CN204960850U - Coiled tubing bores to grind and uses flat junk mill - Google Patents

Coiled tubing bores to grind and uses flat junk mill Download PDF

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Publication number
CN204960850U
CN204960850U CN201520735551.2U CN201520735551U CN204960850U CN 204960850 U CN204960850 U CN 204960850U CN 201520735551 U CN201520735551 U CN 201520735551U CN 204960850 U CN204960850 U CN 204960850U
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China
Prior art keywords
mill
junk mill
hydrophthalmia
junk
flat
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Active
Application number
CN201520735551.2U
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Chinese (zh)
Inventor
卢秀德
李剑秋
宋丹
罗杨
李源源
邹先雄
孙兆岩
黄宇航
郭彪
李睿
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China National Petroleum Corp
CNPC Chuanqing Drilling Engineering Co Ltd
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CNPC Chuanqing Drilling Engineering Co Ltd
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Priority to CN201520735551.2U priority Critical patent/CN204960850U/en
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Abstract

The utility model discloses a coiled tubing bores to grind and uses flat junk mill, including the junk mill body, junk mill body upper end is provided with the top connection, be provided with carbide on the lower extreme terminal surface, junk mill body inner chamber centralize hydrophthalmia, the junk mill body is link up to center hydrophthalmia upper end, and the lower end is closed, junk mill body side be provided with the direction upwards and with the side hydrophthalmia of central hydrophthalmia intercommunication, along radially being provided with the passageway on the carbide terminal surface, be provided with the bottom hydrophthalmia with central hydrophthalmia intercommunication in the last passageway of carbide, it is provided with the ascending passageway of direction to correspond on the junk mill body outer wall, last passageway and the intercommunication of the passageway on the junk mill body outer wall of carbide forms liquid circulation channel. The utility model discloses can realize in straight well, highly deviated well or horizontal well that the bridging plug bores the mill fast to return discharge ground rapidly with the piece, ensure that the pit shaft is unblocked.

