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Device and method for testing high-temperature corrosion and erosion properties of oil well pipe string

A technology of high-temperature corrosion and test equipment, which is applied in the direction of measuring equipment, testing wear resistance, weather resistance/light resistance/corrosion resistance, etc., can solve the problems such as difficult control of particle flow, and achieve the effect of adjustment and change

Active Publication Date: 2013-06-12
PETROCHINA CO LTD
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Problems solved by technology

[0008] The invention provides a test device and test method for the high-temperature corrosion and erosion performance of oil well pipe strings, so as to solve the problem that the particle flow is difficult to control in the existing tests

Method used

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  • Device and method for testing high-temperature corrosion and erosion properties of oil well pipe string
  • Device and method for testing high-temperature corrosion and erosion properties of oil well pipe string
  • Device and method for testing high-temperature corrosion and erosion properties of oil well pipe string

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Embodiment Construction

[0052] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0053] The present invention proposes a test device for high temperature corrosion and erosion performance of oil well string, such as figure 1 As shown, the high-temperature corrosion and erosion performance test device for oil well strings includes: an autoclave, a screw feeder 8 , a water pump 11 , a mixer 13 and a nozzle 16 .

[0054] The autoclave is composed of a jacket 5, a cylinder body 1, an upper cover 2, a lower cover 3, a short cylinder 4, an upper port 25 (sand filling port), a liquid outlet 23, an exhaust port 22 and other components. Autoclave with N 2 Cylinder 30, CO 2 Cylinders 32 and H 2 The S cylinder 33 is connected. Heat the autoclave with heat transfer oil or electric heating rods. First feed N2 to remo...

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Abstract

The invention provides a device and a method for testing high-temperature corrosion and erosion properties of an oil well pipe string. The device for testing the high-temperature corrosion and erosion properties of the oil well pipe string comprises a high-pressure kettle, a screw feeder, a water pump, a mixer and a nozzle, wherein the high-pressure kettle is provided with a sand outlet and a liquid outlet; the inlet end of the screw feeder is connected with the sand outlet of the high-pressure kettle; the inlet end of the water pump is connected with the liquid outlet of the high-pressure kettle through a grain filter device; the mixer is connected with the outlet end of the screw feeder and the outlet end of the water pump, and the outlet end of the water pump is provided with a flowmeter; and the nozzle is connected with the mixer and extends into the high-pressure kettle. The method comprises the following steps of: filtering heated test sand grains from a heated test fluid, and then, delivering the heated test fluid from the high-pressure kettle to the water pump. By using the device and the method, the grain erosion speed, the grain flow and the erosion angle can be independently controlled, so that the test result is more accurate and purposeful.

Description

technical field [0001] The invention relates to the field of performance testing of oil field production tools, and belongs to a high-temperature corrosion and erosion performance test device and test method for oil well pipe strings, which are used for evaluating the damage resistance of oil well pipe strings under high temperature, oil well corrosion conditions and high-speed sandy fluid erosion performance. Background technique [0002] Erosion refers to a type of wear phenomenon in which the surface of a material is damaged when it is impacted by small, loose flowing particles. Oil well string is the necessary equipment for oil exploitation, mainly including drill pipe, casing, oil pipe, sand control pipe and so on. The downhole environment of the oil well is very harsh, and there is a comprehensive effect of high temperature, corrosion, and erosion on the oil well string. High temperature and corrosion will intensify the erosion damage of the oil well string, seriously...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N3/56
Inventor 匡韶华王宝权张建军石磊于丽宏佟姗姗柳燕丽陈楠
Owner PETROCHINA CO LTD
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