CN111677480B - Double-acting control valve for casing patching - Google Patents
Double-acting control valve for casing patching Download PDFInfo
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- CN111677480B CN111677480B CN202010501415.2A CN202010501415A CN111677480B CN 111677480 B CN111677480 B CN 111677480B CN 202010501415 A CN202010501415 A CN 202010501415A CN 111677480 B CN111677480 B CN 111677480B
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- sliding sleeve
- pin
- channel
- holes
- uniformly formed
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention relates to the technical field of oil extraction engineering, and belongs to a double-acting control valve for casing patching. The invention solves the problem that the expansion pipe patching and the chemical patching can not be simultaneously realized on a damaged section of a sleeve in the prior art, and the expansion pipe patching and chemical patching device consists of an upper joint (1), a central pipe (2), an upper shearing pin (3), a sealing ring (4), a ball throwing sliding sleeve (5), a lower shearing pin (6) and a pressure sliding sleeve (7); the invention has the advantages of simple structure, simple and convenient process, low cost, high construction efficiency and the like.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering, and belongs to a double-acting control valve for casing patching.
Background
At present, after the casing damage well is repaired, the casing damage section is sealed and reinforced by adopting a mechanical patching mode or a chemical patching mode respectively, and the mechanical patching and the chemical patching can not be simultaneously realized on the casing damage section by one-time tubular column.
Disclosure of Invention
The invention aims to provide a double-acting control valve for casing patching, which can realize mechanical patching and chemical patching simultaneously by one time of a tubular column.
The invention is realized by the following technical scheme: the device consists of an upper joint, a central pipe, an upper shearing pin, a sealing ring, a ball injection sliding sleeve, a lower shearing pin and a pressure sliding sleeve; the upper joint is in threaded connection with the central pipe, the pitching sliding sleeve is fixed in the central pipe through an upper shearing pin, the pressure sliding sleeve is fixed in the central pipe through a lower shearing pin, and the sealing ring is arranged in outer annular grooves of the central pipe, the pitching sliding sleeve and the pressure sliding sleeve.
The central tube is axially drilled with two circular channels, namely an upper channel and a lower channel.
Four rectangular side channels are uniformly arranged outside the upper channel and the lower channel of the central tube.
Four pin through holes are uniformly formed in the upper part of the central tube in the radial direction; four pin through holes are uniformly formed in the middle part in the radial direction; four liquid outlet through holes are uniformly formed in the middle part in the radial direction; four liquid discharge holes are uniformly formed in the radial direction of the lower part.
Four pressure guide holes are uniformly formed in the upper part of the central tube in the radial direction, so that the upper channel is communicated with the side channels respectively; four pressure guide holes are uniformly formed in the middle of the upper channel in the radial direction, so that the upper channel is communicated with the side channels respectively; four pressure guide holes are uniformly formed in the lower part of the lower channel, so that the lower channel is communicated with the side channels respectively.
The number of the upper shearing pins is four, and the upper shearing pins are respectively arranged in the four pin through holes at the upper part of the central tube and are used for fixing the pitching sliding sleeve.
The number of the lower shearing pins is four, and the lower shearing pins are respectively arranged in the four pin through holes in the middle of the central tube and are used for fixing the pressure sliding sleeve.
Compared with the prior art, the invention has the following advantages:
the invention has reasonable, simple and reliable structure, innovatively adopts the principle of double-acting switching control, realizes the purpose of simultaneously meeting the construction of mechanical patch and chemical patch, and improves the safety and the reliability of construction. Meanwhile, the invention has excellent pressure-bearing performance and can completely meet the application environment of oil-water wells.
Description of the drawings: FIG. 1 is a schematic view of the present invention; FIG. 2 isbase:Sub>A sectional view of an upper pressure guide hole A-A of the center tube 2; FIG. 3 is a cross-sectional view B-B of the central tube 2 at the center of the pin through hole; FIG. 4 is a C-C sectional view of a liquid outlet through hole in the middle of the central tube 2; FIG. 5 is a cross-sectional view of the lower drain hole D-D of the center tube 2; FIG. 6 is a sectional view of a pressure guide hole E-E in the middle of the center tube 2; fig. 7 is a sectional view of the lower pressure guide hole F-F of the center tube 2.
In the figure, 1-an upper joint, 2-a central pipe, 3-an upper shearing pin, 4-a sealing ring, 5-a ball throwing sliding sleeve, 6-a lower shearing pin and 7-a pressure sliding sleeve.
The specific implementation mode is as follows: the invention is described in further detail below with reference to the accompanying drawings: the device consists of an upper joint 1, a central pipe 2, an upper shearing pin 3, a sealing ring 4, a pitching sliding sleeve 5, a lower shearing pin 6 and a pressure sliding sleeve 7; wherein, top connection 1 and 2 threaded connection of center tubes, the sliding sleeve 5 of pitching is fixed in center tubes 2 through cutting the pin 3 from top, and pressure sliding sleeve 8 is fixed in center tubes 2 through cutting the pin from bottom.
