DEVICE FOR MEASUREMENT OF ZENITH ANGLE OF BOREHOLE CURVE Russian patent published in 2009 - IPC E21B47/22 G01C9/00 

FIELD: mining.

SUBSTANCE: invention is designed for characterisation of space position of boreholes in directional drilled, deep and trial wells. The device consists of a frame in form of a hermetic chamber rotating on supports, of a source of power in form of a tank with compressed air eccentrically secured in the frame and of a fluid oscillator (FO); the said oscillator has a feeding nozzle connected with the compressed air tank, a receiving nozzle (RN), an outlet nozzle, a profile with a streamline surface and a communicating channel. Also FO is equipped with a membrane with a contact secured thereon and with a movable hollow plumb (MHP) secured on a shaft. In the upper part of MHP there is made RN which is designed to travel relative to the streamline surface of the profile and connection with the feeding nozzle, contact rings, contacts of information pick-up and a switching contactor. Also RN is additionally equipped with an additional nozzle; an aperture connected with the additional nozzle of RN is made in a profile with the streamline surface in the zone of reduced pressure. An outlet nozzle of FO is connected with a membrane and a membrane cavity. The contact secured on the membrane is connected with the contact rings via the switching contact; the contact rings are constantly closed with the information pick-up contacts connected with the communicating channel.

EFFECT: upgraded accuracy and reliability of measurement of angle of borehole curve and operative control of drilling wells along optimal trajectories.

2 dwg