Paleozoic deposits, characterized by complex geological structure, require a special approach to lateral properties variation prediction. Typical correlation associations and dependencies showed limited relevance of statistical methods and low predictive potential for seismic analysis. Comparable complex structured reservoirs can be confidently predicted by traditional approach of geological similarity. Regardless of complications mentioned, Paleozoic reservoirs production is effective and close to planned values at the moment After a logical move beyond slanted well to horizontal ones, it is planned to drill multilateral wells as a next step to reduce uncertainties influence on production and to increase oil production profitability. Non-conventional informational capacity of exploitation monitoring complex for Paleozoic deposits is shown in the paper in addition. Some examples are introduced and well test data usage for porous and filtration media type selection is demonstrated aiming at hydrodinamic model enhancement.

In current research authors look for and analyze an alternative to traditional production logging tools (PLT) and high-technological multisensor tools in horizontal wells. Trancient temperature profiles measurements using fiberoptic distributed stationary sensors (DST) are chosen. Functionality analysis of this method is carried out within a mathematical model.Authors conduct mathematic modeling of heat and mass transfer in horizontal well. It demonstrates that a certain interpretation can be done if the measurements are held during transient processes. These processes occur when the well is started, stopped or when the regime of production is changed (different rate, choke or ESP frequency). However such measurements are not so technically simple to realize, because of low duration of these processes (up to first dozens of minutes). Distributed temperature sensors have a high potential for successful measurement of such processes.Most of the typical cases of horizontal well inflow are calculated and deeply analyzed. It resulted in smart methodological approaches to measuring, interpretation algorithm and application limits. The essential significance of the research is deep understanding of DTS information capacity and improvment of the procedure of running the test and interpretation methods.

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The active building of HW with MSHF use for ensuring their effective development in low-permeability reservoirs, but there are certain difficulties with getting completely information for making the right decisions during control of development. As part of the work performed, the main uncertainties and the further application of research results for estimates the profile of horizontal well (HW) with multi-stage hydraulic fracturing (MSHF) for planning the necessary geological and technical actions based on more than 20 operations at the South Priobskoye field are shown. The following field geophysical tests were executed in wells: PLT with Y-tool and CT + spectral noise logging module;PLT during compression with CT + multi-sensor flow meter;PLT with a well tractor;tracer studies (proppant, frac sleeves);thermometry with using fiber-optic system in injection and production wells.