CN111441768A - Multifunctional oil gas closed sampling detection device - Google Patents
Multifunctional oil gas closed sampling detection device Download PDFInfo
- Publication number
- CN111441768A CN111441768A CN201910041972.8A CN201910041972A CN111441768A CN 111441768 A CN111441768 A CN 111441768A CN 201910041972 A CN201910041972 A CN 201910041972A CN 111441768 A CN111441768 A CN 111441768A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- sampling
- joint
- pipeline
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 92
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 210000004907 gland Anatomy 0.000 claims description 19
- 238000012360 testing method Methods 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 229910052755 nonmetal Inorganic materials 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 abstract description 14
- 238000009434 installation Methods 0.000 abstract description 11
- 230000002265 prevention Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 48
- 239000007789 gas Substances 0.000 description 47
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 11
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 11
- 239000010779 crude oil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/081—Obtaining fluid samples or testing fluids, in boreholes or wells with down-hole means for trapping a fluid sample
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a multifunctional oil gas closed sampling detection device which comprises a closed press-back mechanism, a pipeline, a positioning mechanism and a standard sampling detector, wherein one end of the pipeline is connected with a sampling port of an oil pipeline, the other end of the pipeline is connected with a side wall inlet of a tee joint at the lower end of the closed press-back mechanism, the closed press-back mechanism is positioned and fixed on the oil pipeline through the positioning mechanism, and the pipeline is a telescopic universal joint and is connected with the pipeline. The chain type fixing clip is adopted for positioning, the locking part adopts sawtooth teeth for skid prevention, and the fixed connection of pipelines with different pipe diameters and the separation sampling barrel can be realized; a separation structure is adopted between the piston and the piston rod, so that gas in produced liquid can be fully released; the telescopic universal joint is adopted to connect the pipelines, the two ends are respectively connected and locked in a multidirectional swinging mode, the middle part can be telescopic, the installation is convenient, the bearing pressure is high, and the safety coefficient is high; the ball screw is adopted to reduce the friction resistance, so that the use by an operator is facilitated.
Description
Technical Field
The invention relates to the technical field of periodically recording oil samples or gas sample water samples in the oil field development process, in particular to a multifunctional oil gas closed sampling detection device.
Background
In the process of oil field development, crude oil, formation water, methane, hydrogen sulfide gas, carbon dioxide gas and the like are collected to the ground, and oil samples or gas sample water samples and the like need to be recorded regularly according to relevant regulations and development schemes.
(1) In the process of taking an oil sample, in order to ensure the accuracy of oil sample test data, a sewage discharge barrel must be connected and emptied from a sampling gate during oil sample taking, dead oil condensed between the inner wall of a pipeline and the sampling gate is discharged, and the sample barrel is used for taking the oil sample after fresh oil flows out, so that about 0.2-0.5 kg of crude oil needs to be wasted when each well samples and discharges the dead oil, the yield of the crude oil is influenced, the environment pollution is caused, and a considerable amount of crude oil is discharged when each sample is taken, so that the crude oil loss is caused, and meanwhile, the gas discharged along with the crude oil pollutes the atmospheric environment to a certain extent. If the produced substances contain hydrogen sulfide gas, the hydrogen sulfide is dispersed in the air, and great threat is caused to sampling operators.
(2) At present, when a hydrogen sulfide gas sample or a carbon dioxide gas sample is taken on site, a sampling hose is arranged on a sampling valve, the other end of the sampling hose is placed at the bottom of a sample barrel, a gate is opened to vent, air in the sample barrel is exhausted, and a tester is used for pumping the gas at the bottom of the sample barrel for detection. The two non-closed sampling methods have the problems that the air in the hose needs to be emptied during sampling, the air in the hose needs to be replaced, and then the sample is extracted in an exhaust state, so that on one hand, mixed air in the sample is caused, the sample is not pure, and accurate data cannot be obtained; on the other hand, natural gas leakage is caused, and the contained hydrogen sulfide is dispersed in the air, so that the sampling operation personnel is threatened, and meanwhile, the environment is polluted.
The patent No. CN108487906A discloses a device and a method for hermetically sampling and detecting hydrogen sulfide at an oil well mouth, and partial functions can be realized by the device, but the device belongs to a fixed device, is inconvenient to install, requires huge welding cost for each well, is inconvenient to popularize and apply, can be conveniently and quickly installed at various places of a flow, belongs to a movable device, can realize hermetically sampling, can discharge residual oil gas back into the flow, realizes the function of hermetically sampling residual recovery, and can perform detection on site.
According to the situation, the airtight samplers are installed on the wellhead flow and the external transportation flow, the needed gas is taken out, then a quantitative sampling detector is used for extracting a certain amount of gas, the colorimetric tube is used for carrying out on-site test, and after the test is finished, the residual gas is pressed back to the flow, so that the purpose of sampling the airtight gas and recovering the residual gas is achieved, and the problems are well solved. And meanwhile, during oil sampling, the gate at the lower part can be opened for direct sampling, and gas is not discharged outside, so that the device is safe and environment-friendly.
