CN205558850U - Cover mills section of thick bamboo reentry and uses sleeve pipe guide structure - Google Patents
Cover mills section of thick bamboo reentry and uses sleeve pipe guide structure Download PDFInfo
- Publication number
- CN205558850U CN205558850U CN201620135344.8U CN201620135344U CN205558850U CN 205558850 U CN205558850 U CN 205558850U CN 201620135344 U CN201620135344 U CN 201620135344U CN 205558850 U CN205558850 U CN 205558850U
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- China
- Prior art keywords
- sleeve pipe
- seeker
- spike
- tubular column
- reentry
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Abstract
The utility model discloses a cover mills section of thick bamboo reentry and uses sleeve pipe guide structure, including sleeve pipe guiding head and spike tubular column, sleeve pipe guiding head includes that top -down welds last guiding head as an organic whole, annular table and time guiding head in proper order, all is formed with an annular boss on annular table's design messenger's sleeve pipe guiding head outer wall and the inner wall, the spike tubular column includes first tubular column body and fixes the spike pipe top connection at the upside of tubular column body, and the external diameter of spike pipe top connection is greater than annular table's internal diameter, make spike tubular column suit in sleeve pipe guiding head and the lower terminal surface of spike pipe top connection press join in marriage the up end of annular boss on sleeve pipe guiding head inner wall on, make the long tubular column at the bottom of the spike tubular column forms drifting always through a plurality of second tubular column bodies that connect gradually in spike tubular column bottom in addition, this cover mills section of thick bamboo reentry and uses sleeve pipe guide structure is with low costs, solves to cover and waits to get set pipe box in the pit and mill a section of thick bamboo and play the reentry problem of difficulty of back, prevents simultaneously to wait to get that sleeve pipe fish head is lost in the pit, damage etc..
Description
Technical field
This utility model petroleum well workover equipment tool technical field, particularly to a kind of casing section mill reentry sleeve pipe guide structure.
Background technology
In petroleum well workover change casing is constructed, often to carry out overlapping milling operation to the sleeve pipe that plan is taken out, as change the milling shoe of casing section mill maybe to carry out cutting the operations such as sleeve pipe time, casing section mill will be tripped out, after casing section mill trips out, when entering down casing section mill to down-hole in time taking sleeve pipe and carry out overlapping milling operation, casing section mill is difficult to cover in the sleeve pipe to be taken of down-hole again, and there will be the following two kinds situation: one is probably and makes down-hole sleeve pipe to be taken fish head lose；Alternatively possible is to make down-hole sleeve pipe to be taken rive from sleeve pipe fish head top, thus increases difficulty of construction.
During petroleum well workover change casing, cover down-hole and annoying engineers and technicians wait the reentry problem after tripping out taking sleeve pipe casing section mill always, solve for a long time the method for this problem be in well under enter spike tubing string, but spike tubing string can only ensure casing section mill trip out after sleeve pipe fish head to be taken will not lose, and the reentry problem of casing section mill can not be solved, therefore in existing construction operation, need to develop one can overcome disadvantage mentioned above and unfavorable factor new product, make the construction of petroleum well workover change casing be smoothed out.
Utility model content
The purpose of this utility model is to provide a kind of casing section mill making to go into the well and easily covers down-hole sleeve pipe to be taken, and reentries the casing section mill reentry sleeve pipe guide structure of problem of difficulty solving to cover down-hole after taking sleeve pipe casing section mill and tripping out.
To this end, technical solutions of the utility model are as follows:
A kind of casing section mill is reentried and is used sleeve pipe guide structure, is provided with the sleeve pipe seeker of through hole including spike tubing string and center, and described sleeve pipe seeker is arranged on bottom casing section mill.
Described sleeve pipe seeker includes upper seeker, annular table and the lower seeker being sequentially connected with from top to bottom；The external diameter of described annular table, described lower seeker and described upper seeker is sequentially reduced；The internal diameter of described upper seeker, described lower seeker and described annular table is sequentially reduced, and makes described sleeve pipe seeker outer wall and inwall be respectively formed on an annular boss.
Preferably, the external diameter of described annular table is less than the internal diameter of casing section mill；The external diameter of described lower seeker be less than described in casing inner diameter 4～6mm to be taken.
Preferably, the length of described upper seeker is less than the length of described lower seeker；A length of the 0.3～0.5m of described upper seeker, sidewall wall thickness is 9～10mm；A length of the 1～1.5m of described lower seeker, sidewall wall thickness is 7～9mm.
Preferably, the external diameter of described annular table is more than sleeve outer to be taken, when making taking-up sleeve pipe described annular table lower surface be press-fitted to described in sleeve pipe to be taken upper surface on；The sidewall wall thickness of described annular table is not less than 40mm.
