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A Visible Simulated Wellbore Experimental Device

An experimental device and a technology for simulating a wellbore, which is applied in the field of laboratory testing of downhole process tools in oil and gas fields, can solve problems such as poor accuracy of experimental results, invisibility, and impact on site construction safety, and achieve the effect of reducing construction safety risks and improving accuracy

Active Publication Date: 2018-06-01
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the poor accuracy of the experimental results caused by the existing simulated wellbore experimental device being invisible and unreliable experimental data, which in turn affects the safety of on-site construction

Method used

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  • A Visible Simulated Wellbore Experimental Device
  • A Visible Simulated Wellbore Experimental Device
  • A Visible Simulated Wellbore Experimental Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 and image 3 As shown, the present invention provides a visually simulated wellbore experimental device, including a base 2 and a casing one 601 fixed on the base 2, a wellbore 1, and a casing two 602; one end of the casing one 601 is sleeved with the wellbore 1 , the other end is sequentially connected with the second four-way 10, the third four-way 11 and the wellhead 3, the second four-way 10 is located at the end close to casing one 601, the third four-way 11 is located between the second four-way 10 and the wellhead 3 Between, the bypasses of the second four-way 10 and the third four-way 11 are connected with pipelines 5, and gate valves 9 are arranged on the pipelines 5, and the end of one of the pipelines 5 of the second four-way 10 is connected with a pressure sensor 7, The end of another pipeline 5 is connected with a safety plug 8; one end of the second casing 602 is socketed with the wellbore 1, and the other end is connected in series with ...

Embodiment 2

[0024] Such as figure 2 As shown, the well shaft 1 is composed of a plurality of glass tubes 12 connected by flanges 13, and an O-ring 14 is set on the glass tube 12 between the outer surface of the glass tube 12 and the inner surface of the flange 13. The type ring 14 can meet the requirements for sealing and pressure testing of the device.

[0025] The assembly process of the visually simulated wellbore experimental device is as follows: the base 2 is placed on a flat place, the second four-way 10 and the third four-way 11 are connected in series, all four bypasses are connected to the pipeline 5, and all four pipelines 5 are equipped with There is a gate valve 9, the two-way bypass of the third four-way 11 is used as the annular space entrance, the two-way bypass of the second four-way 10 is respectively connected to the pressure sensor 7 and the safety plug 8, and the second four-way 10 is connected to the casing one 601 , pay attention to the height of sleeve 1 601, sle...

Embodiment 3

[0027] On the basis of Example 2, such as figure 2 As shown, in order to prevent the wellhead from rotating, the contact portion between the end of the glass tube 12 and the flange 13 is provided with a rubber gasket 15, and the inner diameter of the rubber gasket 15 is greater than or equal to the inner diameter of the glass tube 12, wherein the rubber gasket 15 is preferably 5 mm thick .

[0028] The assembly process of the visually simulated wellbore experimental device is as follows: the base 2 is placed on a flat place, the second four-way 10 and the third four-way 11 are connected in series, all four bypasses are connected to the pipeline 5, and all four pipelines 5 are equipped with There is a gate valve 9, the two-way bypass of the third four-way 11 is used as the annular space entrance, the two-way bypass of the second four-way 10 is respectively connected to the pressure sensor 7 and the safety plug 8, and the second four-way 10 is connected to the casing one 601 ,...

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Abstract

The invention provides a visually simulated wellbore experiment device, comprising a base on which a wellbore is fixed, two ends of the wellbore are connected with casings through flanges, one end of the casing is connected in series with a first four-way, and the first four-way The two bypasses are connected with pipelines and gate valves. The other end of the casing is connected with the second four-way, the third four-way and the wellhead in turn. The bypasses of the second four-way and the third four-way are connected with pipelines. All are equipped with gate valves, a pressure sensor is connected to the end of one of the pipelines of the second four-way, and a safety plug is connected to the end of the other pipeline. The visually simulated wellbore experimental device provided by the present invention, as a supplement to the existing experimental means, can be intuitively obtained for experiments such as the research on the process flow, the working principle of tools, and the safety evaluation of tools and pipe strings under a pressure of 20 MPa. The experimental results provide experimental technical means for the development of processes and tools, improve the accuracy of the analysis of experimental results, and reduce the safety risks of on-site construction.

Description

technical field [0001] The invention belongs to the field of laboratory experiments for downhole process tool research in oil and gas fields, and in particular relates to a visually simulated wellbore experiment device. Background technique [0002] At present, in the traditional process and tool test wells, the actual size casing (oil) pipes used in the field are usually connected as the test wellbore to carry out simulation experiments. Because the test equipment is opaque, the test process is not visible, such as process feasibility, pipe string running in Passability, anchoring conditions of anchoring tools, setting conditions of packer tools, and fluid flow changes after passing through the tools can only be indirectly measured or estimated by the obtained pressure data, and the experimental data calculation is based on the sensory judgment of the experimenters , Calculation methods are different, the results are quite different. Contents of the invention [0003] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/002
Inventor 邵媛付钢旦王在强任国富任勇蒙鑫赵广民胡相君郭思文冯长青薛晓伟
Owner PETROCHINA CO LTD