CN208950521U - Wellhead cable sealing device - Google Patents

Abstract

The utility model discloses a kind of wellhead cable sealing devices, comprising: ontology (1), glue core (2) and connector (3), glue core (3) are arranged in the accommodating chamber (11) of ontology (1)；Ontology (1) is connect with connector (3), and the first connecting hole (41) offered on connector (3) and valve (4) is connect；Glue core (2) includes supporting rib (21) and elastic buffer body (22), and elastic buffer body (22) setting is in supporting rib (21)；Cable (5) passes through the first passage (31) and elastic buffer body (22) of connector (3), and stretches out from the top of ontology (1)；Supporting rib (21) includes muscle body (211) and multiple extension arms (212), multiple extension arm (212) rings set to form round estrade, with the fastener cycle of connector (3), the inner wall of accommodating chamber (11) is configured as squeezing extension arm (212) ontology (1).The cable sealing device realizes sealing of the cable at well head using glue core it is not necessary that production tree is transformed.

Description

Wellhead cable sealing device

Technical field

The utility model relates to oil field development technical field, in particular to a kind of wellhead cable sealing device.

Background technique

With the continuous development of oil-gas field development technology, digital assay has become a kind of daily data processing means, Embodiment is the acquisition that tripping in detection instrument carries out downhole data into well, is carried out data transmission using cable, is faced on ground Data are analyzed.And when being connected with the cable penetration well head of downhole instrument, it needs to be sealed, to prevent the gas in well Or slot leakage or outflow of the liquid between cable and well head, to result in waste of resources.

Currently, the sealing means for wellhead cable are predominantly transformed existing production tree, by oil pipe four Aperture at logical upper flange, is combined using the rubber and gasket to match and is sealed in tapping to cable, that is, pass through pad Piece squeezes blob of viscose, expands blob of viscose with hermetically-sealed cable.

In the process of implementing the utility model, the existing technology has at least the following problems for designer's discovery:

The sealing means of existing wellhead cable need to be transformed production tree, and operation difficulty is big, and affect oil recovery after being transformed Set original design strength.

Utility model content

In consideration of it, the utility model provides a kind of wellhead cable sealing device it is not necessary that production tree is transformed, realize to tripping in Sealing of the cable of well at well head.

Specifically, including technical solution below:

A kind of wellhead cable sealing device, described device include: ontology, glue core and connector, wherein

The inside of the ontology offers the accommodating chamber being connected to up and down, and the glue core is arranged in the accommodating chamber；

The ontology is detachably connected with the connector, and the first connecting hole offered on the connector and valve is detachable Connection；

The glue core includes supporting rib and elastic buffer body, the inner hollow of the supporting rib, and the elastic buffer body is set It sets in the supporting rib；

The connector offers the first passage being connected to up and down, the elastic buffer body inner hollow, and cable passes through described First passage and the elastic buffer body, and stretched out from the top of the ontology；

The supporting rib includes muscle body and multiple extension arms that muscle body top is arranged in, and the multiple extension armlet is set Round estrade is formed, with the fastener cycle of the connector, the inner wall of the accommodating chamber is configured as described in extruding the ontology Extension arm.

In a kind of possible design, one end that the connector is connect with the valve is rounding bench-type.

In a kind of possible design, the first outer spiral shell is provided on the outer wall of one end that the connector is connect with the valve Line section, first external thread section are suitable for cooperating with the first internal thread segment on the first connecting hole hole wall.

In a kind of possible design, described device further include: the first sealing ring；

First sealing ring is arranged between the ontology and the connector.

In a kind of possible design, described device further include: packing box；

The packing box is arranged in the accommodating chamber, and is located at the top of the glue core；

Packing is filled in the packing box, the cable passes through the packing.

In a kind of possible design, described device further include: gland head；

The gland head is pressed on the packing, and the cable passes through the gland head.

In a kind of possible design, described device further include: lid；

The top of the ontology is arranged in the lid, and is connected with the ontology；

The lid offers the second channel being connected to up and down, and the cable passes through the second channel.

