CN213684058U - Built-in coiled tubing hanger and coiled tubing system - Google Patents
Built-in coiled tubing hanger and coiled tubing system Download PDFInfo
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- CN213684058U CN213684058U CN202022648697.7U CN202022648697U CN213684058U CN 213684058 U CN213684058 U CN 213684058U CN 202022648697 U CN202022648697 U CN 202022648697U CN 213684058 U CN213684058 U CN 213684058U
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Abstract
The utility model relates to an oil gas collection field, concretely relates to built-in coiled tubing hanger and coiled tubing system, wherein, built-in coiled tubing hanger includes the hanger body, be provided with the through-hole that is used for placing coiled tubing on the hanger body, hanger body outer wall is used for with the sealed adaptation of oil pipe head, slips assembly and seal assembly have set gradually along the through-hole axial in the through-hole, seal assembly is connected with the hanger body, seal assembly is used for sealing between hanger body and the coiled tubing, the slips assembly is used for connecting coiled tubing, at least some of slips assembly is located the through-hole. According to the built-in coiled tubing hanger, in the process of converting a large coiled tubing into a coiled tubing with a smaller diameter, the built-in coiled tubing hanger is used for transition, and a tubing head and a collection tree do not need to be replaced, so that the cost is saved, and the construction difficulty is reduced.
Description
Technical Field
The utility model relates to an oil gas collection field, concretely relates to built-in coiled tubing hanger and coiled tubing system.
Background
In the current oil extraction process, in order to increase the yield and the efficiency, a large oil pipe is used for operation in the earlier stage of some oil wells, and a coiled tubing with a smaller diameter is placed into the oil wells for continuous operation after the large oil pipe is lifted out in the later stage, so that the yield and the benefit are improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome existence among the prior art: the existing coiled tubing hanger cannot be matched with a small tubing, so that the tubing head and a collection tree need to be replaced, and the replacement process is very troublesome.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
the built-in continuous oil pipe hanger comprises a hanger body, wherein a through hole used for placing a continuous oil pipe is formed in the hanger body, the outer wall of the hanger body is matched with an oil pipe head in a sealing mode, a slip assembly and a sealing assembly are sequentially arranged in the through hole along the axial direction of the through hole, the sealing assembly is connected with the hanger body and used for sealing between the hanger body and the continuous oil pipe, the slip assembly is used for connecting the continuous oil pipe, and at least one part of the slip assembly is located in the through hole.
According to the built-in continuous oil pipe hanger, at least one part of a slip assembly and a sealing component are arranged in a through hole of a hanger body and are used for sealing and connecting a continuous oil pipe with a smaller diameter, and the outer wall of the hanger body is matched with the existing oil pipe head in a sealing mode, so that in the process that a large oil pipe is converted into the continuous oil pipe with the smaller diameter, the built-in continuous oil pipe hanger is used for transition, the oil pipe head and a collecting tree do not need to be replaced, the cost is saved, and the construction difficulty is reduced.
In the above aspect, the slip assembly may be capable of abutting the seal assembly in use.
Preferably, the through hole is a stepped hole, the through hole is provided with a large hole section and a small hole section which are coaxially arranged, a stepped part is arranged between the large hole section and the small hole section, the small hole section is used for a coiled tubing to pass through, the sealing assembly is positioned in the large hole section, and the slip assembly is positioned on one side, far away from the stepped part, of the sealing assembly.
Preferably, the seal assembly includes in proper order along the sealing washer seat of honour, sealing washer and the sealing washer seat of honour that the macropore section axial set up, the outer wall of sealing washer with the sealed cooperation of macropore section inner wall, the inner wall of sealing washer is used for with the sealed cooperation of coiled tubing, the sealing washer is located down the sealing washer with between the step portion, be provided with the connecting piece on the sealing washer seat of honour, the connecting piece runs through in proper order the sealing washer with behind the sealing washer seat of honour with the step portion is connected.
