CN212958581U

CN212958581U - Water injection device for oil reservoir exploitation

Info

Publication number: CN212958581U
Application number: CN202021990008.4U
Authority: CN
Inventors: 吴红霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-04-13
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a water injection device for oil reservoir exploitation relates to oil reservoir exploitation technical field. The utility model discloses a sleeve pipe, ground layer, oil pipe and water injection filter mechanism, the sleeve pipe is pegged graft in the ground layer, and the inside of sheathed tube is pegged graft there is oil pipe, and the oil pipe fixing base is installed to oil pipe's upper end, and the water injection filter mechanism is installed to oil pipe fixing base upper end, and the bottom and the oil pipe of water injection filter mechanism are connected, and the water injection pipe is installed on the top of water injection filter mechanism. The utility model discloses a set up water injection filtering mechanism, set up the cartridge filter of thick, well, thin three kinds of different interception precisions in the water injection filtering mechanism, can realize like this the layering interception of oil field extraction water, more refine the interception, can improve the cleanliness of oil field water injection greatly, reduce and block up to the clearance can all be dismantled to three cartridge filter, convenient operation, labour saving and time saving has solved current technique and has blocked dirty effect poor, and the precision is low, and the clearance is inconvenient, the problem of easy jam.

Description

Water injection device for oil reservoir exploitation

Technical Field

The utility model belongs to the technical field of the oil reservoir exploitation, especially, relate to a water injection device for oil reservoir exploitation.

Background

The water injection exploitation refers to that in the process of oil field development, water is injected into an oil reservoir through a special water injection well, the pressure of an oil layer is maintained or recovered, so that the oil reservoir has a strong driving force to improve the exploitation speed and the recovery rate of the oil reservoir, in the process of water injection exploitation, in order to ensure sufficient water quantity and protect the environment, the adopted water source generally uses oil field produced water, but the oil field produced water contains oil stains and some suspended matters, such as siltstone, fine sandstone and the like, and in the process of injecting the oil field produced water into the water injection well through a metal pipeline, a large amount of bacteria are propagated, so that the pore passages of the oil layer are blocked by dirt or sludge, and the pipeline of the oil layer needs to be cleaned before water injection, therefore, the invention patent with the patent number of CN 104129836A discloses a pollution removal and filtration self-cleaning device for oil-water well stratum water injection, which realizes the cleaning of water, the self-cleaning of the device is realized through backwashing, but the sewage discharge pipe arranged on the device is obviously smaller than the water outlet pipe, when the sewage is discharged through backwashing, the sewage discharge pipe is easy to block and is inconvenient to clean the sewage, and the normal use is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water injection device for oil reservoir exploitation, through setting up water injection filtering mechanism, set up the cartridge filter of thick, in, three kinds of different interception precisions in the water injection filtering mechanism, can realize the layering interception to oil field extraction water like this, more refine the interception, can improve the cleanliness of oil field water injection greatly, reduce the jam, and the clearance can all be dismantled to three cartridge filter, and convenient operation, labour saving and time saving has solved current technique and has blocked dirty effect poor, the precision is low, and it is inconvenient to clear up, the problem of easy jam.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a water injection device for oil reservoir exploitation, which comprises a sleeve, a rock-soil layer, an oil pipe and a water injection filtering mechanism, wherein the sleeve is inserted in the rock-soil layer, the oil pipe is inserted in the sleeve, an oil pipe fixing seat is arranged at the upper end of the oil pipe, the water injection filtering mechanism is arranged at the upper end of the oil pipe fixing seat, the bottom end of the water injection filtering mechanism is connected with the oil pipe, a water injection pipe is arranged at the top end of the water injection filtering mechanism, the other end of the water injection pipe is connected with a water injection pool, a water injection valve is arranged on the water injection pipe, the water injection filtering mechanism comprises a filtering pipe body, an upper connecting flange, a lower connecting flange, a first filtering cylinder, a second filtering cylinder and a third filtering cylinder, the upper connecting flange is arranged at the upper end of the filtering pipe body, the lower connecting flange is arranged at, the water injection pipe is characterized in that a hexagon nut is arranged on the fastening bolt, the lower connecting flange is fixedly connected with a connecting flange at the upper end of the oil pipe through the fastening bolt and the hexagon nut, the upper connecting flange is connected with a connecting flange at one end of the water injection pipe through the fastening bolt and the hexagon nut, a first filter cylinder, a second filter cylinder and a third filter cylinder are sequentially installed inside the filtering pipe body from top to bottom, and a water baffle matched with the mouths of the three filter cylinders is arranged on the inner wall of the filtering pipe body.

