CN109899015B - Subsea tubing hanger integrated with built-in gate valve and drive structure - Google Patents
Subsea tubing hanger integrated with built-in gate valve and drive structure Download PDFInfo
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- CN109899015B CN109899015B CN201910152428.0A CN201910152428A CN109899015B CN 109899015 B CN109899015 B CN 109899015B CN 201910152428 A CN201910152428 A CN 201910152428A CN 109899015 B CN109899015 B CN 109899015B
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Abstract
本发明公开了集成有内置闸板阀及驱动结构的水下油管悬挂器，包括悬挂器本体，悬挂器本体在其中心轴线位置开设有空腔，悬挂器本体顶端设置有紧急回收机构，悬挂器本体底端连接有油管，悬挂器本体外壁设置有卡环、高度调节环，悬挂器本体的空腔外壁设置有电贯穿孔和多个液贯穿孔，悬挂器本体内壁设置有环空通道，环空通道包括水平环空孔Ⅰ、水平环空孔Ⅱ、竖直环空孔Ⅰ和竖直环空孔Ⅱ，竖直环空孔Ⅱ与悬挂器本体底部环空空间连通，水平环空孔Ⅰ设置有闸板阀。本发明的闸板阀通过液压控制，启闭快速简便，同时满足高度调节和紧急回收功能，能够更好地适应海洋油气开发工况，满足水下设备的高可靠性要求。
The invention discloses an underwater oil pipe hanger integrated with a built-in gate valve and a driving structure, including a hanger body, a cavity is opened on the center axis of the hanger body, an emergency recovery mechanism is arranged at the top of the hanger body, and the hanger body is provided with an emergency recovery mechanism. The bottom end of the body is connected with an oil pipe, the outer wall of the hanger body is provided with a snap ring and a height adjustment ring, the outer wall of the cavity of the hanger body is provided with electrical through holes and a plurality of liquid through holes, the inner wall of the hanger body is provided with an annular channel, the ring The empty channel includes a horizontal annular hole I, a horizontal annular hole II, a vertical annular hole I and a vertical annular hole II. The vertical annular hole II is communicated with the annular space at the bottom of the hanger body, and the horizontal annular hole I A gate valve is provided. The gate valve of the invention is hydraulically controlled, opens and closes quickly and easily, satisfies the functions of height adjustment and emergency recovery at the same time, can better adapt to marine oil and gas development conditions, and meets the high reliability requirements of underwater equipment.
Description
Technical Field
The invention belongs to the technical field of marine oil and gas drilling equipment, and relates to an underwater oil pipe hanger integrated with a built-in gate valve and a driving structure.
Background
The underwater oil pipe hanger is mainly used for hanging the weight of an oil pipe, sealing the drift diameter of a wellhead or a Christmas tree, providing a channel for oil and gas production and annulus, and providing interfaces and channels for electric control, hydraulic pressure and chemical agent injection. The oil pipe hanger of the underwater vertical Christmas tree is arranged in a wellhead head, because the oil pipe hanger needs to seal production and annular channels when being arranged, the traditional annular packer type structure needs to sequentially install and recover the plug, thereby increasing the operation time and the labor intensity, meanwhile, because the oil pipe hanger of the vertical Christmas tree is generally arranged on the innermost casing head, the oil pipe hanger is greatly influenced by the well cementation quality, and the oil pipe hanger needs to have higher matching precision with the underwater Christmas tree, thereby needing to have the height adjusting function. In the process of offshore operation, if control hydraulic pressure fails due to accidents, the oil pipe hanger is required to be recovered emergently.
Disclosure of Invention
The invention aims to provide an underwater oil pipe hanger integrated with a built-in gate valve and a driving structure, which can simultaneously meet the functions of height adjustment and emergency recovery.
