A system of permanent monitoring of downhole parameters in multi-layer wells equipped with electric submersible pumps
For the moment, more than half of the RF existing oil wells fund is equipped with electric submersible pumps (ESP), which provide the "lion" share of oil production in the country. Geophysical and hydrodynamic surveys of such wells are limited, on the one hand, by the apparatus delivery complexity (for an individual pump), while on the other hand, by significant losses in oil production because of wells prolonged shut-offs for studying. Negative consequence of a joint study of several objects is the inaccuracy in the reservoir characteristics determination for each formation and large errors in the reservoir pressure estimation. In addition, the most part of the multi-layer wells fund is not equipped with the systems that provide separate accounting of oil and fluid in layers. All this leads to an increase in the volume of false source information when monitoring the development of multi-layer objects. To solve this problem, JSC "NPF "Geofizika" developed hardware-software complex "Sprut", which is nowadays widely used in the oil-producing regions of the Russian Federation.