Wellhead cleaning device

Abstract

The invention provides a wellhead cleaning device which comprises a supporting frame and a power assembly and further comprises a movable assembly arranged at the lower end of a supporting platform and used for collecting sundries generated during wellhead cleaning. The cleaning assembly is arranged between the supporting platform and the first moving plate and used for washing the side wall of the well mouth and scraping away impurities. The linkage assembly is arranged between the supporting platform and the supporting disc and used for driving the movable assembly to be unfolded and enabling the spray head to spray water and the scraper to rotate; according to the device, the supporting frame, the movable assembly, the cleaning assembly, the linkage assembly and the power assembly are arranged, the movable assembly is firstly driven by the power assembly and the linkage assembly to be unfolded, then the inner wall of a wellhead is fully cleaned through the cleaning assembly, impurities falling during cleaning can fall on the unfolded movable assembly, and compared with manual operation in the prior art, the cleaning efficiency is greatly improved. By means of the well mouth cleaning device, well mouth sundries can be cleaned more efficiently, the cleaned sundries cannot fall into a well, and a safer and more effective cleaning means is provided.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas exploitation, and in particular to a wellhead cleaning device. Background Art

[0002] Shale gas is an unconventional natural gas that mainly exists in shale layers. Shale is a fine-grained sedimentary rock composed of clay minerals and organic matter. The formation process of shale gas is similar to that of conventional natural gas, but the storage method and extraction technology are different.

[0003] Due to the low permeability of shale gas, traditional natural gas extraction technology is difficult to effectively extract. Therefore, horizontal drilling and hydraulic fracturing technology are usually used to extract shale gas. In the process of shale gas extraction, dust, oil or other impurities will accumulate at the wellhead, which may clog the equipment, reduce the operating efficiency of the facility, and affect production. Therefore, it is usually necessary to clean the drilling wellhead regularly. However, under the existing technology, the cleaning of the wellhead is generally done by manually wearing protective clothing, using detergents and other tools such as brushes and shovels to clean the wellhead. This cleaning method is inefficient, and during the cleaning process, debris will fall into the inside of the drilling wellhead, which may bring further safety hazards.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a wellhead cleaning device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a wellhead cleaning device includes a support frame composed of a support platform and a plurality of support legs and a power assembly arranged on the support platform, wherein the power assembly includes a motor and a reducer, and also includes:

[0007] The movable assembly includes a support plate and a first movable plate, a second movable plate and a third movable plate arranged at the upper end of the support plate, and is arranged at the lower end of the support platform to collect debris generated by wellhead cleaning;

[0008] A cleaning assembly, including nozzles and scrapers arranged at intervals, is arranged between the support platform and the moving plate 1 to flush the side wall of the wellhead and scrape off impurities;

[0009] The linkage assembly is arranged between the support platform and the support plate, and is used to drive the movable assembly to unfold and make the nozzle spray water and the scraper rotate.

[0010] Furthermore, a rotating ring is rotatably provided at the upper end of the support plate, a fixed plate is fixedly provided at the bottom end of the inner wall of the support plate, a rotating plate is rotatably provided on the outer wall of the fixed plate, and a plurality of connecting rods fixedly provided on the side wall of the rotating plate and fixed to the inner wall of the rotating ring.

[0011] Furthermore, a connecting pile 1 is fixedly provided on one side of the movable plate 1, a connecting pile 2 is fixedly provided on one side of the movable plate 2, a plurality of supporting rods are fixedly provided on one side of the movable plate 3, a follower plate is fixedly provided on the upper end of the rotating disk, a plurality of connecting strips are rotatably provided on the upper end of the follower plate, and the other end of the connecting strip is rotatably connected to the connecting pile 1 and the connecting pile 2.

[0012] Furthermore, the inner side wall of the support plate is fixedly provided with a plurality of tracks 1 and 2, the bottom end of the connecting pile 1 is slidably connected to the track 1, the bottom end of the connecting pile 2 is slidably connected to the track 2, and a protrusion is provided at one end of the track 2.

[0013] Furthermore, a connecting shaft 1 is provided at the center of the movable plate 3, one end of the connecting shaft 1 passes through the fixed disk and is fixedly connected to the rotating disk, and the support rod is in sliding contact with the side wall of the fixed disk.

