CN115075768A - Deep crack heat storage geothermal water-bearing stratum packing device, water collecting device and packing method - Google Patents
Deep crack heat storage geothermal water-bearing stratum packing device, water collecting device and packing method Download PDFInfo
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- CN115075768A CN115075768A CN202210963662.3A CN202210963662A CN115075768A CN 115075768 A CN115075768 A CN 115075768A CN 202210963662 A CN202210963662 A CN 202210963662A CN 115075768 A CN115075768 A CN 115075768A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 238000012856 packing Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005338 heat storage Methods 0.000 title claims description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000003860 storage Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 238000012546 transfer Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005258 radioactive decay Effects 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- 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
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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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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a deep crack thermal storage geothermal water-bearing stratum packing device, a water collecting device and a packing method, belonging to the technical field of packers; the packer comprises a supporting cylinder body, and a triggering mechanism and an expansion mechanism are arranged on the supporting cylinder body; the expansion mechanism is expanded through gas production to carry out packing; the invention not only reduces the difficulty of deep well operation, but also saves a large amount of manpower and material resources, and realizes the automatic operation of the packer in the well; adopt two packers to add the structure constitution of flexible pipe and become a super large packing and separate the device, first compare in making whole packer more save material, the second is because the reason that adopts flexible pipe, and it is also more convenient to transfer.
Description
Technical Field
The invention belongs to the technical field of packers, and relates to a deep crack thermal storage geothermal water-bearing stratum packing device, a water collecting device and a packing method.
Background
Geothermal heat refers to renewable heat stored in the earth, typically generated by molten magma, radioactive decay, or movement of geological structures. Based on the renewable nature of geothermal energy and the cleanness of energy, the geothermal energy can be adopted at any time, and the development and the utilization of geothermal energy are paid more and more attention by countries. If the thermal reservoir is a large thick crack type thermal reservoir with a large depth, the crack zone or the fault fracture zone is a geothermal exploitation target layer, generally, a plurality of such exploitation target layers are provided, the temperature difference between the upper exploitation target layer and the lower exploitation target layer is large, and the outlet temperature is low during mixed exploitation, so that the layered exploitation is required. In particular, in the initial stage of mining, when the mining technical parameters of a plurality of mining target layers with different depths are required to be mastered, the layered water pumping and recharging are required to be implemented. At present, layered water pumping equipment on the market is a domestic or foreign packer, and a pumping station is still adopted for inflating the packer to be matched with a pipeline for pressurizing, the pressurizing mode is suitable for layered water pumping of a shallow geothermal well, and for a deep geothermal well, the quality requirement of a guide pipe is more strict due to the well depth, and the guide pipe is too long, so that the material waste is caused, the use effect of the packer is easily influenced, and the service life of the packer is shortened; at present, when the operation such as pumping water in a deep well is carried out, the remote control signal cannot be transmitted due to the fact that the distance of the packer using the remote control device is too far, and therefore the automatic operation of the packer is urgent; secondly the aquifer is about 300m at most, makes the long 300 m's of a single packing element packer, and firstly the consumptive material is too many, and secondly the packing element inflation is difficult, and thirdly whole packer transfers inconveniently, consequently, just need design an automatic inflation, transfers the convenience, save material's deep water intaking seals and separates the device.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a deep crack heat storage geothermal water-bearing stratum packing device, a water collecting device and a packing method. To solve the problems set forth in the background art described above.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
A deep crack heat storage geothermal water-bearing stratum packer comprises a supporting cylinder body, wherein a trigger mechanism and an expansion mechanism are arranged on the supporting cylinder body;
the trigger mechanism comprises a roller, a one-way gear, a screw and a power supply; the roller and the one-way gear are connected with the rotating shaft key; the gear is connected with the screw rod; the gear is meshed with the one-way gear, a circle of slotted hole is arranged around the end part of the screw rod, and a conductive block is arranged in the slotted hole; a conductive plate matched with the conductive block is arranged on one side of the gear facing the slotted hole; two-stage wiring of the power supply, wherein two wiring end parts extend into the expansion mechanism and are connected with the capacitor; one of the connecting wires is of a disconnecting structure, one disconnected end is connected with the conducting plate, and the other disconnected end is connected with the conducting block; the capacitor is connected with a heated gas production device.
The roller is positioned on the outer surface of the supporting cylinder body, when the packer is put into a well, the roller and the well wall roll in a friction mode, and the roller drives the gear to roll towards the direction of the slotted hole through the one-way gear; the distance that the gyro wheel rolled to transferring the point from the well head equals with gear revolve's distance, transfers to transferring the point department when packing the device, and the current conducting plate contacts with the conducting block, and trigger mechanism work and then triggers the gas production device that is heated and release gas.
The expansion mechanism comprises an annular cylinder; the pore canal in the middle of the annular cylinder body is used for a water supply pipe to pass through; the main body of the inner wall of the annular cylinder is of a hard structure, the outer wall of the annular cylinder is of an elastic structure, and the inner wall, the outer wall and the upper end and the lower end of the cylinder are closed to form an expansion space; the heated gas production device is positioned in the expansion space; pushing mechanisms are uniformly distributed between the inner wall and the outer wall of the annular cylinder body and comprise sliding blocks, pushing arms and connecting rods; one end of the sliding block is connected with the inner wall through a spring, the other end of the sliding block is connected with a pushing arm, and the pushing arm is in contact with the outer wall; one end of the sliding block, which is connected with the spring, is connected with one end of the connecting rod, and the part of the inner wall of the annular cylinder, which corresponds to the connecting rod, is of an elastic structure; the other end of the connecting rod props against the inner wall of the annular cylinder body and is inserted into a positioning hole formed in the outer wall of the water pipe.
Preferably, a through hole is formed in the middle of the supporting cylinder, and the water pipe penetrates through the through hole.
Preferably, a convex plate is arranged on the outer side of the front end of the supporting cylinder body; the trigger mechanism is arranged in the convex plate.
Preferably, the rotating shaft is rotatably connected with the inner wall of the convex plate through a bearing; one end of the screw is fixedly connected to the inner wall of the convex plate, the other end of the screw is provided with a gear, the inner diameter of the gear is provided with internal threads, and the gear is in threaded connection with the screw through the internal threads; a circle of slotted hole is formed in the inner wall of one end of the convex plate fixing screw rod and surrounds the screw rod, and the diameter of the slotted hole is larger than that of the screw rod.
Preferably, the eccentric position of the one-way gear is hinged with a straight tooth through a hinge pin, and a torsion spring is arranged on the hinge pin; a clamping plate is arranged on one side of the straight tooth; the one-way gear is provided with a limiting plate, and the bottom of the clamping plate is in contact with the limiting plate.
Preferably, the outer wall of the supporting cylinder body is provided with an air release valve; the supporting cylinder body is provided with a hoisting hole.
Preferably, the expansion mechanism is arranged in the middle of the support cylinder; four pushing mechanisms are uniformly distributed between the inner wall and the outer wall of the annular cylinder.
Preferably, the device comprises two packing devices and a telescopic water pipe; the telescopic water pipes are sleeved from outside to inside by a plurality of water pipes with gradually reduced pipe diameters; two groups of positioning holes are formed in the outer wall of the water pipe positioned on the outermost layer; the two packing devices are fixed on the outermost layer water pipe through inserting the connecting rod into the positioning hole; the one-way gears of the two packing devices are limited in opposite directions respectively.
The water collecting device is provided with a deep crack heat storage geothermal water-bearing layer sealing device, the upper end of the water pipe is provided with an upper convex part, and the lower end of the water pipe is provided with a lower convex part; the lower convex part at the lower end of each outer water pipe of the telescopic water pipe is contacted with the upper convex part at the upper end of the inner water pipe of the telescopic water pipe, and limit is formed; and thermal insulation material coatings are arranged on the inner wall and the outer wall of the telescopic water pipe.
The packing method adopting the water sampling device comprises the following steps:
1) adjusting the distance from the roller on the packing device adjacent to the extending end of the telescopic water pipe to the lowest end of the water level to be packed, which is rolled from the well mouth, to be equal to the rotating distance of the gear; and adjusting the roller of the other packer to roll from the wellhead to the lowest end of the required packer water level, and then pulling upwards to the last required packer water level by the same distance as the rotating distance of the gear.
2) Putting the extending end of the telescopic water pipe of the water collecting device downwards into a deep well needing water pumping; after entering the well, the packing device adjacent to the extending end of the telescopic water pipe enters the water level position needing to be packed below, the expansion mechanism of the packing device adjacent to the extending end of the telescopic water pipe starts to start, and the connecting rod of the packing device adjacent to the extending end of the telescopic water pipe is separated from the telescopic water pipe and used for packing the water level position.
3) And pulling the other packing device upwards to drive the telescopic water pipe to stretch and extend, and when the telescopic water pipe moves to the previous water level position to be packed, starting the expansion mechanism, disconnecting the connecting rod of the other packing device from the telescopic water pipe, and packing the previous water level position.
4) And (4) putting the water pump into the well, and pumping water of the next aquifer through the telescopic water pipe.
Compared with the prior art, the invention has the following beneficial effects:
the expansion mechanism of the device expands the rubber cylinder in a mode of generating gas through heating reaction, and props the rubber cylinder through the connecting rod and the top plate, so that the difficulty of deep well operation is reduced and more operations are reduced through the mode of generating gas through reaction, and the expansion is controlled without devices such as remote control and the like, so that the situations that remote control signals are not transmitted in place and the like are avoided, and a large amount of manpower and material resources are saved; the design of flexible pipe makes the packer transfer and becomes simple, withdraws the packing element through spring rebound effect during the pressure release, makes the operation of withdrawing of packer become simple, realizes the automatic operation of packer under deep well basically.
Drawings
FIG. 1 is a schematic diagram of an external structure of a packing apparatus according to an embodiment;
FIG. 2 is an isometric view of a packoff according to an embodiment;
FIG. 3 is a front view of a packoff according to an embodiment;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a partial enlarged view of FIG. 4 at B;
FIG. 6 is an enlarged view of a portion of FIG. 4 at C;
FIG. 7 is a view in the direction Q of FIG. 4;
FIG. 8 is a side view of the packing arrangement of the present embodiment;
FIG. 9 is a sectional view taken along line B-B of FIG. 8;
fig. 10 is a schematic structural view of the water sampling device according to the present embodiment;
FIG. 11 is a schematic view of the main structure of the telescopic water pipe;
FIG. 12 is an enlarged view of a portion of FIG. 11 at D;
FIG. 13 is an enlarged view of a portion of FIG. 11 at E;
FIG. 14 is a main structural view of a one-way gear according to the present embodiment;
FIG. 15 is a schematic diagram of the power line connection according to the present embodiment;
FIG. 16 is a diagram illustrating the effect of the water sampling apparatus of this embodiment when it is lowered;
FIG. 17 is a diagram illustrating the effect of the water sampling apparatus of this embodiment after packing;
fig. 18 is a block diagram illustrating steps of the packing method according to the present embodiment.
In the figure: 1-single packer, 2-through hole, 3-telescopic water pipe, 4-aquifer, 5-convex plate, 6-rubber cylinder, 7-hoisting hole, 8-roller, 9-connecting rod, 10-top plate, 11-slide block, 12-spring, 13-slide rail, 14-disc, 15-battery, 16-negative electrode wire, 17-positive electrode wire, 18-conductive plate, 19-slotted hole, 20-conductive block, 21-fixed hole, 22-capacitor, 23-reaction box, 24-rotating shaft, 25-one-way gear, 26-straight tooth, 27-gear, 28-screw rod, 29-upper convex part, 30-lower convex part, 32-hinge pin, 33-clamping plate, 34-limiting plate, 35-air release valve, 36-aqueous layer to be sequestered.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
Example 1
Referring to fig. 1 to 11 and fig. 14 and 15, the present embodiment provides a deep crack thermal storage geothermal water-bearing layer packer; in the figure, the packing device comprises a packer single body 1, a triggering mechanism and an expansion mechanism, wherein a through hole 2 is formed in the middle of the packer single body 1, and the through hole 2 is used for enabling a telescopic water pipe 3 to pass through; the rear end part of the packer single body 1 is provided with a hoisting hole 7.
A convex plate 5 is arranged on the outer side of the front end of the packer monomer 1, a battery 15 is arranged in the convex plate 5, and a negative electrode wire 16 and a positive electrode wire 17 are connected to the positive electrode and the negative electrode of the battery 15; the battery 15, the negative electrode wire 16 and the positive electrode wire 17 are all the existing batteries and wires; the triggering mechanism is also arranged in the convex plate 5, and the outer surfaces of the packer units 1 are all made of the existing heat-insulating, wear-resisting and hard materials; the expansion mechanism is arranged in the middle of the packer unit 1 and is linked with the trigger mechanism.
The trigger mechanism comprises a roller 8, a one-way gear 25, a gear 27 and a screw 28, the rotating shaft 24 is rotationally connected with the inner wall of the convex plate 5 through a bearing, and the roller 8 and the one-way gear 25 are connected with the rotating shaft 24 in a key way; a screw 28 is arranged in front of the rotating shaft 24, one end of the screw 28 is fixedly connected to the inner wall of the convex plate 5, a gear 27 is arranged at the other end of the screw, internal threads are arranged on the inner diameter of the gear 27, and the gear 27 is in threaded connection with the screw 28 through the internal threads; the gear 27 is meshed with the one-way gear 25, a circle of slotted holes 19 are formed on the inner wall of one end of the fixed screw 28 of the convex plate 5 around the screw 28, and the diameter of each slotted hole 19 is larger than that of the screw 28; the side of the gear 27 facing the slot 19 is provided with a conductive plate 18 which is matched with the slot 19; the inner wall of the slotted hole 19 is provided with a conductive block 20, the positive wire 17 extends into the slotted hole 19, the middle of the positive wire 17 is disconnected and is respectively connected with the conductive block 20 and the conductive plate 18, and when the conductive plate 18 enters the slotted hole 19, the conductive block 20 is contacted with the conductive plate 18 to communicate a circuit; one ends of the positive electrode wire 17 and the negative electrode wire 16, which are far away from the battery 15, enter the expansion mechanism, and the ends of the positive electrode wire and the negative electrode wire are connected through a capacitor 22, and the outer end of the capacitor 22 is coated with a reaction box 23; after conduction, the capacitor 22 starts to generate heat, and reacts with the thermal reaction agent placed inside the reaction cassette 23 to generate a large amount of gas, so that the expansion mechanism expands.
Because the roller 8 is positioned on the outer surface of the packer single body 1, when the packer is lowered into a well, the roller 8 rubs and rolls with the wall of the well, and the roller 8 drives the gear 27 to roll towards the direction of the slotted hole 19 through the one-way gear 25; the distance that the roller 8 rolls from the wellhead to the lowering point is set to be equal to the distance that the gear 27 rotates, when the packer is lowered to the lowering point, the conductive plate 18 and the conductive block 20 just contact, the circuit is completed, and the conduction of the gas is started.
The eccentric position of the one-way gear 25 is hinged with a straight tooth 26 through a hinge pin 32, and the hinge pin 32 is provided with a torsion spring. A clamping plate 33 is arranged on one side section of the straight tooth 26, and a limiting plate 34 is connected to the bottom of the clamping plate 33 in contact with the one-way gear 25.
A reaction agent which can react when heated is arranged in the reaction box 23, sodium azide can be adopted, and the reaction box 23 is a breathable reaction box; the reaction box 23 can adopt the existing ventilation box; the conductive plate 18 and the conductive block 20 are both made of the existing conductive material; the gear 27 and the screw 28 are made of insulating materials, and can be made of the existing insulating materials; the outer layers of the cathode wire 16 and the anode wire 17 are both provided with heat insulation coatings, and the existing heat insulation coating materials are adopted.
The expansion mechanism comprises an annular cylinder; a pore passage in the middle of the annular cylinder body is used for a water supply pipe to pass through; the main body of the inner wall of the annular cylinder body is of a hard structure, the outer wall of the annular cylinder body is an elastic rubber cylinder 6, and the inner wall, the outer wall and the upper end and the lower end of the cylinder body are closed to form an expansion space; the reaction cassette 23 is located in the expansion space; the upper end surface of the annular cylinder is called a disc 14; four sliding rails 13 are uniformly distributed on the disc 14, each sliding rail 13 is connected with a sliding block 11 in a sliding manner, the bottom of each sliding block 11 is connected with the inner wall of the annular cylinder through a spring 12, a top plate 10 is arranged at the upper end part of each sliding block 11, and each top plate 10 is in an arc shape; the outer ends of the top plates 10 are wrapped with rubber cylinders 6; one end of the sliding block 11, which is connected with the spring 12, is connected with one end of the connecting rod 9, and the part of the inner wall of the annular cylinder, which corresponds to the connecting rod 9, is of an elastic structure; the other end of the connecting rod 9 is inserted into a fixing hole 21 arranged on the outer wall of the telescopic water pipe 3 against the inner wall of the annular cylinder. When the rubber cylinder 6 expands, the sliding block 11, the connecting rod 9 and the top plate 10 are driven to extend outwards together, and plugging is achieved. And the rubber cylinder 6 is provided with a release valve 35 for taking out the plugging device after pressure relief.