Further, dislocation mounting is in the both sides of filtering the body about first cartridge filter, second cartridge filter and third cartridge filter to first cartridge filter, second cartridge filter and third cartridge filter all face towards and are the setting of a direction with the horizontal plane contained angle, and the three cartridge filter of arranging like this produces the interference each other when can avoiding dismantling, can make things convenient for personnel to dismantle the clearance to the cartridge filter, makes the setting of three cartridge filter all slope down, can make the effective filtration area of three cartridge filter bigger, makes the filter speed faster, efficiency is higher.

Further, all be provided with waterproof circle between first cartridge filter, second cartridge filter and the third cartridge filter bottom and the filter tube body, first cartridge filter, second cartridge filter and third cartridge filter are thick cartridge filter, well cartridge filter and thin cartridge filter respectively, set up three cartridge filter that increases in proper order by last to lower filter fineness and can realize the stage filtration to oil field extraction water, avoid the filth all to lead to the fact the jam in concentrating on a cartridge filter, can improve filter fineness simultaneously.

Furthermore, all be provided with fixed subassembly between filtering body and the three cartridge filter, fixed subassembly includes long screw and fixation nut, the long screw is installed in the through-hole between filtering body and the three cartridge filter, fixation nut installs the outer tip at the long screw, can make things convenient for personnel to dismantle the installation of clearance and dismantlement back to three cartridge filter through the setting of fixed subassembly for the filth clearance is more convenient.

Furthermore, a packer is arranged in the sleeve and is in sealing connection with the oil pipe, the packer is arranged to enable the oil pipe to be fixed in the sleeve, and stability of the oil pipe in the using process is kept.

Further, oil pipe's bottom is provided with the outlet, the oil reservoir that outlet and ground in situ set up is in same degree of depth position, the plug is installed to oil pipe's bottom, and the oil field produced water that can be convenient for of the setting of outlet oozes into to the oil reservoir, and the setting of plug can avoid the silt in the ground layer to get into in the oil pipe.

The utility model discloses following beneficial effect has:

1. the utility model discloses a setting sets up water injection filtering mechanism, sets up the cartridge filter of thick, well, three kinds of different interception precisions in the water injection filtering mechanism, can realize like this the layering interception of oil field extraction water, more refines the interception, can improve the cleanliness of oil field water injection greatly, reduces to block up, has solved current technique and has blocked dirty not enough to become more meticulous, blocks dirty effect poor, and the filth clearance is inconvenient, causes the jam easily, influences the problem of the normal water injection in oil field.

2. The utility model discloses a set up fixed subassembly, fixed subassembly is together fixed with cartridge filter and filter tube body, when needs clear up the filth in the cartridge filter, only need twist fixed subassembly, alright pull out cartridge filter support and clear up, and the fixed subassembly of rethread is firmly installed after the clearance, has solved the inconvenient problem of current technical filth clearance.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the water injection and filtration mechanism of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 1A according to the present invention;

fig. 4 is an enlarged view of a structure at B in fig. 2 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a sleeve; 2. a rock-soil layer; 3. an oil pipe; 4. an oil pipe fixing seat; 5. a water injection filtering mechanism; 501. a filtering pipe body; 502. an upper connecting flange; 503. a lower connecting flange; 504. a first filter cartridge; 505. a second filter cartridge; 506. a third filter cartridge; 507. a water baffle; 508. fastening a bolt; 509. a hexagonal nut; 6. a water injection pipe; 7. a water injection valve; 8. a waterproof ring; 9. a fixing assembly; 901. a long screw; 902. fixing a nut; 10. a packer; 11. a water drain hole; 12. An oil layer; 13. and (4) plugging the steel wire.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the utility model relates to a water injection device for oil reservoir exploitation, which comprises a sleeve 1, a rock-soil layer 2, an oil pipe 3 and a water injection filter mechanism 5, wherein the sleeve 1 is inserted into the rock-soil layer 2, the oil pipe 3 is inserted into the sleeve 1, an oil pipe fixing seat 4 is installed at the upper end of the oil pipe 3, the water injection filter mechanism 5 is installed at the upper end of the oil pipe fixing seat 4, the bottom end of the water injection filter mechanism 5 is connected with the oil pipe 3, a water injection pipe 6 is installed at the top end of the water injection filter mechanism 5, the other end of the water injection pipe 6 is connected with a water injection pool, a water injection valve 7 is installed on the water injection pipe 6, a packer 10 is arranged in the sleeve 1, the packer 10 is hermetically connected with the oil pipe 3, a water drain hole 11 is arranged at the bottom of the oil pipe 3, the water, the oilfield produced water is injected into the water injection pool, when water injection begins, the oilfield produced water firstly enters the water injection filtering mechanism 5 through the water injection pipe 6 and the water injection valve 7, is filtered by the water injection filtering mechanism 5 and then enters the oil pipe 3, then enters the rock-soil layer 2 through the oil pipe 3, and finally is injected into the oil layer 12 in the rock-soil layer 2 through the water drainage hole 11, so that the pressure of the oil layer 12 is kept or recovered.

Referring to fig. 2-4, the water injection filtering mechanism 5 includes a filtering pipe 501, an upper connecting flange 502, a lower connecting flange 503, a first filtering cylinder 504, a second filtering cylinder 505 and a third filtering cylinder 506, the upper end of the filtering pipe 501 is provided with the upper connecting flange 502, the lower end of the filtering pipe 501 is provided with the lower connecting flange 503, the upper connecting flange 502 and the lower connecting flange 503 are both provided with fastening bolts 508, the fastening bolts 508 are provided with hexagon nuts 509, the lower connecting flange 503 and the connecting flange at the upper end of the oil pipe 3 are fixedly connected through the fastening bolts 508 and the hexagon nuts 509, the upper connecting flange 502 and the connecting flange at one end of the water injection pipe 6 are connected through the fastening bolts 508 and the hexagon nuts 509, the first filtering cylinder 504, the second filtering cylinder 505 and the third filtering cylinder 506 are sequentially installed inside the filtering pipe 501 from top to bottom, the inner wall of the filtering pipe 501 is provided with a water baffle 507 matching with the mouths of, the first filter cartridge 504, the second filter cartridge 505 and the third filter cartridge 506 are installed on two sides of the filter tube body 501 in a left-right staggered manner, the first filter cartridge 504, the second filter cartridge 505 and the third filter cartridge 506 are all arranged in a direction forming an included angle of 60 degrees with a horizontal plane, waterproof rings 8 are arranged between the bottom ends of the first filter cartridge 504, the second filter cartridge 505 and the third filter cartridge 506 and the filter tube body 501, the first filter cartridge 504, the second filter cartridge 505 and the third filter cartridge 506 are respectively a coarse filter cartridge, a medium filter cartridge and a fine filter cartridge, fixing assemblies 9 are arranged between the filter tube body 501 and the three filter cartridges, each fixing assembly 9 comprises a long screw 901 and a fixing nut 902, the long screw 901 is installed in a through hole between the filter tube body 501 and the three filter cartridges, the fixing nut 902 is installed at the outer end of the long screw 901, and when filtering is performed, oilfield produced, carry out coarse filtration to oil field exploitation water through first cartridge filter 504, then get into second cartridge filter 505 and carry out further the fine filter to oil field exploitation water, get into third cartridge filter 506 at last and carry out the most fine filter to oil field exploitation water, when needs clear up impurity in the cartridge filter, only need to twist off fixation nut 902 on the fixed subassembly 9 from long screw 901, can take out corresponding cartridge filter from filtering body 501, clear up.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only the preferred embodiment of the present invention, and the present invention is not limited thereto, any technical solution recorded in the foregoing embodiments is modified, and some technical features are replaced by equivalent, all belonging to the protection scope of the present invention.

Claims

1. The utility model provides a water injection device for oil reservoir exploitation, includes sleeve pipe (1), ground layer (2), oil pipe (3) and water injection filter mechanism (5), its characterized in that: the sleeve pipe (1) is inserted in the rock-soil layer (2), the oil pipe (3) is inserted in the sleeve pipe (1), the oil pipe fixing seat (4) is installed at the upper end of the oil pipe (3), the water injection filtering mechanism (5) is installed at the upper end of the oil pipe fixing seat (4), the bottom end of the water injection filtering mechanism (5) is connected with the oil pipe (3), the water injection pipe (6) is installed at the top end of the water injection filtering mechanism (5), the other end of the water injection pipe (6) is connected with a water injection pool, a water injection valve (7) is installed on the water injection pipe (6), the water injection filtering mechanism (5) comprises a filtering pipe body (501), an upper connecting flange (502), a lower connecting flange (503), a first filtering cylinder (504), a second filtering cylinder (505) and a third filtering cylinder (506), the upper connecting flange (502) is installed at the upper end of, lower flange (503) is installed to the lower extreme of filtering body (501), all install fastening bolt (508) on last flange (502) and lower flange (503), be provided with hexagon nut (509) on fastening bolt (508), flange (503) passes through fastening bolt (508) and hexagon nut (509) fixed connection with the flange of oil pipe (3) upper end down, it passes through fastening bolt (508) and hexagon nut (509) to be connected to go up flange (502) and the flange of water injection pipe (6) one end, first cartridge filter (504), second cartridge filter (505) and third cartridge filter (506) are installed from the top down in proper order to the inside of filtering body (501), be provided with on the inner wall of filtering body (501) with three cartridge filter nozzle assorted breakwater (507).

2. The water injection device for reservoir exploitation according to claim 1, wherein the first filter cartridge (504), the second filter cartridge (505) and the third filter cartridge (506) are installed on two sides of the filter pipe body (501) in a left-right staggered manner, and the first filter cartridge (504), the second filter cartridge (505) and the third filter cartridge (506) are all arranged in a direction forming an angle of 60 degrees with a horizontal plane.

3. The water injection device for reservoir exploitation according to claim 1, wherein a waterproof ring (8) is arranged between the bottom ends of the first filter cartridge (504), the second filter cartridge (505) and the third filter cartridge (506) and the filter pipe body (501), and the first filter cartridge (504), the second filter cartridge (505) and the third filter cartridge (506) are respectively a coarse filter cartridge, a medium filter cartridge and a fine filter cartridge.

4. The water injection device for reservoir exploitation according to claim 1, wherein a fixing assembly (9) is arranged between the filter pipe body (501) and each of the three filter cartridges, the fixing assembly (9) comprises a long screw (901) and a fixing nut (902), the long screw (901) is installed in a through hole between the filter pipe body (501) and each of the three filter cartridges, and the fixing nut (902) is installed at an outer end of the long screw (901).

5. A water injection apparatus for reservoir production as claimed in claim 1, wherein a packer (10) is arranged in the casing (1), the packer (10) being sealingly connected to the tubing (3).

6. The water injection device for oil reservoir exploitation according to claim 1, wherein a drain hole (11) is formed in the bottom of the oil pipe (3), the drain hole (11) is located at the same depth position as an oil layer (12) arranged in the rock-soil layer (2), and a plug (13) is installed at the bottom end of the oil pipe (3).