One-hole multi-line sealing device and method of high-pressure probes for heavy oil thermal recovery experiment

Abstract

The invention belongs to the technical field of heavy oil thermal recovery experiment devices and discloses a one-hole multi-line sealing device and method of high-pressure probes for a heavy oil thermal recovery experiment. Multiple pressure measuring columns are arranged. The multiple pressure measuring columns penetrate through a seal gland, an anti-rotation press plate, a deformation cone anda seal seat and is locked. The seal seat is limited and fixed to the anti-rotation press plate through a corresponding gap. The seal gland is connected with the seal seat through bolts. The seal glandtightly presses the deformation cone through downward movement. A seal cone face is formed on the seal seat. The seal seat squeezes the deformation cone through the seal cone face. The one-hole multi-line sealing device is resistant to higher temperature, as high as 1000 DEG C; by means of higher temperature resisting and higher pressure resisting technology, the stratum depth of deep research iseffectively extended; and the one-hole multi-line sealing device is simple in structure and good in universality and can be adapted to different high-pressure devices through a adapter. Meanwhile, the one-hole multi-line sealing device of the high-pressure probe breaks through temperature limitation of existing relevant instruments and expands the scientific research range to be wider.

Description

technical field [0001] The invention belongs to the technical field of heavy oil thermal recovery experimental equipment, and in particular relates to a one-hole multi-line sealing device and method for a high-pressure probe used in heavy oil thermal recovery experiments. Background technique [0002] At present, in the experimental fields of petroleum, chemical and energy exploration and development, it is necessary to carry out some laboratory-scale research experiments that simulate the scene, carry out simulations of related theories and experimental models, and often encounter some test-related problems. The most common problem is the test and monitoring of high pressure, which requires the hardware of the equipment to probe deep into the model medium through some or more test probes. When these probes enter the interior of the high-pressure vessel like the pressure pipeline, a series of sealing problems are involved. When sealing the detection pressure probe in a conv...

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Problems solved by technology

[0004] The deficiencies of existing sealing devices are reflected in three aspects: 1. Most of the research content and product design are aimed at the penetration sealing of cables, and the research on the sealing of pressure probes or metal casings is very backward

2. The existing sealing structure can only realize the sealing of a single pressure sensor, and the sealing device occupies a large area, which has a very poor effect on the measurement form of high-density pressure probes

3. The existing sealing materials include polyvinyl chloride (PVC), polyethylene (PE), polyfluoroethylene propylene (F46), polyolefin, etc., and the rubber materials include chlorinated polyethylene (CPE), chlorosulfonated polyethylene (CSM), neoprene rubber, silicone rubber, etc., these materials will have obvious elastic and plastic changes under high pressure environment, resulting in seal failure

[0005] Difficulty in solving the above technical problems: 1. Because metals of different materials have different deformations under high-pressure environments, and under the same pressure, the deformations of metals are generally smaller than those of plastics, which leads to the sealing of metal materials. Difficulty is much higher than the sealing of plastic materials

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