CN114198045A - Inner tree cap device for shallow underwater Christmas tree and using method thereof - Google Patents
Inner tree cap device for shallow underwater Christmas tree and using method thereof Download PDFInfo
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- CN114198045A CN114198045A CN202111468444.4A CN202111468444A CN114198045A CN 114198045 A CN114198045 A CN 114198045A CN 202111468444 A CN202111468444 A CN 202111468444A CN 114198045 A CN114198045 A CN 114198045A
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- inner tree
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- recovery
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- 241000191291 Abies alba Species 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004064 recycling Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims description 108
- 230000005284 excitation Effects 0.000 claims description 69
- 210000001503 joint Anatomy 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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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
Abstract
The invention discloses an inner tree cap device for a Christmas tree under shallow water and a using 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 cap to complete lowering and locking of the inner tree cap; the inner tree cap recycling tool is used for completing recycling of the inner tree cap. The invention provides an inner tree cap device for a shallow water underwater Christmas tree and a using method thereof.
Description
Technical Field
The invention relates to the technical field of petroleum drilling and production equipment, in particular to an inner tree cap device for a shallow underwater Christmas tree and a using method thereof.
Background
The underwater Christmas tree is widely applied to the exploitation process of an underwater oil-gas field and is an extremely important device in the drilling and completion and oil extraction processes. The inner tree cap of the Christmas tree is one of the main parts of the underwater Christmas tree, is arranged in the Christmas tree and is positioned at the upper part of the oil pipe hanger assembly, and is used for preventing rock debris, impurities and the like from falling into a gap between the pipe hanger and the tree body and bearing the pressure from the upper part and the lower part. 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, and aims to solve the problems that an underwater robot is poor in operability and relatively high in operation difficulty in a shallow water operation environment.
The invention provides an inner tree cap device for a Christmas tree under shallow water, 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 butted with the inner tree cap and used 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, 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 outward horizontal displacement of the inner tree cap locking ring; when the inner tree cap exciting ring moves downwards into the inner tree cap locking ring, the inner tree cap locking ring is opened, so that the inner tree cap locking ring locks the inner tree cap body.
Further, the vertical a plurality of pin spouts that are equipped with of upper end outer wall of interior tree cap body, and a plurality of pin spout hoop evenly distributed in on the upper end outer wall of interior tree cap body, the interior tree cap arouses the rampart of ring lower part and goes up to evenly be equipped with the cotter hole, if a pin wears respectively interior tree cap arouses the cotter hole of ring and stretches into to in the corresponding pin spout of interior tree cap body.
Furthermore, an opening is formed in the inner tree cap locking ring, and upper locking teeth and lower locking teeth are respectively arranged on the upper portion and the lower portion 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 recovery tool comprises an inner tree cap recovery tool mandrel and a recovery annular sleeve, and the recovery annular sleeve is sleeved at the lower part of the inner tree cap recovery 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; the outer wall of the bottom end of the downward-placing annular sleeve of the internal tree cap downward-placing tool is provided with an outer arc surface, the port at the top end of the internal tree cap excitation ring is provided with an inner arc surface, and the inner arc surface is inwards concave downwards to form a transition surface for connecting the outer wall and the inner wall of the internal tree cap excitation ring; when the inner tree cap recovery tool is butted with the inner tree cap, the internal thread of the inner tree cap body is matched with the external thread at the bottom end of the inner tree cap lowering tool to realize threaded connection; meanwhile, the inner arc surface of the end port of the top end of the inner tree cap excitation ring is matched with the outer arc 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 instrument dabber is transferred to tree cap in the rotation, the external screw thread with the internal thread drives interior tree cap and transfers instrument dabber and transfer the annular sleeve and move down in the complex, promotes interior tree cap arouses ring downstream to arouse tree cap in interior tree cap locking ring locking.
Furthermore, a gap is reserved between the downward placement annular sleeve and the inner tree cap downward placement tool mandrel, and the downward placement annular sleeve can rotate around the inner tree cap downward placement tool mandrel so as to guide and right the inner tree cap downward placement tool mandrel in the downward placement process.
