Abstract: Disclosed are a signal transmission method, device and equipment based on drilling equipment, and a medium, the signal transmission is applied to a signal transmission system of the drilling equipment, the signal transmission system includes a master node and a plurality of slave nodes, and the master node communicates with the slave nodes through a 1-wire bus.

Abstract: Disclosed is a contactless connector, a signal processing method and a storage medium. The contactless connector can be in communication connection to a plug matched with the contactless connector. The plug is provided with a second magnetic core and a second coil, and the second coil is spirally arranged at the periphery of the second magnetic core and forms a secondary coil with the second magnetic core. The contactless connector includes: at least two plug interfaces, each of the plug interfaces including a first magnetic core; and a first coil, spirally arranged at an inner periphery of the first magnetic core of each of the plug interfaces and forming a main coil with the first magnetic core. When the contactless connector and a plurality of plugs are connected through at least two plug interfaces, the main coil and the secondary coil are electromagnetically coupled to realize communication connection between the contactless connector and the plurality of plugs.

Abstract: Disclosed is a signal processing circuit, a contactless connector, a signal processing method and a storage medium.

Abstract: The present invention provides a processing method and device for data of a well site test based on a knowledge graph. The processing method for the data of the well site test based on the knowledge graph comprises: carrying out format identification on received historical data of the well site test to generate format identification results; establishing a mind map according to the format identification results; generating the knowledge graph of the data of the well site test according to the mind map; and processing the historical data of the well site test and new data of the well site test according to the knowledge graph.

Abstract: The present application provides a double-table vibration testing device. The device includes two auxiliary devices and two vibration devices; each auxiliary device includes a lifting apparatus which is provided with a lifting portion; and a sliding member which is assembled on the lifting portion and slides relative to the lifting portion in a longitudinal direction. A drilling tool (an object to be tested) is held by the two auxiliary devices, so that the weight of the drilling tool does not exceed the maximum load-bearing capacity of the vibration devices. Therefore, the vibration devices are not easily damaged, and the drilling tool is not easy to overturn in the vibration testing process.

Abstract: The present invention belongs to the field of treatment for data identification and recording carriers, and specifically relates to a method and system for evaluating the filling characteristics of a deep paleokarst reservoir through well-to-seismic integration, which aims to solve the problems that by adopting the existing petroleum exploration technology, the reservoir with fast lateral change cannot be predicted, and the development characteristics of a carbonate cave type reservoir in a large-scale complex basin cannot be identified. The method comprises: acquiring data of standardized logging curves; obtaining a high-precision 3D seismic amplitude data body by mixed-phase wavelet estimation and maximum posteriori deconvolution and enhancing diffusion filtering. According to the method and the system, the effect of identifying the development characteristics of the carbonate karst cave type reservoir in the large-scale complex basin can be achieved, and the characterization precision is improved.

Abstract: Disclosed is a data transmission method. The method includes: sending, instruction information of data transmission to a slave node in a preset first cycle; judging, by the slave node, whether data should be sent according to the instruction information of data transmission; sending the data to the a master node if the slave node judges that the data needs to be sent; and sending, by other slave nodes, the data sequentially to the master node according to a preset slave node priority, an electric potential condition and a data state of the other slave nodes in a preset second cycle. In a preset first cycle, data is actively requested from a slave node, and in a preset second cycle, other slave nodes can actively send the data to a master node according to a preset slave node priority, an electric potential condition and a data state of the other slave nodes.

Abstract: Disclosed is a rotary steering drilling apparatus.

Abstract: Disclosed is a rotary steering drilling apparatus.

Abstract: The present disclosure provides an earthquake evaluation method based on multi-type geophysical data.

Abstract: An executing mechanism for a rotary guide device includes a driving valve core, a driven valve core, a first cavity, a second cavity and a high-pressure slurry driving channel. The first cavity includes a first low-pressure port communicating with a low-pressure slurry; and a first high-pressure port communicating with a high-pressure slurry. The driving valve core adjusts a pressure in the first cavity; and the driven valve core moves in response to a pressure difference between the first cavity and the second cavity. The high-pressure slurry driving channel switches between an open state and a close state in response to movement of the driven valve core. A rotary guide device includes a rotary main shaft, a drill bit, a push mechanism, and the executing mechanism. The push mechanism includes a push block and a push plunger piston, the high-pressure slurry driving channel communicates with one end, distal from the push block, of the push plunger piston.

Abstract: A push type rotary guide drilling system includes a drill bit and a rotating shaft, the rotating shaft including an upper rotating shaft and a lower rotating shaft; a steering portion, sleeving an outer side of the rotating shaft; a push assembly, including a plurality of push pieces spaced along a circumferential direction of the steering portion; a transmission device, including a transmission mechanism for driving the push pieces to extend out of the steering portion, the transmission mechanism including a driving electromagnetic gear arranged on the upper rotating shaft and a driven electromagnetic gear arranged on the steering portion and further including a motion conversion unit converting rotary motion of the driven electromagnetic gear into linear motion of the push pieces; and a control unit. The control unit is configured to modulate a magnetic field to make the driving electromagnetic gear and the driven electromagnetic gear realize linkage through magnetic coupling.

