Hydrodynamic impact on the formation

Preparatory work:

• The well is disconnected from the conduit by the operator of the Customer’s shop;

• Arrangement of equipment, piping of the mouth, filling the topping tank from the conduit.

Conducting hydrodynamic impact on the formation:

• Measurement of injectivity by hydrodynamic impact on the formation;

• Injection of fluid into the formation at maximum flow rate under pressure not exceeding the stock tubing pressure testing limit/pressure release – cyclical repetition of this operation in order to drain the formation. As a result, the bottomhole zone is washed, a network of artificial fractures is created, and an initial increase in injectivity is achieved (the duration of the operation depends on the progress in injectivity);

• Pumping the acid composition into the formation (Customer’s contractor);

• Acid reaction in the formation (2 hours);

• Dissipation of acid reaction products by injecting fluid into the formation with NEKKO’s pump units.

Final works:

Dismantling of hydrodynamic impact equipment, connection of the well to the water line by the operator of the Customer’s workshop, cleaning of the territory.

• Reanimation of wells with a large radius of formation contamination by creating a network of cracks in the bottomhole zone of the formation and filtration of acid compositions through them deep into the formation;

• The hydrodynamic impact uses stock tubing and packer (without lifting it out of the well);

• No costs are required to prepare the well for work;

• There is no need to saturate the formation before hydrodynamic impact;

• During hydrodynamic impact no well workover crew is required, the work is carried out without approach;

• The average duration of work is 6 hours (from the moment the well is driven away from the water conduit until the moment of tamping back to the water conduit).