The possibilities of field geophysical surveys for the diagnosis of horizontal wells with different types of completion

Background. Over the past decades, the design of production directional and horizontal wells has changed significantly. Currently, wells have a more complex trajectory, and their development control requires new approaches. Field geophysical surveys are an integral element of system control at any stage of the development of oil and gas fields. Objective. To systematize the experience of conducting field geophysical surveys in horizontal wells with different types of shanks. Materials and methods. Field geophysical surveys, which are included in both the standard and extended complexes, are designed to evaluate directly working sections of the studied geological objects, determine the inflow profile or intake capacity of production wells and establish the composition of the inflow with the allocation of the main phases. Results. The work shows the experience of conducting field geophysical surveys, and their informative possibilities depending on the type of horizontal completion of the well. The most informative research methods and technologies for studying an object with various layout variations are considered. The analysis of the influence of the complexities of the operation of low-permeability reservoirs and the choice of the optimal set of methods are carried out; recommendations on the optimal completion for horizontal wells are given. Conclusions. The obtained results will ensure the most cost-effective operation and the obtainment of more informative field geophysical survey results, which will allow to timely adjust well operation and conduct geological and technological measures.