CN114183104A - Oil field mechanical control wheel mining device - Google Patents
Oil field mechanical control wheel mining device Download PDFInfo
- Publication number
- CN114183104A CN114183104A CN202111662508.4A CN202111662508A CN114183104A CN 114183104 A CN114183104 A CN 114183104A CN 202111662508 A CN202111662508 A CN 202111662508A CN 114183104 A CN114183104 A CN 114183104A
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- oil extraction
- extraction port
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- oil
- core body
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- 238000005065 mining Methods 0.000 title claims abstract description 24
- 238000000605 extraction Methods 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 238000011084 recovery Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 18
- 230000000903 blocking effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
-
- 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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
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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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides an oil field mechanical control alternate mining device, which comprises: a body and a core; a main channel and a side channel are arranged in the main body; in the height direction, an upper outlet, an upper oil extraction port, a lower inlet and a lower oil extraction port are arranged at intervals in turn; the core body is arranged in the main channel and below the upper outlet in a vertically sliding manner; the core body comprises an upper plugging part, a middle conduction part and a lower plugging part; the lower inlet is arranged in the stroke range of the middle conduction part, the outer diameter of the middle conduction part is smaller than the aperture of the main channel, and the middle conduction part is used for guiding oil flowing in from the upper oil extraction port or the lower oil extraction port into the side channel; and the oil liquid entering the side channel flows back to the main channel from the upper outlet and flows to the ground through the main channel. The invention has simple structure, convenient use, safety and reliability, and can quickly realize the change and the extraction between two oil layers.
Description
Technical Field
The invention relates to the technical field of oil extraction in oil fields, in particular to an oil field mechanical control wheel extraction device.
Background
The oil well is produced by layering, the capacity condition of the separated layer position is independently known, and the method has very important significance for determining a reasonable exploitation mode and improving the final capacity of the oil well.
Currently, three of the following are stratified production switches: a mechanical type wheel mining switch controlled by a sucker rod; a hydraulic mining wheel switch controlled by the pressure of the ground pump truck and an electric control type mining wheel switch controlled by a cable or an electric signal. The first two wheel switches generally adopt a design structure that a reversing track tube is reset by spring force, layer changing is realized in a long-short groove type mode, layers are easy to disorder due to the influence of the pressure of a closed ground layer, and the reliability is poor; the electric control type structure has the problems of good reliability, complex construction and high input cost.
Disclosure of Invention
The invention aims to provide an oil field mechanical control wheel mining device to solve at least one technical problem in the prior art.
In order to solve the technical problem, the invention provides an oil field mechanical control wheel mining device, which comprises: a body and a core;
a main channel and a side channel are arranged in the main body;
the upper end and the lower end of the side channel are respectively provided with an upper outlet and a lower inlet which are communicated with the main channel;
the main body is also provided with an upper oil extraction port and a lower oil extraction port which are connected with the inside of the main channel and the outside of the main body;
in the height direction, the upper outlet, the upper oil extraction port, the lower inlet and the lower oil extraction port are arranged at intervals in sequence;
the core body is arranged in the main channel and below the upper outlet in a vertically sliding manner;
the core body comprises an upper plugging part, a middle conduction part and a lower plugging part;
the upper plugging part is used for plugging the upper oil extraction port, the lower plugging part is used for plugging the lower oil extraction port, and the core body is used for plugging the upper oil extraction port or the lower oil extraction port;
the lower inlet is arranged in the stroke range of the middle conduction part (in other words, the lower inlet is arranged corresponding to the middle conduction part), and the outer diameter of the middle conduction part is smaller than the aperture of the main channel and is used for guiding the oil flowing from the upper oil extraction port or the lower oil extraction port into the side channel;
and the oil liquid entering the side channel flows back to the main channel from the upper outlet and flows to the ground through the main channel.
Further, still include down the oil recovery passageway in the main part, the vertical setting of oil recovery passageway down, the both ends of oil recovery passageway down include the upper end oil recovery mouth and lower extreme entry down for communicate the below oil reservoir.
Further, still include the oil recovery passageway in the main part, go up the vertical setting of oil recovery passageway, the both ends of going up the oil recovery passageway include the lower extreme go up oil recovery mouth and upper end entry for communicate top oil reservoir.
Further, the main channel includes a guide seal segment within which the core is slidably disposed; the guide sealing section is arranged below the upper outlet; the upper oil extraction port, the lower inlet and the lower oil extraction port are arranged on the guide sealing section.
The upper plugging portion and the lower plugging portion are in dynamic sealing connection with the guide sealing section.
Further, a dynamic sealing structure, such as a sealing ring, is arranged between the upper blocking part and/or the lower blocking part and the main channel.
Furthermore, the upper end and the lower end of the guide sealing section are provided with limit tables for limiting the upper stroke and the lower stroke of the core body.
Furthermore, the main channel is of a blind hole structure with the lower end plugged.
The main passage adopts the blind hole structure, avoids the interior fluid pressure of oil reservoir to act on from the below on the core, leads to reciprocating the core difficulty.
Furthermore, a through hole penetrating up and down is formed in the middle of the core body.
The lower end of the main channel is sealed, the main channel forms a cavity below the core body, and the cavity is an unsealed cavity by arranging a through hole which penetrates through the core body up and down, so that the core body slides up and down more smoothly, and damping force of the cavity (such as generated in the process of closing the cavity) is eliminated.
Furthermore, an upper temporary positioning structure is arranged between the main body and the core body and used for temporarily locking the core body when the upper oil extraction port is blocked by the upper blocking part;
and/or a lower temporary positioning structure is arranged between the main body and the core body and used for temporarily locking the core body when the lower plugging part plugs the lower oil extraction port.
Further, the temporary positioning structure comprises a ring-shaped clamping groove arranged on the side wall of the core body or the main body main channel, and an elastic locking ring arranged on the side wall of the main body main channel or on the core body.
The locking ring is a C-ring structure and made of elastic metal materials, and is clamped into the annular clamping groove under the action of the elasticity of the locking ring, so that the positioning and temporary locking of the core body are realized; the core body is pushed and pulled by external force, the elasticity of the locking ring is overcome, and the locking ring is withdrawn from the annular clamping groove, so that the locking state of the core body is released.
Further, the packer is connected to the lower portion of the main body through threads (directly connected or indirectly connected), and in the height direction, the packer is arranged between the upper oil extraction port and the lower oil extraction port.
Further, the device also comprises a shifter used for lifting up or pressing down the core body.
Furthermore, a valve seat is arranged on the side channel, and a valve ball is arranged on the valve seat.
By adopting the technical scheme, the invention has the following beneficial effects:
the oil field mechanical control wheel mining device provided by the invention is simple in structure, convenient to use, capable of quickly realizing the replacement and mining between two oil layers, and safe and reliable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an oil field mechanical control wheel mining device provided by an embodiment of the invention when an upper oil layer is mined in a wheel mode;
FIG. 2 is a schematic structural diagram of the oil field mechanical control wheel mining device shown in FIG. 1 for wheel mining of a lower oil layer;
fig. 3 is a structural schematic diagram of the oil field mechanical control wheel mining device when the wheel is provided with a split body.
Reference numerals:
1-upper oil layer; 2-lower oil layer; 10-a body; 11-a main channel; 11 a-a guide seal section; 11 b-a cavity; 11 c-an upper ring-shaped slot; 11 d-lower annular clamping groove; 12-side channel; 12 a-an upper outlet; 12 b-a lower inlet; 13-upper oil extraction port; 14-a lower oil extraction port; 15-lower production channel; 15 a-lower end inlet; 20-a core; 21-an upper plugging portion; 22-an intermediate conduction part; 23-a lower occlusion part; 24-a via hole; 30-splitting; a 40-locking ring; 50-a packer; 60-Versailles; 61-Versailles.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to specific embodiments.
As shown in fig. 1-2, the present embodiment provides an oilfield mechanical control mining device, including: a body 10 and a core 20; a main channel 11 and a side channel 12 are arranged in the main body 10; the upper end and the lower end of the side channel 12 are respectively provided with an upper outlet 12a and a lower inlet 12b which are communicated with the main channel 11; and the main body 10 is also provided with an upper oil extraction port 13 and a lower oil extraction port 14 which are connected with the inside of the main channel 11 and the outside of the main body 10; in the height direction, the upper outlet 12a, the upper oil extraction port 13, the lower inlet 12b and the lower oil extraction port 14 are arranged at intervals in sequence.
The core 20 is slidably disposed up and down in the main passage 11 and below the upper outlet 12 a; the core body 20 includes an upper blocking portion 21, an intermediate conduction portion 22, and a lower blocking portion 23; the upper plugging portion 21 is used for plugging the upper oil extraction port 13, the lower plugging portion 23 is used for plugging the lower oil extraction port 14, and the core 20 is necessary to plug the upper oil extraction port 13 or the lower oil extraction port 14 one by one, namely, the core 20 plugs the upper oil extraction port 13 or the lower oil extraction port 14, so that the situation that the upper oil extraction port 13 and the lower oil extraction port 14 are simultaneously communicated for oil supply is at least avoided.
The lower inlet 12b is provided within a stroke range of the intermediate conduction portion 22, in other words, the lower inlet 12b is provided corresponding to the intermediate conduction portion 22, and an outer diameter of the intermediate conduction portion 22 is smaller than a bore diameter of the main passage 11.
When the core 20 blocks the upper oil extraction port 13, the lower oil extraction port 14 and the lower inlet 12b are arranged corresponding to the middle conduction part 22 at the same time, the lower oil extraction port 14 is communicated with the side channel 12 through the middle conduction part 22, oil flowing from the lower oil extraction port 14 is guided into the side channel 12, enters the oil in the side channel 12, flows back to the main channel 11 from the upper outlet 12a, and flows to the ground through the main channel 11.
When the core 20 blocks the lower oil extraction port 14, the upper oil extraction port 13 and the lower inlet 12b are arranged corresponding to the middle conduction part 22 at the same time, the upper oil extraction port 13 is communicated with the side channel 12 through the middle conduction part 22, oil flowing from the upper oil extraction port 13 is guided into the side channel 12, enters the oil in the side channel 12, flows back to the main channel 11 from the upper outlet 12a, and flows to the ground through the main channel 11.
Preferably, the main body 10 further includes a lower oil recovery channel 15 therein, the lower oil recovery channel 15 is vertically disposed, and two ends of the lower oil recovery channel 15 include the lower oil recovery port 14 and the lower inlet 15a at the upper end, which are used for communicating with the oil reservoir 2 below. Similarly, the main body 10 further includes an upper oil recovery passage (not shown), the upper oil recovery passage is vertically disposed, and two ends of the upper oil recovery passage include the lower oil recovery port 13 and the upper inlet for communicating with the upper oil layer 1.
More preferably, as shown in fig. 3, a split 30 is detachably disposed below the main body 10, the split 30 may extend downward as a detachable part of the main body 10 or an independent device, a part of the lower oil recovery passage 15 is disposed in the split 30, so as to be suitable for oil layers with different separation distances, when the distance between two adjacent oil layers is large, the split 30 may be added to realize that the upper oil recovery port 13 is communicated with the upper oil layer 1 directly or through the upper oil recovery passage, and the lower oil recovery port 14 is communicated with the lower oil layer 2 sequentially through the lower oil recovery passage 15 in the main body 10 and the split 30.
By arranging the detachable split body 30 and the lower oil extraction channel 15, the main body 10 is miniaturized, so that the processing is more convenient, and the precision is higher. Otherwise, the main body 10 is difficult to meet the actual construction requirements and is difficult to popularize and apply due to the large processing difficulty, complex process and high cost of the long rod type part.
The main channel 11 comprises a guide sealing section 11a, the hole diameter of the guide sealing section 11a is larger relative to the upper and lower parts of the main channel 11, and the core body 20 is slidably arranged in the guide sealing section 11 a; the guide sealing section 11a is arranged below the upper outlet 12 a; the upper production port 13, the lower inlet 12b and the lower production port 14 are disposed on the guide seal section 11 a. The upper end surface and the lower end surface of the guide sealing section 11a form a limit table for limiting the up-down stroke of the core body 20.
The inner side surface of the guide sealing section 11a needs finish machining, and the precision is higher, so that the upper plugging part 21 and the lower plugging part 23 are in dynamic sealing connection with the guide sealing section 11 a.
More preferably, the main channel 11 is a blind hole structure with a lower end blocked. Main passage 11 adopts the blind hole structure, avoids the interior fluid pressure of oil reservoir to act on from the below on the core 20, leads to reciprocating core 20 difficulty. The core 20 has a through hole 24 formed in the middle thereof. The lower end of the main channel 11 is blocked, the main channel 11 forms a cavity 11b below the core body 20, and the through hole 24 penetrating through the core body 20 up and down is arranged on the core body, so that the cavity 11b becomes a non-closed cavity, the core body 20 is smoother when sliding up and down, and damping force of the cavity 11b (generated when the cavity is closed) is eliminated.
Further, an upper temporary positioning structure is arranged between the main body 10 and the core body 20, and is used for temporarily locking the core body 20 when the upper blocking part 21 blocks the upper oil recovery port 13; a lower temporary positioning structure is arranged between the main body 10 and the core body 20 and used for temporarily locking the core body 20 when the lower plugging portion 23 plugs the lower oil extraction port 14.
Specifically to the present embodiment, the temporary positioning structure includes an upper annular locking groove 11c and a lower annular locking groove 11d provided on the side wall of the main passage 11 of the body 10, and an elastic locking ring 40 provided on the core 20. The locking ring 40 is a C-ring structure and made of elastic metal materials, and the locking ring 40 is clamped into the upper ring-shaped clamping groove 11C and the lower ring-shaped clamping groove 11d under the action of self elasticity, so that the positioning and temporary locking of the core body 20 are realized; the core body 20 is pushed and pulled by an external force, the locking ring 40 is withdrawn from the upper ring-shaped locking groove 11c and the lower ring-shaped locking groove 11d against the elastic force of the locking ring 40, and thus the locked state of the core body 20 is released.
Further, a packer 50 is included, and the packer 50 is screwed in the middle or lower part of the body 10, and the packer 50 is disposed between the upper production port 13 and the lower production port 14 in the height direction for dividing two oil layers. And, a shifter for lifting or pressing down the core 20 may be further included.
And a valve seat 61 is arranged on the side channel 12, and a valve ball 60 is arranged on the valve seat 61 and used for preventing oil from flowing backwards from top to bottom.
The oil field mechanical control wheel mining device provided by the invention is simple in structure, convenient to use, capable of quickly realizing the replacement and mining between two oil layers, and safe and reliable.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An oil field mechanical control wheel mining device, characterized by, includes: a body and a core;
a main channel and a side channel are arranged in the main body;
the upper end and the lower end of the side channel are respectively provided with an upper outlet and a lower inlet which are communicated with the main channel;
the main body is also provided with an upper oil extraction port and a lower oil extraction port which are communicated with the inside of the main channel and the outside of the main body;
in the height direction, the upper outlet, the upper oil extraction port, the lower inlet and the lower oil extraction port are arranged at intervals in sequence;
the core body is arranged in the main channel and below the upper outlet in a vertically sliding manner;
the core body comprises an upper plugging part, a middle conduction part and a lower plugging part;
the upper plugging part is used for plugging the upper oil extraction port, the lower plugging part is used for plugging the lower oil extraction port, and the core body is used for plugging the upper oil extraction port or the lower oil extraction port;
the lower inlet is arranged in the stroke range of the middle conduction part, the outer diameter of the middle conduction part is smaller than the aperture of the main channel, and the middle conduction part is used for guiding oil flowing in from the upper oil extraction port or the lower oil extraction port into the side channel;
and the oil liquid entering the side channel flows back to the main channel from the upper outlet and flows to the ground through the main channel.
2. The oilfield mechanical control wheel well assembly of claim 1, further comprising a lower oil recovery channel within the body, the lower oil recovery channel being vertically disposed, the two ends of the lower oil recovery channel including the lower oil recovery port at the upper end and the lower inlet port at the lower end for communicating with an oil reservoir below.
3. The oil field mechanical control wheel extraction device as claimed in claim 1, wherein the main body further comprises an upper oil extraction channel, the upper oil extraction channel is vertically arranged, and two ends of the upper oil extraction channel comprise the upper oil extraction port at the lower end and an inlet at the upper end for communicating with an upper oil layer.
4. The oilfield mechanical control wheel mining device of claim 1, wherein the primary channel comprises a guide seal section, the core being slidably disposed within the guide seal section; the guide sealing section is arranged below the upper outlet; the upper oil extraction port, the lower inlet and the lower oil extraction port are arranged on the guide sealing section.
5. The oilfield mechanical control wheel mining device of claim 4, wherein the upper end and the lower end of the guide sealing section are provided with limit tables for limiting the up-down stroke of the core body.
6. The oilfield mechanical control wheel mining device of claim 1, wherein the main channel is a blind hole structure with a lower end plugged.
7. The oilfield mechanical control wheel mining device of claim 6, wherein the core body is provided with a through hole in the middle thereof, and the through hole penetrates through the core body from top to bottom.
8. The oilfield mechanical control wheel mining device of claim 1, wherein an upper temporary positioning structure is arranged between the main body and the core body and used for temporarily locking the core body when the upper plugging portion plugs the upper oil extraction port;
and/or a lower temporary positioning structure is arranged between the main body and the core body and used for temporarily locking the core body when the lower plugging part plugs the lower oil extraction port.
9. The oilfield mechanical control wheel mining device of claim 8, wherein the temporary positioning structure comprises an annular locking groove disposed on the core body or a side wall of the main body main passage, and an elastic locking ring disposed on the side wall of the main body main passage or on the core body.
10. The oilfield mechanical control wheel extraction device of claim 1, further comprising a packer threadably connected to the lower portion of the body, the packer being disposed between the upper oil extraction port and the lower oil extraction port in the height direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111662508.4A CN114183104A (en) | 2021-12-30 | 2021-12-30 | Oil field mechanical control wheel mining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111662508.4A CN114183104A (en) | 2021-12-30 | 2021-12-30 | Oil field mechanical control wheel mining device |
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| Publication Number | Publication Date |
|---|---|
| CN114183104A true CN114183104A (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111662508.4A Pending CN114183104A (en) | 2021-12-30 | 2021-12-30 | Oil field mechanical control wheel mining device |
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| CN (1) | CN114183104A (en) |
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