Description

Continuous tubing drill mill flat-bottom grind shoes
Technical field
The utility model relates to a kind of continuous tubing drill mill flat-bottom grind shoes, belongs to industrial gas oil underground construction technical field.
Background technology
Can bore bridging plug due to the feature that its volume is little, quality is light, packing is effective, easy brill removes is widely used in extensive multistage pressure break reservoir reconstruction, and realize bridging plug quick drill except so that carrying out various oil test operation is continuous tubing drill mill operation one mainly application, become the important supporting technology can boring bridging plug.
How to realize quick drill mill bridging plug and chip efficiently returned discharging the key factor that ground is the consideration of design junk mill needs.Such as, a kind of underground work junk mill disclosed in China Patent Publication No. 203867505U, its publication date is 2014-10-08.But existing junk mill design biases toward how to improve bores mill efficiency, often ignore and return bits ability, and the latter is the key that bridging plug bores mill technology, because easily form out-of-shape after bridging plug bores mill, the uneven chip of particle diameter, will be deposited in around coiled tubing cause bit freezing if can not be recycled out ground in time.So existing junk mill, junk mill cannot be met can realize bridging plug quick drill mill in straight well, high angle hole or horizontal well, and chip be returned rapidly the instructions for use of discharging ground, cannot guarantee that pit shaft is unimpeded.
Summary of the invention
The purpose of this utility model is the problems referred to above overcoming prior art existence, provides a kind of continuous tubing drill mill flat-bottom grind shoes.The utility model can realize bridging plug quick drill mill in straight well, high angle hole or horizontal well, and chip is returned rapidly discharge ground, guarantees that pit shaft is unimpeded.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of continuous tubing drill mill flat-bottom grind shoes, comprise junk mill body, it is characterized in that: described junk mill body upper end is provided with top connection, lower end surface is provided with carbide alloy, junk mill chamber body forms central ports, the through junk mill body in central ports upper end, lower end closed, junk mill body side is provided with the side hydrophthalmia that direction upwards and with central ports is communicated with, carbide alloy end face has been disposed radially passage, the bottom hydrophthalmia be communicated with central ports is provided with in passage on carbide alloy, on junk mill body outer wall, correspondence is provided with direction passage upwards, channel connection on passage on carbide alloy and junk mill body outer wall forms liquid circulation channel.
Described liquid circulation channel is uniformly distributed and is set to five, and bottom hydrophthalmia correspondence is evenly set to five.
Described top connection and junk mill body are integral type structure or split-type structural.
When described top connection and junk mill body are integral type structure, junk mill body upper part is top connection, and mid diameter is less than lower diameter, and middle part and bottom are by the transition of chamfered transition section.
Described side hydrophthalmia is three, is arranged in chamfered transition section.
Described three side hydrophthalmias between any two angle are 72 °, 144 ° and 144 °.
Described liquid circulation channel extends to chamfered transition section from junk mill body lower part.
Described carbide reactor is welded on junk mill body lower end surface.
Employing the utility model has the advantage of:
1, the utility model can realize bridging plug quick drill mill in straight well, high angle hole or horizontal well, and chip is returned rapidly discharge ground, guarantees that pit shaft is unimpeded.
2, the utility model is at junk mill body bottom portion pile-up welding hard alloy, side effectively solves the problem of present junk mill solids-carrying capacity difference with 3 side hydrophthalmias, help bridging plug chip returns out pit shaft when hydrophthalmia on rear side of bridging plug is grated can spray high-velocity flow manufacture turbulent flow, prevent sand setting bit freezing; Side is uniformly distributed 5 liquid circulation channels in addition, can ensure the abundant circulation of boring mill working solution, improve it and take grittiness.
3, the utility model patent principle clear, be skillfully constructed, structure is simple, volume is little, efficiency is high, strong adaptability, safe and reliable, the brill mill, the cement plug that are applicable to composite bridge plug bore mill etc., and mill operation is bored in the coiled tubing down-hole that can be widely used under all kinds and condition.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the utility model
Fig. 2 is the right TV structure schematic diagram of the utility model
Fig. 3 is the left TV structure schematic diagram of the utility model
Be labeled as in figure: 1, top connection, 2, junk mill body, 3, liquid circulation channel, 4, carbide alloy, 5, side hydrophthalmia, 6, bottom hydrophthalmia, 7, central ports.
Detailed description of the invention
Embodiment 1
In exploitation of oil-gas field process, continuous tubing drill is utilized to grind the continuous oil pipe operation technology of bridging plug, junk mill is the key tool of continuous tubing drill mill technology, and after bridging plug classification pressure break terminates, coiled tubing carries junk mill lower going-into-well cylinder and bores all bridging plugs except making pit shaft recover production capacity as early as possible.
The continuous tubing drill mill flat-bottom grind shoes that the utility model relates to, comprise junk mill body 2, described junk mill body 2 upper end is provided with top connection 1, lower end surface is provided with carbide alloy 4, junk mill body 2 inner chamber forms central ports 7, the through junk mill body 2 in central ports 7 upper end, lower end closed, junk mill body 2 side is provided with the side hydrophthalmia 5 that direction upwards and with central ports 7 is communicated with, carbide alloy 4 end face has been disposed radially passage, the bottom hydrophthalmia 6 be communicated with central ports 7 is provided with in passage on carbide alloy 4, on junk mill body 2 outer wall, correspondence is provided with direction passage upwards, channel connection on passage on carbide alloy 4 and junk mill body 2 outer wall forms liquid circulation channel 3.
In the present embodiment, described liquid circulation channel 3 is uniformly distributed and is set to five, and bottom hydrophthalmia 6 correspondence is evenly set to five.
In the present embodiment, described top connection 1 is integral type structure or split-type structural with junk mill body 2.
In the present embodiment, when described top connection 1 is integral type structure with junk mill body 2, junk mill body 2 top is top connection, and mid diameter is less than lower diameter, and middle part and bottom are by the transition of chamfered transition section.
In the present embodiment, described side hydrophthalmia 5 is three, is arranged in chamfered transition section.
In the present embodiment, described three side hydrophthalmias 5 between any two angle are 72 °, 144 ° and 144 °.
In the present embodiment, described liquid circulation channel 3 extends to chamfered transition section from junk mill body 2 bottom.
In the present embodiment, described carbide alloy 4 heap is welded on junk mill body 2 lower end surface.
Embodiment 2
The present embodiment is described further the utility model by reference to the accompanying drawings.
See accompanying drawing, the utility model is made up of top connection 1, junk mill body 2, liquid circulation channel 3, carbide alloy 4, side hydrophthalmia 5, bottom hydrophthalmia 6 and central ports 7.Top connection 1 and junk mill body 2 are in integral structure, junk mill body 2 side is uniformly distributed 5 liquid circulation channels 3 and 3 side hydrophthalmias 5, side hydrophthalmia 5 between any two angle is 72 °, 144 ° and 144 °, bottom pile-up welding hard alloy 4, be uniformly distributed 5 bottom hydrophthalmias 6 above, side hydrophthalmia 5 is communicated with by central ports 7 with bottom hydrophthalmia 6.
The bridging plug chip ground by carbide alloy 4 by the working solution of bottom hydrophthalmia 6 is returned on well head through liquid circulation channel 3, and the turbulent flow that side hydrophthalmia 5 injection is formed improves on chip returns ability, avoids sand setting bit freezing.

Claims (8)

1. a continuous tubing drill mill flat-bottom grind shoes, comprise junk mill body (2), it is characterized in that: described junk mill body (2) upper end is provided with top connection (1), lower end surface is provided with carbide alloy (4), junk mill body (2) inner chamber forms central ports (7), the through junk mill body (2) in central ports (7) upper end, lower end closed, junk mill body (2) side is provided with the side hydrophthalmia (5) that direction upwards and with central ports (7) is communicated with, carbide alloy (4) end face has been disposed radially passage, the bottom hydrophthalmia (6) be communicated with central ports (7) is provided with in passage on carbide alloy (4), on junk mill body (2) outer wall, correspondence is provided with direction passage upwards, channel connection on passage on carbide alloy (4) and junk mill body (2) outer wall forms liquid circulation channel (3).
2. continuous tubing drill mill flat-bottom grind shoes according to claim 1, it is characterized in that: described liquid circulation channel (3) is uniformly distributed and is set to five, bottom hydrophthalmia (6) correspondence is evenly set to five.
3. continuous tubing drill mill flat-bottom grind shoes according to claim 2, is characterized in that: described top connection (1) and junk mill body (2) are integral type structure or split-type structural.
4. continuous tubing drill mill flat-bottom grind shoes according to claim 3, it is characterized in that: when described top connection (1) and junk mill body (2) are for integral type structure, junk mill body (2) top is top connection (1), mid diameter is less than lower diameter, and middle part and bottom are by the transition of chamfered transition section.
5. continuous tubing drill mill flat-bottom grind shoes according to claim 4, is characterized in that: described side hydrophthalmia (5) is three, is arranged in chamfered transition section.
6. continuous tubing drill mill flat-bottom grind shoes according to claim 5, is characterized in that: described three side hydrophthalmias (5) between any two angle are 72 °, 144 ° and 144 °.
7. continuous tubing drill mill flat-bottom grind shoes according to claim 6, is characterized in that: described liquid circulation channel (3) extends to chamfered transition section from junk mill body (2) bottom.
8. continuous tubing drill mill flat-bottom grind shoes according to claim 7, is characterized in that: described carbide alloy (4) heap is welded on junk mill body (2) lower end surface.
CN201520735551.2U 2015-09-22 2015-09-22 Coiled tubing bores to grind and uses flat junk mill Active CN204960850U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520735551.2U CN204960850U (en) 2015-09-22 2015-09-22 Coiled tubing bores to grind and uses flat junk mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520735551.2U CN204960850U (en) 2015-09-22 2015-09-22 Coiled tubing bores to grind and uses flat junk mill

Publications (1)

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CN204960850U true CN204960850U (en) 2016-01-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2626496C1 (en) * 2016-05-31 2017-07-28 Публичное акционерное общество "Татнефть" имени В.Д. Шашина Plugs removing method from perforated shank holes while pumping horizontal well in bitumen deposit
CN112412377A (en) * 2020-11-20 2021-02-26 北京探矿工程研究所 High-efficient diamond composite grind shoe for geological investigation of horizontal directional drilling engineering

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2626496C1 (en) * 2016-05-31 2017-07-28 Публичное акционерное общество "Татнефть" имени В.Д. Шашина Plugs removing method from perforated shank holes while pumping horizontal well in bitumen deposit
CN112412377A (en) * 2020-11-20 2021-02-26 北京探矿工程研究所 High-efficient diamond composite grind shoe for geological investigation of horizontal directional drilling engineering

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20200921

Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No.

Patentee after: CHINA NATIONAL PETROLEUM Corp.

Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd.

Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology

Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd.