Pipe-free extraction device for cross-layer drilling

Abstract

The invention discloses a layer-penetrating drilling pipe-free extraction device which comprises a push rod, a push pipe, a supporting device and plugging devices, the push rod penetrates through the push pipe, an extraction flow channel is formed between the push rod and the push pipe, and the plugging devices are installed at the outer end of the push rod and the outer end of the push pipe correspondingly. The supporting devices are arranged on the inner wall of a drill hole through the push rods and the plugging devices at the outer ends of the push rods, the multiple supporting devices are arranged in the direction of the drill hole, the plugging devices at the outer ends of the supporting devices and the supporting devices are controlled through the push rods to conduct plugging, the plugging devices at the outer ends of the push pipe controllers and the supporting devices conduct plugging, and therefore a pipe-free extraction area is formed. No-pipe extraction can be carried out through the extraction flow channel.

Description

Technical Field

[0001] The invention relates to the technical field of gas extraction, in particular to a through-layer drilling tubeless extraction device. Background Art

[0002] In the gas extraction method, the borehole is blocked by plugging technology, so that the borehole can be directly extracted, which can save a lot of costs. At present, in the process of pipeless extraction, the plugging method for the borehole is generally grouting plugging, which causes the plugging device to be fixed on the inner wall of the borehole. When the extraction area layer needs to be replaced later, it is not easy to adjust, and often requires complicated construction procedures, thereby reducing construction efficiency. In addition, the plugging device is difficult to recycle, resulting in a waste of resources.

[0003] Therefore, it is necessary to provide a through-layer drilling tubeless extraction device to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a through-layer drilling tubeless extraction device, comprising a push rod, a push tube, a support device and a plugging device, wherein the push rod passes through the push tube, and an extraction flow channel is formed between the push rod and the push tube, and the outer ends of the push rod and the push tube are respectively equipped with plugging devices, and the support device is arranged on the inner wall of the borehole through the push rod and the plugging device at the outer end of the push rod, and multiple support devices are arranged along the drilling direction;

[0005] The support device comprises an inner ring and an outer ring fixed concentrically, an annular cavity is formed between the inner ring and the outer ring, a column cavity connected to the annular cavity is provided in the outer ring, a sealing capsule 1 is provided on the outer ring surface of the outer ring, a through hole is provided in the sealing capsule 1, a channel 1 for connecting the sealing capsule 1 and the annular cavity is provided in the outer ring, a supporting top rod extending into the outer end of the column cavity and penetrating the through hole is provided, a receiving groove connected to the annular cavity is provided in the inner ring, and a sealing member is installed in the receiving groove;

[0006] The sealing device includes a sealing ring for installation with a push rod or a push tube, the sealing ring is provided with an annular groove, a docking plate corresponding to the sealing member is installed in the annular groove, a docking assembly for docking with the sealing member is installed in the docking plate, the sealing ring is also provided with control system 1 and control system 2 for controlling the docking assembly, and the outer ring surface of the sealing ring is also provided with a sealing bag 2.

[0007] Furthermore, the supporting top rod includes a sealing plug barrel that can be slidably extended into the column cavity, a sealing cavity 1 is formed between the sealing plug barrel and the column cavity, a sliding rod is slidably extended into the outer tube mouth of the sealing plug barrel, and the sliding rod is connected to the bottom of the sealing plug barrel cavity by a spring.

[0008] Furthermore, a rough head is installed on the outer end of the sliding rod.

[0009] Furthermore, the sealing member comprises a docking seat installed in the accommodating groove, a through pipe communicating with the annular cavity is provided at the outer end of the docking seat, a docking groove is opened at the inner end of the docking seat, and a sealing plug connected with the through pipe is installed at the bottom of the docking groove.

[0010] Furthermore, a cylindrical groove corresponding to the docking groove is provided in the docking plate, and the docking assembly includes a spacer ring and a conduit, the spacer ring is fixed in the cylindrical groove, a slidable sleeve is installed in the cylindrical groove outside the spacer ring, the conduit can slide through the spacer ring and the sleeve respectively, a sealing cone nozzle for docking with a sealing plug nozzle is installed at the outer end of the conduit, and a sealing chamber 2 is formed between the sleeve and the spacer ring, and a sealing chamber 3 is formed between the spacer ring and the cylindrical groove inside the spacer ring, the control system 1 is connected to the sealing chamber 2, the control system 2 is connected to the sealing chamber 3, and the length of the sleeve is greater than the groove depth of the docking groove.

[0011] Furthermore, the docking plate includes a plurality of sector-shaped blocks that are butt-connected, and semi-cylindrical grooves are respectively provided on both sides of the sectors of the sector-shaped blocks, and the butt-connected semi-cylindrical grooves form cylindrical grooves.

[0012] Furthermore, the fan-shaped block is provided with a channel five for connecting the circumferentially adjacent sealing chambers two on the docking plate, the sealing ring is provided with a channel two for connecting the axially adjacent sealing chambers two on the sealing ring, and the control system one includes a control pump one installed on the sealing ring and connected to the channel two.

[0013] Furthermore, the blocking ring is provided with a channel four for connecting the sealing capsule two with the channel two.

[0014] Furthermore, the fan-shaped block is provided with a channel six for connecting the circumferentially adjacent sealing chambers three on the docking plate, the sealing ring is provided with a channel three for connecting the axially adjacent sealing chambers three on the sealing ring, and the control system two includes a control pump two installed on the sealing ring and connected to the channel three.

[0015] Furthermore, an elastic pad is provided between the sealing bag 1 and the outer ring.

[0016] Compared with the prior art, the present invention provides a through-layer drilling tubeless extraction device, which has the following beneficial effects:

[0017] The present invention adopts the structural design of the push rod, push tube, support device and sealing device. On the one hand, it can be arranged according to the softness and strength of the wall texture structure of the through-layer borehole, and on the other hand, it can be arranged according to the required tubeless extraction points along different layers of the through-layer borehole. The plugging device and the support device at the outer end are controlled by the push rod to seal, and the plugging device and the support device at the outer end of the push tube controller are sealed, so as to form a tubeless extraction area. Tubeless extraction can be carried out through the extraction flow channel, so that different layers in the through-layer borehole can be flexibly extracted, and the sealing control is flexible, convenient and efficient. At the same time, the setting of the support device ensures that the borehole is well reinforced, thereby ensuring the safety during the extraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the tubeless extraction device of the present invention;

[0019] Figure 2 It is a schematic diagram of the local structure of the tubeless extraction device of the present invention;

[0020] Figure 3 It is a schematic diagram of the through hole structure of the present invention;

[0021] Figure 4 for Figure 2 Schematic diagram of local structure;

[0022] Figure 5 It is a schematic diagram of the structure of the blocking device of the present invention;

[0023] Figure 6 It is a schematic diagram of the docking plate structure of the present invention;

[0024] In the figure: 1, push rod; 2, push tube; 3, extraction flow channel; 4, drilling hole; 5, support device; 6, plugging device; 51, inner ring; 52, outer ring; 53, sealing bag 1; 54, elastic pad; 55, support top rod; 56, sealing member; 511, ring cavity; 512, accommodating groove; 513, channel 1; 521, column cavity; 5211, sealing cavity 1; 531, through hole; 551, sealing plug cylinder; 552, sliding rod; 553, spring; 5521, rough head; 561, docking seat; 562, through pipe; 563, sealing plug nozzle; 564, docking Groove; 61, sealing ring; 62, docking plate; 63, docking assembly; 64, control system one; 65, control system two; 66, sealing capsule two; 611, ring groove; 612, channel two; 613, channel three; 614, channel four; 621, fan-shaped block; 622, semi-cylindrical groove; 623, channel five; 624, channel six; 625, cylindrical groove; 631, spacer ring; 632, sleeve; 633, catheter; 6331, sealing cone nozzle; 6251, sealing chamber two; 6252, sealing chamber three; 641, control pump one; 651, control pump two. DETAILED DESCRIPTION

[0025] Reference Figure 1-6 The present invention provides a technical solution: a through-layer drilling tubeless extraction device, comprising a push rod 1, a push tube 2, a support device 5 and a plugging device 6, wherein the push rod 1 is arranged through the push tube 2, and an extraction flow channel 3 is formed between the push rod 1 and the push tube 2, and the outer ends of the push rod 1 and the push tube 2 are respectively installed with the plugging device 6, and the support device 5 is arranged on the inner wall of the borehole 4 through the push rod 1 and the plugging device 6 at the outer end of the push rod 1, and a plurality of support devices 5 are arranged along the direction of the borehole 4; wherein, on the one hand, according to the softness strength of the wall texture structure of the through-layer drilling hole, on the other hand, According to the required tubeless extraction points in different layers along the through-layer borehole, support devices with appropriate intervals and numbers are arranged, and the plugging device at the outer end is controlled by the push rod to seal with the support device, and the plugging device at the outer end of the push tube controller is sealed with the support device, thereby forming a tubeless extraction area, and tubeless extraction can be carried out through the extraction flow channel, so that different layers in the through-layer borehole can be flexibly extracted, and the sealing control is flexible, convenient and efficient. The setting of the support device, at the same time, makes the borehole well reinforced, ensuring the safety during the extraction process.

[0026] The support device 5 comprises an inner ring 51 and an outer ring 52 which are fixed concentrically, an annular cavity 511 is formed between the inner ring 51 and the outer ring 52, a column cavity 521 which is connected to the annular cavity 511 is provided in the outer ring 52, a sealing capsule 53 is provided on the outer ring surface of the inner ring 51, a through hole 531 is provided in the sealing capsule 53, a channel 513 which is used to connect the sealing capsule 53 and the annular cavity 511 is provided in the outer ring 52, a supporting top rod 55 which extends into the outer end of the column cavity 521 and passes through the through hole 531, a receiving groove 512 which is connected to the annular cavity 511 is provided in the inner ring 51, a sealing member 56 is installed in the receiving groove 512; wherein, the column cavity is radially arranged, and a plurality of them are evenly arranged on the outer wall of the outer ring;

[0027] The sealing device 6 includes a sealing ring 61 for installation with the push rod 1 or the push tube 2, and the sealing ring 61 is provided with an annular groove 611, and a docking plate 62 corresponding to the sealing member 56 is installed in the annular groove 611, and a docking assembly 63 for docking with the sealing member 56 is installed in the docking plate 62, and the sealing ring 61 is also provided with a control system 1 64 and a control system 2 65 for controlling the docking assembly 63, and the outer ring surface of the sealing ring 61 is also provided with a sealing bag 2 66; wherein, when the control system 1 and the control system 2 are started, the docking assembly is controlled to dock with the sealing member, and the supporting push rod is controlled to support the borehole wall, and at the same time, the sealing bag 1 is pressurized and expanded, so that the supporting device is reinforced on the borehole wall, and when the docking assembly is separated from the seal, the seal can seal and maintain the pressure of the sealing bag 1 and the annular cavity, and if the pressure of the sealing bag 1 and the annular cavity needs to be adjusted, the docking is carried out through the docking assembly and the seal, and the control system 1 and the control system 2 can be used for regulation.

[0028] In this embodiment, the supporting top rod 55 includes a sealing plug tube 551 which can be slidably extended into the column cavity 521, a sealing cavity 5211 is formed between the sealing plug tube 551 and the column cavity 521, a sliding rod 552 is slidably extended into the outer tube mouth of the sealing plug tube 551, and the sliding rod 552 is connected to the bottom of the tube cavity of the sealing plug tube 551 through a spring 553; through the combined structure of the spring and the sealing capsule 1, the supporting device has good supporting strength and good buffering effect.

[0029] In this embodiment, a rough head 5521 is installed at the outer end of the sliding rod 552 to improve the retention effect with the wall of the drilled hole.

[0030] In this embodiment, the sealing member 56 includes a docking seat 561 installed in the accommodating groove 521, the outer end of the docking seat 561 is provided with a through pipe 562 connected to the annular cavity 511, the inner end of the docking seat 561 is provided with a docking groove 564, and the bottom of the docking groove 564 is provided with a sealing plug 563 connected to the through pipe 562; wherein, when the sealing plug is pushed open, the sealing plug is connected to the through pipe, and when the sealing plug is not pushed open, the sealing plug seals the through pipe; and in this embodiment, when the sealing plug and the sealing cone are subjected to a great negative pressure, the sealing plug and the sealing cone can conduct air in reverse so as to release the pressure of the sealing bag 1 and the sealing cavity 1, so that the supporting device can be disassembled for recycling.

[0031] In this embodiment, a cylindrical groove 625 corresponding to the docking groove 564 is provided in the docking plate 62, and the docking assembly 63 includes a spacer ring 631 and a guide tube 633. The spacer ring 631 is fixed in the cylindrical groove 62, and a slidable sleeve 632 is installed in the cylindrical groove 625 outside the spacer ring 631. The guide tube 633 can slide through the spacer ring 631 and the sleeve 632 respectively. A sealing cone nozzle 6331 for docking with the sealing plug nozzle 563 is installed at the outer end of the guide tube 633, and a sealing chamber 2 6251 is formed between the sleeve 632 and the spacer ring 631, and a sealing chamber 3 6252 is formed between the spacer ring 631 and the cylindrical groove 625 inside the spacer ring 631. The control system 1 64 It is connected to the sealing chamber two 6251, the control system two 65 is connected to the sealing chamber three 6252, and the length of the sliding sleeve 632 is greater than the groove depth of the docking groove 564, wherein the sealing cone mouth is configured so that after the sealing cone mouth is subjected to a certain pressure value, the sealing cone mouth begins to be opened, that is, when the pressure in the sealing chamber three reaches a certain pressure value, the sealing cone mouth begins to be opened, and when the pressure in the sealing chamber three is lower than a certain pressure value, as the pressure in the sealing chamber three increases, the catheter moves toward the direction of the sealing plug nozzle, and the sealing cone mouth is fully matched with the sealing cone mouth; wherein, the catheter and the sealing chamber three are also connected by a reset spring one, and the sliding sleeve and the spacer ring are also connected by a reset spring two.

[0032] In this embodiment, the docking plate 62 includes a plurality of butt-connected sector blocks 621 , and semi-cylindrical grooves 622 are respectively provided on both sides of the sectors of the sector blocks 621 , and the butt-connected semi-cylindrical grooves 622 form cylindrical grooves 625 .

[0033] In this embodiment, the fan-shaped block 621 is provided with a channel five 623 for connecting the circumferentially adjacent sealing chambers 6251 on the docking plate 62, the sealing ring 61 is provided with a channel two 612 for connecting the axially adjacent sealing chambers 6251 of the sealing ring 61, and the control system one 64 includes a control pump one 641 installed on the sealing ring 61 and connected to the channel two 612.

[0034] In this embodiment, the blocking ring 61 is provided with a channel 4 614 for connecting the sealing bag 2 66 with the channel 2 612 .

[0035] In this embodiment, the fan-shaped block 621 is provided with a channel six 624 for connecting the circumferentially adjacent sealing chambers three 6252 on the docking plate 62, the sealing ring 61 is provided with a channel three 613 for connecting the axially adjacent sealing chambers three 6252 of the sealing ring 61, and the control system two 65 includes a control pump two 651 installed on the sealing ring 61 and connected to the channel three 613.

[0036] In this embodiment, an elastic pad 54 is provided between the sealing bag 1 53 and the outer ring 52 .

[0037] In specific implementation, it includes the following steps:

[0038] S1: Determine the appropriate spacing and number of support devices according to the softness strength of the hole wall texture structure of the through-layer drill hole and the required tubeless extraction points in different layers of the through-layer drill hole;

[0039] S2: The plugging device and the supporting device at the outer end are assembled by controlling the push rod. Specifically, the pressure in the sealing chamber 2 is controlled by the control system 1, so that the sliding sleeve is docked with the docking groove, so that the supporting device is assembled on the plugging device on the push rod. After the supporting device is guided into the position required to be installed on the inner wall of the borehole by the push rod, the pressure in the sealing chamber 3 is controlled by the control system 2, so that the catheter drives the sealing cone nozzle to dock with the sealing plug nozzle, and continuously pressurizes the sealing chamber 1, so that the supporting push rod pushes against the borehole wall, and the sealing bag 1 is pressurized and expanded. After completion, the control system 2 quickly reduces the pressure in the sealing chamber 3, and the catheter is separated from the sealing cone nozzle and the sealing plug nozzle under the action of the reset spring 1. The control system 1 repeatedly quickly reduces the pressure in the sealing chamber 2, and the sliding sleeve is separated from the docking groove under the action of the reset spring 2, thereby completing the support and fixation of the supporting device, and all the supporting devices are installed on the inner wall of the borehole in sequence;

[0040] S3: According to the area layer to be extracted, the plugging device and the supporting device at the outer end are controlled by the push rod to be plugged, and the plugging device and the supporting device at the outer end of the push tube controller are plugged to form a tubeless extraction area, and tubeless extraction can be performed through the extraction flow channel. If the extraction area layer needs to be changed, the plugging device can be quickly separated from the supporting device by controlling the plugging device, and the corresponding supporting device is matched again according to the new extraction area layer to perform extraction;

[0041] S4: After the extraction is completed, the support device is disassembled. Specifically, control system 1 controls the plugging device to dock and seal with the support device, and controls system 2 to perform negative pressure treatment on sealing chamber 3 until the sealing plug nozzle and the sealing cone nozzle can reversely guide air, thereby reducing the pressure of sealing bag 1 and sealing chamber 1, so that a gap is formed between the support device and the inner wall of the borehole, and the support device is disassembled.

[0042] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the invention, which should be covered by the protection scope of the present invention.

Claims

1. A through-layer drilling tubeless extraction device, comprising a push rod (1), a push tube (2), a support device (5) and a plugging device (6), characterized in that: The push rod (1) is arranged to penetrate the push tube (2), and a pumping flow channel (3) is formed between the push rod (1) and the push tube (2). The outer ends of the push rod (1) and the push tube (2) are respectively provided with a plugging device (6). The support device (5) is arranged on the inner wall of the borehole (4) through the push rod (1) and the plugging device (6) at the outer end of the push rod (1), and a plurality of support devices (5) are arranged along the direction of the borehole (4); The support device (5) comprises an inner ring (51) and an outer ring (52) which are fixed concentrically, an annular cavity (511) being formed between the inner ring (51) and the outer ring (52), a column cavity (521) being provided in the outer ring (52) and communicating with the annular cavity (511), a sealing capsule (53) being provided on the outer ring surface of the outer ring (52), a through hole (531) being provided in the sealing capsule (53), a channel (513) being provided in the outer ring (52) for communicating the sealing capsule (53) with the annular cavity (511), a supporting top rod (55) extending from the outer end of the column cavity (521) and penetrating the through hole (531), a receiving groove (512) being provided in the inner ring (51) and communicating with the annular cavity (511), a sealing member (56) being installed in the receiving groove (512); The blocking device (6) comprises a blocking ring (61) for installation with the push rod (1) or the push tube (2); the blocking ring (61) is provided with an annular groove (611); a docking plate (62) corresponding to the sealing member (56) is installed in the annular groove (611); a docking assembly (63) for docking with the sealing member (56) is installed in the docking plate (62); the blocking ring (61) is also provided with a control system 1 (64) and a control system 2 (65) for controlling the docking assembly (63); and a sealing capsule 2 (66) is also provided on the outer annular surface of the blocking ring (61).

