Full Title Technology for Increasing the Productivity of Oil and Water Intake Wells by the Effect of an Elastic Vibration Field to the Near-Well Areas Tech Area / Field

• OBS-NAT: Other Basic Sciences / Natural Resources and Earth Sciences
• MAN-MCH: Manufacturing Technology / Machinery and Tools
• NNE-FUE: Non-Nuclear Energy / Fuels

Brief Description of Technology
It is well known that every oil or water intake well loses efficiency during use. This could be a result of a decrease in formation pressure; sealing of the porous near-well rock area of a productive formation with salts, paraffin, mechanical particles, etc.; or sedimentation that resulted in a decrease in the effective cross section of the fluid flow entering the well. In the last case, it is possible to recover (partially or even completely) the productivity of the well by cleaning the porous near-well rock area or by changing its structure.

A wide number of techniques have been supposed to be capable of solving this problem. There are, for instance, the effect of high pressure and different chemicals, like acids, surface-active agents, etc., that require the well to be shut down and are ecologically dangerous.

It is also well known that the effect of the elastic vibrations field on the porous area near the perforated zone of the well enable us to solve the task of cleaning the well from colmatants. There are many modifications of techniques and instrumentation to create such a field of elastic vibrations in near-well space. However, with the known technologies, acoustic effects do not exceed the limits of the well projectile trip in the perforation area of the well, and neither does the treatment of the near-well rock area by an acoustic field with relatively low emission intensity. Failing to take account of the specific features of product formation and the state of the surrounding rock could result in zero or even negative consequences.

The proposed technology realizes intensive exploitation of oil and water intake wells using the effect of an elastic vibration field applied to the near-well rock area of a productive formation, taking into account the composition and specific properties of the formation treated, the state of the near-well rock area, the process efficiency monitoring during the treatment, and correction of the exploitation mode of the well after treatment, which enables us to increase the productivity of the oil and water intake low discharge wells.

Legal Aspects
This work is carried out by employees of VNIIA and VNIIYAGG.

The patent on the proposed technology is at the registration stage.

Special Facilities in Use and Their Specifications
Instrumentation for measurement of the acoustic parameters of emitters at pressures of up to few hundred atmospheres and temperature of up to 150°C.

Scientific Papers
Juikov Yu.F., Aleksandrov V.B., et al., “Method for revealing oil and gas formations”, Pat.#934403, BI #2, 1982.

Juikov Yu.F. and Efimova S.A., The results of industrial investigations of acoustic effect to the near-well rock area of a productive formation, Neftyanoe Khozyaistvo (Oil Industry), #5, 1986.

Дата добавления: 2015-07-20