Buhruvativske Field, Well 79
The well was selected as a candidate for treatment due to a sharp decline in dynamic fluid levels and fluid production rates after workover operations, while the static level remained practically unchanged. This indicated contamination of the near-wellbore zone.
- Initial oil production rate – 0.63 t/day.
- Oil production rate after treatment – 2.4 t/day (a 3.8-fold increase).
- Lithology – sandstone and consolidated sandstone.
- Oil and gas saturation coefficient – 70–88%.
- Reservoir pressure – 205 atm (approximately 58% of hydrostatic).
- Wellhead pressure falloff curve:
- Before treatment – from 100 atm to 88 atm in 30 minutes.
- After treatment – from 100 atm to 55 atm in 15 minutes.
This indicates that the wave effect extends not only into the near-wellbore zone but also into the productive reservoir.
- Additional oil production:
- Over two months – 110.71 tons
- Over 17 months – 756.2 tons
- Additional gas production:
- Over two months – 4.21 thousand m³
- Over 17 months – 28.3 thousand m³
