On Methods of Advancing the Efficiency of Data Transmission of Mud Pulse Downhole Telemetry Systems

Due to the growth of the share of hard-to-recover oil and gas reserves, horizontal wells with greater lateral sec-tions are becoming the standard in the drilling industry. In the process of directional drilling, because of the sig-nificant distance from the bit to the geophysical sensors, and the low efficiency of data transmission from down-hole equipment to the surface in wells of this type, the likelihood of risks of deviation from the planned trajecto-ry increases. The current situation involves financial losses and additional technological costs, and in particularly unfavorable cases, it can even lead to significant environmental damage. Moreover, if the issue related to the re-duction of the zero-gap could be solved by implementing rotary-steerable systems and near-the-bit subs into op-eration, the search for a data transmission method that is high-speed and independent of interfering noise is still relevant. In this paper, we consider and analyze methods for transmitting data from the well to the surface in real time, promising ways to filter the hydraulic channel signal, ensuring minimization of risks associated with ob-taining false information and loss of communication in the well-surface system.