CN205503029U - Inner tube for oil drilling - Google Patents
Inner tube for oil drilling Download PDFInfo
- Publication number
- CN205503029U CN205503029U CN201620132379.6U CN201620132379U CN205503029U CN 205503029 U CN205503029 U CN 205503029U CN 201620132379 U CN201620132379 U CN 201620132379U CN 205503029 U CN205503029 U CN 205503029U
- Authority
- CN
- China
- Prior art keywords
- inner core
- endoporus
- left end
- core body
- wire hole
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an inner tube for oil drilling, it includes inner tube body (1), one axial hole (2) have been seted up to the left end of inner tube body (1), the right -hand member of inner tube body (1) is provided with one angular positioning step (3), the bottom of hole (2) is provided with three threading hole (4) and one interior lumen pore (5), the left end of threading hole (4) is provided with a reaming (6), the internal thread has been seted up to the left end of reaming (6), the left end of inner tube body (1) still is provided with first step (7), the external screw thread has been seted up on first step (7), screw hole (8) and a plurality of waist type holes (9) and first -class wire casing (10) have still been offered on the circumference of the left end of inner tube body (1), arc wall (11) have been offered at inner tube body (1) right -hand member, arc wall (11) and streamline groove (10) intercommunication. The beneficial effects of the utility model are that: it has long service life, easily installs and install fixed firm advantage.
Description
Technical field
This utility model relates to the parts of oil-well drilling equipment, particularly a kind of oil drilling inner core.
Background technology
Oil is a kind of thickness, dark brown liquid.There is petroleum storage upper crustal some areas.Main component is the mixture of various alkane, cycloalkane, aromatic hydrocarbon.The one-tenth oil machine reason of oil has biogenic deposit to become oil and petrochemical industry two kinds of theories of oil, and the former more widely accepts, it is believed that oil be ancient times ocean or lake in biology formed through very long evolution, belong to biogenic deposit and become oil, non-renewable；The latter thinks that oil is to be generated by the carbon of itself in the earth's crust, unrelated with biology, renewable.Oil is mainly used as fuel oil and gasoline, is also many chemical industries, such as the raw material of solution, chemical fertilizer, insecticide and plastics etc..
And along with the progress of science and technology, the usage amount of oil has occurred the lifting of expansion type, and be applied to the most on a large scale in productive life at new forms of energy, oil is still that an important energy, therefore the demand of oil is only augmented and is subtracted by country, and in oil exploitation, needs to use various equipment, such as center electric pump pipe column, permanent tubing string etc., and these are required for using an inner core.
Utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, it is provided that a kind of oil drilling inner core.
nullThe purpose of this utility model is achieved through the following technical solutions: a kind of oil drilling inner core，It includes inner core body，The left end of described inner core body offers an axial bore，The right-hand member of inner core body is provided with an angular positioning step，The bottom of endoporus is provided with three wire holes and a lumen orifice，Described endoporus connects with lumen orifice，And run through whole inner core body，Described lumen orifice is provided with an arc convex，The axle center of arc convex and the axis coinciding of inner core body，The axial line of one of them wire hole is vertical with the plane at angular positioning step place with the plane that the axial line of arc convex forms，And two other wire hole lays respectively at the both sides of this wire hole，And it is identical with the phase contrast between this wire hole，The left end of described wire hole is provided with a reaming，The left end of reaming offers female thread，The left end of described inner core body is additionally provided with first step，External screw thread is offered on described first step，The circumference of the left end of inner core body is further opened with screw hole and multiple waist-shaped hole and first-class wire casing，Arcuate groove is offered at inner core body right-hand member，Described arcuate groove connects with streamline groove，It is additionally provided with a square groove in the left part of streamline groove.
The wire hole of described both sides is 68.5 ° with the phase contrast of middle wire hole
Described endoporus is divided into the first endoporus and the second endoporus, and the first endoporus is positioned on the left of the second endoporus, and the diameter of the first endoporus is more than the diameter of the second endoporus.
The bottom of described reaming and the junction of wire hole are provided with 45 ° of chamferings.
Described waist-shaped hole is four, and is evenly distributed on same circumference.
This utility model has the advantage that inner core of the present utility model, simple in construction, it is provided with streamline groove and arcuate groove, make in drilling process, oil can be guided by streamline groove and arcuate groove, thus reduce the resistance that inner core is suffered in rotation process, thus the abrasion of tube outer surface in reducing, improve its service life, and on inner core, it is provided with multiple waist-shaped hole, it is capable of during installation accurately fixedly mounting, thus reduces the risk that inner core loosens, thus ensure that steadily effectively carrying out of drilling well.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is the cross-sectional schematic of A-A in Fig. 1
Fig. 3 is the cross-sectional schematic of B-B in Fig. 1
In figure, 1-inner core body, 2-axial bore, the angular positioning step of 3-, 4-wire hole, 5-lumen orifice, 6-reaming, 7-first step, 8-screw hole, 9-waist-shaped hole, 10-streamline groove, 11-arcuate groove, 12-square groove, 21-the first endoporus, 22-the second endoporus, 51-arc convex.
Detailed description of the invention
Being further described this utility model below in conjunction with the accompanying drawings, protection domain of the present utility model is not limited to the following stated:
nullAs shown in Fig. 1 ~ Fig. 3，A kind of oil drilling inner core，It includes inner core body 1，The left end of described inner core body 1 offers an axial bore 2，The right-hand member of inner core body 1 is provided with an angular positioning step 3，The bottom of endoporus 2 is provided with three wire holes 4 and a lumen orifice 5，Described endoporus 2 connects with lumen orifice 5，And run through whole inner core body 1，Described lumen orifice 5 is provided with an arc convex 51，The axle center of arc convex 51 and the axis coinciding of inner core body 1，The axial line of one of them wire hole 4 is vertical with the plane at angular positioning step 3 place with the plane that the axial line of arc convex 51 forms，And two other wire hole 4 lays respectively at the both sides of this wire hole 4，And it is identical with the phase contrast between this wire hole 4，The left end of described wire hole 4 is provided with a reaming 6，The left end of reaming 6 offers female thread，The left end of described inner core body 1 is additionally provided with first step 7，External screw thread is offered on described first step 7，The circumference of the left end of inner core body 1 is further opened with screw hole 8 and multiple waist-shaped hole 9 and first-class wire casing 10，Arcuate groove 11 is offered at inner core body 1 right-hand member，Described arcuate groove 11 connects with streamline groove 10，A square groove 12 it is additionally provided with in the left part of streamline groove 10.
In the present embodiment, the wire hole 4 of described both sides is 68.5 ° with the phase contrast of middle wire hole 4, so that wire hole 4 is symmetrical arranged, is therefore adding man-hour, convenient mounting and clamping.
In the present embodiment, described endoporus 2 is divided into the first endoporus 21 and the second endoporus 22, and the first endoporus 21 is positioned on the left of the second endoporus 22, and the diameter of the first endoporus 21 is more than the diameter of the second endoporus 22.
In the present embodiment, the bottom of described reaming 6 and the junction of wire hole 4 are provided with 45 ° of chamferings, because arranging the chamfering of 45 °, so that when wire hole 4 and reaming 6 Assembly part, it is possible to part perfect cooperation, do not have bottom gap, thus reduce abrasion, increase the service life of inner core.
In the present embodiment, described waist-shaped hole 9 is four, and is evenly distributed on same circumference, four waist-shaped holes 9 are set, by multi-faceted location, inner core can be made to be connected with oil-well drilling equipment firm, thus be difficult to appearance and loosen, improve its switching performance, it is ensured that its service life.
Claims (5)
- null1. an oil drilling inner core，It is characterized in that: it includes inner core body (1)，The left end of described inner core body (1) offers an axial endoporus (2)，The right-hand member of inner core body (1) is provided with an angular positioning step (3)，The bottom of endoporus (2) is provided with three wire holes (4) and a lumen orifice (5)，Described endoporus (2) connects with lumen orifice (5)，And run through whole inner core body (1)，Described lumen orifice (5) is provided with an arc convex (51)，The axle center of arc convex (51) and the axis coinciding of inner core body (1)，The axial line of one of them wire hole (4) is vertical with the plane at angular positioning step (3) place with the plane that the axial line of arc convex (51) forms，And two other wire hole (4) lays respectively at the both sides of this wire hole (4)，And it is identical with the phase contrast between this wire hole (4)，The left end of described wire hole (4) is provided with a reaming (6)，The left end of reaming (6) offers female thread，The left end of described inner core body (1) is additionally provided with first step (7)，External screw thread is offered on described first step (7)，The circumference of the left end of inner core body (1) is further opened with screw hole (8) and multiple waist-shaped hole (9) and first-class wire casing (10)，Arcuate groove (11) is offered at inner core body (1) right-hand member，Described arcuate groove (11) connects with streamline groove (10)，It is additionally provided with a square groove (12) in the left part of streamline groove (10).
- A kind of oil drilling inner core the most according to claim 1, it is characterised in that: the wire hole (4) of described both sides is 68.5 ° with the phase contrast of middle wire hole (4).
- A kind of oil drilling inner core the most according to claim 1, it is characterized in that: described endoporus (2) is divided into the first endoporus (21) and the second endoporus (22), and first endoporus (21) be positioned at the second endoporus (22) left side, and the diameter of the first endoporus (21) is more than the diameter of the second endoporus (22).
- A kind of oil drilling inner core the most according to claim 1, it is characterised in that: the bottom of described reaming (6) and the junction of wire hole (4) are provided with 45 ° of chamferings.
- A kind of oil drilling inner core the most according to claim 1, it is characterised in that: described waist-shaped hole (9) is four, and is evenly distributed on same circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620132379.6U CN205503029U (en) | 2016-02-22 | 2016-02-22 | Inner tube for oil drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620132379.6U CN205503029U (en) | 2016-02-22 | 2016-02-22 | Inner tube for oil drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205503029U true CN205503029U (en) | 2016-08-24 |
Family
ID=56725651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620132379.6U Withdrawn - After Issue CN205503029U (en) | 2016-02-22 | 2016-02-22 | Inner tube for oil drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205503029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545220A (en) * | 2016-02-22 | 2016-05-04 | 成都优拓优联科技有限公司 | Inner barrel for petroleum drilling |
-
2016
- 2016-02-22 CN CN201620132379.6U patent/CN205503029U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545220A (en) * | 2016-02-22 | 2016-05-04 | 成都优拓优联科技有限公司 | Inner barrel for petroleum drilling |
| CN105545220B (en) * | 2016-02-22 | 2017-07-04 | 成都优拓优联科技有限公司 | A kind of oil drilling inner cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20170704 |
|
| AV01 | Patent right actively abandoned |