Novel sand filling physical model pipe capable of being used for nuclear magnetic resonance

Abstract

The utility model relates to the technical field of petroleum industry experiments, in particular to a novel sand-filled physical model pipe capable of being used for nuclear magnetic resonance, which comprises an outer-layer ceramic pipe, two alloy end covers, an inner-layer sand-filled pipe body, an inflow pipe and an outflow pipe, the two alloy end covers are respectively in threaded connection with two ends of the outer-layer ceramic pipe, and the inner-layer sand-filled pipe body is arranged in the outer-layer ceramic pipe. The alloy end covers are embedded into the two ends of the outer-layer ceramic pipe correspondingly, the inner-layer sand filling pipe body is arranged in the outer-layer ceramic pipe, and one end of the inflow pipe and one end of the outflow pipe penetrate through the corresponding alloy end covers correspondingly and communicate with the inner-layer sand filling pipe body. The preparation process time consumption and the preparation cost are reduced, the interference of the sand-filled physical model pipe on nuclear magnetic resonance imaging is reduced, the imaging definition and resolution are improved, and meanwhile the device has the advantages of being small in size, portable and easy to move.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum industry experiments, in particular to a novel sand-filled physical model tube that can be used for nuclear magnetic resonance. Background Art

[0002] At present, in the recovery rate experiments of the petroleum industry, sand-filled model tubes are usually used when conducting indoor physical experiments on polymer flooding. The quartz sand along the sand-filled model tubes can be accurately sampled, which improves the accuracy of the experimental results and is widely used in microbial flooding physical simulation experimental devices.

[0003] However, in the prior art, the sand-filled tube has a complex structure, a long preparation process and high cost, and the sand-filled tube is prone to produce an uneven magnetic field under high magnetic field conditions, which affects the accuracy of magnetic resonance imaging. Summary of the invention

[0004] The purpose of the utility model is to provide a novel sand-filled physical model tube that can be used for nuclear magnetic resonance, aiming to solve the technical problems in the prior art that the sand-filled tube has a complex structure, a long preparation process and a high cost, and the sand-filled tube is prone to produce an uneven magnetic field under high magnetic field conditions, which affects the accuracy of nuclear magnetic resonance imaging.

[0005] To achieve the above-mentioned purpose, the utility model adopts a new type of sand-filled physical model tube that can be used for nuclear magnetic resonance, including an outer ceramic tube, an alloy end cap, an inner sand-filled tube body, an inlet pipe and an outlet pipe, the number of the alloy end caps is two, the two alloy end caps are respectively threadedly connected to the two ends of the outer ceramic tube, and are respectively embedded in the two ends of the outer ceramic tube, the inner sand-filled tube body is arranged inside the outer ceramic tube, one end of the inlet pipe and one end of the outflow pipe respectively pass through the corresponding alloy end caps and are connected to the inner sand-filled tube body.

[0006] Each of the alloy end covers has a tube hole, and the corresponding inlet pipe and outlet pipe pass through the tube hole. The outer wall of each alloy end cover is provided with an external thread and a sealing groove, and the external thread is used for threaded connection with the outer ceramic tube.

[0007] Among them, the inner layer sand-filled tube body includes a sand-filled inner tube, a plug and a sealing rubber ring. The number of the sealing rubber rings is multiple, and the number of the plugs is two. Each of the sealing rubber rings is respectively sleeved on the outer wall of the corresponding plug, and each of the plugs is respectively embedded in the two ends of the sand-filled inner tube, and each of the sealing rubber rings is located between the sand-filled inner tube and the plug.

[0008] Wherein, each of the plugs has a flow hole, and the corresponding inlet pipe and outlet pipe penetrate the flow hole and are connected with the sand-filled inner tube.

[0009] Wherein, the inner surface wall and the outer surface wall of the sand-filled inner tube are smooth surfaces.

[0010] Wherein, the outer ceramic tube is made of boron nitride ceramic-based composite material.

[0011] The utility model discloses a novel sand-filled physical model tube for nuclear magnetic resonance, which has the following beneficial effects: after the sand-filled physical model tube is used for displacement, the sample is placed in a constant magnetic field after nuclear magnetic resonance imaging, and radio frequency signals are transmitted and received; the sand-filled physical model tube can not only protect the sample from external interference, but also improve the sensitivity and stability of the nuclear magnetic resonance signal, and effectively solves the problem that the existing sand-filled physical model tube is prone to produce uneven magnetic field under high magnetic field conditions, which affects the accuracy of nuclear magnetic resonance imaging; the size and shape are optimized, the time consumption and cost of the preparation process are reduced, the interference of the sand-filled physical model tube on nuclear magnetic resonance imaging is reduced, the clarity and resolution of the imaging are improved, and the sand-filled physical model tube has the characteristics of small size, light weight and easy mobility. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the outer ceramic tube of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the inner layer sand-filled tube body of the utility model.

[0015] 1-outer ceramic tube, 2-alloy end cap, 3-inflow tube, 4-outflow tube, 5-tube hole, 6-external thread, 7-sealing groove, 8-sand-filled inner tube, 9-plug, 10-sealing rubber ring, 11-circulation hole. DETAILED DESCRIPTION

[0016] See also Figure 1 and Figure 2The utility model provides a new type of sand-filled physical model tube that can be used for nuclear magnetic resonance, including an outer ceramic tube 1, an alloy end cap 2, an inner sand-filled tube body, an inlet pipe 3 and an outlet pipe 4, the number of the alloy end caps 2 is two, the two alloy end caps 2 are respectively threadedly connected to the two ends of the outer ceramic tube 1, and are respectively embedded in the two ends of the outer ceramic tube 1, the inner sand-filled tube body is arranged inside the outer ceramic tube 1, one end of the inlet pipe 3 and one end of the outflow pipe 4 respectively penetrate the corresponding alloy end caps 2 and are connected to the inner sand-filled tube body.

[0017] Furthermore, each of the alloy end caps 2 has a tube hole 5, and the corresponding inlet pipe 3 and the outlet pipe 4 pass through the tube hole 5, and the outer wall of each of the alloy end caps 2 is provided with an external thread 6 and a sealing groove 7, and the external thread 6 is used for threaded connection with the outer ceramic tube 1.

[0018] Furthermore, the inner layer sand-filled tube body includes a sand-filled inner tube 8, a plug 9 and a sealing rubber ring 10. The number of the sealing rubber rings 10 is multiple, and the number of the plugs 9 is two. Each of the sealing rubber rings 10 is respectively sleeved on the outer wall of the corresponding plug 9, and each of the plugs 9 is respectively embedded in the two ends of the sand-filled inner tube 8, and each of the sealing rubber rings 10 is located between the sand-filled inner tube 8 and the plug 9.

[0019] Furthermore, each of the plugs 9 has a flow hole 11 , and the corresponding inlet pipe 3 and outlet pipe 4 pass through the flow hole 11 and are connected to the sand-filled inner tube 8 .

[0020] Furthermore, the inner surface wall and the outer surface wall of the sand-filled inner tube 8 are smooth surfaces.

[0021] Furthermore, the outer ceramic tube 1 is made of boron nitride ceramic-based composite material.

[0022] In this embodiment, the sand-filled physical model tube of the utility model can be used for nuclear magnetic resonance. After the sand-filled physical model tube is used for displacement, the sample is placed in a constant magnetic field after nuclear magnetic resonance imaging and radio frequency signals are transmitted and received. The sand-filled physical model tube can not only protect the sample from external interference, but also improve the sensitivity and stability of the nuclear magnetic resonance signal, effectively solving the problem that the existing sand-filled physical model tube is prone to produce uneven magnetic field under high magnetic field conditions, affecting the accuracy of nuclear magnetic resonance imaging, and is optimized in size and shape, reducing the time and cost of the preparation process, reducing the interference of the sand-filled physical model tube on nuclear magnetic resonance imaging, and improving the clarity and resolution of the imaging. At the same time, it has the characteristics of small size, light weight and easy mobility.

[0023] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A new type of sand-filled physical model tube that can be used for nuclear magnetic resonance, characterized in that: It includes an outer ceramic tube, an alloy end cover, an inner sand-filled tube body, an inlet pipe and an outlet pipe. There are two alloy end covers, which are respectively threadedly connected to the two ends of the outer ceramic tube and are respectively embedded in the two ends of the outer ceramic tube. The inner sand-filled tube body is arranged inside the outer ceramic tube, and one end of the inlet pipe and one end of the outflow pipe respectively penetrate the corresponding alloy end covers and are connected to the inner sand-filled tube body.

2. A novel sand-filled physical model tube for nuclear magnetic resonance as claimed in claim 1, characterized in that: Each of the alloy end covers has a tube hole, and the corresponding inlet pipe and outlet pipe pass through the tube hole. The outer wall of each alloy end cover is provided with an external thread and a sealing groove, and the external thread is used for threaded connection with the outer ceramic tube.

3. A novel sand-filled physical model tube for nuclear magnetic resonance as claimed in claim 1, characterized in that: The inner layer sand-filled tube body comprises a sand-filled inner tube, a plug and a sealing rubber ring. There are multiple sealing rubber rings and two plugs. Each sealing rubber ring is respectively sleeved on the outer wall of the corresponding plug, and each plug is respectively embedded at both ends of the sand-filled inner tube, and each sealing rubber ring is located between the sand-filled inner tube and the plug.

4. A novel sand-filled physical model tube for nuclear magnetic resonance as claimed in claim 3, characterized in that: Each of the plugs has a flow hole, and the corresponding inlet pipe and outlet pipe penetrate the flow hole and communicate with the sand-filled inner pipe.

5. A novel sand-filled physical model tube for nuclear magnetic resonance as claimed in claim 3, characterized in that: The inner surface wall and the outer surface wall of the sand-filled inner tube are smooth surfaces.

6. A novel sand-filled physical model tube for nuclear magnetic resonance as claimed in claim 1, characterized in that: The outer ceramic tube is made of boron nitride ceramic-based composite material.

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