Double-plunger valve downhole pump
Since 1986, the (General Machinery Plant) Sanjack Petro’s former has obtained the qualification for manufacturing Class I and II pressure vessels.
Now the SANJACK ‘s special equipment has the national A2 level (Ⅰ, Ⅱ, Ⅲ) pressure vessel manufacturing qualification; D-level pressure vessel design qualification; A-level boiler manufacturing, installation, alteration, repair & maintenance qualification; American Society of Mechanical Engineers ( ASME) U and S stamp qualifications.
The double plunger injection and recovery pump is suitable for heavy oil thermal recovery of single well steam huff and puff. The operation is simple and fast, and one string operation can realize two major steps of steam injection and oil production. The pump is simple and fast in injection and extraction conversion, and the steam injection operation can be carried out when the plunger is lowered to the bottom, and the oil extraction can be realized when the plunger is lifted up after the steam injection is closed.
- The special structure can prevent barrel from scaling and damage after steam injection, and can prevent falling objects from entering the pump cavity.
- Special structure prevents damage to the casing by steam injection.
- The bottom of plunger is equipped with a special structure to prevent the high temperature and high pressure in the tubing string from damaging the plunger.
Suitable for single well that requires steam injection for thermal recovery.
|Tubing size (in)||2 7/8||3 1/2|
|Sucker rod size (in)||3/4||7/8|
|Pump constant (K)||2.235||3.694||5.518|
|Max. O.D. (mm)||89.5||108|