CN210217679U - Small well bore sleeve milling, making and buckling, fishing and well repairing tool - Google Patents
Small well bore sleeve milling, making and buckling, fishing and well repairing tool Download PDFInfo
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- CN210217679U CN210217679U CN201920774152.5U CN201920774152U CN210217679U CN 210217679 U CN210217679 U CN 210217679U CN 201920774152 U CN201920774152 U CN 201920774152U CN 210217679 U CN210217679 U CN 210217679U
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Abstract
The utility model relates to an oil field workover technical field, in particular to slim hole cover mills to make and detains salvages workover rig. The device comprises an upper joint, a sleeve milling cylinder is arranged at the lower end of the upper joint, a female cone is arranged at the lower end of the sleeve milling cylinder, a sleeve milling head is arranged at the lower end of the female cone, and cutting edges are arranged at the end part and the inner side of the lower end of the sleeve milling head. The utility model discloses a can be in the internal diameter for phi 139.7mm, carry out the cover milling in phi 114.3 mm's slim hole cover pipe, make and detain, salvage the interior junk of well, can clear up fish top annular space junk, sand, guarantee that the fish top annular space is in the unfreezing state, the fish top is deepened and is salvaged length, can salvage the function of root oil pipe coupling down after the cover mills single oil pipe length, can carry out the back-off processing under the condition that the unfreezing of lifting load was unfreezed after successfully salvaging, the junk in the well is poured out safely, carry out the repeated construction step again.
Description
The technical field is as follows:
the utility model relates to an oil field workover technical field, in particular to slim hole cover mills to make and detains salvages workover rig.
Background art:
in the current oil field development, the number of oil-water wells of slim holes is increasing day by day during the well repair operation, because the bore diameter of the slim hole is small, the bore diameter is 139.7mm, the bore diameter is 114.3mm, the conventional fishing tool can not carry out the normal milling, making thread and fishing operation in the oil-water wells of slim holes, the falling objects in the well can not be fished out by the conventional fishing process, and the well repair process technology is backward, the selection of the fishing tool can not meet the technical requirement of slim hole well repair, the well repair operation construction is seriously influenced, the oil-water wells of slim holes can not normally produce, many oil fields are the construction of oil-water wells for laying down slim holes, the slim hole well repair operation is carried out after the well repair technology and the well repair tool are mature, the normal recovery of the oil-water wells is greatly influenced, and the yield of crude oil is reduced. The existing technology for fishing junk in a small well hole is to carry out single-trip fishing through a conventional fishing spear and a slip fishing barrel, at present, for a well with a pipe column buried in sand, a method of firstly milling and flushing sand and then fishing is adopted, one fishing sleeve is generally adopted, one fishing sleeve is used for processing, namely, the milling sleeve is firstly milled and the flushing sand is sleeved, after the sand is flushed out, then a fishing tool is used for carrying out fishing back-off processing, and at least two trips are needed; for an oil-water well with serious sand production, after the sleeve is flushed to the back-off depth, a great amount of sand is produced and the flushed oil pipe is buried in the process of pulling out the sleeve milling barrel and fishing the sleeve milling barrel by a lower fishing tool, so that the fishing is failed, and the problems of long construction period, low fishing success rate, large workload, high cost and the like exist; the method has the advantages that the sand-buried pipe column cannot be milled and fished, falling objects around the annular space of the fish head in the well cannot be effectively cleaned, the construction progress is slow, the well repairing construction cost is increased, the construction period is prolonged, and the yield of crude oil is influenced.
The utility model has the following contents:
the to-be-solved technical problem of the utility model is to provide a slim hole cover mills to make and detains salvages well repair instrument, the device has realized that the internal diameter is phi 139.7mm, carry out the cover in phi 114.3 mm's slim hole cover and mill, make and detain, salvage the interior junk of well, can be to fish head annular space junk, sand is cleared up, guarantee that the fish head annular space is in the unfreezing state, fish head salvage length has been deepened, can salvage the function of root oil pipe coupling after the cover mills single oil pipe length, can carry out the back-off processing under the condition that the unfreezing was not opened at the lifting load after successfully salvaging, the interior junk of well is poured out safely, carry out repeated construction step again, the construction process has been simplified greatly, the construction cycle has been shortened, well repair operation cost is reduced, the output of crude oil has been improved. The defects of low salvaging success rate, long salvaging period and high salvaging cost of the prior small well are overcome.
The utility model adopts the technical proposal that: a small borehole casing milling, making and fishing well repairing tool comprises an upper joint; the lower end of the upper joint is provided with a sleeve milling barrel, the lower end of the sleeve milling barrel is provided with a female cone, the lower end of the female cone is provided with a sleeve milling head, and the end part and the inner side of the lower end of the sleeve milling head are provided with cutting edges.
The length of the workover tool is greater than that of a single oil pipe or a drill pipe.
The length of the workover tool is 10-12 meters.
The outside diameter of the workover tool is less than 139.7 mm.
The workover tool outer diameter is less than 114.3 mm.
The utility model has the advantages that: the utility model discloses a can be in the internal diameter for phi 139.7mm, carry out the cover milling in phi 114.3 mm's slim hole cover pipe, make and detain, salvage the interior junk of well, can be to fish head annular space junk, sand is cleared up, guarantee that the fish head annular space is in the unfreezing state, the fish head salvages length has been deepened, can salvage the function of root oil pipe coupling after the cover mills single oil pipe length, can carry out the back-off processing under the condition that the unfreezing of lifting load was not opened after successfully salvaging, the junk in the well is poured out safely, carry out repeated construction step again, the work progress has been simplified greatly, construction cycle has been shortened, well workover operating cost is reduced, the yield of crude oil has been improved.
Description of the drawings:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1, a small borehole casing milling, making and fishing and workover tool comprises an upper joint 1; the lower end of the upper joint 1 is provided with a sleeve milling barrel 2, the lower end of the sleeve milling barrel 2 is provided with a female cone 3, the lower end of the female cone 3 is provided with a sleeve milling head 4, and the end part and the inner side of the lower end of the sleeve milling head 4 are provided with cutting edges.
The length of the workover tool is greater than that of a single oil pipe or a drill pipe.
The length of the workover tool is 10-12 meters.
The outside diameter of the workover tool is less than 139.7 mm.
The workover tool outer diameter is less than 114.3 mm.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (5)
1. A small borehole casing milling, making and fishing workover tool comprises an upper joint (1); the method is characterized in that: the lower end of the upper joint (1) is provided with a sleeve milling barrel (2), the lower end of the sleeve milling barrel (2) is provided with a female cone (3), the lower end of the female cone (3) is provided with a sleeve milling head (4), and the end part and the inner side of the lower end of the sleeve milling head (4) are provided with cutting edges.
2. The slim hole casing milling, making and fishing and workover tool according to claim 1, characterized in that: the length of the workover tool is greater than that of a single oil pipe or a single drill pipe.
3. The slim hole casing milling, making and fishing and workover tool according to claim 1, characterized in that: the length of the workover tool is 10-12 meters.
4. The slim hole casing milling, making and fishing and workover tool according to claim 1, characterized in that: the outside diameter of the workover tool is less than 139.7 mm.
5. The slim hole casing milling, making and fishing and workover tool according to claim 1, characterized in that: the outside diameter of the workover tool is less than 114.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774152.5U CN210217679U (en) | 2019-05-27 | 2019-05-27 | Small well bore sleeve milling, making and buckling, fishing and well repairing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774152.5U CN210217679U (en) | 2019-05-27 | 2019-05-27 | Small well bore sleeve milling, making and buckling, fishing and well repairing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210217679U true CN210217679U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920774152.5U Active CN210217679U (en) | 2019-05-27 | 2019-05-27 | Small well bore sleeve milling, making and buckling, fishing and well repairing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210217679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199227A (en) * | 2021-04-09 | 2022-10-18 | 中国石油天然气股份有限公司 | Sleeve milling tool |
-
2019
- 2019-05-27 CN CN201920774152.5U patent/CN210217679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199227A (en) * | 2021-04-09 | 2022-10-18 | 中国石油天然气股份有限公司 | Sleeve milling tool |
| CN115199227B (en) * | 2021-04-09 | 2024-05-28 | 中国石油天然气股份有限公司 | Milling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201118 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: LIAOHE PETROLEUM EXPLORATION BUREAU Co.,Ltd. Address before: 124010 No. 98, oil street, Xinglongtai District, Liaoning, Panjin Patentee before: LIAOHE PETROLEUM EXPLORATION BUREAU Co.,Ltd. |
|
| TR01 | Transfer of patent right |