Further, the inner tree cap recovery tool comprises an inner tree cap recovery tool mandrel and a recovery annular sleeve, and the recovery annular sleeve is sleeved at the lower part of the inner tree cap recovery tool mandrel; the outer wall of the bottom end of the recovery annular sleeve of the inner tree cap recovery tool is provided with an outer arc surface, the port at the top end of the inner tree cap excitation ring is provided with an inner arc surface, and the inner arc surface is inwards concave downwards to form a transition surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring; a plurality of clamping grooves are uniformly formed in the inner wall, close to the inner arc surface, of the inner tree cap excitation ring at intervals, the inner tree cap recovery tool comprises an inner tree cap recovery tool mandrel, a plurality of spring pins are uniformly arranged at the lower end of the inner tree cap recovery tool mandrel in the circumferential direction, and when the inner tree cap recovery tool is butted with the inner tree cap, the inner arc surface of the top end port of the inner tree cap excitation ring is matched with the outer arc 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 exerts vertical upward force on the clamping groove to pull the inner tree cap excitation ring to move upwards, so that the inner tree cap excitation ring is separated from the inner tree cap locking ring, the force for strutting the inner tree cap locking ring disappears, the inner tree cap locking ring realizes the unlocking of the inner tree cap, the vertical upward force is continuously exerted, the inner tree cap is lifted, and the recovery of the inner tree cap is completed.
Furthermore, 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, right and hang the inner tree cap recovery tool mandrel in the recovery process.
Furthermore, a dovetail groove is annularly 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 using method of the internal tree cap device, which adopts the internal tree cap device for the Christmas tree under shallow water and comprises the following steps:
lifting the inner tree cap lowering tool to the position above the inner tree cap, slowly lowering the inner tree cap lowering tool, matching the external thread at the bottom end of the mandrel of the inner tree cap lowering tool with the internal thread of the inner tree cap body, and rotating the inner tree cap lowering tool to complete 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 in butt joint with the drill rod, and the inner tree cap is conveyed into the inner cavity of the Christmas tree by using the inner tree cap lowering tool lowered by the drill rod;
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 lowering annular sleeve of the inner tree cap lowering tool to move downwards, so that the inner tree cap is pushed to move downwards, the pin is sheared, the inner tree cap excitation ring further moves downwards to prop open the inner tree cap locking ring, 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;
rotating the drill rod to drive the inner tree cap lowering tool mandrel to rotate, so that the external thread at the bottom end of the inner tree cap lowering tool mandrel is separated from the internal thread of the inner tree cap body, the inner tree cap lowering tool mandrel and the lowering annular sleeve move upwards, the inner tree cap lowering tool is removed, the drill rod is lifted, and the inner tree cap lowering tool is recovered;
butting a drill rod on the inner tree cap recovery tool; lowering the inner tree cap by using the drill rod to lower the inner tree cap recovery tool until the inner tree cap recovery tool is hung to the inner arc 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 propping open the inner tree cap locking ring disappears, the inner tree cap locking ring achieves 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 Christmas tree under shallow water 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; interior tree cap device can realize locking and release, utilizes the drilling rod to realize transferring, installation, locking, the recovery of interior tree cap under water, reduces underwater operation, through send into the excitation of tree cap lock ring in the drilling rod completion, the interior tree cap break-off hand of instrument under, through lifting the recovery of tree cap in the drilling rod completion promptly, avoids using engineering equipment such as underwater robot to accomplish underwater operation, reduces the operation degree of difficulty. The invention provides an inner tree cap device for a shallow water underwater Christmas tree and a using method thereof.
Drawings
Fig. 1 is an external structural schematic view of an inner tree cap provided in embodiment 1 of the present invention;
fig. 2 is a schematic view of an internal structure of an internal tree cap provided in embodiment 1 of the present invention;
fig. 3 is a partially enlarged view of a joint of the inner tree cap body, the inner tree cap locking ring and the inner tree cap excitation ring provided in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of an inner tree cap locking ring provided in embodiment 1 of the present invention.
FIG. 5 is a top view of an inner tree cap provided in example 1 of the present invention;
fig. 6 is an external structural schematic view of an internal tree cap lowering tool provided in embodiment 1 of the present invention;
fig. 7 is a schematic view of the internal structure of the internal tree cap lowering tool provided in embodiment 1 of the present invention;
FIG. 8 is a schematic external structural view of an internal tree cap recycling tool provided in embodiment 1 of the present invention;
fig. 9 is a schematic view of an internal structure of the internal tree cap recycling tool provided in embodiment 1 of the present invention.
Description of reference numerals:
1-inner tree cap, 11-inner tree cap body, 111-transverse baffle, 112-internal thread, 113-dovetail groove; 12-inner tree cap locking ring, 120-opening, 121-upper locking tooth, 122-lower locking tooth; 13-inner tree cap excitation ring, 131-inner arc surface, 132-clamping groove; 14-pin, 140-pin runner;
2-an inner tree cap lowering tool, 21-an inner tree cap lowering tool mandrel, 22-a lowering annular sleeve, 23-a lowering drill rod thread, 24-an external thread and 25-an external arc surface;
3-inner tree cap recovery tool, 31-inner tree cap recovery tool mandrel, 32-recovery annular sleeve, 33-recovery drill rod thread and 34-spring pin.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1: internal tree cap device for shallow underwater Christmas tree
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 and used for lowering and locking the inner tree cap 1; the inner tree cap recovery tool 3 is in butt joint with the inner tree cap 1 and is used for recovering the inner tree cap 1.
In particular, with reference to fig. 1 and 2, 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,
interior tree cap arouses the lower part of ring 13 and the upper end of interior tree cap body 11 and passes through pin 14 fixed connection, specifically, refer to fig. 3, the vertical a plurality of pin spout 140 that are equipped with of upper end outer wall of interior tree cap body 11, and a plurality of pin spout 140 hoop evenly distributed are on the upper end outer wall of interior tree cap body 11, the ring wall of interior tree cap arouses ring 13 lower part is gone up to the ring and is evenly equipped with the pin hole, if a plurality of pin 14 wear interior tree cap arouse ring 13 the pin hole and stretch into to interior tree cap body 11 in the pin spout 140 of correspondence respectively, wherein interior tree cap arouses ring 13 can take place to reciprocate on interior tree cap body 11, but can not rotate.
The inner tree cap locking ring 12 is sleeved outside the joint of the inner tree cap locking ring 12 and the inner tree cap body 11 and used for limiting the outward horizontal displacement of the inner tree cap locking ring 12.
In order to prevent the fluid in the inner tree cap body 11 from flowing up and down, specifically, the inner tree cap body 11 is a hollow cylinder, and a transverse baffle 111 is arranged in the middle of the cylinder.
In order to isolate the upper and lower annular pressure outside the inner tree cap device, a dovetail groove 113 is annularly 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 inner tree cap excitation ring 13 from falling off the inner tree cap body 11, in a specific embodiment, referring to fig. 4, an opening 120 is provided on the inner tree cap locking ring 12, and upper and lower portions of the outer wall of the inner tree cap locking ring 12 are respectively provided with upper and lower locking teeth 121 and 122 for preventing the inner tree cap excitation ring 13 from falling off the inner tree cap body 11 by moving upward or downward.
When the inner tree cap excitation ring 13 moves down into the inner tree cap locking ring 12, the inner tree cap locking ring 12 is spread open, so that the inner tree cap locking ring 12 locks the inner tree cap body 11, and further locks the Christmas tree cavity in the inner tree cap body 11.
Referring to fig. 6 to 7, the inner tree cap lowering tool 2 comprises an inner tree cap lowering tool mandrel 21 and a lowering annular sleeve 22, wherein a drilling fluid passage is arranged inside the inner tree cap lowering tool mandrel 21, and the lowering annular sleeve 22 is sleeved on the middle lower part of the inner tree cap lowering tool mandrel 21.
A lower drill rod thread 23 is arranged on the inner wall of the top end of the mandrel 21 of the inner tree cap lower tool and is used for butt joint of a drill rod so as to finish the lower placement of the inner tree cap 1 through the inner tree cap lower tool 2;
the outer wall of the bottom end of the mandrel 21 of the internal tree cap lowering tool is provided with an external thread 24 which is matched with an internal thread 112 at the upper end of the internal tree cap body 11 to realize butt joint with the internal tree cap 1 and complete lowering of the internal tree cap 1. With reference to fig. 2 and 3, specifically, the upper end of the inner tree cap body 11 is provided with an internal thread 112, the outer wall of the bottom end of the mandrel 21 of the inner tree cap lowering tool is provided with an external thread 24, and when the inner tree cap recycling tool 3 is butted against the inner tree cap 1, the internal thread 112 of the inner tree cap body 11 is matched with the external thread 24 of the bottom end of the inner tree cap lowering tool 2 to realize threaded connection.
The bottom outer wall of the lowering annular sleeve 22 of the inner tree cap lowering tool 2 is provided with an outer arc surface 25 for matching with the inner arc surface 131 of the top end port of the inner tree cap exciting ring 13, which is favorable for realizing butt joint with the inner tree cap 1 to complete lowering of the inner tree cap 1. With reference to fig. 1, 2 and 5, the top end port of the inner tree cap excitation ring 13 is provided with an inner arc surface 131, and the inner arc surface 131 is recessed inwards to form a transition surface connecting the outer wall and the inner wall of the inner tree cap excitation ring 13; preferably, intrados 131 is angled at 45 ° to the outer or inner wall of inner tree cap energizing ring 13. When the inner tree cap lowering tool 2 is butted with the inner tree cap 1, the inner arc surface 131 of the top end port of the inner tree cap exciting ring 13 is matched with the outer arc 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 interior tree cap 1 to be placed through the interior tree cap placing tool 2, when the interior tree cap placing tool mandrel 21 rotates, the external thread 24 and the internal thread 112 drive the interior tree cap placing tool mandrel 21 and the placing annular sleeve 22 to move downwards in cooperation, the interior tree cap excitation ring 13 is pushed to move downwards, and therefore the interior tree cap locking ring 12 is excited to lock the interior tree cap 1.
Wherein, transfer and leave the clearance between annular sleeve 22 and interior tree cap transfer instrument dabber 21, transfer annular sleeve 22 and can transfer instrument dabber 21 rotation around interior tree cap to accomplish the direction of transferring in-process and rightting to interior tree cap transfer instrument dabber 21.
Referring to fig. 8 to 9, the inner tree cap recovery tool 3 includes an inner tree cap recovery tool mandrel 31 and a recovery annular sleeve 32, a drilling fluid passage is provided inside the inner tree cap recovery tool mandrel 31, and the recovery annular sleeve 32 is sleeved on the lower portion of the inner tree cap recovery tool mandrel 31.
The inner wall of the top end of the mandrel 31 of the inner tree cap recovery tool is provided with a recovery drill rod thread 33 which is used 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 tree cap recycling tool mandrel 31 is circumferentially and uniformly provided with a plurality of spring pins 34, in a specific embodiment, the number of the spring pins 34 is four, and the four spring pins 34 are uniformly distributed on the shaft wall of the inner tree cap recycling tool mandrel 31 below the recycling annular sleeve 32.
The outer wall of the bottom end of the recycling annular sleeve 32 of the inner tree cap recycling tool 3 is provided with an outer arc surface 25 which is matched with the inner arc surface 131 of the top end port of the inner tree cap exciting ring 13, and the inner tree cap recycling tool is favorable for realizing butt joint with the inner tree cap 1 to complete recycling of the inner tree cap 1. With reference to fig. 1, 2 and 5, the top end port of the inner tree cap excitation ring 13 is provided with an inner arc surface 131, and the inner arc surface 131 is recessed inwards to form a transition surface connecting the outer wall and the inner wall of the inner tree cap excitation ring 13; preferably, intrados 131 is angled at 45 ° to the outer or inner wall of inner tree cap energizing ring 13. When the inner tree cap recovery tool 3 is butted with the inner tree cap 1, the inner arc surface 131 of the top end port of the inner tree cap excitation ring 13 is matched with the outer arc 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 arc surface 131 at intervals, a plurality of spring pins 34 are uniformly arranged on the lower end ring of the mandrel 31 of the inner tree cap recovery tool, and when the inner tree cap recovery tool 3 is butted with the inner tree cap 1, the spring pins 34 of the inner tree cap recovery tool 3 are respectively clamped on the 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 exerts a vertical upward force on the clamping groove 132 to pull the inner tree cap excitation ring 13 to move upwards, so that the inner tree cap excitation ring 13 is separated from the inner tree cap locking ring 12, the force for opening the inner tree cap locking ring 12 disappears, the inner tree cap locking ring 12 realizes the unlocking of the inner tree cap 1, the vertical upward force is continuously exerted, the inner tree cap 1 is lifted, and the recovery of the inner tree cap 1 is completed.
Wherein, leave the clearance between retrieving the annular sleeve 32 and the interior tree cap and retrieve instrument dabber 31, retrieve the annular sleeve 32 and can retrieve instrument dabber 31 around interior tree cap and rotate to accomplish the direction of retrieving the in-process to the interior tree cap and retrieve instrument dabber 31, right, sit and hang.
Example 2: application method of inner tree cap device
step S1: the inner tree cap lowering tool 2 is butted with the inner tree cap 1
Lifting the inner tree cap lowering tool 2 to the upper part of the inner tree cap 1, slowly lowering to complete 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;
step S2: the inner tree cap 1 is placed into the inner cavity of the Christmas tree by a drill rod feeding and inner tree cap lowering tool 2
The top end of the inner tree cap lowering tool 2 is in butt joint with a drill rod, the inner tree cap lowering tool 2 is lowered by the drill rod, and the inner tree cap 1 is conveyed into the inner cavity of the Christmas tree;
step S3: locking inner tree cap 1
Rotating the drill rod to drive the inner tree cap lowering tool mandrel 21 to rotate, further matching the external thread 24 at the bottom end of the inner tree cap lowering tool mandrel 21 with the internal thread 112 of the inner tree cap body 11, moving the inner tree cap lowering tool 2 downwards to drive the lowering 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, so that the inner tree cap locking ring 12 is opened, 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 for putting down tree cap in releasing hand 2
Rotating the drill rod to drive the inner tree cap lowering tool mandrel 21 to rotate, so that the external thread 24 at the bottom end of the inner tree cap lowering tool mandrel 21 is separated from the internal thread 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 removed from the hand, the drill rod is lifted, and the inner tree cap lowering tool 2 is recovered;
step S5: the inner tree cap recovery tool 3 is put down
Butting a drill rod on the internal tree cap recovery tool 3; lowering the inner tree cap recovery tool 3 by using a drill rod, and lowering the inner tree cap 1 until the inner tree cap recovery tool 3 is hung to the inner arc surface 131 of the inner tree cap excitation ring 13; releasing the drill rod;
step S6: recovering the inner tree cap 1
The drill rod is rotated to drive 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 to confirm 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, vertical upward force is continuously applied to the drill rod and the inner tree cap recovery tool 3 to drive the inner tree cap excitation ring 13 to move upwards, the inner tree cap excitation ring 13 is separated from the inner tree cap locking ring 12, the force for opening 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 to lift the inner tree cap 1, and recovery of the inner tree cap 1 is completed.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. An inner tree cap device for a Christmas tree under shallow water is characterized by comprising an inner tree cap (1), an inner tree cap lowering tool (2) and an inner tree cap recycling tool (3),
the inner tree cap lowering tool (2) is butted with the inner tree cap (1) and used for lowering and locking the inner tree cap (1);
the inner tree cap recovery tool (3) is in butt joint with the inner tree cap (1) and used for recovering the inner tree cap (1).
2. The internal tree cap arrangement of claim 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),
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), wherein 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 locking ring (12) and the inner tree cap body (11) and used for limiting outward horizontal displacement of the inner tree cap locking ring (12);
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 unfolded, so that the inner tree cap locking ring (12) locks the inner tree cap body (11).
3. The internal tree cap arrangement of claim 2,
the vertical a plurality of pin spout (140) that are equipped with of upper end outer wall of interior tree cap body (11), and a plurality of pin spout (140) hoop evenly distributed in on the upper end outer wall of interior tree cap body (11), the annular wall of interior tree cap arouse ring (13) lower part is gone up to the annular wall and is evenly equipped with the pin hole, if a pin (14) are worn respectively the pin hole of interior tree cap arouse ring (13) and stretch into to in the pin spout (140) of the correspondence of interior tree cap body (11).
4. The internal tree cap arrangement of claim 2,
an opening (120) is formed in the inner tree cap locking ring (12), and upper locking teeth (121) and lower locking teeth (122) are respectively arranged on the upper portion and the lower portion of the outer wall of the inner tree cap locking ring (12) and 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).
5. The internal tree cap arrangement of claim 2,
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 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 mandrel (21) of the inner tree cap lowering tool;
an outer arc surface (25) is arranged on the outer wall of the bottom end of a downward-placing annular sleeve (22) of the inner tree cap downward-placing tool (2), an inner arc surface (131) is arranged at the top end port of the inner tree cap excitation ring (13), and the inner arc surface (131) is inwards recessed to form a transition surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring (13);
when the inner tree cap recovery tool (3) is butted with the inner tree cap (1), the internal thread (112) of the inner tree cap body (11) is matched with the external thread (24) at the bottom end of the inner tree cap lowering tool (2) to realize threaded connection; meanwhile, an inner arc surface (131) of the top end port of the inner tree cap excitation ring (13) is matched with an outer arc 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 internal tree cap lowering tool mandrel (21) is rotated, the external thread (24) and the internal thread (112) are matched, the internal tree cap lowering tool mandrel (21) and the lowering annular sleeve (22) are driven to move downwards, the internal tree cap excitation ring (13) is pushed to move downwards, and the internal tree cap locking ring (12) is excited to lock the internal tree cap (1).
6. The internal tree cap arrangement of claim 5,
a gap is reserved between the downward placement annular sleeve (22) and the inner tree cap downward placement tool mandrel (21), and the downward placement annular sleeve (22) can rotate around the inner tree cap downward placement tool mandrel (21) to guide and right the inner tree cap downward placement tool mandrel (21) in the downward placement process.
7. The internal tree cap arrangement of claim 5,
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 arc surface (25) is arranged on the outer wall of the bottom end of a recycling annular sleeve (32) of the inner tree cap recycling tool (3), an inner arc surface (131) is arranged at the top end port of the inner tree cap excitation ring (13), and the inner arc surface (131) is inwards concave downwards to form a transition surface for connecting the outer wall and the inner wall of the inner tree cap excitation ring (13);
a plurality of clamping grooves (132) are uniformly arranged on the inner wall of the inner tree cap exciting ring (13) close to the inner arc surface (131) at intervals, the inner tree cap recovery tool (3) comprises an inner tree cap recovery tool mandrel (31), a plurality of spring pins (34) are uniformly arranged in the circumferential direction of the lower end of the inner tree cap recovery tool mandrel (31),
when the inner tree cap recovery tool (3) is butted with the inner tree cap (1), the inner arc surface (131) of the top end port of the inner tree cap excitation ring (13) is matched with the outer arc 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); meanwhile, 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) exerts a vertical upward force on 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 opening the inner tree cap locking ring (12) disappears, the inner tree cap locking ring (12) unlocks the inner tree cap (1), the vertical upward force is continuously exerted, the inner tree cap (1) is lifted, and the recovery of the inner tree cap (1) is completed.
8. The internal tree cap arrangement of claim 7,
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, right and sit the inner tree cap recovery tool mandrel (31) in the recovery process.
9. The internal tree cap arrangement of claim 2,
the middle part of the outer wall of the inner tree cap body (11) is annularly provided with a dovetail groove (113), and a sealing ring is arranged on the dovetail groove (113).
10. A method of using an internal tree cap device for a tree in shallow water, as claimed in claim 7, comprising:
lifting the inner tree cap lowering tool (2) to the position above the inner tree cap (1), slowly lowering the inner tree cap lowering tool to complete 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 in butt joint 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 lowering inner tree cap lowering tool (2);
the rotary drill rod drives an inner tree cap lowering tool mandrel (21) to rotate, an external thread (24) at the bottom end of the inner tree cap lowering tool mandrel (21) is further matched with an internal thread (112) of an inner tree cap body (11), the inner tree cap lowering tool (2) moves downwards, a lowering annular sleeve (22) of the inner tree cap lowering tool (2) is driven to move downwards, an inner tree cap excitation ring (13) is pushed to move downwards, a pin (14) is sheared, the inner tree cap excitation ring (13) further moves downwards, an inner tree cap locking ring (12) is propped open, and an inner tree cap (1) is locked to an inner cavity of a Christmas tree; the drill rod is lifted, and the locking of the inner tree cap (1) is verified and ensured;
rotating the drill rod to drive the inner tree cap lowering tool mandrel (21) to rotate, so that the external thread (24) at the bottom end of the inner tree cap lowering tool mandrel (21) is separated from the internal thread (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 removed from the hand, the drill rod is lifted, and the inner tree cap lowering tool (2) is recovered;
butting a drill rod on the inner tree cap recovery tool (3); the inner tree cap recovery tool (3) is lowered by using the drill rod, the inner tree cap (1) is lowered until the inner tree cap recovery tool (3) is hung to the inner arc 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, 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, the 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 opening the inner tree cap locking ring (12) disappears, the inner tree cap locking ring (12) achieves 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.
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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| CN114198045A true CN114198045A (en) | 2022-03-18 |
| CN114198045B CN114198045B (en) | 2023-10-31 |
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|---|---|
| CN114198045B (en) | 2023-10-31 |
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