CN210422527U - Tool for lowering underwater wellhead head - Google Patents
Tool for lowering underwater wellhead head Download PDFInfo
- Publication number
- CN210422527U CN210422527U CN201921105525.6U CN201921105525U CN210422527U CN 210422527 U CN210422527 U CN 210422527U CN 201921105525 U CN201921105525 U CN 201921105525U CN 210422527 U CN210422527 U CN 210422527U
- Authority
- CN
- China
- Prior art keywords
- locking piece
- ring
- driving body
- locking
- main body
- 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
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model belongs to the technical field of offshore oil drilling equipment, and relates to an underwater wellhead head lowering tool, which comprises a main body unit, a locking block, a spring, a baffle ring, a driving body, an end cover and a mandrel; the locking piece is placed in the main body unit hole groove, the middle part of the locking piece is provided with a circular ring for limiting the axial movement of the locking piece, and the circular ring is provided with a convex block which is matched with the anti-rotation groove in the main body unit hole groove for limiting the rotation of the locking piece. The spring sleeve is on the locking piece, and ring contact on one end and the locking piece, the other end and fender ring contact keep off the ring and pass through bolted connection and install on keeping off the ring seat, prevent that locking piece and spring from shifting out. The mandrel is connected with the driving body through threads, and the bottom of the mandrel is provided with a supporting seat which limits the main body unit to move downwards during working. The driving body is arranged on the driving body seat, and the bottom end of the driving body seat is provided with a 45-degree inclined surface which is in matched contact with the inclined surface of the locking block. The utility model discloses simple structure, loading and unloading are swift, and convenient operation can realize the oral transferring of underwater well fast and retrieve, improves work efficiency.
Description
Technical Field
The utility model belongs to the technical field of the marine oil drilling equipment, a tool is transferred to underwater wellhead particularly.
Background
The underwater wellhead lowering tool is an important component of an underwater wellhead system, and whether the lowering and recovery operations can be completed successfully and rapidly directly relates to the reliability of the whole underwater wellhead system. The failure of the lowering and recovering process not only can lead to the remarkable increase of the operation time and the operation cost, but also can lead to the scrapping of an underwater oil well, and even the severe condition that oil gas leaks to pollute the marine environment occurs.
With the increasing importance of China on ocean resources, the development scale of ocean oil and gas is gradually enlarged, the performance requirement on ocean oil and gas drilling and production equipment is higher and higher, how to simplify the structure of the underwater wellhead lowering tool, quickly install the tool, improve the reliability of the lowering tool and quickly and efficiently realize the lowering and recovery of the underwater wellhead is the key point for the research and improvement of the whole lowering tool.
Disclosure of Invention
The utility model aims at: the utility model provides a oral instrument of transferring of underwater well, simple structure, loading and unloading are swift, and convenient operation can realize the oral installation of transferring of underwater well fast and lift the recovery, improves work efficiency. The technical scheme is as follows:
a tool for lowering a wellhead in water comprises a main body unit, a locking block, a spring, a baffle ring, a driving body, an end cover and a mandrel, wherein eight hole grooves with 45-degree intervals are formed in the outer wall of the main body unit, a driving body seat is arranged at the upper end of the main body unit, the locking block is placed in the hole grooves of the main body unit, and the spring sleeves the locking block and is placed in the hole grooves; the baffle ring is connected and installed on the baffle ring seat through a bolt to prevent the locking block and the spring from moving out of the hole groove; the driving body is placed on the driving body seat, the end cover is installed at the upper end of the main body unit through bolt connection, and the middle part of the mandrel is provided with external threads connected with the internal threads of the driving body.
The main body unit hole groove is provided with a locking block mounting seat, a baffle ring mounting seat and an anti-rotation groove for limiting the rotation of the locking block.
One end of the locking block is a 45-degree inclined surface and is in contact with the inclined surface of the driving body; the other end is provided with an engaging tooth which is engaged with the tooth groove of the wellhead head to realize the locking of the wellhead head; the middle part is provided with a circular ring for limiting the axial movement of the locking block, the circular ring is contacted with the bottom surface of the locking block mounting seat, and the circular ring is provided with a lug for limiting the rotation of the locking block and matched with an anti-rotation groove in a hole groove of the main body unit. This arrangement ensures that the lock block moves axially within the effective range and does not rotate.
