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Method for synchronous on-line measurement on temperature, pressure and steam dryness in steam injection type well

A measurement method and downhole pressure technology, which is applied in the field of online measurement of the three parameters of dryness, pressure, and temperature of steam injection wells, can solve the problems of inability to measure online and grasp the dryness in real time, and achieve the improvement of gas injection scheme and heavy oil The effect of increased productivity

Active Publication Date: 2014-02-26
东莞市中科原子精密制造科技有限公司
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Problems solved by technology

[0005] In order to solve the technical problems that the downhole pressure, temperature and dryness of the steam injection type cannot be measured online, and the dryness of the steam injected into the oil well cannot be grasped in real time, the present invention provides a synchronous online measurement method for the temperature, pressure and steam dryness of the steam injection type oil well

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  • Method for synchronous on-line measurement on temperature, pressure and steam dryness in steam injection type well
  • Method for synchronous on-line measurement on temperature, pressure and steam dryness in steam injection type well
  • Method for synchronous on-line measurement on temperature, pressure and steam dryness in steam injection type well

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Embodiment Construction

[0035] Such as figure 1 As shown, this online measuring device for temperature, pressure and dryness of steam injection well consists of temperature sensor, pressure sensor, reflectivity sensor, temperature demodulator, pressure demodulator, reflectivity demodulator, memory, industrial computer and downhole Probe composition.

[0036] The industrial computer includes a signal processor and a single-chip memory installed on the circuit board, and the circuit board and the power supply battery are installed in the chassis.

[0037] The downhole probe includes a casing and a closed cylinder arranged inside the casing. An annulus is formed between the casing and the closed casing, and diversion holes are provided on the casing wall. The annulus communicates with the outside of the downhole probe through the flow diversion holes; the casing and the closed casing The upper end is fixed at the wellhead; the temperature sensor and the reflectivity sensor are placed in the airtight cy...

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Abstract

The invention relates to a method for synchronous on-line measurement on temperature, pressure and steam dryness in a steam injection type well. The method comprises steps that: 1, erection of measuring devices: the measuring device comprises a temperature demodulation instrument, a pressure demodulation instrument, a reflectivity demodulation instrument and an industrial control computer which are arranged on the ground, and a temperature sensor, a pressure sensor, a reflectivity sensor and an underground probe which are arranged underground; 2, pressure monitoring; 3, dryness calculation; and 4, underground pressure, underground measurement temperature and a corresponding present dryness value acquired by the industrial control computer are stored. Through the method, technical problems that on-line measurement on the pressure, the temperature, the dryness in the steam injection type well can not be realized and well steam injection dryness can not be grasped in real time are solved, real-time change monitoring of an underground environment is realized for research on oil field thickened oil thermal exploitation technology, real-time monitoring on the temperature, the pressure and the dryness is realized for oil field thermal exploitation in the high temperature high pressure well, an optimized steam injection scheme can be effectively realized, and thickened oil capacity can be improved.

Description

technical field [0001] The invention relates to an on-line measurement method for the temperature, pressure and dryness of three parameters of a steam injection oil well. Background technique [0002] Heavy oil has the characteristics of high viscosity and uneven distribution. The usual mining method is to inject high-temperature and high-pressure steam into the oil well, and then extract it after the oil becomes fluid. It is also an important reference for the rational use of steam resources. The temperature and pressure of the injected steam are generally around 300°C and 20MPa. The research and application of my country's steam thermal extraction of heavy oil technology provides important technical support for the development of my country's petroleum industry and national energy supply. Downhole thermal dynamic monitoring of heavy oil steam injection thermal extraction process is very important. It is the key to understand the effect of thermal injection. , To understan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
Inventor 赵卫张文松朱香平寻鹏飞
Owner 东莞市中科原子精密制造科技有限公司
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