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Device for measuring multiphase fluid of water, sand and air in air well drilling and its method

An air drilling and air measurement technology, applied in the fields of multiphase fluid water, measuring instruments, sand, flow measurement methods and devices, and air measurement devices, to achieve the effect of reliable data and high measurement accuracy

Inactive Publication Date: 2005-11-09
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no gas-liquid-solid three-phase flow device that can measure gas-water-sand on-line at home and abroad.

Method used

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  • Device for measuring multiphase fluid of water, sand and air in air well drilling and its method
  • Device for measuring multiphase fluid of water, sand and air in air well drilling and its method
  • Device for measuring multiphase fluid of water, sand and air in air well drilling and its method

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Experimental program
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Embodiment Construction

[0014] Referring to accompanying drawing, the measuring device of water, sand, air of multiphase fluid in the air drilling of the present invention comprises gas-liquid-solid separator 1, and one end of this gas-liquid-solid separator 1 is connected with the pipeline of multiphase fluid , the other end is connected with an inverted U-shaped pipe 4, the rising section of the inverted U-shaped pipe 4 has a first differential pressure sensor 9, and its descending section is provided with a second differential pressure sensor 10; A venturi 5 and a mixer 6 are connected to the outlet of the effluent line;

[0015] The gas-liquid-solid separator 1 is provided with a one-way valve 2, a pressure gauge 8 and a Venturi nozzle 3 in sequence, and communicates with the mixer 6 through a pipeline;

[0016] The pressure gauge 8 , the Venturi nozzle 3 , the Venturi tube 5 , the first differential pressure sensor 9 , and the second differential pressure sensor 10 are also connected to the comp...

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Abstract

This invention discloses a measuring device and its method of water, sand and air in air drilling well. The device includes gas and liquor and solid separator connected on pipeline of water, sand and air drainage, inverse U type tube, the first differential pressure transducer is set on ascend part of the inverse U type tube, and the second differential pressure transducer is set on descend part. The inverse U type tube is connected to outlet of drainage through Venturi tube and mixer set on pipeline. One way valve, Venturi tube sprayer, Venturi tube, the first differential pressure transducer and the second differential pressure transducer are in turn set on the separator, and they also connected to computer. The Venturi tube sprayer is used to test gas flow, and gas density is revised by manometer. Pressure difference of both sides of the inverse U type is tested by the Venturi tube and then phase ratio of water and sand is got. Computer solves according to multiple items fluid flow to get the volume or weight flow of water and sand.

Description

technical field [0001] The invention belongs to measuring instruments in the technical field of petroleum production, and relates to a flow measuring method and device, in particular to a water, sand and air measuring device and method for multiphase fluids in air drilling. Background technique [0002] Drilling with air-cooled drill bits is a new technology and method for natural gas extraction. Compared with mud-cooled drill bits, this new technology has the advantages of high drilling speed and low cost. A key technology for applying this new method is to measure and monitor the flow rate of the drilling discharge—gas, water, and sand, so as to monitor the geological state during the drilling process at any time. At present, there is no effective method to monitor the flow of gas, water and sand. It can only be estimated and qualitative calculation, and there is no accurate method that can be applied. So far, there is no gas-liquid-solid three-ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00
Inventor 周芳德刘海浪曾亚勤刘磊马怀彦周思怡
Owner XI AN JIAOTONG UNIV
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