The invention adopts the technical scheme that an underwater oil pipe hanger integrated with a built-in gate valve and a driving structure comprises a hanger body, wherein a cavity is formed in the center axis position of the hanger body, an emergency recovery mechanism is arranged at the top end of the hanger body, an oil pipe is connected to the bottom end of the hanger body, a snap ring is arranged on the upper portion of the outer wall of the hanger body, a height adjusting ring is arranged on the lower portion of the outer wall of the hanger body, an electric through hole and a plurality of liquid through holes are formed in the outer wall of the cavity of the hanger body and uniformly distributed on the same circumference, an upper electric connector and a lower electric connector are respectively and hermetically connected to the top end and the bottom end of the electric through hole, an upper hydraulic connector and a lower hydraulic connector are respectively and hermetically connected to the top end and the bottom end of the liquid through hole, an annular, Horizontal annular cavity II, vertical annular cavity I and vertical annular cavity II, wherein horizontal annular cavity I communicates in horizontal annular cavity II, and horizontal annular cavity I, horizontal annular cavity II communicate respectively with it vertically annular cavity I, vertical annular cavity II, and the direct hanger body top in vertical annular cavity I communicates with hanger body bottom annular space, and horizontal annular cavity I is provided with the flashboard valve.
The present invention is also characterized in that,
the cavity wall of hanger body is provided with cascaded narrowed sealed profile and the wire rope stopper installation profile of conical surface type respectively, and sealed profile is located cavity wall top, and wire rope stopper installation profile is located cavity wall middle part.
The hanger body outer wall bottom has set gradually lip metal seal and sealed II from bottom to top, and the lip metal seal is kept off the ring by the screw with hanger body threaded connection's screw and is supported spacingly, and the circumference that the screw kept off the ring evenly is provided with a plurality of anti-rotating screws I, and altitude mixture control ring's circumference evenly is provided with a plurality of anti-rotating screws II, and the altitude mixture control ring bottom sets up to the seat and puts the inclined plane.
Urgent recovery mechanism includes through threaded connection at the promotion ring on hanger body top circular bead, promotes the ring overcoat and is equipped with and compresses tightly the cover, compresses tightly cover bottom inner wall and the laminating of hanger body outer wall, compresses tightly the cover and is located the snap ring top, compresses tightly to sheathe in and has seted up the rectangular hole, and the mounting groove has been seted up to the hanger body, is provided with the dog in the rectangular hole, and the dog is fixed in the mounting groove through set screw I.
Be provided with sealed I between hoisting ring and the hanger body, hoisting ring, pressing sleeve inner wall are provided with locking profile I, locking profile II respectively, and pressing sleeve outer wall bottom is provided with the conical surface of impressing, and the snap ring inner wall is provided with the internal diameter conical surface with impressing conical surface complex, and the snap ring is C type snap ring, and pressing sleeve inner wall is provided with bulge loop I, and the hoisting ring outer wall is provided with bulge loop II, and bulge loop I and bulge loop II can the intercrossing lock.
The outer wall of hanger body and promotion ring contact part inlays and is equipped with prevents changeing the guide block, prevents changeing the guide block and passes through set screw II and this body coupling of hanger, prevents changeing the guide block outside and promotes the ring contact, prevents changeing the guide block and is provided with rectangular channel II with the lateral wall that promotes the ring contact, promotes the corresponding position of ring inner wall rectangular channel II and is provided with rectangular channel I, rectangular channel II and I intercrossing lock of rectangular channel.
The gate valve is including seting up the flashboard chamber at hanger body lateral wall, the flashboard chamber is by fixing the shutoff of the valve pocket apron on the hanger body through set screw III, horizontal ring vacancy is I passes the flashboard chamber, be provided with the flashboard in the flashboard chamber, the flashboard is perpendicular with the axis of horizontal ring vacancy I, the wide face both sides of flashboard all are provided with the disk seat, the disk seat hole has all been seted up to the disk seat, flashboard leptoprosopy both sides all are provided with bow-shaped gib block, the flashboard is provided with the flashboard hole, the flashboard hole in proper order with the disk seat hole, I intercommunication in horizontal ring vacancy, the.
A seal VIII and a seal IX are arranged between the valve seat and the hanger body, and a seal III is arranged between the valve cavity cover plate and the hanger body.
Actuating mechanism includes the valve rod that bottom and flashboard are connected, the valve rod top is connected with drive piston through circular nut, hydraulic pressure chamber and spring chamber have been seted up respectively to hanger body lateral wall, the valve rod is arranged in the spring chamber, spring chamber bottom is provided with the sealed ring that keeps off through threaded connection with the hanger body, the valve rod outside is provided with compression spring, compression spring is located to seal and keeps off between ring and the drive piston, be provided with the hydraulic pressure chamber in the hydraulic pressure chamber and press the cap, the hydraulic pressure chamber is pressed the cap and is connected with hydraulic pressure joint through its centre bore screw thread.
The hydraulic cavity pressure cap is in threaded connection with the hanger body and is provided with a seal VII, a seal VI is arranged between the driving piston and the hanger body, a seal V is arranged between the driving piston and the valve rod, a seal IV is arranged between the bottom of the valve rod and the hanger body, and the seal IV is compressed by a seal retaining ring.
The invention has the beneficial effects that:
the underwater oil pipe hanger is integrated with the built-in gate valve and the driving structure, has a compact structure, and effectively reduces the weight of underwater equipment; through the hydraulic control of the gate valve, the opening and closing are quick, simple and convenient, and the functions of height adjustment and emergency recovery are simultaneously met; the device can better adapt to the ocean oil and gas development working condition and meet the high reliability requirement of underwater equipment.
Drawings
FIG. 1 is a schematic structural view of an underwater tubing hanger of the present invention incorporating a built-in gate valve and drive structure;
FIG. 2 is a top view of the subsea tubing hanger of the present invention integrated with a built-in gate valve and drive structure;
FIG. 3 is a partial cross-sectional view A-A of the locked state of the subsea tubing hanger of the present invention incorporating a built-in gate valve and drive structure;
FIG. 4 is a C-C partial cross-sectional view of the subsea tubing hanger of the present invention integrated with a built-in gate valve and drive structure;
FIG. 5 is a sectional view A-A of the unlocked position of the subsea tubing hanger of the present invention incorporating a built-in gate valve and drive structure;
FIG. 6 is an enlarged view of a convex ring anti-loosening structure of the underwater oil pipe hanger of the present invention integrated with a built-in gate valve and a driving structure;
FIG. 7 is an enlarged view of an anti-rotation guide block and a rectangular groove of the underwater oil pipe hanger of the present invention integrated with a built-in gate valve and a driving structure;
FIG. 8 is a partial cross-sectional view B-B of the subsea tubing hanger of the present invention integrated with a built-in gate valve and drive structure;
FIG. 9 is a D-D partial cross-sectional view of the subsea tubing hanger of the present invention integrated with a built-in gate valve and drive structure;
fig. 10 is an installation view of the underwater oil pipe hanger and the wire rope plug integrated with the built-in gate valve and the driving structure according to the present invention.
In the figure, 1, a pressing sleeve, 2, a lifting ring, 3, an upper electric connector, 4, a seal I, 5, a C-shaped clamping ring, 6, a hanger body, 7, a height adjusting ring, 8, a seal II, 9, a lip-shaped metal seal, 10, a thread baffle ring, 11, an oil pipe string, 12, a hydraulic connector, 13, a lower hydraulic connector, 14, anti-rotation screws I, 15, anti-rotation screws II, 16, a steel wire plug mounting profile, 17, a cavity, 18, a through hole, 19, a seal profile, 20, an upper hydraulic connector, 21, a locking profile I, 22, a locking profile II, 23, a hydraulic cavity pressing cap, 24, a round nut, 25, a driving piston, 26, a valve rod, 27, a compression spring, 28, a seal baffle ring, 29, a seal III, 30, a valve cavity cover plate, 31, a flashboard, 32, a guide strip, 33, a flashboard cavity, 34, a flashboard hole, 35, a seal IV, 36, a spring cavity, 37, a seal V, 38. the hydraulic pressure sealing device comprises a seal VI, a hydraulic cavity, a seal VII, a stop block 41, a fixing screw I, a fixing screw 43, a vertical annular hole I, a valve seat 44, a seal VIII, a seal IX, a seal 47, a horizontal annular hole I, a vertical annular hole II, a vertical annular hole 49, a horizontal annular hole II, a horizontal annular hole 50, a valve seat hole 51, a fixing screw II, a fixing screw 52, an anti-rotation guide block 53, a rectangular groove I, a rectangular groove 54, a rectangular groove II, a convex ring I, a convex ring 56, a convex ring II, a fixing screw 57, a mounting groove 58, a rectangular hole 59, a lower electric connector 60, a wire rope plug 61, a wire rope plug 62, a seat inclined plane 63, a press-in conical surface 64 and an inner diameter conical surface.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to an underwater oil pipe hanger integrated with a built-in gate valve and a driving structure, which comprises a hanger body 6, wherein the hanger body 6 is provided with a cavity 17 at the central axis position, the top end of the hanger body 6 is provided with an emergency recovery mechanism, the bottom end of the hanger body 6 is connected with an oil pipe 11, the upper part of the outer wall of the hanger body 6 is provided with a snap ring 5, the lower part of the outer wall of the hanger body 6 is provided with a height adjusting ring 7, the outer wall of the cavity 17 of the hanger body 6 is provided with an electric through hole and a plurality of liquid through holes 18, the electric through hole and the plurality of liquid through holes 18 are uniformly distributed on the same circumference, the top end and the bottom end of the electric through hole are respectively and hermetically connected with an upper electric connector 3 and a lower electric connector 60, the top end and the bottom end of the liquid through hole 18 are, the annular channel comprises a horizontal annular hole I, a horizontal annular hole II, a vertical annular hole I and a vertical annular hole II, wherein the horizontal annular hole I47 is communicated with the horizontal annular hole II 49, the horizontal annular hole I47 and the horizontal annular hole II 49 are respectively communicated with the vertical annular hole I43 and the vertical annular hole II 48 which are perpendicular to the horizontal annular hole I43, the vertical annular hole I43 is communicated with the top of the hanger body 6, the vertical annular hole II is communicated with the annular space at the bottom of the hanger body, and the horizontal annular hole I47 is provided with a gate valve.
The wall of the cavity 17 of the hanger body 6 is respectively provided with a stepped narrowing sealing profile 19 and a conical wire rope plug mounting profile 16, the sealing profile 19 is positioned at the top end of the wall of the cavity 17, and the wire rope plug mounting profile 16 is positioned in the middle of the wall of the cavity 17.
The bottom of the outer wall of the hanger body 6 is sequentially provided with a lip-shaped metal seal 9 and a seal II 8 from bottom to top, the lip-shaped metal seal 9 is supported and limited by a thread retaining ring 10 in threaded connection with the hanger body 6, a plurality of anti-rotation screws I14 are uniformly arranged in the circumferential direction of the thread retaining ring 10, a plurality of anti-rotation screws II 15 are uniformly arranged in the circumferential direction of the height adjusting ring 7, and the bottom end of the height adjusting ring 7 is arranged to be a seat placing inclined surface 62.
As shown in fig. 3, the emergency recovery mechanism comprises a lifting ring 2 which is connected to a shoulder on the top of a hanger body 6 through a thread, a pressing sleeve 1 is sleeved outside the lifting ring 2, the inner wall of the bottom of the pressing sleeve 1 is attached to the outer wall of the hanger body 6, the pressing sleeve 1 is located above a clamping ring 5, as shown in fig. 4, a rectangular hole 59 is formed in the pressing sleeve 1, a mounting groove 58 is formed in the hanger body 6, a stop block 41 is arranged in the rectangular hole 59, the stop block 41 is fixed in the mounting groove 58 through a fixing screw i 42, and when the pressing sleeve 1 is lifted, the stop block 41 blocks the lifting sleeve, so that emergency mechanical recovery of the invention is realized.
As shown in fig. 5, be provided with sealed I4 between hoisting ring 2 and the hanger body 6, hoisting ring 2, it is provided with locking profile I21 respectively to compress tightly 1 inner wall of cover, locking profile II 22, it is provided with the conical surface 63 of impressing to compress tightly 1 outer wall bottom of cover, the 5 inner walls of snap ring are provided with the internal diameter conical surface 64 with the conical surface 63 complex of impressing, snap ring 5 is C type snap ring, as shown in fig. 6, it is provided with bulge loop I55 to compress tightly 1 inner wall, hoisting ring 2 outer wall is provided with bulge loop II 56, bulge loop I55 and II 56 of bulge loop can the intercrossing lock, bulge loop I55 and II 56 of bulge loop prevent to compress tightly 1 unexpected unblock and.
As shown in fig. 7, the outer wall of the contact part of the hanger body 6 and the lifting ring 2 is embedded with an anti-rotation guide block 52, the anti-rotation guide block 52 is connected with the hanger body 6 through a fixing screw ii 51, the outer side of the anti-rotation guide block 52 is in contact with the lifting ring 2, the outer side wall of the anti-rotation guide block 52 in contact with the lifting ring 2 is provided with a rectangular groove ii 54, the corresponding position of the rectangular groove ii 54 on the inner wall of the lifting ring 2 is provided with a rectangular groove i 53, the rectangular groove ii 54 is mutually crossed and buckled with the rectangular groove i 53, and the rectangular groove ii 54 and the rectangular groove i 53 prevent the lifting ring 2 from loosening and loosening the thread of the hanger body.
As shown in fig. 8, the gate valve includes a gate cavity 33 formed in the side wall of the hanger body 6, the gate cavity 33 is blocked by a valve cavity cover plate 30 fixed on the hanger body 6 through a fixing screw iii 57, a seal iii 29 is provided between the valve cavity cover plate 30 and the hanger body 6, as shown in fig. 9, a horizontal ring empty hole i 47 penetrates through the gate cavity 33, a gate 31 is provided in the gate cavity 33, the gate 31 is perpendicular to the axis of the horizontal ring empty hole i 47, valve seats 44 are provided on both sides of the wide surface of the gate 31, a seal viii 45 and a seal ix 46 are provided between the valve seats 44 and the hanger body 6, valve seats 50 are provided on the valve seats 44, arcuate guide strips 32 are provided on both sides of the narrow surface of the gate 31, the gate 31 is provided with a gate hole 34, the gate hole 34 is sequentially communicated with the valve seats 50 and the horizontal ring empty hole i 47, and the gate 31 is connected.
The driving mechanism comprises a valve rod 26 with the bottom end connected with the gate plate 31, the top end of the valve rod 26 is connected with a driving piston 25 through a round nut 24, a hydraulic cavity 39 and a spring cavity 36 are respectively formed in the side wall of the hanger body 6, the valve rod 26 is located in the spring cavity 36, a sealing retaining ring 28 connected with the hanger body 6 through threads is arranged at the bottom of the spring cavity 36, a compression spring 27 is arranged on the outer side of the valve rod 26, the compression spring 27 is located between the sealing retaining ring 28 and the driving piston 25, a hydraulic cavity pressure cap 23 is arranged in the hydraulic cavity 39, and the hydraulic cavity pressure cap 23 is connected with the hydraulic connector 12 through a center hole thread.
The hydraulic cavity pressure cap 23 is in threaded connection with the hanger body 6 and is provided with a seal VII 40, a seal VI 38 is arranged between the driving piston 25 and the hanger body 6, a seal V37 is arranged between the driving piston 25 and the valve rod 26, a seal IV 35 is arranged between the bottom of the valve rod 26 and the hanger body 6, and the seal IV 35 is compressed by the seal retaining ring 28.
The invention discloses an underwater oil pipe hanger integrated with a built-in gate valve and a driving structure, which is mainly suitable for an underwater vertical Christmas tree system, and the working principle is as follows:
before the tubing hanger of the present invention is lowered, the subsea wellhead assembly (including the high pressure wellhead head and the various casing heads inside) is lowered into the sea floor and the cementing operation is completed.
The position depth of the innermost casing head in the underwater wellhead device is measured by adopting other matched tools, the thread on the height adjusting ring 7 of the oil pipe hanger is rotated according to the position depth, the height of the height adjusting ring 7 is adjusted, and the height adjusting ring 7 is locked to a preset position by screwing the anti-rotation screw II 15. The locking profile II 22 on the pressing sleeve 1 and the locking profile I21 on the lifting ring 2 are connected with an installation and recovery tool, and the unlocking state of the C-shaped clamping ring 5 shown in figure 4 is kept.
