Wellbore tubular assembly and method of installing same

Abstract

The application discloses a well pipe assembly and a mounting method thereof. The well pipe assembly comprises a well pipe, a leveling mechanism, and a plurality of scrapers arranged on the side wall of the mounting seat. The plurality of scrapers are arranged along the circumference of the well pipe. The bottom of the mounting seat is provided with a plurality of mounting holes. The plurality of mounting holes are arranged along the circumference of the well pipe. A cleaning unit is arranged in each mounting hole. The cleaning unit comprises an elastic member arranged in the mounting hole and a cleaning member connected to the lower end of the elastic member. The cleaning member extends from below the mounting hole and can be accommodated in the mounting hole under pressure. When the mounting seat contacts the bottom wall of the well pipe, the obstacles can be swept away, and the obstacles can be prevented from affecting the perpendicularity of the well pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of water intake structures, and in particular to a well pipe assembly and an installation method thereof. Background Art

[0002] Currently, there are various methods for artificial dewatering of foundation pits, including light wellpoint dewatering, jet wellpoint dewatering, electroosmosis wellpoint dewatering, and pipe wellpoint dewatering. Among them, pipe wellpoint dewatering, as a dewatering technology characterized by its convenient construction, mature technology, and significant effectiveness, has been widely used in foundation pit projects, achieving excellent dewatering results, meeting construction needs, and generating significant social and economic benefits.

[0003] During the construction of the well pipe, there is a procedure to lower the well pipe into the pipe well. However, if Figure 1 As shown, there may be obstacles 11 (such as accumulated soil) at the bottom of some pipe wells 10. When the well pipe is placed in, the verticality of the well pipe is difficult to ensure. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a well pipe assembly that can improve the problem of difficulty in ensuring verticality after installation.

[0005] The present invention also provides a method for installing the well pipe assembly.

[0006] According to the first aspect of the present invention, the well pipe assembly includes: a well pipe; a leveling mechanism, the leveling mechanism includes a mounting seat fixedly connected to the bottom end of the well pipe, and a plurality of scrapers arranged on the side walls of the mounting seat, the plurality of scrapers are arranged at intervals along the circumference of the well pipe, the bottom of the mounting seat is provided with a plurality of mounting holes, the plurality of mounting holes are arranged at intervals along the circumference of the well pipe, a cleaning unit is provided in each of the mounting holes, the cleaning unit includes an elastic member arranged in the mounting hole, and a cleaning member connected to the lower end of the elastic member, the cleaning member extends from the bottom of the mounting hole, and the cleaning member can be received in the mounting hole under pressure.

[0007] The well pipe assembly according to the embodiment of the present invention has at least the following beneficial effects:

[0008] When installing the well pipe assembly of the present invention, first, the well pipe assembly is gradually lowered into the pipe well until the leveling mechanism contacts the obstacle at the bottom of the pipe well; then, the well pipe assembly is rotated to make the scraper scrape the obstacle, so that the obstacle can be scraped away, so that the well pipe assembly can be further lowered, and in the process of rotating the well pipe assembly, the cleaning member can also clean the obstacle under the mounting seat; finally, when the obstacle under the mounting seat is scraped away and the obstacle directly under the mounting seat is cleaned, the well pipe assembly can be further lowered, and as the mounting seat gradually descends, the cleaning member can be squeezed by the bottom wall of the pipe well and retracted into the mounting hole; finally, when the mounting seat contacts the bottom wall of the pipe well, since the obstacle has been swept away, it can be avoided that the obstacle affects the verticality of the well pipe.

[0009] According to some embodiments of the present invention, the scraper is arranged at an angle.

[0010] According to some embodiments of the present invention, the mounting seat is a hollow structure, and the mounting seat is sleeved on the bottom end of the well pipe, the bottom end of the mounting seat has an opening communicating with the interior of the mounting seat, and the side wall of the mounting seat is provided with a suction port communicating with the interior of the mounting seat;

[0011] A filter screen is provided inside the well pipe and is located above the suction port.

[0012] According to some embodiments of the present invention, a bearing platform is provided inside the mounting seat, the bottom end of the well pipe is provided on the bearing platform, and the bearing platform is located above the suction port.

[0013] According to some embodiments of the present invention, the well pipe comprises a sand settling pipe section, a water permeable pipe section, and a support pipe section sequentially connected from bottom to top, and the inner diameter of the water permeable pipe section gradually increases from bottom to top;

[0014] A sealing plate is detachably provided inside the water-permeable pipe section. The sealing plate is provided with a through hole for an air supply pipe to pass through. The air pipe is used to be connected to an air pump.

[0015] According to some embodiments of the present invention, the cleaning member includes a slider movably connected in the mounting hole and connected to the bottom end of the elastic member, and a brush arranged below the slider.

[0016] According to some embodiments of the present invention, a support column is provided at the bottom of the slider.

[0017] According to some embodiments of the present invention, the bottom end of each mounting hole further has a receiving groove arranged around the bottom end of the mounting hole.

[0018] According to some embodiments of the present invention, the bottom end surface of the mounting seat is a planar structure.

[0019] A method for installing a well pipe assembly according to a second embodiment of the present invention includes:

[0020] Gradually lowering the well pipe assembly into the pipe well until the leveling mechanism contacts the obstruction at the bottom of the pipe well;

[0021] Rotate the well pipe assembly so that the scraper scrapes against the obstacle and the cleaning member cleans the obstacle below the mounting seat;

[0022] While obstacles below the mounting seat are being cleared, the well pipe assembly is further lowered so that the well pipe assembly contacts the bottom wall of the pipe well.

[0023] The installation method of the well pipe assembly according to the embodiment of the present invention has at least the following beneficial effects:

[0024] When installing the well pipe assembly of the present invention, first, the well pipe assembly is gradually lowered into the pipe well until the leveling mechanism contacts the obstacle at the bottom of the pipe well; then, the well pipe assembly is rotated to make the scraper scrape the obstacle, so that the obstacle can be scraped away, so that the well pipe assembly can be further lowered, and in the process of rotating the well pipe assembly, the cleaning member can also clean the obstacle under the mounting seat; finally, when the obstacle under the mounting seat is scraped away and the obstacle directly under the mounting seat is cleaned, the well pipe assembly can be further lowered, and as the mounting seat gradually descends, the cleaning member can be squeezed by the bottom wall of the pipe well and retracted into the mounting hole; finally, when the mounting seat contacts the bottom wall of the pipe well, since the obstacle has been swept away, it can be avoided that the obstacle affects the verticality of the well pipe.

[0025] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0027] Figure 1 This is a schematic diagram of the structure of the tube well;

[0028] Figure 2 This is a schematic structural diagram of a well pipe assembly according to an embodiment of the present invention;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic diagram of a partial cross-sectional structure of a well pipe assembly according to an embodiment of the present invention;

[0031] Figure 5 for Figure 4 A partial enlarged view of the

[0032] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0033] Figure 7 A schematic diagram of the partial structure of a leveling mechanism according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic structural diagram of a cleaning unit according to an embodiment of the present invention.

[0035] Figure Number:

[0036] 10. Tube well; 11. Obstacles;

[0037] 100. Well pipe assembly; 110. Well pipe; 111. Sand settling pipe section; 112. Permeable pipe section; 113. Support pipe section; 120. Leveling mechanism; 121. Mounting seat; 1211. Mounting hole; 1212. Suction port; 1213. Support platform; 1214. Accommodation groove; 122. Scraper; 123. Cleaning unit; 1231. Elastic member; 1232. Cleaning member; 12321. Slider; 12322. Brush; 1233. Pillar; 130. Filter screen; 140. Sealing plate; 141. Through hole. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] like Figure 2 As shown, a well pipe assembly 100 according to an embodiment of the present invention includes a well pipe 110 and a leveling mechanism 120 .

[0042] Combine Figure 2 and Figure 3 The leveling mechanism 120 is arranged below the well pipe 110. The leveling mechanism 120 includes a mounting seat 121 fixedly connected to the bottom end of the well pipe 110, and a plurality of scrapers 122 arranged on the side wall of the mounting seat 121. The plurality of scrapers 122 are arranged at intervals along the circumference of the well pipe 110.

[0043] Among them, the mounting seat 121 can be fixed to the bottom end of the well pipe 110 by welding or bonding. Of course, the mounting seat 121 can also be fixed to the bottom end of the well pipe 110 by means of fasteners such as screws or clips; multiple scrapers 122 are arranged on the side wall of the mounting seat 121 at intervals along the circumference of the well pipe 110; when the well pipe 110 is operated to rotate, the mounting seat 121 rotates with the well pipe 110 and drives the scrapers 122 to rotate.

[0044] like Figure 7 As shown, the bottom of the mounting seat 121 is provided with a plurality of mounting holes 1211, and the plurality of mounting holes 1211 are arranged at intervals along the circumference of the well pipe 110; Figure 5 and Figure 6 A cleaning unit 123 is provided in each mounting hole 1211. The cleaning unit 123 includes an elastic member 1231 provided in the mounting hole 1211 and a cleaning member 1232 connected below the elastic member 1231. The cleaning member 1232 extends from below the mounting hole 1211 and can be received in the mounting hole 1211 under pressure.

[0045] Specifically, mounting hole 1211 is a blind hole that passes through the bottom of mounting seat 121. Elastic member 1231 is disposed within mounting hole 1211. The upper end of elastic member 1231 is connected to mounting seat 121, and the lower end of elastic member 1231 is connected to cleaning member 1232. When well pipe assembly 100 is suspended vertically, cleaning member 1232 extends from below mounting hole 1211. When cleaning member 1232 is subjected to upward pressure, it squeezes elastic member 1231 and is retracted into mounting hole 1211. When operating well pipe 110, mounting seat 121 rotates along with well pipe 110, driving cleaning member 1232 to rotate as well.

[0046] When installing the well pipe assembly 100 of the present invention, first, the well pipe assembly 100 is gradually lowered into the pipe well 10 until the leveling mechanism 120 contacts the obstacle 11 at the bottom of the pipe well 10; then, the well pipe assembly 100 is rotated so that the scraper 122 scrapes the obstacle 11, thereby scraping off the obstacle 11 so that the well pipe assembly 100 can be further lowered. In addition, during the rotation of the well pipe assembly 100, the cleaning member 1232 can also clean the obstacle 11 below the mounting seat 121. ; Finally, when the obstacle 11 under the mounting seat 121 is scraped away and the obstacle 11 directly under the mounting seat 121 is cleaned, the well pipe assembly 100 can be further lowered, and as the mounting seat 121 gradually descends, the cleaning piece 1232 can be squeezed by the bottom wall of the pipe well 10 and retracted into the mounting hole 1211; finally, when the mounting seat 121 contacts the bottom wall of the pipe well 10, since the obstacle 11 has been swept away, the obstacle 11 can be prevented from affecting the verticality of the well pipe 110.

[0047] It should be noted that when the mounting seat 121 contacts the bottom wall of the pipe well 10, the cleaning piece 1232 is squeezed and retracted into the mounting hole 1211, thereby preventing the cleaning piece 1232 from affecting the verticality of the well pipe 110.

[0048] The bottom end surface of the mounting base 121 is a flat structure, so that the verticality of the well pipe 110 can be further improved.

[0049] like Figure 7 As shown, in some embodiments, the scraper 122 is disposed at an angle.

[0050] Specifically, the angle between each scraper 122 and the horizontal plane is between 25° and 60°, so that the scraper 122 can more conveniently scrape away the obstacles 11 around it.

[0051] like Figure 3 、 Figure 7As shown, in some embodiments, the mounting seat 121 is a hollow structure, the mounting seat 121 is sleeved on the bottom end of the well pipe 110, and the bottom end of the mounting seat 121 has an opening connected to the interior of the mounting seat 121, and the side wall of the mounting seat 121 is provided with a suction port 1212 connected to the interior of the mounting seat 121.

[0052] like Figure 4 As shown, a filter screen 130 is provided inside the well pipe 110 , and the filter screen 130 is located above the suction port 1212 .

[0053] It can be understood that during the installation of the well pipe assembly 100, an air pump can be used to evacuate the interior of the well pipe 110. In this way, after the well pipe assembly 100 is rotated to scrape the obstacle 11, the obstacle 11 can be sucked into the interior of the mounting seat 121 through the suction port 1212. In this way, it is possible to avoid the problem of all obstacles 11 being accumulated around the outer periphery of the mounting seat 121, making it difficult to scrape off the obstacles 11. After the obstacle 11 is drawn into the interior of the mounting seat 121, the filter screen 130 can act as an obstruction to prevent the obstacle 11 from being sucked out through the well pipe 110.

[0054] It should be noted that the filter screen 130 also plays a filtering role. When the well pipe assembly 100 is installed and used, the filter screen 130 can filter sludge and reduce the risk of water inside the well pipe 110 being contaminated.

[0055] Combine Figure 5 and Figure 6 Furthermore, a bearing platform 1213 is provided inside the mounting seat 121 , and the bottom end of the well pipe 110 is provided on the bearing platform 1213 , and the bearing platform 1213 is located above the suction port 1212 .

[0056] It can be understood that the support platform 1213 plays the role of supporting the well pipe 110 on the one hand, and on the other hand, the support platform 1213 also plays a buffering role. When the obstacle 11 is sucked into the interior of the mounting seat 121 through the suction port 1212, the obstacle 11 will first be decelerated under the obstruction of the support platform 1213, and then fly towards the filter screen 130. In this way, the impact force of the obstacle 11 on the filter screen 130 can be reduced.

[0057] like Figure 2 As shown, further, the well pipe 110 includes a sand settling pipe section 111, a water permeable pipe section 112 and a support pipe section 113 connected in sequence from bottom to top, and the inner diameter of the water permeable pipe section 112 gradually increases from bottom to top.

[0058] It can be understood that the sand settling pipe section 111 and the support pipe section 113 are both equal-diameter pipes, and the inner diameter of the sand settling pipe section 111 is smaller than the inner diameter of the support pipe section 113. The inner diameter of the permeable pipe section 112 increases from bottom to top, and the inner diameter of the permeable pipe section 112 at one end close to the sand settling pipe section 111 is set to be equal to the inner diameter of the sand settling pipe section 111, and the inner diameter of the permeable pipe section 112 at one end close to the support pipe section 113 is set to be equal to the inner diameter of the support pipe section 113.

[0059] After the well pipe assembly 100 is installed in the pipe well 10, filtering sand and gravel can be backfilled on the outside of the sedimentation pipe section 111 and the permeable pipe section 112, and clay can be backfilled on the outside of the support pipe section 113; the filtering sand and gravel can have a filtering effect, improve the cleanliness of the water penetrating into the well pipe 110, and prevent the water from carrying debris close to the outer wall of the well pipe 110, reducing the risk of the pores of the well pipe 110 being blocked by debris; the clay can play a compacting role, improving the stability of the installation of the well pipe 110.

[0060] like Figure 4 As shown, further, a sealing plate 140 is detachably provided inside the water-permeable pipe section 112 , and the sealing plate 140 is provided with a through hole 141 for the air supply pipe to pass through, and the air pipe is used to connect to the air pump.

[0061] It can be understood that the outer diameter of the sealing plate 140 is larger than the inner diameter of the end of the permeable pipe section 112 close to the sand settling pipe section 111, and smaller than the inner diameter of the end of the permeable pipe section 112 close to the support pipe section 113. The sealing plate 140 can be hung from top to bottom into the permeable pipe section 112 until it contacts the inner wall of the permeable pipe section 112.

[0062] Specifically, the vacuum pump is connected to one end of the air pipe, and the other end of the air pipe is fixedly inserted into the through hole 141 of the sealing plate 140. The sealing plate 140 can be hoisted into the permeable pipe section 112 with the help of the air pipe. In this way, when the vacuum pump is turned on, the part below the sealing plate 140 can be evacuated, so that the scraped obstacles 11 are sucked into the interior of the well pipe assembly 100.

[0063] It should be noted that when the well pipe assembly 100 is rotated, the vacuum pump should also be rotated together to avoid the problem of entanglement of the air pipe.

[0064] In order to improve the stability of the sealing plate 140, a counterweight can be hoisted onto the sealing plate 140 using a rope to prevent the sealing plate 140 from being opened by air flow when the vacuum pump is pumping air.

[0065] It should be noted that after the well pipe assembly 100 is installed, the rope needs to be pulled up to pull out the counterweight. In addition, the air pipe also needs to be pulled up to pull out the sealing plate 140.

[0066] like Figure 6 、 Figure 8 As shown, in some embodiments, the cleaning member 1232 includes a slider 12321 movably connected in the mounting hole 1211 and connected to the bottom end of the elastic member 1231 , and a brush 12322 disposed below the slider 12321 .

[0067] Specifically, the slider 12321 can move up and down in the mounting hole 1211 , and the brush 12322 can clean the area below the mounting seat 121 .

[0068] Furthermore, a support 1233 is provided at the bottom of the slider 12321 .

[0069] It can be understood that when the well pipe assembly 100 is hung vertically, the bottom end of the brush 12322 is located below the bottom end of the pillar 1233. When the well pipe assembly 100 rotates, the brush 12322 can play a normal cleaning role. When the pillar 1233 contacts the bottom wall of the pipe well 10, as the well pipe assembly 100 continues to descend, the bottom wall of the pipe well 10 squeezes the pillar 1233, which can cause the slider 12321 to slide upward and the brush 12322 to shrink into the mounting hole 1211.

[0070] Furthermore, the bottom end of each mounting hole 1211 also has an accommodating groove 1214 arranged around the bottom end of the mounting hole 1211 .

[0071] It can be understood that when the well pipe assembly 100 is hung vertically, the bottom end of the brush 12322 is located below the bottom end of the pillar 1233, that is, the length of the brush 12322 is greater than the length of the pillar 1233. When the bottom of the mounting seat 121 contacts the bottom wall of the pipe well 10, part of the brush 12322 is still unable to retract into the mounting hole 1211. This part of the brush 12322 can be received in the accommodating groove 1214 to avoid affecting the verticality of the pipe well 10.

[0072] The present invention also relates to a method for installing the well pipe assembly, comprising:

[0073] S100, gradually lowering the well pipe assembly 100 into the pipe well 10 until the leveling mechanism 120 contacts the obstacle 11 at the bottom of the pipe well 10;

[0074] S200, rotating the well pipe assembly 100 so that the scraper 122 scrapes the obstacle 11 and the cleaning member 1232 cleans the obstacle 11 below the mounting seat 121;

[0075] S300 , while the obstacle 11 below the mounting seat 121 is cleared, the well pipe assembly 100 is further lowered so that the well pipe assembly 100 contacts the bottom wall of the pipe well 10 .

[0076] Furthermore, in step S200 , the process further includes turning on an air pump to allow the obstacle 11 to be sucked into the mounting seat 121 .

