CN111322041A - Water distribution device for oil field - Google Patents
Water distribution device for oil field Download PDFInfo
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- CN111322041A CN111322041A CN202010291125.XA CN202010291125A CN111322041A CN 111322041 A CN111322041 A CN 111322041A CN 202010291125 A CN202010291125 A CN 202010291125A CN 111322041 A CN111322041 A CN 111322041A
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- cavity
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- water distributor
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 210000000707 wrist Anatomy 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 210000000078 claw Anatomy 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005065 mining Methods 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 12
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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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)
- Geophysics (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of oil extraction in oil fields, in particular to a water distribution device for an oil field, which comprises a core body and a water distributor, wherein the core body is provided with a first sealing rubber wrist and a second sealing rubber wrist; the first sealing rubber wrist and the second sealing rubber wrist are driven by the linear driving mechanism to expand, and the inner cavity of the water distributor is divided into a first cavity, a second cavity and a third cavity from top to bottom, and the first cavity and the third cavity are communicated through a bridge structure of the water distributor; an upper flow passage and a lower flow passage are arranged in the water distributor, the upper flow passage is positioned in the first cavity, and the lower flow passage is positioned in the second cavity; the lower end of the core body is provided with an internal flow type flowmeter which is communicated with the lower flow passage. When the device works, water is injected into the mining layer through the upper runner, the residual liquid flows bypass the second cavity through the bridge structure of the water distributor and enters the third cavity, and flows into the second cavity from the water outlet of the internal flow type flowmeter and flows into the next stratum through the lower runner, so that double-layer synchronous water injection is realized, and the water injection synchronism and the oil field production efficiency are improved.
Description
Technical Field
The invention relates to the technical field of oil extraction in oil fields, in particular to a water distribution device for an oil field.
Background
The land oil field needs to adopt a water distributor during operation, generally adopts multilayer water injection, and the injection amount of each layer is not large, so that instruments are mostly adopted to enter an internal flow passage of the water distributor for measuring and controlling the water injection amount. When water is injected, the flow channel is small, if a single-layer water injection mode is adopted, a plurality of water distributors and instruments are needed, double-layer simultaneous water injection can be completed, and therefore the water injection process is complex and the production efficiency is low.
Disclosure of Invention
Aiming at the technical problems of complex water injection process and low production efficiency of the existing land oil field, the invention provides the water distribution device for the oil field, which can realize double-layer synchronous water injection and improve the synchronism of water injection and the production efficiency of the oil field.
The invention is realized by the following technical scheme:
a water distribution device for an oil field comprises a core body and a water distributor, wherein the core body is provided with a first sealing rubber wrist and a second sealing rubber wrist; the first sealing rubber wrist and the second sealing rubber wrist are driven by a linear driving mechanism to expand, and an internal cavity of the water distributor is divided into a first cavity, a second cavity and a third cavity from top to bottom, and the first cavity and the third cavity are communicated through a bridge structure of the water distributor; an upper flow passage and a lower flow passage are arranged in the water distributor, the upper flow passage is positioned in the first cavity, and the lower flow passage is positioned in the second cavity; the lower end of the core body is provided with an internal flow type flowmeter which is communicated with the lower flow passage.
When the water distributor is used, the water distributor is firstly put down to the underground through the pipe column, the linear driving mechanisms of the first sealing rubber wrist and the second sealing rubber wrist are driven to start working, the first sealing rubber wrist and the second sealing rubber wrist are expanded, and a main flow passage of the water distributor is sealed and blocked to form a first cavity, a second cavity and a third cavity. When water injection is started, water injection of a current mining layer is achieved through the upper flow channel, meanwhile, residual liquid flow injected from the ground bypasses the second cavity through the bridge structure of the water distributor and enters the third cavity, then the residual liquid flow enters the central flow channel of the internal flow type flowmeter under the action of pressure, then flows into the second cavity from the water outlet of the internal flow type flowmeter and flows into a next stratum through the lower flow channel, and water injection quantity detection of the second stratum are achieved. Therefore, the invention can realize double-layer synchronous water injection and improve the synchronism of water injection and the production efficiency of oil fields.
