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Mechanical punching tool and operation method

A technology of punching and tools, which is applied in the field of oil and gas field development, can solve the problems of little effect and high cost, and achieve the effect of low cost, high operating efficiency and wide application fields

Active Publication Date: 2020-12-15
CNOOC ENERGY TECH & SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the conventional re-completion method has little effect and high cost to solve the problem of old well stimulation. How to safely and efficiently improve the connectivity between the wellbore and the formation is still a difficult point in the field workover operation

Method used

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  • Mechanical punching tool and operation method

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Experimental program
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Effect test

Embodiment

[0026] see figure 1 . A mechanical punching tool, the overall structure is as follows figure 1 shown. After the return spring 2 is assembled and matched with the positioning pin 3, it is installed inside the upper joint 1, the lower end of the return spring 1 cooperates with the push seat 4, and the push seat 4 is installed inside the upper joint 1, and the punch arm 7 is connected to the tool through the rotating pin 8. The main body 6 is assembled, the punch 9 is connected with the punch arm 7, the punch arm 7 and the punch 9 cooperate with the thrust piston 5, and the hydraulic cylinder liner 10 is installed at the lowermost end of the tool body 6. The hydraulic cylinder liner 10 and the positioning pin 3 are respectively designed with hydraulic passages, and the punch arm 7 drives the punch 9 to rotate along the rotating pin 8 .

[0027] The working principle of the present invention is: please refer to figure 1 . The upper and lower button types of the tool of the pr...

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PUM

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Abstract

The invention discloses a mechanical punching tool. The mechanical punching tool comprises an upper connector, a positioning needle, a reset spring, a pushing and pressing seat, a thrust piston, a tool body, a punch arm, a punch and a hydraulic cylinder sleeve. The mechanical punching tool adopts a mechanical hole forming method, the punch extends outwards, two holes can be formed through one-timeoperation, and multiple holes can be formed through a single pipe column. Compared with the prior art, the mechanical punching tool is high in field operation efficiency, low in cost, wide in application field and capable of meeting the requirements for screening, casing windowing and stratum powerful plug removal and yield increase, the connectivity of an oil well can be improved, a foundation is provided for subsequent chemical fracturing and oil well transformation, and the mechanical punching tool has important significance in improving the production efficiency of the oil well.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development, and in particular relates to a mechanical punching tool and an operation method. Background technique [0002] As the development of offshore oil and gas fields gradually enters the middle and later stages, the connectivity between the oil and gas wellbore and the reservoir gradually decreases with production. It is getting worse and worse, and the number of low-yield and low-efficiency wells and shut-down wells is increasing, reducing the production of oil wells. At present, the conventional re-completion method has little effect and high cost to solve the problem of old well stimulation. How to safely and efficiently improve the connectivity between the wellbore and the formation is still a difficult point in the field workover operation. Aiming at the on-site technical problems, a new type of mechanical punching tool and operation method suitable for downhole is research...

Claims

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Application Information

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IPC IPC(8): B21D28/34B21D28/28
CPCB21D28/34B21D28/285
Inventor 邢洪宪王利军鞠少栋王世强王新涛刘传刚
Owner CNOOC ENERGY TECH & SERVICES