Abstract: A patching construction method using a hydraulic variable-grade expansion tool for blocking during drilling is provided, which includes a conversion joint, a supporting central pipe, a supporting ring, an expansion pipe, pressure gradient piston subs, double female thread connection subs, T-shaped limiting subs, a tapered centering sub, double male thread central shafts, split supporting subs, an expansion cone, a piston sub with male and female threads, a T-shaped ball compressor, a lower U-shaped pressing sleeve, a ball-seat fixing sleeve, a reciprocating spring, a sealing ball seat, a sealing ball, a tapered guide sub, etc.

Abstract: A hydraulic oscillation tool with variable stage, small pressure drop and strong impact based on radio frequency identification is provided. It includes a conversion connector, a disc spring upper bracket, a disc spring housing, a disc spring group, a multi-stage piston shaft, an upper piston sleeve, a first radial sealing ring, a double-female-buckle piston sleeve, a double-male-buckle piston sleeve, a second radial sealing ring, a double-female-buckle lower piston sleeve, an end piston, an impacting connector, a power housing, a power shaft end cap, a high torque turbine, a power shaft, a lower connector, a rotating valve, a bearing supporting ring, and a turbine special bearing. The hydraulic oscillation tool realizes the low pressure drop and strong impact, and thus the problems that with the continuous increase of horizontal length, excessive pressure drop will make the annular pressure drop sharply, and drilling fluid circulation is difficult are solved.

Abstract: A hydraulic oscillation tool with variable stage, small pressure drop and strong impact based on radio frequency identification is provided. It includes a conversion connector, a disc spring upper bracket, a disc spring housing, a disc spring group, a multi-stage piston shaft, an upper piston sleeve, a first radial sealing ring, a double-female-buckle piston sleeve, a double-male-buckle piston sleeve, a second radial sealing ring, a double-female-buckle lower piston sleeve, an end piston, an impacting connector, a power housing, a power shaft end cap, a high torque turbine, a power shaft, a lower connector, a rotating valve, a bearing supporting ring, and a turbine special bearing. The hydraulic oscillation tool realizes the low pressure drop and strong impact, and thus the problems that with the continuous increase of horizontal length, excessive pressure drop will make the annular pressure drop sharply, and drilling fluid circulation is difficult are solved.

Abstract: A patching construction method using a hydraulic variable-grade expansion tool for blocking during is provided, which includes a conversion joint, a supporting central pipe, a supporting ring, an expansion pipe, pressure gradient piston subs, double female thread connection subs, T-shaped limiting subs, a tapered centering sub, double male thread central shafts, split supporting subs, an expansion cone, a piston sub with male and female threads, a T-shaped ball compressor, a lower U-shaped pressing sleeve, a ball-seat fixing sleeve, a reciprocating spring, a sealing ball seat, a sealing ball, a tapered guide sub, etc. A patching construction method using a hydraulic variable-grade expansion tool for blocking during, omits the conventional expansion cone sealing manner, and designs a variable pressure gradient expansion tool, so that achieves the objectives of low pressure, large expansion force and reliable sealing, avoids drilling out bottom sealing joint, and reduces the risk of expansion failure.

Abstract: The present invention provides a hearing protection earphone, a hearing protection method and a computer program storage medium, comprising a sound control system including a wearing-status sensing module for monitoring a current wearing status of the hearing protection earphone, sending a first monitoring signal when it is determined that the hearing protection earphone is in a wearing state, and sending a second monitoring signal when it is determined that the hearing protection earphone is in a non-wearing state; and a main control module for enabling a play function corresponding to a play mode which is adapted to the hearing protection earphone currently when the first monitoring signal sent from the wearing-status sensing module is received, and counting a stand-by time of the protection earphone and turning off the hearing protection earphone after a preset stand-by time elapses when the second monitoring signal sent from the wearing-status sensing module is received.

Abstract: The present invention provides a hearing protection earphone, a hearing protection method and a computer program storage medium, comprising a sound control system including a wearing-status sensing module for monitoring a current wearing status of the hearing protection earphone, sending a first monitoring signal when it is determined that the hearing protection earphone is in a wearing state, and sending a second monitoring signal when it is determined that the hearing protection earphone is in a non-wearing state; and a main control module for enabling a play function corresponding to a play mode which is adapted to the hearing protection earphone currently when the first monitoring signal sent from the wearing-status sensing module is received, and counting a stand-by time of the protection earphone and turning off the hearing protection earphone after a preset stand-by time elapses when the second monitoring signal sent from the wearing-status sensing module is received.