FIELD: oil production, particularly to recover, repair and commissioning of oil-and-gas pipes, namely casing pipes, flow string and equipment in-situ or at repair station.
SUBSTANCE: method involves cleaning pipes connected with each other through couplings of contaminants; performing all undermentioned technological operations with the use of automatic control system used as expert and/or system control system, namely carrying out input line control, pipe and coupling body diagnostics and analyzing, input complex control, additional technological pipe and coupling marking and so on. Closed threaded coupling connection with pipe, outer and inner pipe and coupling cleaning, pipe body sweeping-up and multiparameter threaded pipe and coupling section control including that in closed pipe-coupling connection, diagnostics of pipe and coupling body sections located under previously closed threads and having wall thicknesses close to minimal ones are carried out before linear control. After that pipes are grouped into potentially repairable ones in accordance with pipe body and thread parameters to obtain predetermined pipe class. Then the pipes are distributed into several flows having individually preset treatment regimes and operation types for following pipe treatment and after that the pipes are subjected to ultrasound and mechanical treatment. As couplings leave technological coupling treatment line and after coupling and multiparameter pipe control termination couplings are screwed together. Then anti-scuffing coating is applied on thread and rust-preventing coating is applied on inner pipe surfaces. Pipes connected with couplings are subjected to hydraulic tests along with acoustic emission control and are dried. Output multiparameter pipe thread control is carried out to control complex characteristics of pipe thread, including threaded sections. Then pipes are automatically marked. Input and output multiparameter control is performed at ultrasonic threaded pipe section treatment stage with the use of ultrasound threaded working tool as measuring gage. Equipment system for said method realization is also disclosed.
EFFECT: increased quality and reliability of preliminary treaded pipe section control during ultrasonic treatment operation, increased productivity and efficiency of pipe preparation for operation, decreased costs and leakage through threaded connections of recovered pipe strings.
186 cl, 7 dwg
