A downhole automatic connection device and method for oil pipe internal communication cable used for intelligent layered water injection

    公开(公告)号:US20190376347A1

    公开(公告)日:2019-12-12

    申请号:US16066060

    申请日:2017-09-01

    Abstract: The present invention discloses a downhole automatic connection device for an oil pipe internal communication cable for intelligent layered water injection. The connection device comprises a water injection pipe string in which a cable lowering mechanism is arranged. The cable lowering mechanism comprises a cable, a cable female connector, a motor and load-bearing blades. The cable female connector comprises a female connector shell, a jack insulating plate and an electromagnet. A cable male connector is also fixedly arranged in the water injection pipe string. The cable male connector comprises a male connector shell, a pin insulating plate and an NdFeB magnet. A pin wire welding point is electrically connected with a sensor on an intelligent water distributor. A lead arranged in the pin insulating plate is connected between a pin and the pin wire welding point. The present invention also discloses a connection method.

    SYSTEM AND METHOD FOR PUMPING LUBRICANT IN GAS PIPELINE

    公开(公告)号:US20220010925A1

    公开(公告)日:2022-01-13

    申请号:US17372414

    申请日:2021-07-09

    Abstract: A system for pumping lubricant in a gas transportation pipeline includes a pipeline robot and a control terminal system. The pipeline robot includes a lubricant position detection, module, a lubricant pumping module, an electro-hydraulic control system, a data acquisition and processing system, and a lubricant sucking port. The location at which the lubricant deposits can be detected online, and the lubricant staving in the gas transportation pipeline can be removed in real time. The system is highly automatic and efficient. Resistance against the natural as transportation is reduced effectively, the efficiency of transporting the natural gas is improved, and safety of transporting the natural gas is ensured.

    DOUBLE-LAYER COILED TUBING DOUBLE-GRADIENT DRILLING SYSTEM

    公开(公告)号:US20230085283A1

    公开(公告)日:2023-03-16

    申请号:US17044125

    申请日:2019-12-23

    Abstract: A double-layer coiled tubing double-gradient drilling system, on the basis of conventional drilling equipment, includes a double-layer coiled tubing system, spacer fluid, a downhole lifting pump system, throttling control systems and a data monitoring system. Power fluid enters an annular space of the tubing through an adapter, passes through a downhole lifting pump, enters an inner pipe through a bridge channel, and enters the bottom hole through the drill bit. Return fluid enters an annular channel of the tubing through a recovery hole, then enters the inner pipe through the bridge channel and enters the lifting pump, and then enters a solid control system through the adapter and the control systems in sequence. Gradient control of the bottom hole pressure is realized through monitoring of the spacer fluid and control of the drilling pump unit and throttling control systems. The problem of narrow safe drilling density window is solved.

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