Pressure control gas lifting controlling system

A technology of control system and control device, which is applied in the direction of production fluid, measurement, wellbore/well components, etc., and can solve the problem that the gas lift process cannot monitor and store gas pressure data and annular liquid level data in real time

Pending Publication Date: 2019-08-13
BEIJING TESTWELL TECH LTD
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  • Description
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Problems solved by technology

[0004] In view of the present situation of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a pressure-controlled gas lift control system, which solves the problem that the current gas lift process cannot monitor and store gas pressure data and annular liquid level data in real time, and Technical Problems of Remotely Controlling the Steady Decline of Annulus Liquid Level

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  • Pressure control gas lifting controlling system

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Embodiment Construction

[0021] The present application will be described in further detail below in conjunction with the accompanying drawings, but it is not intended to limit the present application.

[0022] Such as figure 1 As shown, a pressure-controlled gas lift control system according to the present invention includes a power meter 101, a compressor 102, a gas storage tank 103, a flow control device 104, a liquid level monitoring device 105 and a metering device connected in sequence in the well site 106. The above-mentioned devices are respectively connected with the control device, and all the devices are connected through 485 communication interfaces to facilitate data transmission.

[0023] Further, the flow control device 104 includes a control valve for changing the amount of passing air and a flow meter for monitoring the passing air flow.

[0024] Further, the gas storage tank 103 is equipped with a pressure gauge for monitoring the pressure of the gas storage tank, and the pressure g...

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Abstract

The invention discloses a pressure control gas lifting controlling system. The pressure control gas lifting controlling system includes a compressor and an air storage tank connected with the compressor; the pressure control gas lifting controlling system is characterized in that the pressure control gas lifting controlling system further includes a flow control device allowing an oil jacket annulus liquid level to stably decline and a liquid monitoring device used for monitoring a annulus liquid level; and the compressor, the air storage tank, the flow control device and the liquid monitoringdevice are connected with a controlling device, and the controlling device is used for receiving data and determining to send corresponding instructions. According to the pressure control gas liftingcontrolling system, gas lifting can be controlled remotely to complete stably declining of the oil jacket annulus liquid level, at the same time, operation parameters of each equipment in a gas lifting system are recorded and restored, and the operation conditions of the equipment is monitored in real time.

Description

technical field [0001] The invention relates to the technical field of coalbed methane exploitation, in particular to a pressure-controlled gas lift control system. Background technique [0002] Coal bed methane, commonly known as "gas" and "coal bed methane", is a hydrocarbon gas mainly present in coal seams with methane as the main component. CBM exists in coal seams in three states: free state, adsorbed state and dissolved state. The coalbed methane in the free state exists in the cleats, cracks and pores of the coal seam in a free gas state, and can move freely under the action of the pressure difference. The free gas accounts for 10% to 20% of the coalbed methane. The gas dissolved in coal seam water is called dissolved gas, and the amount is very small, less than 5%. A large amount of coalbed methane is adsorbed on the inner surface of coal in an adsorption state, which is physical adsorption, and this part of coalbed methane accounts for 70% to 95%. [0003] In add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B43/12E21B47/00
CPCE21B43/006E21B43/122E21B47/00
Inventor 郭建平朱云轩申茂和
Owner BEIJING TESTWELL TECH LTD
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