CN217380484U - Special sealing suspension system for same-well mining and irrigation and well body structure - Google Patents
Special sealing suspension system for same-well mining and irrigation and well body structure Download PDFInfo
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- CN217380484U CN217380484U CN202121140114.8U CN202121140114U CN217380484U CN 217380484 U CN217380484 U CN 217380484U CN 202121140114 U CN202121140114 U CN 202121140114U CN 217380484 U CN217380484 U CN 217380484U
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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
- Y02E10/10—Geothermal energy
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Abstract
The utility model belongs to the technical field of geothermal water is adopted with the well and irritates, specifically disclose a special sealed suspension system who adopts and irritates with the well, including setting up top layer sleeve pipe (1) inside the cylinder, top layer sleeve pipe (1) is connected with production sleeve pipe (3) through reducer union (2) in an open section, top layer sleeve pipe (1) and production sleeve pipe (3) form the cavity ring canal, cavity ring canal inside is provided with suspension seal circle (4), and suspension seal circle (4) lateral wall is provided with a plurality of through-holes (6) perpendicularly, suspension seal circle (4) and hollow ring canal interference are connected, production sleeve pipe (3) inner chamber still is provided with technical sleeve pipe (5). The utility model discloses at the intraductal a plurality of suspension seal that are provided with of cavity ring in top layer sleeve pipe and production sleeve pipe formation, play and prevent that the effect of watering backward flow and hot and cold water emergence cluster water.
Description
Technical Field
The utility model belongs to the technical field of geothermal water is adopted to irritate with the well, in particular to adopt special sealed suspension and well body structure of irritating with the well.
Background
With the development of science and technology and the shortage of energy sources, underground heat energy with wide distribution, strong reproducibility and low cost has attracted extensive attention of people. At present, the heating (cooling) by energy conversion is realized by using underground heat energy as a cold and heat source, but the prior art mostly adopts double-well or multi-well pumping and recharging, namely one well pumps water and the other well or a plurality of wells recharges, the technology not only has a large number of drilled wells, but also changes the distribution of underground water, and the underground water level near the pumping well is reduced due to long-term operation, so that the problems of ground settlement and the like occur, and the potential safety hazard exists.
In order to solve the problems, the same-well mining and filling technology is used by more and more people, a water collecting area and a water recharging area are arranged in a well, water is collected and located at the lower part of the water recharging area, and a hollow ring pipe formed by different inner-diameter sleeves is used as a water recharging channel to realize same-well mining and filling. However, the following technical problems can occur during assembly: because the sleeve is long and the temperature difference between the reinjection water and the produced water is large, the inner pipe is easy to be subjected to flexural deformation due to thermal expansion and cold contraction and cannot be centered, and the hollow ring pipe is blocked; the inner pipe has heavy weight, so that the pressure on the bottom of the cylinder barrel is high, and the damage of the cylinder barrel is aggravated; more importantly, in the recharging process, the recharging water flows back and the recharging water and the produced water are mixed.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a new special sealing suspension system for same well production and irrigation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a special sealed suspension who adopts and irritates with the well.
The utility model discloses a first aspect provides a with well adopt special sealed suspension system who irritates, including setting up at the inside surface casing 1 of cylinder, surface casing 1 is connected with production sleeve 3 through reducer union 2 in one division section, surface casing 1 and production sleeve 3 form the cavity ring canal, the inside suspension seal 4 that is provided with of cavity ring canal, suspension seal 4 lateral walls are provided with a plurality of through-holes 6 perpendicularly, suspension seal 4 and hollow ring canal interference are connected, 3 inner chambers of production sleeve still are provided with technical casing 5.
In a further scheme, the surface casing 1 is a phi 339.7 casing, and the production casing 3 is a phi 219.08 casing.
Further scheme does, hang sealing washer 4 and be the silica gel structure, the internal diameter is 219.08mm, and the external diameter is 320mm, wall thickness 100.92mm, hang sealing washer 4 height and be 400 mm.
Further, the number of the through holes 6 is 6.
Further, the through holes 6 are uniformly distributed along the suspension seal ring 4.
Further, the aperture of the through hole 6 is 50-100 mm.
The second aspect of the utility model provides a well body structure, well body structure includes the special sealed suspension that the aforesaid was adopted to irritate with the well.
The well body structure is a vertical well and comprises a first well opening section and a second well opening section, and is characterized in that a sand setting pipe, a water production sieve pipe and a recharging sieve pipe are sequentially arranged at the bottom of the second well opening section from top to bottom, a production casing pipe 3 is arranged at the upper end of the sand setting pipe, the whole well opening section is used for well cementation and returns to the ground, the first well opening section is arranged at the upper part of the second well opening section, a surface casing pipe 1 is arranged at the first well opening section, the surface casing pipe 1 is arranged at the upper end of the production casing pipe 3 and is arranged at the outer side of the whole well cementing section, the outer side of the surface casing pipe 1 is sealed by cement to form a well opening and fixing section and returns to the ground, a technical casing pipe 5 is arranged in the geothermal well, and a packer is arranged at the outer side of the technical casing pipe 5; the total depth of the well structure is 3000m, the surface casing 1 is 450m, and at least one suspension sealing ring 4 is arranged in a hollow annular pipe formed by the surface casing 1 and the production casing 3.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the utility model discloses be provided with a plurality of suspension seal circle in the cavity ring pipe in top layer sleeve pipe and production sleeve pipe formation, play and prevent that the effect of flowing back and hot and cold water emergence cluster water of watering back.
(2) The utility model discloses well suspension seal circle is connected with the interference of cavity ring canal, can play the rightting effect to the production sleeve pipe, avoids the production sleeve pipe to take place flexural deformation.
(3) The utility model discloses the suspension seal circle that sets up can turn into the partial gravity of production sleeve pipe to the cylinder and to the stress of top layer sleeve pipe lateral wall, has reduced the bearing pressure of cylinder, has strengthened whole well body quality.
Drawings
The following drawings are merely illustrative of and explanatory of the invention and are not intended to limit the scope of the invention, wherein:
FIG. 1: the utility model discloses a schematic diagram of an underground assembly structure;
FIG. 2: a top view of the suspension seal ring;
in the figure: 1 surface casing pipe, 2 reducer joints, 3 production casing pipes, 4 suspension seal rings, 5 technical casing pipes and 6 through holes.
Detailed Description
In order to make the objects, technical solutions, design methods, and advantages of the present invention more clear, the present invention will be further described in detail by the following embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 and 2, the utility model discloses an aspect provides a with sealed suspension system of special use that well was adopted and was irritated, including setting up at the inside top casing 1 of cylinder, top casing 1 is connected with production sleeve 3 through reducer union 2 in an open section, top casing 1 and production sleeve 3 form the cavity ring pipe, the inside suspension seal 4 that is provided with of cavity ring pipe, suspension seal 4 lateral wall are provided with a plurality of through-holes 6 perpendicularly, suspension seal 4 and hollow ring pipe interference are connected, production sleeve 3 inner chamber still is provided with technical sleeve 5.
Wherein, top layer sleeve pipe 1 is phi 339.7 sleeve pipe, production sleeve pipe 3 is phi 219.08 sleeve pipe, hang sealing washer 4 and be the silica gel structure, and the internal diameter is 219.08mm, and the external diameter is 320mm, wall thickness 100.92mm, hang sealing washer 4 height and be 400 mm.
Optionally, 6 through holes are arranged in the through holes 6, and the aperture of each through hole 6 is 50-100mm, so that the recharge water can smoothly flow into a recharge area.
The utility model discloses a sealed principle: because the reinjection water is cold water, the produced water is hot water, the density of the cold water is higher than that of the hot water, the reinjection water forms a liquid seal at the bottom of the suspension seal ring 4, the produced water can be prevented from overflowing from the through hole 6, and the effects of isolating the reinjection water and the produced water are achieved.
The utility model discloses a decompression principle: because the suspension seal ring 4 is tightly connected with the hollow ring pipe in an interference manner, the suspension seal ring 4 is of a flexible silica gel structure, the side wall is further provided with a through hole 6, the suspension seal ring 4 forms extrusion force on the side wall of the surface layer casing pipe 1 under the action of gravity of the production casing pipe 3, the suspension seal ring 4 can offset partial gravity of the production casing pipe 3 through the extrusion force, the gravity of the production casing pipe 1 is reduced, and further the bearing pressure of the cylinder barrel is reduced.
The second aspect of the utility model provides a well body structure, well body structure includes the special sealed suspension that the aforesaid was adopted to irritate with the well.
The well body structure is a vertical well and comprises a first well-opening section and a second well-opening section, and is characterized in that a sand-sinking pipe, a water production sieve pipe and a recharging sieve pipe are sequentially arranged at the bottom of the second well-opening section from top to bottom, a production casing pipe 3 is arranged at the upper end of the sand-sinking pipe, the sand-sinking pipe is well-cemented by a cement slurry full well section and returns to the ground, the first well-opening section is arranged at the upper part of the second well-opening section, a surface casing pipe 1 is arranged at the first well-opening section, the surface casing pipe 1 is arranged at the upper end of the production casing pipe 3 and is arranged at the outer side of the full well-cementing section, the outer side of the surface casing pipe 1 is sealed by cement to form a well-opening cementing section and returns to the ground, a technical casing pipe 5 is arranged in the geothermal well, and a packer is arranged at the outer side of the technical casing pipe 5; the total depth of the well structure is 3000m, the surface casing 1 is 450m, and at least one suspension sealing ring 4 is arranged in a hollow annular pipe formed by the surface casing 1 and the production casing 3.