2. A through-layer drilling tubeless extraction device according to claim 1, characterized in that: The supporting top rod (55) comprises a sealing plug barrel (551) which is slidably inserted into the column cavity (521); a sealing cavity 1 (5211) is formed between the sealing plug barrel (551) and the column cavity (521); a sliding rod (552) is slidably inserted into the outer cylinder mouth of the sealing plug barrel (551); the sliding rod (552) is connected to the bottom of the cylinder cavity of the sealing plug barrel (5551) via a spring (553).

3. A through-layer drilling tubeless extraction device according to claim 2, characterized in that: A rough head (5521) is mounted on the outer end of the sliding rod (552).

4. A through-layer drilling tubeless extraction device according to claim 1, characterized in that: The sealing member (56) comprises a docking seat (561) installed in the accommodating groove (521); a through pipe (562) communicating with the annular cavity (511) is provided at the outer end of the docking seat (561); a docking groove (564) is provided at the inner end of the docking seat (561); a sealing plug (563) connected to the through pipe (562) is installed at the bottom of the docking groove (564).

5. A through-layer drilling tubeless extraction device according to claim 4, characterized in that: The docking plate (62) is provided with a cylindrical groove (625) corresponding to the docking groove (564); the docking assembly (63) comprises a spacer ring (631) and a guide tube (633); the spacer ring (631) is fixed in the cylindrical groove (62); a slidable sleeve (632) is installed in the cylindrical groove (625) outside the spacer ring (631); the guide tube (633) can slidably penetrate the spacer ring (631) and the sleeve (632); the outer end of the guide tube (633) is provided with a guide tube for connecting with the sealing plug nozzle (564); 63) is connected to a sealing cone nozzle (6331) and a sealing chamber 2 (6251) is formed between the sliding sleeve (632) and the spacer ring (631), a sealing chamber 3 (6252) is formed between the spacer ring (631) and the cylindrical groove (625) on the inner side of the spacer ring (631), the control system 1 (64) is connected to the sealing chamber 2 (6251), the control system 2 (65) is connected to the sealing chamber 3 (6252), and the length of the sliding sleeve (632) is greater than the groove depth of the docking groove (564).

6. A through-layer drilling tubeless extraction device according to claim 5, characterized in that: The docking plate (62) comprises a plurality of butt-connected sector blocks (621), with semi-cylindrical grooves (622) respectively provided on both sides of the sector of the sector block (621), and the butt-connected semi-cylindrical grooves (622) forming a cylindrical groove (625).

7. A through-layer drilling tubeless extraction device according to claim 6, characterized in that: The sector block (621) is provided with a channel five (623) for connecting circumferentially adjacent sealing chambers two (6251) on the docking plate (62), the sealing ring (61) is provided with a channel two (612) for connecting axially adjacent sealing chambers two (6251) of the sealing ring (61), and the control system one (64) comprises a control pump one (641) mounted on the sealing ring (61) and connected to the channel two (612).

8. A through-layer drilling tubeless extraction device according to claim 7, characterized in that: The blocking ring (61) is provided with a channel four (614) for connecting the sealing capsule two (66) with the channel two (612).

9. A through-layer drilling tubeless extraction device according to claim 6, characterized in that: The fan-shaped block (621) is provided with a channel six (624) for connecting circumferentially adjacent sealing chambers three (6252) on the docking plate (62), the sealing ring (61) is provided with a channel three (613) for connecting axially adjacent sealing chambers three (6252) of the sealing ring (61), and the control system two (65) includes a control pump two (651) installed on the sealing ring (61) and connected to the channel three (613).

10. The through-layer drilling tubeless extraction device according to claim 1, characterized in that: An elastic pad (54) is provided between the sealing bag 1 (53) and the outer ring (52).

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