CN115127950A - High-temperature high-pressure oil well pipe erosion corrosion device capable of achieving multi-section temperature control - Google Patents
High-temperature high-pressure oil well pipe erosion corrosion device capable of achieving multi-section temperature control Download PDFInfo
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- CN115127950A CN115127950A CN202210890488.4A CN202210890488A CN115127950A CN 115127950 A CN115127950 A CN 115127950A CN 202210890488 A CN202210890488 A CN 202210890488A CN 115127950 A CN115127950 A CN 115127950A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 46
- 230000007797 corrosion Effects 0.000 title claims abstract description 45
- 230000003628 erosive effect Effects 0.000 title claims abstract description 34
- 239000003129 oil well Substances 0.000 title claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 239000000919 ceramic Substances 0.000 claims abstract description 27
- 238000009413 insulation Methods 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 238000009991 scouring Methods 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract description 2
- 239000003209 petroleum derivative Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 24
- 239000007789 gas Substances 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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Abstract
The invention relates to the technical field of research on erosion corrosion of oil well pipes adopted by petroleum and natural gas drilling, in particular to a multistage temperature control high-temperature high-pressure oil well pipe erosion corrosion device. The invention provides a multistage temperature-controllable high-temperature high-pressure oil well pipe scouring corrosion device which comprises at least one high-temperature high-pressure check valve and at least two main equipment pipelines, wherein two ends of the high-temperature high-pressure check valve are respectively connected with the main equipment pipelines, an internal test pipe is arranged in each main equipment pipeline, ceramic heating rods are respectively arranged on the outer walls of each main equipment pipeline and the outer walls of the corresponding internal test pipes, and each internal test pipe and each main equipment pipeline are respectively provided with an internal test pipe temperature detector and an equipment main pipeline temperature detector. The invention adopts multi-section temperature control, and can simultaneously test the erosion corrosion of multi-section oil well pipes at a plurality of temperatures; a plurality of ceramic heating rods are also adopted for heating, the ceramic heating rods can resist high-temperature and high-pressure corrosion, the heating speed is high, and the loss is low; the invention adopts the high-temperature high-pressure check valve, thereby avoiding the mutual influence between different test pipe sections due to temperature difference.
Description
Technical Field
The invention relates to the technical field of the research on the erosion corrosion of oil well pipes adopted by oil and natural gas drilling, in particular to a multistage temperature control high-temperature high-pressure oil well pipe erosion corrosion device.
Background
Erosion corrosion is a phenomenon that a material is damaged by erosion and corrosion interaction due to relative motion between a metal surface and a multiphase fluid, widely exists in the production fields of petroleum, chemical engineering and the like, and is local corrosion with high harmfulness. In oil and gas exploitation, the flow rate of liquid-phase media in various devices and equipment is generally high and mostly corrosive, and the addition of a solid phase causes more serious damage to parts of the devices and the equipment. It is reported that 9% of corrosion failures in the oil and gas industry are caused by erosion corrosion. In the oil and gas exploitation process, gravel in the stratum enters an oil well pipe along with multiphase fluid, so that the oil well pipe is seriously scoured and corroded, the oil well pipe is thinned and perforated to fail in advance, safety accidents are seriously caused, and the economic benefit of an enterprise and the life safety of personnel are influenced. Therefore, the method has great significance in researching the erosion corrosion of the pipeline under the condition of simulating the actual oil-gas well working condition.
At present, the erosion-corrosion experimental apparatus is classified into a rotary type, an injection type and a pipe flow type. However, these three types of devices can only perform the erosion corrosion test at a fixed temperature at one time, and cannot simultaneously test the erosion corrosion of a plurality of sections of oil well pipes at a plurality of temperatures. Therefore, a device which can simulate the working conditions of the actual oil-gas well and can simultaneously test the erosion corrosion of the multi-section oil well pipe at multiple temperatures is needed to be researched.
The invention relates to a multistage temperature-controlled high-temperature and high-pressure oil well pipe erosion corrosion device, which can simultaneously test the erosion corrosion of a plurality of stages of oil well pipes at a plurality of temperatures only by connecting an experimental device of the invention with a common pipe flow type erosion corrosion device pipeline.
Disclosure of Invention
The invention aims to solve the problems that the existing scouring device can only carry out the scouring corrosion test at a fixed temperature at one time and cannot simultaneously test the scouring corrosion of a multi-section oil well pipe at a plurality of temperatures, and provides a high-temperature and high-pressure oil well pipe scouring corrosion device capable of controlling the temperature in multiple sections.
The technical scheme provided by the invention for solving the technical problems is as follows: the utility model provides a but high temperature high pressure oil well pipe erosion corrosion device of multistage accuse temperature, includes at least one high temperature high pressure check valve, two at least equipment trunk lines, high temperature high pressure check valve both ends are connected with two equipment trunk lines respectively, be equipped with the internal test tube in the equipment trunk line, all be equipped with ceramic heating rod on the outer wall of equipment trunk line and internal test tube, still be equipped with internal test tube thermoscope, equipment trunk line thermoscope on internal test tube, the equipment trunk line respectively.
The technical scheme is that an internal test tube clamp is arranged in the main pipeline of the equipment, and the internal test tube is clamped in the internal test tube clamp.
A further technical scheme is that flanges are arranged at two ends of the high-temperature and high-pressure check valve, and the equipment main pipeline is connected with the high-temperature and high-pressure check valve through the flanges.
The device further comprises a control box, wherein the control box is electrically connected with the ceramic heating rod, and the heating temperatures of the inner test tube and the equipment main pipeline are controlled by respectively controlling the voltage and the current of the ceramic heating rod.
The further technical scheme is that the main pipeline of the equipment is a titanium alloy pipeline.
The further technical scheme is that the number of the high-temperature high-pressure check valves is two, and the number of the main pipelines of the equipment is three.
The further technical scheme is that heat insulation layers are arranged on the outer walls of the main pipeline of the equipment and the high-temperature high-pressure check valve, and the ceramic heating rod (4) is wrapped by the heat insulation layer (12) on the main pipeline of the equipment (3).
The further technical scheme is that the ceramic heating rods (4) are multiple and are axially and uniformly distributed on the outer walls of the inner test tube (2) and the equipment main pipeline (3) side by side.
The invention has the following beneficial effects:
1. the invention adopts multi-section temperature control, and can simultaneously test the erosion corrosion of multi-section oil well pipes at a plurality of temperatures;
2. the invention respectively heats and controls the temperature of the main pipeline and the inner test tube of the equipment, and controls the temperature more accurately;
3. the ceramic heating rod is heated by adopting a plurality of ceramic heating rods, can resist high-temperature and high-pressure corrosion, and has high heating speed and low loss;
4. the invention adopts the high-temperature high-pressure check valve, thereby avoiding the mutual influence between different test pipe sections due to temperature difference.
Drawings
FIG. 1 is a schematic view of a pipe flow type erosion apparatus to which the present invention is applied;
FIG. 2 is a schematic view of the present invention.
Shown in the figure: 1-a pipe flow type erosion corrosion device; 2-inner test tube; 3-equipment main pipelines; 4-ceramic heating rod; 5-high temperature high pressure check valve; 6-valve clack; 7-a flange; 8-inner test tube thermometers; 9-equipment main pipeline temperature detector; 10-inner test tube clamp; 11-a control box; 12-heat preservation and insulation layer.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention provides a multistage temperature-controllable high-temperature and high-pressure oil well pipe erosion corrosion device which is used on a pipe flow type erosion corrosion device 1 shown in figure 1, the concrete structure of the device is shown in figure 2, and comprises two high-temperature high-pressure check valves 5, three equipment main pipelines 3, a control box 11 and a flange 7, two ends of the high-temperature high-pressure check valve 5 are respectively connected with the main equipment pipeline 3 through flanges 7, an inner test pipe clamp 10 and an inner test pipe 2 are arranged in the main equipment pipeline 3, the outer walls of the main pipeline 3 and the inner test tube 2 of the equipment are both provided with ceramic heating rods 4, the inner test tube 2 is clamped in the inner test tube clamp 10, the main pipeline 3 and the inner test tube 2 are respectively provided with a main pipeline temperature detector 9 and an inner test tube temperature detector 8, the control box 11 is electrically connected with the ceramic heating rod 4, the heating temperature of the inner test tube 2 and the equipment main pipeline 3 is controlled by respectively controlling the voltage and the current of the ceramic heating rod 4.
In the invention, a plurality of ceramic heating rods 4 are respectively fixed on the outer walls of the inner test tube 2 and the main equipment pipeline 3 for heating and temperature control, so that the uniformity of temperature is ensured; the heating temperature of the main equipment pipeline 3 and the inner test pipe 2 is gradually increased from left to right; the high-temperature high-pressure check valve 5 can prevent fluid from flowing backwards, the fluid flows into the left end of the high-temperature high-pressure check valve 5, the valve clack 6 is jacked open and flows into a subsequent right end pipeline, the valve clack 6 blocks the fluid at the right end from flowing backwards by virtue of a spring and the self weight, and further the left end and the right end of the valve clack are prevented from interfering with each other due to different temperatures, so that the test result is not accurate; the inner test tube temperature detector 8 is used for measuring the temperature of the inner test tube 2, and the equipment main pipeline temperature detector 9 is used for testing the temperature of the equipment main pipeline 3.
In the embodiment, the main pipeline 3 of the equipment is a titanium alloy pipeline which can resist high temperature and high pressure corrosion; the ceramic heating rod can resist high temperature and high pressure corrosion; the high-temperature high-pressure check valve 5 can resist high-temperature high-pressure corrosion.
As shown in fig. 2, in this embodiment, in order to prevent temperature loss, it is a preferable embodiment that the outer walls of the main equipment pipe 3 and the high-temperature and high-pressure check valve 5 are both provided with thermal insulation layers 12.
As shown in fig. 2, in the present embodiment, a plurality of ceramic heating rods 4 are axially and uniformly distributed on the outer walls of the inner test tube 2 and the main equipment pipeline 3 side by side.
In practical application, the heating temperature of three pipe sections is gradually increased from left to right, and the erosion corrosion of three sections of oil well pipes at three temperatures is tested simultaneously; the main principle is as follows: the main pipeline 3 of the equipment is filled with fluid, the heating temperatures of 3 pipe sections are different, fixed thermometers are arranged, a plurality of ceramic heating rods are fixed outside the inner test pipes of the 3 pipe sections and the main pipeline of the equipment, and the three pipe sections are respectively subjected to heating control to ensure the uniformity of the temperature; when fluid flows through the high-temperature high-pressure check valve 5, the fluid can only flow into the right end from the left end, the high-temperature high-pressure check valve 5 prevents the fluid from flowing reversely, and therefore the erosion corrosion of three sections of oil well pipes at three temperatures can be tested at one time.
Example 1
Be full of fluid in equipment trunk line 3 the inside, change the heating current of a plurality of ceramic heating rod 4 through control box 11, at first heat 150 for first equipment trunk line and interior test tube 2, change the ceramic heating rod electric current on second equipment trunk line and the interior test tube 2 again and make it heat 180, make it to 210 through the heating temperature of control third equipment trunk line and interior test tube 2 at last, then measure and measure out the temperature display of every section on the control box mainboard with fixed temperature measurement respectively, it is more accurate to the accuse of temperature. The fluid in the main equipment pipeline 3 begins to flow, the fluid only flows into the right end 180 degrees from the left end 150 degrees through the first high-temperature high-pressure check valve after flowing through the first high-temperature high-pressure check valve, the first high-temperature high-pressure check valve blocks the reverse flow of the fluid through the valve clack 6 and the spring inside, the mutual influence of the fluids at the left end and the right end is prevented, the fluid continuously flows through the second high-temperature high-pressure check valve, the reverse flow of the fluid from 210 degrees into 180 degrees is blocked, the mutual influence of test results is avoided, and the erosion corrosion of three sections of oil well pipes at the three temperatures of 150 degrees, 180 degrees and 210 degrees is simultaneously tested at one time.
Example 2
Be full of the fluid in 3 insides of equipment trunk line, the heating current through a plurality of ceramic heating rod of control box 11 changes, at first heat 230 for first equipment trunk line and interior test tube 2, change the ceramic heating rod electric current on second equipment trunk line and the interior test tube 2 again and make it heat 250, make it to 270 through the heating temperature of controlling third equipment trunk line and interior test tube 2 at last, then measure out every temperature display of section on the control box mainboard with fixed temperature measurement respectively, it is more accurate to the accuse of temperature. The fluid in the main pipeline 3 of the equipment starts to flow, the fluid only flows into the right end 250 degrees from the left end 230 degrees through the first high-temperature high-pressure check valve which can block the reverse flow of the fluid through the valve flap 6 and the spring inside, the mutual influence of the fluid at the left end and the fluid at the right end is prevented, the fluid continuously flows through the second high-temperature high-pressure check valve which can block the reverse flow of the fluid into the valve body 250 degrees from 270 degrees, the mutual influence of test results is avoided, and the scouring corrosion of three sections of oil well pipes at the temperature of 230 degrees, 250 degrees and 270 degrees is simultaneously tested at one time.
Although the present invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (8)
1. The utility model provides a but high temperature high pressure oil well pipe erosion corrosion device of multistage accuse temperature, a serial communication port, including at least one high temperature high pressure check valve (5), two at least equipment trunk lines (3), high temperature high pressure check valve (5) both ends are connected with two equipment trunk lines (3) respectively, be equipped with in-test pipe (2) in equipment trunk line (3), all be equipped with ceramic heating rod (4) on the outer wall of equipment trunk line (3) and in-test pipe (2), still be equipped with in-test pipe thermoscope (8), equipment trunk line thermoscope (9) on in-test pipe (2), the equipment trunk line (3) respectively.
2. The multistage temperature-controlled high-temperature and high-pressure oil well pipe erosion corrosion device according to claim 1, wherein an inner test pipe clamp (10) is arranged in the main equipment pipeline (3), and the inner test pipe (2) is clamped in the inner test pipe clamp (10).
3. The high-temperature high-pressure oil well pipe erosion corrosion device capable of realizing multi-section temperature control according to claim 2, wherein flanges (7) are arranged at two ends of the high-temperature high-pressure check valve (5), and the main equipment pipeline (3) is connected with the high-temperature high-pressure check valve (5) through the flanges (7).
4. The multistage temperature-controlled high-temperature and high-pressure oil well pipe erosion corrosion device according to claim 3, characterized in that the device further comprises a control box (11), wherein the control box (11) is electrically connected with the ceramic heating rod (4), and the heating temperature of the inner test pipe (2) and the equipment main pipe (3) is controlled by respectively controlling the voltage and the current of the ceramic heating rod (4).
5. The multistage temperature-controlled high-temperature and high-pressure oil well pipe erosion corrosion device according to claim 1, wherein the main equipment pipeline (3) is a titanium alloy pipeline.
6. The multistage temperature-control high-temperature high-pressure oil well pipe erosion corrosion device according to claim 1, wherein the number of the high-temperature high-pressure check valves (5) is two, and the number of the main equipment pipes is three.
7. The multistage temperature control high-temperature high-pressure oil well pipe erosion corrosion device according to claim 1, wherein heat insulation layers (12) are arranged on the outer walls of the main equipment pipeline (3) and the high-temperature high-pressure check valve (5), and the ceramic heating rod (4) is wrapped by the heat insulation layers (12) on the main equipment pipeline (3).
8. The high-temperature high-pressure oil well pipe erosion corrosion device capable of controlling the temperature in multiple sections according to claim 1, wherein a plurality of ceramic heating rods (4) are axially and uniformly distributed on the outer walls of the inner test pipe (2) and the main equipment pipeline (3) side by side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210890488.4A CN115127950A (en) | 2022-07-27 | 2022-07-27 | High-temperature high-pressure oil well pipe erosion corrosion device capable of achieving multi-section temperature control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210890488.4A CN115127950A (en) | 2022-07-27 | 2022-07-27 | High-temperature high-pressure oil well pipe erosion corrosion device capable of achieving multi-section temperature control |
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| CN115127950A true CN115127950A (en) | 2022-09-30 |
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