CN203239323U - Lower seat key short section - Google Patents
Lower seat key short section Download PDFInfo
- Publication number
- CN203239323U CN203239323U CN 201320265398 CN201320265398U CN203239323U CN 203239323 U CN203239323 U CN 203239323U CN 201320265398 CN201320265398 CN 201320265398 CN 201320265398 U CN201320265398 U CN 201320265398U CN 203239323 U CN203239323 U CN 203239323U
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- CN
- China
- Prior art keywords
- seat
- key
- seat key
- head
- pipe nipple
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- Expired - Fee Related
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Abstract
The utility model provides a lower seat key short section. The lower seat key short section comprises a seat key joint, a seat key sleeve assembly and guiding shoe assembly, wherein the seat key joint is cylindrical; the seat key sleeve assembly is cylindrical and arranged in the seat key joint; the guiding shoe assembly is arranged in the seat key joint in a penetrating mode, and a guiding piece is arranged on the end portion of the guiding shoe assembly. The seat key sleeve assembly is arranged between the seat key joint and the guiding shoe assembly. An elastic clamping hoop is arranged on the seat key sleeve assembly, and a clamping groove matched with a clamping-connection part of the elastic clamping hoop is formed in the guiding piece. Through the arrangement of the elastic clamping hoop, the guiding piece can only penetrate through the elastic clamping hoop, so that the guiding shoe assembly will not generate axial displacement on a large well deflection or level section of directional well construction, the technical problem that key disengaging happens to an instrument is prevented, the working reliability and the working safety of the instrument are improved, normal work of the measuring instrument used during drilling under complex well conditions is ensured, the drill trip frequency of normal well drilling is reduced, the well drilling period is shortened, and the well drilling cost is lowered.
Description
Technical field
The utility model relates to the probing field, especially, relates to a kind of lower key pipe nipple.
Background technology
Along with the development of natural petroleum gas field field to directional well, high angle hole and horizontal well technology, the application of measurement while-drilling instrument is also more and more extensive.The drilling period of all types of development wells has been shortened in the application of wireless drilling largely, has improved to greatest extent the ability of each major oil and gas field excavation Remaining Oil And Gas resource.That uses on the market now is of a great variety with boring instrument, but distinguishes from form of structure, mainly contains suspension and two kinds of form of structure of a lower key, upper suspended structure form location is reliable, but when running into well slough or bit freezing etc., instrument can not be salvaged, and will bring very large economy loss to the user; Lower seat bond structure form has the salvaging function, but at large hole deviation or the horizontal segment of directional well construction, the instrument body may produce axial displacement, causes instrument the key phenomenon to occur taking off, causes underground equipment to work, and the constructor must pull out of hole.Calculate by present drilling cost, every increase one trip will cause several ten thousand yuan economic loss to drilling company; On the contrary, if can reduce the invalid number of times that makes a trip of drilling well, can greatly reduce drilling period, save drilling cost.
The utility model content
The utility model purpose is to provide a kind of lower key pipe nipple, and to solve a lower key at large hole deviation or the horizontal segment of directional well construction, the instrument body may produce axial displacement, causes instrument the technical problem of key phenomenon to occur taking off.
For achieving the above object, the utility model provides a kind of lower key pipe nipple, comprises a keyed jointing head, and seat keyed jointing head is tubular; Seat key grip assembly, seat key grip assembly is tubular, seat key grip assembly arranges the inside of present keyed jointing head; The guide shoe assembly wears in the present keyed jointing head, and the end of guide shoe assembly is provided with guide; Seat key grip assembly arranges between present keyed jointing head and the guide shoe assembly; Be provided with flexible collar on the seat key grip assembly, be provided with the draw-in groove that cooperates with the Access Division of flexible collar on the guide.
Further, seat key grip assembly comprises interconnective seat key cover and the top connection of seat key.
Further, the seat key puts and is provided with locating hole, is provided with positioning key on the locating hole.
Further, the seat key puts and is provided with the first sealing ring.
Further, the guide shoe assembly comprises the guide shoe cylinder, and the two ends of guide shoe cylinder are respectively arranged with guide shoe top connection and drainage bar.
