CN112196485A - Horizontal well is with cover milling tool - Google Patents
Horizontal well is with cover milling tool Download PDFInfo
- Publication number
- CN112196485A CN112196485A CN202011257992.8A CN202011257992A CN112196485A CN 112196485 A CN112196485 A CN 112196485A CN 202011257992 A CN202011257992 A CN 202011257992A CN 112196485 A CN112196485 A CN 112196485A
- Authority
- CN
- China
- Prior art keywords
- milling
- sleeve
- guide joint
- horizontal well
- fish
- Prior art date
- 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.)
- Pending
Links
- 238000003801 milling Methods 0.000 title claims abstract description 143
- 241000251468 Actinopterygii Species 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 19
- 238000010008 shearing Methods 0.000 claims abstract description 14
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 6
- 241001330002 Bambuseae Species 0.000 claims abstract description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 6
- 239000011425 bamboo Substances 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 2
- 230000003466 anti-cipated effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a casing milling tool for a horizontal well, which comprises a casing milling barrel (1) and is characterized in that: the sleeve milling barrel (1) is connected with a guide joint (7) through a shearing pin (2); the guiding joint (7) is used for guiding the milling sleeve (1) to pass through an inclined section or a horizontal section of the horizontal well to reach a fish falling position and enter an inner hole of a fish head of the falling fish; the shearing pin (2) is used for shearing the guide joint (7) through a downward pressing drilling tool under the centralizing action of the inner hole of the fish head so as to enable the guide joint (7) to be hidden in the milling barrel (1); the sleeve milling barrel (1) is used for performing sleeve milling treatment on the fish; the problem of current shell milling section of thick bamboo can not put down smoothly to the anticipated position, so can't accomplish the shell milling operation of making oblique section or horizontal segment in the horizontal well is solved.
Description
Technical Field
The invention relates to a casing milling tool, in particular to a casing milling tool applied to a horizontal well.
Background
At present, in the construction of horizontal wells in China, drilling sticking accidents occur frequently, and drilling instruments with higher equivalent values of rotary steering (each set of the instrument with the price of 1200 and 1500 ten thousands) are buried in the wells due to drilling sticking, so that the loss is huge.
After engineering accidents such as drill sticking occur, the conventional technology is to handle the drill sticking accident by lifting a drilling tool and using a while-drilling vibrator and other conventional technologies. In the case that the conventional means can not release the stuck drill, the casing milling barrel can be used for further processing for the stuck drill of the straight well section. However, for special process wells such as horizontal wells, due to the reasons of large outer diameter, strong rigidity and the like of the milling sleeve, when the milling sleeve is lowered to a deflecting section or a horizontal section, the milling sleeve can bite into the stratum of the lower well wall, so that the milling sleeve cannot be smoothly lowered to an expected position, milling operation of the deflecting section or the horizontal section cannot be completed in the horizontal well, downhole accidents cannot be relieved, and accidents such as scrapping, footage, burying of downhole tools and the like occur.
Disclosure of Invention
In view of the above, the invention provides a casing milling tool suitable for a horizontal well, and solves the problem that the casing milling operation of a deflecting section or a horizontal section cannot be completed in the horizontal well because the conventional casing milling cylinder cannot be smoothly put down to an expected position.
In order to achieve the purpose, the casing milling tool for the horizontal well comprises a casing milling barrel and is characterized in that:
the sleeve milling barrel is connected with a guide joint through a shearing pin;
the guide joint is used for guiding the milling barrel to pass through an inclined section or a horizontal section of the horizontal well to reach a fish falling position and enter an inner hole of a fish head of the falling fish;
the shearing pin is used for shearing the guide joint through a downward pressing drilling tool under the centralizing action of the inner hole of the fish head so as to enable the guide joint to be hidden in the milling barrel;
and the sleeve milling barrel is used for performing sleeve milling treatment on the fish.
Further, an axial liquid channel is arranged on the outer wall of the guide joint;
the liquid passage is used for the liquid flow in the well to clean the head of the milling barrel and prevent mud from being wrapped.
Further, the lead sub has a tapered head;
a water hole is arranged on the conical head;
and the water hole is used for allowing liquid flow in the well to pass through so as to cool the milling sleeve and carry rock debris and steel debris upwards.
Further, a positioning pin is connected between the milling sleeve and the guide joint;
the positioning pin is used for preventing the guide joint from falling off from the milling barrel when the guide joint is hidden into the milling barrel.
Furthermore, the upper part of the guide joint is provided with a drill rod thread;
and the drill rod thread is used for connecting the guide joint with a fishing drilling tool when the guide joint falls off.
Furthermore, alloy columns are riveted and inlaid on the outer wall of the positioning pin;
the alloy column is used for preventing the guide joint from falling off from the milling sleeve when the guide joint is hidden into the milling sleeve.
Further, a lower port of the sleeve milling cylinder is connected with a wear-resistant alloy sheet;
the wear-resistant alloy sheet is used for improving the milling efficiency.
Further, a reinforced milling layer is arranged at the lower part of the milling sleeve;
the reinforced milling layer is used for enhancing the wear-resisting degree of the milling sleeve so as to prolong the service life of the milling sleeve.
Further, the reinforcing milling layer is alloy solder.
The invention has the following beneficial effects:
according to the milling tool for the horizontal well, the lower part of the milling barrel is connected with the guide joint through the shearing pin, on one hand, the milling barrel can reach a fish-falling position through an inclined section or a horizontal section of the horizontal well by utilizing the guide function of the guide joint, on the other hand, the guide joint enters an inner hole of a fish head of the fish to centralize and position the milling barrel, so that the guide joint is hidden in an inner cavity of the milling barrel after the shearing pin is cut by a downward pressing drilling tool, and the purpose that the milling barrel directly contacts the fish to perform milling is achieved; the problem of current shell milling section of thick bamboo can not put down smoothly to the anticipated position, so can't accomplish the shell milling operation of making oblique section or horizontal segment in the horizontal well is solved.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a horizontal well casing tool according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a pilot joint according to an embodiment of the present invention;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a schematic structural diagram of a shell milling drum according to an embodiment of the present invention;
fig. 5 is a side view of fig. 4.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth. However, the present invention may be fully understood by those skilled in the art for those parts not described in detail.
Furthermore, those skilled in the art will appreciate that the drawings are provided solely for the purposes of illustrating the invention, features and advantages thereof, and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
FIG. 1 is a schematic diagram of a horizontal well casing tool according to an embodiment of the present invention; as shown in fig. 1: a casing milling tool for a horizontal well comprises a casing milling barrel 1, wherein the casing milling barrel 1 is connected with a guide joint 7 through a shearing pin 2; the guide joint 7 has the functions of: on one hand, the milling sleeve 1 is guided to smoothly pass through an inclined section or a horizontal section of the horizontal well so as to reach a fish falling position, and on the other hand, the milling sleeve can be inserted into an inner hole of a fish head of the fish falling.
The guide joint 7 will the milling sleeve 1 passes through when the deflecting section or the horizontal segment of horizontal well are in order to reach the fish position, the guide joint 7 inserts in the fish head hole of fish, realized the location of rightting of milling sleeve 1 guide joint 7 with under the common location effect of righting of fish head hole, cut through the drilling tool that pushes down shear pin 2, can make guide joint 7 is hidden in milling sleeve 1, continue to push down the drilling tool, milling sleeve 1 fall to directly with the fish contact, thereby realize milling sleeve 1 is right the fish carries out the purpose of milling the processing.
In fig. 1 and 2, an axial liquid channel 9 is arranged on the outer wall of the guide joint 7; the liquid channel 9 is used for the purpose of allowing the liquid flow in the well to pass through the liquid channel 9 so as to clean the head of the milling sleeve 1 and prevent mud from being included and affecting the milling effect.
In fig. 1, the guide joint 7 has a conical head, and the guide joint 7 of the conical head structure directly cuts off the contact between the milling sleeve 1 and the well wall in the process of going down the well, so that the milling sleeve 1 is prevented from being eaten into the well wall stratum, and therefore the milling sleeve 1 smoothly passes through a horizontal well to complete an inclined section or a horizontal section, the purpose that the milling sleeve 1 is smoothly lowered to a fish-dropping position is achieved, and accidents such as scrapping of a footage and burying of downhole tools are avoided.
In fig. 1, the guide joint 7 set up the water hole 8 on the toper head, set up the effect of water hole 8 is that when the liquid stream flows through this water hole 8 in the well, can take away a large amount of heats that a shell milling section of thick bamboo 1 produced in the shell milling processing procedure reach the purpose that a cooling shell milling section of thick bamboo 1, avoid a shell milling section of thick bamboo 1 to return because of overheated influence life, in addition, the liquid stream can carry detritus and steel cuttings to go up to return, in time clears up the piece that the shell milling in-process produced, promotes the shell milling speed.
In fig. 3, the number of the water holes 8 is 4, and the water holes are uniformly arranged along the circumferential direction of the head, so that the liquid flow can uniformly flow into the milling barrel 1.
In fig. 1, a positioning pin 3 is connected between the milling sleeve 1 and the guide joint 7, and the positioning pin 3 is used for preventing the guide joint 7 from falling into the well from the milling sleeve 1 in the process of tripping after the milling sleeve 1 finishes milling operation.
In fig. 1, the outer wall of the positioning pin 3 is riveted and inlaid with symmetrical alloy columns 4, and the outer diameter of the alloy columns 4 is not abraded and reduced during the milling process, so that the alloy columns 4 have the function of preventing the guide joint 3 from being abraded due to the rotation of milling fish in the milling process, namely the alloy columns 4 have the function of protecting the positioning pin 3 and further preventing the guide joint 7 from falling off the milling cylinder 1.
Preferably, the upper part of the guide joint 7 is provided with a drill rod thread, and the drill rod thread is arranged to prevent the milling sleeve 1 and the guide joint 1 from falling down in the well when an accident happens, and the guide joint 7 can be connected with a fishing drilling tool to facilitate fishing.
In fig. 1, 4 and 5, a lower port of the milling sleeve 1 is connected with a wear-resistant alloy sheet 6; the wear-resistant alloy sheet 6 has good milling effect, and can improve the cutting effect and milling efficiency of milling.
Further, the lower portion of the milling sleeve 1 is provided with a reinforced milling layer 5, and the reinforced milling layer 5 is used for enhancing the wear resistance of the milling sleeve 1 so as to prolong the service life of the milling sleeve 1. The reinforcing jacket milling layer may be a high strength YG alloy solder.
The milling sleeve 1 of this embodiment may adopt milling sleeves of other existing structural forms, and if milling sleeves of other structural forms are adopted, the connection mode between the milling sleeve and the guide joint 7, etc. may be adjusted adaptively, and this embodiment is not described again.
Specifically, the working process of the horizontal well casing milling tool of the present embodiment is described with reference to the accompanying drawings, so as to further understand the technical solution of the present application:
when the guiding joint is used, the guiding joint 7 is connected to the lower part of the milling sleeve 1 through the shearing pin 2, a conventional drilling tool is connected to the upper part of the milling sleeve 1, and the guiding joint 7 can safely guide the milling sleeve 1 behind the guiding joint to go down along with the downward movement of the drilling tool, so that the milling sleeve is prevented from being stuck into a well wall.
When the guide joint 7 contacts the upper end of the fish, the guide joint 7 enters the fish head inner hole of the fish and is erected on the fish head inner hole due to the structural characteristics of the conical head, so that the conical head of the guide joint 7 is inserted into the fish head inner hole, and the sleeve milling barrel 1 is naturally centered.
At the moment, the drilling tool is pressed down by 2.5 tons to 2.7 tons, and then 2 shear pins connected between the milling sleeve 1 and the guide joint 7 can be sheared off.
After the shearing pin 2 is sheared, the drilling tool is continuously lowered, the guide joint 7 is restricted by the inner hole of the fish head and cannot move, the milling sleeve 1 can continuously descend, the guide joint 7 is hidden in the milling sleeve 1 and is restricted by the anti-abrasion positioning pin 3 and the alloy column 4, and the guide joint 7 is prevented from falling from the milling sleeve 1. At the moment, the milling sleeve 1 directly acts on the fish, the drilling tool is rotated, and the milling sleeve 1 can normally mill the blocked fish.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, substitutions of equivalents, improvements and the like can be made without departing from the spirit of the invention, and these are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The utility model provides a horizontal well is with shell milling tool, includes shell milling section of thick bamboo (1), its characterized in that:
the sleeve milling barrel (1) is connected with a guide joint (7) through a shearing pin (2);
the guiding joint (7) is used for guiding the milling sleeve (1) to pass through an inclined section or a horizontal section of the horizontal well to reach a fish falling position and enter an inner hole of a fish head of the falling fish;
the shearing pin (2) is used for shearing the guide joint (7) through a downward pressing drilling tool under the centralizing action of the inner hole of the fish head so as to enable the guide joint (7) to be hidden in the milling barrel (1);
the sleeve milling barrel (1) is used for performing sleeve milling treatment on the fish.
2. The horizontal well casing milling tool of claim 1, wherein:
an axial liquid channel (9) is arranged on the outer wall of the guide joint (7);
the liquid channel (9) is used for the liquid flow in the well to clean the head part of the milling barrel (1) and prevent mud from being covered.
3. The horizontal well casing milling tool of claim 1, wherein:
the pilot joint (7) has a conical head;
a water hole (8) is arranged on the conical head;
the water hole (8) is used for the liquid flow in the well to pass through so as to cool the milling barrel (1) and carry the rock debris and the steel debris upwards.
4. The horizontal well casing milling tool of claim 1, wherein:
a positioning pin (3) is connected between the sleeve milling barrel (1) and the guide joint (7);
the positioning pin (3) is used for preventing the guide joint (7) from falling off from the milling sleeve (1) when the guide joint (7) is hidden into the milling sleeve (1).
5. The horizontal well casing milling tool of claim 1, wherein:
the upper part of the guide joint (7) is provided with drill rod threads;
the drill rod thread is used for connecting the guide joint (7) with a fishing drilling tool when falling.
6. The horizontal well casing milling tool of claim 1, wherein:
the outer wall of the positioning pin (5) is riveted with an alloy column (4);
the alloy column (4) is used for preventing the guide joint (7) from falling off from the milling sleeve (1) when the guide joint (7) is hidden into the milling sleeve (1).
7. The horizontal well milling tool of any one of claims 1 to 6, wherein:
the lower port of the sleeve milling cylinder (1) is connected with a wear-resistant alloy sheet (6);
the wear-resistant alloy sheet (6) is used for improving the milling efficiency.
8. The horizontal well casing milling tool of claim 7, wherein:
the lower part of the sleeve milling barrel (1) is provided with an enhanced sleeve milling layer;
the reinforced milling layer is used for enhancing the wear resistance of the milling sleeve (1) so as to prolong the service life of the milling sleeve (1).
9. The horizontal well casing milling tool of claim 7, wherein:
the reinforced milling layer is alloy solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011257992.8A CN112196485A (en) | 2020-11-11 | 2020-11-11 | Horizontal well is with cover milling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011257992.8A CN112196485A (en) | 2020-11-11 | 2020-11-11 | Horizontal well is with cover milling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112196485A true CN112196485A (en) | 2021-01-08 |
Family
ID=74033419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011257992.8A Pending CN112196485A (en) | 2020-11-11 | 2020-11-11 | Horizontal well is with cover milling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112196485A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622855A (en) * | 2021-09-18 | 2021-11-09 | 大庆科力远石油装备制造有限公司 | Hydraulic shaping device for casing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010035302A1 (en) * | 1998-03-13 | 2001-11-01 | Desai Praful C | Method for milling casing and drilling formation |
| CN2916108Y (en) * | 2006-06-08 | 2007-06-27 | 辽河石油勘探局 | Movable wimble mill tube |
| CN204113169U (en) * | 2014-09-26 | 2015-01-21 | 孙杰文 | Milling fisher |
| CN210685904U (en) * | 2019-10-11 | 2020-06-05 | 中国石油集团渤海钻探工程有限公司 | Easy-to-release milling and fishing integrated device |
| CN211370335U (en) * | 2019-10-25 | 2020-08-28 | 中国石油化工股份有限公司 | Integrated tool for milling and fishing and pipe column system |
-
2020
- 2020-11-11 CN CN202011257992.8A patent/CN112196485A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010035302A1 (en) * | 1998-03-13 | 2001-11-01 | Desai Praful C | Method for milling casing and drilling formation |
| CN2916108Y (en) * | 2006-06-08 | 2007-06-27 | 辽河石油勘探局 | Movable wimble mill tube |
| CN204113169U (en) * | 2014-09-26 | 2015-01-21 | 孙杰文 | Milling fisher |
| CN210685904U (en) * | 2019-10-11 | 2020-06-05 | 中国石油集团渤海钻探工程有限公司 | Easy-to-release milling and fishing integrated device |
| CN211370335U (en) * | 2019-10-25 | 2020-08-28 | 中国石油化工股份有限公司 | Integrated tool for milling and fishing and pipe column system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622855A (en) * | 2021-09-18 | 2021-11-09 | 大庆科力远石油装备制造有限公司 | Hydraulic shaping device for casing |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210108 |
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| RJ01 | Rejection of invention patent application after publication |