Pulse with sealing sleeve

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Purpose

The Pulse jet pump is designed to induce flow from the formation for well survey and near-wellbore impact, and in particular for fields with abnormally low formation pressures and high (up to 1 Darsi) formation permeability.

Capabilities

Pulse with sealing sleeve allows you to carry out the following technological operations:
  • Reduction of bottomhole pressure and stimulation of inflow from the formation;
  • Impact on the formation by water hammer;
  • Geophysical surveys in the mode of set values of depressions by geophysical instruments on the logging cable not exceeding 43 millimeters in diameter;
  • Multi-cycle hydrodynamic studies from lower to higher depressions with registration of bottomhole pressure with autonomous gauges;
  • Impact on formations with small-sized devices, not exceeding 43 millimeters in diameter (acoustic radiators, heaters, etc.) in depression modes.
These operations can be carried out in any combination and sequence.
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.

Features

A distinctive feature of this jet pump is the presence of a sealing sleeve which makes it possible to carry out bottom-hole treatment formation without discharging an additional acid insert and without involving a geophysical party.

Specifications

Maximum working fluid pressure when working without a cable, MPa
25
Maximum working fluid pressure when working with a fixed cable, MPa
21
Maximum working fluid pressure when working with a movable cable, MPa
18
Maximum depth of descent, m
4000
Overall dimensions of the device case:
Maximum diameter, mm
118
Length, mm
465
Passing channel diameter, mm
51
Maximum diameter of functional inserts moved along the tubing in the interval from the wellhead to the installation site of the device body, mm
57
Time to failure, not less than, hour
40
Warranty resource, hour
220
Resource when taking out mech. impurities, no more than, m3
40
Average recovery time (preparation for work), hour
5
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)
100
Service
Development of wells during field geophysical research Learn more

Implemented projects

Application of Clean Well technology (well bottomhole normalization after hydraulic fracturing) at Rosneft facilities in Khanty-Mansiysky Okrug

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Project PitMSFrac, Bashkortostan

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Development of wells with a jet pump during geological exploration in the Yamalo-Nenets Autonomous District

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Project “PEV – Online”, Irkutsk region

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