CN117108277B - Wellhead full liquid sampling device - Google Patents
Wellhead full liquid sampling device Download PDFInfo
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- CN117108277B CN117108277B CN202311364036.3A CN202311364036A CN117108277B CN 117108277 B CN117108277 B CN 117108277B CN 202311364036 A CN202311364036 A CN 202311364036A CN 117108277 B CN117108277 B CN 117108277B
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- 238000005070 sampling Methods 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 title claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 40
- 238000000605 extraction Methods 0.000 claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims 7
- 239000003921 oil Substances 0.000 abstract description 131
- 239000010779 crude oil Substances 0.000 abstract description 23
- 239000003129 oil well Substances 0.000 abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000003208 petroleum Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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
- E21B49/082—Wire-line fluid samplers
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- 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 provides a wellhead full-liquid sampling device, which belongs to the technical field of oil well sampling, and comprises a production pipe; the supercharging assembly is provided with a plurality of groups, each group of supercharging assembly comprises a closed groove, an oil storage groove, an oil inlet, a water pressure groove, an air pressure groove, a differential pressure pushing plate, a sealing plate and a first oblique angle, the oil inlet is formed in the circumferential surface of the oil extraction pipe, the closed groove is formed in the oil extraction pipe and is communicated with the oil inlet, the oil storage groove is formed in the lower inner wall of the closed groove, the water pressure groove is formed in the lower inner wall of the oil storage groove, the air pressure groove is formed in the lower inner wall of the water pressure groove, the differential pressure pushing plate is slidably connected in the water pressure groove, the sealing plate is respectively closed with the oil storage groove when the oil extraction pipes are located at different depths, and crude oil of different depth oil layers can be collected and sampled at one time.
Description
Technical Field
The invention belongs to the technical field of oil well sampling, and particularly relates to a wellhead full-liquid sampling device.
Background
The oil sampling at the wellhead of the pumping well is the most basic operation skill in daily management of the oil well. Physical parameters of oil well produced liquid are obtained through testing and analyzing the sampled oil sample, and basis is provided for dynamic analysis of oil well production and improvement of oil well management measures.
It has been found through searching that in chinese patent with the publication number "CN108316921B" an automatic oil well sampling device is disclosed, said automatic oil well sampling device comprising: the pipe sleeve is a cylindrical barrel with one end open, the open end of the pipe sleeve is provided with a connecting part, the closed end of the pipe sleeve is provided with a first iron core, and the iron core is provided with a winding coil; the movable core is arranged inside the pipe sleeve, the outer wall of the movable core is tightly attached to the inner wall of the pipe sleeve, the movable core can move along the axial direction of the pipe sleeve, a second iron core is arranged on the upper portion of the movable core, a winding coil is arranged on the second iron core, and the second iron core is arranged opposite to the first iron core; the sampling tube is detachably connected with the pipe sleeve through the connecting part; wherein, through controlling the circular telegram current direction of the winding coil of first iron core and second iron core, control first iron core with the second iron core is close to or keep away from.
Said invention can control the current direction of winding coils of first iron core and second iron core, and can make the second iron core be close to first iron core, i.e. the movable core can be lifted upwards, and can extract the petroleum solution into the sampling tube, but in said invention and existent technology only can sample petroleum of one oil layer in one sampling operation, and when it is necessary to detect the petroleum quality of different depths of same oil field, it can need to go deep into oil well for sampling several times so as to reduce the efficiency of oil well sampling.
Disclosure of Invention
The invention aims to provide a wellhead full-liquid sampling device, and aims to solve the problems that in the prior art, only petroleum of one oil layer can be sampled in one sampling operation, and the sampling efficiency of an oil well is reduced because the oil well needs to be sampled in depth for multiple times when the quality of petroleum of different depths of the same oil field needs to be detected.
In order to achieve the above purpose, the present invention provides the following technical solutions:
well head full liquid sampling device includes:
a production pipe;
the supercharging assembly is provided with a plurality of groups, each group of supercharging assembly comprises a closed groove, an oil storage groove, an oil inlet, a water pressure groove, an air pressure groove, a pressure difference push plate, a sealing plate and a first oblique angle, the oil inlet is formed in the circumferential surface of the oil extraction pipe, the closed groove is formed in the oil extraction pipe and is communicated with the oil inlet, the oil storage groove is formed in the lower inner wall of the closed groove, the water pressure groove is formed in the lower inner wall of the oil storage groove, the air pressure groove is formed in the lower inner wall of the water pressure groove, the pressure difference push plate is slidably connected in the water pressure groove, the sealing plate is fixedly connected to the upper end of the pressure difference push plate and is matched with the closed groove, and the first oblique angle is formed at the two side ends of the pressure difference push plate;
the pushing assembly is provided with a plurality of groups, each group of pushing assembly comprises a connecting hole, a pushing groove, a pushing rod, a first pushing rod, a second pushing rod, a spring groove and pushing springs, the first pushing rod, the second pushing rod, the spring groove and the pushing springs are respectively provided with two pushing springs, the connecting holes are formed in one side inner wall of the water pressure groove, the pushing grooves are formed in one side inner wall of the connecting holes, the pushing rods are slidably connected in the connecting holes, one side ends of the pushing rods are contacted with first oblique angles, the two second pushing rods are respectively connected to two side inner walls of the pushing grooves in a rotating mode through rotating shafts, the two spring grooves are respectively formed in one side ends of the two second pushing rods, the two first pushing rods are respectively connected to two side ends of the pushing rods in a rotating mode through rotating shafts and respectively slide in the two spring grooves, and the two pushing springs are respectively fixedly connected to one side inner walls of the two spring grooves and one side ends of the two first pushing rods;
the limiting assembly is provided with a plurality of groups, each group of limiting assembly comprises a connecting groove, a limiting sliding groove, a connecting rod, a limiting inserting block and a limiting inserting groove, the connecting groove is formed in one side end of the differential pressure pushing plate, the limiting sliding groove is formed in one side inner wall of the connecting groove, the connecting rod is fixedly connected to one side end of the first oblique angle and slides in the connecting groove, the limiting inserting groove is formed in one side inner wall of the limiting sliding groove, and the limiting inserting block is fixedly connected to the upper end of the connecting rod and is matched with the limiting inserting groove.
As a preferable scheme of the invention, one side end of the limiting plug block is provided with a second oblique angle.
As a preferable scheme of the invention, one side end of the first push rod is fixedly connected with a limiting ring, and the diameter of the limiting ring is larger than the opening of the side end of the spring groove.
As a preferable scheme of the invention, a plurality of pushing grooves are formed in one side inner wall of each pushing groove, a plurality of pushing plates are fixedly connected to one side end of each pushing rod, and the pushing plates slide in the pushing grooves respectively.
As a preferable scheme of the invention, the side inner walls of the plurality of pressing grooves are respectively provided with a closing groove, the closing grooves are respectively connected with a closing plate in a sliding way, and the side ends of the closing plates are respectively provided with a friction block.
As a preferable scheme of the invention, a plurality of air pressure tanks are internally provided with valve cores.
As a preferable scheme of the invention, the upper side of the oil extraction pipe is provided with an oil extraction base, the upper end of the oil extraction base is rotationally connected with a rotating wheel, the side end of the oil extraction base is fixedly connected with a motor fixing seat, a driving motor is fixedly connected in the motor fixing seat, and the output end of the driving motor is connected with the rotating wheel.
As a preferable scheme of the invention, the circumferential surface of the rotating wheel is fixedly connected with a pull rope, the lower end of the pull rope is fixedly connected with a pulling block, the lower end of the pulling block is provided with a thread groove, the upper end of the oil extraction pipe is fixedly connected with a threaded rod, and the threaded rod is in threaded connection with the thread groove.
As a preferable scheme of the invention, the lower end of the oil extraction base is provided with a third oblique angle.
