CN202451096U - Oil-water well casing mandrel - Google Patents
Oil-water well casing mandrel Download PDFInfo
- Publication number
- CN202451096U CN202451096U CN 201220033139 CN201220033139U CN202451096U CN 202451096 U CN202451096 U CN 202451096U CN 201220033139 CN201220033139 CN 201220033139 CN 201220033139 U CN201220033139 U CN 201220033139U CN 202451096 U CN202451096 U CN 202451096U
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- China
- Prior art keywords
- tensioner ring
- section reducing
- reducing spin
- ball
- casing
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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 - Lifetime
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Abstract
The utility model relates to an oil-water well casing mandrel, and belongs to the technical field of tools for the deformation repair of oil-water well casings in oil exploration and development processes. The oil-water well casing mandrel consists of a crossover coupling, a ball cover, a ball rod, a center rod, steady segment reducing ball expansion rings, tapered segment reducing ball expansion rings, a bearing steel ball and a tightening cap. The oil-water well casing mandrel is connected with a running string, and then is run into a deformation point of a casing for impact reshaping, and the bearing steel ball upwards moves along rolling slots of the tapered segment reducing ball expansion rings under the action of certain impact force, and then generates radial expansionary force to forcibly expand the diameter of a deformed casing and recover the deformed casing; and in a string pulling process, the bearing steel ball downwards moves, and is reduced along the rolling slots of the tapered segment reducing ball expansion rings, so that the string is ensured to upwards move to leave from the deformed segment of the casing, and is prevented from being clamped, and preparation is made for the next impact.
Description
Technical field
The utility model relates to a kind of Casing Failure reshaper, belongs in the petroleum exploration and development process using technical field of tools to the Casing Failure Deformation Repair.
Background technology
Casing deformation is modal a kind of sleeve pipe damage type of oil field development middle and later periods.The pyriform tube expander is a kind of mechanical shaping device that often uses at present; Can be divided into two kinds of straight channel type and spiral groove types; Therefore its common feature is that cone angle is fixed, and is only applicable to the little single-point Deformation Repair of deflection, and at every turn can only shaping 1.5-2mm; The well section big to deflection then needs multiple trips, increases the activity duration; Simultaneously sleeve pipe by squeeze expand after the elastic restoring force of steel itself make tube expander through after casing size diminish, tube expander is stuck, the formation lock of tool drilling.
ZL200320131750.X discloses the ball reshaper, is made up of top connection, tapered sleeve, mandrel, composite balls and plug, and an end of top connection is provided with drill rod thread; The other end of top connection has been screwed tapered sleeve; Mandrel is pegged graft and is contained in the tapered sleeve, and the end of tapered sleeve has been screwed plug, and tapered sleeve is provided with many circular holes; Circular hole is built-in with composite balls, is provided with astrosphere between mandrel and the plug.Tapered sleeve, mandrel are integrated, if casing buckling or distortion are bigger, fracture causes down-hole accident easily; Composite balls is fixed in the circular hole of tapered sleeve, can not slide, and the shaping amount is little, and is stuck in the sleeve pipe easily.
Summary of the invention
The purpose of the utility model is to overcome the defective that suitable casing deformation scope is little, bit freezing is lacked, is prone to processing well section that above-mentioned prior art exists, and a kind of Casing Failure reshaper is provided.
The purpose of the utility model is achieved in that
The utility model by crossover sub, bulb lid, ball rod, center-pole, stable section reducing spin tensioner ring, an awl section reducing spin tensioner ring, hold a steel ball, be equipped with tight cap and form; Have hydrophthalmia on the outer tube wall of last crossover sub; The groove of the upper end of following crossover sub for matching with the bulb of ball rod, the lower end is threaded with center-pole; The ball rod upper end is threaded with last crossover sub, and the lower end bulb is connected to down in the groove of crossover sub upper end, and the bulb lid is threaded with following crossover sub upper end, and ball rod is fixed; Stable section reducing spin tensioner ring is socketed on the center-pole with an awl section reducing spin tensioner ring step by step, by being equipped with of center-pole lower end tight cap fix.
The beneficial effect of the utility model is: with the utility model be lowered into cover height position after running string is connected and impact shaping; Under certain impact force action; Hold a steel ball along moving and produce radial expansion force on the slot rolling of awl section reducing spin tensioner ring; Force the deformed casing hole enlargement to be restored, guarantee the shaping latus rectum and the straightness accuracy of sleeve pipe; In the process of upper lifting pipe post, hold a steel ball and move down undergauge, thereby guarantee that the up cover that leaves of tubing string becomes section, prevents the card tubing string, and prepares to carry out impact next time along the slot rolling of awl section reducing spin tensioner ring.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the partial enlarged drawing of stable section reducing spin tensioner ring among Fig. 1;
Fig. 3 is the partial enlarged drawing of awl section reducing spin tensioner ring among Fig. 1;
Fig. 4 is the sectional view at A-A place of Fig. 1.
The specific embodiment
Shown in accompanying drawing 1; The utility model by crossover sub, bulb lid 3, ball rod 4, center-pole 5, stable section reducing spin tensioner ring 6, an awl section reducing spin tensioner ring 7, hold a steel ball, be equipped with tight cap 9 and form; Have hydrophthalmia 2 on the outer tube wall of last crossover sub 1a; The groove of the upper end of following crossover sub 1b for matching with the bulb of ball rod 4, the lower end is threaded with center-pole 5; Ball rod 4 upper ends are threaded with last crossover sub 1a, and the lower end bulb is connected to down in the groove of crossover sub 1b upper end, and bulb lid 3 is threaded with following crossover sub 1b upper end, and ball rod 4 is fixing; Stable section reducing spin tensioner ring 6 is socketed on the center-pole 5 with an awl section reducing spin tensioner ring 7 step by step, by being equipped with of center-pole 5 lower ends tight cap 9 fixing.
The outer tube wall of described stable section reducing spin tensioner ring 6 is a cylinder, and its following side has slot rolling, holds in the slot rolling that a steel ball 8a is installed in stable section reducing spin tensioner ring 6.
The slot rolling top of described stable section reducing spin tensioner ring 6 is sphere, and the side is the inclined-plane.
The outer tube wall of described awl section reducing spin tensioner ring 7 is a cone, and its following side has slot rolling, holds a steel ball 8b and is installed in the slot rolling of boring section reducing spin tensioner ring 7.
The slot rolling top of described awl section reducing spin tensioner ring 7 is sphere, and the side is the inclined-plane.
Described stable section reducing spin tensioner ring 6 and awl section reducing spin tensioner ring 7 following sides are along upwards being evenly equipped with eight slot rollings week.
When carrying out casing swage, with the last crossover sub 1a of the utility model be lowered into cover height position after running string is connected and impact shaping.Be lowered to and impact process in, workover fluid circulates through the hydrophthalmia 2 on the last crossover sub 1a outer tube wall, avoids running string to sprain pressing causing down-hole accident.When shaping, hold a steel ball 8b along moving hole enlargement and produce radial expansion force on the slot rolling of awl section reducing spin tensioner ring 7, force the deformed casing hole enlargement to be restored.In the process of upper lifting pipe post, hold a steel ball 8b and move down undergauge, thereby guarantee that the up cover that leaves of tubing string becomes section, prevents the card tubing string along the slot rolling of awl section reducing spin tensioner ring 7.Repeat above-mentioned steps, shaping is repeatedly impacted in cover height position, until the shaping success.
In the shaping process, hold a steel ball 8a, can guarantee the shaping latus rectum and the straightness accuracy of sleeve pipe along moving hole enlargement and produce radial expansion force on the slot rolling of stable section reducing spin tensioner ring 6.
Put in the cover displacement and to occur under the crooked situation, the bulb of ball rod 3 can rotate in the groove of crossover sub 1b upper end down, prevents that center-pole 5 from being sprained disconnected because of reasons such as casing bucklings in impact process.
Claims (4)
1. Casing Failure reshaper; By crossover sub, bulb lid (3), ball rod (4), center-pole (5), stable section reducing spin tensioner ring (6), an awl section reducing spin tensioner ring (7), hold a steel ball, be equipped with tight cap (9) and form; It is characterized in that: upward have hydrophthalmia (2) on the outer tube wall of crossover sub (1a); The groove of the upper end of following crossover sub (1b) for matching with the bulb of ball rod (4), the lower end is threaded with center-pole (5); Ball rod (4) upper end is threaded with last crossover sub (1a), and the lower end bulb is connected to down in the groove of crossover sub (1b) upper end, and bulb lid (3) is threaded with following crossover sub (1b) upper end, and ball rod (4) is fixing; Stable section reducing spin tensioner ring (6) and awl section reducing spin tensioner ring (7) are socketed on the center-pole (5) step by step, are fixed by the tight cap (9) that is equipped with of center-pole (5) lower end.
2. Casing Failure reshaper according to claim 1; It is characterized in that: the outer tube wall of stable section reducing spin tensioner ring (6) is a cylinder; Its following side has slot rolling; Hold in the slot rolling that a steel ball (8a) is installed in stable section reducing spin tensioner ring (6), the slot rolling top of stable section reducing spin tensioner ring (6) is sphere, and the side is the inclined-plane.
3. Casing Failure reshaper according to claim 1 and 2; It is characterized in that: the outer tube wall of awl section reducing spin tensioner ring (7) is a cone; Its following side has slot rolling; Hold a steel ball (8b) and be installed in the slot rolling of boring section reducing spin tensioner ring (7), the slot rolling top of awl section reducing spin tensioner ring (7) is sphere, and the side is the inclined-plane.
4. Casing Failure reshaper according to claim 1 and 2 is characterized in that: described stable section reducing spin tensioner ring (6) and awl section reducing spin tensioner ring (7) following side are along upwards being evenly equipped with eight slot rollings week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220033139 CN202451096U (en) | 2012-02-02 | 2012-02-02 | Oil-water well casing mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220033139 CN202451096U (en) | 2012-02-02 | 2012-02-02 | Oil-water well casing mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451096U true CN202451096U (en) | 2012-09-26 |
Family
ID=46866966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220033139 Expired - Lifetime CN202451096U (en) | 2012-02-02 | 2012-02-02 | Oil-water well casing mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451096U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213862A (en) * | 2014-08-29 | 2014-12-17 | 中国石油天然气股份有限公司 | Casing shaper |
| CN110593794A (en) * | 2019-10-19 | 2019-12-20 | 海塔石油科技有限公司 | Anchoring type hydraulic sleeve shaping tool |
| CN112253029A (en) * | 2020-11-02 | 2021-01-22 | 东北石油大学 | Sleeve shaper |
| CN116066001A (en) * | 2021-11-03 | 2023-05-05 | 中国石油天然气股份有限公司 | Hydraulic shaping method for sleeve-type well |
-
2012
- 2012-02-02 CN CN 201220033139 patent/CN202451096U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213862A (en) * | 2014-08-29 | 2014-12-17 | 中国石油天然气股份有限公司 | Casing shaper |
| CN110593794A (en) * | 2019-10-19 | 2019-12-20 | 海塔石油科技有限公司 | Anchoring type hydraulic sleeve shaping tool |
| CN110593794B (en) * | 2019-10-19 | 2024-04-09 | 海塔石油科技有限公司 | Anchor type hydraulic sleeve shaping tool |
| CN112253029A (en) * | 2020-11-02 | 2021-01-22 | 东北石油大学 | Sleeve shaper |
| CN116066001A (en) * | 2021-11-03 | 2023-05-05 | 中国石油天然气股份有限公司 | Hydraulic shaping method for sleeve-type well |
| CN116066001B (en) * | 2021-11-03 | 2024-04-26 | 中国石油天然气股份有限公司 | Hydraulic shaping method for sleeve-type well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |
|
| CX01 | Expiry of patent term |