Hard-to-recover reserves comprise about 70 percent of the LLC Trust Neftegaz project portfolio. These include residual deposits in depleted fields, low-concentration and low-porosity reservoirs, the development of which is only possible through the use of high-technology horizontal and multilateral wells — the construction of which is being undertaken by LLC Trust Neftegaz through the use of cutting-edge downhole equipment, remote online monitoring technology, and organizational technologies directed at optimizing the drilling process and reducing costs.