After the tubing hanger of the present invention is lowered into an underwater wellhead assembly, the seating slope 62 at the bottom of the height adjustment ring 7 contacts the inner casing head, and the seal II 8 and the lip metal seal 9 are respectively engaged with the corresponding sealing surfaces on the casing head to establish sealing. The pressing sleeve 1 is pressed downwards through the installation and recovery tool, the pressing sleeve 1 vertically moves downwards for a section of stroke, the C-shaped clamping ring 5 is outwards unfolded under the driving of the pressing conical surface 63 at the bottom of the pressing sleeve 1 and clamped into a corresponding type groove on the underwater wellhead device, and the locking between the oil pipe hanger and the underwater wellhead device is realized. In the process of pressing sleeve 1 to move down, the I55 on the pressing sleeve 1 and the II 56 on the lifting ring 2 are in interference contact in sequence and generate elastic deformation, as shown in FIG. 8, finally, the I55 and the II 56 staggered buckling rings are realized, and under the condition that enough lifting force is not available on the pressing sleeve 1, the I55 and the II 56 protruding rings cannot be separated, the locking positions of the pressing sleeve 1 and the C-shaped clamping ring 5 are kept, and accidental unlocking is prevented, as shown in FIG. 3.
After the subsea tree is put in, the guide groove at the bottom of the subsea tree is circumferentially aligned with the anti-rotation guide block 52, so that the electrical connector at the bottom of the subsea tree, the hydraulic connector of the subsea tree and the annular channel thereof are aligned with the electrical connector 3 at the upper part, the hydraulic connector 20 at the upper part and the vertical annular hole I43 in the drawing 2 one by one, then the subsea tree is slowly put down to a target position and locked on an underwater wellhead device, so that the communication between the subsea tree and the electrical connector, the hydraulic connector and the annular channel on the tubing hanger is realized, and a plurality of channels such as downhole chemical injection, downhole safety valve control, downhole power and communication between the tubing hanger and the subsea tree are established. Meanwhile, the sealing element of the subsea tree is matched and sealed with the sealing molded surface 19 on the hanger body 6, and the production channel of the subsea tree is communicated with the cavity 17 of the hanger body 6.
To ensure pressure isolation during the tubing hanger running of the present invention, it is generally necessary to temporarily install a wireline plug 61 and lock the wireline plug 61 to the wireline plug mounting profile 16, as shown in fig. 10. After the tubing hanger is successfully locked in the underwater wellhead device, the wire rope plug 61 is connected through a matching tool and unlocked from the wire rope plug mounting profile 16, and the wire rope plug 61 together with the matching tool passes through the cavity 17 of the hanger body 6 and is recovered through the drift diameter of the Christmas tree. The oil and gas production channel between the tubing hanger and the Christmas tree is established.
The gate 31 is normally in a closed state, when the oil pipe hanger is subjected to a function test or when the production needs, an annulus channel needs to be opened, hydraulic pressure from a hydraulic hole on the oil production tree is injected into a hydraulic cavity 39 through an upper hydraulic joint 20 in fig. 5, the seal VII 40, the seal V37 and the seal VI 38 ensure that the hydraulic cavity 39 becomes a closed cavity, the pressure of the hydraulic cavity 39 is increased along with the injection of the hydraulic pressure, the driving piston 25 is pushed to vertically move downwards together with the round nut 24 and the valve rod 26, the valve rod 26 pushes the gate 31 in the gate cavity 33 to move downwards along the guide strip 32, the compression spring 27 in the spring cavity 36 is further compressed until the gate 31 reaches a target position, the gate hole 34 is completely communicated with the valve seat hole 50 in the valve seat 44, and the gate valve is in an open state at the moment.
When the annular passage needs to be closed, the hydraulic pressure in the hydraulic cavity 39 is discharged through the upper hydraulic joint 20 in fig. 5, along with the reduction of the hydraulic pressure, the driving piston 25, the round nut 24 and the valve rod 26 move vertically upwards under the spring force of the compression spring 27, the valve rod 26 pulls the gate plate 31 in the gate plate cavity 33 to move upwards along the gate plate guide strip 32, the compression spring 27 in the spring cavity 36 returns to the initial installation state, after the gate plate 31 reaches the target position, the gate plate hole 34 is completely staggered with the valve seat hole 50 in the valve seat 44, the valve seat hole 50 is blocked by the blind plate at the lower part of the gate plate 31, and the gate valve is in the closed state.
When the operations such as oil extraction or well repair are finished, the oil pipe hanger needs to be recovered. Before recovery, a matching tool is required to be used for connecting the steel wire rope plug 61, the steel wire rope plug is placed through the drift diameter of the Christmas tree and the drift diameter 17 of the hanger and is locked in the steel wire rope plug installation molded surface 16, the cavity 17 of the hanger body 6 and the inner diameter space of an oil pipe are sealed, and the underground oil gas and the environment are guaranteed to be isolated.
When the oil pipe hanger is recovered, the installation and recovery tool is connected with and kept locked with the locking profile I21 and the locking profile II 22 on the oil pipe hanger again, the pressing sleeve 1 is lifted and moved upwards, the convex ring I55 and the convex ring II 56 for anti-loosening function are separated from each other after overcoming interference and generating elastic deformation, the pressing sleeve 1 is continuously lifted and pulled, the contact surface between the pressing conical surface 63 at the bottom of the pressing sleeve 1 and the inner diameter conical surface 64 of the C-shaped clamping ring 5 is gradually reduced, and the C-shaped clamping ring 5 radially contracts to a state before locking under the self elastic action, so that the oil pipe hanger and an underwater wellhead device are unlocked. And lifting the installation and recovery tool, transmitting the weight of the oil pipe 11 to the lifting ring 2 through the hanger body 6 without bearing by the compression sleeve 1, and finally installing the recovery tool to recover the oil pipe hanger to the platform surface.
When the hydraulic control of the installation and recovery tool fails and the oil pipe hanger cannot be recovered due to an accident, the emergency recovery of the oil pipe hanger can be realized by adopting a mechanical recovery tool. The specific method comprises the following steps: the mechanical recovery tool is put in, only connected with a locking profile II 22 on an oil pipe hanger and kept locked, the pressing sleeve 1 is pulled to move upwards, a convex ring I55 and a convex ring II 56 which are used for anti-loosening are separated after interference is overcome and elastic deformation occurs, the pressing sleeve 1 is continuously pulled, the contact surface of an indentation conical surface 63 at the bottom of the pressing sleeve 1 and an inner diameter conical surface 64 of a C-shaped clamping ring 5 is gradually reduced, when the pressing sleeve 1 moves upwards to the bottom surface of a rectangular hole 59 to be in contact with a plurality of stop blocks 41 fixed on a hanger body 6, the stop of the limited position is realized, the C-shaped clamping ring 5 radially contracts to a locking front state under the self elastic action, and the unlocking of the oil pipe hanger and an underwater wellhead device is realized. And continuously lifting the mechanical recovery tool, wherein the weight of the oil pipe 11 is transmitted to the compression sleeve 1 through the hanger body 6 and the stop block 41 without being borne by the lifting ring 2, and finally the mechanical recovery tool recovers the oil pipe hanger to the platform surface in an emergency.
Through the mode, the underwater oil pipe hanger integrated with the built-in gate valve and the driving structure can be applied to deep sea underwater well completion operation, the built-in gate valve and the driving structure are integrated in the oil pipe hanger, an annular channel can be controlled to be opened and closed repeatedly, the structure is compact, and control response is rapid; the gate valve is designed in a failure safety type, so that the operation process is safe and reliable; the height adjusting function is provided, the underwater cementing condition is better adapted, and the operation difficulty and cost are reduced; the emergency recovery function is arranged, controllable recovery under the accident condition of the oil pipe hanger is guaranteed, the safety factor of underwater equipment is effectively improved, and the marine oil gas exploration and development requirements are met.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910152428.0A CN109899015B (en) | 2019-02-28 | 2019-02-28 | Subsea tubing hanger integrated with built-in gate valve and drive structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910152428.0A CN109899015B (en) | 2019-02-28 | 2019-02-28 | Subsea tubing hanger integrated with built-in gate valve and drive structure |
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| Publication Number | Publication Date |
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| CN109899015A CN109899015A (en) | 2019-06-18 |
| CN109899015B true CN109899015B (en) | 2021-06-15 |
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| CN114876399B (en) * | 2022-06-02 | 2024-05-14 | 盐城宝通机械科技有限公司 | Dabber formula sleeve pipe hanger convenient to maintain |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253887A (en) * | 1925-06-22 | 1927-06-30 | Evence Coppee Et Cie | Improvements in and relating to coke ovens |
| US6378613B1 (en) * | 1999-02-11 | 2002-04-30 | Fmc Corporation | Large bore subsea Christmas tree and tubing hanger system |
| CN101131074A (en) * | 2006-08-23 | 2008-02-27 | 中国石油天然气集团公司 | Hanger of minor-diameter pipe subsurface agent and gas pouring device |
| CN102409992A (en) * | 2011-10-19 | 2012-04-11 | 宝鸡石油机械有限责任公司 | Integrated tubing hanger for underwater horizontal christmas tree |
| CN102536161A (en) * | 2010-12-22 | 2012-07-04 | 韦特柯格雷公司 | Tubing hanger shuttle valve |
| CN104612627A (en) * | 2015-01-19 | 2015-05-13 | 四川华宇石油钻采装备有限公司 | Oil pipe hanger capable of closing and opening oil pipe passageway |
| CN206785340U (en) * | 2017-03-27 | 2017-12-22 | 中国石油大学(北京) | Boll-weevil hanger promptly reclaims instrument |
| CN208502716U (en) * | 2018-07-03 | 2019-02-15 | 苏州道森钻采设备股份有限公司 | A kind of multi-purpose type wellhead assembly |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202249932U (en) * | 2011-09-15 | 2012-05-30 | 宋卫东 | Gate valve under-pressure tapping device for oil field |
| US9689236B2 (en) * | 2012-12-24 | 2017-06-27 | Steelhaus Technologies, Inc. | Liner hanger |
| NO341605B1 (en) * | 2014-12-05 | 2017-12-11 | Vetco Gray Scandinavia As | Landing string for landing a production hanger in a production run in a wellhead |
| US9803440B2 (en) * | 2015-03-09 | 2017-10-31 | Halliburton Energy Services, Inc. | Setting a downhole tool in a wellbore |
| US20170306711A1 (en) * | 2016-04-26 | 2017-10-26 | Baker Hughes Incorporated | Hydraulic Whipstock Anchor |
| US10538988B2 (en) * | 2016-05-31 | 2020-01-21 | Schlumberger Technology Corporation | Expandable downhole seat assembly |
-
2019
- 2019-02-28 CN CN201910152428.0A patent/CN109899015B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253887A (en) * | 1925-06-22 | 1927-06-30 | Evence Coppee Et Cie | Improvements in and relating to coke ovens |
| US6378613B1 (en) * | 1999-02-11 | 2002-04-30 | Fmc Corporation | Large bore subsea Christmas tree and tubing hanger system |
| CN101131074A (en) * | 2006-08-23 | 2008-02-27 | 中国石油天然气集团公司 | Hanger of minor-diameter pipe subsurface agent and gas pouring device |
| CN102536161A (en) * | 2010-12-22 | 2012-07-04 | 韦特柯格雷公司 | Tubing hanger shuttle valve |
| CN102409992A (en) * | 2011-10-19 | 2012-04-11 | 宝鸡石油机械有限责任公司 | Integrated tubing hanger for underwater horizontal christmas tree |
| CN104612627A (en) * | 2015-01-19 | 2015-05-13 | 四川华宇石油钻采装备有限公司 | Oil pipe hanger capable of closing and opening oil pipe passageway |
| CN206785340U (en) * | 2017-03-27 | 2017-12-22 | 中国石油大学(北京) | Boll-weevil hanger promptly reclaims instrument |
| CN208502716U (en) * | 2018-07-03 | 2019-02-15 | 苏州道森钻采设备股份有限公司 | A kind of multi-purpose type wellhead assembly |
Non-Patent Citations (1)
| Title |
|---|
| 海洋500m水深水下立式采油树设计开发;孙传轩;《石油机械》;20180410;第46卷(第4期);第4页 * |
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| CN109899015A (en) | 2019-06-18 |
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