In a kind of possible design, described device further include: the second sealing ring；

Second sealing ring is arranged between the lid and the ontology.

In a kind of possible design, it is provided with the second internal thread segment on the inner wall on the cover cap edge, in described second Thread segment is suitable for cooperating with the second external thread section being provided on the outer wall of the body upper part.

In a kind of possible design, it is provided with third external thread section on the outer wall of the body lower part, outside the third The third internal thread segment cooperation being provided on the second connecting hole hole wall that thread segment is suitable for offering with the connector.

The beneficial effect of technical solution provided by the embodiment of the utility model includes at least:

By the way that glue core to be arranged in the accommodating chamber being connected to up and down that body interior offers, ontology is connected with connector, connects Head is connected with the first connecting hole offered on valve, and cable is allowed to pass through the first passage and glue core offered on connector Interior elastic buffer body is stretched out from the top of ontology, and since glue core includes supporting rib and elastic buffer body, elastic buffer body is set It sets in supporting rib, supporting rib includes muscle body and multiple extension arms that muscle body top is arranged in again, and multiple extension armlets set to be formed Round estrade, so that ontology, in the fastener cycle with connector, the inner wall of accommodating chamber squeezes extension arm, and extension arm squeezes The elastic buffer body in it is pressed, so that elastic buffer body is compressed, and then is tightly wrapped across its internal cable, realization pair Sealing of the cable of lower going-into-well at well head.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is a kind of half section structure diagram of wellhead cable sealing device provided by the embodiment of the utility model；

Fig. 2 is the half section structure diagram of another wellhead cable sealing device provided by the embodiment of the utility model；

Fig. 3 is the schematic perspective view of another wellhead cable sealing device provided by the embodiment of the utility model；

Fig. 4 is the structural schematic diagram of glue core in a kind of wellhead cable sealing device provided by the embodiment of the utility model；

Fig. 5 be a kind of wellhead cable sealing device provided by the embodiment of the utility model at well head using when structure show It is intended to.

Appended drawing reference in figure respectively indicates:

1- ontology, 11- accommodating chamber, the second external thread section of 12-, 13- third external thread section, 14- first connecting portion, 15- behaviour Make portion, 16- second connecting portion,

2- glue core, 21- supporting rib, 211- muscle body, 212- extension arm, 22- elastic buffer body,

3- connector, 31- first passage, the first external thread section of 32-, the second connecting hole of 33-, the second internal thread segment of 34-,

4- valve, the first connecting hole of 41-,

5- cable,

The first sealing ring of 6-,

7- packing box, 71- packing,

8- gland head,

9- lid, 91- second channel, the second internal thread segment of 92-,

The second sealing ring of 10-,

S- four-way, t- casing, y- oil pipe.

Specific embodiment

It is involved in the utility model embodiment before being described in further detail to the utility model embodiment Term position, such as " top ", " lower part " be used merely to clearly retouch on the basis of orientation shown in Fig. 1 or Fig. 2 or Fig. 3 The wellhead cable sealing device of the utility model embodiment is stated, and does not have the meaning for limiting scope of protection of the utility model.

To keep the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with attached drawing Mode is described in further detail.

The utility model embodiment provides a kind of wellhead cable sealing device, structural schematic diagram such as Fig. 1 and Fig. 5 institute Show, which includes: ontology 1, glue core 2 and connector 3.

Wherein, the inside of ontology 1 offers the accommodating chamber 11 being connected to up and down, and glue core 2 is arranged in accommodating chamber 11；

Ontology 1 is detachably connected with connector 3, and the first connecting hole 41 offered on connector 3 and valve 4 is detachably connected, As shown in Figure 5；

Glue core 2 includes supporting rib 21 and elastic buffer body 22, as shown in figure 4, the inner hollow of supporting rib 21, elastic buffer Body 22 is arranged in supporting rib 21；

Connector 3 offers the first passage 31 being connected to up and down, and 22 inner hollow of elastic buffer body, it is logical that cable 5 passes through first Road 31 and elastic buffer body 22, and stretched out from the top of ontology 1；

Supporting rib 21 includes muscle body 211 and multiple extension arms 212 that 211 top of muscle body is arranged in, as shown in figure 4, multiple 212 ring of extension arm sets to form round estrade, and with the fastener cycle of connector 3, the inner wall of accommodating chamber 11 is configured as squeezing ontology 1 Extension arm 212.

It is understood that the inner wall that accommodating chamber 11 is contacted with extension arm 212 is in constant slope, with each extension arm 212 It is in contact.

The use principle of the wellhead cable sealing device of the utility model embodiment are as follows:

By glue core 2 being arranged in the accommodating chamber 11 being connected to up and down offered inside ontology 1, ontology 1 and 3 phase of connector Even, the first connecting hole 41 offered on connector 3 and valve 4 is connected, the such that cable 5 offers on connector 3 Elastic buffer body 22 in one channel 31 and glue core 2 is stretched out from the top of ontology 1, and since glue core 2 includes supporting rib 21 and bullet Property buffer body 22, elastic buffer body 22 be arranged in supporting rib 21, supporting rib 21 again include muscle body 211 and be arranged in muscle body 211 Multiple extension arms 212 on top, multiple 212 rings of extension arm set to form round estrade, so that ontology 1 is in the fastener cycle with connector 3 In, the inner wall of accommodating chamber 11 squeezes extension arm 212, and extension arm 212 squeezes the elastic buffer body 22 in it, so that Elastic buffer body 22 is compressed, and then is tightly wrapped across its internal cable 5.

Thus, the wellhead cable sealing device of the utility model embodiment utilizes ontology 1, glue core 2 and connector 3, pass through by The first connecting hole 41 offered on connector 3 and valve 4 is connected, and avoids the transformation to production tree, it is original to maintain production tree Design strength, and the cooperation of the inner wall and glue core 2 using the accommodating chamber 11 of ontology 1 realizes to the cable 5 of lower going-into-well in well head The sealing at place.

Based on above-mentioned, since ontology 1 and connector 3 are detachably connected, in connection type, can there are many implementation, It is such as threadedly coupled, snaps connection, is keyed, be not especially limited in the utility model embodiment.

It for example, can be by being provided with third external thread section 13, third external thread section on the outer wall of 1 lower part of ontology The 13 third internal thread segments 34 for being suitable for being provided on 33 hole walls of the second connecting hole that offer with connector 3 cooperate so that ontology 1 with Connector 3, which is realized, to be threadedly coupled, as shown in Figure 1, being easily installed and dismantling.

It, can also be in connection type since the first connecting hole 41 offered on connector 3 and valve 4 is detachably connected There are many implementations, such as are threadedly coupled, snap connection, are keyed, and are not especially limited in the utility model embodiment.

In the utility model embodiment, the first outer spiral shell can be set on the outer wall of one end that connector 3 is connect with valve 4 Line section 32, as shown in Figure 1, the first external thread section 32 is suitable for the first internal thread segment on 41 hole wall of the first connecting hole (in figure Do not show) cooperation, it is threadedly coupled so that connector 3 is realized with valve 4, is easily installed and dismantles.

In order to realize the tightness sealed between connector 3 and valve 4, in structure setting, on the one hand, connector 3 and valve 4 One end of connection is rounding bench-type, as shown in Figure 1, that is to say, that the area of the cross section of one end that connector 3 is connect with valve 4 It is gradually reduced from top to bottom, so that the sealed connection with valve 4 is may be implemented in connector 3 during the installation process.

For example, connector 3 can seal screw thread using 55 degree of Taper Pipes, so that the sealing performance of connector 3 is more preferable.

In order to realize the tightness sealed between connector 3 and valve 4, in structure setting, on the other hand, the present invention is implemented The wellhead cable sealing device of example further include: the first sealing ring 6, as shown in Figure 1, the first sealing ring 6 is arranged in ontology 1 and connector Between 3, to ensure the tightness sealed between ontology 1 and connector 3.

Further, the wellhead cable sealing device of the utility model embodiment further include: packing box 7, as shown in Fig. 2, Packing box 7 is arranged in accommodating chamber 11, and is located at the top of glue core 2；Packing 71 is filled in packing box 7, cable 5 passes through packing 71, as shown in Figure 3.

It is filled with the packing box 7 of packing 71 by being arranged, cable 5 can be made in first of sealing for realizing glue core 2 On the basis of, the second sealing reinforced realizes the dual-seal to cable 5.

In order to fix packing 71, the wellhead cable sealing device of the utility model embodiment further include: gland head 8, such as Fig. 2 Shown, gland head 8 is pressed on packing 71, and cable 5 passes through gland head 8.

Gland head 8 can be made of two waney cylindrical bodies, and the small cylindrical body of size is placed in packing 71, and size is big Cylindrical body be placed on packing 71.

It is understood that 8 inner hollow of gland head, passes through convenient for cable 5；Gland head 8 can be set presses in packing box 7 Below lid, to push down packing 71, the extruding force of packing gland is transmitted.

In order to realize the fastening of packing 71, the wellhead cable sealing device of the utility model further include: lid 9, lid 9 are set It sets on the top of ontology 1, and is connected with ontology 1；Lid 9 offers the second channel 91 being connected to up and down, and it is logical that cable 5 passes through second Road 91, as shown in Figure 3.

By the way that lid 9 is arranged, can not only play the role of protecting packing box 7, but also can be real by tightening lid 9 Now to the extrusion deformation of packing 71, it is ensured that the sealing of cable 5.

In connection relationship, the second internal thread segment 92 is provided on the inner wall of the cover rim of lid 9, as shown in Fig. 2, in second Thread segment 92 is suitable for cooperating with the second external thread section 12 for being provided on the outer wall on 1 top of ontology so that lid 9 and ontology 1 it Between realize be threadedly coupled, be easily installed and dismantle.

Further, the wellhead cable sealing device of the utility model further include: the second sealing ring 10, the second sealing ring 10 It is arranged between lid 9 and ontology 1, as shown in Figure 2 or Figure 3, convenient for the tightness sealed between lid 9 and ontology 1.

On this basis, the wellhead cable sealing device of the utility model embodiment is further described through below It is bright:

For ontology 1, ontology 1 plays the role of being connected and fixed.

Specifically, ontology 1 includes connected first connecting portion 14, operation portion 15 and second connecting portion 16, first connecting portion 14 can extend into the second connecting hole 33 of connector 3, be connected with connector 3；Operation portion 15 is placed in outside, real convenient for operator Now to the operation of ontology 1；Second connecting portion 16 can be extend into lid 9, be connected with cover rim.

It is operated for the ease of the installation and removal at scene, operation portion 15 can be outer six square, as shown in Figure 3.

For glue core 2, glue core 2 plays the role of hermetically-sealed cable 5, is the key portion of the utility model embodiment Part.

Wherein, the supporting rib 21 of glue core 2 can be arch support muscle, along annulus radially radial configuration, elastic buffer Body 22 can be vulcanized rubber, and the inside of supporting rib 21 is arranged in, contacts with cable 5.

In a kind of possible example, the cable 5 in oil jacket annulus passes through casing hanger, from the side casing t of mono- wing of four-way s It is pierced by, is pierced by through connector 3, glue core 2, packing box 7 and lid 9, as shown in figure 5, oil pipe y is set in casing t；

When ontology 1 is with the fastener cycle of connector 3, the inner wall of accommodating chamber 11 squeezes extension arm 212, so that prolonging Long-armed 212 draw close mutually each other, and extension arm 212 squeezes the elastic buffer body 22 in it again, and elastic buffer body 22 is compressed, So that its space surrounded is gradually reduced, band is formed, realizes first of sealing to cable 5；

In the fastener cycle of lid 9 and ontology 1,71 coverd part 9 of packing in packing box 7 is squeezed, so that packing 71 becomes Shape packs tightly cable 5, realizes and seals to the second of cable 5.

