CN201778658U - Reaming-while-drilling device used for casing drilling - Google Patents
Reaming-while-drilling device used for casing drilling Download PDFInfo
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- CN201778658U CN201778658U CN2010202825453U CN201020282545U CN201778658U CN 201778658 U CN201778658 U CN 201778658U CN 2010202825453 U CN2010202825453 U CN 2010202825453U CN 201020282545 U CN201020282545 U CN 201020282545U CN 201778658 U CN201778658 U CN 201778658U
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Abstract
The utility model relates to a reaming-while-drilling device used for casing drilling, which is applied to reaming a hole while drilling during the oil and gas drilling. A mandrel is arranged in a center hole of a cylindrical shell; a center hole is arranged in the mandrel, an upper nozzle is fixed at the upper part of the center hole of the mandrel; an annular space is formed between the inner wall of the shell and the outer wall of the mandrel, a compression spring is arranged in the annular space; a rack is processed on the outer wall of the neck reducing part of the mandrel; a rectangular hole is arranged on the outer wall of the shell, a reaming blade is arranged in the rectangular hole of the shell, the reaming blade is fixed in the rectangular hole of the shell through a positioning pin; and the reaming blade can rotate and spread around the positioning pin. The utility model has the advantages of realizing the opening and the closing of the blade through the motion of the blade, ensuring the stability of a drill stem during the operation because gauge teeth at the outer edge of the reaming blade reduce the vibration, and immediately cleaning the shaft bottom because a bit discharge groove on the shell ensures that bits return smoothly. The reaming blade is spread to ream a neck hole until meeting the requirement on a shaft wall cementing process, thus the utility model is suitable for the casing drilling operation.
Description
Technical field
The utility model relates to the oil and gas well drilling technical field, and particularly a kind of drilling well down-hole special tool is the drill-following reamer that a kind of casing drilling is used specifically.
Background technology
Casing Drilling Technique is that drilling well and setting of casing are merged into an operation process, no longer needs conventional round trip, compares with the conventional drilling technology, casing drilling is with the obvious advantage, is mainly reflected in: shorten well construction period, reduce down-hole accident, improve the well control situation, simplify drilling equipment.In the process of casing drilling, the processing of its cutting cutlery has following two kinds of methods:
But the used drill bit of drill bit Casing Drilling Technique must use special soft material to make, and its drilling depth is difficult to estimate, so can only be used for broken ground.And this one-stroke drilling process can not pull out of hole, thereby instruments such as well dynamic motor and MWD can not use with boring, and creeps into so be only limited to the shallow well straight well.In addition, under the deadly condition, meet special formation because of boring, the operations that must pull out of hole such as bit port obstruction, this just may damage the sleeve pipe screw thread, and therefore this technology can not be crept in special shaly formation.These problems are particularly outstanding when boring deep-well or bore the chance bad ground.
By contrast, drill bit recovery type Casing Drilling Technique then can effectively be avoided above-mentioned defective, not only can finish the competent various tasks of conventional drilling technology, the drilling well task of special bad ground such as also can finish Lou, collapse.The downhole tool string that drill bit recovery type casing drilling equipment uses mainly is made up of drill bit, drill-following reamer, locking device, salvaging retracting device etc.Wherein, drill-following reamer is being played the part of very important role in drilling process, and its effect is mainly reflected in following several aspect: (1) as second drill bit in the drilling process, high-ranking military officer's eye is extended to the size that satisfies the well shaft fixing technology requirement; (2) opening and closing of reamer action realizes that bottomhole assembly can get out the eyelet bigger than sleeve pipe, can pass the cover pipe orifice smoothly again; (3) drill string between reamer and pilot bit part can mounting shaft under instruments such as power motor, guiding pipe nipple, MWD, realize the special process drilling well.The quality of reamer performance can produce significant impact to the casing drilling process, even the success or failure of left and right sides operation process.
Chinese patent CN03218329.1 discloses a kind of hydraulic expansion formula PDC reamer, it is characterized in that axle top is equipped with nozzle, and the bottom is a projection, and projection matches with the reaming hole wing.When slurry flows produced enough hydraulic couplings during through nozzle, axle moved down the compression spring of compression below simultaneously.Projection on the axle can promote the reaming hole wing and rotate along steady pin, carries out ream operation outward thereby stretch out shell.The described reaming hole wing of this patent does not possess the function of setting upright; Clean astern nozzle apart from reaming hole wing hypertelorism; Shell does not have chip area.
