CN202544795U - Underground well opening back connecting device - Google Patents
Underground well opening back connecting device Download PDFInfo
- Publication number
- CN202544795U CN202544795U CN 201220061370 CN201220061370U CN202544795U CN 202544795 U CN202544795 U CN 202544795U CN 201220061370 CN201220061370 CN 201220061370 CN 201220061370 U CN201220061370 U CN 201220061370U CN 202544795 U CN202544795 U CN 202544795U
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- sleeve pipe
- tieback
- head
- sleeve
- pipe
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Abstract
The utility model discloses an underground well opening back connecting device. A water isolation catheter is connected with a water isolation catheter back connecting head through welding, a groove, a metal sealing ring and a locking block are sequentially arranged on the inner diameter of the water isolation catheter back connecting head from top to bottom, the water isolation catheter back connecting head is fixedly locked and connected with an underground well opening through a locking block, the inner side of the upper part of a back connecting head of a first sleeve is connected with the first sleeve through buttress sleeve screw threads, the outer side of the lower part of the back connecting head of the first sleeve is connected with a suspending device of a second sleeve in a sealed way, the inner side of the lower part of the back connecting head of the first sleeve is connected with the back connecting head of the second sleeve through trapezoidal screw threads, the inner side of the upper part of the back connecting head of the second sleeve is connected with the second sleeve through the buttress sleeve screw threads, the outer side of the lower part of the back connecting head of the second sleeve is connected with the suspending device of the second sleeve in a sealed way, the first sleeve refers to the 13 3/8'' sleeve, and the second sleeve refers to the 9 5/8'' sleeve. The underground well opening back connecting device has the advantages that the structure is compact, and the operation is convenient.
Description
Technical field
The utility model belongs to offshore oil equipment technology field, relates to a kind of underwater well head tieback assembly.
Background technology
In the shallow water petroleum exploration and development process of ocean, the underwater well head tieback is a special process.The operation of underwater well head tieback is meant through tieback string, tieback head and special tool, with each layer sleeve pipe of preboring well from the underwater well head tieback to offshore production platform, and install the process of platform wellhead assembly.
The operation of underwater well head tieback generally is tieback riser pipe, 13 3/8 〃 sleeve pipes and 9 5/8 〃 sleeve pipes.(in the following text, sleeve pipe one is meant the sleeve pipe of 13 3/8 〃 bores, and sleeve pipe two is meant the sleeve pipe of 9 5/8 〃 bores).
The tieback order generally is from the large scale to the small size, promptly first tieback riser pipe, and tie-back casing one then, last tie-back casing two.The underwater well head tieback assembly is through tieback string and tieback head insulating sea water, for underwater well head and offshore production platform are set up gas channel.But the docking structure between existing each unit of tieback assembly is unreasonable, causes operating process numerous and diverse, inefficiency.
Summary of the invention
The purpose of the utility model provides a kind of underwater well head tieback assembly, and it is unreasonable to have solved in the prior art docking structure between each unit of tieback assembly, and operating process is numerous and diverse, ineffective problem.
The technical scheme that the utility model adopted is; A kind of underwater well head tieback assembly; Comprise riser pipe and riser pipe tieback head, riser pipe is connected with riser pipe tieback head through welding, sets gradually fluted, metallic packing ring, latch segment on the internal diameter of riser pipe tieback head from top to bottom; Riser pipe tieback head locks and connects through latch segment and underwater well head, and through metallic packing ring seal between riser pipe tieback head and the underwater well head this moment;
Be used to be lowered to sleeve pipe one and sleeve pipe one tieback head in the underwater well head, sleeve pipe one tieback head upper inner is connected with sleeve pipe one through terraced partially casing threads button, outside the sleeve pipe one tieback head bottom through seal one and sleeve pipe two hangers be tightly connected;
Be used to be lowered to sleeve pipe two and sleeve pipe two tieback heads in sleeve pipe one and the sleeve pipe one tieback head; Sleeve pipe one tieback head lower inside is connected with sleeve pipe two tieback heads through trapezoidal thread; Sleeve pipe two tieback head upper inner are connected with sleeve pipe two through terraced partially casing threads button; The sleeve pipe two tieback head bottoms outsides is tightly connected with sleeve pipe two hangers through sealing two
Described sleeve pipe one is meant the sleeve pipe of 13 3/8 〃, and described sleeve pipe two is meant the sleeve pipe of 9 5/8 〃.
The beneficial effect of the utility model is; Be fixed on the underwater well head through retaining mechanism; Can realize the locking of underwater well head tieback assembly and underwater well head through special tool, for underwater well head and offshore production platform provide gas channel, this tieback assembly can shorten the time that offshore oil and gas field is gone into operation.The utility model compact conformation, easy to operate can adapt to the underwater operation requirement fully.
Description of drawings
Fig. 1 is the structural representation of the utility model device tieback riser pipe;
Fig. 2 is the structural representation of the utility model device tie-back casing one;
Fig. 3 is the structural representation of the utility model device tie-back casing two.
Among the figure, 1. riser pipe, 2. riser pipe tieback head, 3. groove, 4. metallic packing ring, 5. latch segment, 6. underwater well head, 7. sleeve pipe one, 8. sleeve pipe one tieback head, 9. sealing one, 10. sleeve pipe two hangers, 11. sleeve pipes, two, 12. sleeve pipes, two tieback heads, 13. sealings two.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is elaborated.
With reference to Fig. 1, Fig. 2, Fig. 3; The structure of the utility model device is; Comprise riser pipe 1 and riser pipe tieback head 2; Riser pipe 1 is connected with riser pipe tieback head 2 through welding, sets gradually fluted 3, metallic packing ring 4, latch segment 5 on the internal diameter of riser pipe tieback head 2 from top to bottom, and riser pipe tieback head 2 locks and connects through latch segment 5 and underwater well head 6 realizations; Underwater well head 6 upper end arranged outside have the locking groove that matches with latch segment 5, and through metallic packing ring 4 realize sealing between riser pipe tieback head 2 and the underwater well head 6 this moment;
With reference to Fig. 2, Fig. 3; Be used to be lowered to sleeve pipe 1 and sleeve pipe one tieback head 8 in the underwater well head 6; Sleeve pipe one tieback head 8 upper inner are connected with sleeve pipe 1 through terraced partially casing threads button, outside sleeve pipe one tieback head 8 bottoms through seal 1 and sleeve pipe two hangers 10 be tightly connected;
Be used to be lowered to sleeve pipe 2 11 and sleeve pipe two tieback heads 12 in sleeve pipe 1 and the sleeve pipe one tieback head 8; Sleeve pipe one tieback head 8 lower inside are connected with sleeve pipe two tieback heads 12 through trapezoidal thread; Sleeve pipe two tieback heads 12 upper inner are connected with sleeve pipe 2 11 through terraced partially casing threads button, outside sleeve pipe two tieback heads 12 bottoms through seal 2 13 and sleeve pipe two hangers 10 be tightly connected.
The operating principle of the utility model device is, before carrying out the tieback operation, at first will check each tieback head thread and sealing, and thoroughly clean, and coats butter.Secondly, check the locking situation of checking tieback head and the position of rotation of special tool to the function of each tieback head and special tool etc.The order of underwater well head tieback generally be from the large scale sleeve pipe to the small size sleeve pipe, promptly first tieback riser pipe 1, tie-back casing 1 again, last tie-back casing 2 11.
The concrete course of work of the utility model device is:
At first, as shown in Figure 1, after offshore production platform was in place, under the help of ROV, riser pipe tieback head 2 was sitting on the underwater well head 6 until riser pipe tieback head 2 along with riser pipe 1 is lowered to together.At this moment, the upper and lower inclined-plane in metallic packing ring 4 outsides respectively with the inboard fine applying in inclined-plane in riser pipe tieback head 2 and underwater well head 6 upper surfaces, make that metallic packing ring 4 and riser pipe tieback head 2 and underwater well head 6 upper surfaces are inboard to form sealing.Then; Be lowered to special tool from offshore production platform, insert in riser pipe tieback head 2 grooves 3, the retaining mechanism of riser pipe tieback head 2 is applied the right-hand thread moment of torsion; Drive latch segment 5 and get in the outside, the underwater well head 6 upper ends locking groove, make riser pipe tieback head 2 lock underwater well heads 6.At last, qualified through pressure test, then accomplish the tieback of riser pipe 1.
Secondly, as shown in Figure 2, when sleeve pipe one tieback head 8 transfer along with sleeve pipe 1 put in place after, the saw-tooth thread pin thread and the sleeve pipe two hangers 10 upper inner saw-tooth thread boxes in the outside, sleeve pipe one tieback head 8 bottoms are meshed.Then, utilize the tong instrument revoling tube one of sleeve pipe one, make sleeve pipe one tieback head 8 move down, be sitting on sleeve pipe two hangers 10 steps until sleeve pipe one tieback head 8 lower ends.At this moment, the inboard fine applying in sleeve pipe one tieback head, 8 lower outside and sleeve pipe two hangers 10 upper ends makes sealing 1 and inboard, sleeve pipe two hangers 10 upper ends form sealing.At last, qualified through pressure test, then accomplish the tieback of sleeve pipe 1.
At last, as shown in Figure 3, when sleeve pipe two tieback heads 12 transfer along with sleeve pipe 2 11 put in place after, the trapezoidal thread pin thread and the sleeve pipe one tieback head 8 lower inside trapezoidal thread boxes in the sleeve pipe two tieback heads 12 bottoms outsides are meshed.Then, utilize the tong instrument revoling tube 2 11 of sleeve pipe two, make sleeve pipe two tieback heads 12 move down, be sitting on the sleeve pipe one tieback head 8 upper inner steps until sleeve pipe two tieback heads 12 upper outside steps.At this moment, sleeve pipe two tieback heads, 12 lower outside faces and the fine applying of sleeve pipe two hangers, 10 lower end medial surfaces make sealing 2 13 and sleeve pipe two hangers 10 lower end medial surfaces form sealing.At last, qualified through pressure test, then accomplish the tieback of sleeve pipe 2 11.
When riser pipe 1, sleeve pipe 1 and sleeve pipe 2 11 all from underwater well head 6 tiebacks behind offshore production platform, by designing requirement cutting tieback each casing string to platform, and the casing head of mounting platform well head and production tree, then the underwater well head tieback is finally accomplished.
Claims (2)
1. underwater well head tieback assembly; Its characteristics are: comprise riser pipe (1) and riser pipe tieback head (2); Riser pipe (1) is connected with riser pipe tieback head (2) through welding; Set gradually fluted (3), metallic packing ring (4), latch segment (5) on the internal diameter of riser pipe tieback head (2) from top to bottom; Riser pipe tieback head (2) locks and connects through latch segment (5) and underwater well head (6), and through metallic packing ring (4) seal between riser pipe tieback head (2) and the underwater well head (6) this moment;
Be used to be lowered to sleeve pipe one (7) and sleeve pipe one tieback head (8) in the underwater well head (6); Sleeve pipe one tieback head (8) upper inner is connected with sleeve pipe one (7) through terraced partially casing threads button, and the outside, sleeve pipe one tieback head (8) bottom is tightly connected through sealing one (9) and sleeve pipe two hangers (10);
Be used to be lowered to sleeve pipe two (11) and sleeve pipe two tieback heads (12) in sleeve pipe one (7) and the sleeve pipe one tieback head (8); Sleeve pipe one tieback head (8) lower inside is connected with sleeve pipe two tieback heads (12) through trapezoidal thread; Sleeve pipe two tieback head (12) upper inner are connected with sleeve pipe two (11) through terraced partially casing threads button; The outside, sleeve pipe two tieback head (12) bottoms is tightly connected through sealing two (13) and sleeve pipe two hangers (10)
Described sleeve pipe one is meant the sleeve pipe of 13 3/8 〃 bores, and described sleeve pipe two is meant the sleeve pipe of 9 5/8 〃 bores.
2. underwater well head tieback assembly according to claim 1 is characterized in that: described underwater well head (6) upper end arranged outside has the locking groove that matches with latch segment (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220061370 CN202544795U (en) | 2012-02-24 | 2012-02-24 | Underground well opening back connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220061370 CN202544795U (en) | 2012-02-24 | 2012-02-24 | Underground well opening back connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202544795U true CN202544795U (en) | 2012-11-21 |
Family
ID=47165447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220061370 Expired - Fee Related CN202544795U (en) | 2012-02-24 | 2012-02-24 | Underground well opening back connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202544795U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298442A (en) * | 2015-11-02 | 2016-02-03 | 江苏科技大学 | Mobile and rotary type linear coverage tool |
| CN105298444A (en) * | 2015-11-02 | 2016-02-03 | 江苏科技大学 | Rotary type linear covering tool |
| CN105386741A (en) * | 2015-11-02 | 2016-03-09 | 江苏科技大学 | Rotary and movable linear covering tool |
| CN109944565A (en) * | 2019-04-02 | 2019-06-28 | 宝鸡石油机械有限责任公司 | A kind of ocean dry type wellhead assembly |
| CN113073946A (en) * | 2020-05-13 | 2021-07-06 | 中国海洋石油集团有限公司 | Riser pipe device with protective pipe and using method |
| CN114876398A (en) * | 2022-05-31 | 2022-08-09 | 中海石油(中国)有限公司 | Underwater wellhead assembly for shallow water |
-
2012
- 2012-02-24 CN CN 201220061370 patent/CN202544795U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298442A (en) * | 2015-11-02 | 2016-02-03 | 江苏科技大学 | Mobile and rotary type linear coverage tool |
| CN105298444A (en) * | 2015-11-02 | 2016-02-03 | 江苏科技大学 | Rotary type linear covering tool |
| CN105386741A (en) * | 2015-11-02 | 2016-03-09 | 江苏科技大学 | Rotary and movable linear covering tool |
| CN105298444B (en) * | 2015-11-02 | 2017-10-03 | 江苏科技大学 | A kind of rotary linear covering instrument |
| CN105298442B (en) * | 2015-11-02 | 2017-10-03 | 江苏科技大学 | A kind of movable and rotary type linearly covers instrument |
| CN105386741B (en) * | 2015-11-02 | 2017-10-31 | 江苏科技大学 | A kind of rotary moving linearly covers instrument |
| CN109944565A (en) * | 2019-04-02 | 2019-06-28 | 宝鸡石油机械有限责任公司 | A kind of ocean dry type wellhead assembly |
| CN113073946A (en) * | 2020-05-13 | 2021-07-06 | 中国海洋石油集团有限公司 | Riser pipe device with protective pipe and using method |
| CN113073946B (en) * | 2020-05-13 | 2022-12-06 | 中国海洋石油集团有限公司 | Using method of riser device with protective pipe |
| CN114876398A (en) * | 2022-05-31 | 2022-08-09 | 中海石油(中国)有限公司 | Underwater wellhead assembly for shallow water |
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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 |
Granted publication date: 20121121 Termination date: 20210224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |