CN201057041Y - Lengthened connection device - Google Patents
Lengthened connection device Download PDFInfo
- Publication number
- CN201057041Y CN201057041Y CNU2007200207356U CN200720020735U CN201057041Y CN 201057041 Y CN201057041 Y CN 201057041Y CN U2007200207356 U CNU2007200207356 U CN U2007200207356U CN 200720020735 U CN200720020735 U CN 200720020735U CN 201057041 Y CN201057041 Y CN 201057041Y
- Authority
- CN
- China
- Prior art keywords
- telescoping tube
- bearing sleeve
- lengthening
- pressure
- crossover sub
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a lengthening connection device, which comprises a pressing sleeve barrel, an inner telescopic tube, a middle connector, an upper and lower adapter and a sealing device. The sliding inner telescopic tube is arranged in the pressing sleeve barrel; a bulge is arranged at the upper part of the inner telescopic tube; the middle connector with the internal diameter more than the external diameter of the inner telescopic tube and less than the external diameter of the bulge is arranged at the upper part of the inner telescopic tube; each adapter is respectively arranged at the upper end of the pressing sleeve barrel and at the lower end of the inner telescopic tube; a helical line is used to connect two adapters; the two adapters are used to connect different instruments at the upper part and at the lower part; a pass of sealing device is arranged at one end of the two adapters connected with the pressing sleeve barrel and a connecting sleeve barrel, to ensure the sealing and insulating of the instruments to drilling fluid. The lengthening connection device can finish the connecting requirement of the instruments between the spanning drill collars of a petroleum drilling well underground surveying instrument.
Description
Technical field:
The utility model relates to a kind of oil drilling device for subsurface measuring and strides drill collar lengthening linkage.Be particularly related to a kind of can freely stretch stride drill collar lengthening linkage.
Background technology:
At present, petroleum industry, the measurement while-drilling instrument that use the drilling well down-hole is because of technical development, and particularly with the development of boring the geologic parameter instrument, the length of drilling well downhole instrument is more and more longer, and this just needs the more drill collar of striding of instrument to couple together use.Existing settling mode: a kind of drill collar that is to use special use, but its application cost is very high, and compliance is relatively poor, a whole set of instrument all can not use if special-purpose drill collar diminishes wound.Another kind just is to use strides the drill collar linkage, and the use that this sampling instrument can be relatively independent connects instrument by striding the drill collar linkage in the different length drill collar, and the compliance of instrument is better than using the instrument of special-purpose drill collar.But, because oil instrument application environment is in the drilling fluid of HTHP, so instrument is sealing fully, and lay the drill collar of instrument because different in size, the linkage of a lot of inner sealings fully is because complex structure, the sealing difficulty can't be accomplished telescopic variation in a big way, is difficult to be applicable to that striding drill collar in the drill collar of all kinds of different lengths connects instrument.And this type of linkage that seals fully damage, maintenance difficulty also will increase greatly, has restricted the effect of corresponding downhole instrument.
The utility model content:
In order to solve the problems of the technologies described above, the utility model provides a kind of oil downhole instrument that can adapt to stride the needs that drill collar connects between all kinds of different length drill collars, and guarantees the lengthening linkage of instrument sealing in drilling fluid of being connected.
The technical solution of the utility model is: the lengthening linkage is by comprising the pressure-bearing sleeve, interior telescoping tube, middle connector, crossover sub and sealing device formation up and down.Place in the pressure-bearing sleeve by the interior telescoping tube that slides; Projection is arranged at interior telescoping tube top; The pressure-bearing lower cartridge install additional an internal diameter greater than the external diameter of interior telescoping tube but less than the middle connector of the external diameter of interior telescoping tube upper ledge; Respectively there is a crossover sub pressure-bearing sleeve upper end and interior telescoping tube lower end; Use helix to connect two crossover subs; The top crossover sub is connected in the below of instrument in the drill collar of top, and the bottom crossover sub stretches out the top drill collar and is connected with the interior instrument of bottom drill collar; Two crossover subs respectively install a road sealing device additional with the end that the pressure-bearing sleeve links to each other with branch sleeve.Sealing device is made up of the high pressure plug and the wedge that embed.The high pressure plug embeds in the groove of crossover sub, and the two ends of helix are installed in respectively up and down on two high pressure plugs, push down the high pressure plug with wedge, with screw wedge are fixed on the crossover sub; Wedge remaining space inside perfusion silicone grease.Leave the mud outlet on interior telescoping tube top.Middle connector can overlap the centralizer of different size, by nut centralizer is fixed on the middle connector.
This structure of lengthening linkage, telescoping tube can be up and down in a big way and can not deviate from from the pressure-bearing sleeve in making, and whole lengthening linkage can have very big activity space, even drill collar length difference also can conveniently be used; End at two crossover subs installs a road sealing device respectively additional, has reduced the complexity of sealing device and the difficulty of making maintenance like this; The pressure-bearing sleeve inner can be invaded drilling fluid, and wherein helix adopts anti-high pressure of high temperature resistance and corrosion resistant industrial products, both can guarantee the reasonable time section use, damage can make things convenient for directly to be changed.Further improve as the utility model, cover one centralizer pins with nut on middle connector.The size of centralizer can be changed according to the drill collar internal diameter, goes for inner use of drill collar of different inner diameters.
Description of drawings
The extend schematic diagram of linkage of Fig. 1
The specific embodiment:
The utility model extends the linkage structure as shown in the figure: mainly by pressure-bearing sleeve 3, and interior telescoping tube 8, middle connector 9, crossover sub 1 and sealing device constitute up and down.Pressure-bearing sleeve 3 is the hollow column jacket of both-end helicitic texture, and length can be selected arbitrarily.Pressure-bearing sleeve 3 tops are connected with crossover sub 1.Connector 9 during pressure-bearing sleeve 3 bottoms connect.In connector 9 inner hollow, can overlap the centralizer 10 of different size, and in by nut 11 centralizer 10 being fixed on the connector 9.Interior telescoping tube 8 hollows, the external diameter of upper end projection, make it like this and can be free to slide in pressure-bearing sleeve 3, and telescoping tube 8 can not extracted out fully under the vertical state of drill collar less than the internal diameter of pressure-bearing sleeve 3 through holes greater than the internal diameter of middle connector 9 through holes.On interior telescoping tube 8 setting upright in circle 7 and the nut 11 setting upright circle 12 main rise centralizing functions prevent under the shock conditions of down-hole in telescoping tube 8 in pressure-bearing sleeve 3, shake the helix that weares and teares.Screw thread is arranged at interior telescoping tube 8 bottoms, can be connected with a hollow branch sleeve 13, makes it and can link to each other with the bottom crossover sub.Interior telescoping tube 8 length should be with in pressure-bearing sleeve 3 and the middle connector 9 that interior telescoping tube is withdrawn fully the time with top connector 1 between still have 10-20cm apart from being standard.Sufficient Tibetan space of lines can be arranged like this.
Making suitable jointing according to different appliance requires uses helix to be installed on the corresponding high pressure plug to get final product.And a little different application, so long as this have stretch and sealing device structure, all belong to scope of the present utility model.
Claims (5)
1. a lengthening linkage comprises pressure-bearing sleeve (3), interior telescoping tube (8), middle connector (9), crossover sub (1) up and down) and the sealing device formation, it is characterized in that: place in the pressure-bearing sleeve (3) by the interior telescoping tube (8) that slides; Projection is arranged at interior telescoping tube (8) top; Pressure-bearing sleeve (3) bottom install additional an internal diameter greater than the external diameter of interior telescoping tube (8) but less than the middle connector (9) of the external diameter of interior telescoping tube (8) upper ledge; Respectively there is a crossover sub (1) pressure-bearing sleeve (3) upper end and interior telescoping tube (8) lower end; Use helix to connect two crossover subs (1); Top crossover sub (1) is connected in the below of instrument in the drill collar of top, and bottom crossover sub (1) stretches out the top drill collar and is connected with the interior instrument of bottom drill collar; Two crossover subs respectively install a road sealing device with pressure-bearing sleeve (3) additional with the end that branch sleeve (13) links to each other.
2. lengthening linkage according to claim 1 is characterized in that: sealing device is made up of the high pressure plug (6) and the wedge (5) that embed.
3. lengthening linkage according to claim 2, it is characterized in that: high pressure plug (6) embeds in the groove of crossover sub (1), the two ends of helix are installed in respectively up and down on two high pressure plugs (6), push down high pressure plug (6) with wedge (5), wedge (5) is fixed on the crossover sub (1) with screw (4); Wedge (5) remaining space inside perfusion silicone grease.
4. lengthening linkage according to claim 1 and 2 is characterized in that: leave mud outlet (14) on interior telescoping tube (8) top.
5. lengthening linkage according to claim 1 and 2 is characterized in that: middle connector (9) can overlap the centralizer (10) of different size, by nut (11) centralizer (10) is fixed on the middle connector (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200207356U CN201057041Y (en) | 2007-04-16 | 2007-04-16 | Lengthened connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200207356U CN201057041Y (en) | 2007-04-16 | 2007-04-16 | Lengthened connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057041Y true CN201057041Y (en) | 2008-05-07 |
Family
ID=39425882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200207356U Expired - Fee Related CN201057041Y (en) | 2007-04-16 | 2007-04-16 | Lengthened connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057041Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789935A (en) * | 2016-04-22 | 2016-07-20 | 中国石油天然气集团公司 | Cable connection device for electric drill well drilling system |
| CN114941522A (en) * | 2022-07-01 | 2022-08-26 | 应急管理部国家自然灾害防治研究院 | Underground high-pressure sealing hinge type connector |
-
2007
- 2007-04-16 CN CNU2007200207356U patent/CN201057041Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789935A (en) * | 2016-04-22 | 2016-07-20 | 中国石油天然气集团公司 | Cable connection device for electric drill well drilling system |
| CN114941522A (en) * | 2022-07-01 | 2022-08-26 | 应急管理部国家自然灾害防治研究院 | Underground high-pressure sealing hinge type connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20100416 |