CN210948618U - Water injection allocation device - Google Patents
Water injection allocation device Download PDFInfo
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- CN210948618U CN210948618U CN201921825319.2U CN201921825319U CN210948618U CN 210948618 U CN210948618 U CN 210948618U CN 201921825319 U CN201921825319 U CN 201921825319U CN 210948618 U CN210948618 U CN 210948618U
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Abstract
The utility model provides a water injection allocation device. Relates to the technical field of oilfield flooding. A plug is arranged in an eccentric hole in the body, a plurality of overflowing holes are formed in a semi-sphere at the bottom of the plug, a main water distribution hole is formed in the eccentric hole of the body, a chamfer is formed in the upper edge of the main water distribution hole, and a steel ball is arranged at the upper part of the main water distribution hole; a plurality of liquid inlet holes are formed between the main water distribution hole and the central hole of the body; the lower joint is connected with a jacket through sealing threads, and the outer diameter of the jacket is provided with a plurality of layered water distribution holes. The utility model prevents the liquid in the stratum carrying polymer lumps and stratum sand from entering the blanking plug, the injection allocation device and the polymer injection pipe column by arranging the one-way valve; the outer layer jacket and the layered water distribution holes are arranged, water discharged from the layered water distribution holes can be injected into the water injection layer section from multiple points on the longitudinal height, the influence of the thickness of the water injection layer section on water injection is eliminated, the water absorption profile of the water injection layer section is prevented from being unbalanced, and the water injection effect is improved; meanwhile, a filter screen is arranged in the liquid inlet hole to intercept impurities in the injected liquid.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil field water injection technique and specifically relates to a water injection allocation device.
Background art:
the oil field generally adopts the layering water injection technology to improve the water injection development effect, namely each water injection layer section usually corresponds single-stage water injection mandrel, and the layering injection allocation is realized by adjusting the opening size of a water nozzle of the water injection mandrel. However, the water injection layer of the offshore oil field is often relatively thick (several tens of meters to hundreds of meters), and the water absorption profile of the water injection layer is easily unbalanced due to the design of a single water outlet hole of the conventional water distributor, so that the water injection effect is influenced;
when the injection pressure suddenly drops in the processes of stopping injection, reducing pressure and washing a separate-layer polymer injection well by using the injection allocation device and the blanking plug, liquid in the stratum can carry polymer lumps and stratum sand to enter the blanking plug, the injection allocation device and the polymer injection pipe column to block the injection allocation tool and the blanking plug, so that the test tool cannot enter the well and a well washing channel is blocked.
The utility model has the following contents:
in order to solve the problem, the utility model provides a water injection allocation device.
The technical scheme of the utility model is that: a water injection allocation device comprises an upper joint, an upper connecting sleeve, a body, a lower connecting sleeve and a lower joint, wherein a blanking plug is arranged in an eccentric hole in the body, the bottom of the blanking plug is in a semi-sphere shape, and a plurality of overflowing holes are formed in the periphery of a central line and communicated with the interior of the blanking plug;
a main water distribution hole is formed in the eccentric body hole at the lower part of the body, a chamfer is formed at the upper edge of the main water distribution hole, a steel ball is arranged in the eccentric body hole at the upper part of the main water distribution hole, and a space below the blanking plug;
a plurality of liquid inlet holes are formed between the main water distribution hole and the central hole of the body;
the lower joint is connected with a jacket through sealing threads, the inner diameter of the jacket is larger than the outer diameter of the body, the jacket extends upwards to the upper connecting sleeve and is connected with the upper connecting sleeve in a sealing mode, and a plurality of layered water distribution holes are formed in the outer diameter of the jacket.
The upper part of the jacket is provided with a guide head which is connected with an upper joint in a threaded manner, a conical shoulder is arranged on the guide head and is connected with the conical shoulder of the upper joint, and the outer diameter of the guide head is the same as that of the jacket.
The lower part of the center hole of the body covers the position of the liquid inlet hole, and a circular filter screen is embedded in the center hole.
The steel ball is made of high-carbon high-speed steel.
The utility model discloses following beneficial effect has: the utility model prevents the liquid in the stratum carrying polymer blocks and stratum sand from entering the blanking plug, the injection allocation device and the injection pipe column to block the injection allocation tool and the packer by arranging the one-way valve formed by matching the steel ball with the main water distribution hole, thereby ensuring that the testing tool is smoothly put in and the well washing channel is smooth; the outer layer jacket is arranged, the outlets of the layered water distribution holes correspond to different points on the longitudinal height of the water injection layer, so that water discharged from the layered water distribution holes can simultaneously inject water into the water injection layer from multiple points on the longitudinal height, compared with the prior art that the water distributor can only inject water into the water injection layer from one point on the longitudinal height, the multiple layered water distribution holes can simultaneously inject water into the water injection layer from multiple points on the longitudinal height, the influence of the thickness of the water injection layer on the water injection is eliminated, the uniform water injection into the water injection layer is realized, the unbalanced water absorption profile of the water injection layer is avoided, and the water injection effect is improved; meanwhile, a filter screen is arranged in the liquid inlet hole to intercept impurities in the injected liquid.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1-an upper connector, 2-a guide head, 3-a jacket, 4-a layered water distribution hole, 5-an upper connecting sleeve, 6-a blanking plug, 7-a steel ball, 8-a main water distribution hole, 9-a liquid inlet hole, 10-a filter screen, 11-a lower connecting sleeve, 12-a lower connector, 13-a body and 14-an overflowing hole.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown in figure 1, the water injection allocation device comprises an upper connector 1, an upper connection 5 sleeve, a body 13, a lower connection sleeve 11 and a lower connector 12, wherein a blanking plug 6 is arranged in an eccentric hole in the body 13, the bottom of the blanking plug 6 is in a semi-spherical shape, so that fishing is facilitated, a plurality of overflowing holes 14 are formed in the semi-spherical surface at the bottom of the blanking plug 6 and communicated with the interior of the blanking plug 6 around a central line, and the overflowing holes 14 are prevented from being blocked when a steel ball 7 abuts against the semi-spherical surface at the lower part of the blanking plug 6;
a main water distribution hole 8 is formed in an eccentric hole of the body at the lower part of the body 13, the main water distribution hole determines the water distribution flow of the whole injection allocation device, a chamfer is formed at the upper edge of the main water distribution hole 8, a steel ball 7 is arranged in the eccentric hole of the body at the upper part of the main water distribution hole 8, a steel ball 7 is arranged in the space below the blanking plug 6, the steel ball 7 and the chamfer of the main water distribution hole 8 form a one-way valve, when the injection pressure is reduced, the formation pressure presses the steel ball 7 to the chamfer of the main water distribution hole 8 to form sealing, and the phenomenon;
a plurality of liquid inlet holes 9 are formed between the main water distribution hole 8 and the central hole of the body 13, and liquid in the central hole of the body 13 enters the blanking plug 6 from the liquid inlet holes 9;
the lower connector 12 is connected with a jacket 3 through sealing threads, the inner diameter of the jacket 3 is larger than the outer diameter of the body 13, the jacket 3 extends upwards to the upper connecting sleeve 5 and is connected with the upper connecting sleeve 5 in a sealing mode, an interlayer space is formed between the inside of the jacket 3 and the body 13, the upper connecting sleeve 5 and the lower connecting sleeve 11, a plurality of layered water distribution holes 4 are formed in the outer diameter of the jacket 3, and liquid entering the interlayer space is uniformly distributed to the layered water distribution holes 4 under certain pressure.
The upper part of the jacket 3 is provided with a guide head 2 which is connected with an upper connector 1 in a threaded manner, a conical shoulder is arranged on the guide head 2 and is connected with the conical shoulder of the upper connector 1, the outer diameter of the guide head 2 is the same as that of the jacket 3, and the guide head 2 is used for being matched with the upper connector 1 to play a role in guiding and protecting the jacket 3.
The lower part of the central hole of the body 13 covers the position of the liquid inlet hole 9, and a circular filter screen 10 is embedded to prevent impurities from entering the blanking plug and the water distribution layer.
The steel ball 7 is made of high-carbon high-speed steel, and the hardness of the steel ball 7 is higher than that of the main water distribution hole 8, so that a sealing effect is better achieved.
The utility model prevents the liquid in the stratum carrying polymer blocks and stratum sand from entering the blanking plug, the injection allocation device and the injection pipe column to block the injection allocation tool and the packer by arranging the one-way valve formed by matching the steel ball with the main water distribution hole, thereby ensuring that the testing tool is smoothly put in and the well washing channel is smooth; the outer layer jacket is arranged, the outlets of the layered water distribution holes correspond to different points on the longitudinal height of the water injection layer, so that water discharged from the layered water distribution holes can simultaneously inject water into the water injection layer from multiple points on the longitudinal height, compared with the prior art that the water distributor can only inject water into the water injection layer from one point on the longitudinal height, the multiple layered water distribution holes can simultaneously inject water into the water injection layer from multiple points on the longitudinal height, the influence of the thickness of the water injection layer on the water injection is eliminated, the uniform water injection into the water injection layer is realized, the unbalanced water absorption profile of the water injection layer is avoided, and the water injection effect is improved; meanwhile, a filter screen is arranged in the liquid inlet hole to intercept impurities in the injected liquid.
Claims (4)
1. The utility model provides a water injection allocation ware, includes top connection (1), goes up adapter sleeve (5), body (13), lower adapter sleeve (11) and lower clutch (12), its characterized in that: a blanking plug (6) is arranged in an eccentric hole in the body (13), the bottom of the blanking plug (6) is semi-spherical, and a plurality of overflowing holes (14) are formed in the periphery of a central line of the semi-spherical bottom of the blanking plug (6) and communicated with the interior of the blanking plug (6);
a main water distribution hole (8) is formed in the eccentric body hole at the lower part of the body (13), a chamfer is formed at the upper edge of the main water distribution hole (8), a steel ball (7) is arranged in the eccentric body hole at the upper part of the main water distribution hole (8) and the space below the blanking plug (6);
a plurality of liquid inlet holes (9) are arranged between the main water distribution hole (8) and the central hole of the body (13);
the lower connector (12) is connected with a jacket (3) in a sealing threaded manner, the inner diameter of the jacket (3) is larger than the outer diameter of the body (13), the jacket (3) extends upwards to the upper connecting sleeve (5) and is connected with the upper connecting sleeve (5) in a sealing manner, and a plurality of layered water distribution holes (4) are formed in the outer diameter of the jacket (3).
2. A water injection dispenser as defined in claim 1, wherein: the upper part of the jacket (3) is provided with a guide head (2) which is connected with the upper connector (1) in a threaded manner, a conical shoulder is arranged on the guide head (2) and is connected with the conical shoulder of the upper connector (1), and the outer diameter of the guide head (2) is the same as that of the jacket (3).
3. A water injection dispenser as defined in claim 1, wherein: the lower part of the central hole of the body (13) covers the position of the liquid inlet hole (9) and is embedded with a circular filter screen (10).
4. A water injection dispenser as defined in claim 1, wherein: the steel ball (7) is made of high-carbon high-speed steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825319.2U CN210948618U (en) | 2019-10-28 | 2019-10-28 | Water injection allocation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825319.2U CN210948618U (en) | 2019-10-28 | 2019-10-28 | Water injection allocation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210948618U true CN210948618U (en) | 2020-07-07 |
Family
ID=71374402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921825319.2U Active CN210948618U (en) | 2019-10-28 | 2019-10-28 | Water injection allocation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210948618U (en) |
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2019
- 2019-10-28 CN CN201921825319.2U patent/CN210948618U/en active Active
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