 |
MCCB 500A TP,50kA, 250HP VSD, Schneider electric. |
|
403 |
Rotaflex 1100, 200 hp VSD |
2031019 |
Fuse HRC 2A, SIZE(10X38), 500V,class Gg. |
|
404 |
Rotaflex 1100, 200 hp VSD |
2031325 |
Fuse HRC 6A, SIZE(10X38), 500V, class gG, 120KA. |
|
405 |
Rotaflex 1100, 200 hp VSD |
2031331 |
Fuse HRC 20A, SIZE(10X38), 500V, class gG, 120KA. |
|
406 |
Rotaflex 1100, 200 hp VSD |
2031381 |
Fuse HRC 10A, SIZE(10X38), 500V, class gG, 120KA. |
|
407 |
Rotaflex 1100, 200 hp VSD |
2001310 |
Exhaust fan, 12" 322MM x 322MM, 230V AC, IP55, RAL 7035. |
