CN201007187Y - Split type centralizer - Google Patents
Split type centralizer Download PDFInfo
- Publication number
- CN201007187Y CN201007187Y CNU2007201034759U CN200720103475U CN201007187Y CN 201007187 Y CN201007187 Y CN 201007187Y CN U2007201034759 U CNU2007201034759 U CN U2007201034759U CN 200720103475 U CN200720103475 U CN 200720103475U CN 201007187 Y CN201007187 Y CN 201007187Y
- Authority
- CN
- China
- Prior art keywords
- centralizer
- block
- ring
- split type
- wiper block
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a split centralizer, which is provided to conquer the shortage that the integrated centralizer used in the present directional well and large-displacement well measure work pipe column is uneasy to release the block when meeting the block so as to induce the complication of the underground accident. The utility model comprises a centralizer body (1) and a centralizer block (2), wherein the periphery of the centralizer body (1) is homogeneously distributed with dovetail grooves (6); the dovetail groove (6) is parallel with the axial line of the centralizer body (1), and the centralizer block (2) is arranged inside the dovetail groove (6); the centralizer body (1) disposed on the lower end of the centralizer block (2) is provided with a ring groove; a cutting ring (3) is arranged on the lower end of the centralizer block (2), an inner boss of the cutting ring (3) is blocked in the ring groove of the centralizer body (1), and the circumference of the cutting ring (3) is equipped at least one opening; and a pressing cap (4) is arranged on the lower end pf the cutting ring (3) and fixedly connected with the cutting ring (3). The utility model has the beneficial effects that the structure is simple, the operation is flexible, and the utility model can release the block in time when the pipe column meets the block in order to avoid inducing the heavy-repair work.
Description
Affiliated technical field
The utility model relates to a kind of underground work instrument of oil exploitation, especially relates to the split type centralizer that uses in a kind of directional well, the extended reach well measure working string.
Background technology
In the measure working string of exceptional well (directional well, extended reach well etc.),, be typically equipped with centralizer on the running string in order to make that the instrument go into the well can be placed in the middle to greatest extent and can enter smoothly.The flexible centralizer of centralizer, rigidity centralizer and spiral centralizer etc. commonly used.At present, centralizer commonly used all is all-in-one-piece, and centralizer is difficult to propose when tubing string is met card, thereby makes down-hole accident complicated, and the operation that need carry out large repairs is handled.
Summary of the invention
For the chance card that overcomes the whole centralizer existence of using in existing directional well, the extended reach well measure working string is difficult for unfreezing, cause the complicated deficiency of down-hole accident, the utility model provides a kind of split type centralizer.
In order to achieve the above object, the split type centralizer of the utility model comprises centralizer body, wiper block, is evenly equipped with dovetail groove on the centralizer body excircle, and dovetail groove is parallel with the axis of centralizer body, and wiper block is installed in the dovetail groove; Be positioned on the centralizer body of wiper block lower end annular groove is arranged; Cut and encircle the lower end that is installed in wiper block, the inner convex platform of cutting ring is stuck in the annular groove of centralizer body; Pressure cap is installed in the bottom of cutting ring, and with cut the ring fixedly connected.Cut on the circumference of ring and have 1 opening at least.
The beneficial effect of the split type centralizer of the utility model is, and is simple in structure, flexible operation, and unfreezing in time when tubing string is met card avoids causing heavy repair task.
Description of drawings
Fig. 1 is the structural representation of the split type centralizer of the utility model.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Among the figure: 1. centralizer body, 2. wiper block is 3. cut ring, 4. pressure cap, 5. jackscrew, 6. dovetail groove.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The split type centralizer of the utility model comprises centralizer body 1, wiper block 2, cuts ring 3, pressure cap 4, is evenly equipped with dovetail groove 6 on the excircle of centralizer body 1.Dovetail groove 6 is parallel with the axis of centralizer body 1, and wiper block 2 is installed in the dovetail groove 6, and wiper block 2 can slide along dovetail groove 6.The wiper block of installing in the dovetail groove 62 is formed in pairs by 2 that axially split.It is the top axial location of wiper block 2 that step end face is arranged on the centralizer body 1.On the centralizer body 1 of wiper block 2 lower ends annular groove is arranged; Cut the lower end that ring 3 is installed in wiper block 2, the inner convex platform of cutting ring 3 is stuck in the annular groove of centralizer body 1.Cutting on ring 3 the circumference and have 1 opening at least, can be a split ring, also can be made up of two semi-rings.Pressure cap 4 is installed in cuts ring 3 bottom, and with cut ring 3 and fixedly connected; The interior step of pressure cap 4 will be cut ring 3 and axially and radially fix, and adopt jackscrew 5 usually and cut ring 3 fixing.
Cut ring 3 and select copper material usually for use, determine shear strength, and the size of ring 3 is cut in design according to the operation needs.
Wiper block 2 is positioned at the middle and upper part of centralizer body 1, and the distance between pressure cap 4 lower ends and the centralizer body 1 lower end external screw thread is greater than wiper block 2 and pressure cap 4 length sums.Wiper block 2 quantity are more than 2 pairs or 2 pairs, are generally 2～6 pairs, are generally 4 pairs.
The pressure cap 4 of the split type centralizer of the utility model will cut ring 3 and wiper block 2 is fixing, guarantees that centralizer body 1 and wiper block 2 are not thrown off in the process of going into the well.After measure is finished, carry in the process last, if take place to meet the card situation, the wiper block 2 that needs to throw off centralizer body 1 is when reducing friction and load, the well head overhead traveling crane applies pulling force and will cut ring 3 inner convex platform and cut off, cut ring 3 and glide with pressure cap 4, wiper block 2 moves down the dovetail groove from centralizer body 16 subsequently, until skidding off dovetail groove 6, drop in the well, the external diameter of centralizer reduces, and can guarantee the smooth proposition of tool pipe string like this, proposes with fishing tool wiper block 2 to be salvaged again behind the tubing string.
Claims (9)
1. a split type centralizer comprises centralizer body, wiper block, it is characterized in that: be evenly equipped with dovetail groove (6) on centralizer body (1) excircle, dovetail groove (6) is parallel with the axis of centralizer body (1), and wiper block (2) is installed in the dovetail groove (6); Be positioned on the centralizer body (1) of wiper block (2) lower end annular groove is arranged; Cut ring (3) and be installed in the lower end of wiper block (2), the inner convex platform of cutting ring (3) is located in the annular groove of centralizer body (1); Pressure cap (4) is installed in the bottom of cutting ring (3), and with cut ring (3) and fixedly connected.
2. split type centralizer according to claim 1 is characterized in that: have 1 opening at least on the described circumference of cutting ring (3).
3. split type centralizer according to claim 2 is characterized in that: the described ring (3) of cutting is two semi-rings.
4. according to claim 2 or the described split type centralizer of claim 3, it is characterized in that: the described ring (3) of cutting is a copper material.
5. split type centralizer according to claim 4 is characterized in that: the wiper block of installing in the described dovetail groove (6) (2) is formed in pairs by 2 that axially split.
6. split type centralizer according to claim 5 is characterized in that: described wiper block (2) quantity is more than 2 pairs or 2 pairs.
7. split type centralizer according to claim 6 is characterized in that: described wiper block (2) quantity is 2～6 pairs.
8. according to the arbitrary described split type centralizer of claim 7, it is characterized in that: described wiper block (2) quantity is 4 pairs.
9. according to the arbitrary described split type centralizer of claim 5～8, it is characterized in that: described pressure cap (4) by jackscrew (5) with cut ring (3) and fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201034759U CN201007187Y (en) | 2007-02-06 | 2007-02-06 | Split type centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201034759U CN201007187Y (en) | 2007-02-06 | 2007-02-06 | Split type centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201007187Y true CN201007187Y (en) | 2008-01-16 |
Family
ID=39003134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201034759U Expired - Fee Related CN201007187Y (en) | 2007-02-06 | 2007-02-06 | Split type centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201007187Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930714A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | A kind of coiled tubing underground releasing tool |
| CN107060676A (en) * | 2017-04-21 | 2017-08-18 | 四川川庆石油钻采科技有限公司 | A kind of horizontal well coring tool |
| CN108868659A (en) * | 2018-07-10 | 2018-11-23 | 河南理工大学 | Split type coal mine circle stile |
| CN108868660A (en) * | 2018-07-10 | 2018-11-23 | 河南理工大学 | Split type coal mine Three-edged drill stem centralizer |
| CN109403881A (en) * | 2018-12-26 | 2019-03-01 | 济源微浪石油设备有限公司 | Interchangeable straight wing stabilizer |
| CN109577876A (en) * | 2019-01-15 | 2019-04-05 | 济源华新石油机械有限公司 | Interchangeable oblique wing stabilizer |
-
2007
- 2007-02-06 CN CNU2007201034759U patent/CN201007187Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930714A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | A kind of coiled tubing underground releasing tool |
| CN107060676A (en) * | 2017-04-21 | 2017-08-18 | 四川川庆石油钻采科技有限公司 | A kind of horizontal well coring tool |
| CN108868659A (en) * | 2018-07-10 | 2018-11-23 | 河南理工大学 | Split type coal mine circle stile |
| CN108868660A (en) * | 2018-07-10 | 2018-11-23 | 河南理工大学 | Split type coal mine Three-edged drill stem centralizer |
| CN109403881A (en) * | 2018-12-26 | 2019-03-01 | 济源微浪石油设备有限公司 | Interchangeable straight wing stabilizer |
| CN109403881B (en) * | 2018-12-26 | 2023-12-26 | 济源微浪石油设备有限公司 | Stabilizer with replaceable straight wings |
| CN109577876A (en) * | 2019-01-15 | 2019-04-05 | 济源华新石油机械有限公司 | Interchangeable oblique wing stabilizer |
| CN109577876B (en) * | 2019-01-15 | 2024-02-20 | 济源华新石油机械有限公司 | Stabilizer with changeable inclined wings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: DAGANG OILFIELD GROUP DRILLING TECHNOLOGY RESEARCH INSTITUTE ¬ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Drilling Technology Research Institute of Dagang Oilfield Group Number: 03 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Drilling Technology Research Institute of Dagang Oilfield Group Number: 03 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ¬ TO: DAGANG OILFIELD GROUP DRILLING TECHNOLOGY RESEARCH INSTITUTE ¬ |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20160206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |