Exploration & Drilling
Exploration
Exploration, Development and Production Sharing Agreement for Karachaganak Perspective Structure was signed on February 27, 2016.
On 21 October 2020, the drilling of Exploration Well No. 89 began at the Bulla-Deniz Area 2, on the far southeast side of the Karachaganak Field.
- The target well depth is 6400 m, and the target horizon is Horizon 7 of the Productive Strata (PS). Drilling was completed at a depth of 6505 m on April 25, 2011. The well penetrated PS Horizon VIII. The well was logged. PS Horizons V and VII (similar to Pereryv), and VIII (similar to the Girmaki Sand Horizon) were appraised as potential oil and gas bearing structures. At present preparations are being made for well completion.
Drilling
The use of cutting-edge technologies, including telecommunications technologies, allows data to be transferred to the Drilling Support Centre in real time, during drilling.
Kaz Energy Oil Drilling Support Centre was established specifically to improve effectiveness in the construction of high-technology wells. Its work is predominantly based around geo-steering technology, which involves obtaining information on the geological model of a field in real time, with adjustments made to the well trajectory in line with this.
Rotary steerable systems (RSS)
Utilising RSS makes possible the construction of extreme reach wells, as well as the high-precision drilling of wells in low-concentration reservoirs (one to two metres thick).
- The construction of high-technology wells demands a range of specialist equipment. The basis for modern, effective, precise and safe drilling these days lies in rotary steerable systems (RSS).
- In 2015, however, the first Russian-produced RSS, developed by St Petersburg’s CSRI Electropribor, successfully completed testing at Kaz Energy Oil’s Sangachal field.