Roots Vacuum Pump for Oil Production System

The lifting methods widely used in oilfield production mainly include rod pump, electric submersible centrifugal pump, roots vacuum pump and screw pump. This article discusses not only the existing vacuum pump oil production technology and supporting measures, but also roots vacuum pump for oil production system.


Subsea oil production system is a modern subsea wellhead device and oil gathering facility. The most basic requirement of the subsea oil production system is to put as many production facilities as possible on the seabed.

There are two basic approaches: one is wet tree technology and the other is dry wellhead. In the warm oil production system, each well is completed in the usual way, and then it is connected with the manifold control group by the oil flow pipe and the crude oil is transported to the production platform.

The main feature of the dry oil production system is that it has an "atmospheric pressure chamber", which is respectively attached to the wellhead tank of each well and has a manifold control group. Wet oil production facilities require divers who can swim, while dry systems require a support vessel and subsea service compartment.  

Roots vacuum pump, also known as mechanical booster pump, is a rotary positive displacement vacuum pump. The two three-blade rotors maintain a certain gap with the pump cavity, and the two rotors are not in contact with each other and keep the same when rotating in the pump cavity through a pair of synchronous counter-rotating gears.

In addition to its advantages in sand production and heavy oil wells, our roots vacuum pump oil production system also has the following advantages compared with rod pumps:

  1. Energy saving, the thicker the oil, the more significant the energy saving and consumption reduction.

  2. No air lock occurs, and it also has a demulsification effect.

  3. The swabbing is continuous and stable, and does not generate pressure in the oil layer.

  4. There is no sucker rod, which eliminates the loss caused by the wear of the rod tube, and the smaller size oil tube can be used.

  5. It can be used in inclined wells, directional wells and horizontal wells.

  6. The ground occupies a small space, there is no leakage and noise at the wellhead, and the daily management is simple.

  7. Improve the depth and displacement of the pump.


Roots Vacuum Pump Maintenance

  1. Daily maintenance items are required to check the oil quality and oil level in the pump.

  2. Maintenance items are required every week, check whether the vacuum pump leaks oil, and clean the dust and debris left on the assembly and the air intake filter element by the air intake filter element.

  3. Monthly maintenance items, check the exhaust filter, unscrew the oil discharge port to release the vacuum pump oil, when the flow rate of the pump oil is small, restart the vacuum pump for a few seconds, close the vacuum pump again, cut off the power supply, and re-spin the lower oil discharge, drain the oil, repeat this several times until the vacuum pump oil is exhausted.

  4. To clean the vacuum pump, the waste oil should be drained first, and 2L of cleaning fluid should be prepared according to the ratio of 50% vacuum pump oil, 50% paraffin or diesel fuel/fuel oil, tighten the drain plug, inject this cleaning fluid into the vacuum pump, and close the inlet, open the air port, start the vacuum pump to run for at least 30 minutes, then discharge the cleaning liquid, and dispose of the discharged cleaning liquid in accordance with environmental protection regulations.  

  5. Check the float valve: remove the joint between the oil return pipe and the fuel tank, then remove the two screws of the float valve flange, and take out the float valve from the fuel tank, check whether the float valve is clean and damaged, and use compressed air to clean if necessary. When assembling, pay attention that the sealing ring has been installed on the flange of the float valve and is intact, and put the float valve into the correct position of the oil tank.

  6. Replace the oil filter: drip lubricating oil on the sealing ring in the new oil filter, assemble and tighten by hand.

  7. Fill in new oil: unscrew the filler plug and inject the special oil for the vacuum pump. Make sure that the oil level is between the "MIN" and "MAX" marks on the oil level mirror, tighten the filler plug with the sealing ring.  


After discussing the application of the roots vacuum pump in the oil production system, it can be confirmed that the roots vacuum pump runs more smoothly, is small in size and beautiful in appearance, and is equipped with an overload protector. It can be used in oil production systems.


If you want to learn more news and knowledge about roots vacuum pumps, please read these blog posts.


Leave a comment

Please note, comments must be approved before they are published