It is understood that when there is pressure in oil jacket annulus, pressure of the lower section of proppant 21 by top upper in well, Under the effect of this pressure elasticity wear bring up again 22 closing will more closely, to improve the sealing performance of glue core 2.

When needing to dismantle cable 5, ontology 1 is unscrewed, extruding force suffered by glue core 2 can disappear, and glue core 2 is in natural resiliency It can restore to the original state under effect.

It should be noted that when the failure of the sealing effect of the wellhead cable sealing device of the utility model embodiment, it can After by disassembling main body 1, is realized and blocked using the plug that the screw thread specification with third internal thread segment 34 matches, to ensure The integrality of well head.

The above is merely for convenience of it will be understood by those skilled in the art that the technical solution of the utility model, not to Limit the utility model.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of wellhead cable sealing device, which is characterized in that described device includes: ontology (1), glue core (2) and connector (3), Wherein,

The inside of the ontology (1) offers the accommodating chamber (11) being connected to up and down, and the glue core (2) is arranged in the accommodating chamber (11) in；

The ontology (1) is detachably connected with the connector (3), and first offered on the connector (3) and valve (4) connect Hole (41) is detachably connected；

The glue core (2) includes supporting rib (21) and elastic buffer body (22), the inner hollow of the supporting rib (21), the bullet Property buffer body (22) be arranged in the supporting rib (21)；

The connector (3) offers the first passage (31) being connected to up and down, elastic buffer body (22) inner hollow, cable (5) first passage (31) and the elastic buffer body (22) are passed through, and is stretched out from the top of the ontology (1)；

The supporting rib (21) includes the multiple extension arms (212) of muscle body (211) and setting on muscle body (211) top, institute It states multiple extension arms (212) ring to set to form round estrade, the ontology (1) with the connector (3) during connecting, the appearance The inner wall of chamber (11) received is configured as squeezing the extension arm (212).

2. wellhead cable sealing device according to claim 1, which is characterized in that the connector (3) and the valve (4) One end of connection is rounding bench-type.

3. wellhead cable sealing device according to claim 1, which is characterized in that the connector (3) and the valve (4) It is provided on the outer wall of one end of connection the first external thread section (32), first external thread section (32) is suitable for connecting with described first Connect the first internal thread segment cooperation on hole (41) hole wall.

4. wellhead cable sealing device according to claim 1, which is characterized in that described device further include: the first sealing It encloses (6)；

First sealing ring (6) is arranged between the ontology (1) and the connector (3).

5. wellhead cable sealing device according to claim 1, which is characterized in that described device further include: packing box (7)；

Packing box (7) setting is located at the top of the glue core (2) in the accommodating chamber (11)；

Packing (71) are filled in the packing box (7), the cable (5) passes through the packing (71).

6. wellhead cable sealing device according to claim 5, which is characterized in that described device further include: gland head (8)；

The gland head (8) is pressed on the packing (71), and the cable (5) passes through the gland head (8).

7. wellhead cable sealing device according to claim 1, which is characterized in that described device further include: lid (9)；

Lid (9) setting is connected on the top of the ontology (1), and with the ontology (1)；

The lid (9) offers the second channel (91) being connected to up and down, and the cable (5) passes through the second channel (91).

8. wellhead cable sealing device according to claim 7, which is characterized in that described device further include: the second sealing It encloses (10)；

Second sealing ring (10) is arranged between the lid (9) and the ontology (1).

9. wellhead cable sealing device according to claim 7, which is characterized in that set on the inner wall of lid (9) cover rim It is equipped with the second internal thread segment (92), second internal thread segment (92) is suitable for and is provided on the outer wall on the ontology (1) top The second external thread section (12) cooperation.

10. wellhead cable sealing device according to claim 1, which is characterized in that on the outer wall of ontology (1) lower part It is provided with third external thread section (13), the third external thread section (13) is suitable for and the connector (3) offers second connect Third internal thread segment (34) cooperation being provided on hole (33) hole wall.