Intelligent control plunger gas lift water drainage and gas recovery system and realizing method thereof

Abstract

The invention discloses an intelligent control plunger gas lift water drainage and gas recovery system and a realizing method thereof. The intelligent control plunger gas lift water drainage and gas recovery system is characterized by being composed of a well mouth blowout preventing device, a ground control device, a data processing station, a well mouth RTU, a plunger, a buffer and a clamping and fixing device. The invention further discloses the realizing method. The realizing method includes the steps that the well mouth blowout preventing device is connected with a well mouth detecting valve and a ground outer conveying pipeline through a flange to buffer plunger upward force, capturing the plunger and externally outputting gas liquid; the ground control device starts or stops gas liquid outer conveying; the optimal plunger gas lift well opening and closing mechanism is achieved through a control system in the data processing station; the well mouth RTU is used for transmitting data and sending out an instruction; the clamping and fixing device is located at the designed position in an oil pipe through steel wire snubbing operation; by means of steel wire snubbing operation, the buffer is put on the clamping and fixing device to offset downward impact of the plunger; the plunger runs in a reciprocating mode in a wellbore to achieve gas liquid lift. The control system in the data processing station determines the optimal plunger gas lift well opening and closing mechanism and sends the control instruction to the well mouth RTU in time, a control box receives the optimal mechanism of the well mouth RTU and adjusts gas lift operation parameters of the plunger in time, and gas well productivity is given into full play to the maximum.

Description

technical field [0001] The invention belongs to the technical field of natural gas field development, and in particular relates to an intelligent control plunger gas lift drainage gas recovery system and a realization method. Background technique [0002] With the continuous development of gas fields, the proportion of low-yield and low-efficiency wells is increasing year by year. How to maximize the productivity of low-yield and low-efficiency wells and maintain stable production of gas wells has become an urgent technical problem to be solved. From the evaluation results of production stimulation effect, it can be seen that the plunger gas lift drainage gas recovery technology is suitable for gas wells with small gas volume (a daily gas production of more than 1,000 m3) and high liquid-gas ratio (less than 5 m3 / 10,000 m3), and the wellbore is slipping The loss is small. Therefore, the plunger gas lift drainage gas recovery technology is an effective measure to improve the...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the deficiencies of the prior art, the present invention provides an intelligent control plunger gas lift drainage gas recovery system and its realization method, which overcomes the shortcomings of conventional plunger gas lift artificial wellhead parameter adjustment

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