Bridge stuffing hard connecting impact type ignitor

Abstract

The invention discloses an impingement flame ignitor of the bridged-plug hard wired which is used for the transmission type bridged-plug bed ignition process of the vitta. The ignitor is made up of the mechanical impacting firing module which includes the caber and the striker module, and the fire production module. The input end is connected with the vitta and the output is connected with the bed cuff tools. The invention and the bed cuff tools are put into the object layer and fling the caber into the well from the well mouth along the vitta, so the caber impacts the striker to ignite and ignite the powder flask in the bed cuff tool to drive the bridged-plug to seal. It has the advantage of the cable bridged-plug bed cuff process and against the disadvantage of the block, the knot and the twine, so it can decrease the construction cost.

Description

technical field [0001] The invention belongs to the field of oil and natural gas exploitation operations, and mainly relates to an isolation device for oil wells and gas wells, in particular to an ignition device for an oil pipe transmission type bridge plug sealing device. technical background [0002] In the downhole operation of oil and gas wells, due to engineering needs, sometimes a well section is temporarily or permanently closed, so that the oil well is divided into two independent parts from the isolation section, and the well section below the isolation section no longer affects the well above the isolation section. Section operations; while the well sections above the isolation section can still carry out corresponding downhole operations, so that oil and gas wells can be reproduced. The most traditional isolation operation is to put a cement plug in the isolation section. Since the 1970s, there have been packers that use gunpowder combu...

AI Technical Summary

Problems solved by technology

[0003] Although the cable bridge plug seat sealing process has the advantages of simple process and short construction period, the success rate and reliability of its construction are not ideal

The main reasons are: 1. The proportion of downhole liquid is large, and the cable will be reworked due to resistance during the lowering of the bridge plug; 2. The bridge plug is lowered by the cable to several kilometers of oil and gas wells, and the cable cannot be controlled during the lowering process. The bridge plug and the seat seal tool are in the middle, and the bridge plug and the casing are constantly collided and rubbed, which damages the bridge plug and affects the quality of the seat seal; 3. The diameter of the bridge plug is relatively large, and the gap between the plug and the casing is relatively small. It often collides and rubs with the bushing, and in severe cases, it will be stuck. It is necessary to lift the bridge plug to cause rework. At the same time, there is a risk that the cable will be broken when lifting the bridge plug. Once the cable is broken, it will cause a major accident; 4. Bridge When the plug is in the downhole operation, the soft cable is straightened by the weight of the bridge plug and the sealing tool, so the lowering speed of the bridge plug and problems such as the plug being blocked and stuck will automatically cause the cable to be knotted, and the cable is seriously knotted Sometimes it is necessary to cut the cable, and the follow-up work, whether it is taking the cable or fishing the bridge plug, is a big accident that is difficult to handle.

5. In oil and gas wells with complex formation structures or when the casing is deformed to a certain extent, it is impossible to implement cable bridge plug sealing construction operations

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