SYSTEM AND METHOD OF SURVEY IN PROCESS OF DRILLING Russian patent published in 2009 - IPC E21B47/12 G01V1/40 

FIELD: oil and gas production.

SUBSTANCE: invention is related to survey of wells in process of drilling and is intended for detection of annular pressure in process of drilling. System is installed in drilling tool suspended on boring tower by means of drill column. System comprises at least one boring collar, device for survey in process of drilling and at least one external detector. Boring collar has lateral walls in process of pipe that create channel for flowing of drilling mud through it. Device for survey in process of drilling is installed in channel of at least one drilling collar and may be selectively extracted from it. External detector is located in side wall of drill collar and is insulated from channel. Besides, external detector is opened into well to make measurements and is equipped by wireless communication with device for survey in process of drilling.

EFFECT: improved reliability of measurements due to provision of possibility to continuously measure well parametres in process of drilling on a real time basis under conditions of high temperatures and pressures.

35 cl, 8 dwg