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Crude-oil automatic continuous measuring device

A metering device and automatic technology, applied in surveying, wellbore/well components, earthwork drilling, etc., can solve the problems of single metering device, low metering accuracy, and small adaptability range, and achieve high metering accuracy, large metering range, good reliability

Inactive Publication Date: 2010-07-28
付伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an automatic continuous metering device for crude oil, which solves the problems of single metering device, small adaptable range and low metering accuracy in the prior art

Method used

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  • Crude-oil automatic continuous measuring device
  • Crude-oil automatic continuous measuring device

Examples

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Effect test

example 1

[0020] Example 1. Automatic metering of oil wells with high gas-oil ratio and large associated gas volume

[0021] If the metering station where the metering device is applied has a high gas-oil ratio and a large gas production, a work cylinder in the separator can be used to measure oil and gas automatically. The metering principle is the same as that of glass tube oil metering. For example, the left working cylinder can be used for measurement. During the measurement, the intelligent control system controls the imported electric three-way valve 9 to be in a conducting state to the left working cylinder, and then controls the outlet electric three-way valve 2 to be in a conducting state to the left working cylinder, and the right working The cylinder is not connected to the external inlet and outlet pipelines, the gas is gradually separated from the crude oil, and the crude oil in the left working cylinder is pressed away from the outlet pipeline. When the liquid level in the ...

example 2

[0022] Example 2. Automatic metering of oil wells with low gas-oil ratio, small amount of associated gas or no associated gas

[0023] For oil wells with low gas-oil ratio, small amount of associated gas or no associated gas, the two working cylinders in the separator need to work at the same time. Since the separator cannot realize the normal pressure liquid level emptying, the metering device can be filled with nitrogen in advance, which is used for the pressure liquid level during the metering operation.

[0024] The oil well is poured into the metering device, and the intelligent control system 18 issues commands to the import and export three-way valves according to the detected liquid levels of the two working barrels. When the inlet three-way valve 9 is connected to the left working cylinder under the control of the control system, and the outlet three-way valve 2 is connected to the right working cylinder, the liquid level in the left working cylinder starts to rise, n...

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Abstract

The invention discloses a crude-oil automatic continuous measuring device, comprising a separator, an electric T-shaped valve, a remote level gauge, a safety valve, a pressure sensor, a temperature sensor, a control circuit and an intelligent control cabinet. The invention is characterized in that the separator body is shaped like a vertical cylinder, the upper and lower ends of the separator body are welded with seal heads, and a separating plate is welded vertically from the middle part of the lower seal head to the lower end of the lower seal head to divide the separator body symmetrically to form two separating cavities; the situation of fluid collecting and fluid discharging is detected by the remote level gauge, the pressure sensor, and the temperature sensor, through controlling by the control circuit in the control cabinet, through filling nitrogen into the separator body, the continuous or discontinuous measuring for crude oil in oil well with high / low oil gas ratio is realized.

Description

1. Technical field [0001] The invention relates to an automatic continuous metering device for crude oil, which solves the problem in the prior art that the application range is small and the metering accuracy is low. 2. Background technology [0002] Oil well metering is an important work in oilfield development and production management. Accurate and timely understanding of oil well production has important guiding significance for mastering reservoir conditions, adjusting development plans, controlling oilfield decline, and improving ultimate recovery. At present, the oil well metering technologies used in various oilfields across the country include separator glass tube metering, tipping bucket weighing metering, multiphase flow metering, power diagram metering, vehicle-mounted wellhead metering, etc., because each metering method has a certain scope of application , when it exceeds its scope of application, large measurement errors will inevitably occur. It is difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00
Inventor 张绪霞侯秀梅魏知连陈明王云川刘荣志李森林许卫国
Owner 付伟
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