Preferably, the slip assembly abuts against the seal ring upper seat.
Preferably, one side of the slip assembly, which is close to the sealing ring upper seat, is a conical surface, and the sealing ring upper seat is provided with a conical surface which is abutted against the conical surface.
Preferably, the slips assembly includes the slips seat and is used for the cover to establish in the coiled tubing outside and the slips that is connected with coiled tubing, the slips seat cover is located the slips outside, the slips seat cooperatees with the slips, the slips seat is put on the sealing washer upper berth, the sealing washer upper berth with hanger body (4) are connected.
Preferably, the slip seat has an inner cavity, the slips is located the inner cavity, the slips is close to the tip of sealing component is the toper, be provided with on the inner cavity lateral wall with the conical surface of toper looks adaptation, the slip seat is kept away from sealing component's tip threaded connection has the delivery to connect, the delivery connect with the slips is kept away from sealing component's tip looks butt.
Through the structure, the delivery joint is in threaded connection with the slip seat, the end part of the delivery joint is screwed into the inner cavity, the slip is pushed from the end part of the slip far away from the sealing component, so that the slip is tightly pressed in the slip seat and is connected with the slip coiled tubing, and the purpose of connecting the slip assembly with the coiled tubing is achieved.
Preferably, the delivery connector comprises an annular connecting part, the outer side of the annular connecting part is in threaded connection with the side wall of the inner cavity, and the end part, close to the slip, of the annular connecting part is abutted to the slip.
The application also discloses a coiled tubing system, including coiled tubing and as the application built-in coiled tubing hanger, coiled tubing's one end pass behind the seal assembly with the slips assembly is connected, the seal assembly with coiled tubing seals up the cooperation.
According to the coiled tubing system, at least one part of the slip assembly and the sealing component are arranged in the through hole of the hanger body to seal and connect the coiled tubing with the smaller diameter, the outer wall of the hanger body is matched with the existing tubing head in a sealing mode, so that in the process that a large tubing is converted into the coiled tubing with the smaller diameter, the built-in coiled tubing hanger is used for transition, the tubing head and a collection tree do not need to be replaced, the cost is saved, and the construction difficulty is reduced.
Compared with the prior art, the beneficial effects of the utility model are that:
1. according to the built-in continuous oil pipe hanger, at least one part of a slip assembly and a sealing component are arranged in a through hole of a hanger body and are used for sealing and connecting a continuous oil pipe with a smaller diameter, and the outer wall of the hanger body is matched with the existing oil pipe head in a sealing mode, so that in the process that a large oil pipe is converted into the continuous oil pipe with the smaller diameter, the built-in continuous oil pipe hanger is used for transition, the oil pipe head and a collecting tree do not need to be replaced, the cost is saved, and the construction difficulty is reduced.
2. According to the built-in coiled tubing hanger, the delivery connector is in threaded connection with the slip seat, the end portion of the delivery connector is screwed into the inner cavity, the slip is far away from the slip, the end portion of the sealing component pushes the slip, the slip is tightly pressed in the slip seat, and meanwhile the slip is connected with a slip coiled tubing, so that the purpose that the slip assembly is connected with the coiled tubing is achieved.
3. According to the coiled tubing system, at least one part of the slip assembly and the sealing component are arranged in the through hole of the hanger body to seal and connect the coiled tubing with the smaller diameter, the outer wall of the hanger body is matched with the existing tubing head in a sealing mode, so that in the process that a large tubing is converted into the coiled tubing with the smaller diameter, the built-in coiled tubing hanger is used for transition, the tubing head and a collection tree do not need to be replaced, the cost is saved, and the construction difficulty is reduced.
Drawings
Fig. 1 is a schematic structural diagram (longitudinal sectional view) of a coiled tubing system according to the present invention.
Fig. 2 is a schematic structural diagram of a hanger body according to the present invention.
