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Method for accurately metering oil input of oil field united station

A metering method and technology of oil intake, applied in directions such as pressure measurement and display of liquid level indicators, can solve the problems of large measurement errors and high labor intensity, and achieve the effect of high precision and automatic inventory

Inactive Publication Date: 2010-10-06
张殿华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-precision measurement method for the oil intake of an oil field combined station, which solves the problems of high labor intensity and large measurement errors in the existing methods in the prior art

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  • Method for accurately metering oil input of oil field united station
  • Method for accurately metering oil input of oil field united station
  • Method for accurately metering oil input of oil field united station

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Embodiment Construction

[0025] The high-precision measurement method of the oil inlet of the oilfield joint station is to use the pressure difference method, and use the pressure guide tube installed outside or inside the tank to keep the same temperature as the settling tank; the top of the pressure guide tube is at the same height as the liquid level in the tank, and the pressure guide tube The bottom is connected to the bottom of the tank and installed with a differential pressure sensor (P Tn ), taking all the clean oil and all the water in the whole oil tank as two wholes, assuming that the liquid level is constant, excluding the total amount of oil and water in the settling tank, only measuring the change of clean oil in the settling tank, using the first day of measurement The differential pressure of the differential pressure sensor and the liquid level of the settling tank, using the formula:

[0026] P 1 =ΔP T1 +H 油 · γ 油 +H 水 · γ 水

[0027] P 1 : pressure in the pilot string; ΔP T...

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Abstract

The invention discloses a method for accurately metering oil input of an oil field united station, which is used for the metering of crude oil of the oil field united station. In the method, a differential pressure method is adopted, the temperature of a pressure pipe is kept equal to that of a sedimentation tank by arranging the pressure pipe inside and outside the tank, and all absolute oil and all water in an entire oil tank are considered as two wholes; a liquid level is supposed to be constant, only the variation of the absolute oil in the sedimentation tank is measured by using a dehydrator differential pressure metering device without measurement of the total amount of oil and water in the sedimentation tank. The method consists of a sedimentation tank differential pressure metering method, a buffer tank differential pressure metering method and a dehydrator differential pressure metering method or consists of a sedimentation tank differential pressure method, a buffer tank differential pressure method and a dehydrator differential pressure method and is implemented through a sedimentation tank differential pressure method device, a buffer tank differential pressure method device and a dehydrator differential pressure method device. The device consists of a differential pressure sensor, a pressure pipe, a liquid level meter, a computer, a multidirectional pressure valve, a multidirectional pressure valve seat and a multidirectional pressure valve faucet, wherein the differential pressure sensor is connected with the pressure pipe through a screw thread; the multidirectional pressure valve is connected with the pressure pipe through a screw thread; and the multidirectional pressure valve seat is in tolerance fit with the multidirectional pressure valve faucet. The method solves the problems of high labor intensity and big metering error existing in a conventional method and can be widely applied to crude oil metering operation of the oil field united station.

Description

Technical field: [0001] The invention relates to a high-precision measuring method for the oil inlet quantity of an oil field combined station used for measuring crude oil in an oil field combined station. Background technique: [0002] At present, crude oil measurement in oilfields mainly uses the process of calculating the daily crude oil production volume of oilfields based on the change of net oil volume in oil storage tanks of oilfield joint stations, which is called inventory. The accuracy of inventory directly affects the management and decision-making of oilfield production. The panel warehouse of the oilfield joint station has always used manual measurement, that is, the purified oil tank is manually measured, and the water content analysis is carried out in the laboratory. The settlement tank uses manual sampling to determine the oil-water boundary. The strength is high, and the measurement error is also large. The main reason is that the measurement accuracy of th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/14
Inventor 张殿华
Owner 张殿华
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