High-temperature high-pressure glass micro model gripper used for heavy oil thermal recovery

Abstract

The invention discloses a high-temperature high-pressure glass micro model gripper used for heavy oil thermal recovery. The high-temperature high-pressure glass micro model gripper comprises a high-temperature high-pressure bin and high-pressure glass visual windows and further comprises a drawer type micro model support, upper pressing plates and lower pressing plates. The high-temperature high-pressure bin is a square-cylinder-shaped bin body. The upper portion and the lower portion of the inner wall of the bin body are each provided with an annular step. One high-pressure glass visual window is fixed to each annular step. The upper pressing plates and the lower pressing plates are arranged on the outsides of the high-pressure glass visual windows correspondingly. The high-temperature high-pressure bin is provided with a heater leading to an inner cavity of the bin body. The side face of the bin body is further provided with a model support inlet. The drawer type micro model support is pushed into the bin body from the model support inlet. Through the drawer type high-temperature high-pressure gripper, operation is simple, fast and convenient, and the problem of the unreliability of the leakproofness of the bin body due to repeated disassembly and assembly of the visual windows is avoided. A plurality of injection openings and control valves, bull plugs and back-pressure valves of the injection openings are adopted, so that noninterference between injection fluid is achieved, and meanwhile, the continuity of the injection fluid and pressure is ensured.

Description

technical field [0001] The invention relates to a clamping device for heavy oil development, in particular to a high-temperature and high-pressure glass micro model clamper for heavy oil heating. Background technique [0002] Heavy oil has high viscosity, high density, and large flow resistance in production. Thermal recovery is a commonly used method at present. The current glass microscopic simulation experimental device (patent number: 200610165013.X, 200820123024.6, 201310280351.8) has a lower experimental temperature than that of heavy oil thermal recovery, and is especially unsuitable for heavy oil steam flooding and superheated water flooding. The existing invention patents have the following problems in the process of viscous oil thermal recovery glass displacement experiments: [0003] 1. In the process of heavy oil thermal recovery, the experimental temperature is generally higher than 100°C, and the injection pressure is higher than that of conventional crude oil...

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Problems solved by technology

The existing gripper device is repeatedly disassembled when installing the model, which makes the operation of the gripper device inconvenient and the sealing is difficult to guarantee

[0004] 2. In order to ensure the thermal recovery of heavy oil, a certain back pressure needs to be applied to the generation of superheated fluid, and no back pressure was applied in the previous patents

[0005] 3. In the past, the injection fluid of the invention patent was injected by a single hole, which could not guarantee that different injection fluids would not interfere with each other when switching between injections, and could not guarantee the continuity of the pressure during the experiment

[0006] 4. It is impossible to make the visualization effect of the experimental process under high temperature and high pressure better or the thermal insulation performance is superior

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