Disclosure of Invention
The invention aims to provide a multifunctional oil gas closed sampling detection device, which is positioned by adopting a chain type fixing clip, and the locking part adopts sawtooth teeth for skid prevention, so that the fixed connection of pipelines with different pipe diameters and a separation sampling barrel can be realized; a separation structure is adopted between the piston and the piston rod, so that gas in produced liquid can be fully released; the telescopic universal joint is adopted to connect the pipelines, the two ends are respectively connected and locked in a multidirectional swinging mode, the middle part can be telescopic, the installation is convenient, the bearing pressure is high, and the safety coefficient is high; the ball screw is adopted to reduce the friction resistance, so that the use by an operator is facilitated; the bottom of separation sampling bucket is equipped with special sampling channel, the oil sample of admission that can be convenient. Meanwhile, the residual oil gas can be safely and stably discharged back to the flow. The device records the instantaneous hydrogen sulfide content in a unit time flow, and the detection data is accurate. Quick-operation joint can quick sealed butt joint, quick-operation joint, test gate, colour comparison tube plug adopt the three-way type design, the locking gum cover uses with the cooperation of screwing up lock nut, and colour comparison tube convenient connection is firm.
In order to achieve the purpose, the invention adopts the following technical scheme that the multifunctional oil gas closed sampling detection device comprises a closed press-back mechanism, a pipeline and a positioning mechanism, wherein one end of the pipeline is connected with a sampling port of an oil delivery pipe, the other end of the pipeline is connected with a side wall inlet of a tee joint at the lower end of the closed press-back mechanism, the closed press-back mechanism is positioned and fixed on the oil delivery pipe through the positioning mechanism, the standard sampling detector is connected with the sampling port of the closed press-back mechanism, the positioning mechanism comprises a plate type chain, a connecting pin shaft, a V-shaped positioning block, a fastening sleeve, a fastening handle, a pressing cover, a sliding locking block, a fixed locking block, a locking sleeve, a fastening nut, a screw rod and a connecting rod, a V-shaped groove is formed in the left side surface of the V-shaped positioning block, a front guide groove is formed in the front side surface, a rear guide groove is formed in, the right end of the connecting rod is connected with a closed press-back mechanism, the lock sleeve is provided with a chain through hole which is communicated left and right and a locking hole which is communicated front and back to form a cross hole channel which is communicated with each other, the lower end of the locking hole is provided with a fixed locking block, the front end surface of the lock sleeve is provided with a gland, the center of the gland is provided with a threaded hole, a handle stud is arranged in the threaded hole of the gland, the inner end of the handle stud is connected with a sliding locking block and extends into the locking hole, the outer end of the handle stud is connected with a fastening handle, the front end of the plate type chain passes through the front guide groove of the V-shaped positioning block and then passes through the chain through hole of the lock sleeve, the plate type chain is clamped and fixed between the sliding locking block and the fixed locking block, the left end surface of the lock sleeve is close to the right end surface of the front guide groove, the, the left end of the locking nut is propped against the right end face of the locking sleeve, the left end face of the locking sleeve leans against the right end face of the rear guide groove, and the plate-type chain and the V-shaped positioning block are simultaneously and tightly held on the outer circumferential wall of the oil conveying pipe.
The left side surface of the lock sleeve is provided with anti-skid sawteeth, and the right end surface of the front guide groove of the V-shaped positioning block is also provided with corresponding anti-skid sawteeth, namely the anti-skid sawteeth on the left side surface of the lock sleeve are clamped on the anti-skid sawteeth on the right end surface of the front guide groove of the V-shaped positioning block; the left side surface of the adapter sleeve is provided with anti-skid sawteeth, and the right end surface of the rear guide groove of the V-shaped positioning block is also provided with corresponding anti-skid sawteeth, namely, the anti-skid sawteeth on the left side surface of the adapter sleeve are clamped on the anti-skid sawteeth on the right end surface of the rear guide groove of the V-shaped positioning block.
The lock sleeve is provided with a screw hole, a fastening screw is installed in the screw hole, the fixed locking block is fixed through the fastening screw, the gland is fixed on the front side face of the lock sleeve through a screw, the left end of the connecting rod is in threaded connection with a central threaded hole formed in the V-shaped positioning block or is directly welded in the middle of the right side face of the V-shaped positioning block, and the right end of the connecting rod is welded with the closed press-back mechanism.
Airtight mechanism of returning of pressing includes cylinder body, piston, ball screw, ball nut, end cover, the piston is installed at the cylinder body inner chamber, and the recess is seted up to the piston up end, inlays non-metallic cover in the recess, the cylinder body has upper port and lower port, cylinder body upper port fixed end cover, end cover centre bore installation ball nut, ball screw and ball nut cooperation installation, ball screw lower extreme suit angular contact bearing, angular contact bearing can stretch into in the non-metallic cover downwards, the gas port is seted up to the cylinder body lateral wall, and gas port installation sample connection connects, and the vertical distance of gas port to ball nut bottom is greater than the piston height, lower port connection lower clutch under the cylinder body, three-way upper shed is connected to the lower clutch, and liquid sampling valve is connected to the three-way lower shed.
The end cover is in threaded connection with the upper end port of the cylinder body, the ball nut fixes the end cover through the installation screw, the end cover is provided with an exhaust hole which is communicated up and down, and the outer wall of the piston is provided with a sealing ring which is sealed with the inner wall of the cylinder body.
And the outer wall of the lower end of the ball screw is clamped with a baffle ring, and the baffle ring blocks the lower end face of the angular contact bearing.
The pipeline is a telescopic universal joint connecting pipeline.
The telescopic universal joint connecting pipeline comprises a telescopic pipe assembly, a first spherical joint and a second spherical joint, the right end of the telescopic pipe assembly is connected with the first spherical joint, the right end of the first spherical joint is connected with the inlet of the side wall of the tee joint through the first coupling, the left end of the telescopic pipe assembly is connected with the second spherical joint, the left end of the second spherical joint is connected with the lower right opening of a 360-degree rotary elbow through the second coupling, and the upper right opening of the 360-degree rotary elbow is connected with an oil conveying pipe valve on an oil conveying pipe.
The telescopic pipe assembly comprises a sleeve and a telescopic pipe which are sleeved together, the right end of the sleeve is in threaded connection with a first fastening and pressing cover, the right end face of the sleeve is provided with a spherical surface, the first fastening and pressing cover is provided with a central hole, the inner diameter of the central hole of the first fastening and pressing cover is smaller than the diameter of a ball head of the first shape joint, and the ball head of the first shape joint extends into the first fastening and pressing cover and is attached to the spherical surface of the right end face of the sleeve; the left end of the extension tube is in threaded connection with the second tightening pressure cover, the left end face of the extension tube is provided with a spherical surface, the second tightening pressure cover is provided with a central hole, the inner diameter of the central hole of the second tightening pressure cover is smaller than the diameter of the ball head of the second shape joint, and the ball head of the second shape joint extends into the second tightening pressure cover and is attached to the spherical surface of the left end face of the extension tube.
The inner wall of the sleeve is provided with a sealing ring which is sealed with the outer wall of the telescopic pipe, the left end of the sleeve is connected with a locking nut in a thread-buckling mode, and a tapered locking ring is sleeved between the locking nut and the telescopic pipe.
The standard sampling detector comprises a detector cylinder body, a detector piston, a quick connector, a test gate and a sample tube, wherein a lower port of the sample tube is connected with an upper port of the detector cylinder body, the upper port of the sample tube is connected with a lock nut, the lock nut is sleeved with a lock rubber sleeve, an outlet of the quick connector is communicated with a radial first hole formed in the sample tube, the test gate is connected to a radial second hole formed in the sample tube, and the lock nut is connected with a plug of the colorimetric tube.
Compared with the prior art, the invention has the following beneficial effects:
(1) the chain type fixing clip is adopted, V-shaped positioning is adopted, the locking part adopts sawtooth tooth-shaped skid resistance, and the fixed connection of pipelines with different pipe diameters and the separation sampling barrel can be realized;
(2) a separation structure is adopted between the piston and the piston rod, so that gas in produced liquid can be fully released;
(3) the telescopic universal joint is adopted to connect the pipelines, the two ends of the telescopic universal joint are respectively connected and locked in a swinging mode, the middle part of the telescopic universal joint can be telescopic, the installation is convenient, the bearing pressure is high, and the safety coefficient is high; meanwhile, the pipeline is connected with a 360-degree rotary elbow, so that the whole pipeline can be more flexibly turned as required;
(4) the ball screw is adopted to reduce the friction resistance, so that the use by an operator is facilitated;
(5) the bottom of separation sampling bucket is equipped with special sampling channel, the oil sample of admission that can be convenient.
(6) The residual oil gas can be safely and stably discharged back to the flow.
(7) When a gas sample is taken, the sampling port connector and the quick connector are connected with a standard sampling detector to take out gas with a standard volume, the colorimetric tube is inserted into the locking rubber sleeve, the locking nut is screwed down, the test gate is opened, and the piston is pushed to detect. And taking liquid samples for the same reason. The standard sampling detector adopts the split type design of body and quick-operation joint, utilizes the design of tee bend, gate, colour comparison tube plug, and the sample is accurate, colour comparison tube firm in connection.
The device and the method for hermetically sampling and detecting the hydrogen sulfide at the wellhead of the oil well with the patent number of CN108487906A have the advantages that chain type fixing clips are adopted, V positioning is adopted, sawtooth teeth are adopted for skid prevention in a locking part, and the fixed connection between pipelines with different pipe diameters and a separation sampling barrel can be realized; a separation structure is adopted between the piston and the piston rod, so that gas in produced liquid can be fully released; the telescopic universal joint is adopted to connect the pipelines, the two ends of the telescopic universal joint are respectively connected and locked in a swinging mode at 360 degrees, the middle part of the telescopic universal joint can be telescopic, the installation is convenient, the bearing pressure is high, and the safety coefficient is high; the ball screw is adopted to reduce the friction resistance, so that the use by an operator is facilitated; the bottom of separation sampling bucket is equipped with special sampling channel, the oil sample of admission that can be convenient. Meanwhile, the residual oil gas can be safely and stably discharged back to the flow. The device records the instantaneous hydrogen sulfide content in a unit time flow, and the detection data is accurate.
Drawings
FIG. 1 is a schematic structural diagram of a sampling main body mechanism of the multifunctional oil-gas sealed sampling detection device.
FIG. 2 is a schematic diagram of a standard sampling detector of the multifunctional oil-gas sealed sampling detection device.