[0077] In the installation method of the well pipe assembly 100 of the present invention, first, the well pipe assembly 100 is gradually lowered into the pipe well 10 until the leveling mechanism 120 contacts the obstacle 11 at the bottom of the pipe well 10; then, the well pipe assembly 100 is rotated and the vacuum pump is turned on, so that the scraper 122 scrapes the obstacle 11. After the obstacle 11 is scraped and broken, the obstacle 11 can be sucked into the interior of the mounting seat 121 through the suction port 1212. In this way, it is possible to avoid the problem that all the obstacles 11 are completely accumulated around the outer periphery of the mounting seat 121, which makes it difficult to scrape the obstacles 11 apart; after the obstacles 11 are scraped away, the well pipe assembly 100 can be further lowered and Moreover, during the rotation of the well pipe assembly 100, the cleaning member 1232 can also clean the obstacle 11 under the mounting seat 121; finally, when the obstacle 11 under the mounting seat 121 is scraped away and the obstacle 11 directly below the mounting seat 121 is cleaned, the well pipe assembly 100 can be further lowered. As the mounting seat 121 gradually descends, the cleaning member 1232 can be squeezed by the bottom wall of the pipe well 10 and retracted into the mounting hole 1211; finally, when the mounting seat 121 contacts the bottom wall of the pipe well 10, since the obstacle 11 has been swept away, the obstacle 11 can be prevented from affecting the verticality of the well pipe 110.

[0078] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0079] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A well pipe assembly, characterized in that: include: well pipe; A leveling mechanism, the leveling mechanism comprising a mounting seat fixedly connected to the bottom end of the well pipe, and a plurality of scrapers arranged on the side walls of the mounting seat, the plurality of scrapers being arranged at intervals along the circumference of the well pipe, the bottom of the mounting seat being provided with a plurality of mounting holes, the plurality of mounting holes being arranged at intervals along the circumference of the well pipe, a cleaning unit being provided in each of the mounting holes, the cleaning unit comprising an elastic member provided in the mounting hole, and a cleaning member connected to the lower end of the elastic member, the cleaning member extending from below the mounting hole and being pressurized to be received in the mounting hole; The mounting base is a hollow structure and is sleeved on the bottom end of the well pipe. The bottom end of the mounting base has an opening communicating with the interior of the mounting base. The side wall of the mounting base is provided with a suction port communicating with the interior of the mounting base. A filter is provided inside the well pipe and is located above the suction port. The well pipe includes a sand settling pipe section, a permeable pipe section and a support pipe section which are sequentially connected from bottom to top, and the inner diameter of the permeable pipe section gradually increases from bottom to top; a sealing plate is detachably provided inside the permeable pipe section, and the sealing plate is provided with a through hole for the air supply pipe to pass through, and the air pipe is used to connect to the air pump.

2. The well pipe assembly according to claim 1, characterized in that The scraper is arranged obliquely.

3. The well pipe assembly according to claim 1, characterized in that A bearing platform is provided inside the mounting seat, the bottom end of the well pipe is provided on the bearing platform, and the bearing platform is located above the suction port.

4. The well pipe assembly according to claim 1, wherein: The cleaning member includes a slider movably connected in the mounting hole and connected to the bottom end of the elastic member, and a brush arranged below the slider.

5. The well pipe assembly according to claim 4, characterized in that The bottom of the sliding block is provided with a support column.

6. The well pipe assembly according to claim 5, characterized in that The bottom end of each mounting hole also has an accommodating groove arranged around the bottom end of the mounting hole.

7. The well pipe assembly according to claim 1, characterized in that The bottom end surface of the mounting seat is a planar structure.

8. A method for installing a well pipe assembly according to any one of claims 1 to 7, characterized in that: include: Gradually lowering the well pipe assembly into the pipe well until the leveling mechanism contacts the obstacle at the bottom of the pipe well; Rotate the well pipe assembly so that the scraper scrapes against the obstacle and the cleaning member cleans the obstacle below the mounting seat; While obstacles below the mounting seat are being cleared, the well pipe assembly is further lowered so that the well pipe assembly contacts the bottom wall of the pipe well.

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