The utility model discloses a use does: firstly, drilling to the well depth of 450m by adopting a phi 444.5mm drill bit, then lowering phi 339.7mm surface casing pipes to 449m so as to meet the requirements of packing a surface layer unconsolidated formation and a lower water pump, and returning cement to the ground; and drilling a drill bit with the diameter of 241.3mm to the well depth of 3500m, wherein the recharging layer position is 1500 m. The surface casing 1 is a phi 339.7 casing, the production casing 3 is a phi 219.08 casing, and a hollow ring pipe is formed between the two casings and is used for recharging water to flow into a recharging area. On well head upper portion, the device of recharging passes through three-way pipe and cavity ring canal intercommunication, and in the well head lower part, the inside suspension seal 4 and the intraductal packer of setting of cavity ring canal, when recharging, start intraductal packer earlier, then open the device of recharging, will recharge water drainage to the cavity ring canal, and the through-hole 6 that the water of recharging passed suspension seal 4 gets into the district of recharging, and at this in-process, suspension seal 4 can bring a plurality of beneficial effect: on the one hand, the reinjection water and the mining water can be separated to prevent backflow, on the other hand, the gravity of the production sleeve 1 can be reduced, the bearing pressure of the cylinder barrel is further reduced, the production sleeve 1 can be righted, and the reinjection channel of the reinjection water is guaranteed to be smooth.
It should be noted that in the embodiment of the present invention, a suspension seal ring is disposed in the hollow ring tube, in practical application, a plurality of suspension seal rings can be disposed according to engineering requirements, and the sealing, pressure reducing and righting effects can be further enhanced.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the market, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (8)
1. The utility model provides a sealed suspension system of special use that irritates is adopted with well, its characterized in that, is including setting up at inside surface casing (1) of cylinder, surface casing (1) is connected with production sleeve pipe (3) through reducer union (2) in one section, surface casing (1) and production sleeve pipe (3) form the cavity ring canal, cavity ring canal inside is provided with suspension seal circle (4), and suspension seal circle (4) lateral wall is provided with a plurality of through-holes (6) perpendicularly, suspension seal circle (4) and cavity ring canal interference are connected, production sleeve pipe (3) inner chamber still is provided with technical sleeve pipe (5).
2. A special sealing suspension system for same well production and irrigation according to claim 1, characterized in that the surface casing (1) is a phi 339.7 casing and the production casing (3) is a phi 219.08 casing.
3. The special sealing suspension system for mining and irrigating from the same well as recited in claim 2, wherein the suspension sealing ring (4) is of a silica gel structure, the inner diameter is 219.08mm, the outer diameter is 320mm, the wall thickness is 100.92mm, and the height of the suspension sealing ring (4) is 400 mm.
4. A special sealing and hanging system for same well production and irrigation according to claim 3 and characterized in that there are 6 through holes (6).
5. The special sealing and suspending system for co-well irrigation and production according to claim 4, wherein the 6 through holes (6) are uniformly distributed along the side wall of the suspending sealing ring (4).
6. The special sealing and hanging system for co-well irrigation and production according to claim 5, wherein the diameter of the through hole (6) is 50-100 mm.
7. A wellbore construction comprising a dedicated seal suspension system for producing fluid from a well according to any one of claims 1 to 6.
8. The well body structure is characterized in that the two well-opening sections are sequentially provided with a sand-settling pipe, a water production screen pipe and a recharging screen pipe from bottom to top, the upper end of the sand-settling pipe is provided with a production casing pipe (3) and is cemented by cement slurry in the whole well section to return to the ground, the first well-opening section is arranged at the upper parts of the two well-opening sections, a surface casing pipe (1) is arranged at the first well-opening section, the surface casing pipe (1) is arranged at the upper end of the production casing pipe (3) and is arranged outside the whole well-cementing section, the outer side of the surface casing pipe (1) is sealed by cement to form a well-opening section and returns to the ground, a technical casing pipe (5) is arranged inside the geothermal well, and a packer is arranged outside the technical casing pipe (5); the total depth of the well structure is 3000m, the surface casing (1) is 450m, and at least one suspension sealing ring (4) is arranged in a hollow annular pipe formed by the surface casing (1) and the production casing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121140114.8U CN217380484U (en) | 2021-05-26 | 2021-05-26 | Special sealing suspension system for same-well mining and irrigation and well body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121140114.8U CN217380484U (en) | 2021-05-26 | 2021-05-26 | Special sealing suspension system for same-well mining and irrigation and well body structure |
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| Publication Number | Publication Date |
|---|---|
| CN217380484U true CN217380484U (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121140114.8U Active CN217380484U (en) | 2021-05-26 | 2021-05-26 | Special sealing suspension system for same-well mining and irrigation and well body structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266297A (en) * | 2021-05-26 | 2021-08-17 | 中石化绿源地热能(陕西)开发有限公司 | Special sealing suspension system for same-well mining and irrigation and well body structure |
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2021
- 2021-05-26 CN CN202121140114.8U patent/CN217380484U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266297A (en) * | 2021-05-26 | 2021-08-17 | 中石化绿源地热能(陕西)开发有限公司 | Special sealing suspension system for same-well mining and irrigation and well body structure |
| CN113266297B (en) * | 2021-05-26 | 2024-10-22 | 中石化绿源地热能(陕西)开发有限公司 | Special sealed suspension system and well body structure for same-well mining and irrigation |
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