Prospects of development of geological-technological researches and mud logging in modern conditions of drillingof horizontal oil and gas wells

The role of geological-technological researches (GTR) at drilling oil and gas wells isquite topical at present. Available techniques and mud logging equipment demand essential alterations and development of new approachesin carrying out of researches. Specific solutions, features of drilling modes and applied configuration of the drilling tool complicateresearches of cuttings and mud. Hence, it is necessary to consider GTR data very attentively taking into account all features ofwell drilling. The variants of elimination or reduction of influence of the factors that impact research processes can be divided into threedirections: А. Reduction of influence of technical and technological factors. The GTR contractor should be given complete data onequipment, technologies, chemical agents, possible effect of neighbouring wells, timely mud laboratory analyses on their influence ongas logging and geological-geochemical researches. B. Alteration and working out of new techniques of carrying out GTR. The task ofcreation and adoption of uniform standards on GTR activities, taking into account the features of the region of works, still remains unsolved.This problem concerns not only researches in lateral wells. C. Equipment and software improvement is crucial. GTR softwareand equipment producers periodically make various attempts to create new products in this sphere. There is a variety of worthy andrather perspective products by domestic and foreign companies. In horizontal bores carrying out of a standard complex of geophysicalresearches of wells is impossible today; only separate kinds of logging are applied, which cannot give unambiguous answers to all thequestions. Still, mud logging is the most perspective direction of researches. There is a necessity of complex GTR and geophysical researchesdata interpretation accounting for all the features of drilling.

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