High pressure well sealing oil-water well pressure punching device and punching plugging device

Abstract

A high pressure well sealing oil-water well pressure punching device and a punching plugging device are disclosed. The high pressure sealing cabin of the punching device is located on the front portion of a shell. The high pressure sealing cabin is connected to the shell through a connection clamp. A connecting ring sleeves the shell. A fixing plate is located on the rear portion of the shell. A connection screw rod is connected between the connecting ring and the fixing plate. The connection screw rod and the fixing plate are locked through a compression nut, a retaining washer and a positioning pin hole. The high pressure sealing cabin has a pressure release port and a pressure gauge filament head. The punching device can carry out safe and controllable punching operation. When a drill bit drills the outer wall of the oil-string casing of a high pressure oil-water well, a high pressure liquid in the well is transmitted to clean water in a high pressure control cabin, and through theprinciple of hydraulic transmission pressure, a condition is reflected to a pressure gauge and the purpose of recording pressure in the well is realized. And simultaneously, when a drilling tool is withdrawn, the clear water does not pollute an environment. The punching plugging device replaces a control valve, a problem that pressure leakage in the well can not be controlled can be effectively prevented, and the safety of well sealing in an oil field is ensured.

Description

technical field [0001] The invention relates to a device for opening holes under pressure for oil and water wells under high pressure well sealing and a hole sealing device. Background technique [0002] 1. At present, there are a large number of shut-down wells in the oilfield due to geological engineering reasons. [0003] 2. If the internal pressure cannot be detected in the original sealing technology, and the wellhead cap cannot be opened, it will cause production problems for pressure recording, near-fishing oil production increase and redevelopment, and affect the normal production of the oil field. [0004] 3. There are great potential safety hazards and environmental pollution hazards. [0005] 4. Since the pressurized hole opening device needs to install a control valve at the hole opening position, the cost of opening the hole is increased. Contents of the invention [0006] The purpose of the present invention is to solve the problem of opening holes under pr...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of opening holes under pressure and the plugging of the holes when the high-pressure liquid exists in the well of the sealed well oil and water well, and provide a kind of pressure tapping device and the hole plugging of the high pressure well sealing oil and water well device

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