CN111579317A - Auxiliary device for rapidly detecting oil well associated hydrogen sulfide - Google Patents
Auxiliary device for rapidly detecting oil well associated hydrogen sulfide Download PDFInfo
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- CN111579317A CN111579317A CN202010461397.XA CN202010461397A CN111579317A CN 111579317 A CN111579317 A CN 111579317A CN 202010461397 A CN202010461397 A CN 202010461397A CN 111579317 A CN111579317 A CN 111579317A
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- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 54
- 239000003129 oil well Substances 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 239000007789 gas Substances 0.000 claims abstract description 23
- 238000005070 sampling Methods 0.000 claims description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 7
- 238000012031 short term test Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- -1 comprises five parts Chemical compound 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000003466 welding Methods 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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- Immunology (AREA)
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Abstract
The auxiliary device for rapidly detecting the associated hydrogen sulfide in the oil well comprises a trailer, an upper cavity, a middle cavity, a lower cavity and a liquid level meter, wherein the trailer comprises an axle, a main beam, a pin rod and a support leg, the main beam is fixed above the axle, the support leg is fixed below the axle, the main beam is respectively fixed with an upper hanging pipe, a middle hanging pipe, a lower hanging pipe and a limiting pipe from top to bottom, the pin rod respectively penetrates through the upper hanging pipe, the middle hanging pipe and the lower hanging pipe from top to bottom, and the tail end of the pin rod is connected with the limiting pipe through threads; the upper cavity, the middle cavity and the lower cavity are respectively connected with a trailer through the distribution rods from top to bottom; the upper cavity is connected with the middle cavity, the middle cavity is connected with the lower cavity, and the liquid level meter is respectively connected with the upper cavity and the lower cavity through the connecting device. The upper cavity, the middle cavity, the lower cavity and the liquid level meter form a communicated closed cavity through the connecting device, oil well products are in a closed space in the whole operation process, and operating personnel are protected from being damaged by harmful gas hydrogen sulfide.
Description
Technical Field
The invention relates to the technical field of oilfield development, in particular to an auxiliary device for rapidly detecting oil well associated hydrogen sulfide.
Background
During the development of oil fields, some oil well effluents may be associated with hydrogen sulfide gas. Hydrogen sulfide is a highly toxic substance, and the death of people and animals can be caused by the excessive concentration of the hydrogen sulfide, and certain damage can be caused to equipment. In order to ensure the production safety and provide a basis for the protection and reduction treatment of the hydrogen sulfide, the concentration of the associated hydrogen sulfide in the oil well output must be regularly detected at the wellhead of the oil well. A discharge-free self-processing type oil well associated gas hydrogen sulfide sampling detection device (ZL 201520353619.0), an oil extraction wellhead hydrogen sulfide detection tool (ZL 201520084127.6), an oil well hydrogen sulfide detection auxiliary device (ZL 201620853025.0) and a hydrogen sulfide concentration detection device (ZL 201711061480.2) adopt a hydrogen sulfide detector to detect the concentration of hydrogen sulfide, the concentration of hydrogen sulfide at the position of the detector can only be obtained, and compared with a colorimetric tube method, the precision is low. Although the airtight hydrogen sulfide sampling detection device (ZL 201820564518.1) of oil well head was done sealedly to get gas appearance process, can not return all oil gas pressure to the well head flow, dismantles the airtight hydrogen sulfide sampling detection device of oil well head and still has oil gas to spill over to it is long to detect. A hydrogen sulfide sampling tester (ZL 201821216861.3) is suitable for gas source detection and is not completely suitable for detecting associated hydrogen sulfide of an oil well.
Disclosure of Invention
In order to overcome the defects of the technical problems, the invention provides an auxiliary device for rapidly detecting the associated hydrogen sulfide in the oil well.