Chinese patent CN200720173568.9 discloses a kind of casing drilling SPRM, cooperate with the reaming hole wing by rack shaft, when mud flow rate is enough big, the pressure differential rack shaft moves down, spring is compressed in compression on the one hand, drive the wing rotation on the other hand until reaching the operating position, carry out the reaming hole operation thereby start reamer.The described reamer of this patent not tool is set upright function; Reaming hole does not partly have the cleaning hydrophthalmia; Shell does not have chip area.
The utility model content
The purpose of this utility model is: a kind of drill-following reamer that is used for casing drilling is provided, carries out the reaming hole operation by opening at the bottom of the lower going-into-well in the sleeve pipe and under hydraulic action, high-ranking military officer's eye is expanded into the hole diameter that satisfies the well shaft fixing technology requirement; After reaming hole was finished, the reaming hole wing was regained in the housing under the effect of compression spring force, and whole reaming hole device can be salvaged to ground by sleeve pipe.
The technical solution adopted in the utility model is: be used for the drill-following reamer of casing drilling, mainly be made up of housing, top nozzle, axle, compression spring, reaming hole wing, alignment pin and following nozzle, there is screw thread the top and bottom of housing, can be connected on the drill string.It is characterized in that: at the cylindrical housings centre bore axle is arranged, axle upper end outer wall has last sealing ring; Axle upper and lower side outer wall has lower seal.Axle has centre bore, and axle centre bore top is fixed with a top nozzle.Between inner walls and axle outer wall, annular space is arranged, the compression spring is arranged in annular space.Axle can make the compression spring shrink accumulation of energy when lower slider.On axle necking part outer wall, be processed with tooth bar.On the outer wall of housing slot is arranged, the reaming hole wing is arranged in the slot of housing, the reaming hole wing is fixed in by alignment pin in the slot of housing, and the reaming hole wing can rotate around alignment pin and open.In the centre bore of housing lower end, fix a following nozzle by jump ring.Following nozzle is fixed in the centre bore of housing lower end by jump ring, can replace easily.Following jet size is a series of values, can match according to actual needs.
For reducing the vibration of drill string in the reaming hole drilling process,, play stabilization at tungsten carbide button's wear-resistant block below the reaming hole wing and on the housing outer wall.Described wear-resistant block is vertically arranged on the outer wall that embeds housing, and the position of wear-resistant block is in the bottom of reaming hole wing.
For guaranteeing that the landwaste that pilot bit produces in time returns out well, is processed with chip area on the outer wall of housing.The position of chip area is between per two reaming hole wings.
For the pressure in the annular space between housing and the axle is consistent with outside pressure, by-pass prot is arranged, the annular space bottom of the position of by-pass prot between housing and axle on housing wall.
An axle side nozzle is arranged at the bottom of each reaming hole wing.The axle side nozzle is on the wall of axle and relative with the reaming hole wing.
The both sides of described reaming hole wing one end have the PDC cutting teeth respectively, process chip area between the PDC cutting teeth; Reaming hole wing outer rim is circular shape and is fixed with gauge teeth.The reaming hole wing other end has imperfect gear, and imperfect gear is meshed with tooth bar on the axle.Can normally rotate behind the housing for the reaming hole wing is packed into, on the reaming hole wing, leave cannelure.During the rotation of reaming hole wing, the cannelure position does not contact with axle.
Summary is used for the operating principle of the drill-following reamer of casing drilling.Consult Fig. 1.At the bottom of the reamer lower going-into-well, and surface pump is not when starting, and reaming hole wing 6 is in closed condition; A drill bit that waits for claimant contacts turn on pump circulation, enlargement discharge bottom-hole cleaning gradually behind the shaft bottom.The continuous top nozzle 3 installed by axle 4 upper ends of increasing flow, because the throttle effect of liquid produces pressure differential, it is descending that this pressure differential promotes axle 4, compression spring 5 shortens, and cooperates by rack-and-pinion to drive reaming hole wing 6 and open to inner rotary.To the metal cushion contact housing 1 on reaming hole wing 6 tops, reaming hole wing 6 complete openings enter duty, the operation of beginning reaming hole.Mud flow rate reduce or termination of pumping after, it is up that compression spring 5 promotes axles 4, reaming hole wing 6 is regained with gear 16 rotations.The following nozzle 9 of axle 4 belows is used to regulate the mud flow rate that flows to reaming hole wing 6.When following nozzle 9 consumption fluid pressures were big, axle side nozzle 12 pressure were bigger, and the flow that flows to reaming hole wing 6 is bigger; Otherwise following nozzle 9 consumes pressure hour, and the flow that flows to reaming hole wing 6 is less.When waiting to reach the drilling depth requirement and maybe needing to change drilling tool, i.e. termination of pumping, the inner compressed compression spring 5 beginning resiliences of reamer, it is up to promote axle 4, and reaming hole wing 6 resets thereupon.Whole reamer can be recycled to ground through rope salvaging.If it is improper to find in the drilling process that the hydraulic energy of pilot bit and reamer distributes, can determines suitable following series of jets according to actual conditions, and the instrument salvaging is changed to ground.
The beneficial effects of the utility model: the utility model is used for the drill-following reamer of casing drilling, is applicable to the casing drilling operation.Conventional reamer is carried out function and structural improvement and optimization, it is advantageous that having increased housing sets upright function, helped reducing the vibration of drilling tool in the ream operation process, and can effectively clean the landwaste that reaming hole produces, improved wellbore quality.Can regulate and control the hydraulic energy distribution of pilot bit and reamer by changing nozzle simultaneously.
Description of drawings
Fig. 1 is the drill-following reamer structural profile schematic diagram that the utility model is used for casing drilling.
Fig. 2 is reaming hole wing 6 structural upright schematic diagrames.
Among the figure, 1. housing is 2. gone up sealing ring, 3. top nozzle, 4. axle, 5. compression spring, 6. reaming hole wing, 7. alignment pin, 8. sealing ring, 9. descend nozzle, 10. by-pass prot, 11. chip areas, 12. the axle side nozzle, 13. wear-resistant blocks, 14.PDC cutting teeth, 15. gauge teeth, 16. imperfect gears, 17. cannelures.
The specific embodiment
Embodiment 1: with a drill-following reamer that is used for casing drilling is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model is used for the drill-following reamer of casing drilling, mainly form by housing 1, last sealing ring 2, top nozzle 3, axle 4, compression spring 5, reaming hole wing 6, alignment pin 7, lower seal 8, following nozzle 9 and wear-resistant block 13, there is the API drill rod thread top and bottom of housing 1, can be connected on the drill string.At cylindrical housings 1 centre bore an axle 4 is arranged, axle 4 upper end outer walls have last sealing ring 2; Axle 4 upper and lower side outer walls have lower seal 8.Axle 4 has centre bore, and axle 4 centre bore tops are fixed with a top nozzle 3.Between housing 1 inwall and axle 4 outer walls, annular space is arranged, compression spring 5 is arranged in annular space.A by-pass prot 10 is arranged, the annular space bottom of the position of by-pass prot 10 between housing 1 and axle 4 on housing 1 wall.Axle 4 can make compression spring 5 shrink accumulation of energy when lower slider.On axle 4 necking part outer walls, be processed with tooth bar.Two slots are arranged on the outer wall of housing 1, have a reaming hole wing 6, reaming hole wing 6 to be fixed in by alignment pin 7 in the slot of housing 1 in each slot of housing 1, reaming hole wing 6 can open around alignment pin 7 rotations.An axle side nozzle 12 is arranged at the bottom of each reaming hole wing 6.Axle side nozzle 12 is on the wall of axle 4 and relative with reaming hole wing 6.In housing 1 lower end centre bore, fix a following nozzle 9 by jump ring.
Inlaying all carbide alloy wear-resistant blocks 13 below the reaming hole wing 6 and on housing 1 outer wall, wear-resistant block 13 is vertically arranged on the outer wall that embeds housing 1, and the position of wear-resistant block 13 is in the bottom of reaming hole wing 6.On the outer wall of housing 1, be processed with chip area 11.The position of chip area 11 is between two reaming hole wings 6.
Consult Fig. 2.The both sides of reaming hole wing 6 one ends are welded with the chip area that is processed with a depression between PDC cutting teeth 14, the two row PDC cutting teeths 14 respectively; Reaming hole wing 6 outer rims are circular shape and are welded with gauge teeth 15.Reaming hole wing 6 other ends have PDC cutting teeth 14, and imperfect gear 16 is meshed with tooth bar on the axle 4.The number of teeth of imperfect gear 16 is two.On reaming hole wing 6, leave cannelure 17.
Claims (6)
1. drill-following reamer that is used for casing drilling, mainly form by housing (1), top nozzle (3), axle (4), compression spring (5), reaming hole wing (6), alignment pin (7) and following nozzle (9), there is screw thread the top and bottom of housing (1), it is characterized in that: at cylindrical housings (1) centre bore an axle (4) is arranged, axle (4) upper end outer wall has last sealing ring (2); Axle (4) upper and lower side outer wall has lower seal (8); Axle (4) has centre bore, and axle (4) centre bore top is fixed with a top nozzle (3); Between housing (1) inwall and axle (4) outer wall, annular space is arranged, compression spring (5) is arranged in annular space, on axle (4) necking part outer wall, be processed with tooth bar; On the outer wall of housing (1), slot is arranged, reaming hole wing (6) is arranged in the slot of housing (1), reaming hole wing (6) is fixed in the slot of housing (1) by alignment pin (7), reaming hole wing (6) can open around alignment pin (7) rotation, fixes a following nozzle (9) by jump ring in the centre bore of housing (1) lower end.
2. the drill-following reamer that is used for casing drilling according to claim 1, it is characterized in that: tungsten carbide button's wear-resistant block (13) below reaming hole wing (6) and on housing (1) outer wall, described wear-resistant block (13) is vertically arranged on the outer wall that embeds housing (1), and the position of wear-resistant block (13) is in the bottom of reaming hole wing (6).
3. the drill-following reamer that is used for casing drilling according to claim 1 is characterized in that: be processed with chip area (11) on the outer wall of housing (1), the position of chip area (11) is between per two reaming hole wings (6).
4. the drill-following reamer that is used for casing drilling according to claim 1 is characterized in that: on housing (1) wall by-pass prot (10) is arranged, the annular space bottom of the position of by-pass prot (10) between housing (1) and axle (4).
5. according to claim 1,2, the 3 or 4 described drill-following reamers that are used for casing drilling, it is characterized in that: an axle side nozzle (12) is arranged at the bottom of each reaming hole wing (6), and axle side nozzle (12) is on the wall of axle (4) and relative with reaming hole wing (6).
6. according to claim 1,2, the 3 or 4 described drill-following reamers that are used for casing drilling, it is characterized in that: the both sides of described reaming hole wing (6) one ends have PDC cutting teeth (14) respectively, and the PDC cutting teeth is processed chip area between (14); Reaming hole wing (6) outer rim is circular shape and is fixed with gauge teeth (15); Reaming hole wing (6) other end has imperfect gear (16), and imperfect gear (16) is meshed with tooth bar on the axle (4), leaves cannelure (17) on reaming hole wing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202825453U CN201778658U (en) | 2010-08-05 | 2010-08-05 | Reaming-while-drilling device used for casing drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202825453U CN201778658U (en) | 2010-08-05 | 2010-08-05 | Reaming-while-drilling device used for casing drilling |
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| Publication Number | Publication Date |
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| CN201778658U true CN201778658U (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202825453U Expired - Lifetime CN201778658U (en) | 2010-08-05 | 2010-08-05 | Reaming-while-drilling device used for casing drilling |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561951A (en) * | 2012-01-14 | 2012-07-11 | 中国石油天然气集团公司 | Double-stage and double-speed well drilling tool |
| CN102767334A (en) * | 2012-07-10 | 2012-11-07 | 苏州市能工基础工程有限责任公司 | Multifunctional combined drill bit |
| CN102943625A (en) * | 2012-11-30 | 2013-02-27 | 中国石油集团川庆钻探工程有限公司 | Reamer |
| CN103046871A (en) * | 2012-12-30 | 2013-04-17 | 中北大学 | Hydra-mechanical reducing bit broaching while drilling |
| CN103556950A (en) * | 2013-11-19 | 2014-02-05 | 西南石油大学 | Large changing diameter double-drag-blade hole reaming drill |
| CN104120975A (en) * | 2013-04-28 | 2014-10-29 | 中国石油天然气集团公司 | Reaming while drilling tool assembly and well drilling machine |
| CN105178864A (en) * | 2015-09-29 | 2015-12-23 | 中煤第三建设（集团）有限责任公司 | Expanding bit |
| CN107083923A (en) * | 2017-06-20 | 2017-08-22 | 西南石油大学 | Controllable diameter changeable borehole-enlarging drilling tool |
| CN107217991A (en) * | 2017-07-17 | 2017-09-29 | 贵州高峰石油机械股份有限公司 | A kind of deep-well reaming hole method and PDC waterpower reamers |
| CN107780861A (en) * | 2017-09-27 | 2018-03-09 | 海林新科石油耐磨工具有限责任公司 | Casing damaged well diameter enlarging instrument |
| CN108386136A (en) * | 2018-03-20 | 2018-08-10 | 西南石油大学 | Reamer blade hydraulic control executing agency |
| CN110206512A (en) * | 2019-06-24 | 2019-09-06 | 西南石油大学 | Flexible contact type internal surface of sleeve pipe burnisher |
| CN110656888A (en) * | 2019-09-30 | 2020-01-07 | 西南石油大学 | Hydraulic-excitation telescopic controllable type reamer while drilling |
| CN111236845A (en) * | 2020-03-06 | 2020-06-05 | 西华大学 | Novel reaming tool while drilling |
| CN112252983A (en) * | 2020-11-04 | 2021-01-22 | 中国矿业大学(北京) | Hydraulic hole expanding drill bit |
| CN114562210A (en) * | 2022-03-08 | 2022-05-31 | 西南石油大学 | Drilling reamer for oil and gas well |
| CN115874945A (en) * | 2023-03-09 | 2023-03-31 | 陇东学院 | A reaming device for following well logging |
-
2010
- 2010-08-05 CN CN2010202825453U patent/CN201778658U/en not_active Expired - Lifetime
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561951A (en) * | 2012-01-14 | 2012-07-11 | 中国石油天然气集团公司 | Double-stage and double-speed well drilling tool |
| CN102767334A (en) * | 2012-07-10 | 2012-11-07 | 苏州市能工基础工程有限责任公司 | Multifunctional combined drill bit |
| CN102767334B (en) * | 2012-07-10 | 2015-08-05 | 苏州市能工基础工程有限责任公司 | A kind of multifunctional combination drill bit |
| CN102943625B (en) * | 2012-11-30 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司 | Reamer |
| CN102943625A (en) * | 2012-11-30 | 2013-02-27 | 中国石油集团川庆钻探工程有限公司 | Reamer |
| CN103046871A (en) * | 2012-12-30 | 2013-04-17 | 中北大学 | Hydra-mechanical reducing bit broaching while drilling |
| CN104120975A (en) * | 2013-04-28 | 2014-10-29 | 中国石油天然气集团公司 | Reaming while drilling tool assembly and well drilling machine |
| CN103556950B (en) * | 2013-11-19 | 2015-07-15 | 西南石油大学 | Large changing diameter double-drag-blade hole reaming drill |
| CN103556950A (en) * | 2013-11-19 | 2014-02-05 | 西南石油大学 | Large changing diameter double-drag-blade hole reaming drill |
| CN105178864A (en) * | 2015-09-29 | 2015-12-23 | 中煤第三建设（集团）有限责任公司 | Expanding bit |
| CN107083923A (en) * | 2017-06-20 | 2017-08-22 | 西南石油大学 | Controllable diameter changeable borehole-enlarging drilling tool |
| CN107217991A (en) * | 2017-07-17 | 2017-09-29 | 贵州高峰石油机械股份有限公司 | A kind of deep-well reaming hole method and PDC waterpower reamers |
| CN107217991B (en) * | 2017-07-17 | 2023-08-11 | 贵州高峰石油机械股份有限公司 | Deep well reaming method and PDC hydraulic reamer |
| CN107780861A (en) * | 2017-09-27 | 2018-03-09 | 海林新科石油耐磨工具有限责任公司 | Casing damaged well diameter enlarging instrument |
| CN108386136A (en) * | 2018-03-20 | 2018-08-10 | 西南石油大学 | Reamer blade hydraulic control executing agency |
| CN110206512A (en) * | 2019-06-24 | 2019-09-06 | 西南石油大学 | Flexible contact type internal surface of sleeve pipe burnisher |
| CN110206512B (en) * | 2019-06-24 | 2021-10-01 | 西南石油大学 | Flexible contact type casing inner wall cleaning tool |
| CN110656888A (en) * | 2019-09-30 | 2020-01-07 | 西南石油大学 | Hydraulic-excitation telescopic controllable type reamer while drilling |
| CN110656888B (en) * | 2019-09-30 | 2020-07-28 | 西南石油大学 | Hydraulic-excitation telescopic controllable type reamer while drilling |
| CN111236845A (en) * | 2020-03-06 | 2020-06-05 | 西华大学 | Novel reaming tool while drilling |
| CN112252983A (en) * | 2020-11-04 | 2021-01-22 | 中国矿业大学(北京) | Hydraulic hole expanding drill bit |
| CN114562210A (en) * | 2022-03-08 | 2022-05-31 | 西南石油大学 | Drilling reamer for oil and gas well |
| CN114562210B (en) * | 2022-03-08 | 2024-01-19 | 西南石油大学 | Oil gas well reamer while drilling |
| CN115874945A (en) * | 2023-03-09 | 2023-03-31 | 陇东学院 | A reaming device for following well logging |
| CN115874945B (en) * | 2023-03-09 | 2023-04-28 | 陇东学院 | Reaming device for logging while drilling |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |
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| CX01 | Expiry of patent term |