Described spike tubing string includes the first tubular column main body and spike pipe top connection；Described spike pipe top connection is set with and is fixed on the upside of described tubular column main body；Described first tubular column main body external diameter adapts with described annular table internal diameter, the external diameter of described spike pipe top connection is more than the internal diameter of described annular table, and in making described spike tubing string be sleeved on described sleeve pipe seeker and the lower surface of described spike pipe top connection is press-fitted on described sleeve pipe seeker inwall on the upper surface of annular boss；It addition, on the upper surface of this described first tubular column main body central through hole of being suspended on the annular boss of described sleeve pipe seeker, can be used for the shaft bottom by being artificially formed cement plug and support.
Further, this casing section mill reentry sleeve pipe guide structure also includes multiple the second tubular column main body being arranged on below described spike tubing string and being sequentially connected with from top to bottom and multiple spike pipe lower contact；Each described second tubular column main body top and bottom outer wall are equipped with connection external screw thread, each described spike pipe lower contact inwall is equipped with connection female thread, by the described threaded tubing string being fixed as at the bottom of drifting always of spike pipe lower contact between described first tubular column main body with described second tubular column main body, between adjacent two described second tubular column main body, making described spike pipe extend downward the shaft bottom being artificially formed cement plug, the length that described spike pipe downwardly extends is equal to be artificially formed the degree of depth in the shaft bottom of cement plug；Described spike pipe top connection is threaded connection suit and is fixed on the upside of described tubular column main body.
Further, the end, upper seeker upper end of described sleeve pipe seeker, the lower end of lower seeker all make end tapered to contract, make described casing section mill and described sleeve pipe seeker be easy to be set on described outside seeker and in described sleeve pipe to be taken；On annular boss on described sleeve pipe seeker outer wall, drift angle is processed as an inclined-plane, it is simple to sleeve pipe to be taken described in the reentry of described casing section mill carries out set and washes operation.
Compared with prior art, this casing section mill reentry sleeve pipe guide structure utilizes the guiding function of sleeve pipe seeker, the casing section mill tripped out is made the most successfully to cover down-hole sleeve pipe to be taken fish head, solve taking of petroleum well workover and overlap in construction, cover down-hole reentry after taking sleeve pipe casing section mill and tripping out difficulty problem, prevent down-hole sleeve pipe to be taken fish head from losing, down-hole sleeve pipe to be taken fish head is cut open and annular space foreign material enter the problem in the sleeve pipe to be taken of down-hole during set milling, simple and practical, low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the structural representation of casing section mill reentry sleeve pipe guide structure duty of the present utility model；
Fig. 2 is the structural representation of casing section mill reentry sleeve pipe guide structure middle sleeve seeker of the present utility model；
Fig. 3 is the structural representation that in casing section mill reentry sleeve pipe guide structure of the present utility model, spike tubing string is connected by multiple spike pipe lower contacts with multiple second tubular column main body.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is described further by specific embodiment, but following embodiment has absolutely not any restriction to this utility model.
Below with external diameter for this casing section mill reentry sleeve pipe guide structure being specifically described as a example by the 139.7mm internal diameter down-hole sleeve pipe to be taken as 121mm.