Example 2
Reference is made to fig. 10-13 and to fig. 16 and 17; the embodiment provides a water sampling device with a deep crack heat storage geothermal water-bearing layer packer; the device comprises two packing devices and a telescopic water pipe 3; wherein the structure of the packing is the same as that described in example 1; the telescopic water pipes 3 are sleeved from outside to inside by a plurality of water pipes with gradually reduced pipe diameters; the upper end of each water pipe is provided with an upper convex part 29, and the lower end of each water pipe is provided with a lower convex part 30; the lower convex part 30 at the lower end of each outer water pipe of the telescopic water pipe 3 is contacted with the upper convex part 29 at the upper end of the inner water pipe thereof and forms a limit position; two groups of fixing holes 21 are arranged on the outer surface of the water pipe at the outermost side of the telescopic water pipe 3; each group of fixing holes 21 is four holes which are uniformly distributed, and each fixing hole 21 is matched with the connecting rod 9; the connecting rod 9 can extend into the fixing hole 21; the surface of the water pipe of the telescopic water pipe 3 is of a rough structure, and the telescopic end can overcome gravity and cannot be pulled open automatically when going downwards; the inner wall and the outer wall of the telescopic water pipe 3 are provided with heat insulation material coatings. The one-way gears 25 of the two packing devices are limited in opposite directions respectively.
Example 3
Referring to fig. 18, a method for sealing a deep fracture thermal storage geothermal water-bearing stratum by using the water collecting device of embodiment 2 comprises the following steps:
step one, installation and preparation; firstly, connecting two packing devices through a telescopic water pipe 3 to ensure that the telescopic water pipe 3 is in the shortest state, wherein two connecting rods 9 on the two packing devices extend into two corresponding groups of fixing holes 21, and one-way gears 25 in the two used packing devices are respectively limited in opposite directions; preparing a hoisting machine, and carrying the device to a position needing to be used;
step two, hoisting and preparing; the number of rolling circles of the roller 8 of the trigger mechanism is adjusted: the distance of the roller 8 on the packing device adjacent to the extending end of the telescopic water pipe 3 to roll from the well mouth to the lowest end of the required packing water level is adjusted to be equal to the rotating distance of the gear 27; the roller 8 of the other packer is adjusted to roll from the wellhead to the lowest end of the required packer level and then pulled upwards by 300 meters to the last required packer level by the same distance as the gear 27 on the packer rotates. Hoisting the connected packing device through a hoisting hole 7 and an upper port of the telescopic water pipe 3 by using a hoisting machine, wherein the extending end of the telescopic water pipe 3 faces downwards during hoisting, and hooking the water pipe of the innermost layer from the inside of the telescopic water pipe 3 by using a steel cable to slowly put the water pipe into a deep well needing water pumping in order to prevent the water pipe of the inner layer from falling off;
step three, entering a well; after entering the well, the well firstly enters a designated position, and the distance from the roller 8 on the packer adjacent to the extending end of the telescopic water pipe 3 to the lowest end of the water level required to be packed, which is rolled from the well mouth, is adjusted to be equal to the rotating distance of the gear 27; when the current-conducting plate 18 and the current-conducting block 20 reach the designated position, the contact circuit is connected, the capacitor 22 generates heat, so that the sodium azide in the reaction box 23 is subjected to thermal reaction and outgoes, the expansion mechanism on the packing device at the lower end expands, a large amount of gas is emitted after the expansion mechanism expands, the gas expands the rubber cylinder 6, the rubber cylinder 6 drives the connecting rod 9 and the sliding block 11 to move when expanding, and at the moment, the connecting rod 9 loosens the telescopic water pipe 3 to perform packing; and then the other packing device is pulled upwards, the telescopic water pipe 3 is stretched immediately, when the telescopic water pipe 3 moves to a position of three hundred meters, the telescopic water pipe 3 is fixed, and then an expansion mechanism of the upper packing device is started to perform plugging.
Step four, pumping water: at the moment, the two packer devices completely block one aquifer, the water pump is put into the well, and water in the aquifer at the lower section is pumped out through the telescopic water pipe 3, so that the water pumping work is completed.
Step five, collecting; and (3) lowering the casing pipe from the wellhead, unscrewing the air release valve 35 on the rubber cylinder 6, releasing the pressure, matching the connecting rod 9 with the fixed hole 21 again under the action of the spring 12, contracting the expansion device, and taking out the expansion device together with the telescopic water pipe 3.
The medicament content and the calculation process are explained as follows:
in the above formula
Taking the value of 300m for the length of the packing section, namely the thickness of the current water-containing layer to be packed;
the outer diameter and the inner diameter of a central pipe of the packer are respectively, the selected material is a No. 20 seamless steel pipe, the outer diameter is 114.3mm, and the thickness is 6.02 mm;
(ii) a Is calculated by
。
The upper type
I.e. water density value
；
Taking values for gravitational acceleration
(ii) a Calculated by substituting the above formula
。
To ensure sufficient setting capacity of the packer, i.e. to meet the dynamic friction force generated
And the packer is ensured not to slide. Wherein
Calculating the weight of the packer according to the weight of a seamless steel pipe of 300m, wherein the wall thickness is 6mm, and the theoretical weight of the steel pipe is 15.98 kg/m; value taking
(ii) a Coefficient of friction between well wall and rubber
(ii) a Thus, it is possible to provide
(ii) a Calculating according to the upper and lower ends of the packer respectively provided with 1.5m rubber cylinders, taking the contact area of the hole diameter of 127mm and the well wall,
namely the pressure required to be provided in the rubber cylinder,
；
calculated according to the reaction temperature of 300 ℃,
(ii) a Can be substituted to obtain
Calculated by substituting the formula, the required amount of the medicine is
。
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The deep crack heat storage geothermal water-bearing stratum packer is characterized by comprising a supporting cylinder body, wherein a triggering mechanism and an expansion mechanism are arranged on the supporting cylinder body;
the trigger mechanism comprises a roller (8), a one-way gear (25), a gear (27), a screw (28) and a power supply; the roller (8) and the one-way gear (25) are connected with the rotating shaft (24) in a key way; the gear (27) is connected with the screw rod (28); the gear (27) is meshed with the one-way gear (25), a circle of slotted hole (19) is arranged around the end part of the screw rod (28), and a conductive block (20) is arranged in the slotted hole (19); a conductive plate (18) matched with the conductive block (20) is arranged on one side of the gear (27) facing the slotted hole (19); two-stage wiring of the power supply, wherein two wiring end parts extend into the expansion mechanism and are connected with the capacitor (22); one of the connecting wires is of a disconnecting structure, one disconnected end is connected with the conducting plate (18), and the other disconnected end is connected with the conducting block (20); the capacitor (22) is connected with a heated gas production device;
the roller (8) is positioned on the outer surface of the supporting cylinder body, when the packer is put into a well, the roller (8) and the well wall roll in a friction mode, and the roller (8) drives the gear (27) to roll towards the direction of the slotted hole (19) through the one-way gear (25); the distance from the roller (8) to the lowering point through the well mouth is equal to the rotating distance of the gear (27), when the packing device is lowered to the lowering point, the conductive plate (18) is contacted with the conductive block (20), and the trigger mechanism works to trigger the heated gas production device to release gas;
the expansion mechanism comprises an annular cylinder; the pore canal in the middle of the annular cylinder body is used for a water supply pipe to pass through; the main body of the inner wall of the annular cylinder body is of a hard structure, the outer wall of the annular cylinder body is of an elastic structure, and the inner wall, the outer wall and the upper end and the lower end of the cylinder body are closed to form an expansion space; the heated gas production device is positioned in the expansion space; pushing mechanisms are uniformly distributed between the inner wall and the outer wall of the annular cylinder body and comprise sliding blocks (11), pushing arms and connecting rods (9); one end of the sliding block (11) is connected with the inner wall through a spring (12), the other end of the sliding block is connected with a pushing arm, and the pushing arm is in contact with the outer wall; one end of the sliding block (11) connected with the spring (12) is connected with one end of the connecting rod (9), and the part of the inner wall of the annular cylinder body corresponding to the connecting rod (9) is of an elastic structure; the other end of the connecting rod (9) is inserted into a positioning hole arranged on the outer wall of the water pipe against the inner wall of the annular cylinder.
2. The deep fracture thermal storage geothermal water-bearing layer packer according to claim 1, wherein a through hole (2) is provided in the middle of the support cylinder, and the water pipe passes through the through hole (2).
3. The deep fracture thermal storage geothermal water-containing layer packer according to claim 1, wherein a convex plate (5) is arranged outside the front end of the support cylinder; the trigger mechanism is arranged in the convex plate (5).
4. The deep crack thermal storage geothermal water-containing layer packer according to claim 3, wherein the rotating shaft (24) is rotatably connected with the inner wall of the convex plate (5) through a bearing; one end of the screw rod (28) is fixedly connected to the inner wall of the convex plate (5), a gear (27) is arranged at the other end of the screw rod, internal threads are arranged on the inner diameter of the gear (27), and the gear (27) is in threaded connection with the screw rod (28) through the internal threads; the inner wall of one end of the convex plate (5) for fixing the screw rod (28) is provided with a circle of slotted hole (19) around the screw rod (28), and the diameter of the slotted hole (19) is larger than that of the screw rod (28).
5. The deep crack thermal storage geothermal water-containing layer packer according to claim 1, wherein a straight tooth (26) is hinged at an eccentric position of the one-way gear (25) through a hinge pin (32), and a torsion spring is arranged on the hinge pin (32); a clamping plate (33) is arranged on one side of the straight tooth (26); a limiting plate (34) is arranged on the one-way gear (25), and the bottom of the clamping plate (33) is in contact with the limiting plate (34).
6. The deep fissure heat storage geothermal water-containing layer packer as claimed in claim 1, wherein the outer wall of the support cylinder is provided with a release valve (35); the supporting cylinder body is provided with a hoisting hole (7).
7. The deep fracture thermal storage geothermal water-containing layer packer of claim 1, wherein the expansion mechanism is disposed in a middle portion of the support cylinder; four pushing mechanisms are uniformly distributed between the inner wall and the outer wall of the annular cylinder.
8. A water sampling device with the deep fracture thermal storage geothermal water-containing layer packer as claimed in claim 5, characterized by comprising two packers and a telescopic water pipe (3); the telescopic water pipes are sleeved from outside to inside by a plurality of water pipes with gradually reduced pipe diameters; two groups of positioning holes are formed in the outer wall of the water pipe positioned on the outermost layer; the two packing devices are fixed on the outermost layer water pipe by inserting the connecting rod (9) into the positioning hole; the one-way gears (25) of the two packing devices are limited in opposite directions respectively.
9. The water sampling device with the deep crack thermal storage geothermal water-containing layer packer according to claim 8, wherein the water pipe is provided with an upper convex part (29) at the upper end and a lower convex part (30) at the lower end; the lower convex part (30) at the lower end of each outer water pipe of the telescopic water pipe (3) is contacted with the upper convex part (29) at the upper end of the inner water pipe thereof, and the limit is formed; and heat-insulating material coatings are arranged on the inner wall and the outer wall of the telescopic water pipe (3).
10. A packing method using the water collecting device as claimed in claim 8, comprising the steps of:
1) adjusting a roller (8) on a packing device adjacent to the extending end of the telescopic water pipe (3) to the lowest end of the packing water level required to roll from the wellhead to be equal to the rotating distance of the gear (27); adjusting a roller (8) of the other packing device to roll from the well mouth to the lowest end of the required packing water level, and then pulling upwards until the distance of the last required packing water level is equal to the rotating distance of the gear (27);
2) the extending end of a telescopic water pipe (3) of the water collecting device is downwards placed into a deep well needing water pumping; after entering the well, the packing device adjacent to the extending end of the telescopic water pipe (3) enters the lower water level position needing packing, the expansion mechanism of the packing device adjacent to the extending end of the telescopic water pipe (3) starts to start, and the connecting rod (9) of the packing device adjacent to the extending end of the telescopic water pipe (3) is separated from the telescopic water pipe (3) and packs the water level position;
3) then pulling the other packing device upwards and driving the telescopic water pipe (3) to stretch and extend, when the telescopic water pipe moves to the previous water level position to be packed, starting the expansion mechanism, disconnecting the connecting rod (9) of the other packing device from the telescopic water pipe (3) and packing the previous water level position;
4) and (3) putting the water pump into the well, and pumping water of the next aquifer through the telescopic water pipe (3).
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