Device and method for simulating corrosive environment of oil and gas well

A corrosive environment, oil and gas well technology, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve the problems of waste of resources, affecting the service life of tubing and casing, slowness, etc.

CN108226017AInactive Publication Date: 2018-06-29PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-06-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a device and method for simulating the corrosive environment of an oil and gas well. The device comprises a liquid-phase reaction container and a gas-phase reaction container, wherein the liquid-phase reaction container comprises a first autoclave body and a first temperature control device arranged at the exterior of the first autoclave body; the gas-phase reaction container comprises a second autoclave body and a second temperature control device for carrying out temperature control on the second autoclave body, and the top of the liquid-phase reaction container is fixedly connected with the bottom of the gas-phase reaction container and mutually communicated with the bottom of the gas-phase reaction container . According to the device, the corrosive environment ofpipelines of the oil and gas well can be presented comprehensively, and accurate corrosion laws of the pipelines of the oil and gas well are obtained, so that the corrosion problem of the pipelines of the oil and gas well is effectively solved.
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Description

technical field

[0001] The invention relates to the field of petroleum exploration and development, in particular to a device and method for simulating the corrosion environment of oil and gas wells. Background technique

[0002] In oil exploration and development, pipeline corrosion often occurs, especially in the annular space formed by the casing and tubing of oil and gas wells.

[0003] The reason for its corrosion is usually because the bottom-hole output fluid of oil and gas wells contains corrosive components such as water, hydrogen sulfide, carbon dioxide, crude oil and natural gas. In some cases, these corrosive components will enter the above-mentioned casing and In the annular space formed by the oil pipe, the outer wall of the oil pipe and the inner wall of the casing in the annular space are severely corroded, which seriously affects the service life of the oil pipe and casing, resulting in waste of resources. However, the above-mentioned corrosion is a long-te...

Examples

Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0035] like figure 1 Shown is a schematic structural diagram of a device for simulating the corrosive environment of oil and gas wells shown in an exemplary embodiment, which includes:

[0036] Liquid phase reaction vessel 10, gas phase reaction vessel 20, gas phase reaction vessel 20 is positioned at the bottom of liquid phase reaction vess...