Furthermore, the upper end of the core body is also provided with an outflow flow meter so as to detect the water flow injected into the water distributor in real time.
Furthermore, an adjustable water nozzle is also arranged in the water distributor and used for adjusting the flow of the upper flow channel; the core body is provided with a mechanical adjusting arm, and the adjustable water nozzle is driven by the mechanical adjusting arm so as to control the water injection amount of the mining layer.
Preferably, the upper end of the water distributor is further provided with a guide structure, and the guide structure is used for guiding and accommodating the mechanical adjusting arm, so that the core body can be conveniently inserted into the water distributor, and the device can be quickly assembled.
Further, a first pressure gauge and a second pressure gauge are arranged on the core body, the first pressure gauge is used for measuring water injection pressure, and the second pressure gauge is used for measuring pressure of the second cavity; the water flow meter also comprises a sealing plug driven by the linear driving mechanism, and the sealing plug is used for controlling the on-off of the water flow of the internal flow type flow meter. The sealing plug hole of the internal flow type flowmeter is closed in a moving mode through the linear driving mechanism to drive the sealing plug head to close the water outlet of the internal flow type flowmeter from the inside, the pressure of the stratum is measured by the second pressure gauge, meanwhile, the pressure of the main runner of the water distributor is directly measured by the first pressure gauge, the injection pressure and the stratum pressure can be obtained simultaneously, and the seal checking is completed.
Further, the upper end of the core body is provided with a centralizer, so that the core body cable can be conveniently installed.
Furthermore, the lower end of the core body is provided with a guide claw.
Furthermore, a guide groove matched with the guide claw is formed in the lower end of the water distributor.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the main runner of the water distributor is sealed and blocked by the expansion of the first sealing rubber wrist and the second sealing rubber wrist to form a first cavity, a second cavity and a third cavity. During water injection, the upper flow channel realizes water injection of the current mining layer, meanwhile, residual liquid flow injected from the ground enters the third cavity through the bridge structure of the water distributor, then flows into the second cavity from the water outlet of the internal flow type flowmeter and flows into the next stratum through the lower flow channel, so that water injection and water injection quantity detection of the second stratum are realized, double-layer synchronous water injection is realized, and the water injection synchronism and the oil field production efficiency are improved.
2. The sealing plug hole of the internal flow type flowmeter is closed by driving the sealing plug head to move through the linear driving mechanism, so that the water outlet of the internal flow type flowmeter is closed from the inside, the pressure of the stratum is measured by the second pressure gauge, the pressure of the main runner of the water distributor is measured by the first pressure gauge, the injection pressure and the stratum pressure can be obtained simultaneously, and the seal checking is completed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural view of the water distributor of the present invention;
FIG. 4 is a structural view of the upper half of the core;
fig. 5 is a structural diagram of the lower half part of the core body.
Reference numbers and corresponding part names in the drawings:
1-core body, 2-water distributor, 3-first sealed rubber wrist, 4-second sealed rubber wrist, 5-first cavity, 6-second cavity, 7-third cavity, 8-upper flow channel, 9-lower flow channel, 10-internal flow type flowmeter, 11-external flow type flowmeter, 12-adjustable water nozzle, 13-mechanical adjusting arm, 14-guiding structure, 15-first pressure gauge, 16-second pressure gauge, 17-sealed plug, 18-centralizer, 19-guiding claw, 20-internal flow type flowmeter water outlet and 21-internal flow type flowmeter water inlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
A water distribution device for an oil field comprises a core body 1 and a water distributor 2. Specifically, the core body 1 is provided with a centralizer 18, an outflow flow type flowmeter 11, a first pressure gauge 15, a second pressure gauge 16, a first sealing wrist 3, a second sealing wrist 4, an inflow flow type flowmeter 10 and a guide claw 19 from top to bottom in sequence. The side wall between the outflow flowmeter 11 and the first sealing rubber wrist 3 is provided with a mechanical adjusting arm 13 through a connecting rod, and the mechanical adjusting arm 13 is provided with a rotary sleeve and a driving motor for driving the rotary sleeve to rotate. The first sealing leather wrist 3 and the second sealing leather wrist 4 are driven by a linear driving mechanism to expand, and a screw rod sliding block mechanism, an electric push rod, a hydraulic/pneumatic cylinder and the like can be adopted for the structure of the linear driving mechanism.
