FIELD: polymer fibers. ^ SUBSTANCE: polyester fiber is prepared by catalytic polycondensation involving aromatic dicarboxylate. Catalyst contains a mixture of (i) titanium compound ingredient containing titanium alkoxide and at least one product of reaction of titanium alkoxide and a specific carboxylic acid or carboxylic acid anhydride and (ii) specific phosphorus compound ingredient. Catalyst ca...

FIELD: polymer fibers. ^ SUBSTANCE: invention relates to fabrication of fibrous articles, in particular fibrous structures from polyesters. These structures are obtained from polyester fiber prepared in presence of catalyst, which comprises (A) mixture consisting of (i) component in the form of Ti compound formed from one or several compounds selected from titanium alkoxides described by presented...

FIELD: oil industry, particularly to develop oil reservoir and to determine water permeability of productive reservoir. ^ SUBSTANCE: method involves operating well in steady-state regime before hydrodynamic research performance in well; carrying-out well hydrodynamic research by pressure recovery operation; determining bottom pressure and continuing reservoir fluid influx in well after well shut-d...

FIELD: measuring equipment, particularly used in oil production industry to control oil producing well operation without gas-and-liquid well product separation in fractions directly in wells or in oil accumulation areas. ^ SUBSTANCE: method involves directing gas-and-liquid flow in measuring device built-in main pipeline; measuring pressure, temperature and density of gas-and-liquid flow by pressu...

FIELD: survey of boreholes or wells, particularly measuring temperature or pressure in running wells. ^ SUBSTANCE: device comprises land-based assembly and submersed assembly including pressure transducer made as pressure unit linked to measuring resistor with output connected to land-based assembly inlet through diode and communication line. Land-based assembly includes power source, computing un...

FIELD: measuring technique. ^ SUBSTANCE: sensor comprises two rectangular frames and outer frame (1) and inner frame (4) that are interconnected by means of rigid cross-pieces (2) arranged along the axes of symmetry of the sensor. Each of the pair of the sides of frame (1) and frame (4) are interconnected through cross-piece (2). Four areas (5) are arranged in the corners of outer frame (1) for pe...

FIELD: navigation. ^ SUBSTANCE: micro-mechanical vibration gyroscope comprises two pairs of electrodes arranged along the axis of secondary vibration, device for exciting primary vibration connected between the capacitive pickups and arranged along the axis of the primary vibration, electrodes of comb motor, amplifier and differential link connected in series between the pairs of the electrodes ar...

FIELD: automation of record keeping for various services, operations, and other actions subject to recording. ^ SUBSTANCE: method for recording given parameters during provision of services includes providing individual information carriers to each specialist and each client involved in provision of services, for recording the data required for later record keeping. Certain keeping modes are set o...

FIELD: electrical engineering; recovering storage batteries. ^ SUBSTANCE: proposed method for recovering lead storage batteries includes washing of active material covering positive plates and grid with distilled water, its drying, crushing, heat treatment at temperature of 450 - 500 °C to yellow color, whereupon paste is prepared by mixing powder with distilled water followed by addition of sulfu...

FIELD: oil and gas production, particularly gas well logging. ^ SUBSTANCE: device comprises hollow cylindrical body with geared-down electric drive installed in it. Electric drive has tightened drive shaft and electronic circuit. Fluid-tight partitioning bush is arranged in body between electric drive and electronic circuit. The partitioning bush has orifice, which connects electric drive interior...

FIELD: survey of boreholes or wells, particularly means to supply power to well logging apparatus during well drilling. ^ SUBSTANCE: generator comprises turbine, end seal with slip rings, liquid lubricant pressure and thermal expansion compensator made as spring-loaded piston provided with rod at end thereof and filling device. liquid lubricant pressure and thermal expansion compensator passes in ...

FIELD: survey of boreholes or wells, particularly electric machines adapted to supply power to well logging apparatus of telemetering systems, which controls parameters during well drilling and are adapted for information transmission during oil and gas well drilling. ^ SUBSTANCE: lubrication system comprises filling device, cavity defined between outer rotor and stator and filled with liquid lubr...

FIELD: abrasive working processes and equipment, possibly working diamonds to brilliants. ^ SUBSTANCE: method comprises steps of preparing working surface of diamond wheel with shape 6A2 having diamond-metallic binder with diamond powder of fraction size 60/40 - 28/20 and with concentration 150 - 200%. Said wheel is made by powder metallurgy process. Diamond wheel is mounted on table secured to fa...

FIELD: mechanics. ^ SUBSTANCE: said invention relates to public utilities and commercial mechanical engineering, in particular, to methods for collecting secondary raw materials, as well as to automatic devices for secondary raw material collection and separation. The invention also relates to token automatic devices and may be used in entertainment industry. The said invention key feature is that...

FIELD: oil industry. ^ SUBSTANCE: invention refers to oil industry and can be used when determining liquid level in the tube space of the well equipped with electric centrifugal pump. Method of determining liquid level in the tube space of the oil well equipped with electric centrifugal pump involves determination of liquid level by using geophysical methods as per the measurement data of gamma-ga...

A technique is provided for completing a subterranean wellbore. A wellbore completion combines a distributed sensing system, such as a distributed temperature sensing system, with at least one flow control valve and a pumping system. The flow control valve is controllable without the need for intervention or with low-cost intervention.