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High-temperature high pressure dilatometer

A high-temperature and high-pressure, dilatometer technology, applied in instruments, scientific instruments, measuring devices, etc., can solve the problems of low detection accuracy of ordinary contact dilatometers and inoperability of non-contact dilatometer high-temperature turntables.

Inactive Publication Date: 2008-09-10
QINGDAO TONGCHUN OIL INSTR
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a new type of high-temperature and high-pressure dilatometer, which solves the shortcomings of the low detection accuracy of ordinary contact dilatometers and the failure of high-temperature turntables of non-contact dilatometers.

Method used

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  • High-temperature high pressure dilatometer

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Embodiment Construction

[0013] The specific embodiment of this invention is described below in conjunction with accompanying drawing, but not as the limitation to content of the invention:

[0014] Such as figure 1 The high-temperature and high-pressure dilatometer shown includes a heater 9, and an experiment cup body 8 and a water supply cup 13 are arranged inside the heater 9. The experiment cup body 8 communicates with the water supply cup 13, and a water supply valve 14 is arranged therebetween. The test cup body 8 and the water supply cup 13 are provided with air source connectors 6 and 12 respectively. The upper part of the experimental cup body 8 is provided with a barrel-shaped casing 2, and a heat insulation layer 5 is provided between the barrel-shaped casing 2 and the experimental cup body 8, and a non-contact displacement sensor 11 is arranged inside the barrel-shaped casing 2. The sensor rod 3 of the inner 11 of the displacement sensor extends into the test cup body 8, the non-contact d...

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Abstract

The invention discloses a high-temperature high-pressure dilatometer, relating to a monitoring device for the strata material expansion ratio in petroleum exploitation, comprising a heater, an experiment cup body inside the heater, and a water supply cup and a non-contact displacement transducer communicated with the experiment cup body. The high-temperature high-pressure dilatometer is characterized in that: a barrel-shaped shell is arranged on the upper part of the experiment cup body; an insulation layer is arranged between the shell and the experiment cup body; the non-contact displacement transducer is arranged inside the shell; the transducer bar extends in the experiment cup body; a heat dissipation fan is arranged on the upper part of the transducer. The high-temperature high-pressure dilatometer overcomes the disadvantages that a common contact dilatometer has low detection precision and a non-contact dilatometer cannot work in high-temperature situations.

Description

Technical field: [0001] The invention relates to a monitoring instrument for the expansion rate of formation materials in oil exploitation, in particular to a high-temperature and high-pressure dilatometer. Background technique: [0002] In drilling, especially oil extraction, it is usually necessary to detect the expansion rate of the underlying material, so that an appropriate anti-swelling agent can be added during drilling to ensure that the drill bit is not squeezed by the formation. Therefore, the dilatometer is an important monitoring instrument in oil exploitation. The expansion rate is detected by simulating the underground pressure and temperature through the dilatometer. Most of the common dilatometers are contact dilatometers, but the contact sensor is affected by its own friction. The precision is not high, and the data obtained is often not accurate enough. With the development of technological innovation, non-contact sensors have been developed and applied. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/00G01N33/00
Inventor 曲英君
Owner QINGDAO TONGCHUN OIL INSTR
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