Throwing type fracturing equipment

Abstract

The invention discloses a throwing compression fracture machine that is suited to oil or gas throwing compression fracture effect increasing technology. It is made up of piezo ignition machine and high energy gas generator. The feature is that the piezo ignition machine could cut off the pressure bearing bolt by function of the liquid column, and make the plunger move to drive the firing pin to knock percussion cap. The percussion cap would fire the starting cartridge, powder and powder column. The fire output by the piezo ignition machine would fire the plural powder columns in high energy gas generator and compressing the object storing layers to fracture. The invention is easy to operate and sharply decreases the consumption of manpower and material.

Description

technical field [0001] The invention belongs to the technical field of oil and gas well high-energy gas production and efficiency enhancement operations, and in particular relates to a drop-in fracturing device suitable for the oil and gas well fracturing efficiency enhancement process. Background technique [0002] During the continuous exploitation of old oil wells, there will be precipitation of petroleum coal tar colloids and asphaltene, precipitation of paraffin and salt, emulsion, clay and fresh water reaction expansion in the oil rock formation; in addition, in the process of drilling and oil testing, oil The rock formation will also be polluted by mud; various impurities will also invade into the oil rock formation during workover. The combination of the above conditions leads to the deterioration of the permeability near the wellbore and the decrease of oil productivity. Therefore, different fracturing stimulation measures can be adopted according to the downhole g...

AI Technical Summary

Problems solved by technology

The main defects of the cable conveying fracturing process are: (1) each construction operation needs to be equipped with equipment such as cable cars and magnetic locators, and the construction site must also control electricity and high-frequency communication equipment; (2) During the process, the cable will be knotted when encountering resistance, resulting in shutdown or rework; (3) the elongation of the cable is uncertain with time and temperature changes, which makes the action position of the electric igniter deviate from the target layer; (4) the process is affected by Time and climatic conditions are greatly restricted, and construction cannot be carried out at night and under severe climatic conditions such as strong wind, sand, rain and snow; (5) During the fracturing operation, high-temperature and high-pressure gas will cause damage to the cable, which will cost a lot human and material resources

The main defects of this fracturing technique are as follows: (1) oil pipes must be put into the well one by one each time the fracturing operation is carried out, and then taken out from the well one by one at the end, not only the process is complicated, but the operation cycle It lasts for several days, and this process is not suitable for low-yield wells and old oil wells that already have tubing downhole; (2) During the process of going down the well, the pressure-activated igniter needs to add water to it section by section from the wellhead. The impact of water on the igniter may change the ignition value of the igniter, resulting in the accident that the igniter ignites before reaching the target reservoir; (3) During construction operations, the speed of lifting and lowering the tubing or falling objects will affect the construction quality and construction quality. safety in the process

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