The auxiliary device for rapidly detecting the associated hydrogen sulfide in the oil well comprises a trailer, an upper cavity, a middle cavity, a lower cavity and a liquid level meter, wherein the trailer comprises an axle, a main beam, a pin rod and a support leg, the main beam is fixed above the axle, the support leg is fixed below the axle, the main beam is respectively fixed with an upper hanging pipe, a middle hanging pipe, a lower hanging pipe and a limiting pipe from top to bottom, the pin rod respectively penetrates through the upper hanging pipe, the middle hanging pipe and the lower hanging pipe from top to bottom, and the tail end of the pin rod is connected with the limiting pipe through threads; the upper cavity, the middle cavity and the lower cavity are respectively connected with a trailer through the distribution rods from top to bottom; the upper cavity is connected with the middle cavity, the middle cavity is connected with the lower cavity, and the liquid level meter is respectively connected with the upper cavity and the lower cavity through a connecting device;
the upper cavity comprises an exhaust valve, an upper cavity body, a sampling blow-down valve, an air inlet valve, a gas sampler and a colorimetric tube, an upper cavity hanging tube is fixed on the back view surface of the upper cavity body, the upper cavity hanging tube is arranged above the upper hanging tube and is concentric with the upper hanging tube, and the upper cavity hanging tube is connected with the trailer through a pin rod; an exhaust pipe joint is fixed at the upper end of the exhaust valve, and an exhaust hose is fixed on the exhaust pipe joint; a composite joint is fixed at the lower end of the exhaust valve, a first upper joint is fixed at the upper end of the upper cavity body, a stepped hole with a small upper part and a large lower part is arranged in the composite joint, a through hole is arranged in the first upper joint, a ceramic air nozzle is arranged at the upper end of the through hole of the first upper joint, and the outer diameter of the first upper joint is connected with a large hole at the lower part of the stepped hole of the composite joint and tightly presses the ceramic air nozzle; a liquid level meter joint for connecting a liquid level meter is fixed on the front view surface of the upper part of the upper cavity body, and the liquid level meter joint is communicated with the inner space of the upper cavity body; a transverse short section for connecting a sampling blow-down valve is fixed on the side surface of the lower part of the upper cavity body, the transverse short section is communicated with the inner space of the upper cavity body, the transverse short section is connected with an inlet of the sampling blow-down valve, a large plug of the sampling blow-down valve is arranged in a large outlet of the sampling blow-down valve, a through hole for installing a gas sampler is formed in the large plug of the sampling blow-down valve, a small plug of the sampling blow-down valve is arranged in a small outlet of the sampling blow-down valve, and a through hole for installing a colorimetric tube is formed in the small plug of the sampling blow; the lower end of the upper cavity body is fixed with a first lower joint which is communicated with the inner space of the upper cavity body, the lower end of the first lower joint is connected with an air inlet valve, and the air inlet valve is connected with the middle cavity.
The auxiliary device for rapidly detecting the associated hydrogen sulfide in the oil well comprises a middle cavity body, a funnel control valve, a pressure gauge, a middle elbow and a pressure gauge control valve, wherein a middle cavity hanging pipe is fixed on the rear view surface of the middle cavity body, is arranged above the middle hanging pipe and is concentric with the middle hanging pipe, and is connected with a trailer through a pin rod; a second upper joint is fixed at the upper end of the middle cavity body, a through hole is formed in the second upper joint and communicated with the inner space of the middle cavity body, and the second upper joint is connected with the air inlet valve; an intermediate joint is fixed on the side surface of the intermediate cavity body and is communicated with the internal space of the intermediate cavity body, one end of an intermediate elbow is connected with the tail end of the intermediate joint, the other end of the intermediate elbow is connected with a first pair of wires, the upper ends of the first pair of wires are connected with a pressure gauge control valve, a pressure gauge joint is fixed on the pressure gauge control valve, and a pressure gauge is fixed on the pressure gauge joint; a water adding elbow is fixed on the left side surface of the lower part of the middle cavity body, the water adding elbow is communicated with the inner space of the middle cavity body, the funnel control valve is fixed at the tail end of the water adding elbow, and the funnel is fixed on the funnel control valve; a liquid inlet joint is fixed on the right side surface of the lower part of the middle cavity body and communicated with the inner space of the middle cavity body, the end part of the liquid inlet joint is connected with a liquid inlet pipe, and the tail end of the liquid inlet pipe is connected with an oil well sampling valve; the lower end of the middle cavity body is fixed with a second lower joint which is connected with the lower cavity body.
The invention relates to an auxiliary device for rapidly detecting oil well associated hydrogen sulfide, wherein a lower cavity comprises a lower exhaust valve, a partition valve, a pipe joint, a first tee joint, a lower cavity body, a second tee joint, a left emptying valve and a lower valve; a third upper joint is fixed at the upper end of the lower cavity body and is communicated with the inner space of the lower cavity body, a dividing valve is fixed on the third upper joint, a lower vent valve, the dividing valve and a pipe joint are respectively connected with three outlets of a first tee joint, and an upper vent head is fixed on the lower vent valve; a lower emptying head is fixed on the front side surface of the lower part of the lower cavity body, the lower emptying head is communicated with the inner space of the lower cavity body, a pipe joint is connected to the lower emptying head, and the pipe joint, a left emptying valve and a lower valve are respectively connected with three outlets of a second tee joint; an emptying elbow is fixed on the left emptying valve; and a third pair of wires is fixed on the lower valve, a lower union is fixed on the third pair of wires, and the lower union is connected with the liquid level meter through a pipeline.
