A test method for carbon dioxide resistance performance of rubber sealing ring
A carbon dioxide and test method technology, which is applied in fluid tightness testing, liquid tightness measurement using liquid/vacuum degree, machine/structural component testing, etc. It can solve the problems of no open literature and improve the effectiveness , improve the success rate, and seal reliable effect
Active Publication Date: 2020-01-03
CHINA PETROLEUM & CHEM CORP +1
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[0003] After searching, no publications similar to this application were found
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[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0019] see Figure 1 to Figure 2 , the present invention provides a technical solution: a carbon dioxide resistance test system for rubber seal rings, including a pressure test tool 100, a constant temperature air test box 103, a liquefied carbon dioxide cylinder 105, and a carbon dioxide booster pump 104, and the pressure test tool is placed as a whole Inside the constant temperature air test box, the pressure test tooling includes a pressure chamber shell 1,...
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Abstract
The invention discloses a test method for CO2 resistance of a rubber sealing ring, and the method is used to test the high-pressure CO2 sealing capability of a rubber O-shaped ring for an electronic pressure gauge in the well testing field of a CO2-driven oil reservoir. A rubber O-shaped ring clamp and a pressure vessel simulate the practical single-side bearing state of the sealing ring for the electronic pressure gauge, a temperature-constant air experimental case, a CO2 gas-liquid booster pump and the like are used to simulate extreme working environment conditions including temperature, pressure and medium of the sealing ring, the leakage pressure of the rubber O-shaped ring is measured after simulated test processes that the electronic pressure gauge is placed into a well, deepened gradually, fluctuates with pressure and placed out of the well, and the high-pressure CO2 resistant sealing performance of the rubber O-shaped ring is determined according to the leakage condition and the physical appearance of the rubber-ring after test.
Description
technical field [0001] The invention relates to an oil field downhole instrument sealing technology, in particular to a carbon dioxide resistance test method of a rubber sealing ring. Background technique [0002] Electronic pressure gauge is the main downhole instrument for well testing in oil (gas) fields. It generally adopts rubber O-ring sealing method, simple structure, convenient operation, and its performance meets the sealing requirements of high temperature, high pressure and corrosive fluid downhole environment of general oil and gas wells. In well testing of carbon dioxide flooding reservoirs, conventional rubber O-rings are difficult to withstand high-concentration carbon dioxide corrosion. Brittle rupture, and then cause seal failure, it is necessary to choose to use a sealing ring that is sufficiently resistant to high-pressure carbon dioxide. Domestic standards have no specific regulations or approximate methods so far. GB / T 5720-2008 "O-shaped rubber seal ri...
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IPC IPC(8): G01M3/28
CPCG01M3/2853
Inventor 高安邦李友全岳小华薛元真杨伟华陈清举阎燕徐乐于伟杰王明
Owner CHINA PETROLEUM & CHEM CORP