When the water distributor is used, the core body 1 is inserted into an inner cavity (main flow passage) of the water distributor 2, and the inner cavity of the water distributor 2 is divided into a first cavity 5, a second cavity 6 and a third cavity 7 from top to bottom. Specifically, the second cavity 6 is a cavity between the first sealed wrist 3 and the second sealed wrist 4, a water outlet is arranged at the outer side of the second cavity 6, and the first cavity 5 and the third cavity 7 are communicated through a bridge structure of the water distributor 2, that is, the water distributor 2 is a bridge water distributor. In addition, an upper flow passage 8 and a lower flow passage 9 are arranged in the inner cavity of the water distributor 2, and the upper flow passage 8 is positioned in the first cavity 5 so as to introduce the water in the first cavity 5 into the current mining layer; the lower flow channel 9 is located in the second cavity 6 to direct the water in the second cavity 6 into the next layer of the production zone. An inward flow meter 10 at the lower end of the core body 1 communicates with the lower flow passage 9 to introduce the water in the third cavity 7 into the second cavity 6.
Further, an adjustable water nozzle 12 is further arranged in the water distributor 2, the adjustable water nozzle 12 is used for adjusting the flow rate of the upper flow channel 8, and the adjustable water nozzle 12 is driven by a mechanical adjusting arm 13, so that the water injection amount of a mining layer is controlled.
Preferably, the upper end of the water distributor 2 is further provided with a guide structure 14, such as a guide groove and the like. The guide structure 14 serves to guide the mechanical adjustment arm 13 and to accommodate the mechanical adjustment arm 13. The upper end of the core body 1 is also provided with a centralizer 18 so as to facilitate the installation of the core body cable; the lower end of the core body 1 is provided with a guide claw 19, correspondingly, a guide groove matched with the guide claw 19 is formed in the lower end of the water distributor 2, so that the core body 1 is conveniently inserted into a main flow channel of the water distributor 2, and the device is quickly assembled.
It will be understood that said first pressure gauge 15 is located inside the core 1 to detect the water injection pressure into the distributor 2; the second pressure gauge 16 is displaced in the second cavity 6 for measuring the pressure in the second cavity 6. The sealing plug 17 is driven by a linear driving mechanism, and the sealing plug 17 is used for controlling the on-off of the water flow of the inward flow type flowmeter 10, namely, the linear driving mechanism drives the sealing plug 17 to move to close the plug hole of the inward flow type flowmeter 10 so as to close the water outlet 20 of the inward flow type flowmeter from the inside, so that the second pressure gauge 16 measures the pressure of the stratum.
The working principle of the embodiment is as follows:
when the adjustable water injection device is used, the water injection device 2 is firstly put into the well through the pipe column, and water in the upper flow passage 8 of the adjustable water nozzle 12 which is put into the water injection device 2 through a tool is injected into the hole of the current stratum which must pass through the flow passage, so that the flow control function is realized. Then connecting the cable with the core body 1 through the centralizer 18, normally lowering the pipe column into the well, entering the water distributor 2, slightly deeply placing a bit, and then lifting back; wherein the guiding claw 19 and the mechanical adjusting arm 13 play a guiding role and are guided by the guiding structure 12 and the guiding groove of the water distributor 2, and finally, the mechanical adjusting arm 18 grasps the adjusting head of the adjustable water nozzle 12 to complete the positioning.
At the moment, the driving structures of the first sealed rubber wrist 3 and the second sealed rubber wrist 4 start to work, 2 rubber wrists are expanded to seal the main flow channel of the water distributor 2, the main flow channel of the water distributor 2 is blocked to form 3 cavities, the first cavity 5, the second cavity 6 and the third cavity 7 are arranged from top to bottom, water injection control and measurement of the current layer are realized through the upper flow channel 8, and the water outlet 20 of the internal flow type flowmeter and the lower flow channel 9 of the water distributor 2 are both arranged in the second cavity 6.
