CN111413270A - Corrosion experimental device for underground ultrahigh temperature of oil and gas reservoir - Google Patents
Corrosion experimental device for underground ultrahigh temperature of oil and gas reservoir Download PDFInfo
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- CN111413270A CN111413270A CN202010345016.1A CN202010345016A CN111413270A CN 111413270 A CN111413270 A CN 111413270A CN 202010345016 A CN202010345016 A CN 202010345016A CN 111413270 A CN111413270 A CN 111413270A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 66
- 238000012360 testing method Methods 0.000 claims abstract description 140
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
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- 229930195733 hydrocarbon Natural products 0.000 claims 8
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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
- G01N17/002—Test chambers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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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 utility model provides a corrosion experiment device for ultra-high temperature in pit of oil gas reservoir, includes pressure control system, temperature control system, preheats cauldron, test cauldron and magnetic coupling mixing system, this pressure control system, this temperature control system correspond respectively with this preheating cauldron, this test cauldron intercommunication that connect in parallel each other together, be provided with on this test cauldron the magnetic coupling mixing system. On one hand, the preheating kettle and the testing kettle can be used independently, the preheating kettle is used as a static testing kettle to obtain the corrosion resistance of the hanging piece and the corrosion inhibition performance of the corrosion inhibitor under a non-stirring state, and the testing kettle is used for obtaining the corrosion resistance of the hanging piece and the corrosion inhibition performance of the corrosion inhibitor under a stirring state.
Description
Technical Field
The invention relates to a corrosion experimental device, in particular to a corrosion experimental device for underground ultrahigh temperature of an oil and gas reservoir.
Background
The broad understanding of the reaction kettle is that the reaction kettle is a container for physical or chemical reaction, and the heating, evaporation, cooling and low-speed mixing functions required by the process are realized through the structural design and parameter configuration of the container.
The traditional corrosion experimental device comprises a pressure control system, a temperature control system, a magnetic coupling stirring system and a reaction kettle. However, experiments in one reaction kettle can only obtain the corrosion resistance of the hanging piece and the corrosion inhibition performance of the corrosion inhibitor in a non-stirring state or a stirring state.
In addition, in the traditional corrosion experiment device, the kettle body and the kettle cover of the reaction kettle are often in threaded connection, so that the thread sticking problem can occur in long-time operation and use.
For example: chinese patent literature discloses a vapor-liquid two-phase flow accelerated corrosion test device (No. CN201020281105.6 bulletin date: 20110615), which is characterized by comprising a test kettle body, an oil bath heating jacket, a kettle body cover, a magnetic force rotating device, a high-temperature reference electrode, a graphite auxiliary electrode, a working electrode, a variable frequency motor, a potentiostat, a corrosion measurement computer, an equipment control box, an inner lining, a gas phase generator, an electric heater and a thermocouple sensor. The invention adopts an electrochemical measurement method to carry out experimental research on the relevant characteristics of vapor-liquid two-phase flow accelerated corrosion, including the measurement of transient corrosion characteristics, corrosion impedance and relevant coefficients of corrosion reaction of a certain material, the relation between mass transfer and corrosion reaction, the relation between vapor-liquid two-phase flow pattern and corrosion speed, the mechanism of generation and damage of a corrosion product film and the critical characteristic of damage. The magnetic rotating device is adopted to realize high-speed rotation, and simultaneously, the excellent sealing property is ensured. However, the inventor finds that the test kettle body and the kettle cover in the patent document are connected by adopting a bolt flange structure, and the thread sticking problem can occur in long-time operation and use.
Disclosure of Invention
The invention aims to: the corrosion experiment device comprises a preheating kettle, a testing kettle, a static testing kettle, a corrosion inhibition performance testing device and a corrosion inhibition experiment device, wherein the preheating kettle is used as the static testing kettle, the corrosion inhibition performance of a hanging piece and a corrosion inhibitor in a non-stirring state is obtained, the testing kettle is used for obtaining the corrosion inhibition performance of the hanging piece and the corrosion inhibitor in a stirring state, the preheating kettle and the testing kettle are used in a matched mode, the preheating time is shortened under the condition that the pressure is not changed, and meanwhile, the corrosion inhibition experiment device is used for testing the corrosion inhibition contrast performance of the hanging piece and the corrosion inhibition contrast performance of the corrosion inhibitor under the non-stirring state and the stirring state.
The invention adopts the technical scheme that the corrosion experiment device for the underground ultrahigh temperature of the oil and gas reservoir comprises a pressure control system, a temperature control system, a magnetic coupling stirring system, a preheating kettle and a testing kettle, wherein the pressure control system and the temperature control system are respectively communicated with the preheating kettle and the testing kettle which are connected in parallel, and the magnetic coupling stirring system is arranged on the testing kettle.
The preheating kettle comprises a preheating kettle cover, a preheating kettle body and a first clamp with a compression bolt, the preheating kettle cover is located and covers an opening in the top of the preheating kettle body, a downward-sunken annular step is arranged at the annular edge of the upper surface of the preheating kettle cover, and an annular bulge is formed in the lower surface of the preheating kettle cover; an annular groove matched with the annular protrusion is formed in the upper surface of the preheating kettle body, a sealing gasket is placed in the annular groove of the preheating kettle body, and an annular opening edge bent outwards is formed in an opening at the top of the preheating kettle body; offer one section annular groove that is the ring shape on the medial surface of first clamp, the side card that goes up in this first clamp annular groove is in preheat the upper surface of kettle cover annular step, downside card in this first clamp annular groove preheats on the lower surface on kettle body annular opening edge, and the annular bottom surface in this first clamp annular groove is laminated respectively preheat kettle cover annular step preheat on the lateral surface on kettle body annular opening edge, clamp bolt installs with threaded connection's mode in the corresponding screw hole that sets up on the first clamp upper surface, the bottom is unscrewed screw hole on the first clamp, the butt arrives on preheating kettle cover annular step's the upper surface, make it is in to preheat annular protrusion on the kettle cover lower surface and will seal pad by even extrusion and laminating in the annular groove of preheating kettle body upper surface.
Furthermore, the inner part of the outer peripheral wall of the preheating kettle body is wound with a spiral cooling channel, the inlet of the cooling channel penetrates out and is positioned on the wall surface of the lower end part of the preheating kettle body, and the outlet of the cooling channel penetrates out and is positioned on the wall surface of the upper end part of the preheating kettle body.
Further, the periphery wall of the preheating kettle body is sleeved with a heat insulation sleeve with a heat insulation effect, an opening at the top of the heat insulation sleeve is provided with an outward bent annular folding edge, and the upper surface of the annular folding edge is attached to the lower surface of the first clamp.
Further, the preheating kettle further comprises a hanging piece connector and an emptying connector, wherein the hanging piece connector is communicated with the preheating kettle body and is arranged on the preheating kettle cover, and the emptying connector is arranged on the bottom surface of the preheating kettle body.
The test kettle comprises a test kettle cover, a test kettle body and a second clamp with a compression bolt, wherein the test kettle cover is located and covers an opening in the top of the test kettle body, a downward-sunken annular step is arranged at the annular edge of the upper surface of the test kettle cover, and an annular bulge is arranged on the lower surface of the test kettle cover; an annular groove matched with the annular protrusion is formed in the upper surface of the test kettle body, a sealing gasket is placed in the annular groove of the test kettle body, and an annular opening edge bent outwards is formed in an opening at the top of the test kettle body; offer one section annular groove that is the ring shape on the medial surface of second clamp, go up the side card in this second clamp annular groove and be in on the upper surface of test kettle lid annular step, downside card in this second clamp annular groove is in on the lower surface on test kettle body annular opening edge, the annular bottom surface in this second clamp annular groove is laminated respectively test kettle lid annular step on the lateral surface on test kettle body annular opening edge, clamp bolt installs with threaded connection's mode in the screw hole that sets up on the second clamp upper surface, the bottom is unscrewed screw hole on the second clamp, the butt arrives on the upper surface of test kettle lid annular step, make annular bulge on the test kettle lid lower surface is in by even extrusion and laminating of sealing pad in the annular groove of test kettle body upper surface.
Furthermore, the inside winding of test kettle body periphery wall has to be spiral helicine cooling channel, and this cooling channel's entry is worn out and is located the wall of test kettle body lower tip, and the export is worn out and is located the wall of test kettle body upper end.
Further, the periphery wall of the test kettle body is sleeved with a heat insulation sleeve with a heat insulation effect, an opening at the top of the heat insulation sleeve is provided with an outward bent annular folding edge, and the upper surface of the annular folding edge is attached to the lower surface of the second clamp.
Furthermore, the test kettle also comprises a hanging piece connector which is communicated with the test kettle body and is arranged on the test kettle cover and an emptying connector which is arranged on the bottom surface of the test kettle body.
The invention has the beneficial effects that:
1. on one hand, the preheating kettle and the testing kettle can be used independently, the preheating kettle is used as a static testing kettle to obtain the corrosion resistance of the hanging piece and the corrosion inhibition performance of the corrosion inhibitor under a non-stirring state, and the testing kettle is used for obtaining the corrosion resistance of the hanging piece and the corrosion inhibition performance of the corrosion inhibitor under a stirring state.
2. According to the invention, the preheating kettle adopts the first clamp and the corresponding compression bolt to connect the preheating kettle cover and the preheating kettle body together, and the testing kettle adopts the second clamp and the corresponding compression bolt to connect the testing kettle cover and the testing kettle body together, so that the kettle body (the preheating kettle body and the testing kettle body) and the kettle cover (the preheating kettle cover and the testing kettle cover) can be quickly fixed and detached. Replaces the prior mode that the kettle body and the kettle cover are connected by screw thread. The problem of thread gluing in long-time operation and use due to the threaded connection of the kettle body and the kettle cover is avoided.
3. In the invention, cooling channels are arranged on the preheating kettle and the testing kettle and are communicated with an external and existing cooling system and the like, so that rapid cooling is realized, and the reaction time is convenient to control.
4. In the invention, the preheating kettle and the testing kettle are respectively sleeved with the heat insulation sleeves, so that personnel can be prevented from being scalded.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
FIG. 3 is a schematic diagram of the structure of the preheated kettle of FIG. 1.
Fig. 4 is a schematic view of the first yoke of fig. 3.
FIG. 5 is a schematic diagram of the test kettle of FIG. 1.
Fig. 6 is a schematic view of the second clip of fig. 5.
The reference numbers in the figures mean: 1-a pressure control system; 101-a vacuum pump; 102-a buffer tank; 103-vacuum gauge; 104-a blow-down valve; 105-a water drain valve; 106-gas booster pump; 107-air compressor; 108-high pressure gas storage tank; 109-oxygen storage tank; 110-carbon dioxide gas holder; 111-pressure reducer; 112-a pre-increased gas tank; 113. 603 — a pressure sensor; 2-temperature control system; 201-temperature sensor; 202-an electric heater; 203-temperature controller; 3-magnetic coupling stirring system; 4-preheating the kettle; 41-preheating a kettle cover; 411 — annular step; 412 — an annular projection; 413-hanging piece joint; 414-pressurized joint; 42-preheating a kettle body; 421. 431-an annular groove; 422-graphite sealing gasket; 423-annular rim; 424 — vent joint; 425-temperature measuring joint; 43 — a first clip; 432 — upper side; 433 — lower side face; 434 — annular bottom surface; 435-hold-down bolt; 436 — cooling channels; 437 — cooling channel inlets; 438 — cooling channel outlet; 439-heat insulation sleeve; 5, testing the kettle; 51-testing a kettle cover; 511-annular step; 512-annular bulge; 513 hanging slice joint; 514-pressure fitting; 52-testing the kettle body; 521. 531-annular groove; 522-graphite sealing gasket; 523-annular rim; 524-emptying joint; 525-temperature measuring joint; 53-second clamp; 532 — upper side; 533-lower side; 534-annular bottom surface; 535 — hold-down bolts; 536 — cooling channel; 537-cooling channel inlet; 538-cooling channel outlet; 539-insulating jackets; 6-waste liquid collector, 601-safety valve; 602-rupture disk safety; 604 — a sampler.
Detailed Description
Example 1
Referring to fig. 1 to 6: the utility model provides a corrode experimental apparatus for ultra-high temperature in oil gas reservoir pit, includes pressure control system 1, temperature control system 2 and magnetic coupling mixing system 3, corrode experimental apparatus still including preheating cauldron 4 and test cauldron 5, pressure control system 1 temperature control system 2 correspond respectively and be in parallel with each other together preheat cauldron 4 test cauldron 5 intercommunication, be provided with on the test cauldron 5 magnetic coupling mixing system 3. On one hand, the preheating kettle 4 and the testing kettle 5 can be used independently, the preheating kettle 4 is used as a static testing kettle 5 to obtain the corrosion resistance of the hanging piece and the corrosion inhibition performance of the corrosion inhibitor under a non-stirring state, the testing kettle 5 is used for obtaining the corrosion resistance of the hanging piece and the corrosion inhibition performance of the corrosion inhibitor under a stirring state, on the other hand, the preheating kettle 4 and the testing kettle 5 can be used in a matched mode to shorten the preheating time under the condition that the pressure is not changed, and meanwhile, the corrosion resistance contrast performance test of the hanging piece and the corrosion inhibition contrast performance test of the corrosion inhibitor under the non-stirring state and the stirring state are obtained.
Referring to FIG. 2: the pressure control system 1 comprises an oxygen scavenging system and a pressure boosting system,
the deoxidization system includes vacuum pump 101, buffer tank 102, vacuum meter 103, atmospheric valve 104 and drain valve 105, vacuum pump 101 with the top intercommunication of buffer tank 102, the top of buffer tank 102 respectively with parallelly connected together each other preheat the cauldron 4 the test cauldron 5 intercommunication, the top of buffer tank 102 still respectively with vacuum meter 103, atmospheric valve 104 intercommunication, bottom and drain valve 105 intercommunication. Control valves for on-off action are arranged between the buffer tank 102 and the preheating kettle 4 and between the buffer tank and the testing kettle 5 respectively. Set up buffer tank 102, can avoid vacuum pump 101 respectively with preheat cauldron 4, test cauldron 5 direct linking to each other, gaseous direct entering vacuum pump 101 can influence vacuum pump 101's life.
The pressurization system comprises a gas pressurization pump 106, an air compressor 107, a high-pressure air storage tank 108 and a pressure reducer 111, wherein a gas inlet of the gas pressurization pump 106 is communicated with a gas outlet of the air compressor 107, a gas outlet of the gas pressurization pump 106 is communicated with a gas inlet of the high-pressure air storage tank 108, a gas outlet of the high-pressure air storage tank 108 is communicated with a gas inlet of the pressure reducer 111, and a gas outlet of the pressure reducer 111 is respectively communicated with the preheating kettle 4 and the testing kettle 5; a pressure sensor 113 is arranged on a pipeline between the high-pressure air storage tank 108 and the pressure reducer 111; the high pressure gas storage tank 108 comprises an oxygen gas storage tank 109 and a carbon dioxide gas storage tank 110, the oxygen gas storage tank 109 and the carbon dioxide gas storage tank 110 are arranged in parallel, the gas outlet of the gas booster pump 106 is communicated with the gas inlets of the oxygen gas storage tank 109 and the carbon dioxide gas storage tank 110 respectively, and the gas inlets of the oxygen gas storage tank 109 and the carbon dioxide gas storage tank 110 are communicated with the gas inlet of the pressure reducer 111 respectively. The gas booster pump 106 is also connected to a pre-booster tank 112. Control valves for opening and closing the gas booster pump 106 are provided between the oxygen gas tank 109 and the carbon dioxide gas tank 110. Control valves for on-off action and pressure sensors 113 are arranged between the oxygen gas storage tank 109 and the carbon dioxide gas storage tank 110 and the pressure reducer 111 respectively; and control valves for on-off action are arranged between the pressure reducer 111 and the preheating kettle 4 and between the pressure reducer 111 and the testing kettle 5 respectively.
The temperature control system 2 comprises two temperature sensors 201, two electric heaters 202 and a temperature controller 203, the temperature controller 203 is respectively connected with the two temperature sensors 201 and the two electric heaters 202, the two temperature sensors 201 are respectively and correspondingly arranged at the bottoms of the preheating kettle 4 and the testing kettle 5, and the two electric heaters 202 are respectively and correspondingly arranged in the preheating kettle 4 and the testing kettle 5.
