CN102486083B - Well drilling corrector - Google Patents
Well drilling corrector Download PDFInfo
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- CN102486083B CN102486083B CN201010582173.0A CN201010582173A CN102486083B CN 102486083 B CN102486083 B CN 102486083B CN 201010582173 A CN201010582173 A CN 201010582173A CN 102486083 B CN102486083 B CN 102486083B
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Abstract
The invention discloses a well drilling corrector comprising a tire body, scar piece body rings and alloy drilling teeth, wherein the tire body is cylindrical; the scar piece body rings are surrounded on the side wall of the tire body; each scar piece body ring comprises at least two scar piece bodies; a gap which is parallel to an axis of the tire body is reserved between the two scar piece bodies; the outline of the transverse cross section of each scar piece body gradually expands from the side wall outwards; the point end of the outline faces to a drilling direction; and the alloy drilling teeth are nested in the scar piece bodies and are exposed towards a direction of a drilling wall. The well drilling corrector provided by the invention has the advantages of low cost and high working efficiency and can carry out well workover in place for one time so as to not only reduce the labor intensity of workers but also reduce the material consumption. Furthermore, the well drilling corrector provided by the invention is high in security coefficient and can effectively prevent negative pressure in a drilling hole from suction of the drilling wall, so that a petroleum sleeve is further ensured to be smoothly embedded.
Description
Technical field
The embodiment of the present invention relates to drilling tool structure technology, relates in particular to a kind of Well drilling corrector.
Background technology
In recent years, along with the drilling well of gas pressure relief ground extraction is in the popularization gradually of Huainan Mining Area, also more and more higher to the requirement of wellbore construction technique.In actual process, what conventionally adopt is that rock bit is carried out drilling well, and the borehole wall forming is like this random coil shape conventionally, probably hinders the underlying of petroleum casing pipe.And, in the time carrying out darker drilling well, because drilling time is long, generally need about one month, can cause the clay undergauge on new stratum, be less than reaming aperture, can cause successfully underlying of petroleum casing pipe to put in place equally like this.Therefore, in order to ensure petroleum casing pipe underlying smoothly, before underlying petroleum casing pipe, need to adopt Well drilling corrector to revise borehole wall, make borehole wall become straight smooth, with guarantee petroleum casing pipe smoothly underlying put in place.
Traditional Well drilling corrector is generally front end and has connected the sleeve pipe that rock bit and diameter are greater than the petroleum casing pipe that needs underlying.But, the speed that adopts rock bit to revise drill hole wall is very slow, operating efficiency is lower, not only can produce due to run into lean clay or easily occur when undergauge stratum suppress pump, inhale and bore phenomenon, cause normally working, and the probability that the disposable underlying of petroleum casing pipe puts in place is very low, , because the effect of borehole wall correction is not ideal enough, petroleum casing pipe can not put in place in disposable underlying, petroleum casing pipe need to be brought up, underlying petroleum casing pipe again after drilling well hole wall is revised again, a large amount of manpower and materials are so not only wasted, and extend the production cycle, cause the significantly rising of cost of production.In addition, the price of rock bit is extremely expensive, and more than being generally tens thousand of units, this can cause the increase of cost of production equally.
Therefore, need a kind of new Well drilling corrector, can revise preferably drill hole wall, increase work efficiency and safety, reduce production costs.
Summary of the invention
The invention provides a kind of Well drilling corrector, revise in order to solve in prior art the defect that drilling time is long, cost is high, realize high workload efficiency, high security and the low production cost of revising drill hole wall.
The embodiment of the present invention provides a kind of Well drilling corrector, comprising: carcass, and being shaped as of described carcass is cylindric; Scar lamellar body ring, around being arranged on the sidewall of described carcass, each described scar lamellar body ring comprises at least 2 scar lamellar bodies, between each described scar lamellar body, there is the space that is parallel to described carcass axis, the lateral cross section outline line of each described scar lamellar body is outwards expansion gradually from sidewall, and described outline line tip is towards drilling direction; Alloy bores tooth, and described alloy brill tooth is embedded in described scar lamellar body and towards drill hole wall direction and exposes.
