FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil industry and is intended for simultaneous measurement of pressure outside and inside production strings and can be used for installation on oil well equipment in order to obtain information for systems for regulating production in the oil fields of the country. Proposed device for simultaneous measurement of pressure outside and inside the production string in operating mechanized oil wells contains a borehole chamber in the form of a standard production string with threaded connections at the ends and a remote deep two-sensor manometer permanently fixed to the production string so that one sensor of the manometer is hydraulically connected to the inner space of the production string, and another sensor - to the outer space of the production string, with the possibility of duplicating these devices along the length of the production string, providing power and communication with through pass through all devices of a direct supply single communication wire and using as a return wire of the production string itself. This technical solution allows several pressure sensors to be installed on the production string in a row and to be placed without a depth shift, and it also does not allow to change the geometry of the hydraulic channel inside the production string, which makes it possible to apply the proposed invention in wells with a sucker-rod pumping unit. In addition, this solution allows to stop using a geophysical cable and to apply a single communication wire, which does not require the use of instrument and cable heads, resulting in increased reliability of the results of measurements of pressure outside and inside the production string needed for the well control system.
EFFECT: technical result of the proposed invention is elimination of said drawbacks of the prototype and obtaining of additional advantages in automatic control of well operation.
1 cl, 2 dwg