[0014] Furthermore, a connecting pipe is provided at one end of the nozzle, and a connecting shaft 2 is provided at one end of the scraper.

[0015] Furthermore, the linkage assembly includes a linkage disk rotatably arranged at the center of the support platform and a plurality of movable piles 1 and 2 arranged on the linkage disk, a linkage groove is opened on one side of the linkage disk, a bevel gear 1 is arranged at one end of the connecting shaft 1 and passes through the center of the linkage disk, a linkage rod is fixedly arranged at one end of the connecting shaft 1, one end of the linkage rod is slidably arranged in the linkage groove, the output end of the motor is connected to the reducer, and one end of the linkage rod is connected to the other end of the reducer.

[0016] Furthermore, the inner side wall of the linkage disk is rotatably provided with a linkage shaft 1 and a linkage shaft 2 which are distributed at intervals, the linkage shaft 1 corresponds to the movable pile 1, and the linkage shaft 2 corresponds to the movable pile 2.

[0017] Furthermore, one end of the linkage shaft 1 is fixedly provided with a bevel gear 2 adapted to the bevel gear 1, the other end of the linkage shaft 1 is provided with a thread, the inner side wall of the movable pile 1 is provided with a thread groove adapted to the linkage shaft 1, and the movable pile 1 is fixedly connected to the connecting shaft 2.

[0018] Furthermore, one end of the linkage shaft 2 is fixedly provided with a bevel gear 3 that is compatible with the bevel gear 1, the other end of the linkage shaft 2 is provided with a thread, the inner side wall of the movable pile 2 is provided with a thread groove that is compatible with the linkage shaft 2, a moving piston is provided inside the movable pile 2, and the movable pile 2 is fixedly connected to the connecting pipe and is internally communicated.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By setting up a support frame, a movable component, a cleaning component, a linkage component and a power component, the power component and the linkage component are used to first drive the movable component to unfold, and then the inner wall of the wellhead is fully cleaned by the cleaning component. The impurities that fall after cleaning will fall on the opened movable component, and the cleaning component is driven by the power component to complete the cleaning. Compared with manual operations under the existing technology, the cleaning of debris at the wellhead can be completed more efficiently, and the debris after cleaning will not fall into the well, providing a safer and more effective cleaning method. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 The overall structure of an embodiment of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of an embodiment of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of a support plate in one embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the supporting plate and the following plate in one embodiment of the present invention;

[0026] Figure 5 It is a structural schematic diagram of a movable plate 3 and a fixed plate in an embodiment of the present invention;

[0027] Figure 6 It is a structural schematic diagram of a linkage rod and a linkage disk in one embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the structure of a nozzle and a scraper in one embodiment of the present invention;

[0029] Figure 8 It is a schematic cross-sectional structure diagram of a support frame and a linkage disk in one embodiment of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of a connecting shaft 1 and a linkage shaft 1 in an embodiment of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of connecting shaft 1 and linkage shaft 2 in one embodiment of the present invention.

[0032] In the figure: 1, support frame; 101, support platform; 102, support leg; 2, movable assembly; 201, support plate; 2011, rotating plate; 2012, fixed plate; 2013, connecting rod; 202, rotating ring; 203, moving plate 1; 2031, connecting pile 1; 204, moving plate 2; 2041, connecting pile 2; 205, moving plate 3; 2051, support rod; 206, follow-up plate; 2061, connecting strip; 2062, track 1; 2063, track 2; 207, connecting rod Connecting shaft one; 2071, bevel gear one; 3, cleaning component; 301, nozzle; 3011, connecting pipe; 302, scraper; 3021, connecting shaft two; 4, linkage component; 401, linkage disk; 402, linkage groove; 403, connecting rod; 404, movable pile one; 405, movable pile two; 406, linkage shaft one; 4061, bevel gear two; 407, linkage shaft two; 4071, bevel gear three; 408, moving piston; 5, power component; 501, motor; 502, reducer. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] See also Figure 1-10 .

