CN213144427U

CN213144427U - Double-pipe hanger

Info

Publication number: CN213144427U
Application number: CN202021921737.4U
Authority: CN
Inventors: 汪立鑫; 张茂全; 王斌; 唐小华; 李克诚
Original assignee: Shifang Huifeng Petroleum Extraction Machinery Co ltd
Current assignee: Shifang Huifeng Petroleum Extraction Machinery Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-05-07
Anticipated expiration: 2030-09-07

Abstract

The utility model provides a double-pipe hanger, the purpose is solved current double-pipe hanger dismouting loaded down with trivial details, sealed poor technical problem of effect. The oil pipe hanger comprises a first oil pipe hanger body and a second oil pipe hanger body which are spliced into a cylindrical structure, wherein an annular boss is arranged on the outer circumferential surface of the cylindrical structure and is positioned at the lower parts of the two oil pipe hanger bodies, and a gap is formed between the upper parts of the two oil pipe hanger bodies; the sealing ring is sleeved on the peripheries of the two oil pipe hangers at the top of the annular boss, the compression ring is sleeved on the peripheries of the two oil pipe hangers at the top of the sealing ring, the annular boss, the sealing ring and the compression ring outer ring are provided with a plurality of bolt holes with coincident central axes, and the bolt holes are internally provided with fixing bolts in a penetrating manner. The utility model discloses the condition that the installation is not in place appears when can avoiding two oil pipe hanger installations, and the installation is dismantled conveniently, avoids long-time use the condition that appears leaking completely, has improved sealing performance.

Description

Double-pipe hanger

Technical Field

The utility model belongs to the technical field of the tubing hanger and specifically relates to a double-pipe hanger is related to.

Background

The tubing hanger is a device for supporting a tubing string and sealing an annular space between the tubing and a casing, and is generally installed in a tubing head cross-joint or an assembly main body for combined use. And among the prior art, two components of a whole that can function independently oil pipe hangers installation are dismantled loaded down with trivial details complicacy, and sealed effect is poor moreover, and the condition of revealing easily appears, takes place well control risk.

Disclosure of Invention

To the above situation, for overcoming prior art's defect, the utility model aims at providing a double-pipe hanger has solved the loaded down with trivial details, the sealed poor technical problem of effect of current double-pipe hanger dismouting.

In order to achieve the above object, the utility model provides a following technical scheme:

a dual tubing hanger comprising: a first tubing hanger body; the second oil pipe hanger body is spliced with the first oil pipe hanger body to form a cylindrical structure, an annular boss is arranged on the outer circumferential surface of the cylindrical structure and located on the lower portions of the first oil pipe hanger body and the second oil pipe hanger body, and a gap is formed between the upper portions of the first oil pipe hanger body and the second oil pipe hanger body; the sealing rings are sleeved on the peripheries of the first oil pipe hanger body and the second oil pipe hanger body and tightly attached to the tops of the annular bosses; the compression ring is arranged at the top of the sealing ring and sleeved on the peripheries of the first oil pipe hanger body and the second oil pipe hanger body; the annular boss, the sealing ring and the pressing ring outer ring are provided with a plurality of bolt holes with coincident central axes, and fixing bolts penetrate through the bolt holes.

The utility model discloses a fixing bolt carries out firm fixed with clamping ring, sealing washer and annular boss, appears installing the condition that does not target in place when avoiding two oil pipe hanger installations, has reduced the well control risk, and the installation is dismantled conveniently, and links up the fastening, avoids the condition that the hanger drops to appear. The sealing ring can be used for well filling gaps left at the joint of the two oil pipe bodies, so that the leakage condition caused by long-time use is completely avoided, and the sealing performance is improved. The utility model discloses simple structure, convenient operation, it is sealed effectual.

Optionally, first annular seal grooves are respectively formed in the upper portions of the outer circumferences of the first oil pipe hanger body and the second oil pipe hanger body, and first O-shaped seal rings are arranged in the first annular seal grooves.

Optionally, a second annular sealing groove is further formed in the upper portion of the outer circumference of the first oil pipe hanger body and the upper portion of the outer circumference of the second oil pipe hanger body respectively, a second O-shaped sealing ring is arranged in each second annular sealing groove, and the second O-shaped sealing ring and the first O-shaped sealing ring are arranged in parallel relatively.

The two O-shaped sealing rings are used for sealing, so that the leakage condition is avoided, and the sealing reliability is further improved.

Optionally, the sealing ring is a rectangular sealing ring. Rectangular seal ring top and bottom respectively with clamping ring bottom, annular boss top horizontal fit, further improved the leakproofness, and can also improve the durability.

Optionally, the waist side of the pressing ring close to the outside is provided with an annular groove. Preferably, the annular groove is trapezoidal in shape. Is favorable for being matched with an external jackscrew component for use, and is convenient to use.

Optionally, the upper portion of the bolt hole on the outer ring of the pressure ring is further provided with a fixing sleeve, and the fixing bolt penetrates through the fixing sleeve and is in threaded connection with the pressure ring, the sealing ring and the bolt hole of the annular boss. Is favorable for more firm and reliable connection.

Optionally, the depth of the bolt hole on the annular boss is less than half of the height of the annular boss and greater than one third of the height of the annular boss.

Optionally, the bottom end of the annular boss is provided with an inclined surface, and the top end surface is a horizontal surface.

The utility model discloses beneficial effect does:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Reference numerals: 1. a first tubing hanger body; 2. a second tubing hanger body; 3. a seal ring; 4. pressing a ring; 40. an annular groove; 5. a first O-ring seal; 6. a second O-ring seal; 7. fixing a sleeve; 8. fixing the bolt; 9. an annular boss; 90. a bevel; 10. a void.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the claimed embodiments. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the embodiments of the present application, it is to be understood that the terms "height", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, are used in the orientation or positional relationship indicated in the drawings, and are used for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the embodiments of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the embodiments of the present application, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of the embodiments of the present application, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present application. Moreover, the claimed embodiments may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of brevity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Among the prior art, two components of a whole that can function independently oil pipe hanger installation are dismantled loaded down with trivial details complicacy, and sealed effect is poor moreover, and the condition of revealing easily appears, takes place well control risk.

As shown in FIGS. 1-2, the utility model provides a double-pipe hanger, include: the oil pipe hanger comprises a first oil pipe hanger body 1, a second oil pipe hanger body 2, a sealing ring 3, a pressing ring 4, a first O-shaped sealing ring 5, a second O-shaped sealing ring 6, a fixing sleeve 7, a fixing bolt 8 and an annular boss 9.

The first oil pipe hanger body 1 and the second oil pipe hanger body 2 are matched and spliced into a cylindrical structure, and the annular boss 9 is arranged on the outer circumferential surface of the cylindrical structure and is positioned on the lower portions of the first oil pipe hanger body 1 and the second oil pipe hanger body 2. The upper parts of the first and second tubing hanger bodies 1, 10 have a void. The sealing ring 3 is arranged on the annular boss 9 and sleeved on the peripheries of the first oil pipe hanger body 1 and the second oil pipe hanger body 2, and the gap 10 and the upper end of the annular boss 9 jointly form a mounting groove for the sealing ring 3. Sealing washer 3 is the rectangle structure, 3 tops of rectangle sealing washer and bottom respectively with 4 bottoms of clamping ring, the horizontal cooperation in annular boss 9 tops, further improved the leakproofness, and can avoid this part of seal structure directly to bear the gravity of well oil pipe post, improve the durability.

The clamping ring 4 is arranged on the sealing ring 3, the sealing ring 3 is compressed, and the clamping ring 4 is sleeved on the peripheries of the first oil pipe hanger body 1 and the second oil pipe hanger body 2. The pressure ring 4 is of an integrated structure. The outer waist side of the pressure ring 4 is provided with an annular groove 40, and the shape of the annular groove 40 is preferably trapezoidal. The annular groove 40 is adapted to cooperate with an external jackscrew assembly.

The top end of the annular boss 9 is provided with an inclined plane 90, and the top end is a horizontal plane. And a plurality of bolt holes matched with the fixing bolts 8 are formed in the outer rings of the sealing ring 3, the pressing ring 4 and the annular boss 9. Specifically, a plurality of bolt holes are vertically formed along the outer ring, and the inner diameters of the bolt holes are larger than the outer diameter of the fixing bolt 8. The bolt hole of sealing washer 3 and clamping ring 4 is for running through the through-hole, and the bolt hole on the annular boss 9 does not run through completely, the utility model discloses the bolt hole degree of depth on the well annular boss 9 is less than the half of annular boss 9 height, is greater than the high third of annular boss 9. The sealing ring 3, the pressing ring 4 and the bolt hole central axes on the outer ring of the annular boss 9 are coincided with each other. The annular boss 9, the sealing ring 3 and the outer peripheral surface of the pressure ring are flush. When the sealing ring 3 is sleeved on the horizontal plane at the top end of the annular boss 9 and the pressing ring 4 is sleeved on the sealing ring 3, the fixing bolt 8 penetrates through the bolt hole to be sealed and fixed, and the pressing ring 4 moves downwards and extrudes the sealing ring 3 to seal the annular outer wall surfaces of the two oil pipe hangers where the sealing ring 3 is located.

The fixed sleeve 7 is arranged on the upper portion of the bolt hole in the pressure ring 4, and the fixing bolt 8 penetrates through the fixed sleeve 7 and then is in threaded connection with the bolt hole, so that the annular boss 9, the sealing ring 3 and the pressure ring 4 are connected in a sealing mode. The annular boss 9 and the circumferential outer walls of the two oil pipe hanger bodies can be integrally formed.

In order to further improve the sealing effect, the upper parts of the outer circumferences of the first oil pipe hanger body 1 and the second oil pipe hanger body 2 are respectively provided with a first annular sealing groove and a second annular sealing groove, the first annular sealing groove is internally provided with a first O-shaped sealing ring, and the second annular sealing groove is internally provided with a second O-shaped sealing ring 6. The first O-shaped sealing ring 5 and the second O-shaped sealing ring 6 are arranged in parallel relatively, and the two O-shaped sealing rings can be made of polytetrafluoroethylene. The compression ring 4 can be made of chromium-molybdenum alloy structural steel. The present embodiment is not described in detail, and is a technique known in the art.

Claims

1. A dual tubing hanger, comprising:

a first tubing hanger body (1);

the second oil pipe hanger body (2) is spliced with the first oil pipe hanger body (1) to form a cylindrical structure, an annular boss (9) is arranged on the outer circumferential surface of the cylindrical structure, the annular boss (9) is located on the lower portions of the first oil pipe hanger body (1) and the second oil pipe hanger body (2), and a gap (10) is formed in the upper portions of the first oil pipe hanger body (1) and the second oil pipe hanger body (2);

the sealing ring (3) is sleeved on the peripheries of the first oil pipe hanger body (1) and the second oil pipe hanger body (2) and tightly attached to the top of the annular boss (9);

the pressing ring (4) is arranged at the top of the sealing ring (3) and sleeved on the peripheries of the first oil pipe hanger body (1) and the second oil pipe hanger body (2);

the annular boss (9), the sealing ring (3) and the outer ring of the pressure ring (4) are provided with a plurality of bolt holes with coincident central axes, and the bolt holes are internally provided with fixing bolts (8) in a penetrating manner.

2. The double-pipe hanger of claim 1, wherein the first oil pipe hanger body (1) and the second oil pipe hanger body (2) are respectively provided with a first annular sealing groove at the upper part of the outer circumference, and a first O-shaped sealing ring (5) is arranged in each first annular sealing groove.

3. The double-pipe hanger of claim 2, wherein the upper portions of the outer circumferences of the first oil pipe hanger body (1) and the second oil pipe hanger body (2) are respectively provided with a second annular sealing groove, a second O-shaped sealing ring (6) is arranged in each second annular sealing groove, and the second O-shaped sealing ring (6) and the first O-shaped sealing ring (5) are arranged in parallel relatively.

4. The double tubing hanger according to claim 1, wherein the sealing ring (3) is a rectangular sealing ring.

5. The double tubing hanger according to claim 1, wherein the outer waist side of the press ring (4) is provided with an annular groove (40).

6. The dual tubing hanger of claim 5, wherein the annular groove (40) is trapezoidal in shape.

7. The double-pipe hanger as claimed in claim 1, wherein a fixing sleeve (7) is further assembled on the upper part of the bolt hole on the outer ring of the pressing ring (4), and the fixing bolt (8) penetrates through the fixing sleeve (7) to be in threaded connection with the bolt holes of the pressing ring (4), the sealing ring (3) and the annular boss (9).

8. The dual tubing hanger of claim 1, wherein the bolt hole depth on the annular boss (9) is less than half the height of the annular boss (9) and greater than one third the height of the annular boss (9).

9. The double tubing hanger according to claim 1, wherein the annular boss (9) has a sloped surface (90) at its bottom end and a horizontal surface at its top end.