In the Orenburg region, specialists drilled a directional well with a horizontal departure of 1920 meters, a record for the region. The project was implemented by engineers from Orenburgneft, a key production asset of Rosneft in the Volga region. The depth of the well exceeded 4 kilometers, and tests yielded a fountain flow of light oil with a flow rate of up to 153 cubic meters per day.
The drilling was carried out under strict restrictions on access to the land plot, which required non-standard engineering calculations. A domestic calibrator, manufactured to the specific dimensions of the pilot site, was used to drill the borehole.
The device made it possible to simultaneously expand the channel to a diameter of 224 millimeters and avoid additional tripping operations, which reduced working time and reduced technological risks.
The stability of the walls and the reduction of friction were ensured by a gel-emulsion drilling fluid on an oil basis. The engineers also combined a multi-centering bottom hole assembly with a downhole oscillator. The set of measures suppressed static friction and reduced torque, allowing precise control of the trajectory at great depths.
Testing confirmed the high productivity of the formation. The data obtained confirmed the status of the Kichkassky area as a promising area for further geological study and industrial development.
