CN114198045B - Inner tree cap device for shallow water underwater Christmas tree and application method thereof - Google Patents
Inner tree cap device for shallow water underwater Christmas tree and application method thereof Download PDFInfo
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- CN114198045B CN114198045B CN202111468444.4A CN202111468444A CN114198045B CN 114198045 B CN114198045 B CN 114198045B CN 202111468444 A CN202111468444 A CN 202111468444A CN 114198045 B CN114198045 B CN 114198045B
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- 241000191291 Abies alba Species 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 claims abstract description 27
- 238000011084 recovery Methods 0.000 claims description 99
- 230000005284 excitation Effects 0.000 claims description 80
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an inner tree cap device for a shallow water underwater Christmas tree and a use method thereof, wherein the inner tree cap device comprises an inner tree cap, an inner tree cap lowering tool and an inner tree cap recycling tool; the inner tree cap lowering tool is used for butting the inner tree caps and completing lowering and locking of the inner tree caps; the inner tree cap recycling tool is used for recycling the inner tree caps. The invention provides an inner tree cap device for a shallow water underwater Christmas tree and a use method thereof.
Description
Technical Field
The invention relates to the technical field of petroleum drilling equipment, in particular to an inner tree cap device for a shallow water underwater Christmas tree and a using method thereof.
Background
The underwater Christmas tree is widely applied to the exploitation process of the underwater oil and gas field, and is very important equipment in the well drilling and completion and oil extraction processes. The inner tree cap of the Christmas tree is one of main components of the underwater Christmas tree, is arranged inside the Christmas tree and is positioned at the upper part of the oil pipe hanger assembly and used for preventing rock fragments, impurities and the like from falling into a gap between the pipe hanger and the tree body and bearing the pressure from above and below. The inner tree cap of the conventional underwater Christmas tree is installed and recovered by adopting an underwater robot, and in a shallow water operation environment, the underwater robot has poor operability and relatively high underwater operation difficulty for the shallow water underwater Christmas tree.
Disclosure of Invention
The invention aims to provide an inner tree cap device for a shallow water underwater Christmas tree and a using method thereof, which are used for solving the problems that an underwater robot is poor in operability and relatively large in operation difficulty in a shallow water operation environment.
The invention provides an inner tree cap device for a shallow water underwater Christmas tree, which is characterized by comprising an inner tree cap, an inner tree cap lowering tool and an inner tree cap recycling tool, wherein the inner tree cap lowering tool is in butt joint with the inner tree cap for lowering and locking the inner tree cap; the inner tree cap recycling tool is in butt joint with the inner tree cap and used for recycling the inner tree cap.
Further, the inner tree cap comprises an inner tree cap body, an inner tree cap locking ring and an inner tree cap excitation ring, wherein the lower part of the inner tree cap excitation ring is fixedly connected with the upper end of the inner tree cap body through a pin, and the inner tree cap excitation ring can move up and down on the inner tree cap body but cannot rotate; the inner tree cap locking ring is sleeved on the outer side of the joint of the inner tree cap locking ring and the inner tree cap body and used for limiting the outward horizontal displacement of the inner tree cap locking ring; when the inner tree cap energizing ring moves down into the inner tree cap locking ring, the inner tree cap locking ring is spread so that the inner tree cap locking ring locks the inner tree cap body.
Further, the outer wall of the upper end of the inner tree cap body is vertically provided with a plurality of pin sliding grooves, the pin sliding grooves are annularly and uniformly distributed on the outer wall of the upper end of the inner tree cap body, pin holes are annularly and uniformly formed in the annular wall of the lower part of the inner tree cap excitation ring, and if the pins respectively penetrate through the pin holes of the inner tree cap excitation ring and extend into the corresponding pin sliding grooves of the inner tree cap body.
Further, an opening is arranged on the inner tree cap locking ring, an upper locking tooth and a lower locking tooth are respectively arranged on the upper part and the lower part of the outer wall of the inner tree cap locking ring and are respectively used for preventing the inner tree cap excitation ring from moving upwards or downwards to fall off from the inner tree cap body.
Further, the inner tree cap recycling tool comprises an inner tree cap recycling tool mandrel and a recycling annular sleeve, and the recycling annular sleeve is sleeved at the lower part of the inner tree cap recycling tool mandrel; the upper end of the inner tree cap body is provided with an internal thread, and the outer wall of the bottom end of the mandrel of the inner tree cap lowering tool is provided with an external thread; an outer cambered surface is arranged on the outer wall of the bottom end of the annular sleeve for lowering the inner tree cap, an inner cambered surface is arranged at the top end port of the inner tree cap excitation ring, and the inner cambered surface is concaved inwards to form a transition surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring; when the inner tree cap recycling tool is abutted against the inner tree cap, the inner threads of the inner tree cap body are matched with the outer threads at the bottom end of the inner tree cap lowering tool, so that threaded connection is realized; meanwhile, the inner cambered surface of the top end port of the inner tree cap excitation ring is matched with the outer cambered surface of the inner tree cap lowering tool, so that the inner tree cap lowering tool is clamped in the inner tree cap; when the inner tree cap lowering tool mandrel is rotated, the external thread and the internal thread are matched, the inner tree cap lowering tool mandrel and the lower annular sleeve thereof are driven to move downwards, the inner tree cap excitation ring is pushed to move downwards, and accordingly the inner tree cap locking ring is excited to lock the inner tree cap.
