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Multi-round thermal cycle test device for thermal production well casing pipe, and using method thereof

A test device and technology for thermal recovery wells, applied in the direction of measuring devices, testing material strength by applying repetitive force/pulsation force, instruments, etc., can solve problems such as casing damage in thermal recovery wells, and achieve the effect of reducing axial strain

Pending Publication Date: 2021-02-02
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies, to provide a thermal recovery well casing multi-round thermal cycle test device and its use method, to study the performance change of the thermal recovery well casing through the test, and to solve the problem of thermal recovery well casing damage. Theoretical basis

Method used

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  • Multi-round thermal cycle test device for thermal production well casing pipe, and using method thereof
  • Multi-round thermal cycle test device for thermal production well casing pipe, and using method thereof

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Experimental program
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Embodiment

[0035] see figure 1 and figure 2 , The size requirements of the test casing: φ180mm, wall thickness 9.17mm. Install the casing on the large bolts and fix both ends with flanges. Turn on the temperature monitor, set the test temperature to 350°C, and hold the temperature for 24 hours. The temperature monitor gradually rises at a rate of 10°C / min, and reaches the set temperature after 35 minutes. When the temperature detector reaches the set temperature value, turn on the non-contact strain gauge to monitor the strain change of the casing material in real time under the working condition of 350°C. The temperature, strain, and time data of the casing material during the test will be transmitted to the data collection and analysis system. When the holding time is reached, choose air cooling to gradually lower the temperature. This process is a heat recovery well casing thermal cycle test.

[0036] After 0, 3, and 6 times of thermal cycle tests on casings in thermal recovery ...

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Abstract

The invention discloses a multi-round thermal cycle test device for a thermal production well casing pipe, and a using method thereof. The device is characterized in that flange plates are arranged attwo ends of the casing pipe, the flange plates are connected through first bolts, and clamping plates are arranged outside the casing pipe, so that the clamping plates are connected with the flange plates, the casing pipe can be well fixed, the axial strain of the casing pipe is reduced, and moreover, the variation of the strain of the sleeve under the temperature change can be observed. The device realizes the multi-round thermal cycle simulation test under the zero-displacement working condition of the sleeve, and fills the domestic blank.

Description

technical field [0001] The invention belongs to the technical field of multiple rounds of thermal cycle tests for casings in simulated thermal recovery wells, and in particular relates to a multi-round thermal cycle test device for thermal recovery well casings and a use method. Background technique [0002] At present, thermal well casing tests can only be carried out at high temperature or room temperature, and high and low temperature cannot be alternated. However, in the actual working conditions of thermal recovery casing casings, there are three stages including steam injection, well soaking, and oil production. Steam injection is to inject high-temperature and high-pressure hot steam into the well through the wellhead, so that the temperature in the well rises rapidly; In the state of high temperature and high pressure, the oil layer around the downhole is heated; oil recovery is the exploitation of the oil layer softened by high temperature, no heating is needed, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32G01N3/60G01N25/02
CPCG01N3/32G01N3/60G01N25/02G01N2203/0057G01N2203/0224
Inventor 韩礼红陈阳杨尚谕王建军王航潘志勇
Owner BC P INC CHINA NAT PETROLEUM CORP
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