The spring is sleeved on the locking block, one end of the spring is in contact with the circular ring on the locking block, and the other end of the spring is in contact with the retaining ring. According to the setting, when the wellhead is locked under the action of the driving body, the spring is compressed and stored with energy under the action of the axial pressure of the retaining ring and the locking block circular ring, and after the wellhead is released, the locking block moves inwards under the action of the pushing force of the spring to assist the locking block to be meshed with the tooth grooves.
The driving body is a stepped shaft and is arranged in the driving body seat, the inner hole of the driving body is provided with threads, and the lower end of the driving body is provided with a 45-degree inclined surface which is in matched contact with the inclined surface at the end part of the locking block. The arrangement can ensure that the driving body can move downwards when the mandrel drives the driving body to rotate, and the main body unit cannot move downwards due to the blocking of the supporting seat, so that the inclined surface of the driving body is ensured to be in contact with the inclined surface of the locking block.
The spindle is connected with the driving body through threads, and a supporting seat is arranged at the bottom of the spindle. This arrangement prevents the main body unit from moving down to cause the driving body to move down improperly during operation.
The beneficial effects of the utility model reside in that: the anti-rotation groove in the hole groove of the main body unit can effectively prevent the locking block from rotating during working, and ensures that the locking block meshing teeth can be completely meshed with the hole groove of the wellhead; the use of the spring can assist the locking block to be quickly separated from the wellhead head, so that the tooth groove surface is not scratched, and the device can safely and stably work; the locking block and the spring can be mounted and dismounted more quickly and conveniently through the retaining ring, the mounting and dismounting time is saved, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic view of a tool for lowering a head of an underwater wellhead according to the present invention;
FIG. 2 is an isometric view of a subsea wellhead lowering tool of the present invention;
FIG. 3 is a schematic view of a lock block of the underwater wellhead lowering tool of the present invention;
FIG. 4 is a schematic view of a driving body of the underwater wellhead lowering tool of the present invention;
FIG. 5 is a schematic view of the tool being lowered from the underwater wellhead without locking the wellhead;
fig. 6 is a schematic view of the locking wellhead of the tool for lowering the wellhead of the underwater well of the present invention.
In the figure, 1-end cap, 2-bolt, 3-driving body, 4-main body unit, 5-driving body seat, 6-driving body inclined surface, 7-locking block, 8-locking block inclined surface, 9-spring, 10-hole groove, 11-baffle ring, 12-locking block meshing tooth, 13-locking block mounting seat, 14-mandrel supporting seat, 15-mandrel, 16-lug, 17-circular ring, 18-wellhead head, 19-anti-rotation groove and 20-wellhead head tooth groove.
Detailed Description
The structure and features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2, 3, and 4, the utility model relates to an underwater wellhead head lowering tool, which comprises a main unit 4, a locking block 7, a spring 9, a baffle ring 11, a driving body 3, an end cover 1, and a mandrel 14, wherein the outer wall of the main unit 4 is provided with eight hole grooves 10 with 45 degrees at intervals, the upper end of the main unit is provided with a driving body seat 5, the locking block 7 is placed in the hole groove 10 of the main unit, and the spring 9 is sleeved on the locking block 7 and placed in the hole groove 10; the retainer ring 11 is installed on the retainer ring seat through bolt connection, and the locking block 7 and the spring 9 are prevented from moving out of the hole groove 10; the driving body 3 is placed on the driving body seat 5, the end cover 1 is installed at the upper end of the main body unit 4 through bolt connection, and the middle part of the mandrel 15 is provided with external threads which are connected with the internal threads of the driving body 3.
Preferably, the body unit hole groove 10 is provided with a locking piece mounting seat 13, a baffle ring mounting seat and an anti-rotation groove 19 for limiting the rotation of the locking piece.
Preferably, one end of the locking block 7 is a 45-degree inclined surface 8, and is in contact with the driving body inclined surface 6; the other end is provided with an engaging tooth 12 which is engaged with the tooth groove of the wellhead head to realize the locking of the wellhead head; the middle part is provided with a circular ring 17 for limiting the axial movement of the locking piece, and the circular ring 17 is contacted with the bottom surface of the locking piece mounting seat 13, and a lug 16 for limiting the rotation of the locking piece is arranged on the circular ring 17 and is matched with an anti-rotation groove 19 in the hole groove 10 of the main body unit.
Preferably, the spring 9 is sleeved on the locking piece 7, one end of the spring is contacted with the circular ring 17 on the locking piece 7, and the other end of the spring is contacted with the baffle ring 11; when the wellhead is locked under the action of the driving body 3, the spring 9 is compressed to store energy under the action of axial pressure of the retaining ring 11 and the locking block circular ring 17, after the wellhead is released, the locking block 7 moves inwards under the action of spring thrust, and the auxiliary locking block meshing teeth 12 are separated from the tooth grooves 20.
Preferably, the driving body 3 is a stepped shaft and is placed in the driving body seat 5, the inner hole of the driving body 3 is provided with threads, and the lower end of the driving body 3 is provided with a 45-degree inclined surface 6 which is in matched contact with the inclined surface 8 at the end part of the locking block.
Preferably, the spindle 15 is connected to the driving body 3 by a screw, and has a supporting seat 14 at the bottom thereof, for limiting the downward movement of the body unit 4 during operation.
The utility model relates to a concrete working process of oral transfer instrument of underwater well is as follows:
the tool is installed, wherein a locking block 7 is aligned with an anti-rotation groove 19 through a convex block 16 on a circular ring 17, then the locking block is horizontally pushed onto a locking block installation seat 13, a spring 9 is sleeved on the locking block 7 and is horizontally pushed into a hole groove 10, a baffle ring 11 is further installed on a baffle ring seat through bolt connection, a driving body 3 is placed in a driving body seat 5, an end cover 1 is installed at the upper end of a main body unit 4 through bolt connection, the driving body 3 is sealed, the driving body 3 is in threaded connection with a mandrel 15, and finally the whole main body unit 4 is placed on a mandrel support seat 14.
The locking and lowering of the wellhead head 18 can be performed after the tool is installed: the whole lowering tool is connected to a drill rod through a conical thread at the upper end of a mandrel 15 and is lowered into a wellhead head 18, at the moment, the wellhead head 18 is not locked as shown in fig. 5, the mandrel 15 is driven to rotate by the rotation of the drill rod, so that the mandrel 15 and a driving body 3 move relatively, the driving body 3 gradually rotates and moves downwards due to the fact that the mandrel supporting seat 14 limits the downward movement of a main body unit 4, in the downward movement process, a driving body inclined surface 6 is in contact with a locking block inclined surface 8 and applies force to outward axial movement of a locking block 7, the locking block 7 moves outwards, a locking block ring 17 drives a spring 9 to move together, the spring 9 is further compressed, when the locking block 7 moves to the position shown in fig. 6, a locking block meshing tooth 12 is completely meshed with a wellhead head tooth groove 20, the wellhead 18 is locked, and the wellhead head 18 is locked on the lowering. The wellhead head 18 is placed in the inner cavity of the submarine conduit head, the drill rod is rotated reversely after the wellhead head reaches the installation position, the driving body 3 can move upwards under the action of the mandrel 15, the locking block 7 can gradually move inwards under the thrust action of the spring 9, the locking block meshing teeth 12 are separated from the wellhead head tooth grooves 20, the lowering tool is separated from the wellhead head 18, and the whole installation process is finished.
The above detailed description is made on an embodiment of the present invention, but the content is only the preferred embodiment of the present invention, the present invention is not limited to the above examples, and any modification and deformation made on the basis of the present invention are all within the protection scope of the present invention.
Claims (4)
1. The utility model provides a tool is transferred to oral head of underwater well, includes main part unit, locking piece, spring, fender ring, driving body, end cover and mandrel, its characterized in that: the outer wall of the main body unit is provided with eight hole grooves with 45-degree intervals, the upper end of each hole groove is provided with a driving body seat, the locking blocks are placed in the hole grooves of the main body unit, the springs are sleeved on the locking blocks and placed in the hole grooves, the retaining rings are installed on the retaining ring seats through bolt connection, the locking blocks and the springs are prevented from moving out of the hole grooves, the driving bodies are placed on the driving body seats, the end covers are installed at the upper ends of the main body unit through bolt connection, and the middle of the mandrel is provided with external threads and internal thread connection of the.
2. A downhole wellhead lowering tool as claimed in claim 1 wherein the locking piece has a 45 degree bevel at one end for engaging the bevel of the drive body and an engaging tooth at the other end, a ring in the middle for limiting axial movement of the locking piece for engaging the bottom surface of the locking piece mounting seat, and a protrusion on the ring for limiting rotation of the locking piece.
3. A subsea wellhead lowering tool as claimed in claim 1 and in which the body unit bore has a lock block mounting, a retainer ring mounting and an anti-rotation slot to limit rotation of the lock block.
4. A downhole wellhead lowering tool as claimed in claim 1 wherein the drive body is a stepped shaft with a threaded bore and a 45 degree bevel at the lower end for mating contact with the end bevel of the locking block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921105525.6U CN210422527U (en) | 2019-07-16 | 2019-07-16 | Tool for lowering underwater wellhead head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921105525.6U CN210422527U (en) | 2019-07-16 | 2019-07-16 | Tool for lowering underwater wellhead head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210422527U true CN210422527U (en) | 2020-04-28 |
Family
ID=70380850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921105525.6U Expired - Fee Related CN210422527U (en) | 2019-07-16 | 2019-07-16 | Tool for lowering underwater wellhead head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210422527U (en) |
-
2019
- 2019-07-16 CN CN201921105525.6U patent/CN210422527U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101550811B (en) | Lifting full water depth outer suspension clutch unlock underwater well head cutting recovery combined tool | |
| CN109098654B (en) | Mechanical axial rotation percussion drilling tool based on screw drilling tool | |
| CN113550716B (en) | Guide post suitable for underwater equipment installation | |
| CN210798910U (en) | Tool for lowering underwater wellhead head sleeve pipe hanger and sealing assembly | |
| CN210422527U (en) | Tool for lowering underwater wellhead head | |
| CN103452509A (en) | Wellhead descending tool | |
| CN106761506B (en) | Emergency recovery tool for tubing hanger | |
| CN103821467A (en) | Hydraulic power chuck for automatic drilling machine | |
| CN101550810B (en) | Outer suspension positioning mechanism of an underwater cutting tool | |
| CN103256013B (en) | High-temperature-resisting and anti-stall joint of down-hole motor drilling tool | |
| CN206785340U (en) | Boll-weevil hanger promptly reclaims instrument | |
| CN107489381B (en) | Overload-proof screw drilling tool | |
| CN101614118B (en) | Clutch unlocking and rotating mechanism of underwater cutting tool | |
| CN107965287B (en) | Clamping device and method for fishing spearhead of drilling tool | |
| CN202937209U (en) | Lowering tool for well-mouth head | |
| CN207660576U (en) | A kind of drilling tool spear-head clamping device | |
| CN109505557A (en) | A kind of device for being completed at the same time sub-sea drilled wells and salvaging with capping operation | |
| CN214616392U (en) | Constant-torque and constant-weight-on-bit drilling device | |
| CN107448163B (en) | Deepwater gravity type spiral automatic connector | |
| CN206235459U (en) | One kind is used for underwater wellhead system ground test device | |
| CN111794709B (en) | Safe, environmental protection, can pressure release seal well device | |
| CN212454298U (en) | Three-axis vibration stabilizer for drill bit | |
| CN201778736U (en) | Anti-corrosion cap for underwater well head | |
| CN111502569A (en) | Underground anti-reverse debris bed flushing tool | |
| CN210396686U (en) | Rotary press-in type combined sealing device for ocean wellhead |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 Termination date: 20210716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |