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High-temperature well temperature and pressure dynamic monitoring system

A dynamic monitoring, high-temperature well technology, applied in surveying, wellbore/well components, earth-moving drilling, etc., to achieve the effects of intuitive test results, strong adaptability, and easy installation and operation

Inactive Publication Date: 2013-09-04
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the dynamic liquid level height and the steam dryness value of each layer can be obtained based on the measured temperature and pressure values ​​and wellhead pressure values

Method used

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  • High-temperature well temperature and pressure dynamic monitoring system
  • High-temperature well temperature and pressure dynamic monitoring system
  • High-temperature well temperature and pressure dynamic monitoring system

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Experimental program
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Embodiment Construction

[0015] The following describes the embodiment of the present invention in detail in conjunction with the accompanying drawings: a high-temperature well temperature and pressure dynamic monitoring system, including a balanced diaphragm fluid pressure sensor 1, a temperature sensor 2, a coaxial capillary 3, a capillary suspension card 4, and a capillary safety extraction device 5. Capillary tee 6. Central automatic control system 7. Data storage and remote transmission system 8. Mechanical and electronic direct reading dual display screen 9. Closed-loop micro-gas booster circulation device 11. Balanced diaphragm fluid pressure sensor 1 and temperature The sensor 2 is installed or lowered at each measured position of the oil well, connected with a coaxial capillary 3, and clamped on the capillary suspension card 4 for segmental load-bearing protection along the outer wall of the tubing in the annulus of the tubing and casing In the groove 25, it is upwardly connected to the inner ...

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Abstract

The invention provides a high-temperature well temperature and pressure dynamic monitoring system. According to the high-temperature well temperature and pressure dynamic monitoring system, corresponding data are figured out through processing of software of a central automatic control system (7) and are respectively transmitted to a mechanical electronic direct reading double display screen (9) and a data storage and teletransmission system (8), pressure, temperature, working fluid level height and steam dryness data of various teletransmission layers are respectively displayed and stored, and a technological structure and method for temperature and pressure dynamic monitoring or moving testing of a high-temperature well is completed. According to the high-temperature well temperature and pressure dynamic monitoring system, installation and operation are convenient and fast, interference of other transmission environments does not affect the monitoring system, a drifting phenomenon do not exist, correction is not needed, the monitoring system can stably operate under a high-temperature environment of an oil well for a long time, all the data can be directly read, stored and transmitted in a remote mode, and testing results are intuitive and precise.

Description

technical field [0001] The invention relates to the technical field of diaphragm balance sensors, in particular to a dynamic monitoring system for temperature and pressure of high-temperature wells. Background technique [0002] When crude oil extraction encounters thermal recovery processes such as ultra-deep wells, high-temperature steam injection wells, and fire flooding wells, downhole temperature and pressure data, the most important basis for targeted formulation of enhanced oil recovery processes, have not been able to achieve simultaneous dynamic monitoring so far. Among the various related technologies available at home and abroad, the capillary downhole pressure testing technology can only obtain pressure data, and the volume is too large to waste nitrogen resources; the electronic and optical fiber testing technology cannot meet the heat resistance requirements, and there is a problem of signal drift repair, which cannot Truly reflect the downhole temperature and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/06E21B47/07E21B47/047E21B49/08
Inventor 李载敏蔺爱国孙洪涛王作启李莹史建英王琦
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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