The Pulse Horizont jet pump is designed to induce flow from the formation for the purpose of well exploration and impact on the near-wellbore zone of formations, and specifically:
For fields with abnormally low formation pressures and high (up to 1 Darcy) reservoir permeability
The sealing assembly allows low static operation up to 1000 m.
Pulse Horizont allows you to carry out the following technological operations:
Reduction of bottomhole pressure and stimulation of inflow from the formation;
Geophysical surveys in the mode of set values of depressions by geophysical instruments delivered into horizontal liners with the help of coiled tubing;
Multi-cycle hydrodynamic studies from lower to higher depressions with registration of bottomhole pressure with autonomous gauges.
These operations can be carried out in any combination and sequence.
Principle of operation
The device allows you to create depressions on formations without the use of compressor units.
The principle of operation eliminates the possibility of explosive gas-air mixtures and uncontrolled oil and gas manifestations in the well.
Reduces bottomhole pressure only in the sub-packer interval. The rest of the wellbore maintains normal hydrostatic pressure.
The presence of a check valve in the design allows the impact on the formation by cyclic depressions.
As a working fluid for device, a fluid used for well killing (water, saline solution, surfactant solution) is used.
Maximum working fluid pressure, MPa
Maximum depth of descent, m
Overall dimensions of the device case:
Maximum diameter, mm
Passing channel diameter, mm
Diameter of the sealing assembly moving along the tubing in the interval from the wellhead to the installation site of the device housing, mm
Coiled tubing diameter used when working with the device, mm
MTBF within 1 well operation, not less, hours
Warranty resource, not less than, pcs (well operation)
Resource when taking out mech. impurities, no more than, m3
Average recovery time (preparation for work), hour
The ratio of the decrease in hydrostatic pressure in the space under the packer from the pressure of the working fluid measured at the wellhead, not less than, % (provided that the inflow from the reservoir does not exceed 20 m3/day and the gas factor does not exceed 60 m3/m3)
Development of wells during field geophysical researchLearn more
Application of Clean Well technology (well bottomhole normalization after hydraulic fracturing) at Rosneft facilities in Khanty-Mansiysky Okrug