According to the auxiliary device for rapidly detecting the associated hydrogen sulfide in the oil well, the lower end of the liquid level meter is fixedly provided with the emptying valve, the upper end of the liquid level meter is connected with the upper union through a pipeline, the upper union is fixedly provided with the second pair of threads, the second pair of threads are fixedly provided with the upper valve, and the upper valve is connected with the joint of the liquid level meter through a pipeline.
According to the auxiliary device for rapidly detecting the associated hydrogen sulfide in the oil well, the handle is fixed at the upper end of the main beam; the two ends of the axle are respectively fixed with a left wheel and a right wheel, a left wheel locking nut is fixed on the axle at the left side of the left wheel, and a right wheel locking nut is fixed on the axle at the right side of the right wheel.
According to the auxiliary device for rapidly detecting the oil well associated hydrogen sulfide, the upper cavity, the middle cavity, the lower cavity and the liquid level meter form a communicated closed cavity through the connecting device.
The invention has the beneficial effects that: the upper cavity, the middle cavity, the lower cavity and the liquid level meter form a communicated closed cavity through the connecting device, oil well products are pumped into the cavity through the special liquid inlet pipe, the sampling and emptying valve arranged on the upper cavity controls the inlet and the outlet of gas to carry out sampling and testing, the oil well products are all in a closed space in the whole operation process, and the oil well products do not overflow out of the device, so that operators are protected from being damaged by harmful gas hydrogen sulfide. The sampling is carried out close to the liquid level, the concentration of the associated hydrogen sulfide of the oil well output product is accurately tested, and the concentration has important significance for protecting the safety of workers. Through shaking the quick detection auxiliary device of oil well wellhead hydrogen sulfide back and forth, make the hydrogen sulfide evenly distributed in the epicoele, obtain the average concentration of associated hydrogen sulfide, add the hydrogen sulfide that dissolves in the oil water under the ordinary pressure, just can reflect the hydrogen sulfide concentration in the production flow in the production process, this concentration is significant to protection equipment, administers the hydrogen sulfide. The sampling detection device is arranged on the trailer, the trailer is provided with the roller and the support legs, the movement and the placement are convenient, the support legs are fixed to prevent the trailer from tilting in the detection and sampling process, the working strength of operators is reduced, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of an auxiliary device for rapid detection of oil-well associated hydrogen sulfide according to the present invention;
FIG. 2 is a schematic structural view of the trailer of the present invention;
FIG. 3 is a schematic structural view of an upper chamber according to the present invention;
FIG. 4 is a schematic structural diagram of an intermediate chamber according to the present invention;
fig. 5 is a schematic structural view of the lower chamber of the present invention:
FIG. 6 is a schematic structural view of a connecting mechanism of the lower chamber according to the present invention;
fig. 7 is a left side view of the auxiliary device for rapidly detecting oil-well associated hydrogen sulfide of the present invention.
In the figure: 1 trailer, 2 upper cavities, 3 middle cavities, 4 lower cavities, 5 level meters, 214 upper cavity hanging pipes, 315 middle cavity hanging pipes and 409 lower cavity hanging pipes.
The device comprises a handle 101, a main beam 102, a pin rod 103, an upper hanging pipe 104, a middle hanging pipe 105, a lower hanging pipe 106, a limit pipe 107, a support leg 108, an axle 109, a right wheel 110, a left wheel locking nut 111, a right wheel locking nut 112 and a left wheel 113.
201 exhaust hose, 202 exhaust pipe joint, 203 exhaust valve, 204 compound joint, 205 ceramic air nozzle, 206 first joint, 207 level gauge joint, 208 go up the cavity body, 209 sample atmospheric valve little plug, 210 sample atmospheric valve big plug, 211 horizontal nipple joint, 212 sample atmospheric valve, 213 first lower clutch, 214 go up cavity wall hanging pipe, 215 admission valves.
