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Direct measuring method for single-well crude oil gas yield

A measurement method and technology of crude oil, which is applied in measurement, earthwork drilling and production, wellbore/well components, etc., can solve the problems of difficult measurement, complex crude oil environment, and technical difficulty of accurate crude oil measurement equipment, and achieve the effect of simple measurement method

Active Publication Date: 2015-01-07
JINGZHOU MINGDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Crude oil single well measurement has always been a worldwide problem, because the direct measurement of crude oil has great challenges: the composition of crude oil is complex; the environment of crude oil is complex; the flow of crude oil is complex
Therefore, it is very difficult to develop an accurate crude oil metering device that can meet the crude oil production conditions.

Method used

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  • Direct measuring method for single-well crude oil gas yield
  • Direct measuring method for single-well crude oil gas yield
  • Direct measuring method for single-well crude oil gas yield

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] The compressible airtight container collects the sand-removed oil-water mixture produced by a single well within 1 second through the inlet port connected to the oil pipeline. After the collection is completed, the pressure sensor, temperature sensor, density meter and volume measuring meter connected to the airtight container The pressure of the gas in the airtight container was measured to be 0.3MPa, the temperature was 30°C, and the density of the oil-water mixture was 900kg / m 3 And the volume of the airtight container is 0.001m 3 , record the data or transmit the data to the computer; after the measurement is completed, compress the airtight container to a certain degree, and then measure the pressure of the gas in the airtight container to be 0.9MPa, the temperature to be 35°C and the volume of the airtight container to be 0.0005 m 3 , also record or transfer data to a computer. Take the density of water in crude oil as 1000kg / m 3 , the density of oil in crude o...

Embodiment 2

[0095] The compressible airtight container collects the sand-removed oil-water mixture produced by a single well within 0.5s through the inlet port connected to the oil pipeline. After the collection is completed, the pressure sensor, temperature sensor, density meter and volume measurement connected to the airtight container The pressure of the gas in the airtight container is 0.1MPa, the temperature is 20°C, and the density of the oil-water mixture is 960kg / m3 respectively. 3 And the volume of the airtight container is 0.01m 3 , record the data or transmit the data to the computer; after the measurement is completed, compress the airtight container to a certain extent, and after it is stabilized, measure the pressure of the gas in the airtight container to be 0.25MPa, the temperature to be 25°C and the volume of the airtight container to be 0.005 m 3 , also record or transfer data to a computer. Take the density of water in crude oil as 1000kg / m 3 , the density of oil in ...

Embodiment 3

[0097] The compressible airtight container collects the sand-removed oil-water mixture produced by a single well within 2 seconds through the inlet port connected to the oil pipeline. After the collection is completed, the pressure sensor, temperature sensor, density meter and volume measuring meter connected to the airtight container The pressure of the gas in the airtight container was measured to be 0.5MPa, the temperature was 40°C, and the density of the oil-water mixture was 880kg / m 3 And the volume of the closed container is 0.5m 3 , record the data or transmit the data to the computer; after the measurement, compress the airtight container to a certain degree, and after it stabilizes, measure the pressure of the gas in the airtight container to be 1MPa, the temperature to be 43°C and the volume of the airtight container to be 0.3m 3 , also record or transfer data to a computer. Take the density of water in crude oil as 1000kg / m 3 , the density of oil in crude oil is 8...

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Abstract

The invention provides a direct measuring method for single-well crude oil gas yield. The method includes disposing an oil-water mixture produced within unit time t of a single well into a compressable closed container, and measuring volume V1 of the closed container before compression, volume V2 after compression, pressure P1 of gas in the closed container before compression, pressure P2 after compression, temperature T1 of the gas in the closed container before compression and temperature T2 after compression, wherein volume of the oil-water is V liquid, and volume flow of the oil-water mixture of the single well is V liquid / t. Through a volume compression method, volume flow of a gas phase and a liquid phase can be quickly and accurately acquired by utilizing difference of liquid and gas before and after compression so as to acquire mass flow of an oil phase, the gas phase and the liquid phase. Separation of the oil phase, the gas phase and the liquid phase is not needed in the process of measuring, so that the method is simple and convenient, and cold delivery of crude oil can be realized in the process of flow measuring.

Description

technical field [0001] The invention relates to the field of crude oil measurement, in particular to a method for directly measuring single well crude oil and gas production. Background technique [0002] Oilfield oil production is an important indicator of oilfield performance. The measurement of crude oil is a direct representation of oil field production. [0003] Oil fields distribute different oil wells in different areas for oil production. At present, the vast majority of domestic oil production enterprises adopt water injection production technology. Water injection oil recovery technology is to use water injection equipment to inject water of satisfactory quality from the water injection well into the oil layer, maintain the pressure of the oil layer, and displace underground crude oil to the oil well. An oil recovery technique in which more crude oil is displaced from an oil reservoir. Water injection can improve oilfield development speed and recovery rate, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00
CPCE21B47/00
Inventor 袁伯利李南春齐文东戴刚王雄田心春戴群特
Owner JINGZHOU MINGDE TECH CO LTD
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