Further, a gap is reserved between the downward annular sleeve and the inner tree cap downward tool mandrel, and the downward annular sleeve can rotate around the inner tree cap downward tool mandrel so as to guide and centralize the inner tree cap downward tool mandrel in the downward process.
Further, the inner tree cap recycling tool comprises an inner tree cap recycling tool mandrel and a recycling annular sleeve, and the recycling annular sleeve is sleeved at the lower part of the inner tree cap recycling tool mandrel; an outer cambered surface is arranged on the outer wall of the bottom end of the recovery annular sleeve of the inner tree cap recovery tool, an inner cambered surface is arranged at the top end port of the inner tree cap excitation ring, and the inner cambered surface is concaved inwards to form a transition surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring; the inner tree cap excitation ring is adjacent to the inner wall of the inner cambered surface at intervals and uniformly provided with a plurality of clamping grooves, the inner tree cap recovery tool comprises an inner tree cap recovery tool mandrel, the lower end of the inner tree cap recovery tool mandrel is annularly and uniformly provided with a plurality of spring pins, and when the inner tree cap recovery tool is abutted to the inner tree cap, the inner cambered surface of the top end port of the inner tree cap excitation ring is matched with the outer cambered surface of the inner tree cap recovery tool, so that the inner tree cap lowering tool or the inner tree cap recovery tool is clamped in the inner tree cap; meanwhile, a plurality of spring pins of the inner tree cap recovery tool are respectively buckled on a plurality of clamping grooves of the inner tree cap excitation ring; in the process of recovering the inner tree cap by using the inner tree cap recovery tool, when the spring pin of the inner tree cap recovery tool enters the clamping groove of the inner tree cap excitation ring, the spring pin applies vertical upward force to the clamping groove, the inner tree cap excitation ring is pulled to move upwards, the inner tree cap excitation ring is separated from the inner tree cap locking ring, the force for expanding the inner tree cap locking ring disappears, the inner tree cap locking ring realizes unlocking of the inner tree cap, vertical upward force is continuously applied, and the inner tree cap is lifted, so that the recovery of the inner tree cap is completed.
Further, a gap is reserved between the recovery annular sleeve and the inner tree cap recovery tool mandrel, and the recovery annular sleeve can rotate around the inner tree cap recovery tool mandrel so as to guide, centralize and sit and hang the inner tree cap recovery tool mandrel in the recovery process.
Further, a dovetail groove is circumferentially arranged in the middle of the outer wall of the inner tree cap body, and a sealing ring is arranged on the dovetail groove.
The invention also relates to a use method of the inner tree cap device, which adopts the inner tree cap device for the shallow water underwater Christmas tree and comprises the following steps:
lifting the inner tree cap lowering tool to the upper part of the inner tree cap, slowly lowering, completing the matching of the external thread at the bottom end of the mandrel of the inner tree cap lowering tool and the internal thread of the inner tree cap body, rotating the inner tree cap lowering tool, and completing the butt joint of the inner tree cap lowering tool and the inner tree cap;
the top end of the inner tree cap lowering tool is butted with a drill rod, and the inner tree cap is sent into the inner cavity of the christmas tree by using the drill rod to lower the inner tree cap lowering tool;
the rotary drill rod drives the mandrel of the inner tree cap lowering tool to rotate, the external thread at the bottom end of the mandrel of the inner tree cap lowering tool is further matched with the internal thread of the inner tree cap body, the inner tree cap lowering tool moves downwards to drive the annular sleeve of the inner tree cap lowering tool to move downwards, so that the inner tree cap excitation ring is pushed to move downwards, the pin is sheared, the inner tree cap excitation ring moves downwards further, the inner tree cap locking ring is unfolded, and the inner tree cap is locked to the inner cavity of the christmas tree; the drill rod is lifted, and the locking of the inner tree cap is verified and ensured;
the rotary drill rod drives the mandrel of the inner tree cap lowering tool to rotate, so that the external threads at the bottom end of the mandrel of the inner tree cap lowering tool are separated from the internal threads of the inner tree cap body, the mandrel of the inner tree cap lowering tool and the lowering annular sleeve move upwards, the inner tree cap lowering tool is taken off, the drill rod is lifted up, and the recovery of the inner tree cap lowering tool is completed;
docking a drill rod on the inner tree cap recovery tool; lowering the inner tree cap recycling tool by utilizing the drill rod until the inner tree cap recycling tool is hung to the inner cambered surface of the inner tree cap excitation ring; releasing the drill rod;
the rotary drill rod drives the inner tree cap recovery tool to rotate, the spring pin of the inner tree cap recovery tool enters the clamping groove of the inner tree cap excitation ring, vertical upward force is slowly applied, the fact that the spring pin of the inner tree cap recovery tool enters the clamping groove of the inner tree cap excitation ring is confirmed, vertical upward force is continuously applied to the drill rod and the inner tree cap recovery tool, the inner tree cap excitation ring is driven to move upwards, the inner tree cap excitation ring is separated from the inner tree cap locking ring, the force for expanding the inner tree cap locking ring disappears, the inner tree cap locking ring realizes unlocking of the inner tree cap, vertical upward force is continuously applied, the inner tree cap is lifted, and recovery of the inner tree cap is completed.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses an inner tree cap device for a shallow water underwater Christmas tree and a use method thereof, wherein the inner tree cap device comprises an inner tree cap, an inner tree cap lowering tool and an inner tree cap recycling tool, and the use method comprises the lowering installation and recycling of the inner tree cap device; the inner tree cap device can realize locking and releasing, the drill rod is utilized to realize the lowering, mounting, locking and recycling of the underwater inner tree cap, underwater operation is reduced, namely, the excitation of the inner tree cap locking ring and the hand-off of the inner tree cap lowering tool are completed by rotating the feeding drill rod on the ground, the recycling of the inner tree cap is completed by lifting the drill rod, the underwater operation is avoided by using engineering equipment such as an underwater robot, and the operation difficulty is reduced. The invention provides an inner tree cap device for a shallow water underwater Christmas tree and a use method thereof.