When the surface injected liquid flow passes through the first cavity 5, the total flow is measured by the outflow flow meter 11 and enters the adjustable water nozzle 3 on the main body of the water distributor 2 through the upper flow passage 8; the flow rate of the injection into the current stratum is regulated by the regulation of the mechanical regulating arm 13 and the data of the outflow flow meter 11. The residual liquid flow injected from the ground bypasses the second cavity 6 through the bridge structure of the water distributor 2 and enters the third cavity 7, and the residual liquid flow enters a central flow channel of the internal flow type flowmeter 10 under the action of the formation pressure to measure the flow rate; the measured liquid flow flows into the second cavity 6 from the water outlet 20 of the internal flow type flowmeter and then flows into the next stratum from the water outlet hole on the side wall of the second cavity 6, so that the flow of the injected second stratum is detected and water is injected.
In addition, the sealing plug 17 closes the plug hole under the driving of the driving mechanism, and blocks the connection between the second cavity 6 and the third cavity 7, so that the pressure of the stratum is measured by the second pressure gauge 16; meanwhile, the first pressure gauge 15 directly measures the pressure of the main runner of the water distributor 2, so that the water injection pressure and the formation pressure can be obtained simultaneously, and the seal checking is completed.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A water distribution device for an oil field comprises a core body (1) and a water distributor (2), and is characterized in that the core body (1) is provided with a first sealing rubber wrist (3) and a second sealing rubber wrist (4);
the first sealed rubber wrist (3) and the second sealed rubber wrist (4) are driven by a linear driving mechanism to expand, and the cavity in the water distributor (2) is divided into a first cavity (5), a second cavity (6) and a third cavity (7) from top to bottom, and the first cavity (5) and the third cavity (7) are communicated through a bridge structure of the water distributor (2);
an upper runner (8) and a lower runner (9) are arranged in the water distributor (2), the upper runner (8) is positioned in the first cavity (5), and the lower runner (9) is positioned in the second cavity (6);
the lower end of the core body (1) is provided with an internal flow type flowmeter (10), and the internal flow type flowmeter (10) is communicated with the lower flow passage (9).
2. Water distribution installation for oil fields according to claim 1, characterized in that the upper end of the core (1) is also provided with an outflow flowmeter (11).
3. Water distribution device for oil fields according to claim 1, characterized in that an adjustable water nozzle (12) is further arranged in the water distributor (2), the adjustable water nozzle (12) is used for adjusting the flow of the upper flow channel (8);
a mechanical adjusting arm (13) is arranged on the core body (1), and the adjustable water nozzle (12) is driven by the mechanical adjusting arm (13).
4. Water distributor for oil fields according to claim 1, characterized in that the upper end of the distributor (2) is further provided with a guide structure (14), said guide structure (14) being intended to guide and house the mechanical adjustment arm (13).
5. Water distribution installation for oil fields according to claim 1, characterized in that a first pressure gauge (15) and a second pressure gauge (16) are provided on the core (1), the first pressure gauge (15) being intended to measure the water injection pressure and the second pressure gauge (16) being intended to measure the pressure in the second cavity (6);
the water flow meter also comprises a sealing plug (17) driven by the linear driving mechanism, wherein the sealing plug (17) is used for controlling the on-off of the water flow of the internal flow type flow meter (10).
6. Water distribution installation for oil fields according to claim 5, wherein the core (1) is provided at its upper end with a centralizer (18).
7. Water distribution installation for oil fields according to claim 6, wherein the core (1) is provided at its lower end with guide claws (19).
8. Water distribution installation for oil fields according to claim 7, wherein the lower end of the distributor (2) is internally provided with a guide groove adapted to the guide pawl (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010291125.XA CN111322041A (en) | 2020-04-14 | 2020-04-14 | Water distribution device for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010291125.XA CN111322041A (en) | 2020-04-14 | 2020-04-14 | Water distribution device for oil field |
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| Publication Number | Publication Date |
|---|---|
| CN111322041A true CN111322041A (en) | 2020-06-23 |
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|---|---|---|---|
| CN202010291125.XA Pending CN111322041A (en) | 2020-04-14 | 2020-04-14 | Water distribution device for oil field |
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