As Fig. 1 shows, this casing section mill reentry sleeve pipe guide structure includes that spike tubing string 2 and center are provided with the sleeve pipe seeker 1 of through hole, described sleeve pipe seeker 1 is arranged on bottom casing section mill 4, and the bottom of described sleeve pipe seeker 1 is the fish head on sleeve pipe 3 top to be taken described in be sleeved on；Wherein,
As in figure 2 it is shown, described sleeve pipe seeker 1 includes upper seeker 101, annular table 102 and the lower seeker 103 being sequentially connected with from top to bottom；The external diameter of described annular table 102, described lower seeker 103 and described upper seeker 101 is sequentially reduced；The internal diameter of described upper seeker 101, described lower seeker 103 and described annular table 102 is sequentially reduced, and makes respectively to be formed with an annular boss on described sleeve pipe seeker 1 outer wall and inwall；The upper drift angle of the annular boss on described sleeve pipe seeker 1 outer wall is processed as an inclined-plane；
Specifically, according to the size of down-hole sleeve pipe to be taken, in described sleeve pipe seeker 1, upper seeker 101 external diameter is 140mm, long 0.3m, wall thickness 10mm, and upper end band divergent-cone wall closes up, closing in internal diameter 110mm, uses round steel machining to make；Lower seeker 103 external diameter is 113mm, long 1000mm, wall thickness 7mm, and lower end band divergent-cone wall closes up, and closing in internal diameter is 95mm, and the machining of employing round steel is made；Annular table 102 external diameter is 152mm, and central through hole internal diameter is 75mm, and the steel plate using thickness to be 40mm is processed into, and sets gradually and weld one entirety of shape by upper seeker 101, annular table 102 and lower seeker 103；
As it is shown on figure 3, described spike tubing string 2 includes the first tubular column main body 203, spike pipe top connection 201, multiple the second tubular column main body 204 being arranged on below described spike tubing string 2 and being sequentially connected with from top to bottom and multiple spike pipe lower contact 202；Described spike pipe top connection 201 is set with and is fixed on the upside of described tubular column main body 203；Described first tubular column main body 203 external diameter adapts with described annular table 102 internal diameter, the external diameter of described spike pipe top connection 201 is more than the internal diameter of described annular table 102, and in making described spike tubing string 2 be sleeved on described sleeve pipe the seeker 1 and lower surface of described spike pipe top connection 201 is press-fitted on described sleeve pipe seeker 1 inwall on the upper surface of annular boss that formed；Each described second tubular column main body 204 top and bottom outer wall are equipped with connection external screw thread, each described spike pipe lower contact 202 inwall is equipped with connection female thread, by the described threaded tubing string being fixed as at the bottom of drifting always of spike pipe lower contact 202 between described first tubular column main body 203 with described second tubular column main body 204, between adjacent two described second tubular column main body 203；Described spike pipe top connection 201 is threaded connection suit and is fixed on the upside of described tubular column main body 203；
Specifically, in above-mentioned spike tubing string 2, the external diameter of spike tubing string top connection 201 is 89mm, the external diameter of the first tubular column main body 203 and the second tubular column main body 204 is 73mm, making external diameter is that 73mm the first tubular column main body 203 is installed in the through hole that described annular table 102 center internal diameter is 75mm, and on the upper surface of the annular boss that spike tubing string top connection 201 lower surface that external diameter is 89mm is press-fitted on described sleeve pipe seeker 1 inwall formation, now spike tubing string 2 is in suspension status, and external diameter is 152mm annular table 102, and to cover down-hole external diameter be 139.7mm sleeve pipe top of fish；Wherein, casing section mill 4 internal diameter is more than annular table 102 external diameter of sleeve pipe seeker；The number of the second tubular column main body 204 is relevant to the length of institute's well-sinking.
During use, sleeve pipe seeker is arranged on the outside of spike tubing string 2 with spike tubing string 2 G.I.H, and the lower seeker 103 entering well rear sleeve seeker enters in down-hole sleeve pipe to be taken 3, and the annular table 102 of seeker covers the fish head of down-hole sleeve pipe to be taken 3；Change casing section mill 4 G.I.H again after milling shoe, make casing section mill 4 the most again cover sleeve pipe 3 to be taken by the upper seeker 101 of sleeve pipe seeker and carry out overlapping milling operation.
This casing section mill reentry sleeve pipe guide structure operation principle is as follows:
Wash in operation at petroleum well workover casing pipe sleeve, first by sleeve pipe to be taken 3 size Selection good sleeve pipe seeker 1 size of down-hole, spike tubing string 2 is consecutively connected to the enough lower length to the cement plug shaft bottom being artificially formed by spike pipe lower contact 202 and multiple second tubular column main body, back out the spike pipe lower contact 202 of topmost, spike pipe 2 is made to overlap on tubing seeker and spike pipe top connection 201 of screwing on, note during suit seeker length shorter for upper seeker 101, longer lower seeker 103；Then using elevator by spike pipe 2 G.I.H and to make seeker 103 under sleeve pipe seeker insert in the fish head of down-hole sleeve pipe to be taken 3, now annular table 102 covers the fish head of down-hole sleeve pipe to be taken 3 just；Spike pipe 2 is as far as possible lower to artificial bottom of a well, removes the elevator of spike tubing string, makes spike tubing string become free suspension state.
When covering down-hole and needing to change milling shoe wait the casing section mill 4 taking sleeve pipe 3, trip out the casing section mill 4 covering on down-hole sleeve pipe to be taken 3, when entering casing section mill 4 down after changing the milling shoe of casing section mill 4, make casing section mill 4 the most again cover sleeve pipe 3 to be taken by the upper seeker 101 of sleeve pipe seeker 1 and carry out overlapping milling operation；Wherein, when overlapping milling operation, originally sleeve pipe seeker can be divided into according to specifically used situation and not trip out two kinds of situations: washes after operation puts in place when set and needs to cut and further takes out sleeve pipe seeker 1 in time taking casing operation；When the replacing washover shoe of casing section mill 4, sleeve pipe seeker 1 need not trip out.
Claims (7)
1. a casing section mill is reentried and is used sleeve pipe guide structure, it is characterized in that, be provided with the sleeve pipe seeker (1) of through hole including spike tubing string (2) and center, described sleeve pipe seeker (1) is arranged on casing section mill (4) bottom；Wherein,
Described sleeve pipe seeker (1) includes upper seeker (101), annular table (102) and the lower seeker (103) being sequentially connected with from top to bottom；The external diameter of described annular table (102), described lower seeker (103) and described upper seeker (101) is sequentially reduced；The internal diameter of described upper seeker (101), described lower seeker (103) and described annular table (102) is sequentially reduced, and makes described sleeve pipe seeker (1) outer wall and inwall be respectively formed on an annular boss；
Described spike tubing string (2) includes the first tubular column main body (203) and spike pipe top connection (201)；Described spike pipe top connection (201) is set with and is fixed on the upside of described tubular column main body (203)；Described first tubular column main body (203) external diameter adapts with described annular table (102) internal diameter, the external diameter of described spike pipe top connection (201) is more than the internal diameter of described annular table (102), in making described spike tubing string (2) be sleeved on described sleeve pipe seeker (1) and make on the upper surface of annular boss that the lower surface of described spike pipe top connection (201) is press-fitted on described sleeve pipe seeker (1) inwall be formed.
Casing section mill reentry sleeve pipe guide structure the most according to claim 1, it is characterized in that, also include multiple the second tubular column main body (204) being arranged on below described spike tubing string (2) and being sequentially connected with from top to bottom and multiple spike pipe lower contact (202)；It is equipped with connection external screw thread on each described second tubular column main body (204) top and bottom outer wall, it is equipped with connection female thread at each described spike pipe lower contact (202) inwall, makes between described first tubular column main body (203) with described second tubular column main body (204), between adjacent two described second tubular column main body (203) by the described threaded tubing string being fixed as at the bottom of drifting always of spike pipe lower contact (202)；Described spike pipe top connection (201) is threaded connection suit and is fixed on the upside of described tubular column main body (203).
Casing section mill reentry sleeve pipe guide structure the most according to claim 1, it is characterized in that, the end, upper end of upper seeker (101) of described sleeve pipe seeker (1), the lower end of lower seeker (103) all make end tapered to contract；Formed on described sleeve pipe seeker (1) outer wall the upper drift angle of annular boss be processed as an inclined-plane.
Casing section mill reentry sleeve pipe guide structure the most according to claim 1, it is characterized in that, the external diameter of described annular table (102) is more than sleeve pipe to be taken (3) external diameter, when making taking-up sleeve pipe described annular table (102) lower surface be press-fitted to described in sleeve pipe to be taken (3) upper surface on.
Casing section mill reentry sleeve pipe guide structure the most according to claim 1, it is characterised in that the external diameter of described annular table (102) is less than the internal diameter of described casing section mill (4)；The external diameter of described lower seeker (103) is less than the internal diameter 4～6mm of sleeve pipe to be taken (3).
Casing section mill reentry sleeve pipe guide structure the most according to claim 1, it is characterised in that the length of described upper seeker (101) is less than the length of described lower seeker (103)；A length of the 0.3～0.5m of described upper seeker (101), sidewall wall thickness is 9～10mm；A length of the 1～1.5m of described lower seeker (103), sidewall wall thickness is 7～9mm.
Casing section mill reentry sleeve pipe guide structure the most according to claim 1, it is characterised in that the sidewall wall thickness of described annular table (102) is not less than 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620135344.8U CN205558850U (en) | 2016-02-23 | 2016-02-23 | Cover mills section of thick bamboo reentry and uses sleeve pipe guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620135344.8U CN205558850U (en) | 2016-02-23 | 2016-02-23 | Cover mills section of thick bamboo reentry and uses sleeve pipe guide structure |
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| Publication Number | Publication Date |
|---|---|
| CN205558850U true CN205558850U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620135344.8U Expired - Fee Related CN205558850U (en) | 2016-02-23 | 2016-02-23 | Cover mills section of thick bamboo reentry and uses sleeve pipe guide structure |
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| CN (1) | CN205558850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209273A (en) * | 2018-10-11 | 2019-01-15 | 中石化石油工程技术服务有限公司 | A method of replacement milling shoe |
-
2016
- 2016-02-23 CN CN201620135344.8U patent/CN205558850U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209273A (en) * | 2018-10-11 | 2019-01-15 | 中石化石油工程技术服务有限公司 | A method of replacement milling shoe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210806 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |