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Solar energy oil well water injection flow automatic control device

An automatic control device, oil well water injection technology, applied in the direction of using electric device flow control, production fluid, wellbore/well components, etc., can solve the problems of automatic data transmission, low measurement accuracy, and high cost of oil field water injection system

Active Publication Date: 2012-06-27
ZHEJIANG JINLONG AUTOMATIC CONTROL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In view of the above defects, the technical problem to be solved by the present invention is to solve the problems of high cost, low measurement accuracy and automatic data transmission of the oil field water injection system.

Method used

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  • Solar energy oil well water injection flow automatic control device
  • Solar energy oil well water injection flow automatic control device
  • Solar energy oil well water injection flow automatic control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0022] Such as figure 2 As shown, the present invention includes a regulating valve 4, a flow control instrument 3 and a pressure gauge 2 connected in series in sequence, and also includes a solar cell device 7, and the output ends of the solar cell device 7 are respectively connected with the flow control instrument 3 and the regulating valve 4 and provide power to them respectively.

[0023] In this embodiment, the present invention is directly connected in series in the main water injection line. It can be welded to form a non-detachable type, or it can be made into a detachable type. For the detachable type, a section of the water injection main line is removed during water injection. When the pipeline is reconnected to include the small-caliber water injection regulating pipeline of the present invention; when flushing, the present invention is removed and restored to the original large-diameter pipeline.

Embodiment approach 2

[0025] Such as image 3 As shown, on the basis of Embodiment 1, the present invention adds an independent water injection pipeline and two shut-off valves, the first shut-off valve 1 and the second shut-off valve 5 arranged in the water injection pipeline, and the regulating valve 4, The flow controller 3 and the pressure gauge 2 are sequentially connected in series in the water injection pipeline, and the first and second cut-off valves 1 and 5 are respectively arranged between the regulating valve 4 and the water injection main line and between the pressure gauge 2 and the water injection main line between.

[0026] The present invention is also connected to the water injection main line. During water injection, the manual valve 9 on the water injection main line is disconnected, and the shut-off valves 1 and 5 are opened, so that the water injection liquid is injected into the oil well by the present invention. When maintaining the instrument on the water injection pipelin...

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Abstract

The invention discloses a solar water injection flow automatic control device which comprises a flow controller, an electronic adjusting valve, a pressure gauge and a solar power supply device which are connected in series in sequence, further comprises an independent water injection pipeline and a trip valve which is arranged in the water injection pipeline, and also comprises a wireless transmission device which is used for receiving flow signals and pressure signals, and transmitting control signals of the flow controller and supporting GPRS. During water injection, injected liquid is injected into an oil well through the device, because the water injection flow is smaller, the pipeline, the flow controller, the adjusting valve and other components can use products with small diameters. During well flushing, the trip valve of the water injection pipeline is closed, and a trip valve of a water injection main line is opened to flush the oil well in large flow. The whole system uses asolar cell device to supply electricity without constructing a power supply pipeline, and is controlled remotely, thereby greatly saving cost.

Description

technical field [0001] The invention relates to an oilfield wellhead water injection device, in particular to an oilfield wellhead water injection flow automatic control system. Background technique [0002] Oilfield water injection is a measure to inject water into the oil layer by using the water injection well to replenish and maintain the pressure of the oil layer. After the oil field is put into development, with the increase of production time, the energy of the oil layer itself will be continuously consumed, resulting in a continuous drop in the pressure of the oil layer, a significant reduction in the output of the oil well, and even a shutdown of injection and production, resulting in a large amount of recoverable crude oil remaining underground. In order to make up for the underground deficit caused by the extraction of crude oil, maintain or increase the pressure of the reservoir, achieve high and stable oil production, and obtain a high recovery rate, it is neces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20G05D7/06
Inventor 余金海汪南杰史佳
Owner ZHEJIANG JINLONG AUTOMATIC CONTROL EQUIP