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Method for measuring three-phase flow rate of producing wellhead oil transportation pipeline and daily fluid production rate of single well

A technology for oil pipelines and oil production wells, which is applied in the field of three-phase flow flow measurement of oil production wellhead oil pipelines and single well daily liquid production. It solves the problems of large volume and other problems, and achieves the effect of solving practical worldwide problems, reasonable and effective distribution of oil pipelines, and convenient testing

Active Publication Date: 2014-03-05
哈尔滨斯特凯峰电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The measurement of the three-phase flow rate at the wellhead of the oil production well and the daily liquid production of a single well is a worldwide problem. The traditional three-phase flowmeter is bulky, complex in structure, radioactive, expensive, and the measurement process takes a long time to operate. Practical, difficult to maintain

Method used

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  • Method for measuring three-phase flow rate of producing wellhead oil transportation pipeline and daily fluid production rate of single well
  • Method for measuring three-phase flow rate of producing wellhead oil transportation pipeline and daily fluid production rate of single well
  • Method for measuring three-phase flow rate of producing wellhead oil transportation pipeline and daily fluid production rate of single well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The three-phase flow rate of the wellhead oil pipeline of the oil production well and the daily liquid production of a single well are measured. Before the working conditions of the oil production well in operation are changed, the tensile force, torque, active power, and liquid surface value of the liquid level sensor are measured. The oil production well in normal operation According to the following methods to change the operating conditions, (1) shut down the oil production well, (2) frequency conversion of the oil production well, (3) adjust the parameters of the oil production well, (4) inject the production liquid in the oil production well tubing into the ring sleeve (tubing and casing between); after changing the working condition, the oil production well continues to operate under the working condition for a period of time t, and then returns to the working condition before the change; measure the tension, torque, active power, and liquid level sensor after the ...

Embodiment 2

[0030] The three-phase flow rate of the wellhead oil pipeline of the oil production well and the daily liquid production of a single well are measured. The oil production well in normal operation measures the tension, torque, active power, and liquid level value of the annulus of the liquid level sensor, and changes the operating condition according to the following method. After changing the working condition, the oil production well continues to operate under the working condition for a period of time t, and then returns to the working condition before the change.

[0031] (1) Shutdown of production well

[0032] The oil production wells in normal operation are stopped, and the operating conditions of the oil production wells are changed to change the liquid level in the annulus.

[0033] (2) Frequency conversion of oil production wells

[0034] For oil production wells in normal operation, the frequency converter is used to increase or decrease the operating frequency to c...

Embodiment 3

[0042]The screw pump well variable parameter metering and diagnosis device used for the measurement of the three-phase flow rate of the oil pipeline at the wellhead of the oil production well and the daily liquid production of a single well is composed of a power supply 1, and the power supply 1 is connected to the circuit breaker 2P2 and the circuit breaker 3P5 respectively. The circuit breaker 3P5 is connected to the transmitter 7 through the transformer 8, the transmitter 7 is connected to the single-chip microcomputer 14, the single-chip microcomputer 14 is connected to the 24V relay 3, and the 24V relay 3 is connected to the AC contactor KM210. The AC contactor KM210 is connected to the thermal relay JR11 with power; the circuit breaker 2P2 is connected to the filter EMI4, the filter EMI4 is connected to the single-chip microcomputer 14, the single-chip microcomputer 14 is connected to the 220V relay 9, and the 220V The relay 9 is connected to the frequency converter 12, a...

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Abstract

The invention relates to a method for measuring the three-phase flow rate of a producing wellhead oil transportation pipeline and the daily fluid production rate of a single well. A traditional three-phase flowmeter is difficult in in-situ practicability and maintenance. The method comprises the following steps of: measuring pulling force, torque, active power and an annular liquid level value of a liquid level sensor, and changing the working condition operating state by the following method: 1. stopping a producing well; 2. converting the frequency of the producing well; 3. adjusting the parameter of the producing well; and 4. injecting the collected liquid in the oil pipe of the producing well into a ring sleeve; enabling the annular liquid level to change respectively through the four modes; the producing well after the working condition changes continuously operates for a period of time t in the working condition state, then returning to operate in the working condition state before change; measuring the parameter before change; and enabling the annular liquid level to change through the working condition change of the producing well and computing the three-phase flow rate of the producing wellhead oil transportation pipeline, the daily fluid production rate of the single well and the change of the annular liquid level. The method is used for measuring the three-phase flow rate of the producing wellhead oil transportation pipeline and the daily fluid production rate of the single well.

Description

Technical field: [0001] The invention relates to two devices and a measuring method; in particular, it relates to a method for measuring the three-phase flow rate of the wellhead oil pipeline of an oil production well and the daily liquid production of a single well and the equipment used therein. Background technique: [0002] The measurement of the three-phase flow rate at the wellhead of oil production wells and the daily liquid production of a single well is a worldwide problem. Traditional three-phase flowmeters are bulky, complex in structure, radioactive, expensive, and the measurement process takes a long time to operate. Practical, difficult to maintain. Invention content: [0003] The purpose of the present invention is to provide a method for measuring the three-phase flow rate of the wellhead oil pipeline of an oil production well and the daily liquid production of a single well by using the screw pump well variable parameter measurement and diagnosis device an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00
Inventor 金凯金奇峰王伟
Owner 哈尔滨斯特凯峰电子有限公司