Abstract: Disclosed is a data transmission method. The method includes: sending, instruction information of data transmission to a slave node in a preset first cycle; judging, by the slave node, whether data should be sent according to the instruction information of data transmission; sending the data to the a master node if the slave node judges that the data needs to be sent; and sending, by other slave nodes, the data sequentially to the master node according to a preset slave node priority, an electric potential condition and a data state of the other slave nodes in a preset second cycle. In a preset first cycle, data is actively requested from a slave node, and in a preset second cycle, other slave nodes can actively send the data to a master node according to a preset slave node priority, an electric potential condition and a data state of the other slave nodes.

Abstract: The present invention provides a rotary guiding tool, comprising: a power unit having an output shaft capable of outputting a torque and an offset driving portion capable of outputting a radial force and/or an axial force; a transmission shaft connected with the output shaft; a support shaft connected with the transmission shaft through a rotation structure, wherein a rotation axis of the rotation structure is perpendicular to an axis of the output shaft, the support shaft has an inner wall defining an accommodating cavity and a forward end and a rearward end formed at both ends of the accommodating cavity, a rotation center of the rotation structure is located in the accommodating cavity, and the rearward end of the support shaft is capable of being driven by the radial force output by the offset driving portion; and a drill bit having a drill bit tail end, wherein the drill bit and the forward end of the support shaft are connected to the drill bit tail end.

Abstract: The present application discloses a push type rotary guide drilling system.

Abstract: The present application provides an executing mechanism for a rotary guide device and the rotary guide device.

Abstract: The disclosure relates to a fluid pressure measuring device for a measurement-while-drilling tool, which including a first sensor assembly (1), a second sensor assembly (2) and a sealing member (3), wherein a mounting groove (5) is formed on an outer side wall of a drill collar (4) of a measurement-while-drilling tool; the sealing member (3) is fixedly mounted on the mounting groove (5); a first liquid inlet hole (7) is formed in the sealing member (3); a second liquid inlet hole (9) communicated with a center flow channel (8) of the drill collar (4) is formed in the mounting groove (5); a liquid inlet end of the first sensor assembly (1) is communicated with the first liquid inlet hole (7); and a liquid inlet end of the second sensor assembly (2) is communicated with the second liquid inlet hole (9).

Abstract: In a method for acquiring data of azimuthal acoustic LWD, when an acoustic LWD instrument rotates with a drilling tool at a certain depth, data is acquired by adopting an azimuthal equal-interval mode: a well circumference is divided into m sectors by azimuthal intervals ??, when a toolface angle of the acoustic LWD instrument is located in the kth sector, an acoustic transmitting source is controlled to transmit an acoustic signal, and an acoustic receiver measures the acoustic signal, digitizes it and then stores it as data in the kth sector; and the data is acquired for each sector in turn, and after the data is acquired in each sector for N times, the data acquisition at the current depth is completed. Meanwhile, as the drilling tool rotates and drills, the instrument acquires acoustic data at different depths and processes it to achieve azimuthal acoustic imaging.

Abstract: A rotary guiding device includes a rotating shaft to rotationally drive a tool head. The rotating shaft includes upper and lower shaft portions, and a steerable portion, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion. A non-rotating body is mounted on the upper shaft portion, the non-rotating body is substantially non-rotating with respect to the rotating shaft in circumferential direction when the rotating shaft rotationally drives the tool head. The lower shaft portion includes a rib portion coinciding at least partially in axial direction with the non-rotating body. The non-rotating body includes at least three hydraulic driving mechanisms uniformly distributed along its circumferential direction, the three hydraulic driving mechanisms controllably generate radial drive forces respectively, the radial driving forces act on the rib portion overlapping the non-rotating body so the lower shaft portion can be deflectable relative to the steerable portion.

Abstract: An apparatus for measuring gravity acceleration of a drilling tool comprises sensors and a measurement circuit. The sensor comprises a three-axis gravity accelerometer, a reference measurement sensor and a temperature sensor. The three-axis gravity accelerometer measures acceleration component signals in three mutually orthogonal directions, and the reference measurement sensor generates a signal that varies with rotation and is not affected by vibration or shock to serve as a reference signal. The temperature sensor measures the temperature in the apparatus to compensate the temperature effect of the gravity accelerometers. The measurement circuit acquires output signals of the sensors and performs cross-correlation processing on the accelerometer components using the reference signal to extract gravity acceleration signals so as to eliminate centrifugal acceleration, vibration, shock and other interferences generated by rotation.