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Electro-hydraulic anchoring device

An anchoring device, electro-hydraulic technology, applied in wellbore/well components, earthwork drilling, etc., to achieve the effect of stable and reliable anchoring process and large anchoring force

Active Publication Date: 2019-05-21
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the deficiency that the existing hydraulic support arms need continuous power from the hydraulic system to work

Method used

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  • Electro-hydraulic anchoring device
  • Electro-hydraulic anchoring device
  • Electro-hydraulic anchoring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, an electro-hydraulic anchoring device includes a power unit 1 and a mechanical unit 2. The power unit 1 includes a motor 10, a hydraulic pump 13 and an electromagnetic reversing valve 17. The output shaft of the motor 10 is connected to the The input shafts of the hydraulic pump 13 are connected, and different shafts are allowed; the hydraulic pump 13 is connected to the electromagnetic reversing valve 17 through the hydraulic pipe 15, and the overflow valve 16 is installed between the hydraulic pump 13 and the electromagnetic reversing valve 17 The overflow valve 16 is a constant pressure protection element of the hydraulic system, ensuring that the system oil pressure can be stabilized at a set value. The electromagnetic reversing valve 17 has three functions of "X", "II" and "O". The electromagnetic reversing valve 17 can realize three different oil pressure output states.

[0022] The mechanical unit ...

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Abstract

The invention relates to the technical field of well logging and well drilling and completion in the petroleum and gas industry, in particular to an electro-hydraulic anchoring device. The device comprises a power unit and a mechanical unit, the power unit comprises a motor, a hydraulic pump and an electromagnetic directional valve, an output shaft of the motor is connected with an input shaft ofthe hydraulic pump through a coupler, the hydraulic pump is connected with the electromagnetic directional valve through a hydraulic pipe, and an overflow valve is installed between the hydraulic pumpand the electromagnetic directional valve. A hydraulic system does not need to provide power continuously, the anchoring force is large, the anchoring process is stable and reliable, the hydraulic system can stop working after an instrument and a well wall are anchored, and due to the self-locking function, the instrument and the well wall cannot be unsealed, and the matching use requirements ofhigh-power and complex-function downhole instruments are met.

Description

Technical field: [0001] The invention relates to the technical field of well logging and drilling and completion in the petroleum and natural gas industry, in particular to an electro-hydraulic anchoring device. Background technique: [0002] In the process of oil and gas exploration and development, cables are often used to lower instruments into the well for logging, drilling or sampling operations. However, when the hydraulic support arm is working, the supporting hydraulic system needs to run continuously to keep the instrument and the wellbore fixed. Therefore, during the entire downhole operation, there must be a circuit that continuously supplies power to the hydraulic system to ensure its operation. If the downhole instrument requires multiple motors to work at the same time or requires a large operating current, it is difficult to achieve this requirement due to the limitation of the number of cable cores and the limitation of current transmission capacity. Invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/01E21B23/10
Inventor 刘平全施连海高玮李磊兵张秋阳张帆黄辉建张昕冉董清坤
Owner BC P INC CHINA NAT PETROLEUM CORP
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