301 second top connection, 302 funnel, 303 middle cavity body, 304 funnel control valve, 305 adds water elbow, 306 second lower clutch, 307 manometer, 308 manometer joint, 309 manometer control valve, 310 first pair of silk, 311 elbow, 312 middle joint, 313 liquid inlet joint, 314 liquid inlet pipe, 315 middle cavity string pipe.
A pipe joint 401, a discharge head 402, a lower exhaust valve 403, a first tee joint 404, a partition valve 405, a third upper joint 406, a cavity body 407, a liquid level meter joint 408 and a cavity hanging pipe 409.
The liquid level meter comprises an upper valve 501, a second pair of wires 502, an upper union 503, a magnetic reversal liquid level meter body 504, a lower union 505, a third pair of wires 506, a lower valve 507, a lower emptying valve 508, a 509 emptying elbow, a tee joint 510, a left emptying valve 511 and a pipe joint 512.
Detailed Description
The invention is further described with reference to the following figures and examples.
The auxiliary device for rapidly detecting the oil well associated hydrogen sulfide mainly comprises five parts, namely a trailer 1, an upper cavity 2, a middle cavity 3, a lower cavity 4, a liquid level meter 5 and the like, and is mainly made of stainless steel, so that the auxiliary device is corrosion-resistant and does not influence the use of the magnetic reversal liquid level meter 5.
The trailer comprises a handle 101, a main beam 102, a pin 103, an upper hanging pipe 104, a middle hanging pipe 105, a lower hanging pipe 106, a limit pipe 107, a support leg 108, an axle 109, a right wheel 110, a left wheel lock nut 111, a right wheel lock nut 112 and a left wheel 113. A main beam 102 is welded in the middle of a handle 101, the upper portion of the main beam 102 is bent backwards by 30 degrees near an upper hanging pipe 104, the upper hanging pipe 104, a middle hanging pipe 105, a lower hanging pipe 106 and a limiting pipe 107 are sequentially welded with the main beam 102 from top to bottom, and a pin 103 penetrates through the upper hanging pipe 104, the middle hanging pipe 105 and the lower hanging pipe 106 from top to bottom and is connected with the limiting pipe 107 through threads.
The upper cavity body consists of an exhaust hose 201, an exhaust pipe joint 202, an exhaust valve 203, a composite joint 204, a ceramic air nozzle 205, a first upper joint 206, a liquid level meter joint 207, an upper cavity body 208, a sampling blow-down valve small rubber plug 209, a sampling blow-down valve large rubber plug 210, a transverse short plug 211, a sampling blow-down valve 212, a first lower joint 213, an upper cavity body hanging pipe 214 and an air inlet valve 215. The upper chamber body 208 is cylindrical in appearance, and has upper and lower end faces welded to annular stainless steel plates, respectively, to an upper joint 206 and a first lower joint 213. The lower side of the composite joint 204 is connected with an upper joint 206 and compresses the ceramic air nozzle 205 to control the air flow rate. The composite joint 204 is connected with the inlet of the exhaust valve 203, the exhaust valve 203 is normally opened, the outlet of the exhaust valve is connected with the exhaust pipe connector 202, the inlet of the exhaust pipe 201 is connected with the exhaust pipe connector 202, and the outlet of the exhaust pipe 201 is arranged in the lower air opening to avoid operator poisoning. The liquid level meter joint 207 is welded on the cylindrical surface in front of the upper part of the upper cavity body 208 and is communicated with the cavity through a cavity wall through hole. The transverse short section 211 is welded on the cylindrical surface on the left side of the lower part of the upper cavity body 208 and is communicated with the cavity through a cavity wall through hole. The inlet of the sampling blow-off valve 212 is connected with the transverse short section 211, the large outlet of the sampling blow-off valve 212 is normally closed, and a hollow sampling blow-off valve large rubber plug 210 is filled in the large outlet and used for installing the gas sampler 7; the small outlet of the sampling emptying valve 212 is normally closed, and a hollow sampling emptying valve small rubber plug 209 is filled in the small outlet and is used for connecting the colorimetric tube 6. The upper cavity hanging tube 214 is welded on the cylindrical surface at the rear of the upper part of the upper cavity body 208, when the upper cavity hanging tube 214 is connected with the trailer, the two tubes are concentric and are positioned above the trailer upper hanging tube 104, and the pin rod 103 passes through the two tubes. A normally open intake valve 215 is connected to the lower surface of the first lower joint 213.
The middle cavity comprises a second upper joint 301, a funnel 302, a middle cavity body 303, a funnel control valve 304, a water adding elbow 305, a second lower joint 306, a pressure gauge 307, a pressure gauge joint 308, a pressure gauge control valve 309, a first pair of wires 310, an elbow 311, a middle joint 312, a liquid inlet joint 313, a liquid inlet pipe 314, a middle cavity hanging pipe 315 and the like. The middle cavity body 303 is cylindrical in appearance, and the second upper joint 301 and the second lower joint 306 are welded to the annular stainless steel plates on the upper end face and the lower end face respectively. The second top connection 301 is connected with the normally open air inlet valve 215, and the upper cavity is communicated with the middle cavity. The water adding elbow 305 is welded on the cylindrical surface on the left side of the lower part of the middle cavity body 303 and is communicated with the cavity through a cavity wall through hole. The water adding elbow 305 is bent at 90 degrees, the upper end of the water adding elbow is connected with a funnel control valve 304, the funnel control valve 304 is normally closed, and a funnel 302 is arranged on the funnel control valve 304. The cylindrical surface on the right side of the lower part of the middle cavity body 303 and the water adding elbow 305 are welded with liquid inlet joints 313 at the positions symmetrical to the welding points, and are communicated with the cavity through cavity wall through holes. One end of the liquid inlet pipe 314 is connected with the liquid inlet joint 313, and the other end is connected with the sampling valve 8 of the oil well. The cylindrical surface on the right side of the upper part of the middle cavity body 303 is welded with a middle joint 312 which is communicated with the cavity through a cavity wall through hole. The middle joint 312 is connected with the first pair of wires 310 through the elbow 311 to the pressure gauge control valve 309, the pressure gauge control valve 309 is normally open, and is connected with the pressure gauge 307 through the pressure gauge joint 308. The middle cavity hanging tube 315 is welded on the cylindrical surface at the rear of the upper part of the middle cavity body 303, when the middle cavity hanging tube 315 is connected with a trailer, the middle cavity hanging tube 315 is positioned on the middle hanging tube 105 of the trailer, the two tubes are concentric, and the pin rod 103 passes through the middle cavity hanging tube.
The lower cavity body comprises a pipe joint 401, an emptying head 402, a lower exhaust valve 403, a first tee joint 404, a partition valve 405, a third upper joint 406, a lower cavity body 407, a liquid level meter joint 408, a lower cavity body hanging pipe 409 and the like. The lower cavity body 407 is cylindrical in appearance, the third upper joint 406 is welded to the annular stainless steel plate on the upper end face, and the lower end face is a circular stainless steel plate. The third upper joint 406 is connected with a normally closed separating valve 405, the upper part of the third upper joint is provided with a first tee 404, the left side of the first tee 404 is connected with a normally closed lower exhaust valve 403 and a venting head 402, the upper part of the first tee 404 is provided with a pipe joint 401, and the pipe joint 401 is connected with the second lower joint 306, so that the communication between the lower cavity and the middle cavity is realized. The cylindrical surface of the lower front side of the lower cavity body 407 is welded with a lower blanking head 408, which is communicated with the cavity through a cavity wall through hole. The lower cavity hanging pipe 409 is welded on a cylindrical surface at the rear of the upper part of the lower cavity body 407, when the lower cavity hanging pipe 409 is connected with a trailer, the lower cavity hanging pipe 409 is positioned above the trailer lower hanging pipe 106, the two pipes are concentric, and the pin rod 103 penetrates through the lower cavity hanging pipe.
The liquid level meter comprises an upper valve 501, a second pair of wires 502, an upper union 503, a magnetic reversal liquid level meter body 504, a lower union 505, a third pair of wires 506, a lower valve 507, a lower emptying valve 508, an emptying elbow 509, a second tee joint 510, a left emptying valve 511, a pipe joint 512 and the like. An upper joint of the magnetic reversal liquid level meter body 504 is connected with an upper union 503, a second pair of wires 502 is connected with an upper valve 501 and the upper union 503, the upper valve 501 is normally open and is connected with a liquid level meter joint 207 of the upper cavity, and therefore the upper cavity is communicated with the liquid level meter. The lower joint of the magnetic inversion liquid level meter body 504 is connected with a lower union 505, a third pair of wires 506 is connected with a lower valve 507 and the lower union 505, the lower valve 507 is normally open and is connected with a second tee joint 510, and the left side of the second tee joint 510 is connected with a lower cavity liquid level meter joint 408 through a pipe joint 512, so that the communication between a lower cavity and a liquid level meter is realized. The right side of the second tee 510 is connected to a lower blow-off valve 508 and a blow-off elbow 509, the lower blow-off valve 508 being normally closed.
The invention has two embodiments in sampling detection.
In the first embodiment, the trailer 1 is parked with the foot 108 in contact with the ground and the gauge 5 perpendicular to the ground. And opening the normally closed separation valve 405, connecting one end of the liquid inlet pipe 314 with the oil well sampling valve 8, opening the sampling valve 8 to observe the rising condition and the pressure change condition of the liquid level meter 5, and closing the oil well sampling valve 8 when the liquid level rises to the upper end surface of the middle cavity 3. After the produced fluid of the oil well enters the middle cavity body 303, the hydrogen sulfide dissolved in the oil water is separated out after the pressure is reduced, the produced fluid enters the upper cavity body 208 along with the rising of the fluid level, and the air in the upper cavity body 208 is displaced to the outside of the cavity. The inlet of the sample vent valve 212 is close to the liquid surface and accumulates toward the liquid surface because hydrogen sulfide is denser than air. The gas sampler 7 is inserted into a large rubber plug 210 of the sampling emptying valve, the colorimetric tube 6 is removed from sealing heads at two ends, and the inlet is inserted into a small rubber plug 209 of the sampling emptying valve. Open the big export of sample atmospheric valve 212 and draw gas sampler 7 plunger, slowly extract intracavity gas, close the import of sample atmospheric valve 212, open the little export of sample atmospheric valve 212, gently push gas sampler 7 plunger, the air current passes through the colour comparison tube, reads out the concentration of associated hydrogen sulfide. This concentration is of significance for protecting the safety of personnel.
In a second embodiment, trailer 1 is parked with feet 108 in contact with the ground and level gauge 5 perpendicular to the ground. And opening the normally closed separation valve 405, connecting one end of the liquid inlet pipe 314 with the oil well sampling valve 8, opening the sampling valve 8 to observe the rising condition and the pressure change condition of the liquid level meter 5, and closing the oil well sampling valve 8 when the liquid level rises to the upper end surface of the middle cavity 3. After the produced fluid of the oil well enters the middle cavity body 303, the hydrogen sulfide dissolved in the oil water is separated out after the pressure is reduced, the produced fluid enters the upper cavity body 208 along with the rising of the fluid level, and the air in the upper cavity body 208 is displaced to the outside of the cavity. The intake valve 215, the exhaust valve 203, and the level gauge upper valve 501 are closed, and the axle 109 is centered to swing back and forth, so that the hydrogen sulfide in the upper chamber body 208 is uniformly distributed. The gas sampler 7 is inserted into a large rubber plug 210 of the sampling emptying valve, the colorimetric tube 6 is removed from sealing heads at two ends, and the inlet is inserted into a small rubber plug 209 of the sampling emptying valve. Open the big export of sample atmospheric valve 212 and draw gas sampler 7 plunger, slowly extract intracavity gas and close the import of sample atmospheric valve 212, open the little export of sample atmospheric valve 212, lightly push gas sampler 7 plunger, the air current passes through the colour comparison tube, reads out the average concentration of associated hydrogen sulfide, and the hydrogen sulfide concentration of dissolving in the oil water under the ordinary pressure in addition, just obtain the hydrogen sulfide concentration in the production flow in the reflection production process, and this concentration has meaning to protection equipment, carries out hydrogen sulfide and subdues.
After detection is finished, the partition valve 405 is closed, the air inlet valve 215, the exhaust valve 203, the upper valve 501 and the lower exhaust valve 403 of the liquid level meter are opened, and the dirty oil and the dirty water are discharged to the dirty oil barrel. The liquid inlet pipe 314 is detached from the sampling valve 8 of the oil well, and the dirty oil and sewage and the residual gas in the cavity are discharged.
After the sewage, oil and sewage and residual air in the cavity are discharged, the sewage oil barrel is connected below the emptying elbow 509 and the lower emptying valve 508, and the lower emptying valve 508 and the left emptying valve 511 are opened to discharge sand, so that blockage is prevented. The separation valve 405 and the funnel control valve 304 are opened, and the middle cavity body 303, the lower cavity body 407 and the liquid level meter 5 are filled with clean water through the funnel 302 for washing. After the washing, the lower vent valve 508 and the left vent valve 511 are closed to make the liquid level flush with the partition valve 405, and the partition valve 405 is closed for standby.