Fig. 3 is a sectional view a-a of fig. 1.
FIG. 4 is a cross-sectional view of the V-shaped locating block in a top view.
Fig. 5 is a left side view of fig. 4.
FIG. 6 is a schematic view of a connection line structure of the expansion joint.
The labels in the figure are: 1. a plate chain; 2. connecting a pin shaft; 3. a v-shaped locating block; 4. a adapter sleeve; 5. tightening the handle; 6. a gland; 7. a sliding lock block; 8. fixing the locking block; 9. a lock sleeve; 10. tightening the nut; 11. a screw; 12. a connecting rod; 13. a ball screw; 14. an exhaust hole; 14-1, mounting screws; 15. a ball nut; 16. an end cap; 17. a sample port connector; 18. a cylinder body; 19. an angular contact bearing; 20. a baffle ring; 21. a non-metallic sheath; 22. a piston; 23. a lower joint; 24. connecting a tee joint; 24-1, a liquid sampling valve; 25. a first coupling; 26. a first spherical joint; 27. tightly pressing the first gland; 28. a sleeve; 29. a seal ring; 30. locking the nut; 31. a tapered locking ring; 32. a telescopic pipe; 33. a second fixed gland is tightly pressed; 34. a second spherical joint; 35. a coupling II; 36. a second connecting pipe; 37. rotating the elbow 360 degrees; 38. a valve; 39. an oil delivery pipe valve; 40. an oil delivery pipe; 41. a quick coupling; 42. a standard sampling detector; 43. locking the rubber sleeve; 44. a lock nut; 45 testing the gate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1 to 6, the present invention provides a technical solution: the multifunctional oil gas closed sampling detection device comprises a closed press-back mechanism, a pipeline, a positioning mechanism and a standard sampling detector, wherein the closed press-back mechanism, the pipeline and the positioning mechanism form a sampling main body mechanism together, one end of the pipeline is connected with a sampling port of the oil pipeline, the other end of the pipeline is connected with a lateral wall inlet of a tee joint at the lower end of the closed press-back mechanism, the closed press-back mechanism is positioned and fixed on the oil pipeline 40 through the positioning mechanism, the standard sampling detector is connected with the sampling port of the closed press-back mechanism, the positioning mechanism comprises a plate-type chain 1, a connecting pin shaft 2, a V-shaped positioning block 3, a fastening sleeve 4, a fastening handle 5, a gland 6, a sliding locking block 7, a fixed locking block 8, a locking sleeve 9, a fastening nut 10, a screw 11 and a connecting rod 12, a V-shaped groove is formed on the left side surface of the, the V-shaped groove of the V-shaped positioning block is clamped on an oil conveying pipe, the left end of the connecting rod 12 is connected with the middle part of the right side surface of the V-shaped positioning block, the right end of the connecting rod is connected with the closed press-back mechanism, the lock sleeve 9 is provided with a chain through hole which is communicated with the left and the right, and a locking hole which is communicated with the front and the back to form a cross hole channel, the lower end of the locking hole is provided with a fixed locking block 8, the front end surface of the lock sleeve is provided with a gland 6, the center of the gland is provided with a threaded hole, a handle stud is arranged in the threaded hole of the gland, the inner end of the handle stud is connected with a sliding locking block and extends into the locking hole, the outer end of the handle stud is connected with a fastening handle 5, the front end of the plate-type chain 1 passes through the front guide groove of the V-shaped positioning block and then passes through the chain through hole of, the screw rod 11 is simultaneously penetrated and arranged in the center holes of the rear guide groove and the locking sleeve 4 of the V-shaped positioning block, the locking nut 10 is sleeved on the screw rod, the left end of the locking nut is propped against the right end face of the locking sleeve, the left end face of the locking sleeve leans against the right end face of the rear guide groove, and the plate-type chain and the V-shaped positioning block are simultaneously and tightly held on the outer circumferential wall of the oil conveying pipe 40.
The left side surface of the lock sleeve 9 is provided with anti-skid sawteeth, and the right end surface of the front guide groove of the V-shaped positioning block 3 is also provided with corresponding anti-skid sawteeth, namely the anti-skid sawteeth on the left side surface of the lock sleeve are clamped on the anti-skid sawteeth on the right end surface of the front guide groove of the V-shaped positioning block; the left side surface of the adapter sleeve 4 is provided with anti-skid sawteeth, the right end surface of the rear guide groove of the V-shaped positioning block 3 is also provided with corresponding anti-skid sawteeth, namely, the anti-skid sawteeth on the left side surface of the adapter sleeve are clamped on the anti-skid sawteeth on the right end surface of the rear guide groove of the V-shaped positioning block.
The locking mechanism is characterized in that the locking sleeve 9 is provided with a screw hole, a fastening screw is installed in the screw hole, the fixed locking block 8 is fixed through the fastening screw, the gland 6 is fixed on the front side face of the locking sleeve through a screw, the left end of the connecting rod 12 is in threaded connection with a central threaded hole formed in the V-shaped positioning block or is directly welded in the middle of the right side face of the V-shaped positioning block 3, and the right end of the connecting rod 12 is welded with a cylinder body of the closed press-back.