[0037] The present invention provides a technical solution for a wellhead cleaning device: the wellhead cleaning device is used for cleaning a shale gas extraction wellhead, comprising a support frame 1 composed of a support platform 101 and a plurality of support legs 102, and a power assembly 5 arranged on the support platform 101, the power assembly 5 comprising a motor 501 and a reducer 502, and also comprising: an active assembly 2 composed of a support disk 201 and a movable plate 1 203, a movable plate 204 and a movable plate 3 205 arranged at the upper end of the support disk 201, which is unfolded to collect debris generated by wellhead cleaning; a cleaning assembly 3 composed of a nozzle 301 and a scraper 302 arranged at intervals, which is arranged between the support platform 101 and the movable plate 1 203, and is used to flush the side wall of the wellhead and scrape off impurities; a linkage assembly 4 arranged between the support platform 101 and the support disk 201, which is used to drive the active assembly 2 to unfold and make the nozzle 301 spray water and the scraper 302 rotate.

[0038] By setting up a support frame 1, a movable component 2, a cleaning component 3, a linkage component 4 and a power component 5, the power component 5 and the linkage component 4 are used to first drive the movable component 2 to unfold, and then the inner wall of the wellhead is fully cleaned by the cleaning component 3. The impurities dropped after cleaning will fall on the opened movable plate 1 203 and the movable plate 2 204. The cleaning is completed by driving the cleaning component 3 through the power component 5. Compared with manual operations under the existing technology, the cleaning of debris at the wellhead can be completed more efficiently, and the debris after cleaning will not fall into the well, providing a safer and more effective cleaning method.

[0039] In one embodiment, a rotating ring 202 is rotatably provided on the upper end of the support disk 201, a fixed disk 2012 is fixedly provided on the bottom end of the inner side wall of the support disk 201, a rotating disk 2011 is rotatably provided on the outer side wall of the fixed disk 2012, a plurality of connecting rods 2013 fixedly provided on the side wall of the rotating disk 2011 and fixedly provided with the inner side wall of the rotating ring 202, a connecting pile 1 2031 is fixedly provided on one side of the movable plate 1 203, a connecting pile 2041 is fixedly provided on one side of the movable plate 204, a plurality of supporting rods 2051 are fixedly provided on one side of the movable plate 3 205, a follower disk 206 is fixedly provided on the upper end of the rotating disk 2011, and the upper end of the follower disk 206 is rotatably provided. A plurality of connecting bars 2061 are rotatably provided, and the other ends of the connecting bars 2061 are rotatably connected to the connecting pile 1 2031 and the connecting pile 2 2041; a plurality of tracks 1 2062 and tracks 2 2063 are fixedly provided on the inner side wall of the support plate 201; the bottom end of the connecting pile 1 2031 is slidably connected to the track 1 2062; the bottom end of the connecting pile 2041 is slidably connected to the track 2 2063; a protrusion is provided at one end of the track 2063; a connecting shaft 1 207 is provided at the center of the movable plate 3 205; one end of the connecting shaft 1 207 passes through the fixed plate 2012 and is fixedly connected to the rotating plate 2011; and the support rod 2051 is in sliding contact with the side wall of the fixed plate 2012.

[0040] With this design, when the connecting shaft 1 207 is driven to rotate by the motor 501 through the reducer 502, one end of the connecting shaft 1 207 will drive the rotating disk 2011 to rotate, and the rotation of the rotating disk 2011 will drive the follower disk 206 to rotate. When the follower disk 206 rotates, it will drive the connecting pile 1 2031 and the connecting pile 2 2041 to slide on the track 1 2062 and the track 2 2063 respectively through the connecting bar 2061. Since a protrusion is provided at one end of the track 2063, the connecting pile 2 2041 will be lifted when it moves to the end of one end, and the corresponding movable plate 1 203 and movable plate 2 204 will move respectively, and the support rod 2051 at the lower end of the movable plate 3 205 at the center will continuously move upward on the side wall of the fixed disk 2012, driving the movable plate 3 205 moves up, when the movable plate three 205 is in the same horizontal plane as the movable plate one 203 and the movable plate two 204, the overall deployment of the movable component 2 will be completed. At this time, the newly formed platform will be larger than the support plate 201. This arrangement is to ensure that the smaller support plate 201 will not be blocked by impurities on the side wall of the wellhead when entering the wellhead, and the support plate 201 will not scrape impurities on the side wall into the wellhead. When the support legs 102 are supported outside the wellhead, the support plate 201 under the support platform 101 enters the wellhead. After the movable plates one 203, two 204 and three 205 are fully deployed, their sides will fit with the inner wall of the wellhead, so that the debris scraped off the inner wall of the wellhead can fall on it, and will not enter the well to cause deeper pollution.

[0041] In one embodiment, a connecting pipe 3011 is provided at one end of the nozzle 301, a connecting shaft 2 3021 is provided at one end of the scraper 302, the linkage assembly 4 includes a linkage disk 401 rotatably arranged at the center of the support platform 101 and a plurality of movable piles 1 404 and movable piles 2 405 arranged on the linkage disk 401, a linkage groove 402 is provided on one side of the linkage disk 401, a bevel gear 1 2071 is provided at one end of the connecting shaft 1 207 and passes through the center of the linkage disk 401, a linkage rod 403 is fixedly provided at one end of the connecting shaft 1 207, and one end of the linkage rod 403 is slidably arranged in the linkage groove 402, the output end of the motor 501 is connected to the reducer 502, one end of the linkage rod 403 is connected to the other end of the reducer 502, and the inner side wall of the linkage disk 401 is rotatably provided with a linkage shaft 1 406 and a linkage shaft 406 distributed at intervals. Moving shaft 2 407, linkage shaft 1 406 corresponds to movable pile 1 404, linkage shaft 2 407 corresponds to movable pile 2 405, one end of linkage shaft 1 406 is fixedly provided with bevel gear 2 4061 matched with bevel gear 1 2071, the other end of linkage shaft 1 406 is provided with thread, the inner side wall of movable pile 1 404 is provided with thread groove matched with linkage shaft 1 406, movable pile 1 404 is fixedly connected with connecting shaft 2 3021, one end of linkage shaft 2 407 is fixedly provided with bevel gear 3 4071 matched with bevel gear 1 2071, the other end of linkage shaft 2 407 is provided with thread, the inner side wall of movable pile 2 405 is provided with thread groove matched with linkage shaft 2 407, a moving piston 408 is provided inside movable pile 2 405, movable pile 2 405 is fixedly connected with connecting pipe 3011 and communicated with the inside.

[0042] With this design, when the connecting shaft 1 207 is driven to rotate, the bevel gear 1 2071 will drive the meshing bevel gear 2 4061 and the bevel gear 3 4071 to rotate, and the rotation of the bevel gear 2 4061 and the bevel gear 3 4071 will respectively drive the linkage shaft 1 406 and the linkage shaft 2 407 to rotate, and the rotation of the linkage shaft 1 406 will cause the movable pile 1 404 to push the scraper 302 to move toward the direction close to the side wall of the wellhead, and the rotation of the linkage shaft 2 407 will push the moving piston 408 inside the movable pile 2 405, so that the other end of the movable pile 2 405 squeezes the nozzle 301, thereby spraying the cleaning agent to the inside of the wellhead. The impurities on the wall are softened to facilitate scraping by the scraper 302. When the connecting shaft 207 is driven to rotate, one end of the connecting rod 403 will slide in the connecting groove 402. At this time, the connecting shaft 207 will not drive the connecting disk 401 to rotate. When the connecting rod 403 slides to the other end of the connecting groove 402, one end of the connecting rod 403 will resist the connecting groove 402, thereby driving the connecting disk 401 to rotate synchronously. This arrangement is to enable the cleaning agent sprayed by the nozzle 301 to soften the impurities on the inner wall of the wellhead first, so as to avoid direct contact between the scraper 302 and the impurities, which will cause damage to the scraper 302.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A wellhead cleaning device, comprising a support frame (1) consisting of a support platform (101) and a plurality of support legs (102), and a power assembly (5) arranged on the support platform (101), wherein the power assembly (5) comprises a motor (501) and a reducer (502), characterized in that: Also included are: The movable assembly (2) comprises a support plate (201) and a movable plate 1 (203), a movable plate 2 (204) and a movable plate 3 (205) arranged at the upper end of the support plate (201), and is arranged at the lower end of the support platform (101) to collect debris generated by wellhead cleaning; A cleaning assembly (3), comprising a nozzle (301) and a scraper (302) arranged at intervals, arranged between the support platform (101) and the first movable plate (203), for flushing the side wall of the wellhead and scraping off impurities; The linkage assembly (4) is arranged between the support platform (101) and the support plate (201) and is used to drive the movable assembly (2) to unfold and enable the spray head (301) to spray water and the scraper (302) to rotate.

2. The wellhead cleaning device according to claim 1, characterized in that: A rotating ring (202) is rotatably provided at the upper end of the support disk (201), a fixed disk (2012) is fixedly provided at the bottom end of the inner wall of the support disk (201), a rotating disk (2011) is rotatably provided on the outer wall of the fixed disk (2012), and a plurality of connecting rods (2013) fixedly provided on the side wall of the rotating disk (2011) and fixedly provided with the inner wall of the rotating ring (202).

3. The wellhead cleaning device according to claim 2, characterized in that: A connecting pile 1 (2031) is fixedly provided on one side of the movable plate 1 (203), a connecting pile 2 (2041) is fixedly provided on one side of the movable plate 2 (204), a plurality of supporting rods (2051) are fixedly provided on one side of the movable plate 3 (205), a follower disk (206) is fixedly provided on the upper end of the rotating disk (2011), a plurality of connecting strips (2061) are rotatably provided on the upper end of the follower disk (206), and the other end of the connecting strip (2061) is rotatably connected to the connecting pile 1 (2031) and the connecting pile 2 (2041).

4. The wellhead cleaning device according to claim 3, characterized in that: The inner side wall of the support plate (201) is fixedly provided with a plurality of tracks 1 (2062) and tracks 2 (2063); the bottom end of the connecting pile 1 (2031) is slidably connected to the track 1 (2062); the bottom end of the connecting pile 2 (2041) is slidably connected to the track 2 (2063); and a protrusion is provided at one end of the track 2 (2063).

5. The wellhead cleaning device according to claim 3, characterized in that: A connecting shaft 1 (207) is provided at the center of the movable plate 3 (205), one end of the connecting shaft 1 (207) passes through the fixed disk (2012) and is fixedly connected to the rotating disk (2011), and the support rod (2051) is in sliding contact with the side wall of the fixed disk (2012).

6. The wellhead cleaning device according to claim 1, characterized in that: One end of the nozzle (301) is provided with a connecting pipe (3011), and one end of the scraper (302) is provided with a second connecting shaft (3021).

7. The wellhead cleaning device according to claim 5, characterized in that: The linkage assembly (4) comprises a linkage disk (401) rotatably arranged at the center of the support platform (101) and a plurality of movable piles 1 (404) and 2 (405) arranged on the linkage disk (401); a linkage groove (402) is provided on one side of the linkage disk (401); a bevel gear 1 (2071) is provided at one end of the connecting shaft 1 (207) and passes through the center of the linkage disk (401); a linkage rod (403) is fixedly arranged at one end of the connecting shaft 1 (207); one end of the linkage rod (403) is slidably arranged in the linkage groove (402); the output end of the motor (501) is connected to the reducer (502), and one end of the linkage rod (403) is connected to the other end of the reducer (502).

8. The wellhead cleaning device according to claim 7, characterized in that: The inner side wall of the linkage disk (401) is rotatably provided with a linkage shaft 1 (406) and a linkage shaft 2 (407) which are distributed at intervals. The linkage shaft 1 (406) corresponds to the movable pile 1 (404), and the linkage shaft 2 (407) corresponds to the movable pile 2 (405).

9. The wellhead cleaning device according to claim 8, characterized in that: One end of the linkage shaft 1 (406) is fixedly provided with a bevel gear 2 (4061) adapted to the bevel gear 1 (2071), and the other end of the linkage shaft 1 (406) is provided with a thread, and the inner side wall of the movable pile 1 (404) is provided with a thread groove adapted to the linkage shaft 1 (406), and the movable pile 1 (404) is fixedly connected to the connecting shaft 2 (3021).

10. The wellhead cleaning device according to claim 9, characterized in that: One end of the linkage shaft 2 (407) is fixedly provided with a bevel gear 3 (4071) matched with the bevel gear 1 (2071), and the other end of the linkage shaft 2 (407) is provided with a thread, and the inner side wall of the movable pile 2 (405) is provided with a thread groove matched with the linkage shaft 2 (407), and a moving piston (408) is arranged inside the movable pile 2 (405), and the movable pile 2 (405) is fixedly connected with the connecting pipe (3011) and communicated with the inside.

Images