Claims (6)
1. The utility model provides an oil well wellhead hydrogen sulfide short-term test auxiliary device which characterized in that: the novel liquid level meter comprises a trailer (1), an upper cavity (2), a middle cavity (3), a lower cavity (4) and a liquid level meter (5), wherein the trailer (1) comprises an axle (109), a main beam (102), a pin rod (103) and a support leg (108), the main beam (102) is fixed above the axle (109), the support leg (108) is fixed below the axle (109), the main beam (102) is respectively fixed with an upper hanging pipe (104), a middle hanging pipe (105), a lower hanging pipe (106) and a limiting pipe (107) from top to bottom, the pin rod (103) respectively penetrates through the upper hanging pipe (104), the middle hanging pipe (105) and the lower hanging pipe (106) from top to bottom, and the tail end of the pin rod (103) is connected with the limiting pipe (107) through threads; the upper cavity (2), the middle cavity (3) and the lower cavity (4) are respectively connected with the trailer (1) through a pin rod (103) from top to bottom; the upper cavity (2) is connected with the middle cavity (3), the middle cavity (3) is connected with the lower cavity (4), and the liquid level meter (5) is respectively connected with the upper cavity (2) and the lower cavity (4) through a connecting device;
the upper cavity (2) comprises an exhaust valve (203), an upper cavity body (208), a sampling emptying valve (212), an air inlet valve (215), a gas sampler (7) and a colorimetric tube (6), an upper cavity hanging tube (214) is fixed on the rear view surface of the upper cavity body (208), the upper cavity hanging tube (214) is arranged above the upper hanging tube (104) and is concentric with the upper hanging tube (104), and the upper cavity hanging tube (214) is connected with the trailer (1) through a pin rod (4); an exhaust pipe joint (202) is fixed at the upper end of the exhaust valve (203), and an exhaust hose (201) is fixed on the exhaust pipe joint (202); a composite joint (204) is fixed at the lower end of the exhaust valve (203), a first upper joint (206) is fixed at the upper end of an upper cavity body (208), a stepped hole with a small upper part and a large lower part is formed in the composite joint (204), a through hole is formed in the first upper joint (206), a ceramic air nozzle (205) is arranged at the upper end of the through hole of the first upper joint (206), and the outer diameter of the first upper joint (206) is connected with the large hole at the lower part of the stepped hole of the composite joint (204) and tightly presses the ceramic air nozzle (205); a liquid level meter joint (207) used for connecting a liquid level meter (5) is fixed on the front surface of the upper part of the upper cavity body (208), and the liquid level meter joint (207) is communicated with the inner space of the upper cavity body (208); a transverse short section (211) used for connecting a sampling vent valve (212) is fixed on the side face of the lower part of the upper cavity body (208), the transverse short section (211) is communicated with the inner space of the upper cavity body (208), the transverse short section (211) is connected with the inlet of the sampling vent valve (212), a large sampling vent valve rubber plug (210) is arranged in the large outlet of the sampling vent valve (212), a through hole used for installing a gas sampler (7) is formed in the large sampling vent valve rubber plug (210), a small sampling vent valve rubber plug (209) is arranged in the small outlet of the sampling vent valve (212), and a through hole used for installing a colorimetric tube (6) is formed in the small sampling vent valve rubber plug (209); the lower end of the upper cavity body (208) is fixed with a first lower joint (213), the first lower joint (213) is communicated with the inner space of the upper cavity body (208), the lower end of the first lower joint (213) is connected with an air inlet valve (215), and the air inlet valve (215) is connected with the middle cavity (3).
2. The oil well wellhead hydrogen sulfide rapid detection auxiliary device according to claim 1, characterized in that: the middle cavity (3) comprises a middle cavity body (303), a funnel (302), a funnel control valve (304), a pressure gauge (307), a middle elbow (311) and a pressure gauge control valve (309), a middle cavity hanging pipe (315) is fixed on the rear view surface of the middle cavity body (303), the middle cavity hanging pipe (315) is arranged above the middle hanging pipe (105) and is concentric with the middle hanging pipe (105), and the middle cavity hanging pipe (315) is connected with the trailer (1) through a pin rod (4); a second upper joint (301) is fixed at the upper end of the middle cavity body (303), a through hole is formed in the second upper joint (301) and is communicated with the inner space of the middle cavity body (303), and the second upper joint (301) is connected with the air inlet valve (215); an intermediate joint (312) is fixed on the side surface of the intermediate cavity body (303), the intermediate joint (312) is communicated with the inner space of the intermediate cavity body (303), one end of an intermediate elbow (311) is connected with the tail end of the intermediate joint (312), the other end of the intermediate elbow is connected with a first pair of wires (310), the upper end of the first pair of wires (310) is connected with a pressure gauge control valve (309), a pressure gauge joint (308) is fixed on the pressure gauge control valve (309), and a pressure gauge (307) is fixed on the pressure gauge joint (308); a water adding elbow (305) is fixed on the left side surface of the lower part of the middle cavity body (303), the water adding elbow (305) is communicated with the inner space of the middle cavity body (303), a funnel control valve (304) is fixed at the tail end of the water adding elbow (305), and a funnel (302) is fixed on the funnel control valve (304); a liquid inlet joint (313) is fixed on the right side surface of the lower part of the middle cavity body (303), the liquid inlet joint (313) is communicated with the inner space of the middle cavity body (303), the end part of the liquid inlet joint (313) is connected with a liquid inlet pipe (314), and the tail end of the liquid inlet pipe (314) is connected with an oil well sampling valve (8); the lower end of the middle cavity body (303) is fixed with a second lower joint (306), and the second lower joint (306) is connected with the lower cavity (4).
3. The oil well wellhead hydrogen sulfide rapid detection auxiliary device according to claim 1, characterized in that: the lower cavity (4) comprises a lower exhaust valve (403), a partition valve (405), a pipe joint (401), a first tee joint (404), a lower cavity body (407), a second tee joint (510), a left emptying valve (511) and a lower valve (507), a right lower cavity hanging pipe (409) is fixed on the rear view surface of the lower cavity body (407), the lower cavity hanging pipe (409) is arranged above the lower hanging pipe (106) and is concentric with the lower hanging pipe (106), and the lower cavity hanging pipe (409) is connected with the trailer (1) through a pin rod (103); a third upper joint (406) is fixed at the upper end of the lower cavity body (407), the third upper joint (406) is communicated with the inner space of the lower cavity body (407), a partition valve (405) is fixed on the third upper joint (406), a lower exhaust valve (403), the partition valve (405) and a pipe joint (401) are respectively connected to three outlets of a first tee joint (404), and an upper emptying head (402) is fixed on the lower exhaust valve (403); a lower emptying head (408) is fixed on the front side surface of the lower part of the lower cavity body (407), the lower emptying head (408) is communicated with the inner space of the lower cavity body (407), a pipe joint (512) is connected to the lower emptying head (408), and the pipe joint (512), a left emptying valve (511) and a lower valve (507) are respectively connected with three outlets of a second tee joint (510); a vent elbow (509) is fixed on the left vent valve (511); a third pair of wires (506) is fixed on the lower valve (507), a lower union (505) is fixed on the third pair of wires (506), and the lower union (505) is connected with the liquid level meter (5) through a pipeline.
4. The oil well wellhead hydrogen sulfide rapid detection auxiliary device according to claim 1, characterized in that: the lower extreme of level gauge (5) be fixed with and empty valve (508) down, the upper end of level gauge (5) has union (503) through the pipe connection, goes up union (503) and is fixed with second on to silk (502), is fixed with on the second to silk (502) and goes up valve (501), goes up valve (501) and is connected with level gauge joint (207) through the pipeline.
5. The oil well wellhead hydrogen sulfide rapid detection auxiliary device according to claim 1, characterized in that: a handle (101) is fixed at the upper end of the main beam (102); a left wheel (113) and a right wheel (110) are respectively fixed at two ends of the axle (109), a left wheel locking nut (111) is fixed on the axle (109) at the left side of the left wheel (113), and a right wheel locking nut (112) is fixed on the axle (109) at the right side of the right wheel (110).
6. An auxiliary device for rapidly detecting hydrogen sulfide at an oil wellhead as claimed in claim 1, claim 2, claim 3 and claim 4, wherein: and a communicated closed cavity is formed among the upper cavity (2), the middle cavity (3), the lower cavity (4) and the liquid level meter (5) through a connecting device.
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| CN202010461397.XA CN111579317A (en) | 2020-05-27 | 2020-05-27 | Auxiliary device for rapidly detecting oil well associated hydrogen sulfide |
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Effective date of registration: 20231031 Address after: 100020 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Address before: Room 1801, unit 1, building 1, 267 Fenhe Road, Dongying District, Dongying City, Shandong Province Applicant before: Liu Xiaoming |