Drawings
Fig. 1 is a schematic view of the external structure of an inner tree cap according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of the internal structure of the inner tree cap according to embodiment 1 of the present invention;
FIG. 3 is an enlarged view of a junction of an inner cap body, an inner cap locking ring and an inner cap energizing ring according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of an inner tree cap locking ring according to embodiment 1 of the present invention.
FIG. 5 is a top view of the inner tree cap provided in embodiment 1 of the present invention;
FIG. 6 is a schematic view of the external structure of the tool for setting down an inner tree cap according to embodiment 1 of the present invention;
fig. 7 is a schematic diagram of the internal structure of the tool for lowering the tree cap according to embodiment 1 of the present invention;
fig. 8 is a schematic diagram of the external structure of the tool for recovering an inner tree cap according to embodiment 1 of the present invention;
fig. 9 is a schematic diagram of the internal structure of the tool for recovering an inner tree cap according to embodiment 1 of the present invention.
Reference numerals illustrate:
1-an inner tree cap, 11-an inner tree cap body, 111-a transverse baffle, 112-an internal thread and 113-a dovetail groove; 12-an inner tree cap locking ring, 120-an opening, 121-upper locking teeth, 122-lower locking teeth; 13-an inner tree cap excitation ring, 131-an inner cambered surface and 132-a clamping groove; 14-pins and 140-pin sliding grooves;
2-inner tree cap lowering tool, 21-inner tree cap lowering tool mandrel, 22-lowering annular sleeve, 23-lowering drill rod screw thread, 24-external screw thread and 25-external cambered surface;
3-inner tree cap recovery tool, 31-inner tree cap recovery tool mandrel, 32-recovery annular sleeve, 33-recovery drill rod screw thread, 34-spring pin.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1: inner tree cap device for shallow water underwater Christmas tree
Embodiment 1 provides an inner tree cap apparatus for a shallow water subsea tree, the structure of which is described in detail below with reference to the drawings.
The inner tree cap device comprises an inner tree cap 1, an inner tree cap lowering tool 2 and an inner tree cap recycling tool 3, wherein the inner tree cap lowering tool 2 is in butt joint with the inner tree cap 1 for lowering and locking the inner tree cap 1; the inner tree cap recovery tool 3 is abutted with the inner tree cap 1 for recovering the inner tree cap 1.
Referring specifically to fig. 1 and 2, inner tree cap 1 includes an inner tree cap body 11, an inner tree cap locking ring 12 and an inner tree cap energizing ring 13,
the lower part of the inner tree cap excitation ring 13 is fixedly connected with the upper end of the inner tree cap body 11 through pins 14, specifically, referring to fig. 3, the outer wall of the upper end of the inner tree cap body 11 is vertically provided with a plurality of pin sliding grooves 140, the pin sliding grooves 140 are uniformly distributed on the outer wall of the upper end of the inner tree cap body 11 in a circumferential direction, pin holes are uniformly formed in the annular wall of the lower part of the inner tree cap excitation ring 13 in a circumferential direction, and if the pins 14 respectively penetrate through the pin holes of the inner tree cap excitation ring 13 and extend into the corresponding pin sliding grooves 140 of the inner tree cap body 11, the inner tree cap excitation ring 13 can move up and down on the inner tree cap body 11 but cannot rotate.
The inner cap locking ring 12 is sleeved on the outer side of the joint of the inner cap locking ring 12 and the inner cap body 11 and is used for limiting the outward horizontal displacement of the inner cap locking ring 12.
In order to prevent the fluid in the inner cap body 11 from flowing up and down, specifically, the inner cap body 11 is a hollow cylinder, and a transverse baffle 111 is disposed in the middle of the cylinder.
In order to isolate the upper annular pressure and the lower annular pressure outside the inner tree cap device, a dovetail groove 113 is circumferentially arranged in the middle of the outer wall of the inner tree cap body 11, and a sealing ring is arranged on the dovetail groove 113, as shown in fig. 1 to 3.
In order to limit the falling off of the inner cap energizing ring 13 from the inner cap body 11, in one embodiment, referring to fig. 4, an opening 120 is provided on the inner cap locking ring 12, and upper and lower locking teeth 121 and 122 are provided on the upper and lower portions of the outer wall of the inner cap locking ring 12, respectively, for preventing the inner cap energizing ring 13 from moving upward or downward to fall off from the inner cap body 11.
When the inner cap energizing ring 13 moves down into the inner cap locking ring 12, the inner cap locking ring 12 is stretched so that the inner cap locking ring 12 locks the inner cap body 11 and thereby locks the tree cavity in the inner cap body 11.
Referring to fig. 6 to 7, the inner tree cap lowering tool 2 includes an inner tree cap lowering tool mandrel 21 and a lowering annular sleeve 22, a drilling fluid passage is provided inside the inner tree cap lowering tool mandrel 21, and the lowering annular sleeve 22 is sleeved on the middle lower portion of the inner tree cap lowering tool mandrel 21.
The inner wall of the top end of the mandrel 21 of the inner tree cap lowering tool is provided with a lowering drill rod thread 23 for butting a drill rod so as to finish the lowering of the inner tree cap 1 through the inner tree cap lowering tool 2;
the outer wall of the bottom end of the inner tree cap lowering tool mandrel 21 is provided with an external thread 24 which is used for being matched with the internal thread 112 at the upper end of the inner tree cap body 11 to realize the butt joint with the inner tree cap 1 and finish the lowering of the inner tree cap 1. Referring to fig. 2 and 3 in combination, specifically, the upper end of the inner cap body 11 is provided with an internal thread 112, and an external thread 24 is provided on the outer wall of the bottom end of the inner cap lowering tool mandrel 21, and when the inner cap recovery tool 3 is abutted against the inner cap 1, the internal thread 112 of the inner cap body 11 is engaged with the external thread 24 of the bottom end of the inner cap lowering tool 2, thereby realizing threaded connection.
The outer wall of the bottom end of the annular sleeve 22 of the inner tree cap lowering tool 2 is provided with an outer cambered surface 25 which is used for being matched with the inner cambered surface 131 of the top end port of the inner tree cap excitation ring 13, so that the inner tree cap 1 can be docked with the inner tree cap 1 conveniently, and the inner tree cap 1 can be lowered. Referring to fig. 1, 2 and 5, the top end port of the inner tree cap excitation ring 13 is provided with an inner cambered surface 131, and the inner cambered surface 131 is concave inwards to form a transition surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring 13; preferably, the inner arc 131 forms an angle of 45 ° with the outer or inner wall of the inner tree cap energizing ring 13. When the inner tree cap lowering tool 2 is abutted against the inner tree cap 1, the inner cambered surface 131 of the top end port of the inner tree cap excitation ring 13 is matched with the outer cambered surface 25 of the inner tree cap lowering tool 2, so that the inner tree cap lowering tool 2 is clamped in the inner tree cap 1.
In the process of using the inner tree cap 1 through the inner tree cap lowering tool 2, when the inner tree cap lowering tool mandrel 21 is rotated, the external threads 24 and the internal threads 112 are matched, and simultaneously drive the inner tree cap lowering tool mandrel 21 and the lower annular sleeve 22 thereof to move downwards, so that the inner tree cap excitation ring 13 is pushed to move downwards, and the inner tree cap locking ring 12 is excited to lock the inner tree cap 1.
Wherein, leave the clearance between annular sleeve 22 and the interior tree cap and transfer the tool dabber 21, transfer annular sleeve 22 can rotate around interior tree cap and transfer the tool dabber 21 to accomplish the direction to interior tree cap and transfer the tool dabber 21 to right in the process of transferring.
Referring to fig. 8 to 9, the inner cap recovery tool 3 includes an inner cap recovery tool mandrel 31 and a recovery annular sleeve 32, a drilling fluid passage is provided inside the inner cap recovery tool mandrel 31, and the recovery annular sleeve 32 is sleeved on the lower portion of the inner cap recovery tool mandrel 31.
The inner wall of the top end of the inner tree cap recovery tool mandrel 31 is provided with a recovery drill rod thread 33 for butting a drill rod so as to complete the recovery of the inner tree cap 1 through the inner tree cap recovery tool 3;
the lower end of the inner cap retrieving tool mandrel 31 is provided with a plurality of spring pins 34 evenly circumferentially, and in one specific embodiment, the number of the spring pins 34 is four, and the four spring pins 34 are evenly distributed on the shaft wall of the inner cap retrieving tool mandrel 31 below the retrieving annular sleeve 32.
The outer wall of the bottom end of the recovery annular sleeve 32 of the inner tree cap recovery tool 3 is provided with an outer cambered surface 25 which is used for being matched with the inner cambered surface 131 of the top end port of the inner tree cap excitation ring 13, so that the inner tree cap 1 can be conveniently butted with the inner tree cap 1, and the inner tree cap 1 can be recovered. Referring to fig. 1, 2 and 5, the top end port of the inner tree cap excitation ring 13 is provided with an inner cambered surface 131, and the inner cambered surface 131 is concave inwards to form a transition surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring 13; preferably, the inner arc 131 forms an angle of 45 ° with the outer or inner wall of the inner tree cap energizing ring 13. When the inner tree cap recovery tool 3 is abutted against the inner tree cap 1, the inner cambered surface 131 of the top end port of the inner tree cap excitation ring 13 is matched with the outer cambered surface 25 of the inner tree cap recovery tool 3, so that the inner tree cap recovery tool 3 is clamped in the inner tree cap 1.
Referring to fig. 1, 2 and 5 and fig. 8 and 9, a plurality of clamping grooves 132 are uniformly arranged on the inner wall of the inner tree cap excitation ring 13 adjacent to the inner cambered surface 131 at intervals, a plurality of spring pins 34 are uniformly arranged on the lower end of the inner tree cap recovery tool mandrel 31 in the circumferential direction, and when the inner tree cap recovery tool 3 is abutted against the inner tree cap 1, the plurality of spring pins 34 of the inner tree cap recovery tool 3 are respectively buckled on the plurality of clamping grooves 132 of the inner tree cap excitation ring 13.
In the process of recovering the inner tree cap 1 by using the inner tree cap recovery tool 3, when the spring pin 34 of the inner tree cap recovery tool 3 enters the clamping groove 132 of the inner tree cap excitation ring 13, the spring pin 34 applies vertical upward force to the clamping groove 132, the inner tree cap excitation ring 13 is pulled to move upwards, the inner tree cap excitation ring 13 is separated from the inner tree cap locking ring 12, the force for expanding the inner tree cap locking ring 12 disappears, the inner tree cap locking ring 12 realizes unlocking of the inner tree cap 1, vertical upward force is continuously applied, the inner tree cap 1 is lifted, and the recovery of the inner tree cap 1 is completed.
Wherein, a gap is reserved between the recovery annular sleeve 32 and the inner tree cap recovery tool mandrel 31, and the recovery annular sleeve 32 can rotate around the inner tree cap recovery tool mandrel 31 to guide, centralize and sit-hang the inner tree cap recovery tool mandrel 31 in the recovery process.
Example 2: application method of inner tree cap device
The method for using the inner tree cap device provided in the embodiment 2 adopts the inner tree cap device for the shallow water underwater christmas tree in the embodiment 1, and the method for using the inner tree cap device comprises the following steps:
step S1: the inner tree cap lowering tool 2 is abutted with the inner tree cap 1
Lifting the inner tree cap lowering tool 2 to the position above the inner tree cap 1, slowly lowering, completing the matching of the external threads 24 at the bottom end of the mandrel 21 of the inner tree cap lowering tool and the internal threads 112 of the inner tree cap body 11, rotating the inner tree cap lowering tool 2, and completing the butt joint of the inner tree cap lowering tool 2 and the inner tree cap 1;
step S2: inner tree cap 1 to tree cavity using drill pipe running and inner tree cap lowering tool 2
The top end of the inner tree cap lowering tool 2 is butted with a drill rod, and the inner tree cap 1 is sent into the inner cavity of the christmas tree by using the drill rod to lower the inner tree cap lowering tool 2;
step S3: locking inner tree cap 1
The rotary drill rod drives the inner tree cap lowering tool mandrel 21 to rotate, the external thread 24 at the bottom end of the inner tree cap lowering tool mandrel 21 is further matched with the internal thread 112 of the inner tree cap body 11, the inner tree cap lowering tool 2 moves downwards, the lowering annular sleeve 22 of the inner tree cap lowering tool 2 is driven to move downwards, so that the inner tree cap excitation ring 13 is pushed to move downwards, the pin 14 is sheared, the inner tree cap excitation ring 13 moves downwards further, the inner tree cap locking ring 12 is propped open, and the inner tree cap 1 is locked to the inner cavity of the christmas tree; the drill rod is lifted, and the locking of the inner tree cap 1 is verified and ensured;
step S4: tool 2 for lowering tree cap in hand
The rotary drill rod drives the inner tree cap lowering tool mandrel 21 to rotate, so that the outer threads 24 at the bottom end of the inner tree cap lowering tool mandrel 21 are separated from the inner threads 112 of the inner tree cap body 11, the inner tree cap lowering tool mandrel 21 and the lowering annular sleeve 22 move upwards, the inner tree cap lowering tool 2 is taken off, the drill rod is lifted up, and the recovery of the inner tree cap lowering tool 2 is completed;
step S5: the inner tree cap recovery tool 3 is put down
Docking a drill rod on the inner tree cap recovery tool 3; the inner tree cap recovery tool 3 is lowered by utilizing the drill rod, and the inner tree cap 1 is lowered until the inner tree cap recovery tool 3 is hung to the inner cambered surface 131 of the inner tree cap excitation ring 13; releasing the drill rod;
step S6: inner tree cap 1 recovery
The rotary drill rod drives the inner tree cap recovery tool 3 to rotate, the spring pin 34 of the inner tree cap recovery tool 3 enters the clamping groove 132 of the inner tree cap excitation ring 13, vertical upward force is slowly applied, the fact that the spring pin 34 of the inner tree cap recovery tool 3 enters the clamping groove 132 of the inner tree cap excitation ring 13 is confirmed, vertical upward force is continuously applied to the drill rod and the inner tree cap recovery tool 3, the inner tree cap excitation ring 13 is driven to move upwards, the inner tree cap excitation ring 13 is separated from the inner tree cap locking ring 12, the force for expanding the inner tree cap locking ring 12 disappears, the inner tree cap locking ring 12 realizes unlocking of the inner tree cap 1, vertical upward force is continuously applied, the inner tree cap 1 is lifted, and recovery of the inner tree cap 1 is completed.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (8)
1. An inner tree cap device for shallow water underwater christmas tree is characterized by comprising an inner tree cap (1), an inner tree cap lowering tool (2) and an inner tree cap recycling tool (3), wherein the inner tree cap lowering tool (2) is in butt joint with the inner tree cap (1) for lowering and locking the inner tree cap (1); the inner tree cap recycling tool (3) is in butt joint with the inner tree cap (1) and used for recycling the inner tree cap (1);
the inner tree cap (1) comprises an inner tree cap body (11), an inner tree cap locking ring (12) and an inner tree cap excitation ring (13), wherein the lower part of the inner tree cap excitation ring (13) is fixedly connected with the upper end of the inner tree cap body (11) through a pin (14), and the inner tree cap excitation ring (13) can move up and down on the inner tree cap body (11) but cannot rotate; the inner tree cap locking ring (12) is sleeved on the outer side of the joint of the inner tree cap excitation ring (13) and the inner tree cap body (11) and used for limiting the outward horizontal displacement of the inner tree cap excitation ring (13); when the inner tree cap excitation ring (13) moves downwards into the inner tree cap locking ring (12), the inner tree cap locking ring (12) is propped open, so that the inner tree cap locking ring (12) locks the inner tree cap body (11);
the inner tree cap recovery tool (3) comprises an inner tree cap recovery tool mandrel (31) and a recovery annular sleeve (32), and the recovery annular sleeve (32) is sleeved on the lower part of the inner tree cap recovery tool mandrel (31); an outer cambered surface (25) is arranged on the outer wall of the bottom end of the recovery annular sleeve (32) of the inner tree cap recovery tool (3), an inner cambered surface (131) is arranged at the top end port of the inner tree cap excitation ring (13), and the inner cambered surface (131) is concaved inwards to form an excessive surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring (13); the inner tree cap excitation ring (13) is uniformly provided with a plurality of clamping grooves (132) at intervals adjacent to the inner wall of the inner cambered surface (131), the lower end of the inner tree cap recovery tool mandrel (31) is uniformly provided with a plurality of spring pins (34) in the circumferential direction, and when the inner tree cap recovery tool (3) is abutted against the inner tree cap (1), the inner cambered surface (131) of the top end port of the inner tree cap excitation ring (13) is matched with the outer cambered surface (25) of the inner tree cap recovery tool (3) so that the inner tree cap lowering tool (2) or the inner tree cap recovery tool (3) is clamped in the inner tree cap (1); simultaneously, a plurality of spring pins (34) of the inner tree cap recovery tool (3) are respectively buckled on a plurality of clamping grooves (132) of the inner tree cap excitation ring (13);
in the process of recovering the inner tree cap (1) by using the inner tree cap recovery tool (3), when the spring pin (34) of the inner tree cap recovery tool (3) enters the clamping groove (132) of the inner tree cap excitation ring (13), the spring pin (34) applies vertical upward force to the clamping groove (132), pulls the inner tree cap excitation ring (13) to move upward, so that the inner tree cap excitation ring (13) is separated from the inner tree cap locking ring (12), the force for expanding the inner tree cap locking ring (12) disappears, the inner tree cap locking ring (12) realizes unlocking of the inner tree cap (1), vertical upward force is continuously applied, and the inner tree cap (1) is lifted, so that the recovery of the inner tree cap (1) is completed.
2. The inner tree cap device according to claim 1, wherein,
the upper end outer wall of interior tree cap body (11) is vertical to be equipped with a plurality of pin spouts (140), and a plurality of pin spouts (140) hoop evenly distributed in on the upper end outer wall of interior tree cap body (11), the annular on the rampart of interior tree cap excitation ring (13) lower part evenly is equipped with the cotter hole, if a plurality of pin (14) wear respectively in the cotter hole of interior tree cap excitation ring (13) stretches into in corresponding pin spout (140) of interior tree cap body (11).
3. The inner tree cap device according to claim 1, wherein,
the inner tree cap locking ring (12) is provided with an opening (120), and the upper part and the lower part of the outer wall of the inner tree cap locking ring (12) are respectively provided with an upper locking tooth (121) and a lower locking tooth (122) which are respectively used for preventing the inner tree cap excitation ring (13) from moving upwards or downwards to fall off from the inner tree cap body (11).
4. The inner tree cap device according to claim 1, wherein,
the inner tree cap lowering tool (2) comprises an inner tree cap lowering tool mandrel (21) and a lowering annular sleeve (22), and the lower part of the inner tree cap lowering tool mandrel (21) is sleeved with the lowering annular sleeve (22);
an internal thread (112) is arranged at the upper end of the inner tree cap body (11), and an external thread (24) is arranged on the outer wall of the bottom end of the inner tree cap lowering tool mandrel (21);
an outer cambered surface (25) is arranged on the outer wall of the bottom end of the annular sleeve (22) of the inner tree cap lowering tool (2), an inner cambered surface (131) is arranged at the top end port of the inner tree cap excitation ring (13), and the inner cambered surface (131) is concaved inwards to form an excessive surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring (13);
when the inner tree cap lowering tool (2) is abutted against the inner tree cap (1), the inner threads (112) of the inner tree cap body (11) are matched with the outer threads (24) at the bottom end of the inner tree cap lowering tool (2), so that threaded connection is realized; meanwhile, an inner cambered surface (131) at the top end port of the inner tree cap excitation ring (13) is matched with an outer cambered surface (25) of the inner tree cap lowering tool (2) so that the inner tree cap lowering tool (2) is clamped in the inner tree cap (1);
when the inner tree cap lowering tool mandrel (21) is rotated, the external thread (24) and the internal thread (112) are matched, and meanwhile, the inner tree cap lowering tool mandrel (21) and the lowering annular sleeve (22) thereof are driven to move downwards, the inner tree cap excitation ring (13) is pushed to move downwards, and accordingly the inner tree cap locking ring (12) is excited to lock the inner tree cap (1).
5. The inner tree cap device according to claim 4, wherein,
and a gap is reserved between the lower annular sleeve (22) and the inner tree cap lower tool mandrel (21), and the lower annular sleeve (22) can rotate around the inner tree cap lower tool mandrel (21) so as to guide and centralize the inner tree cap lower tool mandrel (21) in the lower process.
6. The inner tree cap device according to claim 1, wherein,
and a gap is reserved between the recovery annular sleeve (32) and the inner tree cap recovery tool mandrel (31), and the recovery annular sleeve (32) can rotate around the inner tree cap recovery tool mandrel (31) so as to guide, centralize and sit and hang the inner tree cap recovery tool mandrel (31) in the recovery process.
7. The inner tree cap device according to claim 1, wherein,
the middle part of the outer wall of the inner tree cap body (11) is provided with a dovetail groove (113) in a circumferential direction, and the dovetail groove (113) is provided with a sealing ring.
8. A method of using an inner tree cap apparatus for a shallow water subsea tree according to claims 1 to 7, comprising:
lifting the inner tree cap lowering tool (2) to the position above the inner tree cap (1), slowly lowering, completing the matching of the external thread (24) at the bottom end of the mandrel (21) of the inner tree cap lowering tool and the internal thread (112) of the inner tree cap body (11), rotating the inner tree cap lowering tool (2), and completing the butt joint of the inner tree cap lowering tool (2) and the inner tree cap (1);
the top end of the inner tree cap lowering tool (2) is butted with a drill rod, and the inner tree cap (1) is sent into the inner cavity of the christmas tree by using the drill rod to lower the inner tree cap lowering tool (2);
the rotary drill rod drives the mandrel (21) of the inner tree cap lowering tool to rotate, the external thread (24) at the bottom end of the mandrel (21) of the inner tree cap lowering tool is further matched with the internal thread (112) of the inner tree cap body (11), the inner tree cap lowering tool (2) moves downwards to drive the annular sleeve (22) of the inner tree cap lowering tool (2) to move downwards, so that the inner tree cap excitation ring (13) is pushed to move downwards, the pin (14) is sheared, the inner tree cap excitation ring (13) moves downwards further, the inner tree cap locking ring (12) is propped up, and the inner tree cap (1) is locked to the inner cavity of the Christmas tree; the drill rod is lifted, and the locking of the inner tree cap (1) is verified and ensured;
the rotary drill rod drives the inner tree cap lowering tool mandrel (21) to rotate, so that the outer threads (24) at the bottom end of the inner tree cap lowering tool mandrel (21) are separated from the inner threads (112) of the inner tree cap body (11), the inner tree cap lowering tool mandrel (21) and the lowering annular sleeve (22) move upwards, the inner tree cap lowering tool (2) is lifted up by taking off the drill rod, and the recovery of the inner tree cap lowering tool (2) is completed;
docking a drill rod on the inner tree cap recovery tool (3); the inner tree cap recovery tool (3) is lowered by utilizing the drill rod, and the inner tree cap (1) is lowered until the inner tree cap recovery tool (3) is hung to an inner cambered surface (131) of the inner tree cap excitation ring (13); releasing the drill rod;
the rotary drill rod drives the inner tree cap recovery tool (3) to rotate, a spring pin (34) of the inner tree cap recovery tool (3) enters a clamping groove (132) of the inner tree cap excitation ring (13), vertical upward force is slowly applied, the fact that the spring pin (34) of the inner tree cap recovery tool (3) enters the clamping groove (132) of the inner tree cap excitation ring (13) is confirmed, vertical upward force is continuously applied to the drill rod and the inner tree cap recovery tool (3), the inner tree cap excitation ring (13) is driven to move upwards, the inner tree cap excitation ring (13) is separated from the inner tree cap locking ring (12), the force for expanding the inner tree cap locking ring (12) disappears, the inner tree cap locking ring (12) realizes unlocking of the inner tree cap (1), vertical upward force is continuously applied, and the inner tree cap (1) is lifted, so that recovery of the inner tree cap (1) is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111468444.4A CN114198045B (en) | 2021-12-03 | 2021-12-03 | Inner tree cap device for shallow water underwater Christmas tree and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111468444.4A CN114198045B (en) | 2021-12-03 | 2021-12-03 | Inner tree cap device for shallow water underwater Christmas tree and application method thereof |
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| Publication Number | Publication Date |
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| CN114198045A CN114198045A (en) | 2022-03-18 |
| CN114198045B true CN114198045B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111468444.4A Active CN114198045B (en) | 2021-12-03 | 2021-12-03 | Inner tree cap device for shallow water underwater Christmas tree and application method thereof |
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| CN (1) | CN114198045B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4405016A (en) * | 1980-12-18 | 1983-09-20 | Smith International, Inc. | Underwater Christmas tree cap and lockdown apparatus |
| CN102383757A (en) * | 2011-11-21 | 2012-03-21 | 江汉石油钻头股份有限公司 | Connection device for underwater production tree cup |
| CN103277065A (en) * | 2013-05-23 | 2013-09-04 | 宝鸡石油机械有限责任公司 | Underwater Christmas tree cap |
| CN203321407U (en) * | 2013-05-24 | 2013-12-04 | 重庆前卫海洋石油工程设备有限责任公司 | Christmas tree cap |
| CN203822239U (en) * | 2014-04-22 | 2014-09-10 | 美钻能源科技(上海)有限公司 | Internal Christmas tree cap for underwater horizontal Christmas tree |
| CN107558940A (en) * | 2017-10-12 | 2018-01-09 | 中国海洋石油总公司 | A kind of light-duty well repairing device in deep water hydrocarbon field and method |
| US9926760B1 (en) * | 2017-04-12 | 2018-03-27 | Onesubsea Ip Uk Limited | Subsea tree cap system deployable via remotely operated vehicle |
| CN107939328A (en) * | 2017-11-29 | 2018-04-20 | 重庆前卫海洋石油工程设备有限责任公司 | Underwater production tree cup running tool |
| CN108561094A (en) * | 2018-05-19 | 2018-09-21 | 山东科瑞机械制造有限公司 | A kind of subsea production tree decentralization installation testing tool |
| CN111894501A (en) * | 2020-08-19 | 2020-11-06 | 天津克睿特维科技发展有限公司 | Lowering and recycling device for packer in casing and construction process of lowering and recycling device |
| CN213269820U (en) * | 2020-09-15 | 2021-05-25 | 金湖县源景机械有限公司 | Tool for taking and delivering cap of subsea Christmas tree |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007351426B2 (en) * | 2006-10-16 | 2011-01-06 | Aker Solutions Inc. | Subsea ROV retrievable tree cap |
| US7743832B2 (en) * | 2007-03-23 | 2010-06-29 | Vetco Gray Inc. | Method of running a tubing hanger and internal tree cap simultaneously |
| US7621338B2 (en) * | 2007-07-27 | 2009-11-24 | Vetco Gray Inc. | Non-orienting tree cap |
| US8230928B2 (en) * | 2008-04-23 | 2012-07-31 | Aker Subsea Inc. | Low profile internal tree cap |
-
2021
- 2021-12-03 CN CN202111468444.4A patent/CN114198045B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4405016A (en) * | 1980-12-18 | 1983-09-20 | Smith International, Inc. | Underwater Christmas tree cap and lockdown apparatus |
| CN102383757A (en) * | 2011-11-21 | 2012-03-21 | 江汉石油钻头股份有限公司 | Connection device for underwater production tree cup |
| CN103277065A (en) * | 2013-05-23 | 2013-09-04 | 宝鸡石油机械有限责任公司 | Underwater Christmas tree cap |
| CN203321407U (en) * | 2013-05-24 | 2013-12-04 | 重庆前卫海洋石油工程设备有限责任公司 | Christmas tree cap |
| CN203822239U (en) * | 2014-04-22 | 2014-09-10 | 美钻能源科技(上海)有限公司 | Internal Christmas tree cap for underwater horizontal Christmas tree |
| US9926760B1 (en) * | 2017-04-12 | 2018-03-27 | Onesubsea Ip Uk Limited | Subsea tree cap system deployable via remotely operated vehicle |
| CN107558940A (en) * | 2017-10-12 | 2018-01-09 | 中国海洋石油总公司 | A kind of light-duty well repairing device in deep water hydrocarbon field and method |
| CN107939328A (en) * | 2017-11-29 | 2018-04-20 | 重庆前卫海洋石油工程设备有限责任公司 | Underwater production tree cup running tool |
| CN108561094A (en) * | 2018-05-19 | 2018-09-21 | 山东科瑞机械制造有限公司 | A kind of subsea production tree decentralization installation testing tool |
| CN111894501A (en) * | 2020-08-19 | 2020-11-06 | 天津克睿特维科技发展有限公司 | Lowering and recycling device for packer in casing and construction process of lowering and recycling device |
| CN213269820U (en) * | 2020-09-15 | 2021-05-25 | 金湖县源景机械有限公司 | Tool for taking and delivering cap of subsea Christmas tree |
Non-Patent Citations (2)
| Title |
|---|
| 水下采油树下放工艺分析;王现锋;王良杰;张成富;沈琼;王若璇;张磊;;机械工程师(第01期);全文 * |
| 深水油气田水下采油树内树帽安装及要点分析;唐咸弟;杨乐乐;赵苏文;;科技视界(第19期);全文 * |
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| CN114198045A (en) | 2022-03-18 |
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