The closed press-back mechanism comprises a cylinder body 18, a piston 22, a ball screw 13, a ball nut 15 and an end cover 16, the piston 22 is arranged in the inner cavity of the cylinder body 18, the upper end surface of the piston is provided with a groove, a non-metal sleeve 21 is embedded in the groove, the cylinder body is provided with an upper port and a lower port, the upper port of the cylinder body is fixed with an end cover 16, a central hole of the end cover is provided with a ball nut 15, the ball screw is matched with the ball nut, the lower end of the ball screw is sleeved with an angular contact bearing 19, the angular contact bearing can extend downwards into the non-metal sleeve, the side wall of the cylinder body is provided with an air intake, the sampling port connector 17 is connected with a standard sampling detector 42 through a quick connector 41 during sampling of the gas sample, the gas with the standard volume is taken out, the colorimetric tube is inserted into a locking rubber sleeve 43, a locking nut 44 is screwed, a testing gate 45 is opened, and a piston of the standard sampling detector 42 is pushed to perform detection of the gas sample. The vertical distance from the air intake to the bottom end of the ball nut is greater than the height of the piston, the lower port of the cylinder body is connected with a lower joint 23, the lower joint is connected with the upper port of a tee 24, and the lower port of the tee is connected with a liquid sampling valve 24-1. In the same manner as the sampling gas detection, the liquid sample can be detected by connecting the liquid sampling valve 24-1 with the standard sampling detector 42 through the quick connector 41. Quick-operation joint can quick sealed butt joint, quick-operation joint, test gate, colour comparison tube plug adopt the three-way type design, the locking gum cover uses with the cooperation of screwing up lock nut, and colour comparison tube convenient connection is firm.
The end cover 16 is in threaded connection with the upper end port of the cylinder body 18, the ball nut is fixed on the end cover through a mounting screw 14-1, the end cover is provided with an exhaust hole 14 which is communicated up and down, and the outer wall of the piston is provided with a sealing ring which is sealed with the inner wall of the cylinder body.
The outer wall of the lower end of the ball screw is clamped with a baffle ring 20, and the baffle ring blocks the lower end face of the angular contact bearing.
The pipeline is a telescopic universal joint connecting pipeline. The telescopic universal joint connecting pipeline comprises a telescopic pipe assembly, a first spherical joint 26 and a second spherical joint 34, the first spherical joint 26 is connected to the right end of the telescopic pipe assembly, the first right end of the first spherical joint is connected with the inlet of the side wall of the tee joint 24 through a first coupling 25, the second spherical joint 34 is connected to the left end of the telescopic pipe assembly, the second left end of the second spherical joint is connected with a right opening of a 360-degree rotating elbow 37 through a second coupling, the right opening of the 360-degree rotating elbow 37 is connected with an oil delivery valve 39 on an oil delivery pipe, and the 360-degree rotating elbow and the oil delivery valve 39 can be connected with a valve 38.
If the first coupling 25 is far away from the tee 24, the first coupling can be connected by installing a first connecting pipe, and if the second coupling 35 is far away from the 360-degree rotating elbow 37, the second coupling can be connected by installing a second connecting pipe 36 in a false mode.
The telescopic pipe assembly comprises a sleeve 28 and a telescopic pipe 32 which are sleeved together, the right end of the sleeve 28 is in threaded connection with a first fastening and pressing cover 27, the right end face of the sleeve 28 is provided with a spherical surface, the first fastening and pressing cover is provided with a central hole, the inner diameter of the central hole of the first fastening and pressing cover is smaller than the diameter of a ball head of the first shape joint 26, and the ball head of the first shape joint extends into the first fastening and pressing cover to be attached to the spherical surface of the right end face of the sleeve; the left end of the extension tube 32 is in threaded connection with a second tightening pressure cover 33, the left end face of the extension tube is provided with a spherical surface, the second tightening pressure cover is provided with a central hole, the inner diameter of the central hole of the second tightening pressure cover is smaller than the diameter of a bulb of the second shape joint 34, and the bulb of the second shape joint extends into the second tightening pressure cover and is attached to the spherical surface of the left end face of the extension tube.
The inner wall of the sleeve is provided with a sealing ring 29 which is sealed with the outer wall of the extension tube, the left end of the sleeve is connected with a locking nut 30 in a thread-buckling mode, and a tapered locking ring 31 is sleeved between the locking nut and the extension tube.
Standard sampling test ware includes detector cylinder body, detector piston, quick-operation joint 41, test gate 45, sample tube, port connection detector cylinder body upper port under the sample tube, and lock nut 44 is connected to sample tube upper port, and lock nut outside suit locking gum cover 43, the radial first hole that the sample tube was seted up is communicate in the quick-operation joint export, the test gate is connected on the radial second hole that sample tube was seted up, lock nut and colour comparison tube plug connection.
II, the working principle is as follows:
firstly, field installation:
(1) equipment fixed connection: the plate type chain 1 is wound around the oil pipeline 40, and the V-shaped groove on the V-shaped positioning block 3 is leaned against the oil pipeline 40; the position of the plate type chain lock sleeve 9 is adjusted, (the lock sleeve 9 is positioned on the V-shaped positioning block 3, and the V-shaped positioning block 3 and the lock sleeve 9 are respectively provided with sawtooth teeth, so that the positioning stability is ensured). The tightening handle 5 is rotated to drive the sliding locking block 7 to move, and the plate-type chain is fixed between the sliding locking block 7 and the fixed locking block 8 (because the sliding locking block 7 and the fixed locking block 8 are respectively provided with a convex end with the same shape as the plate-type chain, the chain cannot slide after being locked).
(2) The fastening nut 10 is rotated to drive the screw 11 to move the plate type chain 1, and the plate type chain is locked on the oil pipeline 40.
(3) Connecting the pipeline, namely butting the valve 38 with an oil pipeline valve 39 by using a screw head, firstly adjusting the 360-degree rotary elbow 37 to a proper installation angle and locking; then the first fastening gland 27 and the second fastening gland 33 are respectively adjusted, the first spherical joint 26 and the second spherical joint 34 at the two ends have the function of 360-degree swing, so that the fastening gland is screwed after the pipeline reaches a proper angle, and meanwhile, the locking nut 30 is loosened, so that the telescopic pipe 32 is locked after sliding in the sleeve 28 to reach a proper length.
(II) testing:
1. firstly, the ball screw 13 is rotated by a spanner to enable the piston 22 to be positioned at the bottommost end of the cylinder body 18, and then the ball screw 13 is screwed out to the topmost end by the spanner (an outer ring of an angular contact bearing 19 arranged at the lower end of the ball screw 13 is in clearance fit with an inner ring of a non-metal sleeve 21, and the non-metal sleeve 21 embedded in the piston 22 can prevent sparks from being generated in collision).
2. The valve 38 and the oil delivery valve 39 are respectively opened, and the oil-gas mixed liquid in the oil delivery pipe 40 enters the cylinder body 18 through the connecting pipeline, and pushes the piston 22 to move upwards to the highest end in the cylinder body 18 under the action of pressure. (air in the upper chamber of the cylinder 18 from the piston 22 is vented through the vent 14). When sampling gas, the standard sampling detector 42 is connected with the quick connector 41 and the sampling port connector 17 to take out gas with standard volume, the colorimetric tube is inserted into the locking rubber sleeve 43, the locking nut 44 is screwed, the testing gate 45 is opened, and the piston is pushed to detect. When an oil sample is taken, the liquid sampling valve 24-1 is opened to discharge crude oil, and when a proper oil sample is taken out or gas is discharged, the liquid sampling valve 24-1 is closed. After sampling detection is finished, the ball screw 13 is rotated by a wrench to enable the piston 22 to be positioned at the bottommost end of the cylinder body 18, and the residual gas and liquid are pressed back to the flow, so that gas and liquid are sealed, sampling residual gas and liquid are pressed back, the device fills the technical blank, and has popularization value.
The device and the method for hermetically sampling and detecting the hydrogen sulfide at the wellhead of the oil well with the patent number of CN108487906A have the advantages that chain type fixing clips are adopted, V positioning is adopted, sawtooth teeth are adopted for skid prevention in a locking part, and the fixed connection between pipelines with different pipe diameters and a separation sampling barrel can be realized; a separation structure is adopted between the piston and the piston rod, so that gas in produced liquid can be fully released; the telescopic universal joint is adopted to connect the pipelines, the two ends of the telescopic universal joint are respectively connected and locked in a swinging mode at 360 degrees, the middle part of the telescopic universal joint can be telescopic, the installation is convenient, the bearing pressure is high, and the safety coefficient is high; the ball screw is adopted to reduce the friction resistance, so that the use by an operator is facilitated; the bottom of separation sampling bucket is equipped with special sampling channel, the oil sample of admission that can be convenient. Meanwhile, the residual oil gas can be safely and stably discharged back to the flow. The device records the instantaneous hydrogen sulfide content in a unit time flow, and the detection data is accurate.
In the description of the present invention, it is to be understood that the positional indications or positional relationships are based on those shown in the drawings and are for the purpose of facilitating the description of the present invention, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A multifunctional oil gas closed sampling detection device comprises a closed press-back mechanism, a pipeline, a positioning mechanism and a standard sampling detector, wherein one end of the pipeline is connected with a sampling port of an oil delivery pipe, the other end of the pipeline is connected with a side wall inlet of a tee joint at the lower end of the closed press-back mechanism, the closed press-back mechanism is positioned and fixed on the oil delivery pipe through the positioning mechanism, and the standard sampling detector is connected with the sampling port of the closed press-back mechanism. The right end of the connecting rod is connected with a closed press-back mechanism, the lock sleeve is provided with a chain through hole which is communicated left and right and a locking hole which is communicated front and back to form a cross hole channel which is communicated with each other, the lower end of the locking hole is provided with a fixed locking block, the front end surface of the lock sleeve is provided with a gland, the center of the gland is provided with a threaded hole, a handle stud is arranged in the threaded hole of the gland, the inner end of the handle stud is connected with a sliding locking block and extends into the locking hole, the outer end of the handle stud is connected with a fastening handle, the front end of the plate type chain passes through the front guide groove of the V-shaped positioning block and then passes through the chain through hole of the lock sleeve, the plate type chain is clamped and fixed between the sliding locking block and the fixed locking block, the left end surface of the lock sleeve is close to the right end surface of the front guide groove, the, the left end of the locking nut is propped against the right end face of the locking sleeve, the left end face of the locking sleeve leans against the right end face of the rear guide groove, and the plate-type chain and the V-shaped positioning block are simultaneously and tightly held on the outer circumferential wall of the oil conveying pipe.
2. The multifunctional oil-gas sealed sampling detection device of claim 1, wherein the left side surface of the lock sleeve is provided with anti-skid sawteeth, and the right end surface of the front guide groove of the V-shaped positioning block is also provided with corresponding anti-skid sawteeth, namely, the anti-skid sawteeth on the left side surface of the lock sleeve are clamped on the anti-skid sawteeth on the right end surface of the front guide groove of the V-shaped positioning block; the left side surface of the adapter sleeve is provided with anti-skid sawteeth, and the right end surface of the rear guide groove of the V-shaped positioning block is also provided with corresponding anti-skid sawteeth, namely, the anti-skid sawteeth on the left side surface of the adapter sleeve are clamped on the anti-skid sawteeth on the right end surface of the rear guide groove of the V-shaped positioning block.
3. The multifunctional oil-gas sealed sampling detection device according to claim 1 or 2, wherein the lock sleeve is provided with a screw hole, a fastening screw is mounted in the screw hole, the fixed lock block is fixed by the fastening screw, the gland is fixed on the front side surface of the lock sleeve by a screw, the left end of the connecting rod is in threaded connection with a central screw hole formed in the V-shaped positioning block or is directly welded in the middle of the right side surface of the V-shaped positioning block, and the right end of the connecting rod is welded with the sealed press-back mechanism.
4. The multifunctional oil and gas closed sampling detection device of claim 1 or 2, the closed press-back mechanism comprises a cylinder body, a piston, a ball screw, a ball nut and an end cover, wherein the piston is arranged in the inner cavity of the cylinder body, the upper end surface of the piston is provided with a groove, a non-metal sleeve is embedded in the groove, the cylinder body is provided with an upper port and a lower port, the upper port of the cylinder body is fixed with an end cover, a central hole of the end cover is provided with a ball nut, the ball screw is matched with the ball nut, the lower end of the ball screw is sleeved with an angular contact bearing, the angular contact bearing can extend downwards into the non-metal sleeve, the side wall of the cylinder body is provided with an air intake port, the air intake port is provided with a sampling port connector, the vertical distance from the air intake port to the bottom end of the ball nut is greater than the height of the piston, the lower port of the cylinder body is connected with a lower joint, the lower joint is connected with an upper port of a tee joint, and the lower port of the tee joint is connected with a liquid sampling valve.
5. The multifunctional oil-gas sealed sampling detection device of claim 4, wherein the end cover is in threaded connection with the upper end port of the cylinder body, the ball nut fixes the end cover through a mounting screw, the end cover is provided with an exhaust hole which is communicated up and down, and the outer wall of the piston is provided with a sealing ring which is sealed with the inner wall of the cylinder body.
6. The multifunctional oil-gas sealed sampling detection device as claimed in claim 4, wherein the outer wall of the lower end of the ball screw is clamped with a retaining ring, and the retaining ring retains the lower end face of the angular contact bearing.
7. The multifunctional oil-gas closed sampling detection device according to claim 1 or 2, characterized in that the pipeline is a telescopic universal joint connecting pipeline, the telescopic universal joint connecting pipeline comprises a telescopic pipe assembly, a first spherical joint and a second spherical joint, the right end of the telescopic pipe assembly is connected with the first spherical joint, the right end of the first spherical joint is connected with the inlet of the lateral wall of the tee joint through the first coupling, the left end of the telescopic pipe assembly is connected with the second spherical joint, the left end of the second spherical joint is connected with the lower right opening of a 360-degree rotary elbow through the second coupling, and the upper right opening of the 360-degree rotary elbow is connected with an oil delivery valve on an oil delivery pipe.
8. The multifunctional oil-gas closed sampling detection device of claim 7, wherein the extension tube assembly comprises a sleeve and an extension tube which are sleeved together, the right end of the sleeve is in threaded connection with a first tightening and pressing cover, the right end face of the sleeve is provided with a spherical surface, the first tightening and pressing cover is provided with a central hole, the inner diameter of the central hole of the first tightening and pressing cover is smaller than the diameter of a ball head of the first shape joint, and the ball head of the first shape joint extends into the first tightening and pressing cover and is attached to the spherical surface of the right end face of the sleeve; the left end of the extension tube is in threaded connection with the second tightening pressure cover, the left end face of the extension tube is provided with a spherical surface, the second tightening pressure cover is provided with a central hole, the inner diameter of the central hole of the second tightening pressure cover is smaller than the diameter of the ball head of the second shape joint, and the ball head of the second shape joint extends into the second tightening pressure cover and is attached to the spherical surface of the left end face of the extension tube.
9. The multifunctional oil-gas closed sampling detection device according to claim 8, characterized in that a sealing ring is mounted on the inner wall of the sleeve and sealed with the outer wall of the telescopic pipe, a locking nut is connected with the left end of the sleeve in a thread-fastening manner, and a tapered locking ring is sleeved between the locking nut and the telescopic pipe.
