For the first time in Ukraine, specialists from Ukrgazpromgeofizyka division applied a new technology to perform an extremely complicated geophysical operation.

The technology is called TLC (Tough Logging Conditions) and involves connecting the geophysical logging string to the drilling tool.

Usually, in order to conduct geophysical logging survey while drilling new wells, the specialized logging equipment is tripped down the hole on a wireline. However, due to complicated technical condition in one of our wells, such operation could not be performed there.

Therefore, our colleagues used TLC technology to perform logging operation in complicated borehole conditions at a depth of 4300 m. As a results of this operation, gas-producing horizons were identified in the new well.

- Such geophysical operations are considered to be complex. Running down the logging string on a drilling tool requires great accuracy and concentration, especially since the well exposed to this operation had a significant directional angle and bottomhole deviation from the wellhead projection, which added complexity to the work. Any error during run-in-hole operation or incorrect tools connection could result in their loss. Thanks to well-coordinated work of the integrated team of drillers and geophysicists, this operation was performed smoothly and safely. Since our company has a lot of wells with complicated conditions, we are planning to scale out this type of complex operations to cover them. Our specialists are constantly improving their skills and get trained to work with modern geophysical tools, - Yuriy Kalmuk, the Head of Ukrgazpromgeofizyka Geophysical Division, said.