The Swabbing in Oil Drilling is an important process for Swabbing for workover of oilfiled, which directly affects the production efficiency and cost control .

Swabbing is the process of draining liquid from the production area of a gas well or oil well.Gas wells and oil wells generate fluids during the service life of a well. When drilling for the first time, it is usually fractured to help open up the production area. After hydraulic fracturing, the liquid is recovered by swabbing the oil well. When the liquid is lifted to reduce the static water pressure of the production formation, the bottom hole pressure pushes gas and/or oil upwards out of the well.

Although the lifespan of the well has ended, as the well ages, the liquid will flow back with natural gas or oil. If the bottomhole pressure is insufficient to push the liquid out of the well, production will decrease. Then the oil well must be swabbed or the static water pressure reduced to maintain production.

The principle of swabbing is to discharge accumulated liquid and waste liquid from the wellbore to maintain a clean underground environment and improve oil field production efficiency. Usually, liquid discharge includes a large amount of harmful substances such as oily water, wastewater, and mud. Liquid discharge technology needs to ensure the safety and efficiency of the discharge.

The current commonly used method for swabbing and draining fluids is the method of using a rubber swab driven by a drilling rig. The use of a drilling rig on the ground cannot operate continuously and requires manual maintenance; The use of a leather bowl suction pump underground makes the wellhead unsealed, and the pump is prone to damage, resulting in low suction efficiency. Due to the short swabbing cycle of each oil well, surface swabbing equipment needs to be frequently transported, resulting in high transportation costs, inconvenient transportation, and potential safety hazards during the transportation process.

In response to the above issues, Sanjack developed a continuous swabbing truck.

The swabbing truck is a special oil vehicle modified based on a Class II chassis. It adopts the suction principle and owns various functions such as oil recovery, oilforced drainage, oil testing. It can also be used for well dredging and salvage operations in oil wells and water wells.

It mainly consists of Class II chassis, depth and weight control system, power system, mast and steel wire rope, winch drum, braking system, deceleration system, traction system, control system, safety protection system, and operation platform

Among them, the swabbing system is equipped with a sucker rod pump system, which is driven by a steel wire rope to drive the sucker rod pump. The steel wire rope sealing device can achieve wellhead sealing. The sucker rod pump can achieve continuous swabbing. The swabbing string can be integrated with the fracturing or acidizing string, reducing the process of partially lifting and lowering the string.