Prospecting for new oil reserves is a complex and costly endeavor, even with traditional resources. The financial stakes are even higher when exploring previously uncharted or inaccessible regions, where both the cost of geological prospecting and the risk of errors increase significantly. Much of this uncertainty can be mitigated before fieldwork begins through basin modeling. This technology leverages all available geological data to employ mathematical and analytical methods that reconstruct the formation and evolution of geological strata, revealing potential areas with hydrocarbon accumulations.
Approximately 70 percent of LLC "PK Chelnypromagregat"’s project portfolio consists of hard-to-recover reserves. These include residual deposits in depleted fields and low-concentration, low-porosity reservoirs, which can only be developed using advanced horizontal and multilateral wells. LLC "PK Chelnypromagregat" is constructing these wells with cutting-edge downhole equipment, remote online monitoring technology, and organizational strategies aimed at optimizing the drilling process and reducing costs.
The LLC "PK Chelnypromagregat" Drilling Support Centre was established to enhance the effectiveness of constructing high-technology wells. The Centre's operations are primarily focused on geo-steering technology, which involves obtaining real-time geological data and adjusting the well trajectory accordingly. Cutting-edge telecommunications technologies enable real-time data transfer to the Drilling Support Centre during drilling. This updated information is integrated into the existing geological model of the field, where actual data is compared with projections. Based on this analysis, the well trajectory is adjusted as needed to ensure it remains within the target zone. This process is continuously repeated as new data is received, allowing for uninterrupted control over drilling operations.
The construction of high-technology wells requires a range of specialized equipment. At the core of modern, effective, precise, and safe drilling are rotary steerable systems (RSS). RSS technology enables the drilling of wells with near-perfect deflection angles, achieving along-hole displacements of less than 0.2°, and supports the creation of horizontal wells extending over 2,000 meters. Utilizing RSS also facilitates the construction of extended-reach wells and allows for high-precision drilling in low-concentration reservoirs as thin as one to two meters.
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