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Plunger device for gas well online measurement and plunger type drainage gas recovery system

A technology of liquid drainage and gas production and plunger, which is applied in the directions of measurement, fluid exploitation, earthwork drilling and production, etc. It can solve the problems of accelerating the plunger's descending speed and gas well must stop production, etc., and achieves good safety, high operating efficiency and simple structure Effect

Inactive Publication Date: 2012-12-05
PETROCHINA CO LTD
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Problems solved by technology

This technology has been used for decades, but its disadvantage is that the gas well must be shut down during well logging. Since the plunger gas lift itself is intermittent production, the gas well does not produce gas during the plunger drop period. Decline speed and other measures to increase single well production

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  • Plunger device for gas well online measurement and plunger type drainage gas recovery system
  • Plunger device for gas well online measurement and plunger type drainage gas recovery system
  • Plunger device for gas well online measurement and plunger type drainage gas recovery system

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] In order to solve the shortcomings of the traditional wireline logging technology, such as low operating efficiency, need to shut down the well and stop production, and poor safety, a new type of gas lift plunger tool combination embedded with measuring instruments and communication modules has been developed. This technology can perform on-line measurement, logging, data transmission and gas well production at the same time, canceling the wireline loggi...

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Abstract

The invention provides a plunger device for gas well online measurement and a plunger type drainage gas recovery system. The plunger device comprises an instrument working barrel assembly, a plunger central barrel, a plunger sliding sleeve and a damper assembly, the instrument working barrel assembly is positioned at the top of the plunger device, the plunger central barrel and the plunger sliding sleeve form a main body of the plunger device, the damper assembly is positioned at the bottom of the plunger device, and a measuring instrument and a communication module are arranged in the instrument working barrel assembly. When used for gas well production, the plunger device goes back and forth between a well mouth and a well bottom and uninterruptedly transmits data measured by the underground measuring instrument to the ground for analysis in a wireless data transmission manner by the aid of the communication module at the well mouth. The plunger type drainage gas recovery system comprises a blowout prevention pipe assembly and a plunger, the measuring instrument and the communication module are arranged in the plunger, and the plunger uninterruptedly transmits the data measured by the underground measuring instrument to a communication module internally arranged in the blowout prevention pipe assembly by the aid of the communication module at the well mouth. The plunger device for gas well online measurement and the plunger type drainage gas recovery system are capable of meeting online measurement requirements of natural plunger gas-lift wells.

Description

technical field [0001] The invention relates to the technical field of gas recovery in oil and gas fields, in particular to a plunger device for on-line measurement of gas wells and a plunger liquid drainage gas recovery system. Background technique [0002] With the increasing demand for clean energy in the national economy, the proportion of natural gas consumption is increasing year by year, and the development and utilization of natural gas resources are also being paid more and more attention. In recent years, the large-scale commercial development of unconventional natural gas resources has changed the pattern of the world natural gas market. With the improvement of gas field recovery, many gas wells have entered the stage of low pressure and low single well production. The flow rate of the gas well is too low to reach the critical liquid-carrying flow rate of the gas well, and the liquid-carrying capacity is poor. Liquid accumulation gradually occurs at the bottom of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/06E21B47/07E21B47/017E21B43/00E21B33/06E21B47/12
Inventor 沈泽俊童征裴晓含黄红梅薛建军钱杰王新忠高扬
Owner PETROCHINA CO LTD
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