Linear motor vibration well cementation device based on RFID control and well cementation method

Abstract

The invention discloses a linear motor vibration well cementation device based on RFID control and a well cementation method, and belongs to the technical field of oil and gas well engineering. The device comprises an upper joint, a signal generating ball, a sealing ring, a control assembly, a high-temperature-resistant battery, a battery mounting sleeve, an outer sleeve, a vibration generating assembly and a lower joint. The RFID-controlled linear motor vibration well cementation device is put into a preset position in a horizontal well, a signal generation ball is put into a casing string at a ground wellhead, a control assembly is activated, the control assembly controls a high-temperature linear motor to work, a vibration generation assembly works to generate vibration, an acceleration sensor detects the acceleration generated by vibration, and the acceleration sensor detects the acceleration generated by vibration. The acceleration circuit board tests the vibration amplitude of the vibration well cementation device, through algorithm analysis, the frequency sweep circuit board finds the optimal vibration frequency in the frequency sweep range, and the motor control circuit board controls the high-temperature-resistant linear motor to continuously work at the optimal vibration frequency point.

Description

technical field [0001] The invention relates to the technical field of oil and gas well engineering, in particular to a linear motor vibration cementing device and a cementing method based on RFID control. Background technique [0002] In the process of oil extraction, cement slurry needs to be injected after the cementing operation is put into the casing. The annulus bonding strength and sealing quality of the cement slurry directly affect the cementing quality. In order to ensure the cementing quality and prevent oil, gas and For water mixed channeling, vibration cementing device should be used during the cementing operation to improve the density and uniformity of cement slurry and ensure the bonding strength of the interface. At present, the commonly used vibration cementing devices at home and abroad include audio frequency vibration cementing, annular pulse vibration cementing, mechanical vibration cementing and hydraulic pulse vibration cementing, etc. Among them, the...

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Problems solved by technology

At present, the commonly used vibration cementing devices at home and abroad include audio frequency vibration cementing, annular pulse vibration cementing, mechanical vibration cementing and hydraulic pulse vibration cementing, etc. Among them, the hydraulic pulse vibration cementing device is used in oil production The most widely used vibration cementing device, but the vibration cementing device can only produce axial vibration, and the amplitude is uncontrollable. The other vibration cementing tools also have many defects in the use process. With the development of vibration cementing technology, for vibration The requirements for parameter accuracy and vibration wave effect are constantly improving, and the above-mentioned vibration devices have been difficult to meet the current vibration cementing requirements

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