Multistage ignition perforating initiation system based on digital electronic detonator using single core cable

Abstract

The invention provides a multistage ignition perforating initiation system based on a digital electronic detonator using a single core cable; the multistage ignition perforating initiation system comprises a multistage perforating unit composed of a perforating gun and a digital electronic detonator, the multistage perforating unit is connected with a well logging system through a ground control detonator after connected with cable according to the coding order; the digital electronic detonator of each perforating unit comprises a base detonator packed in a tube shell and an ignition component connected with the electronic control module, three pins of the digital electronic detonator are respectively connected with the output of the front stage digital electronic detonator, the input and the well wall of the rear stage digital electronic detonator; the input of the first stage digital electronic detonator is connected with the ground control detonator through a single core cable. The integrated circuit is used for replacing the conventional separated element for raising the reliability, the bidirection communication of the single core cable can be achieved, the full function detection is realized for the state of the underground detonator and the rich combination initiation and high precision delay detonating mode is offered.

Description

technical field [0001] The invention relates to an underground perforation equipment, in particular to a multi-stage ignition perforation initiation system based on a digital electronic detonator using a single-core cable. Background technique [0002] In oil and shale gas exploitation operations, downhole perforation operation is an important process. It is to lower the perforating gun into the target formation downhole and detonate it with the detonating device. The pipe and the cement layer pass through the tunnel, so that the formation communicates with the drilling well, so that the oil and gas in the formation can flow into the well smoothly. [0003] Multi-stage perforation technology refers to the perforation technology that penetrates multiple oil and gas layers at one time in the case of the next pipe string, which can reduce the number of perforations and save operating time and cost. Conventional multi-stage perforation operation methods include traditional mech...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the above-mentioned problems existing in the existing multi-stage perforation in the petroleum industry, to provide a digital electronic detonator for multi-stage ignition perforation and the multi-stage ignition perforation detonation system, which effectively overcomes the traditional Many disadvantages of the mechanical transmission perforation mode, and the electronic code-free mode built by the separation device has the disadvantages of low reliability, single function, and poor safety.

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