PNIPU has developed a groundbreaking system for monitoring the trajectory of horizontal drilling operations.

Horizontal drilling is one of the most effective methods for enhancing oil recovery from reservoirs. However, this process can be complicated by various factors, such as pressure and absorbent formations, which are difficult to predict during the design phase. Researchers at Perm Polytechnic University have developed a unique high-tech system for constructing horizontal wells. This system can operate based on specified algorithms, manage the trajectory of the wellbore, and relay information about the reservoir's condition to oil industry professionals.

2024-11-02 10:00:42https://naked-science.ru/article/column/traektorii-pri-burenii-go

A patent has been obtained for the telemetry system. This development was carried out as part of the strategic academic leadership program "Priority 2030."

During drilling, the well becomes narrow: the diameter is only 20 centimeters, and its depth can reach three to four kilometers. Navigation underground is challenging, which is why researchers from PNIPU proposed using a telemetry system that performs navigation functions and collects all necessary information for drilling horizontal wells. It acts like "eyes," assisting specialists in accurately following the designated trajectory, reducing time, and fully controlling the process underground.

“The system transmits signals to the surface in real-time. It is important to consider that in deep drilling conditions, there is immense pressure and constant vibrations. All these factors make work extremely complex. Therefore, the navigation system for wells plays a critically important role in ensuring the accuracy and safety of the entire process,” says Alexander Melekhin, Associate Professor of the "Oil and Gas Technologies" department at PNIPU, Ph.D. in Technical Sciences.

The operation proceeds as follows: the coordinates of the bottom are input into the system, and a trajectory to the target is laid out through critical points. During drilling, a device equipped with an optical fiber gyroscope follows the designated route precisely, gathering information within the layer and transmitting it upwards. The drilling team monitors this process, and in case of deviations from the trajectory or other emergency situations, specialists receive signals. This helps them quickly orient themselves and direct the system along the required "route."

“My colleagues and I have already completed the first pilot industrial test, meaning our system is 'in hardware' and ready for use. However, during the testing, we realized that there are still improvements needed. We have established requirements for the instrument base based on the developed mathematical model of heat and mass transfer processes in the well. We are currently addressing the shortcomings and plan to move on to the second stage of testing by the end of this year,” adds Alexander Melekhin.

The polytechnic specialists have already signed a cooperation agreement with LLC "PKNRUS." Thanks to the work of PNIPU scientists, oil and gas companies will have the opportunity to drill horizontal wells in high latitudes and sanctioned fields, which contributes to strengthening the technological sovereignty of our country.