CN113356795B - Fracturing sand prevention production sliding sleeve and application thereof - Google Patents
Fracturing sand prevention production sliding sleeve and application thereof Download PDFInfo
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- CN113356795B CN113356795B CN202110820449.2A CN202110820449A CN113356795B CN 113356795 B CN113356795 B CN 113356795B CN 202110820449 A CN202110820449 A CN 202110820449A CN 113356795 B CN113356795 B CN 113356795B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 211
- 239000004576 sand Substances 0.000 title claims abstract description 59
- 230000002265 prevention Effects 0.000 title claims abstract description 18
- 239000011148 porous material Substances 0.000 claims abstract description 106
- 238000007789 sealing Methods 0.000 claims description 27
- 238000010008 shearing Methods 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a fracturing sand prevention production sliding sleeve and application thereof. The fracturing sand prevention production sliding sleeve comprises a sliding sleeve outer cylinder, a production sleeve and a fracturing sleeve; a series of fracturing pore channels I and a series of production pore channels II are arranged on the sliding sleeve outer cylinder, and a sand-proof screen is welded outside the production pore channels I; an upper limit ring and a lower limit ring are arranged in the sliding sleeve outer cylinder; the whole cross section of the fracturing sleeve is of a step structure, the inner diameter of the upper section of the fracturing sleeve is equal to the outer diameter of the lower section of the production sleeve, the inner diameter of the middle section of the fracturing sleeve is consistent with the inner diameter of the production sleeve, and the lower section of the fracturing sleeve is provided with a ball seat I; the upper section is provided with a series of fracturing pore passages II which correspond to the fracturing pore passages I on the outer cylinder of the sliding sleeve one by one during fracturing; the production sleeve has a stepped structure as a whole, the upper section is a ball seat II, the middle section is provided with a series of production ducts II, and the production ducts II correspond to the production ducts I on the outer cylinder of the sliding sleeve one by one during production; the outer diameter of the lower section is equivalent to the inner diameter of the upper section of the fracturing sleeve. The invention can simultaneously have the production functions of sand fracturing and mechanical sand prevention; the device has the function of repeated switching, and is convenient for later-stage layered regulation or repeated fracturing operation.
Description
Technical Field
The invention relates to a fracturing sand prevention production sliding sleeve and application thereof, and belongs to the technical field of well completion yield increase.
Background
Fracturing is an effective means for modifying a reservoir and realizing production and injection increase of a development well. For a high-permeability loose reservoir, the aims of reservoir transformation and filling sand prevention are generally realized by adopting a fracturing filling technical means, the sealing capacity of a fracturing filling service pipe column and the large friction resistance of a small-size washpipe along the way are limited, the span and the number of layers of the fracturing filling process are limited, and meanwhile, the tool has a large outer diameter and relatively high cost under the condition of a certain drift diameter in a well completion pipe column, and is not suitable for a low-permeability tight reservoir with a high economic threshold. For a low-permeability compact reservoir development well, the current reservoir modification process takes sand fracturing or acid fracturing as a main means, and because the strength of reservoir rock is generally higher, the consideration of sand prevention is less, the reservoir modified is directly communicated with a production pipe column, and a sand blocking barrier is not arranged in the middle. For wells with sand control requirements, the sand is generally washed out circularly after fracturing, and then a sand control pipe column is independently put in, so that the process is complex and the cost is high. The aim of sand control can be achieved to a certain degree by applying resin coated sand, but the sand control depends on a space framework formed after cementation among sand grains, and the reliability is insufficient.
Therefore, it is very necessary to provide a fracturing sand control production sliding sleeve which is simple and convenient to operate and can simultaneously realize the purposes of sand adding fracturing and sand control production.
Disclosure of Invention
The invention aims to provide a fracturing sand control production sliding sleeve which is simple and convenient to operate and can achieve the purposes of sand adding fracturing and sand control production without replacing a pipe column and tools.
