Omni-directional precise-control ignition system for oil tube transmission

Abstract

The invention discloses an omni-directional precise-control ignition system for oil tube transmission. The omni-directional precise-control ignition system comprises an intelligent telemetry device and a gun head main control device internally provided with a detonator; one end of the gun head main control device is connected with an oil tube, the other end of the gun head main control device is connected with a first perforating gun, bullet carriers are placed in the first perforating gun, motors are mounted in the gun head main control devices, motor shafts are connected with directional devices in the gun head main control devices, and the motors are mounted on the bullet carriers; a plurality of between-gun measuring and control devices internally provided with detonators are mounted behind the first perforating gun, the other ends of the between-gun measuring and control devices are connected with second perforating guns, bullet carriers are placed in the second perforating gun, motors are mounted in the between-gun measuring and control devices, motor shafts connected with directional devices in the gun head main control devices, and the motors are mounted on the bullet carriers; one end of the intelligent telemetry device is connected with a PC through a depth-correction pup joint and a ground control instrument, the other end of the intelligent telemetry device is indirectly connected with the gun head main control device in an underwater wireless communication mode, and the gun head main control device is indirectly connected with the between-gun measuring and control devices through wireless transmission. The omni-directional precise-control ignition system is precise in direction measuring and capable of achieving real-time control.

Description

technical field [0001] The invention belongs to the field of oil field exploitation, and mainly relates to an all-round and precise control detonation system for oil pipe transmission. Background technique [0002] At present, most of my country's oil fields are in the middle and late stage of oil well exploitation, and the problems of remaining oil and thin-layer oil that are difficult to extract with conventional techniques are gradually emerging. In order to solve the above problems, a variety of new perforation technologies have emerged in recent years, such as azimuth perforation, ultra-deep penetration perforation, compound perforation, etc. Although these perforation methods can improve the perforation effect to a certain extent, they are still It cannot meet the requirements of fine perforation technology, and there are some problems. In order to solve the above-mentioned problems of perforating technology, someone has developed an integrated fixed-shooting-angle-fi...

AI Technical Summary

Problems solved by technology

However, the orientation accuracy of this technology is within ±10°, and when it is used in wells with a well deviation of less than 20°, an external orientation structure must be used to adjust the gun string orientation by rotating the pipe string at the wellhead, and the labor intensity is relatively high. large, complex

Moreover, the original orientation technology cannot measure and control the orientation of the pipe string in real time after the pipe string is lowered to the predetermined position, and the accuracy is not very high.

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