Hydraulic accumulating device of telescoping ram
A technology of hydraulic energy storage and pusher, which is applied in the direction of measurement, wellbore/well components, earthwork drilling and production, etc., to achieve the effects of reducing the possibility of jamming, large reset force, and reducing the length of the instrument
Active Publication Date: 2010-03-10
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
To store enough hydraulic energy for this kind of accumulator, a very long coil spring must be designed, resulting in a longer overall length of the accumulator. If it is connected in series to the instrument, the length of the instrument will increase a lot. Card accidents are more likely to occur
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[0018] Such as figure 1 As shown, the present invention includes a push arm 2 and a push arm hydraulic circuit 5, and at least two accumulators 1 are arranged in parallel between the push arm 2 and the push arm hydraulic circuit 5, and each of the accumulators 1 A hydraulic reset element 3 is provided separately, and a control device is also provided between the accumulator 1 and the push arm 2 and the push arm hydraulic circuit 5 to conduct or disconnect the accumulator 1 and the push arm 2 and the push arm hydraulic circuit 5. Open accumulator control loop 10.
[0019] The present invention adopts the accumulator 1, and controls the communication between the accumulator 1 and the push arm 2 and the push arm hydraulic circuit 5 through the accumulator control circuit 10, so that the energy accumulator 1 can be stored when the instrument is powered. Yes, the function of providing energy for the push arm 2 when the power is off can effectively prevent the instrument from being...
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The invention provides a hydraulic accumulating device of a telescoping ram, comprising a backup arm and a backup arm hydraulic circuit, wherein at least two accumulators are installed in a parallel connection between the backup arm and the backup arm hydraulic circuit and are all independently provided with hydraulic reset components; and the accumulator control circuit which controls the conduction and the disconnection between the accumulators and the backup arm as well as the backup arm hydraulic circuit is installed between the accumulators and the backup arm as well as the backup arm hydraulic circuit. The invention adopts the accumulators, utilizes the accumulators to control the connection between the accumulators and the backup arm as well as the backup arm hydraulic circuit, andrealizes the function that the accumulators store energy when an instrument is energized and supply energy to the backup arm when the energy is off, thereby effectively avoiding the problem of the instrument withdrawing sticking caused by the condition that the backup arm can't be withdrawn without power when the instrument is failed.
Description
technical field [0001] The invention relates to a hydraulic energy storage device for a thruster. Background technique [0002] At present, most of the downhole instruments used in oil exploration use instruments that are close to the well wall, and such instruments generally need to be retracted into the instrument body during the process of lifting the instrument to prevent the instrument from being lifted. During the lifting process, accidents of hanging and jamming with the well wall and the inner wall of the casing occurred. [0003] Most of the traditional safety devices belong to the "spring automatic return type", while the pure spring mechanical return has limited uses and large volume. Also have to use common accumulator, the accumulator that uses at present is " long tube type " helical spring accumulator. To store enough hydraulic energy for this kind of accumulator, a very long coil spring must be designed, resulting in a longer overall length of the accumulat...
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IPC IPC(8): E21B49/00E21B47/00
Inventor 谭显忠唐玉宏李索贵周杨
Owner CHINA NAT OFFSHORE OIL CORP