Well drilling corrector as above, preferably, the number of described scar lamellar body ring is at least 3.
Well drilling corrector as above, preferably, described alloy bores tooth and is placed near on the scar lamellar body ring of drilling direction.
Well drilling corrector as above, preferably, each described scar lamellar body forms by more than 2 scar sheet is superimposed, and is being adjacent to described sidewall to the direction away from described sidewall, and internal layer scar sheet exceeds the scope of outer scar sheet.
Well drilling corrector as above, preferably, each described scar lamellar body comprises 3 scar sheets.
Well drilling corrector as above, preferably, in each described scar lamellar body ring, the line of the central point of each scar lamellar body is regular polygon.
Well drilling corrector as above, preferably, the diameter of described carcass is 273mm, the thickness of described scar lamellar body in described drill hole wall direction is at least 47mm.
Well drilling corrector as above, preferably, the length of described carcass is 9000～10000mm.
Well drilling corrector as above, preferably, the width in described space is at least 20mm.
Well drilling corrector provided by the invention, with low cost, operating efficiency is high, can a well workover put in place, not only reduce workman's labour intensity but also reduced the consumption of material, and safety factor is high, can effectively prevent the suction of interior negative pressure to drill hole wall of holing, further ensure the smooth underlying of petroleum casing pipe.
Brief description of the drawings
Figure 1A is according to the sectional drawing of the Well drilling corrector of the embodiment of the present invention;
Figure 1B is according to the sectional view of the Well drilling corrector of the embodiment of the present invention.
Detailed description of the invention
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Well drilling corrector according to the present invention comprises that carcass, scar lamellar body ring and alloy bore tooth.
Wherein, being shaped as of carcass is cylindric, its diameter can be more than or equal to the diameter of the petroleum casing pipe that needs underlying, be preferably direct employing and the sleeve pipe of petroleum casing pipe same size that needs underlying, can ensure that like this petroleum casing pipe of follow-up same size also can put in place in disposable underlying in the situation that this corrector can underlying puts in place.Carcass length is generally 9000～10000mm.
Scar lamellar body ring is around being arranged on the sidewall of carcass, and each scar lamellar body ring comprises at least 2 scar lamellar bodies.This scar lamellar body ring is for expanding the external diameter of Well drilling corrector, to ensure that the diameter of the boring that Well drilling corrector revised is greater than the diameter of carcass, make petroleum casing pipe smoothly underlying put in place.The lateral cross section outline line of each scar lamellar body is outwards expansion gradually from sidewall, outline line tip is towards drilling direction, such shape is conducive to Well drilling corrector advances along the direction in original hole, and direction does not have deviation, there will not be the situation in " trouble hole ".And the shape of such scar lamellar body is also easy to advance to drilling direction than the scar lamellar body of other shape.Preferably, in the time that the number of scar lamellar body is at least 3, the line in each scar lamellar body ring between the central point of each scar lamellar body is regular polygon.
The number of scar lamellar body ring can be 1, and now the length of scar lamellar body can be consistent with the length of carcass.Preferably, scar lamellar body can be many rows and distribute on the sidewall of carcass,, has multiple scar lamellar body rings that is.The number of scar lamellar body ring is at least 3, and this is the drilling direction that contributes to fixing Well drilling corrector due to 3 scar lamellar body rings, in case the hole section expanding departs from former drill center, even departs from former bore position, occurs " trouble hole " phenomenon.
Between each scar lamellar body, there is the space that is parallel to carcass axis.Space for alleviate by between Well drilling corrector and drill hole wall due to the viscosity that exists circulation fluid to bring.This is because Well drilling corrector can add circulation fluid so that the foreign material such as the clay of revising from drill hole wall or rock chip are taken on ground in the course of the work.Circulation fluid pours into and discharges between Well drilling corrector and drill hole wall from Well drilling corrector, if there is not space between scar lamellar body, circulation fluid cannot be discharged, and probably can cause Well drilling corrector cisco unity malfunction., Well drilling corrector can not continue to repair hole downwards, can not be brought up, and causes scrapping of boring.The width in space is preferably at least 20mm.All gap lengths can all not equate or not etc.
Scar lamellar body can be made up of separately the scar sheet of whole piece, and preferably, scar lamellar body is selected 2 or 2 above superimposed formations of scar sheet, and is being adjacent to sidewall to the direction away from sidewall, and internal layer scar sheet exceeds the scope of outer scar sheet.
Alloy bores tooth and is embedded in scar lamellar body, and exposes towards revised drill hole wall direction.In the time that scar lamellar body is made up of multiple scar sheets, alloy bores tooth and is embedded on each scar sheet and exposes alloy towards drill hole wall direction and bore tooth.Alloy bores tooth and is used for putting down the irregular drill hole wall of helical form, ensures the smooth underlying of carcass.Adopt alloy to bore tooth and substitute the rotary drill tooth in traditional handicraft, not only reduced cost of production, and avoided the de-phenomenon of getting rid of that rotary drill tooth is prone in cleaning bottom of hole.Preferably, alloy bores on the scar lamellar body ring that tooth is only placed in the most close drilling direction.
Below, by the drilling well trimmer further illustrating by specific embodiment according to an aspect of the present invention.
As shown in Figure 1A and 1B, be respectively according to the sectional drawing of the Well drilling corrector of the embodiment of the present invention and sectional view.The carcass 101 of Well drilling corrector 100 is consistent with the diameter of petroleum casing pipe that will be down-set to boring, is the petroleum casing pipe of diameter 273mm, and wall thickness is 10.16mm, and length is 10000mm.On the sidewall of carcass 101, have upper, middle and lower three and arrange scar lamellar body ring, every row's scar lamellar body ring has respectively ring-shaped distributed 3 scar lamellar bodies 102, and the line of the central point of these 3 scar lamellar bodies 102 forms an equilateral triangle.3 scar lamellar bodies 102 so had both enough ensured that " trouble hole " situation did not appear in Well drilling corrector, and the use amount that can save as best one can again scar sheet, has saved cost.
Each scar lamellar body 102 is at least 47mm towards the thickness of drill hole wall direction, makes the largest outer diameter of Well drilling corrector 100 extend at least 320mm, and it is that the smooth underlying of the petroleum casing pipe of 273mm puts in place that such diameter width is conducive to follow-up diameter.
Between each scar lamellar body in same scar lamellar body ring, have the space 103 that is parallel to carcass 101 axis, width is 20mm.Each scar lamellar body 102 stacks gradually formation by 3 scar sheets, by near carcass 101 sidewalls in the direction away from carcass 101 sidewalls, internal layer scar sheet exceeds the scope of outer scar sheet, and the lateral cross section outline line of scar lamellar body 102 from sidewall its outwards gradually expansion, outline line tip is towards drilling direction.On the scar lamellar body ring of the close drilling direction on carcass 101 sidewalls, embedded alloy bores tooth (not shown) and exposes alloy towards the direction of drill hole wall and bore tooth, and the material that alloy bores tooth is chosen as diamondite.Because diamondite is very hard, can revise well drill hole wall, but it is very crisp again simultaneously, is embedded in scar sheet, can protect to greatest extent alloy to bore tooth.Only on the scar lamellar body near in the scar lamellar body ring of drilling direction, embedded alloy bores the quality that tooth can either ensure that correction is holed effectively, can farthest reduce again the quantity that uses alloy to bore tooth, to save production cost.
The Well drilling corrector of making according to above-described embodiment, with low cost, operating efficiency is high, can a well workover put in place, not only reduce workman's labour intensity but also reduced the consumption of material, and safety factor is high, can effectively prevent that corrector from lifting the suction of formation negative pressure to drill hole wall, further ensured the smooth underlying of petroleum casing pipe.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a Well drilling corrector, is characterized in that, comprising:
Carcass, being shaped as of described carcass is cylindric;
Scar lamellar body ring, around being arranged on the sidewall of described carcass, each described scar lamellar body ring comprises at least 2 scar lamellar bodies, between each described scar lamellar body, there is the space that is parallel to described carcass axis, the lateral cross section outline line of each described scar lamellar body is outwards expansion gradually from sidewall, and described outline line tip is towards drilling direction;
Alloy bores tooth, and described alloy brill tooth is embedded in described scar lamellar body and towards drill hole wall direction and exposes;
The number of described scar lamellar body ring is at least 3;
Each described scar lamellar body forms by more than 2 scar sheet is superimposed, and is being adjacent to described sidewall to the direction away from described sidewall, and internal layer scar sheet exceeds the scope of outer scar sheet.
2. Well drilling corrector according to claim 1, is characterized in that, described alloy bores tooth and is placed near on the scar lamellar body ring of drilling direction.
3. Well drilling corrector according to claim 1, is characterized in that, each described scar lamellar body comprises 3 scar sheets.
4. Well drilling corrector according to claim 3, is characterized in that, in each described scar lamellar body ring, the line of the central point of each scar lamellar body is regular polygon.
5. Well drilling corrector according to claim 1 and 2, is characterized in that, the diameter of described carcass is 273mm, and the thickness of described scar lamellar body in described drill hole wall direction is at least 47mm.
6. Well drilling corrector according to claim 1 and 2, is characterized in that, the length of described carcass is 9000～10000mm.
7. the corrector that creeps into according to claim 1 and 2, is characterized in that, the width in described space is at least 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010582173.0A CN102486083B (en) | 2010-12-06 | 2010-12-06 | Well drilling corrector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010582173.0A CN102486083B (en) | 2010-12-06 | 2010-12-06 | Well drilling corrector |
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| Publication Number | Publication Date |
|---|---|
| CN102486083A CN102486083A (en) | 2012-06-06 |
| CN102486083B true CN102486083B (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010582173.0A Active CN102486083B (en) | 2010-12-06 | 2010-12-06 | Well drilling corrector |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840173B (en) * | 2016-05-18 | 2023-09-08 | 中石化胜利石油工程有限公司培训中心 | Drilling corrector and method |
| CN111456725B (en) * | 2020-04-30 | 2024-01-16 | 中国石油天然气集团有限公司 | Experimental device for be used for simulating to draw and grout |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679339Y (en) * | 2004-02-06 | 2005-02-16 | 盘锦金盘科技有限责任公司 | Composite positioning and orienting tool for external slope of drilling well |
| GB2468678A (en) * | 2009-03-18 | 2010-09-22 | Roxbury Patents Ltd | A drill with a sacrificial drill head |
| CN201896584U (en) * | 2010-12-06 | 2011-07-13 | 淮南矿业(集团)有限责任公司 | Well drilling corrector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2460096B (en) * | 2008-06-27 | 2010-04-07 | Wajid Rasheed | Expansion and calliper tool |
| US8201642B2 (en) * | 2009-01-21 | 2012-06-19 | Baker Hughes Incorporated | Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies |
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2010
- 2010-12-06 CN CN201010582173.0A patent/CN102486083B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679339Y (en) * | 2004-02-06 | 2005-02-16 | 盘锦金盘科技有限责任公司 | Composite positioning and orienting tool for external slope of drilling well |
| GB2468678A (en) * | 2009-03-18 | 2010-09-22 | Roxbury Patents Ltd | A drill with a sacrificial drill head |
| CN201896584U (en) * | 2010-12-06 | 2011-07-13 | 淮南矿业(集团)有限责任公司 | Well drilling corrector |
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| CN102486083A (en) | 2012-06-06 |
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