The fracturing sand prevention production sliding sleeve comprises a sliding sleeve outer cylinder, and a production sleeve and a fracturing sleeve which are arranged in the sliding sleeve outer cylinder, wherein the production sleeve and the fracturing sleeve are in sealing fit with the sliding sleeve outer cylinder;
the sliding sleeve outer barrel is provided with a plurality of fracturing pore channels I and a plurality of production pore channels I, the plurality of fracturing pore channels I are arranged along the circumferential direction of the sliding sleeve outer barrel, and the plurality of production pore channels I are arranged along the circumferential direction of the sliding sleeve outer barrel; a sand prevention screen is welded on the outer part of the production pore channel I;
the inner walls of the two ends of the sliding sleeve outer cylinder are respectively provided with an upper limiting ring and a lower limiting ring;
the fracturing sleeve and the production sleeve are of a step structure, wherein the inner diameter of the upper section of the fracturing sleeve is equivalent to the outer diameter of the lower section of the production sleeve (the fracturing sleeve and the production sleeve can move relatively after being matched with each other), the length of the upper section of the fracturing sleeve is slightly longer than the length of the lower section of the production sleeve, so that the tightness of the end surface of the upper section of the fracturing sleeve and the end surface of the middle section of the production sleeve when being matched with each other is not influenced by the end surface of the lower section of the production sleeve and the end surface of the middle section of the fracturing sleeve, the inner diameter of the middle section of the fracturing sleeve is consistent with the inner diameter of the middle section of the production sleeve, the lower section of the fracturing sleeve is a ball seat I, and the upper section of the production sleeve is a ball seat II;
the upper section of the fracturing sleeve is provided with a plurality of fracturing orifices II, and the middle section of the production sleeve is provided with a plurality of production orifices II; the number of the fracturing pore channels II is equal to that of the fracturing pore channels I, and the number of the production pore channels II is equal to that of the production pore channels I;
when the production sleeve is matched with the upper limiting ring and the lower section of the production sleeve is matched with the upper section of the fracturing sleeve, the production pore channel I is not communicated with the production pore channel II and the fracturing pore channel I is not communicated with the fracturing pore channel II, and the fracturing pore channel II is shielded by the lower section of the production sleeve;
when the production sliding sleeve is matched with the upper limiting ring and the fracturing sleeve is matched with the lower limiting ring, the production pore channel I is not communicated with the production pore channel II, and the fracturing pore channels I are communicated with the fracturing pore channels II (namely, are in one-to-one correspondence);
when the fracturing sleeve is matched with the lower limiting ring and the lower section of the production sleeve is matched with the upper section of the fracturing sleeve, the production pore channel I is communicated with the production pore channel II (namely, the production pore channel I and the production pore channel II are in one-to-one correspondence), and the fracturing pore channel I and the fracturing pore channel II are shielded by the lower section of the production sleeve.
In the fracturing sand prevention production sliding sleeve, the fracturing sleeve is matched with the outer sleeve of the sliding sleeve through three groups of sealing rings I;
and two ends of the fracturing pore channel II are respectively provided with a group of sealing ring I and two groups of sealing rings I.
In the fracturing sand prevention production sliding sleeve, the production sleeve is matched with the outer cylinder of the sliding sleeve through three groups of sealing rings II;
and a group of sealing rings II and two groups of sealing rings II are respectively arranged at two ends of the production pore channel II.
In the fracturing sand control production sliding sleeve, the production pore passages and the fracturing pore passages are uniformly arranged at intervals.
The invention further provides a use method of the fracturing sand control production sliding sleeve, which comprises the following steps:
s1, before entering a well, fixing the fracturing sleeve in the sliding sleeve outer barrel by using a shearing pin I, fixing the production sleeve in the sliding sleeve outer barrel by using a shearing pin II, enabling the production sleeve to be matched with the upper limiting ring, and enabling the upper section of the fracturing sleeve to be matched with the lower end of the production sleeve; the pressure sealing among the fracturing sleeve, the production sleeve and the sliding sleeve outer cylinder is realized by the sealing ring II on the production sleeve and the sealing ring I on the fracturing sleeve, and the pressure isolation is realized inside and outside the whole fracturing sand control production sliding sleeve;
s2, after the isolation packer is pressurized and set, a soluble ball I is thrown to sit on the ball seat I of the fracturing sleeve, after the shearing pin I is sheared off in a pipe column in a pressurizing mode, the fracturing sleeve is pushed to descend to the lower limiting ring, the fracturing pore passages II in the fracturing sleeve correspond to the fracturing pore passages I in the sliding sleeve outer cylinder one by one, and then fracturing operation is carried out;
s3, after fracturing operation is finished, putting a soluble ball II on the ball seat II on the upper part of the production sleeve, pushing the production sleeve to move downwards after the shearing pin II is sheared by pressurization in a pipe column, enabling the lower section of the production sleeve to be matched with the upper section of the fracturing sleeve until a middle step of the production sleeve is contacted with the top of the fracturing sleeve, enabling the production pore passages II on the production sleeve to correspond to the production pore passages I on the outer barrel of the sliding sleeve one by one, and enabling the lower section of the production sleeve to shield the fracturing pore passages II on the fracturing sleeve;
and S4, continuing throwing the soluble ball to complete subsequent well section fracturing operation and production sleeve opening operation.
After operation, the soluble ball is automatically decomposed into granular substances under the action of fluid in the shaft and returns out of the shaft along with the return liquid without mechanical drilling plug or recovery.
During production, the production pore channels of all well sections are in an open state, the fracturing pore channels are blocked and closed by the production sleeve, and stratum fluid can only enter the production pipe column through the sand control screen, so that sand control production is realized.
In the production process, if a certain layer section needs to be closed or repeated fracturing operation is carried out, steel wire operation (a conventional directional well) or coiled tubing operation (a highly-deviated well or a horizontal well) can be adopted, a switch tool is matched with the ball seat I at the lower part of the fracturing sleeve, and closing and resetting of the fracturing sleeve and the production sleeve are realized by lifting. And repeatedly throwing soluble balls with corresponding sizes, and then carrying out repeated fracturing operation or reopening production.
The fracturing sand prevention production sliding sleeve has the following beneficial technical effects:
1. meanwhile, the sand fracturing and mechanical sand prevention production functions are realized, and the problem of sand prevention after sand fracturing is solved;
2. the operation is simple and convenient because the control is realized by throwing balls after the well is entered;
3. the packer can be matched with a conventional isolation packer to realize one-time multilayer fracturing operation, and has no special requirements on a fracturing string;
4. the device has the function of repeated switching, and is convenient for later-stage layered regulation or repeated fracturing operation.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the fracturing sand control production sliding sleeve of the invention.
FIG. 2 is a schematic structural diagram of the sliding sleeve outer cylinder in the fracturing sand control production sliding sleeve of the invention.
FIG. 3 is a cross-sectional view of a fracturing sleeve in the fracturing sand control production sliding sleeve of the present invention.
FIG. 4 is a cross-sectional view of a production sleeve in the fracturing sand control production sliding sleeve of the present invention.
FIG. 5 is a schematic representation of a staged fracturing production string.
FIG. 6 is a schematic diagram of the fracturing sand control production sliding sleeve when a fracturing sleeve is opened by throwing a soluble ball in the use process of the fracturing sand control production sliding sleeve.
FIG. 7 is a schematic diagram of the soluble ball throwing process of opening the production sleeve and closing the fracturing sleeve during the use of the fracturing sand control production sleeve of the present invention.
FIG. 8 is a schematic diagram of the fracturing sand control production sliding sleeve during use, with the switch tool lifted up and the sliding sleeve reset.
The respective symbols in the figure are as follows:
the production device comprises a sliding sleeve outer barrel 1, a production sleeve 2, a fracturing sleeve 3, a fracturing pore channel I4, a production pore channel I5, a sand prevention screen 6, an upper limiting ring 7, a lower limiting ring 8, a ball seat I9, a ball seat II 10, a fracturing pore channel II 11, a production pore channel II 12, a sealing ring I13, a sealing ring II 14, a shearing pin I15 and a shearing pin II 16.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
As shown in fig. 1, the schematic diagram of the overall structure of the fracturing sand control production sliding sleeve provided by the invention comprises a sliding sleeve outer cylinder 1, and a production sleeve 2 and a fracturing sleeve 3 which are arranged in the sliding sleeve outer cylinder 1, wherein the production sleeve 2 and the fracturing sleeve 3 are in sealing fit with the sliding sleeve outer cylinder 1.
As shown in fig. 1 and fig. 2, a plurality of fracturing pore channels i 4 and a plurality of production pore channels i 5 are uniformly arranged on a sliding sleeve outer cylinder 1, the plurality of fracturing pore channels i 4 are arranged along the circumferential direction of the sliding sleeve outer cylinder 1, and the plurality of production pore channels i 5 are arranged along the circumferential direction of the sliding sleeve outer cylinder 1; and a sand control screen 6 is welded on the outer part of the production pore channel I5 and is used for preventing sand during production operation. The inner walls of two ends of the sliding sleeve outer barrel 1 are respectively provided with an upper limiting ring 7 and a lower limiting ring 8, the upper limiting ring 7 is used for restricting an upward migration path of the production sleeve 2, and the lower limiting ring 8 is used for restricting a downward migration path of the fracturing sleeve 3.
As shown in fig. 3 and 4, the fracturing sleeve 3 and the production sleeve 2 are both of a step structure, wherein the inner diameter of the upper section of the fracturing sleeve 3 is equivalent to the outer diameter of the lower section of the production sleeve 2 (the two can move relatively after being matched), and the length of the upper section of the fracturing sleeve 3 is slightly longer than that of the lower section of the production sleeve 2, so that the tightness of the end surface of the upper section of the fracturing sleeve 3 and the end surface of the middle section of the production sleeve 2 in matching is not affected by the end surface of the lower section of the production sleeve 2 and the end surface of the middle section of the fracturing sleeve 3; the middle section internal diameter of fracturing sleeve 3 is unanimous with the middle section internal diameter of production sleeve 2, and the hypomere of fracturing sleeve 3 is ball seat I9, and the upper segment of production sleeve 2 is ball seat II 10. A plurality of fracturing pore passages II 11 which are uniformly distributed are arranged on the upper section of the fracturing sleeve 3, a plurality of production pore passages II 12 which are uniformly distributed are arranged on the middle section of the production sleeve 2, the number of the fracturing pore passages II 11 is equal to that of the fracturing pore passages I4, and the number of the production pore passages II 12 is equal to that of the production pore passages I5.
When the production sliding sleeve 2 is matched with the upper limiting ring 7, the lower section of the production sliding sleeve 2 is matched with the upper section of the fracturing sleeve 3, the production pore channel I5 and the production pore channel II 12 are not communicated with each other, the fracturing pore channel I4 and the fracturing pore channel II 11 are not communicated with each other, and the fracturing pore channel II 11 is shielded by the lower section of the production sliding sleeve 2, as shown in figure 1.
When the production sliding sleeve 2 is matched with the upper limiting ring 8 and the fracturing sleeve 3 is matched with the lower limiting ring 8, the production pore channel I5 is not communicated with the production pore channel II 12, the fracturing pore channels I4 are communicated with the fracturing pore channels II 11 (namely, are in one-to-one correspondence), and the fracturing pore channels II 1 are communicated with the inside of the sliding sleeve outer cylinder 1, as shown in fig. 6.
When the fracturing sleeve 3 is matched with the lower limiting ring 8 and the lower section of the production sliding sleeve 2 is matched with the upper section of the fracturing sleeve 3, the production pore channel I5 is communicated with the production pore channel II 12 (namely, the production pore channels are in one-to-one correspondence), and the fracturing pore channel I4 is not communicated with the fracturing pore channel II 11, as shown in figure 7.
In order to enhance the sealing performance between the sliding sleeve outer cylinder 1 and the production sleeve 2 as well as the fracturing sleeve 3, 3 groups of sealing rings I13 are arranged outside the fracturing sleeve 3, wherein 1 group is positioned at the upper part of a fracturing hole channel II 11, and the other 2 groups are positioned at the lower part of the fracturing hole channel II 11. And 3 groups of sealing rings II 14 are arranged outside the production sleeve 2, wherein 1 group is positioned at the upper part of the production hole II 12 on the production sleeve 2, and the other 2 groups are positioned at the lower part of the production hole II 12.
The fracturing sand control production sliding sleeve is a part of a staged fracturing production string, and the assembly position of the fracturing sand control production sliding sleeve is shown in figure 5.
Before going into the well, rely on II 15 of shear pin to be fixed in the inside of sliding sleeve urceolus 1 with fracturing sleeve 3, rely on II 16 of shear pin to be fixed in the inside of sliding sleeve urceolus 1 with production sleeve 2. The upper part of the production sleeve 2 is tightly attached to the upper limiting ring 7, the upper section of the fracturing sleeve 3 is sleeved outside the lower section of the production sleeve 2, and the upper end part of the fracturing sleeve is tightly attached to the middle step of the production sleeve 2. By means of 3 groups of sealing rings II 14 on the production sleeve 2 and 3 groups of sealing rings I13 on the fracturing sleeve 3, pressure sealing among the fracturing sleeve 3, the production sleeve 2 and the sliding sleeve outer barrel 1 is realized, and pressure isolation is realized inside and outside the whole fracturing sand control production sliding sleeve, as shown in figure 1.
As shown in figure 6, after the isolation packer is pressurized and set, a soluble ball I is firstly thrown to sit on a ball seat I9 at the lower part of the fracturing sleeve 3, after a shearing pin I15 is sheared by pressurization in a pipe column, the fracturing sleeve 3 is pushed to descend to a lower limit ring 8, fracturing pore passages II 11 in the fracturing sleeve 3 correspond to fracturing pore passages I4 in the sliding sleeve outer barrel 1 one by one, and then fracturing operation is carried out.
After fracturing operation is finished, a soluble ball II is put in a ball seat II 10 at the upper part of the production sleeve 2, and after a shearing pin II 16 is sheared by pressurization in a pipe column, the production sleeve 2 is pushed to descend until the middle step of the production sleeve is contacted with the top of the fracturing sleeve 3. At the moment, the production pore channels II 12 on the production sleeve 2 correspond to the production pore channels I5 on the sliding sleeve outer barrel 1 one by one, and the lower section of the production sleeve 2 shields the fracturing pore channels II 11 on the fracturing sleeve 3.
And (5) continuing throwing the soluble ball to complete the follow-up well section fracturing operation and the production sleeve opening operation.
After operation, the soluble ball is automatically decomposed into granular substances under the action of fluid in the shaft and returns out of the shaft along with the return liquid without mechanical drilling plug or recovery.
During production, the production pore channels of all well sections are in an open state, the fracturing pore channels are blocked and closed by the production sleeve, and stratum fluid can only enter the production pipe column through the sand-prevention screen 6, so that sand-prevention production is realized.
As shown in fig. 8, in the production process, if a certain section needs to be closed or a repeated fracturing operation needs to be performed, a steel wire operation (a conventional directional well) or a coiled tubing operation (a highly deviated well or a horizontal well) can be adopted, and a switching tool is used for matching with a ball seat i 9 at the lower part of the fracturing sleeve 3 to realize the closing and resetting of the fracturing sleeve 3 and the production sleeve 2 by lifting. And repeatedly throwing soluble balls with corresponding sizes to perform repeated fracturing operation or reopen production.
Claims (6)
1. A fracturing sand prevention production sliding sleeve comprises a sliding sleeve outer barrel, a production sleeve and a fracturing sleeve, wherein the production sleeve and the fracturing sleeve are arranged in the sliding sleeve outer barrel, and both the production sleeve and the fracturing sleeve are in sealing fit with the sliding sleeve outer barrel;
the sliding sleeve outer barrel is provided with a plurality of fracturing pore channels I and a plurality of production pore channels I, the plurality of fracturing pore channels I are arranged along the circumferential direction of the sliding sleeve outer barrel, and the plurality of production pore channels I are arranged along the circumferential direction of the sliding sleeve outer barrel; a sand prevention screen is welded on the outer part of the production pore channel I;
the inner walls of the two ends of the sliding sleeve outer cylinder are respectively provided with an upper limiting ring and a lower limiting ring;
the fracturing sleeve and the production sleeve are of a step structure, wherein the inner diameter of the upper section of the fracturing sleeve is equivalent to the outer diameter of the lower section of the production sleeve, the length of the upper section of the fracturing sleeve is slightly longer than the length of the lower section of the production sleeve, the inner diameter of the middle section of the fracturing sleeve is consistent with the inner diameter of the middle section of the production sleeve, the lower section of the fracturing sleeve is a ball seat I, and the upper section of the production sleeve is a ball seat II;
the upper section of the fracturing sleeve is provided with a plurality of fracturing channels II, and the middle section of the production sleeve is provided with a plurality of production channels II; the number of the fracturing pore channels II is equal to that of the fracturing pore channels I, and the number of the production pore channels II is equal to that of the production pore channels I;
when the production sliding sleeve is matched with the upper limiting ring and the lower section of the production sliding sleeve is matched with the upper section of the fracturing sleeve, the production pore channel I is not communicated with the production pore channel II and the fracturing pore channel I is not communicated with the fracturing pore channel II, and the fracturing pore channel II is shielded by the lower section of the production sliding sleeve;
when the production sliding sleeve is matched with the upper limiting ring and the fracturing sleeve is matched with the lower limiting ring, the production pore channel I is not communicated with the production pore channel II, and the fracturing pore channel I is communicated with the fracturing pore channel II;
when the fracturing sleeve is matched with the lower limiting ring and the lower section of the production sliding sleeve is matched with the upper section of the fracturing sleeve, the production pore channel I is communicated with the production pore channel II, and the fracturing pore channel I and the fracturing pore channel II are shielded by the lower section of the production sleeve.
2. The fracturing sand control production sliding sleeve of claim 1, wherein: the fracturing sleeve is matched with the sliding sleeve outer cylinder through three groups of sealing rings I;
and two ends of the fracturing pore channel II are respectively provided with a group of sealing ring I and two groups of sealing rings I.
3. The fracturing sand control production sliding sleeve of claim 1 or 2, wherein: the production sleeve is matched with the sliding sleeve outer cylinder through three groups of sealing rings II;
and a group of sealing rings II and two groups of sealing rings II are respectively arranged at two ends of the production pore channel II.
4. The fracturing sand control production sliding sleeve of claim 3, wherein: the production and fracturing tunnels are evenly spaced.
5. The method of using the fracturing sand control production sleeve of any of claims 1 to 4, comprising the steps of:
s1, before entering a well, fixing the fracturing sleeve inside the sliding sleeve outer barrel by using a shearing pin I, fixing the production sleeve inside the sliding sleeve outer barrel by using a shearing pin II, so that the production sleeve is matched with the upper limiting ring, and the upper section of the fracturing sleeve is matched with the lower end of the production sleeve;
s2, after the isolation packer is sealed in a pressurized setting mode, a soluble ball I is thrown to sit on the ball seat I of the fracturing sleeve, after the shearing pin I is cut off in a pipe column in a pressurized mode, the fracturing sleeve is pushed to descend to the lower limiting ring, the fracturing pore channels II in the fracturing sleeve correspond to the fracturing pore channels I in the sliding sleeve outer barrel one to one, and then fracturing operation is carried out;
s3, after fracturing operation is finished, putting a soluble ball II on the ball seat II at the upper part of the production sleeve, pushing the production sleeve to move downwards after a shearing pin II is sheared by pressurization in a pipe column, enabling the lower section of the production sleeve to be matched with the upper section of the fracturing sleeve until a middle step of the production sleeve is contacted with the top of the fracturing sleeve, enabling the production pore passages II on the production sleeve to correspond to the production pore passages I on the outer barrel of the sliding sleeve one by one, and enabling the lower section of the production sleeve to shield the fracturing pore passages on the fracturing sleeve;
and S4, continuing throwing the soluble ball to complete subsequent well section fracturing operation and production sleeve opening operation.
6. Use according to claim 5, characterized in that: and a switch tool is matched with the ball seat I at the lower part of the fracturing sleeve, and the fracturing sleeve and the production sleeve are closed and reset by lifting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110820449.2A CN113356795B (en) | 2021-07-20 | 2021-07-20 | Fracturing sand prevention production sliding sleeve and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110820449.2A CN113356795B (en) | 2021-07-20 | 2021-07-20 | Fracturing sand prevention production sliding sleeve and application thereof |
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| CN113356795B true CN113356795B (en) | 2022-12-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439422B (en) * | 2020-11-06 | 2024-05-07 | 中国石油化工股份有限公司 | Sliding sleeve with sand prevention structure |
| CN114922598B (en) * | 2022-04-11 | 2023-11-21 | 中海石油(中国)有限公司 | Experimental device and method for loose sandstone sample preparation and fracturing simulation |
| CN114837613A (en) * | 2022-05-12 | 2022-08-02 | 安东石油技术（集团）有限公司 | Sand control fracturing ball injection sliding sleeve |
| CN118029958A (en) * | 2024-03-14 | 2024-05-14 | 西南石油大学 | Infinite sand control fracturing sliding sleeve |
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| CN102536187A (en) * | 2012-02-24 | 2012-07-04 | 中国石油大学(北京) | Switchable hydraulic jet fracturing underground device with combined slide sleeves |
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