In addition, the pressure control system 1 and the temperature control system 2 can be replaced by existing mature pressure control systems and temperature control systems, and the magnetic coupling stirring system 3 can be replaced by an existing mature magnetic coupling stirrer, and can ensure the sealing requirement.
The bottom of preheating cauldron 4, test cauldron 5 can communicate waste liquid collector 6, conveniently collects the waste liquid of preheating cauldron 4, in the test cauldron 5. The bottom of the preheating kettle 4 and the bottom of the testing kettle 5 are respectively provided with a pressure sensor 603, a safety valve 601 and a rupture disk safety device 602 on pipelines connected with the waste liquid collector 6, and the safety valve 601 and the rupture disk safety device 602 are arranged in parallel, so that safety during discharge of high-pressure liquid is ensured by the safety valve 601 and the rupture disk safety device 602. Preferably, a sampler 604 is further arranged on a pipeline connecting the emptying joint and the waste liquid collector 6. And as shown in fig. 2: and a plurality of control valves for on-off action are correspondingly arranged on the pipeline according to actual conditions.
Referring to fig. 3 and 4: preheating kettle 4 is including preheating kettle cover 41, preheating kettle body 42 and the first clamp 43 that has clamp bolt 435, and first clamp 43 is at least two, and evenly arranged, clamp bolt 435 be a plurality of, evenly distributed, twist behind the clamp bolt 435, can guarantee to produce even holding down force. The preheating kettle cover 41 is located and covered on the opening at the top of the preheating kettle body 42, the annular edge of the upper surface of the preheating kettle cover 41 is provided with an annular step 411 which is recessed downwards, the lower surface of the preheating kettle cover 41 is provided with an annular bulge 412, the upper surface of the preheating kettle body 42 is provided with an annular groove 421 which is matched with the annular bulge 412, a graphite sealing gasket 422 is arranged in the annular groove 421 of the preheating kettle body 42, the opening at the top of the preheating kettle body 42 is provided with an annular opening edge 423 which is bent outwards, the inner side surface of the first clamp 43 is provided with a section of annular groove in a ring shape, the upper side surface 432 in the annular groove 431 of the first clamp 43 is clamped on the upper surface of the annular step 411 of the preheating kettle cover 41, and the lower side surface 433 in the annular groove 431 of the first clamp 43 is clamped on the lower surface of the annular opening edge 423 of the preheating kettle body 42, the annular bottom surface 434 in this first clamp 43 annular groove 431 is laminated respectively preheat 41 annular steps 411 of cauldron lid preheat on the lateral surface of the cauldron body 42 annular mouth edge 423, clamp bolt 435 is installed with threaded connection's mode in the corresponding screw hole that sets up on the first clamp 43 upper surface, the bottom is unscrewed screw hole on the first clamp 43, the butt arrives preheat on the upper surface of 41 annular steps 411 of cauldron lid, make preheat annular protrusion 412 on the cauldron lid 41 lower surface with sealed the pad 422 (this sealed pad 422 is preferably the graphite packing, can guarantee sealed pad itself has very high corrosion resistance when guaranteeing sealed) by even extrusion and laminating in the annular groove 421 of the cauldron body 42 upper surface of preheating. The preheating kettle 4 adopts the first clamp 43 and the corresponding hold-down bolt 435 to connect the preheating kettle cover 41 and the preheating kettle body 42 together, so that the quick fixing and dismounting of the preheating kettle body 42 and the preheating kettle cover 41 are realized. Replaces the prior mode that the kettle body and the kettle cover are connected by screw thread. The problem of thread gluing in long-time operation and use due to the threaded connection of the kettle body and the kettle cover is avoided.
A spiral cooling channel 436 is wound inside the outer peripheral wall of the preheating kettle body 42, an inlet 437 of the cooling channel penetrates out and is located on the wall surface of the lower end part of the preheating kettle body 42, and an outlet 438 of the cooling channel penetrates out and is located on the wall surface of the upper end part of the preheating kettle body 42. The inlets and outlets (437, 438) of the cooling channels are correspondingly communicated with an external mature cooling system to realize rapid cooling so as to control the reaction time.
The periphery wall of the preheating kettle body 42 is sleeved with a heat insulation sleeve 439 with a heat insulation effect, an opening at the top of the heat insulation sleeve 439 is provided with an outward bent annular folding edge, and the upper surface of the annular folding edge is attached to the lower surface of the first clamping hoop 43. Prevent the scald of the personnel.
The preheating kettle 4 further comprises a hanging piece connector 413 and a pressurizing connector 414 which are communicated with the preheating kettle body 42 and arranged on the preheating kettle cover 41, and an emptying connector 424 and a temperature measuring connector 425 which are arranged on the bottom surface of the preheating kettle body 42. The hanging piece joint is used for containing a to-be-tested object for corrosion test. The pressure connection is intended to communicate with the pressure control system 1 described above. The emptying joint is used for being communicated with the waste liquid collector 6. The temperature measuring connector 425 is used for connecting the temperature sensor 201.
Referring to fig. 5 and 6: the test kettle 5 comprises a test kettle cover 51, a test kettle body 52 and at least two second hoops 53 with compression bolts 535, the second hoops 53 are uniformly arranged, the compression bolts 535 are uniformly distributed, and after the compression bolts 535 are screwed, uniform downward pressure can be generated. The testing kettle cover 51 is located and covered on the opening at the top of the testing kettle body 52, an annular edge of the upper surface of the testing kettle cover 51 is provided with an annular step 511 which is sunken downwards, the lower surface of the testing kettle cover 51 is provided with an annular protrusion 512, the upper surface of the testing kettle body 52 is provided with an annular groove 521 which is matched with the annular protrusion 512, a sealing gasket 522 (the sealing gasket 422 is preferably a graphite sealing gasket which can ensure sealing and high corrosion resistance of the sealing gasket itself) is placed in the annular groove 521 of the testing kettle body 52, an annular opening edge 523 which is bent outwards is arranged at the opening at the top of the testing kettle body 52, a section of annular groove 531 which is annular is arranged on the inner side surface of the second clamp 53, and an upper side surface 532 in the annular groove 531 of the second clamp 53 is clamped on the upper surface of the annular step 511 of the testing kettle cover 51, the lower side surface 533 in the second hoop 53 annular groove 531 is clamped on the lower surface of the annular opening edge 523 of the test kettle body 52, the annular bottom surface 534 in the second hoop 53 annular groove 531 is respectively attached to the annular step 511 of the test kettle cover 51 on the outer side surface of the annular opening edge 523 of the test kettle body 52, the hold-down bolt 535 is mounted in a threaded hole formed in the upper surface of the second hoop 53 in a threaded connection manner, the bottom of the threaded hole is screwed out of the threaded hole in the second hoop 53 and is abutted to the upper surface of the annular step 511 of the test kettle cover 51, so that the graphite sealing gasket 522 is uniformly extruded and attached to the annular groove 521 on the upper surface of the test kettle body 52 by the annular bulge 512 on the lower surface of the test kettle cover 51. The test kettle 5 adopts the second clamp 53 and the corresponding hold-down bolt 535 to connect the test kettle cover 51 with the test kettle body 52, so as to realize the quick fixation and disassembly of the test kettle body 52 and the test kettle cover 51. Replaces the prior mode that the kettle body and the kettle cover are connected by screw thread. The problem of thread gluing in long-time operation and use due to the threaded connection of the kettle body and the kettle cover is avoided.
A spiral cooling channel 536 is wound inside the outer peripheral wall of the test kettle body 52, an inlet 537 of the cooling channel extends out and is located on the wall surface of the lower end part of the test kettle body 52, and an outlet 538 of the cooling channel extends out and is located on the wall surface of the upper end part of the test kettle body 52. Inlets and outlets (537, 538) of the cooling channel are correspondingly distributed and communicated with an external and existing mature cooling system, so that rapid cooling is realized, and the reaction time is conveniently controlled.
The periphery wall of the test kettle body 52 is sleeved with a heat insulation sleeve 539 with a heat insulation effect, an opening at the top of the heat insulation sleeve 539 is provided with an outward bent annular folding edge, and the upper surface of the annular folding edge is attached to the lower surface of the second clamp 53. Prevent the scald of the personnel.
The test kettle 5 further comprises a hanging piece connector 513, a pressurizing connector 514, a venting connector 524 and a temperature measuring connector 525, wherein the hanging piece connector 513 is communicated with the test kettle body 52 and is arranged on the test kettle cover 51, and the venting connector 524 and the temperature measuring connector 525 are arranged on the bottom surface of the test kettle body 52. The hanging piece joint is used for containing a to-be-tested object for corrosion test. The pressure connection is intended to communicate with the pressure control system 1 described above. The emptying joint is used for being communicated with the waste liquid collector 6. The temperature measuring connector 425 is used for connecting the temperature sensor 201.
The preheating kettle 4 and the testing kettle 5 are both made of Hastelloy materials, and have the advantages of good corrosion resistance, high temperature resistance and high pressure resistance.
Example 2
The other structure of the present embodiment 2 is the same as that of the embodiment 1, except that: the first clamp of preheating the cauldron the second clamp of test cauldron is one. The upper side surface of the first hoop annular groove is clamped on the upper surface of the preheating kettle cover annular step, and more than one half of the upper surface of the preheating kettle cover annular step is covered by the upper side surface of the first hoop annular groove, so that the compression bolts arranged on the upper side surface of the first hoop annular groove can be uniformly distributed on the preheating kettle cover and can apply force uniformly; the side card is in on the second clamp annular groove the upper surface of test kettle lid annular step to this second clamp annular groove's side covers more than half the upper surface of test kettle lid annular step to guarantee that the housing bolt who sets up the side on this second clamp annular groove can evenly distributed on the test kettle lid, even application of force.
The technical solutions of the above embodiments are only used for illustrating the present invention, and not for limiting the same. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical scheme can be modified, or part of technical characteristics can be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the present invention in its essence.
Claims (9)
1. The utility model provides a corruption experimental apparatus for ultra-high temperature in pit of oil and gas reservoir, includes pressure control system, temperature control system and magnetic coupling stirring system, its characterized in that: the corrosion experimental device also comprises a preheating kettle and a testing kettle,
the pressure control system and the temperature control system are respectively communicated with the preheating kettle and the testing kettle which are connected in parallel, and the magnetic coupling stirring system is arranged on the testing kettle.
2. The corrosion experimental device for the downhole ultrahigh temperature of a hydrocarbon reservoir according to claim 1, characterized in that: the preheating kettle comprises a preheating kettle cover, a preheating kettle body and a first clamp with a compression bolt, the preheating kettle cover is located on and covers an opening at the top of the preheating kettle body,
the annular edge of the upper surface of the preheating kettle cover is provided with a downward sunken annular step, the lower surface of the preheating kettle cover is provided with an annular bulge,
the upper surface of the preheating kettle body is provided with an annular groove matched with the annular bulge, a sealing gasket is arranged in the annular groove of the preheating kettle body, an opening at the top of the preheating kettle body is provided with an annular opening edge bent outwards,
offer one section annular groove that is the ring shape on the medial surface of first clamp, the side card that goes up in this first clamp annular groove is in preheat the upper surface of kettle cover annular step, downside card in this first clamp annular groove preheats on the lower surface on kettle body annular opening edge, and the annular bottom surface in this first clamp annular groove is laminated respectively preheat kettle cover annular step preheat on the lateral surface on kettle body annular opening edge, clamp bolt installs with threaded connection's mode in the corresponding screw hole that sets up on the first clamp upper surface, the bottom is unscrewed screw hole on the first clamp, the butt arrives on preheating kettle cover annular step's the upper surface, make it is in to preheat annular protrusion on the kettle cover lower surface and will seal pad by even extrusion and laminating in the annular groove of preheating kettle body upper surface.
3. The corrosion experimental device for the downhole ultrahigh temperature of hydrocarbon reservoirs according to claim 2, characterized in that: the inner part of the outer peripheral wall of the preheating kettle body is wound with a spiral cooling channel, the inlet of the cooling channel penetrates out and is positioned on the wall surface of the lower end part of the preheating kettle body, and the outlet of the cooling channel penetrates out and is positioned on the wall surface of the upper end part of the preheating kettle body.
4. The corrosion experimental device for the downhole ultrahigh temperature of hydrocarbon reservoirs according to claim 2, characterized in that: the cover is equipped with the radiation shield sleeve who plays thermal-insulated effect on preheating the periphery wall of the cauldron body, and the opening part at this radiation shield sleeve top has the annular hem of outwards buckling, the upper surface of this annular hem with the lower surface laminating of first clamp.
5. The corrosion experimental device for the downhole ultrahigh temperature of hydrocarbon reservoirs according to claim 2, characterized in that: the preheating kettle also comprises a hanging piece connector which is communicated with the preheating kettle body and is arranged on the preheating kettle cover and an emptying connector which is arranged on the bottom surface of the preheating kettle body.
6. The corrosion experimental device for the downhole ultrahigh temperature of a hydrocarbon reservoir according to claim 1, characterized in that: the test kettle comprises a test kettle cover, a test kettle body and a second clamp with a compression bolt, the test kettle cover is located on and covers the opening at the top of the test kettle body,
the annular edge of the upper surface of the test kettle cover is provided with a downward sunken annular step, the lower surface of the test kettle cover is provided with an annular bulge,
the upper surface of the testing kettle body is provided with an annular groove matched with the annular bulge, a sealing gasket is arranged in the annular groove of the testing kettle body, an opening at the top of the testing kettle body is provided with an annular opening edge bent outwards,
offer one section annular groove that is the ring shape on the medial surface of second clamp, go up the side card in this second clamp annular groove and be in on the upper surface of test kettle lid annular step, downside card in this second clamp annular groove is in on the lower surface on test kettle body annular opening edge, the annular bottom surface in this second clamp annular groove is laminated respectively test kettle lid annular step on the lateral surface on test kettle body annular opening edge, clamp bolt installs with threaded connection's mode in the screw hole that sets up on the second clamp upper surface, the bottom is unscrewed screw hole on the second clamp, the butt arrives on the upper surface of test kettle lid annular step, make annular bulge on the test kettle lid lower surface is in by even extrusion and laminating of sealing pad in the annular groove of test kettle body upper surface.
7. The corrosion experimental device for the downhole ultrahigh temperature of a hydrocarbon reservoir according to claim 6, characterized in that: the inside winding of test kettle body periphery wall has to be spiral helicine cooling channel, and this cooling channel's entry is worn out and is located the wall of test kettle body lower tip, and the export is worn out and is located the wall of test kettle body upper end.
8. The corrosion experimental device for the downhole ultrahigh temperature of a hydrocarbon reservoir according to claim 6, characterized in that: the cover is equipped with the radiation shield sleeve who plays thermal-insulated effect on the periphery wall of the test kettle body, and the opening part at this radiation shield sleeve top has the annular hem of outwards buckling, the upper surface of this annular hem with the lower surface laminating of second clamp.
9. The corrosion experimental device for the downhole ultrahigh temperature of a hydrocarbon reservoir according to claim 6, characterized in that: the test kettle also comprises a hanging piece connector which is communicated with the test kettle body and is arranged on the test kettle cover and an emptying connector which is arranged on the bottom surface of the test kettle body.
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| CN202010345016.1A CN111413270A (en) | 2020-04-27 | 2020-04-27 | Corrosion experimental device for underground ultrahigh temperature of oil and gas reservoir |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678860A (en) * | 2020-07-21 | 2020-09-18 | 中国海洋石油集团有限公司 | High-temperature high-pressure corrosion electrochemical testing device with controllable corrosion environment and testing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678860A (en) * | 2020-07-21 | 2020-09-18 | 中国海洋石油集团有限公司 | High-temperature high-pressure corrosion electrochemical testing device with controllable corrosion environment and testing method |
| CN111678860B (en) * | 2020-07-21 | 2023-04-14 | 中国海洋石油集团有限公司 | High-temperature high-pressure corrosion electrochemical testing device with controllable corrosion environment and testing method |
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Effective date of registration: 20210527 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: SINOPEC Group Applicant after: SINOPEC OILFIELD SERVICE Corp. Applicant after: DOWNHOLE OPERATION BRANCH OF SINOPEC SOUTHWEST PETROLEUM ENGINEERING Co.,Ltd. Address before: No. 9 Jishikou Road, Chaoyang District, Beijing 100020 Applicant before: SINOPEC OILFIELD SERVICE Corp. Applicant before: DOWNHOLE OPERATION BRANCH OF SINOPEC SOUTHWEST PETROLEUM ENGINEERING Co.,Ltd. |