The labels in the figure are: the method comprises the following steps of 1-delivering a joint, 2-a slip seat, 3-slips, 4-a hanger body, 5-a sealing ring upper seat, 6-a rectangular sealing ring, 7-a sealing ring lower seat, 8-a coiled tubing, 9-a large hole section, 10-a small hole section, 11-a through hole, 12-a slip assembly, 13-a sealing component, 14-a step part, 15-a connecting piece and 16-a counter bore.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.
Example 1
The coiled tubing system shown in fig. 1 and 2 comprises a coiled tubing 8 and a built-in coiled tubing hanger, wherein one end of the coiled tubing 8 is connected with the slip assembly 12 after penetrating through the sealing component 13, and the sealing component 13 is in sealing fit with the coiled tubing 8.
The built-in continuous oil pipe hanger comprises a hanger body 4, wherein a through hole 11 used for placing a continuous oil pipe 8 is formed in the hanger body 4, the outer wall of the hanger body 4 is used for being matched with an oil pipe head in a sealing mode, a slip assembly 12 and a sealing assembly 13 are sequentially arranged in the through hole 11 along the axial direction of the through hole 11, the sealing assembly 13 is connected with the hanger body 4, the sealing assembly 13 is used for sealing between the hanger body 4 and the continuous oil pipe 8, the slip assembly 12 is used for being connected with the continuous oil pipe 8, and at least one part of the slip assembly 12 is located in the through hole 11.
Specifically, the through hole 11 is a stepped hole, the through hole 11 is provided with a large hole section 9 and a small hole section 10 which are coaxially arranged, a stepped portion 14 is arranged between the large hole section 9 and the small hole section 10, the small hole section 10 is used for a coiled tubing 8 to pass through, the sealing component 13 is located in the large hole section 9, and the slip assembly 12 is located on one side, far away from the stepped portion 14, of the sealing component 13.
The sealing assembly comprises a sealing ring upper seat 5, a sealing ring 6 and a sealing ring lower seat 7 which are sequentially arranged along the axial direction of a large hole section 9, the outer wall of the sealing ring 6 is in sealing fit with the inner wall of the large hole section 9, the inner wall of the sealing ring 6 is used for being in sealing fit with a continuous oil pipe 8, the sealing ring lower seat 7 is located between the sealing ring 6 and a step part 14, a connecting piece 15 is arranged on the sealing ring upper seat 5, the connecting piece 15 sequentially penetrates through the sealing ring 6 and the sealing ring lower seat 7 and then is connected with the step part 14, and specifically the slip assembly is abutted to the sealing ring upper seat 5.
One side of the slip assembly, which is close to the sealing ring upper seat 5, is a conical surface, and the sealing ring upper seat 5 is provided with a conical groove which is abutted against the conical surface.
The concrete preferred bolt of connecting piece, all be provided with on sealing washer upper seat 5, sealing washer 6 and the sealing washer lower seat 7 with bolt matched with connecting hole, the pole portion of bolt pass sealing washer upper seat 5 in proper order, behind sealing washer 6 and the sealing washer lower seat 7 with 14 threaded connection of step portion, through bolt and 14 threaded connection of step portion for sealing washer upper seat 5 and sealing washer lower seat 7 can be followed the both sides extrusion fixed seal 6 of sealing washer 6, and connect sealing washer 6 on hanger body 4.
Still be provided with counter bore 16 on the side of the conical groove of sealing washer upper seat 5, the connecting hole of sealing washer upper seat 5 is seted up in the bottom of counter bore 16, and the degree of depth of counter bore 16 is greater than the degree of depth of bolt head to guarantee that the bolt can not influence between conical surface and the conical groove butt cooperation.
The slips assembly includes matched with slips seat 2 and slips 3, and 3 covers of slips are established in the 8 outsides of coiled tubing, and are connected with coiled tubing 8, 2 covers of slips seat are located 3 outsides of slips.
The slip seat 2 is placed on the sealing ring upper seat 5, and the sealing ring upper seat 5 is connected with the hanger body 4.
In use, the slip assembly can abut the seal ring upper seat 5.
The slip seat 2 is provided with an inner cavity, the slips 3 are located in the inner cavity, the slips 3 are close to the end part of the sealing component 13 is conical, the side wall of the inner cavity is provided with a conical surface matched with the conical surface, the slip seat 2 is far away from the end part of the sealing component 13 and is connected with a delivery joint 1 in a threaded manner, the delivery joint 1 is connected with the slips 3 far away from the end part of the sealing component 13 in a butting manner, the delivery joint 1 is connected with the slip seat 2 in a threaded manner, the end part of the delivery joint 1 is screwed into the inner cavity, the slips 3 is pushed away from the end part of the sealing component 13 from the slips 3, so that the slips 3 are tightly pressed in the slip seat 2 and are simultaneously connected with the slips 3 and the coiled tubing 8, and the purpose that the slips assembly 12 is connected with the.
The delivery joint 1 comprises an annular connecting part, the outer side of the annular connecting part is in threaded connection with the side wall of the inner cavity, and the annular connecting part is close to the end part of the slip 3 and is abutted against the slip 3.
The seal ring 6 of the present embodiment is preferably a rectangular seal ring.
The structure can also be installed in the following mode, the hanger body 4 is fixedly arranged in the oil pipe head of the original oil well Christmas tree through jackscrews, and the upper sealing ring seat 5, the sealing ring 6 and the lower sealing ring seat 7 are fixedly connected in the hanger body 4 through bolts for sealing; the continuous oil pipe 8 sequentially penetrates through the hanger body 4, the lower sealing ring seat 7, the sealing ring 6, the upper sealing ring seat 5, the slips 3 and the slip seat 2 and is firmly clamped by the slips 3, the delivery connector 1 is connected with the slip seat 2 through threads, the slips 3 are tightly pressed in the slip seat 2, and the slip seat 2 is arranged in the conical surface fit for one end, close to the delivery connector 1, of the upper sealing ring seat 5.
The beneficial effects of this embodiment: in the built-in coiled tubing hanger and the coiled tubing system, at least one part of the slip assembly 12 and the sealing assembly 13 are arranged in the through hole 11 of the hanger body 4 and are used for sealing and connecting the coiled tubing 8 with a smaller diameter, and the outer wall of the hanger body 4 is used for being matched with the existing tubing head in a sealing manner, so that in the process of converting a large tubing into the coiled tubing 8 with a smaller diameter, the built-in coiled tubing hanger is used for transition, the tubing head and a collection tree do not need to be replaced, the cost is saved, and the construction difficulty is reduced.
The built-in continuous oil pipe hanger can ensure that an inner hole can be hung on a continuous oil pipe with a small diameter, an outer seal of the hanger body 4 can seal a hanging sealing position of an original oil pipe head, the built-in continuous oil pipe hanger does not influence the closing of an original Christmas tree No. 1 valve, and the safety performance is more excellent; the structure is simple, the assembly and disassembly are convenient, and the maintenance is facilitated; compared with the existing built-in coiled tubing hanger, the parts are basically arranged in the hanger body 4, so that the processing is simpler, raw materials are saved, the coiled tubing 8 seal and the hanger body 4 are sealed separately from the original oil production well, the sealing performance is good, and the replacement is easy.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The built-in coiled tubing hanger is characterized by comprising a hanger body (4), wherein a through hole (11) used for placing a coiled tubing (8) is formed in the hanger body (4), the outer wall of the hanger body (4) is used for being matched with a tubing head in a sealing mode, a slip assembly (12) and a sealing assembly (13) are sequentially arranged in the through hole (11) along the axial direction of the through hole (11), the sealing assembly (13) is connected with the hanger body (4), the sealing assembly (13) is used for sealing between the hanger body (4) and the coiled tubing (8), the slip assembly (12) is used for being connected with the coiled tubing (8), and at least one part of the slip assembly (12) is located in the through hole (11).
2. The built-in coiled tubing hanger of claim 1, wherein the through hole (11) is a stepped hole, the through hole (11) has a large hole section (9) and a small hole section (10) which are coaxially arranged, a stepped part (14) is arranged between the large hole section (9) and the small hole section (10), the small hole section (10) is used for the coiled tubing (8) to pass through, the sealing assembly (13) is positioned in the large hole section (9), and the slip assembly (12) is positioned on one side of the sealing assembly (13) far away from the stepped part (14).
3. The built-in coiled tubing hanger of claim 2, wherein: seal assembly is including following in proper order sealing washer upper seat (5), sealing washer (6) and the sealing washer lower seat (7) that macropore section (9) axial set up, the outer wall of sealing washer (6) with the sealed cooperation of macropore section (9) inner wall, the inner wall of sealing washer (6) is used for with the sealed cooperation of coiled tubing (8), sealing washer lower seat (7) are located sealing washer (6) with between step portion (14), be provided with connecting piece (15) on sealing washer upper seat (5), connecting piece (15) run through in proper order sealing washer (6) with behind sealing washer lower seat (7) with step portion (14) are connected.
4. The built-in coiled tubing hanger of claim 3, wherein: the slip assembly is abutted against the upper seat (5) of the sealing ring.
5. The built-in coiled tubing hanger of claim 4, wherein: one side of the slip assembly, which is close to the sealing ring upper seat (5), is a conical surface, and the sealing ring upper seat (5) is provided with a conical groove which is abutted against the conical surface.
6. The inline coiled tubing hanger of any of claims 3-5, wherein: the slips assembly includes slip seat (2) and is used for the cover to establish slips (3) that are connected in the coiled tubing (8) outside and with coiled tubing (8), slip seat (2) cover is located slips (3) outside, slip seat (2) and slips (3) cooperate, slip seat (2) seat is put on sealing washer upper seat (5), sealing washer upper seat (5) with hanger body (4) are connected.
7. The built-in coiled tubing hanger of claim 6, wherein: slip seat (2) have the inner chamber, slips (3) are located the inner chamber, slips (3) are close to the tip of sealing component (13) is the toper, be provided with on the inner chamber lateral wall with the conical surface of toper looks adaptation, slip seat (2) are kept away from the tip threaded connection of sealing component (13) has delivery joint (1), delivery joint (1) with slips (3) are kept away from the tip looks butt of sealing component (13).
8. The built-in coiled tubing hanger of claim 7, wherein: the delivery joint (1) comprises an annular connecting part, the outer side of the annular connecting part is in threaded connection with the side wall of the inner cavity, and the annular connecting part is close to the end part of the slip (3) and is abutted against the slip (3).
9. A coiled tubing system comprising a coiled tubing (8), characterized in that: the in-line coiled tubing hanger of any of claims 1 to 8, further comprising an end of the coiled tubing (8) connected to the slip assembly (12) after passing through the seal assembly (13), the seal assembly (13) sealingly engaging the coiled tubing (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022648697.7U CN213684058U (en) | 2020-11-16 | 2020-11-16 | Built-in coiled tubing hanger and coiled tubing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022648697.7U CN213684058U (en) | 2020-11-16 | 2020-11-16 | Built-in coiled tubing hanger and coiled tubing system |
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| Publication Number | Publication Date |
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| CN213684058U true CN213684058U (en) | 2021-07-13 |
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| CN202022648697.7U Active CN213684058U (en) | 2020-11-16 | 2020-11-16 | Built-in coiled tubing hanger and coiled tubing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513284A (en) * | 2021-08-27 | 2021-10-19 | 江苏宏泰石化机械有限公司 | Compact shale gas production wellhead assembly |
-
2020
- 2020-11-16 CN CN202022648697.7U patent/CN213684058U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513284A (en) * | 2021-08-27 | 2021-10-19 | 江苏宏泰石化机械有限公司 | Compact shale gas production wellhead assembly |
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