Simultaneous online measurement method of temperature, pressure and steam dryness of steam injection oil well

Abstract

The present invention relates to a method for synchronous online measurement of temperature, pressure, and steam dryness of a steam injection oil well, comprising the following steps: 1) Build a measuring device: the measuring device includes a temperature demodulator, a pressure demodulator, and a reflectivity demodulator located on the ground. instrument, industrial computer, temperature sensor, pressure sensor, reflectivity sensor and downhole probe located in the downhole; 2] pressure monitoring; 3] dryness calculation: 4] industrial computer will collect the downhole pressure, downhole measured The dryness value is stored. The invention solves the technical problem 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. Monitoring can solve the problem of real-time control of high-temperature and high-pressure downhole temperature, pressure and dryness in oilfield thermal exploitation, and can effectively realize the optimal gas injection scheme and increase the production capacity of heavy oil.

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...

AI Technical Summary

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

Images