CN204899823U - Sealing core drilling safety joint with adjustable - Google Patents
Sealing core drilling safety joint with adjustable Download PDFInfo
- Publication number
- CN204899823U CN204899823U CN201520586213.7U CN201520586213U CN204899823U CN 204899823 U CN204899823 U CN 204899823U CN 201520586213 U CN201520586213 U CN 201520586213U CN 204899823 U CN204899823 U CN 204899823U
- Authority
- CN
- China
- Prior art keywords
- joint
- wall
- male joint
- safe
- end cap
- 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
Links
Abstract
The utility model relates to an oil and the natural gas well drilling technical field that cores, in particular to sealing core drilling safety joint with adjustable. The device's safe male joint lower extreme wall connection safety female joint, locking ring install in the inner wall keyway of safety male joint upper portion and the card in the safety male joint on the step face, the locking ring suit is in the sealed end cap upper end outside, sealed end cap sub -unit connection single current valve, the sealed end cap lower extreme outside is connected and is transferred long joint, transfers long joint outer wall and safe male joint lower extreme inner wall threaded connection. The utility model discloses a long screw thread between safe public affairs, the female joint of need dismantling is transferred to the inner tube, transfer long simple and convenient, save time, simple structure adopts the pressure that airtight liquid caused in the balanced inner tube of the general single current valve of gas -liquid, prevents the seal failure that the piston end cap caused at the back and forth movement in -process, the dependable performance.
Description
Technical field:
The utility model relates to oil and gas drilling and coring delivery technical field, the particularly adjustable sealing core drilling safety joint of one.
Background technology:
Sealing core drilling is the coring tool that special gel sealing fluid is housed at inner core, with the method stoping mud to infect the core-drilling that rock core carries out.Miss for preventing sealing fluid and need to regulate the length of inner/outer tube conveniently on piston plug, to load shear pin.Hermetic core taking tool general is at present when inner/outer tube length is inconsistent, all must dismantle coring tool joint, to regulate length, waste a large amount of drilling times, top adopts piston type plug for balancing inner core pressure simultaneously, and when long cylinder sealing core drilling or high temperature well are cored, piston seal performance very easily lost efficacy, cause sealing unsuccessfully, affect effect of coring.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of adjustable sealing core drilling safety joint, the arrangement achieves inner core adjusts length not need to dismantle the screw thread between safe male and female joint, adjust long easy, save time, structure is simple, adopt the pressure that in gas-liquid general ball-and-seat balance inner core, sealing fluid causes, prevent piston type plug from moving back and forth the seal failure caused in process, dependable performance.Overcoming existing hermetic core taking tool inner/outer tube adjusts length to need to go up shackle back and forth, waste plenty of time, the deficiency of the easy seal failure of piston type plug.
Technical solution adopted in the utility model is: a kind of adjustable sealing core drilling safety joint, comprises safe male joint and security master joint; Safe male joint lower end outer wall connects security master joint, retaining ring to be arranged in safe male joint upper inside wall keyway and to be stuck in safe male joint on step surface, retaining ring is sleeved on outside seal plug upper end, seal plug bottom connects ball-and-seat, seal plug lower end outside connects adjusts lengthening joint, adjusts lengthening joint outer wall to be threaded with safe male joint lower end inner wall.
The beneficial effects of the utility model are: the utility model inner core adjusts length not need to dismantle the screw thread between safe male and female joint, adjust long easy, save time, structure is simple, adopt the pressure that in gas-liquid general ball-and-seat balance inner core, sealing fluid causes, prevent piston type plug from moving back and forth the seal failure caused in process, dependable performance.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
As shown in Figure 1, a kind of adjustable sealing core drilling safety joint, comprises safe male joint 1 and security master joint 2; Safe male joint 1 lower end outer wall connects security master joint 2, retaining ring 3 to be arranged in safe male joint 1 upper inside wall keyway and to be stuck in safe male joint 1 on step surface, retaining ring 3 is sleeved on outside seal plug 4 upper end, seal plug 4 bottom connects ball-and-seat 5, seal plug 4 lower end outside connects adjusts lengthening joint 6, adjusts lengthening joint 6 outer wall to be threaded with safe male joint 1 lower end inner wall.
During use, lengthening joint 6 is adjusted directly to be connected with inner core, security master joint 2 is connected with urceolus, when the gap of inner core and urceolus does not meet design requirement, by rotary seal plug 4, drive and adjust lengthening joint 6 relative to the screw-in of safe male joint 1 and back-out, thus play the effect regulating interval of internal and external tube.Hermetic core taking tool inner core needs to load sealing fluid, after tool length regulates, seal plug 4 can be dismantled, sealing fluid is poured into coring inner drum by adjusting lengthening joint 6, when after the airtight hydroful of inner core, again the screw thread between seal plug 4 and tune lengthening joint 6 is tightened, and retaining ring 3 is installed, thus stop seal plug 4 and adjust lengthening joint 6 to thread off.Inner core sealing fluid, because bottom hole temperature (BHT) pressure dependence can produce pressure change, can carry out pressure release, and drilling fluid can not flow in inner core when hypertonia by ball-and-seat 5, thus improves sealing core drilling effect.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. an adjustable sealing core drilling safety joint, comprises safe male joint (1) and security master joint (2); It is characterized in that: safe male joint (1) lower end outer wall connects security master joint (2), retaining ring (3) to be arranged in safe male joint (1) upper inside wall keyway and to be stuck on safe male joint (1) interior step surface, retaining ring (3) is sleeved on outside seal plug (4) upper end, seal plug (4) bottom connects ball-and-seat (5), seal plug (4) lower end outside connects adjusts lengthening joint (6), adjusts lengthening joint (6) outer wall to be threaded with safe male joint (1) lower end inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520586213.7U CN204899823U (en) | 2015-08-06 | 2015-08-06 | Sealing core drilling safety joint with adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520586213.7U CN204899823U (en) | 2015-08-06 | 2015-08-06 | Sealing core drilling safety joint with adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204899823U true CN204899823U (en) | 2015-12-23 |
Family
ID=54922009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520586213.7U Expired - Fee Related CN204899823U (en) | 2015-08-06 | 2015-08-06 | Sealing core drilling safety joint with adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204899823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562226A (en) * | 2022-02-28 | 2022-05-31 | 中国铁建重工集团股份有限公司 | Coring inner tube |
| CN117905395A (en) * | 2024-03-19 | 2024-04-19 | 中石化西南石油工程有限公司 | Multistage adjustable compensation expansion joint for test and use method thereof |
-
2015
- 2015-08-06 CN CN201520586213.7U patent/CN204899823U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562226A (en) * | 2022-02-28 | 2022-05-31 | 中国铁建重工集团股份有限公司 | Coring inner tube |
| CN114562226B (en) * | 2022-02-28 | 2024-03-12 | 中国铁建重工集团股份有限公司 | Coring inner tube |
| CN117905395A (en) * | 2024-03-19 | 2024-04-19 | 中石化西南石油工程有限公司 | Multistage adjustable compensation expansion joint for test and use method thereof |
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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: 20151223 Termination date: 20180806 |