Method for measuring high-pressure buffering pot mud-outlet-flow by open channel method

A high-pressure buffer tank, outlet flow technology, applied in the measurement of flow/mass flow, volume/mass flow generated by mechanical effects, measuring devices, etc., can solve problems such as the inability to quantitatively measure mud flow

Inactive Publication Date: 2007-06-13
CHINA GASOLINEEUM SHANGHAI INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of flowmeter can only measure the relative change of mud, and cannot quantitatively measure the mud flow

Method used

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  • Method for measuring high-pressure buffering pot mud-outlet-flow by open channel method
  • Method for measuring high-pressure buffering pot mud-outlet-flow by open channel method
  • Method for measuring high-pressure buffering pot mud-outlet-flow by open channel method

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Experimental program
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Embodiment Construction

[0009] As shown in Figure 1, Figure 2, and Figure 3, the mud enters the high-pressure buffer tank from (1) and flows out of the buffer tank from (5). After the mud flows in, backwater phenomenon is formed upstream of the baffle plate (3), and when the liquid level remains constant, the gate hole (4) keeps flowing out. In Figure 2: when the gate opening is e, the mud shrinks vertically behind the gate due to its inertia, and forms a minimum shrinkage section somewhere downstream. The height hco of the shrinkage section has the following relationship with the gate opening e:

[0010] hco=εe

[0011] In the formula: ε is the vertical shrinkage coefficient, ε is related to the gate type and relative opening e / H. The flow velocity at the shrinkage section of the gate is:

[0012] V CO = φ 2 g ( Ho - hco ) ...

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Abstract

The invention discloses a method to measure high pressure buffer jar slurry outlet flow. The slurry flow would be calculated according to the height of liquid. When the liquid location is lower than baffle, the flow could be calculated by liquid height and openness of water gate. When liquid location is higher than baffle, the flow under baffle could be calculated according to water gate, and the flow over baffle could be calculated according to measuring weir discharge-measurement method. The invention could test slurry outlet flow and is convenient to use.

Description

Technical field: [0001] The invention relates to a method for measuring mud outlet flow in the oil drilling industry, in particular to a method capable of quantitatively measuring mud outlet flow. Background technique: [0002] At present, the device for measuring the mud outlet flow rate in the oil drilling industry generally adopts a handle-type flowmeter, which is composed of a swing handle and an angle sensor. When a certain flow velocity of mud hits the pendulum, the pendulum will deviate by a certain angle, and the angle sensor will measure the angle to obtain the relative amount of mud flow. This kind of flow meter can only measure the relative change of the mud, and cannot quantitatively measure the mud flow. The mud outlet flow rate is a very important parameter in the oil drilling process. Invention content: [0003] In order to overcome the difficulty of quantitatively measuring the mud outlet flow, the invention provides a method for measuring the mud outlet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/52G01F1/704E21B21/08
Inventor 禹荣倪初明
Owner CHINA GASOLINEEUM SHANGHAI INSTR
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