Intensification of Formations by Cavitation-Vortical Influence on a Bed
Depression-wave treatment of the critical area of formation is carried
out in a large scale of high-frequency waves.
The sound capillary effects may occur under the influence of pressure
waves. They may be accompanied by abnormally high 'momentary' filtration
of a bed or flushing fluid through capillary channels into a colmatation
layer that will cause destruction action on the bed by a wedging fluid
films pressure and surfactants which are formed on the surfaces of the
colmatant or rock particles. These films play the role of lubrication
between hard particles and attenuate the structural and mechanical
stability of a colmatation plug and adhesive interaction of a comaltant
with a rock surface.
The well assembly UVTV-118 is shown on the picture below. It consists
of a UPN-118-146-2 device (a jet pump with a hydraulic packer) or NSP-118
device (a jet pipe with a hydraulic packer and their off-on switch unit),
a cascade of vortical cavitation-wave generators UVK-116 and a container
for thermochemical blocks ...
