CN212406683U - Integral casing pigging scraper - Google Patents
Integral casing pigging scraper Download PDFInfo
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- CN212406683U CN212406683U CN202020820876.1U CN202020820876U CN212406683U CN 212406683 U CN212406683 U CN 212406683U CN 202020820876 U CN202020820876 U CN 202020820876U CN 212406683 U CN212406683 U CN 212406683U
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- Prior art keywords
- wall
- scraping
- piston shaft
- scraper
- outer barrel
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- 238000007790 scraping Methods 0.000 claims abstract description 59
- 238000007789 sealing Methods 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to an integral type sleeve pipe drifting casing scraper, it includes top connection (1), urceolus (2), flow divider (3), piston shaft (4), go up and scrape the wall sword assembly, scrape the wall sword assembly down, cut round pin (5) and stifled (6) down, the lower extreme of top connection (1) links to each other with the upper end axial of urceolus (2), the upper end of stifled (6) links to each other with the lower extreme axial of urceolus (2) down, each is cut round pin (5) and is installed respectively under on stifled (6) lateral wall, the tip cooperatees with terminal surface under piston shaft (4) respectively, circumference looks interval has been seted up on the lateral wall of urceolus (2) three and has been scraped wall hole (21) and three down and scrape wall hole (22), piston shaft (4) can push away the outer wall that each scraped wall blade (7) through each leaf spring (8) when the lapse in urceolus (2) and scrape the outer casing wall. When the device is used for drifting and casing scraping, only one time of pipe column is needed, the operation procedures are few, and the period is short.
Description
Technical Field
The utility model relates to a petroleum tool, concretely relates to integral type sleeve pipe drifting scraper.
Background
The casing drift size gauge is a common tool for detecting the drift size in a casing string in a well, can be used for checking whether the drift size in the completed casing string meets the standard or not, and checking whether the casing string can pass through the tool with the preset size after being deformed or not, and is an essential tool for well repair and operation detection. The casing scraper can be used for removing cement blocks, cement sheath, hard wax and the like remained on the inner wall of the casing, various salt crystals and sediments, perforation burrs, iron oxide and the like generated after corrosion in the drilling or repairing operation, so that various downhole tools can be smoothly and freely underground. In the conventional well repairing operation, two operation procedures of drifting and scraping the inner wall of a casing are independently carried out, two times of pipe columns are needed, the operation procedures are multiple, and the period is long.
Disclosure of Invention
The utility model aims at providing a when drifting pipe scraping only need next tubular column, the operating is few, the short integral type sleeve pipe drifting scraper of cycle.
The technical solution of the utility model is that: the device comprises an upper connector, an outer barrel, a flow dividing head, a piston shaft, an upper wall scraping cutter assembly, a lower wall scraping cutter assembly, shear pins and a lower plug, wherein the lower end of the upper connector is axially connected with the upper end of the outer barrel through external threads, the flow dividing head is positioned below the upper connector and axially fixed in the outer barrel through the upper connector, the outer wall of an outer flange at the upper end of the flow dividing head is matched with the inner wall of the outer barrel, the piston shaft is positioned below the flow dividing head and axially slidably mounted in the outer barrel, the outer wall of the upper end of the piston shaft is axially slidably matched with the inner wall of the outer barrel in a sealing manner, the inner wall of the upper end is axially slidably matched with the outer wall at the lower position of the outer flange of the flow dividing head, the upper end of the lower plug is axially connected with the lower end of the outer barrel through the external threads, the upper end of the lower plug is axially slidably, the lateral wall of urceolus middle part top position goes up circumference looks interval and has seted up three and scrape the wall hole on, circumference looks interval has seted up three and scrapes the wall hole down on the lateral wall of urceolus middle part below position, scrape the wall hole on three and scrape the wall hole under with three and stagger mutually on the urceolus circumference, contain the whole circle of urceolus, go up and scrape the wall sword assembly down and constitute by three wall blade and three leaf spring respectively, each scrape the wall blade respectively along the radial slidable mounting of urceolus scrape the wall hole on respectively and scrape the wall hole under each, install the upper end at scraping the wall blade through the screw respectively in the upper end of each leaf spring, the middle part is buckled towards the piston shaft direction respectively, cooperate with the direction inclined plane of locating on the piston shaft outer wall, can push away the outer wall of each wall blade outside the urceolus through each leaf spring when the piston.
The technical effects of the utility model are that: when the device is used for drifting and casing scraping, only one time of pipe column is needed, the operation procedures are few, and the period is short. It can reduce operation cost, reduce operation time, can protect the oil reservoir and reduce the invasion time of workover fluid. The well drilling tool integrates the functions and advantages of two tools, namely a casing drift size gauge tool and a casing scraper, completes multiple operations in one-step well drilling, saves manpower and material resources, and is a high-efficiency tool with obvious advantages.
Drawings
Fig. 1 is a cross-sectional structure diagram of the embodiment of the present invention.
Detailed Description
As shown in figure 1, the device comprises an upper connector 1, an outer cylinder 2, a flow dividing head 3, a piston shaft 4, an upper wall scraping cutter assembly, a lower wall scraping cutter assembly, shear pins 5 and a lower plug 6, wherein the lower end of the upper connector 1 is axially connected with the upper end of the outer cylinder 2 through external threads, the flow dividing head 3 is positioned below the upper connector 1 and axially fixed in the outer cylinder 2 through the upper connector 1, the outer wall of an outer flange 31 at the upper end of the flow dividing head 3 is matched with the inner wall of the outer cylinder 2, the piston shaft 4 is positioned below the flow dividing head 3 and axially slidably mounted in the outer cylinder 2, the outer wall of the upper end of the piston shaft 4 is axially slidably matched with the inner wall of the outer cylinder 2, the inner wall of the upper end is axially slidably matched with the outer wall at the lower position of the outer flange 31 of the flow dividing head, the upper end of the lower plug 6 is axially connected with the lower end of the outer cylinder 2 through the external threads, the upper end of the, the end parts of the shear pins 5 are respectively matched with the lower end surface of the piston shaft 4, three upper wall scraping holes 21 are circumferentially arranged on the side wall at the upper position of the middle part of the outer barrel 2 at intervals, three lower wall scraping holes 22 are circumferentially arranged on the side wall at the lower position of the middle part of the outer barrel 2 at intervals, the three upper wall scraping holes 21 and the three lower wall scraping holes 22 are circumferentially staggered on the outer barrel 2 and contain the whole circle of the outer barrel 2, the upper wall scraping knife assembly and the lower wall scraping knife assembly are respectively composed of three wall scraping blades 7 and three plate springs 8, each wall scraping blade 7 is respectively arranged in each upper wall scraping hole 21 and each lower wall scraping hole 22 in a sliding manner along the radial direction of the outer barrel 2, the upper end of each plate spring 8 is respectively arranged at the upper end of the wall scraping blade 7 through a screw 9, and the middle part of, in cooperation with the guiding inclined surface 41 provided on the outer wall of the piston shaft 4, the outer wall of each paring blade 7 can be pushed to the outer wall of the outer cylinder 2 to scrape the casing wall by each plate spring 8 when the piston shaft 4 slides downward in the outer cylinder 2.
A plurality of axial diversion holes 32 are axially arranged on an outer flange 31 of the flow distribution head 3, and a plurality of radial diversion holes 33 are radially arranged on the side wall above the lower end part of the flow distribution head 3.
An inner conical surface 34 which is big at the top and small at the bottom and is matched with the plugging steel ball is arranged at the central hole position of the upper end part of the flow distribution head 3.
An upper control frame 10 and a lower control frame 11 are respectively arranged on the outer walls of the piston shaft 4 at the positions corresponding to the three upper wall scraping holes 21 and the three lower wall scraping holes 22, the upper control frame 10 and the lower control frame 11 are respectively sleeved and fixed on the outer wall of the piston shaft 4 and are in axial sliding fit with the inner wall of the outer barrel 2, upper wall scraping knife assembly matching grooves 12 are respectively arranged at the positions corresponding to the three upper wall scraping holes 21 on the piston shaft 4 and the upper control frame 10, the bottom of the upper wall scraping knife assembly matching groove 12 on the piston shaft 4 is a guide inclined surface 41 with a high height and a low height, lower wall scraping knife assembly matching grooves 13 are respectively arranged at the positions corresponding to the three lower wall scraping holes 22 on the piston shaft 4 and the lower control frame 11, and the bottom of the lower wall scraping knife assembly matching groove 13 on the piston shaft 4 is a guide inclined surface 41 with a high height and a.
The outer walls of the three paring blades 7 of the upper paring knife assembly are respectively provided with left-handed paring teeth 71.
The outer walls of the three paring blades 7 of the lower paring knife assembly are respectively provided with a right-handed paring tooth 72.
The upper end of the lengthening cylinder 14 is axially connected with the lower end of the lower plug 6 through internal threads.
The outer wall above the position where the upper joint 1 is connected with the outer barrel 2 through threads is provided with a sealing ring groove, and a sealing ring 15 which is in sliding sealing fit with the inner wall of the outer barrel 2 is arranged in the sealing ring groove.
The outer wall of the upper end part of the piston shaft 4 in sliding sealing fit with the outer barrel 2 is provided with a sealing ring groove, the sealing ring groove is internally provided with a sealing ring 15 in sealing fit with the inner wall of the outer barrel 2, the inner wall of the upper end part of the piston shaft 4 in sliding sealing fit with the flow divider 3 is provided with a sealing ring groove, and the sealing ring groove is internally provided with a sealing ring 15 in sliding sealing fit with the outer wall of the flow divider 3.
The working principle is as follows:
when the tool is put into the well, the steel ball is left on the well, the wall scraping blade 7 is in a contraction state, and the tool can be used as a drift gauge for drifting operation and can be used for forward and backward well cleaning operation (note that the flow rate is not too large in the process of forward well cleaning so as to avoid shearing a shear pin due to too large pressure difference and enter a scraper state in advance).
After the drifting and well-flushing operations are finished, the drifting pipe scraper is placed at the position of a sleeve to be scraped, and a ball is thrown into a seat to block the upper opening of the flow dividing head 3. When the pressure of the drilling fluid rises, the ball is proved to be seated, the pressure is continuously increased to 8-15MPa, the drilling fluid acts on the upper end part of the piston shaft 4 through each axial diversion hole 32 on the outer flange 31 of the flow dividing head, the piston shaft 4 is pushed to downwards shear the shear pin 5, meanwhile, the piston shaft 4, the upper control frame 10 and the three upper wall scraping cutter assembly matching grooves 12 and the three lower wall scraping cutter assembly matching grooves 13 on the lower control frame 11 enable the six wall scraping blades 7 to be released, the six wall scraping blades are opened and supported on the inner wall of the sleeve under the action of the elastic force of the plate spring 8, and the purpose of scraping the well wall can be achieved by moving the through-well pipe scraper up and down. At the moment, the axial diversion holes 32 and the radial diversion holes 33 on the diverter 3 are communicated, the drilling fluid flows back to the water holes of the piston shaft 4 below the steel balls through the radial diversion holes 33 on the lower part of the diverter 3, and the scraped debris can be taken out of the well while the well wall is scraped through pressurization circulation.
Claims (9)
1. Integral type sleeve pipe drifting casing scraper, it includes top connection (1), urceolus (2), reposition of redundant personnel head (3), piston shaft (4), goes up wall scraper assembly, scrapes wall scraper assembly down, cuts round pin (5) and blocks up (6) down, its characterized in that: the lower end of an upper connector (1) is axially connected with the upper end of an outer barrel (2) through an external thread, a flow dividing head (3) is positioned below the upper connector (1) and axially fixed in the outer barrel (2) through the upper connector (1), the outer wall of an outer flange (31) at the upper end of the flow dividing head (3) is matched with the inner wall of the outer barrel (2), a piston shaft (4) is positioned below the flow dividing head (3) and axially slidably installed in the outer barrel (2), the outer wall of the upper end of the piston shaft (4) is axially slidably and hermetically matched with the inner wall of the outer barrel (2), the inner wall of the upper end is axially slidably and hermetically matched with the outer wall at the lower position of the outer flange (31) of the flow dividing head, the upper end of a lower plug (6) is axially connected with the lower end of the outer barrel (2) through an external thread, the axial sliding and sleeving of the upper end of the lower plug (6) is arranged outside the lower end of the, the end parts of the shear pins (5) are respectively matched with the lower end surface of the piston shaft (4), three upper wall scraping holes (21) are circumferentially arranged at intervals on the side wall above the middle part of the outer barrel (2), three lower wall scraping holes (22) are circumferentially arranged at intervals on the side wall below the middle part of the outer barrel (2), the three upper wall scraping holes (21) and the three lower wall scraping holes (22) are circumferentially staggered on the outer barrel (2) and contain the whole circle of the outer barrel (2), an upper wall scraping knife assembly and a lower wall scraping knife assembly are respectively composed of three wall scraping blades (7) and three plate springs (8), each wall scraping blade (7) is respectively installed in each upper wall scraping hole (21) and each lower wall scraping hole (22) in a sliding manner along the radial direction of the outer barrel (2), the upper end of each plate spring (8) is respectively installed at the upper end of the wall scraping blade (7) through a screw (9), and the middle part of each plate spring (8) is respectively bent towards the piston shaft (4), the outer wall of each wall scraping blade (7) can be pushed to the outer wall of the outer cylinder (2) to scrape the sleeve wall through each plate spring (8) when the piston shaft (4) slides downwards in the outer cylinder (2) by matching with a guide inclined plane (41) arranged on the outer wall of the piston shaft (4).
2. An integral casing drift scraper as claimed in claim 1, wherein the outer flange (31) of said diverter head (3) is provided with a plurality of axial deflector holes (32) axially, and the side wall of the diverter head (3) above the lower end is provided with a plurality of radial deflector holes (33) radially.
3. The integrated casing drift scraper according to claim 1, wherein the central hole position in the upper end part of the flow dividing head (3) is provided with an inner conical surface (34) which is big at the top and small at the bottom and is matched with the plugging steel ball.
4. The integrated casing pigging scraper according to claim 1, characterized in that the outer wall of the piston shaft (4) corresponding to the three upper wall-scraping holes (21) and the three lower wall-scraping holes (22) is respectively provided with an upper control frame (10) and a lower control frame (11), the upper control frame (10) and the lower control frame (11) are respectively sleeved and fixed on the outer wall of the piston shaft (4) and are in axial sliding fit with the inner wall of the outer cylinder (2), the positions of the piston shaft (4) and the upper control frame (10) corresponding to the three upper wall-scraping holes (21) are respectively provided with an upper wall-scraping cutter assembly matching groove (12), the bottom of the upper wall-scraping cutter assembly matching groove (12) on the piston shaft (4) is a guide inclined plane (41) with a high height and a low height, the positions of the piston shaft (4) and the lower control frame (11) corresponding to the three lower wall-scraping holes (22) are respectively provided with a lower wall-scraping cutter assembly matching groove (13), the bottom of the lower wall scraping knife assembly matching groove (13) on the piston shaft (4) is a guide inclined surface (41) with high height and low height.
5. An integral casing drift scraper in accordance with claim 1 in which said upper scraper assembly has left-handed scraping teeth (71) on the outer wall of each of the three scraping blades (7).
6. An integral casing drift scraper in accordance with claim 1 in which said three scraping blades (7) of said lower scraping blade assembly are provided on their outer walls with right-handed scraping teeth (72), respectively.
7. An integral casing drift scraper according to claim 1 further comprising an extension barrel (14), the upper end of the extension barrel (14) being axially connected to the lower end of the lower plug (6) by means of an internal thread.
8. An integral casing drift scraper according to claim 1 in which the upper adaptor (1) is provided with a sealing ring groove in its outer wall above the point of connection with the outer barrel (2) by means of the screw thread, the sealing ring groove being provided with a sealing ring (15) in sliding sealing engagement with the inner wall of the outer barrel (2).
9. The integrated casing pigging scraper according to claim 1, characterized in that the outer wall of the upper end of the piston shaft (4) in sliding sealing engagement with the outer cylinder (2) is provided with a sealing ring groove, a sealing ring (15) in sealing engagement with the inner wall of the outer cylinder (2) is arranged in the sealing ring groove, the inner wall of the upper end of the piston shaft (4) in sliding sealing engagement with the diverter head (3) is provided with a sealing ring groove, and the sealing ring groove is provided with a sealing ring (15) in sliding sealing engagement with the outer wall of the diverter head (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020820876.1U CN212406683U (en) | 2020-05-18 | 2020-05-18 | Integral casing pigging scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020820876.1U CN212406683U (en) | 2020-05-18 | 2020-05-18 | Integral casing pigging scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212406683U true CN212406683U (en) | 2021-01-26 |
Family
ID=74377325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020820876.1U Active CN212406683U (en) | 2020-05-18 | 2020-05-18 | Integral casing pigging scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212406683U (en) |
-
2020
- 2020-05-18 CN CN202020820876.1U patent/CN212406683U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Integrated casing pipe scraper Effective date of registration: 20230329 Granted publication date: 20210126 Pledgee: Longjiang Bank Co.,Ltd. Mudanjiang Ping'an Branch Pledgor: Mudanjiang Tongyong Petroleum Tool Co.,Ltd. Registration number: Y2023230000032 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210126 Pledgee: Longjiang Bank Co.,Ltd. Mudanjiang Ping'an Branch Pledgor: Mudanjiang Tongyong Petroleum Tool Co.,Ltd. Registration number: Y2023230000032 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Integrated casing scraper Granted publication date: 20210126 Pledgee: Longjiang Bank Co.,Ltd. Mudanjiang Ping'an Branch Pledgor: Mudanjiang Tongyong Petroleum Tool Co.,Ltd. Registration number: Y2024980017349 |