Chinese Academy of Sciences

Qijun Xie

Yang Liu

Yongyou Yang

Qingyun Di

Qingbo Liu

Linfeng Hong

Wenxuan Chen

Xinzhen He

Jiansheng Du

Xiangyang Wang

Tsili Wang

Zhongxing Wang

Zili Wang

Tianxin Zhang

Jingjing Wang

Disclosed is a signal processing circuit, a contactless connector, a signal processing method and a storage medium. One end of a cable of the signal processing circuit can be connected to a device and the other end of the cable of the signal processing circuit is connected to a port processing unit for receiving a signal transmitted by the device and/or transmitting a signal to the device; one end of the port processing unit is connected to the cable, and the other end of the port processing unit is connected to a signal processing unit for acquiring a data communication transmission mode of a port of the device connected to a connector, and performing interface configuration on the cable according to the data communication transmission mode; and the signal processing unit is connected to the main coil or the secondary coil, and is configured to, if receiving the signal transmitted by the device, transmit the signal to the main coil and/or the secondary coil, and/or is configured to, if receiving the signal transmitted by the main coil and/or the secondary coil, transmit the signal to the device according to the data communication transmission mode. According to the present application, the contactless connector adapts to different transmission protocols of the device port while remote wireless signal transmission is realized.

Signal processing circuit, contactless connector, signal processing method and storage medium

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. According to the present application, it can be achieved that the wiring difficulty between devices may be reduced while the service life of the connector is ensured.

Contactless connector, signal processing method and storage medium

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. The signal transmission method includes: sending, by the master node, an instruction signal coupled by a TTL signal and a data request signal to a specified slave node, wherein the data request signal is a critical identifiable signal with the same period as the TTL signal so as to ensure that the system can identify the logic level of the instruction signal and occupy the 1-wire bus in real time; and receiving, by the specified slave node, the instruction signal, decoupling the instruction signal to obtain the data request signal, obtaining a reply signal according to the data request signal, coupling the reply signal with the TTL signal to obtain a feedback signal, and sending the feedback signal to the master node.

Signal transmission method, device and equipment based on drilling equipment, and medium

Disclosed is a rotary steering drilling apparatus. The rotary steering drilling apparatus includes a plurality of cylinders that are fixedly connected in series, wherein at least a part of adjacent cylinders are in power connection via a power connection unit; the power connection unit includes a first electrical connecting assembly and a second electrical connecting assembly, the cylinder in power connection is provided with a first electrical connecting assembly at one end and a second electrical connecting assembly at the other end, the adjacent cylinders are in power connection via the first electrical connecting assembly and the second electrical connecting assembly, and the first electrical connecting assembly and the second electrical connecting assembly on the same cylinder are in power connection; the first electrical connecting assembly includes a first electrical connecting ring which is arranged annularly, and the first electrical connecting ring includes a plurality of first conducting regions and first insulating regions which are distributed circumferentially and are spaced apart; and the second electrical connecting assembly includes a second electrical connecting ring which is arranged annularly, and the second electrical connecting ring includes a plurality of second conducting regions and second insulating regions which are spaced apart. The rotary steering drilling apparatus according to the present application can achieve multi-path power connection between adjacent cylinders and has the advantages of being convenient to mount, high in conductivity reliability and the like.

Rotary steering drilling apparatus

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.

Executing mechanism for rotary guide device and rotary guide device

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.

Push type rotary guide drilling system

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.

Rotary guiding device based on radial driving force

Disclosed is a downhole vibration and impact data recording method, comprising: performing analog-to-digital conversion on analog data, outputting digital format data obtained at a sampling rate f, and performing sampling storage processing and analysis storage processing on the same. The sampling storage processing includes outputting the digital format data obtained at a sampling rate fn through multiple samplings; storing the same continuously into a storage module. The analysis storage processing includes: buffering the digital format data obtained at the sampling rate finto a memory; analyzing the same to determine whether an impact event occurs, and if yes, storing the current data in the memory into the storage module, and then jumping back to the buffering step; otherwise, jumping directly back to the buffering step. With the above method, the amount of data storage can be effectively reduced, while the characteristics of the vibration and impact data can be analyzed.

Downhole vibration and impact data recording method

A hybrid rotary guiding device, includes: rotating shaft, the rotating shaft is used to drive the head of a drill tool to rotate, the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, a separation distance exists between the upper shaft portion and the lower shaft portion in the axial direction, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion; the upper shaft portion is installed with at least three first hydraulic mechanisms, and the lower shaft portion is installed with at least three second hydraulic mechanisms, the second hydraulic mechanism is adapted to drive a pushing member against the wall of the well to guide the head of a drill tool, the first hydraulic mechanism and the second hydraulic mechanism are configured so that the first hydraulic mechanism can drive the second hydraulic mechanism to drive the pushing member. The present invention combines the advantages of directional and push-oriented guidance, the influence of formation properties on the build-up slope is largely eliminated, a higher build rate can be provided, and the demand for energy consumption is greatly reduced.

Hybrid rotary guiding device

The invention discloses an anti-rotating device of non-rotating sleeve. The anti-rotating device is connected with the non-rotating sleeve in such way so that the anti-rotating device can transmit circumferential acting force to the non-rotating sleeve, thus the non-rotating sleeve are prevented from rotating, the anti-rotating device comprises an anti-rotating member and a resilient member, the anti-rotating member can move in a generally radial direction of the non-rotating sleeve, and the resilient member acts on the anti-rotating member and provides acting force being substantially radially outward for the anti-rotating member. According to the anti-rotating device of the non-rotating sleeve and a rotary guiding device, on the one hand, bases can be provided for accurate attitude measurement and guiding control, on the other hand, excessively rapid rotation of the two non-rotating sleeve can be prevented only by using one anti-rotating device, and meanwhile the anti-rotating device can further provide guiding driving force based on the minimum structure size.

Growing community of inventors

Beijing, China

Qijun Xie