Comparison between Superconducting multifunctional well washing equipment to conventional well washing equipment
Nov 09, 2018

1. Conventional

1. Conventional well washing equipment: Washing method is to inject water heated by a boiler into the casing. When the casing and the oil sucker rod are heated, the wax in the sucker rod melts. Then, the injected washing liquid and well fluid are pumped out and discharged to complete the wax removal.

Superconducting multifunctional well washing equipment: The washing happens during normal production operation. The extracted fluid from oil well is automatically heated by the heat exchanger and re-injected into the well. This process increases the temperature of tubing and well fluid to remove wax and dirt with high melting point.

2. Conventional well washing equipment: The effect is mediocre when washing the tubing inner wall. Super-conducting multifunctional washing equipment: Clean off the tubing inner wall from wax, blockage, high-melting point dirt; clean off the soluble plugging material in the mesh and perforation sections of the tail pipe. (Such as: colloid, asphaltene, etc., the effect is very evident).

3. Conventional well washing equipment: One equipment dosing truck, one boiler truck, two water tank trucks.

4. Conventional well washing equipment: 40m3 of water for well washing medium (sewage water discharge); Superconducting multifunctional well washing equipment: washing well with oil well fluid, no sewage water discharged.

5. Conventional well washing equipment: PAM washing well has no effect;

Superconducting multifunctional washing equipment: PAM washing effect is remarkable.

6. Conventional well washing equipment: Oil well production will be suspended, since no water or oil will be extracted during the applicable period. The recovery period is 2-15 days;

Superconducting multifunctional well washing equipment: Good compatibility with the formation, complete wax removal, no recovery period, also save time and energy.

7. Conventional well washing equipment: Outlet temperature: 55-80 °C;

Superconducting multifunctional well washing equipment: Outlet temperature: 90-260 °C.

8, conventional well washing equipment: Thermal efficiency: 50%;

Superconducting multifunctional well washing equipment: Thermal efficiency of 93% or higher.

9. Conventional well washing equipment: Hot water wax removal, when the temperature is at 90°C, the displacement is 3m3/h. The displacement of superconducting well washing equipment is 13m3/h.

10. Superconducting well washing equipment: Steam pressure is at 15MPa, steam flow rate is at 2160m3/h. The steam tubing washing can save around 7 hours compared with the traditional equipment washing. The steam washing oil well of this equipment only needs about 1 hour when the oil well is overhauled, saving time and effort.

11. Conventional well washing equipment: There is no automatic dry burning-resistant protection device; superconducting well washing equipment: there are a number of automatic protection measures to prevent dry burning of equipment and eliminate potential safety hazards.

12. Conventional well washing equipment: The well washing method has a single function; superconducting well washing equipment: three well washing methods are applicable: hot water, steam and self-circulation.

13. Conventional well washing equipment: The heat is directly discharged from the chimney, resulting in the energy waste; superconducting well washing equipment: it is equipped with a chimney waste heat secondary utilization device to save energy.

14. Conventional well washing equipment: The flame directly burns coils and solder joints, which is prone to produce liquid leakage, and there are potential safety risks in coking and scaling; superconducting well washing equipment: coils have no contact with flame, no liquid leakage, and have security assurance without coking and scaling.

15. Conventional well washing equipment: It is made of carbon steel material. The coil is easy to corrode and cause leakage, and must be replaced after 1-2 years; superconducting well washing equipment: it uses superconducting material. There is no need to replace coils, which saves time and cost.

16. Conventional well washing equipment: It uses water as working fluid. 40 m3 of water is needed to be injected, resulting in the vast waste of water. The fluid produced after well washing causes heavy pollution to the oil layer, and a large amount of sewage is discharged, which causes secondary pollution to the surface environment; superconducting well washing equipment washing well: it uses the fluid produced from oil well as medium, which has good compatibility with the formation and eradicates pollution on formation and oil layer; there is no sewage discharged and no pollution on the surface after well washing, making a protective effect on the ecological environment. 


Superconducting multifunctional well washing equipment 


Conventional well washing equipment

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