Further, be provided with locating slot on the guide shoe cylinder, positioning key is fastened in the locating slot.
Further, be provided with the second sealing ring in the guide shoe top connection.
Further, be provided with conduction hole on the drainage bar.
Further, be provided with the drainage screw on the seat keyed jointing head, the drainage screw is connected with conduction hole.
Further, be provided with holding screw on the seat keyed jointing head.
Further, be provided with guide head on the guide, the angle of the axis of the joint face of guide head and draw-in groove and guide shoe assembly is greater than 45 degree.
Further, be provided with guide head on the guide, be provided with conical head on the guide head direction opposite with draw-in groove, the angle of the axis of the conical surface of conical head and guide shoe assembly is less than 45 degree.
The utlity model has following beneficial effect:
By flexible collar is set, guide can only unidirectionally pass flexible collar, make the guide shoe assembly at large hole deviation or the horizontal segment of directional well construction, can not axial displacement, prevented that the technical problem of key phenomenon from appearring taking off in instrument, increase reliability and the safety of instrument work, guarantee that measurement while-drilling instrument works under complex hole condition, reduce the number of times that makes a trip of normal drilling well, shorten drilling period, reduce drilling cost.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is according to lower key pipe nipple schematic diagram of the present utility model;
Fig. 2 is the seat key grip assembly schematic diagram according to lower key pipe nipple of the present utility model;
Fig. 3 is that the A-A of Fig. 2 is to cross-sectional schematic;
Fig. 4 is the guide shoe assembly schematic diagram according to lower key pipe nipple of the present utility model;
Fig. 5 is that the B-B of Fig. 4 is to cross-sectional schematic;
Fig. 6 is that the master according to flexible collar of the present utility model looks schematic diagram; And
Fig. 7 looks schematic diagram according to the right side of flexible collar of the present utility model.
Reference numeral in the accompanying drawing is as follows: 10, seat keyed jointing head; 20, seat key grip assembly; 21, seat key cover; 22, positioning key; 23, seat key top connection; 24, flexible collar; 25, the first sealing ring; 30, guide shoe assembly; 31, guide shoe top connection; 32, guide shoe cylinder; 33, drainage bar; 34, guide; 35, locating slot; 36, the second sealing ring; 37, conduction hole; 40, drainage screw; 50, holding screw.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1 to Fig. 7, according to lower key pipe nipple of the present utility model, comprising: seat keyed jointing head 10, seat keyed jointing head 10 is tubular; Seat key grip assembly 20, seat key grip assembly 20 is tubular, seat key grip assembly 20 arranges the inside of present keyed jointing head 10; Guide shoe assembly 30, wear present keyed jointing head 10 in, the end of guide shoe assembly 30 is provided with guide 34; Seat key grip assembly 20 arranges between present keyed jointing head 10 and the guide shoe assembly 30; Be provided with flexible collar 24 on the seat key grip assembly 20, be provided with the draw-in groove that cooperates with the Access Division of flexible collar 24 on the guide 34.The seat bond structure form of key-separation solves the technical problem that a present lower bond structure occurs in construction, improve the reliability of instrument.
Mainly by guide 34 and flexible collar 24 common realizations, wherein, flexible collar is the fluting cylinder to the anti-drop function of guide 34, and front end is comprised of a plurality of elastic card claws.When guide 34 is gone into the well, guide shoe assembly 30 enters in the key cover 21, the claw spreading of flexible collar, make it produce elastic deformation, when guide shoe top connection 31 sits on the conical surface of a key top connection 23, the undergauge place that flexible collar 24 just in time is stuck in guide 34 is on the draw-in groove, and this moment, 34 key functions of guide were finished in flexible collar 24 reinstatements.
Referring to Fig. 2 and Fig. 3, Fig. 6 and Fig. 7, seat key grip assembly 20 comprise interconnective seat key cover 21 and seat key top connection 23.Be provided with locating hole on the seat key cover 21, be provided with positioning key 22 on the locating hole.Be provided with the first sealing ring 25 on the seat key cover 21.
Referring to Fig. 4 and Fig. 5, guide shoe assembly 30 comprises guide shoe cylinder 32, and the two ends of guide shoe cylinder 32 are respectively arranged with guide shoe top connection 31 and drainage bar 33.Be provided with locating slot 35 on the guide shoe cylinder 32, positioning key 22 is fastened in the locating slot 35, realizes circumferentially location.Be provided with the second sealing ring 36 in the guide shoe top connection 31, seat key cover 21 is realized sealing with seat keyed jointing head 10 by the second sealing ring 36.
Referring to Fig. 1, be provided with conduction hole 37 on the drainage bar 33.Be provided with drainage screw 40 on the seat keyed jointing head 10, drainage screw 40 is connected with conduction hole 37.
Referring to Fig. 1, be provided with holding screw 50 on the seat keyed jointing head 10, realize circumferentially location, holding screw 50 also can adopt a plurality of to reach better circumferentially fixed effect.
Referring to Fig. 4, be provided with guide head on the guide 34, the angle of the axis of the joint face of guide head and draw-in groove and guide shoe assembly 30 is greater than 45 degree, and for example 60 spend.Be the angle of guide 34 when pulling out flexible collar; Be provided with conical head on the guide head direction opposite with draw-in groove, the angle of the axis of the conical surface of conical head and guide shoe assembly 30 is less than 45 degree, 30 degree for example, the angle when namely guide 34 enters flexible collar.Through the analytical calculation to guide 34 and flexible collar, adjust guide front end turnover position angle (such as entering flexible collar angle 30 degree, 60 degree when pulling out flexible collar) and the coupling mechanism force of flexible collar, select material corrosion-resistant, wear-resistant and that mechanical property is good, realized the anti-drop function of guide 34 " advance well bad go out ", namely when guide 34 is sat key, power guide 34 with very little power just can pass through flexible collar, needs larger power could break away from flexible collar when needs are salvaged.
Mounting method according to lower key pipe nipple of the present utility model:
1) the first sealing ring 25 is packed into each sealed groove is smeared an amount of silicone grease, smears an amount of screw thread glue and a seat key cover screwing at flexible collar screw thread place; A key of again positioning key 22 being packed into overlaps 21, then with instrument seat key cover 21 is packed in the key top connection 23, the direction of positioning key 22 is alignd with seat keyed jointing head 10 labeled slots, then with soket head cap screw fastening base key cover 21, prevent that the key cover 21 from rotating, the drainage screw 40 of packing at last is also fastening, realizes circumferentially location, and screw also can adopt a plurality of to reach better circumferentially fixed effect.
2) guide shoe assembly 30 mainly is comprised of guide shoe top connection 31, guide shoe cylinder 32, drainage bar 33, guide 34 and the second sealing ring 36 etc.Guide shoe assembly 30 left ends be threaded connection test and go into the well after good with boring instrument, the helicoid guide instrument of guide shoe cylinder 32 is along positioning key 22 rotations of 21 li in seat key cover until positioning key 22 enters locating slot 35 fully under the effect of instrument gravity and axial force, guide shoe top connection this moment 31 just in time sits on the conical surface of key top connection 23 the insides, instrument deadweight and mud impact force are born by seat key cover 21 fully, and other External Force Actings are not born in 22 effects that guide shoe and location are provided of positioning key; Guide 34 enters in the flexible collar 24 simultaneously, and the undergauge place that just in time is stuck in guide 34 is on the draw-in groove.
3) annular space drainage function: when instrument was gone into the well normal operation, the outer mud of drill collar entered in the drainage bar 33 by the conduction hole 37 on drainage screw 40 and the seat key cover 21, then pressure is passed to and records down-hole pressure on the pressure sensor; Seat key cover 21 and drainage bar 33 prevent that by the sealing ring sealing at conduction hole two ends inside and outside mud from connecting.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
The application finished integrate can salvage, the circumferentially seat key pipe nipple design of location, the drainage of annular space medium and anti-drop function.Possess under the prerequisite that to salvage characteristics satisfying instrument, realized the circumferential location of instrument body by helicoid and positioning spline, and finished the drainage function that the annular space pressure medium is measured, the pressure transmission that guarantees the outer mud of drill collar is measured, for drilling well provides true and reliable annular pressure data, solved in the drilling engineering with boring the common key problem of taking off of lower bond structure form of instrument.This key pipe nipple is simple in structure, and function is many, and is safe and reliable, effectively reduces the invalid number of times that makes a trip of situ of drilling well, shortens drilling period, saves drilling cost.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (12)
1. lower key pipe nipple is characterized in that, comprising:
Seat keyed jointing head (10), described seat keyed jointing head (10) is tubular;
Seat key grip assembly (20), described seat key grip assembly (20) is tubular, described seat key grip assembly (20) is arranged on the inside of described seat keyed jointing head (10);
Guide shoe assembly (30) is located in the described seat keyed jointing head (10), and the end of described guide shoe assembly (30) is provided with guide (34);
Described seat key grip assembly (20) is arranged between described seat keyed jointing head (10) and the described guide shoe assembly (30);
Be provided with flexible collar (24) on the described seat key grip assembly (20), be provided with the draw-in groove that cooperates with the Access Division of described flexible collar (24) on the described guide (34).
2. lower key pipe nipple according to claim 1 is characterized in that, described seat key grip assembly (20) comprises interconnective seat key cover (21) and seat key top connection (23).
3. lower key pipe nipple according to claim 2 is characterized in that, is provided with locating hole on the described seat key cover (21), is provided with positioning key (22) on the described locating hole.
4. lower key pipe nipple according to claim 2 is characterized in that, is provided with the first sealing ring (25) on the described seat key cover (21).
5. lower key pipe nipple according to claim 3 is characterized in that described guide shoe assembly (30) comprises guide shoe cylinder (32), and the two ends of described guide shoe cylinder (32) are respectively arranged with guide shoe top connection (31) and drainage bar (33).
6. lower key pipe nipple according to claim 5 is characterized in that, be provided with locating slot (35) on the described guide shoe cylinder (32), described positioning key (22) is fastened in the described locating slot (35).
7. lower key pipe nipple according to claim 5 is characterized in that, is provided with the second sealing ring (36) in the described guide shoe top connection (31).
8. lower key pipe nipple according to claim 5 is characterized in that, is provided with conduction hole (37) on the described drainage bar (33).
9. lower key pipe nipple according to claim 8 is characterized in that, is provided with drainage screw (40) on the described seat keyed jointing head (10), and described drainage screw (40) is connected with described conduction hole (37).
10. lower key pipe nipple according to claim 1 is characterized in that, is provided with holding screw (50) on the described seat keyed jointing head (10).
11. lower key pipe nipple according to claim 1 is characterized in that described guide is provided with guide head on (34), the angle of the axis of the joint face of described guide head and described draw-in groove and described guide shoe assembly (30) is greater than 45 degree.
12. lower key pipe nipple according to claim 1, it is characterized in that, described guide is provided with guide head on (34), is provided with conical head on the described guide head direction opposite with described draw-in groove, and the angle of the axis of the conical surface of described conical head and described guide shoe assembly (30) is less than 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320265398 CN203239323U (en) | 2013-05-15 | 2013-05-15 | Lower seat key short section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320265398 CN203239323U (en) | 2013-05-15 | 2013-05-15 | Lower seat key short section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239323U true CN203239323U (en) | 2013-10-16 |
Family
ID=49316633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320265398 Expired - Fee Related CN203239323U (en) | 2013-05-15 | 2013-05-15 | Lower seat key short section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973078A (en) * | 2019-03-26 | 2019-07-05 | 西华大学 | A kind of auxiliary MWD efficiently enters well tool |
-
2013
- 2013-05-15 CN CN 201320265398 patent/CN203239323U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973078A (en) * | 2019-03-26 | 2019-07-05 | 西华大学 | A kind of auxiliary MWD efficiently enters well tool |
| CN109973078B (en) * | 2019-03-26 | 2022-11-01 | 香港中文大学(深圳)城市地下空间及能源研究院 | Auxiliary MWD high-efficiency well entering tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20210515 |