The central tube 2 is axially drilled with two circular channels, an upper channel 8 and a lower channel 9.
The upper channel 8 and the lower channel 9 of the central tube 2 are evenly provided with four rectangular side channels 10.
Four pin through holes are uniformly formed in the upper part of the central tube 2 in the radial direction; four pin through holes are uniformly formed in the middle part in the radial direction; four liquid outlet through holes are uniformly formed in the middle part in the radial direction; four liquid discharge holes are uniformly formed in the radial direction of the lower part.
Four pressure guide holes are uniformly formed in the upper part of the central tube 2 in the radial direction, so that the upper channel is respectively communicated with the side channels 10; four pressure guide holes are uniformly formed in the middle of the upper channel in the radial direction, so that the upper channel is communicated with the side channels 10 respectively; four pressure guide holes are uniformly formed in the lower portion of the lower portion, and the lower channel is communicated with the side channels 10 respectively.
The number of the upper shearing pins 3 is four, and the upper shearing pins are respectively arranged in four pin through holes at the upper part of the central tube 2 and are used for fixing the pitching sliding sleeve 5.
The number of the lower shearing pins 7 is four, and the lower shearing pins are respectively arranged in four pin through holes in the middle of the central tube 2 and fix the pressure sliding sleeve 7.
When the device is used on site, the device is connected with a power tool, an expansion pipe and an expansion cone through oil pipes and is driven to a specified depth. At this time, the upper passage 8 and the lower passage 9 communicate through the side passage 10, and the present invention communicates with the power tool. When chemical patching, the pressure sliding sleeve 7 moves downwards in a pressing mode, the lower shearing pin 6 is sheared, the upper channel 8 is communicated with the casing damage section through the liquid outlet through hole, the chemical patching agent is injected into the oil pipe, and finally the chemical patching agent enters the casing damage section through the liquid outlet through the upper channel 8 to complete the chemical patching. After the chemical patching is finished, the ball-throwing sliding sleeve 5 moves downwards in a ball-throwing and pressing mode, the upper cutting pin 3 is cut off, the liquid outlet hole is closed, the upper channel 8 is communicated with the lower channel 9 through the side channel 10, and the upper oil pipe is communicated with a power tool again.
Claims (3)
1. A double-acting control valve for casing patching is characterized in that: the device consists of an upper joint (1), a central pipe (2), an upper shearing pin (3), a sealing ring (4), a pitching sliding sleeve (5), a lower shearing pin (6) and a pressure sliding sleeve (7); the upper joint (1) is in threaded connection with the central pipe (2), the ball injection sliding sleeve (5) is fixed in the central pipe (2) through an upper shearing pin (3), the pressure sliding sleeve (7) is fixed in the central pipe (2) through a lower shearing pin (6), and the sealing ring (4) is arranged in an outer annular groove of the central pipe (2), the ball injection sliding sleeve (5) and the pressure sliding sleeve (7);
two circular channels, namely an upper channel (8) and a lower channel (9), are axially drilled in the central tube (2); four rectangular side channels (10) are uniformly arranged on the outer sides of an upper channel (8) and a lower channel (9) of the central tube (2); four pin through holes are uniformly formed in the upper part of the central pipe (2) in the radial direction; four pin through holes are uniformly formed in the middle part in the radial direction; four liquid outlet through holes are uniformly formed in the middle part in the radial direction; four liquid discharge holes are uniformly formed in the radial direction of the lower part; four pressure guide holes are uniformly formed in the upper part of the central tube (2) in the radial direction, so that the upper channel (8) is communicated with the side channel (10); four pressure guide holes are uniformly formed in the middle of the central tube (2) in the radial direction, so that the upper channel (8) is communicated with the side channel (10); four pressure guide holes are uniformly formed in the lower portion of the central tube (2), so that the lower channel (9) is communicated with the side channel (10).
2. A double-acting control valve for casing patching according to claim 1, characterized in that: the number of the upper shearing pins (3) is four, and the upper shearing pins are respectively arranged in the four pin through holes at the upper part of the central tube (2) and are used for fixing the pitching sliding sleeve (5).
3. A double-acting control valve for casing patching according to claim 1, wherein: the number of the lower shearing pins (6) is four, and the lower shearing pins are respectively arranged in four pin through holes in the middle of the central pipe (2) and are used for fixing the pressure sliding sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010501415.2A CN111677480B (en) | 2020-06-04 | 2020-06-04 | Double-acting control valve for casing patching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010501415.2A CN111677480B (en) | 2020-06-04 | 2020-06-04 | Double-acting control valve for casing patching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111677480A CN111677480A (en) | 2020-09-18 |
| CN111677480B true CN111677480B (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010501415.2A Active CN111677480B (en) | 2020-06-04 | 2020-06-04 | Double-acting control valve for casing patching |
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| CN (1) | CN111677480B (en) |
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| CN111677480A (en) | 2020-09-18 |
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