33results about How to "Efficient rock breaking" patented technology

The invention relates to a new welling drilling method for efficient rock breaking by means of heating power jet flow, and a complete set of construction scheme. According to the system composition, a continuous coil tubing unit, an electric measuring instrument truck, a cable, an air injection pipeline, a fuel injection pipeline, a fuel reaction cavity, a heating power jet flow nozzle, a ground pump set and the like are included. According to the technology, on the basis of the principle that the continuous heated surfaces of rocks crack until the rocks are decomposed in a splitting mode, the heating power jet flow acts on the rocks on the deep well hard formation, the non-contact efficient rock breaking is achieved under heat transfer and impact force of high-temperature and high-pressure fluid media, and the energy utilization rate of the well bottom is improved; the technological process is simple, the continuous oil tube well drilling technology is combined, a drill bit does not need to be replaced, the time of the tripping operation is shortened, abrasion to a tubular column is reduced, and the cost of the drilling operation is reduced. According to the new welling drilling method for efficient rock breaking by means of heating power jet flow, the heating power jet flow technology is creatively guided into the continuous oil tube well drilling, popularization and application of the continuous tube technology are facilitated, and oil and gas resources are efficiently exploited.

The invention discloses an adjustable and controllable pulse oscillation PDC drill bit. The adjustable and controllable pulse oscillation PDC drill bit comprises a drill bit joint, a drill bit body, arectangular sealing ring a, a support spring, a sliding piston, a rectangular sealing ring b, a pulse oscillation nipple, a rectangular sealing ring c and a cylindrical pin. Drilling fluid enters thedrill bit from the drill bit joint, passes through the sliding piston and then flows out of a drill bit water hole, when the drill bit does not need to have a pulse oscillation function, the conventional drilling fluid pressure only needs to be kept, and the sliding piston is kept to make contact with the drill bit joint; and when the drill bit needs to have the pulse oscillation function, the drilling fluid pressure is increased, the sliding piston is pushed to move downwards and communicates with the pulse oscillation nipple, and the drilling fluid enters the pulse oscillation nipple, so that the pulse oscillation nipple generates a pulse oscillation effect, and thus efficient rock breaking of the drill bit is achieved. According to the adjustable and controllable pulse oscillation PDCdrill bit, the pulse oscillation function can be adjusted and controlled, the application range is wide, the phenomena of stick slip, bit balling and the like of the drill bit can be relieved, and theservice life of the drill bit is prolonged.

The invention discloses a cutter head, a full-face hard rock tunneling machine based on drilling and blasting construction and a rock breaking method. The cutter head is divided into N areas, and a first inserting knife is arranged between two adjacent areas, and each The other boundary position of the area is provided with a second inserting knife, the impactor and the first arm frame connected with the impactor are arranged in the cutter head, and the first inserting knife or the second inserting knife of each area is provided with a gap for the impactor Extending and retracting, the boundary of each area is provided with a guide rail to form a circular guide rail for the impactor to move. A second arm frame is arranged inside the cutter head, and a slewing device is installed on the second arm frame. One side of the slewing device is provided with a Drill, the other side of which is provided with a filling device, and each area is provided with a drill for extending and retracting, and a rotary device for rotating after the drill is retracted so that the filling device is located at the side of the drill. Retracted position for extending and retracting through holes. It can combine the safety of the shield method and the high efficiency of the drill and blast method at the same time. Increase efficiency and increase safety.

The invention discloses a dual-channel drill bit with drilling fluid switching function, which comprises a connected drill body and a dual-channel joint. The dual-channel joint includes a joint outer pipe, a joint inner pipe, a slide valve assembly located in the inner cavity of the joint inner pipe, and an inner joint There is an annular passage between the pipe and the outer pipe of the joint, and the inner pipe of the joint is provided with an inner pipe flow hole that communicates with the annular passage; the slide valve assembly includes a core pipe and a slide valve that is slidingly sealed between the joint inner pipe and the core pipe. The slide valve divides the inner tube cavity of the joint into the upper cavity of the inner tube and the lower cavity of the inner tube. The top of the core tube is closed and the bottom is open. The upper tube wall of the core tube is equipped with the upper part of the core tube. Flow holes; when drilling with the dual-channel drill bit of the present invention, under the action of the high and low temperature drilling hydraulic pressure difference, between the flow holes at the upper part of the core pipe and the upper chamber of the inner pipe, and between the flow holes at the lower part of the core pipe and the lower chamber of the inner pipe Periodically turn on or off, automatically switch between high and low temperature drilling fluids alternately, realizing variable temperature drilling and efficient rock breaking.

The invention relates to a stagnation-prevention drilling tool capable of reducing a stick slip phenomenon through a multi-head helical pair. The stagnation-prevention drilling tool is installed on the upper portion of a drill bit in a thread connection mode and comprises an upper assembly, a vibration absorption assembly and a lower assembly. The rear end of the vibration absorption assembly is provided with an upper connector assembly, and the front end of the vibration absorption assembly is provided with the lower assembly. Vibration generated in the work process of the tool is absorbed through disc springs connected in series, a pressure cavity and a rubber spring. Through matching of a spiral outer shell and a spiral transmission shaft, the multi-head helical pair is formed. When the reaction torque acting on the drill bit is increased and a stick slip or clamping phenomenon occurs, the spiral transmission shaft rotates backwards relative to the spiral outer shell, and therefore small-amplitude reverse rotation is applied to the drill bit. The reaction force of the ground to the drill bit is lowered, stress of the drill bit reaches balance again, and therefore efficient rock breaking with the drill bit is realized. According to the stagnation-prevention drilling tool capable of reducing the stick slip phenomenon through the multi-head helical pair, the vibration generated during rock breaking with the drill bit can be absorbed, the stick slip phenomenon is reduced, and continuous drilling of the drill bit is guaranteed.

The invention relates to a novel hydraulic oscillator with energy gathering and damping functions. The novel hydraulic oscillator is fixedly mounted in the position close to a drill bit and comprises a damping assembly, a transmission assembly and an oscillating assembly. The oscillating assembly is mounted at the front end of the transmission assembly. The damping assembly is mounted at the rear end of the transmission assembly. Vibration generated on an upper tool by the oscillator during operating is absorbed through multiple stages of vibration absorption rings; bit pressure and torque are transmitted through a disk spring and splines, and the disk spring and the splines are connected in series. When flowing through a flow guide pipe, drilling fluid flows into a pressure chamber through flow guide holes in the circumference of the flow guide pipe and then flows back to a central flow channel, pressure pulsation of the drilling fluid fluctuates, and the oscillating assembly generates an oscillating effect. The novel hydraulic oscillator with the energy gathering and damping functions can generate the oscillating frequency of a certain range to reduce friction drag borne by a drilling tool in the rock breaking process of the drill bit, automatically absorb vibration and reduce the influence of the oscillating assembly on the upper drilling tool during operating, so that the well drilling efficiency is improved.

The invention relates to a self-feeding rotary jet flow multi-hole spray nozzle, which comprises a spray nozzle cap, a back end shaft, a screw and the like. The self-feeding rotary jet flow multi-hole spray nozzle has the basic work principle that a plurality of forward holes are uniformly formed in a certain circle, leaving away from the center for a certain distance, of the front end surface of the spray nozzle, a plurality of center axes of the holes are in the located plane of a certain tangent line of the circle and are distributed in a way of forming different angles with an axial line of the spray nozzle cap, and the projection of the axial lines of the holes in the front end surface is a tangent line of the same circle, so the jet flow has high tangential speed, and the efficient rock breaking is favorably realized; the jet flow dispersion is realized, the acting range is wide, and large-aperture holes are favorably formed; the spray nozzle cap realizes autorotation through the jet flow reaction, each hole is scanned along the self rail for completing the rock breaking, and the formed holes are more regular; the spray nozzle cap realizes the autorotation, and the self feeding of the spray nozzle is favorably realized. The backward spray nozzle provides the self-feeding force, and meanwhile, the autorotation of the spray nozzle cap can be controlled. The self-feeding rotary jet flow multi-hole spray nozzle has the advantages that the structure is simple, the efficient rock breaking can be realized, and large-diameter regular holes are formed.