Compared with the prior art, the invention has the beneficial effects that:
1. through this device, make the adjustment to the atmospheric pressure in the atmospheric pressure groove before the oil recovery and make the stepwise reinforcing of atmospheric pressure in the different atmospheric pressure grooves, after the oil production pipe slowly gets deep into the oil reservoir, the hydraulic pressure extrusion closing plate according to the different degree of depth that the oil production pipe is located is closed the oil storage tank when different degree of depth respectively, makes the oil production pipe can collect the sample to the crude oil of different degree of depth oil reservoirs once only.
2. Through this device, connect the valve core through the pneumatic tank and change pneumatic tank internal pressure, and then the hydraulic pressure that needs when the control closure plate is closed the oil storage tank completely changes every oil storage tank sampling depth.
3. Through this device, after the closure board is closed, the spacing inserted block of catch bar pulling inserts in the spacing slot, and when oil production pipe in-process pressure differential push pedal by spacing inserted block fixed make the closure board unable by the interior atmospheric pressure promotion of pneumatic tank open, operating personnel can press the push plate with spacing inserted block release in the spacing slot release to the fixed restriction of pressure differential push pedal, make the interior crude oil outflow of oil storage tank accomplish the sampling.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a first cross-sectional view of the structure of the present invention;
FIG. 3 is a cross-sectional exploded view of a first construction of the present invention;
FIG. 4 is a second cross-sectional view of the present invention;
FIG. 5 is a second cross-sectional exploded view of the present invention;
FIG. 6 is a third cross-sectional exploded view of the present invention;
FIG. 7 is a fourth cross-sectional exploded view of the present invention;
FIG. 8 is an enlarged view of the invention at A in FIG. 6;
FIG. 9 is an enlarged view of the invention at B in FIG. 6;
FIG. 10 is an enlarged view of FIG. 7 at C in accordance with the present invention;
fig. 11 is a sectional view showing the internal structure of the oil recovery pipe according to the present invention.
In the figure: 1. a production pipe; 2. closing the groove; 3. an oil storage tank; 4. an oil inlet; 5. a water pressure tank; 6. an air pressure tank; 7. a differential pressure push plate; 8. a closing plate; 9. a connection hole; 10. a pushing groove; 11. a push rod; 12. a first push rod; 13. a second push rod; 14. a spring groove; 15. a pushing spring; 16. a limiting ring; 17. a first bevel; 18. a connecting groove; 19. limiting sliding grooves; 20. a connecting rod; 21. limiting plug blocks; 22. a limit slot; 23. pressing the groove; 24. a pressing plate; 25. closing the slot; 26. a closing plate; 27. a friction block; 28. a valve core; 29. oil extraction base; 30. a rotating wheel; 31. a motor fixing seat; 32. a driving motor; 33. a pull rope; 34. pulling the block; 35. a thread groove; 36. a threaded rod; 37. a second bevel; 38. and a third bevel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 11, the present invention provides the following technical solutions:
well head full liquid sampling device includes:
a production pipe 1;
the supercharging assemblies are provided with a plurality of groups, each group of supercharging assemblies comprises a closed groove 2, an oil storage groove 3, an oil inlet 4, a water pressure groove 5, an air pressure groove 6, a differential pressure pushing plate 7, a closed plate 8 and a first oblique angle 17, the oil inlet 4 is formed in the circumferential surface of the oil production pipe 1, the closed groove 2 is formed in the oil production pipe 1 and communicated with the oil inlet 4, the oil storage groove 3 is formed in the lower inner wall of the closed groove 2, the water pressure groove 5 is formed in the lower inner wall of the oil storage groove 3, the air pressure groove 6 is formed in the lower inner wall of the water pressure groove 5, the differential pressure pushing plate 7 is slidably connected in the water pressure groove 5, the closed plate 8 is fixedly connected to the upper end of the differential pressure pushing plate 7 and matched with the closed groove 2, and the first oblique angle 17 is formed at two side ends of the differential pressure pushing plate 7;
the pushing assembly is provided with a plurality of groups, each group of pushing assembly comprises a connecting hole 9, a pushing groove 10, a pushing rod 11, a first pushing rod 12, a second pushing rod 13, a spring groove 14 and a pushing spring 15, the first pushing rod 12, the second pushing rod 13, the spring groove 14 and the pushing spring 15 are respectively provided with two, the connecting hole 9 is formed in one side inner wall of the water pressure groove 5, the pushing groove 10 is formed in one side inner wall of the connecting hole 9, the pushing rod 11 is slidably connected in the connecting hole 9, one side end of the pushing rod 11 is contacted with a first oblique angle 17, the two second pushing rods 13 are respectively connected with two side inner walls of the pushing groove 10 through rotating shafts, the two spring grooves 14 are respectively formed in one side ends of the two second pushing rods 13, the two first pushing rods 12 are respectively connected with two side ends of the pushing rod 11 through rotating shafts and respectively slide in the two spring grooves 14, and the two pushing springs 15 are respectively fixedly connected with one side inner walls of the two spring grooves 14 and one side ends of the two first pushing rods 12;
the limiting assembly is provided with a plurality of groups, each group of limiting assembly comprises a connecting groove 18, a limiting sliding groove 19, a connecting rod 20, a limiting inserting block 21 and a limiting inserting groove 22, the connecting groove 18 is formed in one side end of the differential pressure push plate 7, the limiting sliding groove 19 is formed in one side inner wall of the connecting groove 18, the connecting rod 20 is fixedly connected to one side end of the first oblique angle 17 and slides in the connecting groove 18, the limiting inserting groove 22 is formed in one side inner wall of the limiting sliding groove 19, and the limiting inserting block 21 is fixedly connected to the upper end of the connecting rod 20 and is matched with the limiting inserting groove 22.
In the specific embodiment of the invention, the oil extraction pipe 1 is used for collecting and sampling crude oil in an underground oil layer, a plurality of layers of oil extraction mechanisms are arranged in the oil extraction pipe 1, each layer of oil extraction mechanism is used for sampling crude oil in oil layers with different depths, the oil storage tank 3 in each oil extraction layer is used for storing and collecting the crude oil, the air pressure in the air pressure tank 6 is larger than one atmosphere, the pressure difference push plate 7 slides in the water pressure tank 5 and blocks the air pressure tank 6 to avoid the leakage of high-pressure air in the air pressure tank 6, the air pressure in the air pressure tank 6 pushes the pressure difference push plate 7 to enable the sealing plate 8 to abut against the upper inner wall of the sealing tank 2, the sealing tank 2 and the sealing plate 8 have the same shape, when the sealing plate 8 closes the oil storage tank 3, in particular, in the figure 10 according to the specification, the air pressure in the air pressure tank 6 pushes the pressure difference push plate 7 to enable the sealing plate 8 to abut against the upper inner wall of the sealing tank 2, the first push rod 12 is positioned on the right side of the second push rod 13, the push spring 15 is in a compressed state, the push rod 11 is pushed by the push spring 15 to always push against the bevel edge of the first bevel angle 17, the contact surface of the push rod 11 and the first bevel angle 17 is an inclined surface, so that the push rod 11 is pushed to slide into the push groove 10 when the differential pressure push plate 7 slides downwards, when crude oil is required to be collected for oil layers with different depths, the oil production pipe 1 is put into an oil well and slowly falls down, the oil is poured into the oil storage groove 3 from the oil inlet 4, along with the continuous falling of the oil production pipe 1, the pressure of the oil is also enhanced, the pressure of the air in the air pressure groove 6 and the push spring 15 pushes the push rod 11 against the first bevel angle 17 against the differential pressure push plate 7 and the sealing plate 8, and when the pressure of the upper end of the differential pressure push plate 7 is larger than the sum of the pressure and the thrust in the air pressure groove 6, the pressure difference pushes the differential pressure push plate 7 to slide towards the lower end of the water pressure tank 5 and the air pressure tank 6, and pushes one side of the push rod 11 to push the push rod 11 to slide towards the left end of the push tank 10 through the first oblique angle 17, at this time, the angles between the first push rod 12, the second push rod 13 and the push rod 11 become vertical gradually, the space between the first push rod 12 and the second push rod 13 is continuously reduced, and then the push spring 15 is pushed to further shrink, as the water pressure increases gradually, when the first oblique angle 17 pushes the push rod 11 into the connecting hole 9 completely, at this time, the first push rod 12 slides to the left side of the second push rod 13 in fig. 10 of the specification, the push spring 15 which is pushed to shrink previously carries out rebound pushing push rod 11 to slide leftwards, and pulls the limit assembly to fix the differential pressure push plate 7, the limit plug block 21 and the connecting rod 20 are fixedly arranged in the limit sliding groove 19 and matched with the limit slot 22, when the differential pressure push plate 7 slides downwards to push the push rod 11 to slide back to the left slowly into the connecting hole 9, the limit insert block 21 is also driven to slide to one side of the limit slot 22, when the first push rod 12 slides to the other side of the second push rod 13 and is pushed by the push spring 15 to slide to the other side of the push slot 10, the limit insert block 21 is pulled by the push rod 11 to be inserted into the limit slot 22, thereby completing the fixation of the differential pressure push plate 7, so that the differential pressure push plate 7 cannot move up and down, the sealing plate 8 can firmly seal the oil storage tank 3, at the moment, the sealing plate 8 is completely inserted into the sealing tank 2 and seals the oil storage tank 3 along with the downward movement of the previous differential pressure push plate 7, the crude oil in the oil storage tank 3 cannot flow with the outside after the differential pressure push plate 7 is fixed by the limit component, thereby sealing the stored crude oil in the oil storage tank 3, when the oil extraction pipe 1 is pulled back to a wellhead, the water pressure is reduced, and the differential pressure push plate 7 is blocked by the limiting component and can not move any more, so that the crude oil in the oil storage tank 3 can not flow out of the oil storage tank 3 along with the reduction of the water pressure, and the air pressure in the air pressure tank 6 is regulated before the crude oil flows out of the oil storage tank 3 and passes through the oil extraction, so that the air pressure in the air pressure tank 6 is strengthened stepwise, after the oil extraction pipe 1 slowly penetrates into an oil layer, the oil storage tank 3 is closed according to the water pressure extrusion sealing plate 8 of different depths where the oil extraction pipe 1 is positioned, and the oil extraction pipe 1 can collect and sample the crude oil of the oil layers of different depths at one time.
Referring to fig. 1-11, a second bevel 37 is formed at one side of the limiting plug 21.
In this embodiment: the second bevel angle 37 is arranged on one side of the limit insert block 21, one side of the limit slot 22 is an inclined plane, when the limit insert block 21 is pulled by the push rod 11 to be contacted with the inclined plane inner wall of the limit slot 22, the pull force of the push rod 11 to the limit insert block 21 causes the second bevel angle 37 to squeeze the limit slot 22 to push the differential pressure push plate 7 to slide downwards for a certain distance until the limit insert block 21 is completely inserted into the limit slot 22, and the seal plate 8 is driven to be completely inserted into the seal groove 2 along with the sliding of the differential pressure push plate 7 so as to close the oil storage tank 3.
Referring to fig. 1-11, a limit ring 16 is fixedly connected to one side end of the first push rod 12, and the diameter of the limit ring 16 is larger than the opening of the side end of the spring groove 14.
In this embodiment: the limiting ring 16 is sleeved on the outer surface of one side end of the first push rod 12, the limiting ring 16 is used for limiting the sliding of the first push rod 12, and when the pushing spring 15 pushes the first push rod 12 until the limiting ring 16 clamps the opening of the spring groove 14, the pushing rod 11 does not slide any more, so that the first push rod 12 is prevented from sliding out of the spring groove 14.
Referring to fig. 1-11, a plurality of pushing grooves 23 are formed in an inner wall of one side of each of the plurality of pushing grooves 10, a plurality of pushing plates 24 are fixedly connected to one side end of each of the plurality of pushing rods 11, and the plurality of pushing plates 24 slide in the plurality of pushing grooves 23 respectively.
In this embodiment: when crude oil is not poured into the pressure difference push plate 7, the push plate 24 is pushed by the push spring 15 to abut against the inner wall of one side of the abutting push groove 23, when the push rod 11 is pushed by the push spring 15 to slide towards the other side of the push groove 10, the push plate 24 slides to the other side of the push groove 23, after the oil production pipe 1 is pulled out of a wellhead, an operator can push the push plate 24 from the outer side to drive the push rod 11 to slide back to the original position and push the limiting insert block 21 out of the limiting slot 22 to release the fixing restriction on the pressure difference push plate 7, and the air pressure compressed by the pressure difference push plate 7 in the air pressure groove 6 pushes the pressure difference push plate 7 to move upwards until the sealing plate 8 abuts against the upper inner wall of the sealing groove 2, so that the oil storage groove 3 is opened, and crude oil in the oil storage groove 3 is poured out from the oil inlet 4 to finish sampling.
Referring to fig. 1-11, the side inner walls of the plurality of pressing grooves 23 are provided with closing grooves 25, the inside of the plurality of closing grooves 25 is slidably connected with a closing plate 26, and the side ends of the plurality of closing plates 26 are provided with friction blocks 27.
In this embodiment: the closing plate 26 slides in the closing groove 25 to seal the pressing groove 23, so that the water pressure is prevented from influencing the sliding pressure of the differential pressure push plate 7 from the pressing plate 24, when the sampled oil needs to be taken out, the closing plate 26 is slid upwards, the pressing plate 24 is pressed from the outer side, the push rod 11 is pressed back to the original position to take out the sampled oil, the friction block 27 is arranged on the surface of the closing plate 26, and the friction force is increased through the friction block 27 when crude oil is adhered to the outer side of the oil production pipe 1.
Referring specifically to fig. 1-11, a plurality of pneumatic grooves 6 are each provided with a valve core 28.
In this embodiment: the valve core 28 is arranged in the oil extraction pipe 1 and used for supplementing air and pressurizing the air pressure grooves 6, and the air pressure in the air pressure grooves 6 is adjusted by connecting the air pressure pipe with the valve core 28 so that each sealing plate 8 can be closed to store the original oil when reaching different depths in the oil well.
Referring to fig. 1-11 specifically, an oil extraction base 29 is disposed on an upper side of an oil extraction pipe 1, a rotating wheel 30 is rotatably connected to an upper end of the oil extraction base 29, a motor fixing seat 31 is fixedly connected to a side end of the oil extraction base 29, a driving motor 32 is fixedly connected to the motor fixing seat 31, and an output end of the driving motor 32 is connected to the rotating wheel 30.
In this embodiment: the oil production base 29 is fixed at the wellhead of the oil well, the runner 30 rotates at the upper end of the oil production base 29 through a rotating shaft, the motor fixing seat 31 is fixed at one side of the oil production base 29 and used for supporting the driving motor 32, the output end of the driving motor 32 is connected with the rotating shaft of the runner 30, and the driving motor 32 is started to drive the runner 30 to rotate so that the oil production pipe 1 stretches into the oil well or pulls the oil production pipe 1 back to the wellhead.
Referring to fig. 1-11 specifically, a pull rope 33 is fixedly connected to the circumferential surface of the rotating wheel 30, a pull block 34 is fixedly connected to the lower end of the pull rope 33, a thread groove 35 is formed in the lower end of the pull block 34, a threaded rod 36 is fixedly connected to the upper end of the production pipe 1, and the threaded rod 36 is in threaded connection with the thread groove 35.
In this embodiment: the stay cord 33 is located runner 30 surface and is used for pulling oil production pipe 1, and oil production pipe 1 and stay cord 33 are connected through pulling piece 34 and threaded rod 36, and when needs carry out crude oil sampling, rotatable oil production pipe 1 is screwed threaded rod 36 into thread groove 35 and is accomplished the fixed to oil production pipe 1, then put oil production pipe 1 into the oil well and sample.
Referring specifically to fig. 1-11, a third bevel 38 is provided at the lower end of the oil recovery base 29.
In this embodiment: the third bevel 38 is provided at the lower end of the production base 29 to avoid seizing the lower end of the production base 29 when the production pipe 1 is pulled up.
It should be noted that, the valve core 28 and the driving motor 32 used in the present device are related art, and are not described herein in detail.
The working principle and the using flow of the invention are as follows: when crude oil is required to be collected from oil layers with different depths, the oil production pipe 1 is put into an oil well and slowly falls down, the oil is poured into the oil storage tank 3 from the oil inlet 4, along with the continuous falling of the oil production pipe 1, the hydraulic pressure in the air pressure tank 6 and the pushing force of the pushing rod 11 pushing the first bevel angle 17 are pushed by the pushing spring 15 and the pneumatic pressure in the air pressure tank 6, which are propped against the pressure difference pushing plate 7 and the sealing plate 8, when the hydraulic pressure at the upper end of the pressure difference pushing plate 7 is larger than the sum of the pneumatic pressure and the pushing force in the air pressure tank 6, the hydraulic pressure pushes the pressure difference pushing plate 7 to slide towards the lower end of the water pressure tank 5 and the air pressure tank 6, and one side of the pushing rod 11 is pushed by the first bevel angle 17 to slide towards the left side end of the pushing rod 10, at the moment, the angles between the first pushing rod 12, the second pushing rod 13 and the pushing rod 11 gradually become vertical, the distance between the first pushing rod 12 and the second pushing rod 13 is continuously reduced, and the pushing spring 15 is further contracted, with the gradual increase of the water pressure, when the first oblique angle 17 completely pushes the push rod 11 into the connecting hole 9, at this time, the first push rod 12 slides to the left side of the second push rod 13 in fig. 10 of the specification, the push spring 15 which is extruded and contracted before rebounds to push the push rod 11 to slide leftwards, and pulls the limit insert 21 to insert into the limit slot 22 to fix the differential pressure push plate 7, at this time, the sealing plate 8 is completely inserted into the sealing groove 2 along with the downward movement of the differential pressure push plate 7 before and closes the oil storage groove 3, after the limit component fixes the differential pressure push plate 7, crude oil in the oil storage groove 3 can not circulate with the outside any more, thereby sealing the crude oil stored in the oil storage groove 3, leading the crude oil stored in the oil storage groove 3 to be the crude oil with the depth of the sealing plate 8 when the oil production pipe 1 is closed, the water pressure is reduced when the oil production pipe 1 is pulled back to the wellhead, the differential pressure push plate 7 is clamped by the limiting component and cannot move any more, so that crude oil in the oil storage tank 3 cannot flow out of the oil storage tank 3 along with the reduction of water pressure, the air pressure in the air pressure tank 6 is regulated before oil extraction, so that the air pressure in the air pressure tank 6 is increased stepwise, after the oil extraction pipe 1 slowly penetrates into an oil layer, the oil storage tank 3 is closed when the oil extraction pipe 1 is positioned at different depths according to the water pressure extrusion sealing plates 8 of the different depths, and the oil extraction pipe 1 can collect and sample crude oil of the oil layers at different depths at one time.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that the present invention is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Well head full liquid sampling device, its characterized in that: comprising the following steps:
a production pipe (1);
the pressure boosting assembly is provided with a plurality of groups, each group of pressure boosting assembly comprises a closed groove (2), an oil storage groove (3), an oil inlet (4), a water pressure groove (5), an air pressure groove (6), a differential pressure pushing plate (7), a sealing plate (8) and a first bevel angle (17), the oil inlet (4) is formed in the circumferential surface of the oil extraction pipe (1), the closed groove (2) is formed in the oil extraction pipe (1) and is communicated with the oil inlet (4), the oil storage groove (3) is formed in the lower inner wall of the closed groove (2), the water pressure groove (5) is formed in the lower inner wall of the oil storage groove (3), the air pressure groove (6) is formed in the lower inner wall of the water pressure groove (5), the differential pressure pushing plate (7) is slidably connected in the water pressure groove (5), the sealing plate (8) is fixedly connected to the upper end of the differential pressure pushing plate (7) and is matched with the closed groove (2), and the first bevel angle (17) is formed in the two side ends of the differential pressure pushing plate (7);
the pushing assembly is provided with a plurality of groups, each group of pushing assembly comprises a connecting hole (9), a pushing groove (10), a pushing rod (11), a first pushing rod (12), a second pushing rod (13), a spring groove (14) and a pushing spring (15), the first pushing rod (12), the second pushing rod (13), the spring groove (14) and the pushing spring (15) are respectively provided with two pushing springs, the connecting hole (9) is formed in one side inner wall of the water pressure groove (5), the pushing groove (10) is formed in one side inner wall of the connecting hole (9), the pushing rod (11) is connected in the connecting hole (9) in a sliding mode, one side end of the pushing rod (11) is in contact with a first oblique angle (17), the two second pushing rods (13) are respectively connected to two side inner walls of the pushing groove (10) through rotating shafts, the two spring grooves (14) are respectively formed in one side ends of the two second pushing rods (13), the two first pushing rods (12) are respectively connected to two side inner walls of the two springs (14) through rotating shafts in the two side ends of the pushing rod (11) respectively, and the two first pushing rods are respectively connected to one side inner walls of the two springs (14) respectively;
the limiting assembly is provided with a plurality of groups, each group of limiting assembly comprises a connecting groove (18), a limiting sliding groove (19), a connecting rod (20), a limiting inserting block (21) and a limiting inserting groove (22), the connecting grooves (18) are formed in one side end of the differential pressure pushing plate (7), the limiting sliding grooves (19) are formed in one side inner wall of the connecting grooves (18), the connecting rod (20) is fixedly connected to one side end of the first bevel angle (17) and slides in the connecting grooves (18), the limiting inserting grooves (22) are formed in one side inner wall of the limiting sliding grooves (19), and the limiting inserting blocks (21) are fixedly connected to the upper ends of the connecting rods (20) and are matched with the limiting inserting grooves (22);
and a plurality of valve cores (28) are arranged and are respectively arranged in the air pressure grooves (6).
2. The wellhead fluid sampling device of claim 1, wherein: one side end of the limiting plug block (21) is provided with a second bevel angle (37).
3. The wellhead fluid sampling device of claim 2, wherein: one side end of the first push rod (12) is fixedly connected with a limiting ring (16), and the diameter of the limiting ring (16) is larger than the opening of the side end of the spring groove (14).
4. A wellhead fluid sampling device according to claim 3, characterised in that: a plurality of pushing grooves (23) are formed in the inner wall of one side of each pushing groove (10), a plurality of pushing plates (24) are fixedly connected to one side end of each pushing rod (11), and the pushing plates (24) slide in the pushing grooves (23) respectively.
5. The wellhead fluid sampling device of claim 4, wherein: the side inner walls of the pressing grooves (23) are provided with closing grooves (25), the closing grooves (25) are internally and slidably connected with closing plates (26), and the side ends of the closing plates (26) are provided with friction blocks (27).
6. The wellhead fluid sampling device of claim 5, wherein: the oil extraction base (29) is arranged on the upper side of the oil extraction pipe (1), the rotating wheel (30) is rotatably connected to the upper end of the oil extraction base (29), the motor fixing seat (31) is fixedly connected to the side end of the oil extraction base (29), the driving motor (32) is fixedly connected to the inside of the motor fixing seat (31), and the output end of the driving motor (32) is connected with the rotating wheel (30).
7. The wellhead fluid sampling device of claim 6, wherein: the circumference surface fixedly connected with stay cord (33) of runner (30), the lower extreme fixedly connected with pulling block (34) of stay cord (33), thread groove (35) have been seted up to the lower extreme of pulling block (34), the upper end fixedly connected with threaded rod (36) of production string (1), threaded rod (36) and thread groove (35) threaded connection.
8. The wellhead fluid sampling device of claim 7, wherein: the lower end of the oil extraction base (29) is provided with a third bevel angle (38).
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