10. The multifunctional oil-gas sealed sampling detection device according to claim 1, wherein the standard sampling detector comprises a detector cylinder, a detector piston, a quick connector, a test gate and a sample tube, the lower port of the sample tube is connected with the upper port of the detector cylinder, the upper port of the sample tube is connected with a lock nut, a lock rubber sleeve is sleeved outside the lock nut, the outlet of the quick connector is communicated with a radial first hole formed in the sample tube, the test gate is connected with a radial second hole formed in the sample tube, and the lock nut is connected with a colorimetric tube plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041972.8A CN111441768A (en) | 2019-01-16 | 2019-01-16 | Multifunctional oil gas closed sampling detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041972.8A CN111441768A (en) | 2019-01-16 | 2019-01-16 | Multifunctional oil gas closed sampling detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111441768A true CN111441768A (en) | 2020-07-24 |
Family
ID=71650454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910041972.8A Pending CN111441768A (en) | 2019-01-16 | 2019-01-16 | Multifunctional oil gas closed sampling detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111441768A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116929851A (en) * | 2023-08-11 | 2023-10-24 | 富兰克科技(广东)有限公司 | Lubricating oil production sampling device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB763282A (en) * | 1954-05-28 | 1956-12-12 | C & J Hampton Ltd | Improvements in or relating to pipe clamps |
| US4934673A (en) * | 1987-12-10 | 1990-06-19 | General Dynamics Corp., Pomona Division | V-clamp installation tool |
| CN203894078U (en) * | 2014-03-05 | 2014-10-22 | 南通醋酸纤维有限公司 | Sampling cylinder of aeration tank |
| CN208380564U (en) * | 2018-04-19 | 2019-01-15 | 中国石油化工股份有限公司 | Well mouth of oil well Sealed sulphidization hydrogen sampling detecting device |
| CN209654033U (en) * | 2019-01-16 | 2019-11-19 | 中国石油化工股份有限公司 | A kind of novel closed gas-liquid sampler |
-
2019
- 2019-01-16 CN CN201910041972.8A patent/CN111441768A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB763282A (en) * | 1954-05-28 | 1956-12-12 | C & J Hampton Ltd | Improvements in or relating to pipe clamps |
| US4934673A (en) * | 1987-12-10 | 1990-06-19 | General Dynamics Corp., Pomona Division | V-clamp installation tool |
| CN203894078U (en) * | 2014-03-05 | 2014-10-22 | 南通醋酸纤维有限公司 | Sampling cylinder of aeration tank |
| CN208380564U (en) * | 2018-04-19 | 2019-01-15 | 中国石油化工股份有限公司 | Well mouth of oil well Sealed sulphidization hydrogen sampling detecting device |
| CN209654033U (en) * | 2019-01-16 | 2019-11-19 | 中国石油化工股份有限公司 | A kind of novel closed gas-liquid sampler |
Non-Patent Citations (1)
| Title |
|---|
| 张祖兴: "国外水平井技术", vol. 1, 31 July 1992, 中国石油天然气总公司情报研究所, pages: 362 - 366 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116929851A (en) * | 2023-08-11 | 2023-10-24 | 富兰克科技(广东)有限公司 | Lubricating oil production sampling device |
| CN116929851B (en) * | 2023-08-11 | 2024-04-02 | 富兰克科技(广东)有限公司 | Lubricating oil production sampling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4631967A (en) | Automatic insertion device | |
| CN103322373A (en) | Pressured plugging device for stolen hole of oil pipe | |
| CN112683608B (en) | Natural gas sampling device | |
| CN111441768A (en) | Multifunctional oil gas closed sampling detection device | |
| CN209214854U (en) | A kind of underground coal mine SF6 leaks hunting wind multiple spot synchronic gas acquisition device | |
| CN209654033U (en) | A kind of novel closed gas-liquid sampler | |
| CN216284168U (en) | Natural gas long distance pipeline safety pressure testing device | |
| CN202735326U (en) | Mining multi-parameter instrument | |
| CN112557129B (en) | Quick sampling tube for natural gas | |
| CN204330243U (en) | A kind of borehole sealing pick-up unit | |
| CN209539350U (en) | A kind of sealed oil well degassing continuous sampling system | |
| CN212807769U (en) | Leakage-proof smoke sampling gun with fixing mechanism | |
| CN203025002U (en) | Rotating pressure valve type undisturbed soil sampler | |
| CN218295361U (en) | Leakage testing device for air inlet pipe leakage test | |
| CN221006942U (en) | Conveying pipeline convenient for detection and sampling | |
| CN209311470U (en) | One kind being applied to coal seam gas-bearing capacity measurement device | |
| CN108692033A (en) | A kind of control device of well head acquisition oil gas sample | |
| CN217332507U (en) | Portable flow velocity detector for gas pipeline | |
| CN207689190U (en) | Wellhead of water injection well sampler | |
| CN209228362U (en) | Hydrogen sulfide gas sampler | |
| CN211478209U (en) | Auxiliary device for on-site gas detection | |
| CN214149752U (en) | Mining air leakage detection SF6 tracer gas instantaneous release device | |
| SU931116A3 (en) | Valve device for shutting-off degassing pipelines | |
| CN213903473U (en) | Carbon monoxide concentration detector convenient to installation sampling pipe | |
| CN219346244U (en) | Pipeline pressure early warning equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |