CN212563146U - Anti-blocking type drifting tool - Google Patents
Anti-blocking type drifting tool Download PDFInfo
- Publication number
- CN212563146U CN212563146U CN202020850433.7U CN202020850433U CN212563146U CN 212563146 U CN212563146 U CN 212563146U CN 202020850433 U CN202020850433 U CN 202020850433U CN 212563146 U CN212563146 U CN 212563146U
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- CN
- China
- Prior art keywords
- tool
- drifting
- drifting tool
- jam
- hollow
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000011010 flushing procedure Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model belongs to oil gas development field relates to a drifting instrument is used in horizontal well and vertical well repeated fracturing. An anti-blocking drifting tool is in a hollow cylindrical shape, and a central hole is formed in the hollow part; the front end is a hemispherical hollow passing head, and the rear end is a connecting interface for connecting a working tool; the outer surface of the drifting tool is uniformly provided with concave rotating threads at intervals, and flushing holes are arranged in the concave rotating threads. The periphery of the hemispherical hollow passing head at the front end of the utility model adopts a spherical structure, thereby ensuring high passing rate in a shaft and facilitating the flushing of the shaft by the hollow structure; the main body of the drifting tool is provided with a thread structure, the motor can be connected when the drifting tool is used, and when the drifting tool is blocked or the drilling pressure in a horizontal well is insufficient, the motor can be driven by water power to drive the drifting tool to rotate, so that the drifting tool can exit or pass through the position where the drifting tool is blocked.
Description
Technical Field
The utility model belongs to oil gas development field relates to a drifting instrument is used in horizontal well and vertical well repeated fracturing.
Background
In the development process of oil and gas wells, when oil and gas vertical wells and horizontal wells are fractured repeatedly, the wells need to be opened and washed in advance, but the casing pipe can be deformed and damaged during primary fracturing, so that accidents such as drilling sticking are easily caused.
The drifting tool is usually directly connected with an oil pipe or a drill rod, is used in an oil-gas well and is used for checking the drift diameter condition of a casing through operation, at present, the existing drifting tool is connected with the oil pipe or the drill rod, only an oil pipe connector and a movable drill rod connector are connected, the outer diameter of the drifting tool is generally 110mm-118mm, the length of the drifting tool is determined according to the well type and required technological measures, and the length of the drifting tool is generally 1m-4 m. Because the external diameter of the drifting tool is relatively large, the annular space of the oil sleeve is very small, and when the old well is repeatedly fractured, the casing pipe generally has deformation of different degrees, and particularly the casing pipe deformation caused by the horizontal section bottom of the horizontal well, quartz sand, perforation burrs, fracturing and the like can cause the possibility of blocking in the drifting process.
Disclosure of Invention
The utility model aims at providing a well dredging tool is used to well dredging of straight well or horizontal well before old well repeated fracturing.
The technical scheme of the utility model lies in:
an anti-blocking drifting tool is in a hollow cylindrical shape, and a central hole is formed in the hollow part; the front end is a hemispherical hollow passing head, and the rear end is a connecting interface for connecting a working tool; the outer surface of the drifting tool is uniformly provided with concave rotating threads at intervals, and flushing holes are arranged in the concave rotating threads.
The external diameter of the drifting tool is 110-118mm, the length of the drifting tool is 1000-4000 mm, and the length of the central hole is 68-80 mm.
The thread pitch of the concave type rotating thread is 100-200mm, the width of the concave type rotating thread is 10mm, and the depth of the concave type rotating thread is 2-5 mm.
The included angle between 2 adjacent flushing eyelets is 90 degrees, and the outer diameter is 8-10 mm.
The working tool comprises a screw motor, a safety joint and a tubing type downhole working tool.
The oil pipe is 27/8Or 31/2And (4) an oil pipe.
The model of the screw motor is 2-3/8' PAC B, and the outer diameter of the screw motor is phi 73 mm.
The connecting interface is a connecting screw thread.
The technical effects of the utility model reside in that:
1. the periphery of the hemispherical hollow passing head at the front end of the utility model adopts a spherical structure, thereby ensuring high passing rate in a shaft and facilitating the flushing of the shaft by the hollow structure;
2. the main body of the drifting tool adopts a thread structure, the motor can be connected when the drifting tool is used, and when the drifting tool is blocked or the drilling pressure in a horizontal well is insufficient, the motor can be driven by water power to drive the drifting tool to rotate and exit or pass through the blocked position;
3. the drifting tool can wash out attachments such as dirt, wax, cement, quartz sand and the like on the wall of the well during drifting;
4. when the motor drives the drifting tool to rotate, the motor can scrape the wall of a well, and the effect of scraping is achieved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Reference numerals: 1-connecting screw threads, 2-concave type rotating screw threads, 3-flushing holes, 4-central holes and 5-hemispherical hollow through heads.
Detailed Description
EXAMPLE 1 use alone
An anti-blocking drifting tool is in a hollow cylindrical shape, and a central hole 4 is formed in the hollow part; the front end is a hemispherical hollow passing head 5, and the rear end is a connecting interface for connecting a working tool; the outer surface of the drifting tool is uniformly provided with concave rotating threads 2 at intervals, and flushing holes 3 are arranged in the concave rotating threads 2.
When the vertical well or the horizontal well is opened before repeated fracturing, the anti-blocking type opening tool is connected to the lower end of an oil pipe or a drill rod, when the target depth is reached, the well is washed with large discharge, the well washing liquid can flow out of the front end of the opening tool and the washing holes 3 in the threads at high speed to wash dirt on the well bottom and the well wall, and after the well is washed, the drilling tool is lifted to finish the opening and washing.
EXAMPLE 2 connecting screw Motor
On the basis of embodiment 1, the method further comprises the following steps:
when the underground condition is complex and the risk is high, the drilling tool is taken out, the anti-blocking type drifting tool is connected with the screw motor and is put into the well again, the screw motor is driven to rotate the drifting tool when the drilling tool is in the blocking position, and the shaft is processed until the drilling tool safely passes through the well.
EXAMPLE 3 connecting screw Motor
When the anti-blocking drifting tool is difficult to move when encountering a blocking drilling tool, the well washing liquid is used for positively circulating and washing the well, the well washing liquid can establish circulation through threads on the drifting tool, at the moment, the screw motor can drive the drifting tool to rotate, and the drifting tool can be withdrawn or positioned when encountering the blocking under the pushing of the threads when rotating.
Example 4
On the basis of embodiment 2 or 3, the method further comprises the following steps:
the external diameter of the drifting tool is 110-118mm, the length of the drifting tool is 1000-4000 mm, and the length of the central hole 4 is 68-80 mm. The thread pitch of the concave type rotating thread 2 is 100-200mm, the width of the concave type rotating thread 2 is 10mm, and the depth of the concave type rotating thread 2 is 2-5 mm. The included angle between 2 adjacent flushing eyelets 3 is 90 degrees, and the outer diameter is 8-10 mm. The working tool comprises a screw motor, a safety joint and a tubing type downhole working tool. The oil pipe is 27/8Or 31/2And (4) an oil pipe. The screw motor is 23/8' PAC B, with an outer diameter of phi 73 mm. The connecting interface is a connecting screw thread 1.
Claims (8)
1. An anti-blocking drifting tool, its characterized in that: the drifting tool is in a hollow cylindrical shape, and a central hole (4) is formed in the hollow part; the front end is a hemispherical hollow passing head (5), and the rear end is a connecting interface for connecting a working tool; the outer surface of the drifting tool is uniformly provided with concave rotating threads (2) at intervals, and flushing holes (3) are arranged in the concave rotating threads (2).
2. The jam-resistant drift tool of claim 1, wherein: the external diameter of the drifting tool is 110-118mm, the length of the drifting tool is 1000-4000 mm, and the length of the central hole (4) is 68-80 mm.
3. The jam-resistant drift tool of claim 2, wherein: the thread pitch of the concave rotating thread (2) is 100-200mm, the width of the concave rotating thread (2) is 10mm, and the depth of the concave rotating thread (2) is 2-5 mm.
4. The jam-resistant drift tool of claim 3, wherein: the included angle between the adjacent 2 flushing holes (3) is 90 degrees, and the aperture is 8-10 mm.
5. The jam-resistant drift tool of claim 4, wherein: the working tool comprises a screw motor, a safety joint and a tubing type downhole working tool.
6. The jam-resistant drift tool of claim 5, wherein: the oil pipe is 27/8Or 31/2And (4) an oil pipe.
7. The jam-resistant drift tool of claim 6, wherein: the model of the screw motor is 2-3/8' PAC B, and the outer diameter of the screw motor is phi 73 mm.
8. The jam-resistant drift tool of claim 7, wherein: the connecting interface is a connecting screw thread (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020850433.7U CN212563146U (en) | 2020-05-20 | 2020-05-20 | Anti-blocking type drifting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020850433.7U CN212563146U (en) | 2020-05-20 | 2020-05-20 | Anti-blocking type drifting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212563146U true CN212563146U (en) | 2021-02-19 |
Family
ID=74623388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020850433.7U Expired - Fee Related CN212563146U (en) | 2020-05-20 | 2020-05-20 | Anti-blocking type drifting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212563146U (en) |
-
2020
- 2020-05-20 CN CN202020850433.7U patent/CN212563146U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |