CN104563875A - Guider of channel for connecting broken and staggered casings - Google Patents
Guider of channel for connecting broken and staggered casings Download PDFInfo
- Publication number
- CN104563875A CN104563875A CN201510051304.5A CN201510051304A CN104563875A CN 104563875 A CN104563875 A CN 104563875A CN 201510051304 A CN201510051304 A CN 201510051304A CN 104563875 A CN104563875 A CN 104563875A
- Authority
- CN
- China
- Prior art keywords
- guider
- casing
- cone
- well
- large milling
- 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 claims abstract description 23
- 238000005553 drilling Methods 0.000 abstract description 9
- 239000004568 cement Substances 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract 1
- 230000008093 supporting effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
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
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)
- Earth Drilling (AREA)
Abstract
The invention discloses a guider of a channel for connecting broken and staggered casings. The guider is characterized in that milling teeth are inlaid on the outside of a guiding cone body; a water eye with a circular cooling function is formed in the guiding cone body; a joint is arranged on the upper portion of a length-adjustable guiding rod and is connected with a large milling cone; when a casing is broken or tripped and staggered during well cementation and a drill cannot enter an opening of a next casing, the length of a guiding rod is adjusted according to the distance between an opening of a former casing and an opening of a latter casing; the top of an upper joint is connected with the large milling cone of which the size is matched with that of a well hole; the guider descends to a breakage position of the casing; when the drill rotates and a certain drilling pressure is applied to the breakage position, a guiding cone and the guiding rod of the guider enter the lower casing step by step and support the large milling cone connected to the upper portion of the guiding rod; solidified cement of which the size is matched with that of the guider on a well wall on an axis side of the large milling cone is gradually cut off by the milling teeth of the large milling cone under the supporting effect of the guiding rod and the drill on the upper portion of the large milling cone; well holes of which the sizes are equal to that of the guider are respectively formed in central axis sides of the upper casing and the lower casing; and two well hole axes, namely two well holes, are connected with each other.
Description
Technical field
The present invention relates to petroleum drilling well workover well inner sleeve break fall and the well misplaced be communicated with in.
Background technology
The solid completion of complete sleeve pipe under oil drilling, under find when drilling through well to occur to rupture or dropout rear lower sleeve pipe drops down onto shaft bottom because waiting solidifying process middle sleeve in well cementation or solid completion.Disconnect because of sleeve pipe or the upper and lower two sleeve pipe mouth of pipe centers not heart in the wellbore after threading off, also not on same borehole axis, below the instruments such as the drill bit entered under from upper sleeve, junk mill cannot enter in sleeve pipe, drilling engineering job abort.
Summary of the invention
For above-mentioned Problems existing, object of the present invention has aimed to provide a kind of connection and to have broken the dislocation sleeve channel guide that falls, the break dislocation sleeve channel guide that falls of this connection has ruptured or the problem of dropout sleeve pipe when run between well cementation and waiting-on-cement, when drill bit does not enter in hypomere sleeve pipe, utilization little leading cone below can enter the principle in hypomere sleeve pipe smoothly, leading cone guides the large milling cone followed up progressively to machine away the cement of its tool axis surrounding set below, on after fracture or dropout, lower two cannula center axis limits progressively clean out with the cement of size well, in connection, lower two sleeve pipes, make the axis place of two wells on an axis, ensure that downhole tool can enter lower parts casing pipe relaying follow-up hole operation.
The object of the invention is to complete like this:
One is communicated with the dislocation sleeve channel guide that falls that breaks, primarily of leading cone body, mill teeth, hydrophthalmia, lower pin, upper pin, guide rod and top connection composition, the outside panel of leading cone body has mill teeth, inside has hydrophthalmia, guide rod injects in the endoporus of leading cone body, and connect with lower pin and the upper and lower right-angled intersection of upper pin between leading cone body and guide rod, upper and lower pin two electrical pads is welded and fixed pin, top connection is arranged at guide rod top, and the large milling that is connected with above of top connection is bored.
The beneficial effect of advantage of the present invention and generation is:
1, structure of the present invention is simple, is easy to processing, adopts conventional part to assemble, and easy installing/dismounting changes accessory.
2, enter well tool length to fall according to breaking and the lengthening distance misplaced between upper and lower two sleeve pipes or shorten the length of guide rod and regulate, can meet and bore milling and ream the needs of cement between fracture or the two sleeve pipe fractures of threading off, reach the object of UNICOM's upper and lower sleeve tube boreholes, continue drilling engineering operation, avoid well to scrap.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention.
Detailed description of the invention
As shown in Figure 1, one is communicated with the dislocation sleeve channel guide that falls that breaks, primarily of leading cone body 1, mill teeth 2, hydrophthalmia 3, lower pin 4, upper pin 5, guide rod 6, top connection 7 and large milling cone 8 composition, the outside panel of leading cone body 1 has mill teeth 2, inside has hydrophthalmia 3, guide rod 6 injects in the endoporus of leading cone body 1, connect with lower pin 4 and upper pin about 5 right-angled intersection between leading cone body 1 and guide rod 6, upper and lower pin two electrical pads is welded and fixed pin, top connection 7 is arranged at guide rod top, and the large milling that is connected with above of top connection 7 bores 8.
When run in well cementation ruptured or dropout sleeve pipe dislocation problem, when drill bit does not enter hypomere sleeve opening, according to the length of the good guide rod 6 of distance adjustment of the upper and lower two sleeve pipe mouths of pipe, connect a large milling conformed to borehole size above top connection 7 and bore 8, this instrument lower is to sleeve pipe fracture site, rotation drilling tool also applies certain the pressure of the drill pin 4 and upper pin 5 transmits moment of torsion in top connection 7 to leading cone body 1 at present, mill teeth on mill teeth 2 machines away the obstruction that sleeve pipe incision position stops leading cone body 1, the leading cone body 1 of this instrument is made to enter the guiding entering lower parts casing pipe in the sleeve pipe mouth of pipe of bottom as whole instrument, under the guiding of leading cone body 1, guide rod 6 progressively to enter in lower parts casing pipe and supports large milling cone 8, top connection 7 above institute connect large milling cone 8 axis gradually with bottom cannula center axis near time large milling bore mill teeth on 8 and machine away at guide rod 6 and under the support of 8 top drilling tools is bored in milling greatly the cement that the same tool sizes that 8 axis end hole walls solidify is bored in large milling gradually.Along with leading cone body 1, guide rod 6 and large milling cone 8 enter lower parts casing pipe completely, cement on instrument surrounding well wall is just progressively machined away by the cutting teeth on large milling cone 8, and by the mud of circulation in hydrophthalmia 3, the cement drilling cuttings under cutting is carried into well head, large milling cone 8 just forms the well with tool sizes with the axis limit of guide rod 6, both upper and lower two cannula center axis limits formed the well of same tool sizes, and two borehole axis both two wells are interconnected.
It enters well tool length by the lengthening distance between upper and lower two sleeve pipes or shorten the length of guide rod 6 and adjust.
Claims (1)
1. a connection is broken the dislocation sleeve channel guide that falls, primarily of leading cone body (1), mill teeth (2), hydrophthalmia (3), lower pin (4), upper pin (5), guide rod (6) and top connection (7) composition, it is characterized in that the outside panel of leading cone body (1) has mill teeth (2), inside has hydrophthalmia (3), guide rod (6) injects in the endoporus of leading cone body (1), connect with lower pin (4) and the upper and lower right-angled intersection of upper pin (5) between leading cone body (1) and guide rod (6), upper and lower pin two electrical pads is welded and fixed pin, top connection (7) is arranged at guide rod top, (8) are bored in the large milling that is connected with above of top connection (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510051304.5A CN104563875A (en) | 2014-11-16 | 2015-01-26 | Guider of channel for connecting broken and staggered casings |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410682765 | 2014-11-16 | ||
| CN2014106827658 | 2014-11-16 | ||
| CN201510051304.5A CN104563875A (en) | 2014-11-16 | 2015-01-26 | Guider of channel for connecting broken and staggered casings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104563875A true CN104563875A (en) | 2015-04-29 |
Family
ID=53080862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510051304.5A Pending CN104563875A (en) | 2014-11-16 | 2015-01-26 | Guider of channel for connecting broken and staggered casings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104563875A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119979A (en) * | 2016-08-31 | 2016-11-16 | 广西融安县金鼎制丝有限责任公司 | Fresh cocoon reeling cryogenic vacuum osmosis process |
| CN110700783A (en) * | 2018-07-09 | 2020-01-17 | 中国石油天然气股份有限公司 | Tail pipe milling device and milling system |
-
2015
- 2015-01-26 CN CN201510051304.5A patent/CN104563875A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119979A (en) * | 2016-08-31 | 2016-11-16 | 广西融安县金鼎制丝有限责任公司 | Fresh cocoon reeling cryogenic vacuum osmosis process |
| CN110700783A (en) * | 2018-07-09 | 2020-01-17 | 中国石油天然气股份有限公司 | Tail pipe milling device and milling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
|
| WD01 | Invention patent application deemed withdrawn after publication |