CN202914901U - Seal device for threading cable in coiled tube - Google Patents
Seal device for threading cable in coiled tube Download PDFInfo
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- CN202914901U CN202914901U CN201220545595.5U CN201220545595U CN202914901U CN 202914901 U CN202914901 U CN 202914901U CN 201220545595 U CN201220545595 U CN 201220545595U CN 202914901 U CN202914901 U CN 202914901U
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- seal
- cable
- piston
- housing
- connecting sleeve
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Abstract
The utility model discloses a seal device for threading a cable in a coiled tube. The seal device belongs to the field of tools for inserting cables into coiled tubes of petroleum equipment. The seal device for threading the cable in the coiled tube comprises a casing, a connection sleeve and a connection pipe. The casing is a hollow cylinder, the connection sleeve is arranged at one end of the casing, the connection pipe is arranged at the other end of the casing, a body of a cable seal device is formed, and a piston, a spring and a seal device are arranged in an inner cavity of the body. The seal device is arranged in the casing, a hydraulic device is adopted to press, so that in the process that the cable is threaded into the coiled tube, when the cable is subjected to water pressure, due to the fact that an upper pressing cover and a lower pressing cover tightly press a seal rubber core to enable the seal rubber core to deform and brace the cable, a seal effect is achieved, contact force between the seal rubber core and the cable can be adjusted through the hydraulic device, and liquid leakage is effectively avoided. The seal device for threading the cable in the coiled tube is particularly suitable for being applied to seal during pressurizing in the process that the cable is threaded into the coiled tube in oil well operation.
Description
Technical field
The utility model relates to the coiled tubing cable implantation tool field of petroleum equipment, and particularly a kind of coiled tubing is worn cable sealing device.
Background technique
Produce in the situation that oil well is normal, usually utilize coiled tubing to carry out workover eration.Underground monitoring to continuous oil pipe operation is to realize by the connection GCU of the cable in the coiled tubing and bottom-hole transmitter, can be the operating personnel by the cable transmission downhole data shaft bottom information is provided, so that the operating personnel tackles the variation that constantly occurs in the operation process fast by adjusting running parameter.
The prior art coiled tubing is a continuous flexible steel pipe, its diameter is generally 1～2 inch, length can be at 2000～30000 feet, coiled tubing is coiled on the large-scale winding cylinder by a circle circle, when being lowered to oil well, by being positioned at a chicksan that twines centre of the drum treatment fluid is pumped into oil pipe, make cylinder be in rotation status, coiled tubing is unclamped from twining cylinder, then with it by a gooseneck guider, it is lowered to pit shaft after coiled tubing is straightened; After the end of job, continuous reeled tubing is tripped out from well, again be coiled in and twine on the cylinder.Because oil pipe is continuous, being lowered in the oil well process, it need not to connect, can in being lowered to and tripping out the pit shaft process, keep continuous circulation.
Cable is in penetrating the process of coiled tubing, front end with cable connects drawing head first, suppress in coiled tubing by the hydraulic pressure suction booster, utilize hydraulic pressure to advance drawing head to move ahead along the coiled tubing inner chamber, and progressively penetrate in the coiled tubing by drawing head drive cable.In order to guarantee when pumping into hydraulic pressure, seal and enter cable in the coiled tubing, cable sealing device will be set when wearing wireline operation.
Existing oil well is worn cable sealing device, generally adopts the machinery type operation, compresses by adjusting bolt, and the degree of holding tightly of control rubber plate and cable plays the effect of sealing.The problem of its existence is: when advancing the internal pressure increase, the liquid in the coiled tubing can be revealed by the gap of rubber plate and cable, and sealing effect is poor, and Safety performance is low, and rubber plate is short working life, and seal degree is unadjustable.
Summary of the invention
In order to solve the problem that seals when the prior art cable pumps into hydraulic pressure in penetrating the process of coiled tubing, the utility model embodiment provides a kind of coiled tubing to wear cable sealing device, in the employing gland with press down cover press seal glue core, make the packing unit distortion hold cable tightly, play the effect of sealing, prevent leak of liquid.Described technological scheme is as follows:
A kind of coiled tubing is worn cable sealing device, described device comprises: housing, connecting sleeve, connecting tube, its housing is hollow circular cylinder, one end is provided with connecting sleeve, the other end is provided with connecting tube, consist of the body of cable sealing device, described cable sealing device chamber body is provided with piston, spring, seal arrangement.
Particularly, an end of described housing is provided with inner stopper, and the other end and connecting tube scyewed joint are provided with through hole on the housing outer wall, and joint is installed in it, and joint connects extraneous hydraulic pressure installation.
Particularly, described connecting sleeve is the hollow circuit cylinder boss structure, be provided with rabbet groove on the small end external diameter, be provided with seal groove on the external diameter of large end and the internal diameter, thrust ring is installed in the described rabbet groove to be fixed on connecting sleeve on the housing, be provided with the seal ring that seals between connecting sleeve and the housing in the external diameter seal groove of the large end of connecting sleeve, be provided with the seal ring that seals between connecting sleeve and the piston in the internal diameter seal groove of the large end of described connecting sleeve, the large end boss of connecting sleeve is installed on the inner stopper of housing.
Particularly, described piston is hollow circuit cylinder multidiameter shaft structure, two ends multidiameter shaft diameter is less than the middle part shaft diameter, piston one end passes connecting sleeve, adopt with connecting sleeve that Step Shaft is spacing to be connected, be provided with hydraulic pressure groove and seal groove on the external diameter of piston middle part axle, inner chamber one end of piston is provided with step, the described hydraulic pressure groove formation fuel tank that communicates with the through hole of housing, be provided with the seal ring that seals between piston and the housing in the seal groove, piston connects with seal arrangement by step, and the other end of seal arrangement is arranged in the inner chamber of connecting tube, and the inner chamber of connecting tube is communicated with center hole.
Particularly, be set with spring on the end multidiameter shaft of described piston and on the upper gland of seal arrangement, spring one end is against on the interior edge face of piston middle part axle, and the other end is against on the interior edge face of connecting tube.
Particularly, described seal arrangement comprises at least: upper gland, packing unit, lower gland, be provided with packing unit between upper gland and the lower gland, and packing unit and pressing down in the inner chamber that is set on connecting tube, upper gland is arranged on the inner chamber outside of connecting tube.
Further, the surface of contact of described upper gland and packing unit is arc surface, and the surface of contact of packing unit and lower gland is the plane, and lower gland is against on the connecting tube internal chamber wall.
Further, described upper gland, packing unit and lower gland are provided with center hole, and the aperture is equal and concentric, and concentric with the center hole of connecting tube, and upper gland and lower gland are along the center line relative engagement.
Compared to existing technology, the beneficial effect that brings of the technological scheme that provides of the utility model embodiment is:
The utility model embodiment is by arranging sealing device structure in housing, and adopt hydraulic pressure installation compression mode to operate, make at coiled tubing and wear in the cable process, when cable is subject to hydraulic pressure, since the upper gland of seal arrangement with press down cover press seal glue core, make the packing unit distortion hold cable tightly, play the effect of sealing, contact force by between hydraulic pressure installation adjustable sealing glue core and cable effectively prevents leak of liquid.
Description of drawings
In order to be illustrated more clearly in the technological scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the cable sealing device structural representation that the utility model embodiment provides.
Each symbolic representation implication is as follows among the figure: 1 piston, 1-1 hydraulic pressure groove, 1-2 seal groove, 1-3 step, 2 connecting sleeves, 2-1 rabbet groove, 2-2 external diameter seal groove, 2-3 internal diameter seal groove, 3 thrust rings, 4 seal rings, 5 joints, 6 housings, the 6-1 inner stopper, 6-2 through hole, 7 springs, 8 seal arrangements, the upper gland of 8-1,8-2 packing unit, gland under the 8-3,9 connecting tubes, 9-1 center hole.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing the utility model mode of execution is described in further detail.
Referring to shown in Figure 1, the utility model embodiment provides a kind of coiled tubing to wear cable sealing device, comprises at least: the component such as piston 1, connecting sleeve 2, thrust ring 3, O RunddichtringO 4, joint 5, housing 6, spring 7, seal arrangement 8, connecting tube 9; Its housing 6 is the cylindrical body of hollow, and an end is provided with connecting sleeve 2, and the other end is provided with connecting tube 9, and connecting tube 9 adopts with housing 6 and is threaded, and consists of the body of cable sealing device, and its inner chamber is provided with piston 1, spring 7, seal arrangement 8.
Particularly, as preferably, an end of described housing 6 is provided with inner stopper 6-1, the other end is provided with internal thread and connects with connecting tube 9 outside threads, be provided with a radial direction through hole 6-2 on the outer wall of housing 6, joint 5 is installed in the through hole 6-2, connect with extraneous prior art hydraulic pressure installation by joint 5; Described connecting sleeve 2 is the cylinder boss structure of hollow, be provided with rabbet groove 2-1 on the small end external diameter, be provided with seal groove 2-2 on the external diameter of large end and the internal diameter, 2-3, in the described rabbet groove 2-1 thrust ring 3 is installed, by thrust ring 3 connecting sleeve 2 is fixed on the housing 6, in the external diameter seal groove 2-2 of described connecting sleeve 2 large ends O RunddichtringO 4 is installed, be used for the sealing between connecting sleeve 2 and the housing 6, in the internal diameter seal groove 2-3 of described connecting sleeve 2 large ends O RunddichtringO 4 is installed, be used for the sealing between connecting sleeve 2 and the piston 1, the large end of connecting sleeve 2 utilizes boss to be installed on the inner stopper 6-1 of housing 6.
Particularly, the cylinder multidiameter shaft structure that described piston 1 is hollow, two ends multidiameter shaft diameter is less than the middle part shaft diameter, one end of piston 1 passes connecting sleeve 2, adopt with connecting sleeve 2 that Step Shaft is spacing to be connected, be provided with hydraulic pressure groove 1-1 and seal groove 1-2 on the external diameter of piston 1 middle part axle, inner chamber one end of piston 1 is provided with step 1-3, the described hydraulic pressure groove 1-1 formation fuel tank that communicates with the radial direction through hole 6-2 of housing 6, O RunddichtringO 4 is installed in the seal groove 1-2, be used for the sealing between piston 1 and the housing 6, piston 1 connects with an end of seal arrangement 8 by step 1-3, the other end of seal arrangement 8 is arranged in the inner chamber of connecting tube 9, and the inner chamber of connecting tube 9 is communicated with center hole 9-1; Be set with a spring 7 on the one end multidiameter shaft of piston 1 and on the upper gland 8-1 of seal arrangement 8, an end of spring 7 is against on the interior edge face of piston 1 middle part axle, and the other end is against on the interior edge face of connecting tube 9.
Further, described seal arrangement 8 comprises at least: the component such as upper gland 8-1, packing unit 8-2, lower gland 8-3; Be provided with packing unit 8-2 between gland 8-1 and the lower gland 8-3 on it, packing unit 8-2 and lower gland 8-3 are arranged in the inner chamber of connecting tube 9, and upper gland 8-1 is arranged on the inner chamber outside of connecting tube 9; The surface of contact of upper gland 8-1 and packing unit 8-2 is arc surface, and the surface of contact of packing unit 8-2 and lower gland 8-3 is the plane, and lower gland 8-3 is against on connecting tube 9 internal chamber walls; Described upper gland 8-1, packing unit 8-2 and lower gland 8-3 are provided with center hole, the aperture equates and is concentric, and concentric with the center hole 9-1 of connecting tube 9, upper gland 8-1 and lower gland 8-3 use along the center line relative engagement, and cable is in the central position when guaranteeing crush seal glue core 8-2.
The utility model embodiment's working principle: when coiled tubing is worn cable work, in order to guarantee when pumping into hydraulic pressure, sealing enters the cable in the coiled tubing, cable is penetrated upper gland 8-1, the packing unit 8-2 of seal arrangement 8 and the center hole of lower gland 8-3 in turn from the center hole of this device piston 1, pass again the center hole 9-1 of connecting tube 9; Connect existing hydraulic pressure installation by joint 5, extraneous hydraulic power enters the fuel tank that forms between hydraulic pressure groove 1-1 and the housing 6 by joint 5, pushing piston 1 motion, piston 1 Compress Spring 7 also promotes upper gland 8-1 crush seal glue core 8-2, make packing unit 8-2 distortion hold cable tightly, play the effect of hermetically-sealed cable.Behind the extraneous hydraulic power of removal, pushing piston 1 resets under the elastic force effect of spring 7, and packing unit 8-2 modification is discharged, and packing unit 8-2 and electrical cables separate are convenient to take out cable.
In addition, the utility model embodiment adopts gland and presses down nested structure, and cable is entered smoothly, and centering when guaranteeing cable seal has effectively prevented cable unstability, bending, improves the working life of packing unit; The seal degree of packing unit and cable can be regulated, and packing unit is conveniently replaced, effectively reduces operating cost; Utilize spring to promote extrusion piston and reset, simple and reliable for structure; Therefore the utlity model has widely application prospect, be specially adapted in the oil well operation, wear the sealing of cable process when suppressing in the coiled tubing of coiling.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a coiled tubing is worn cable sealing device, described device comprises: housing (6), connecting sleeve (2), connecting tube (9), its housing (6) is hollow circular cylinder, one end is provided with connecting sleeve (2), the other end is provided with connecting tube (9), consist of the body of cable sealing device, it is characterized in that, described cable sealing device chamber body is provided with piston (1), spring (7), seal arrangement (8).
2. coiled tubing according to claim 1 is worn cable sealing device, it is characterized in that, one end of described housing (6) is provided with inner stopper (6-1), the other end and connecting tube (9) scyewed joint, be provided with through hole (6-2) on housing (6) outer wall, joint (5) is installed in it, and joint (5) connects extraneous hydraulic pressure installation.
3. coiled tubing according to claim 1 and 2 is worn cable sealing device, it is characterized in that, described connecting sleeve (2) is the hollow circuit cylinder boss structure, be provided with rabbet groove (2-1) on the small end external diameter, be provided with seal groove (2-2) on the external diameter of large end and the internal diameter, (2-3), thrust ring (3) is installed in the described rabbet groove (2-1) to be fixed on connecting sleeve (2) on the housing (6), be provided with the seal ring (4) for sealing between connecting sleeve (2) and the housing (6) in the external diameter seal groove (2-2) of the large end of connecting sleeve (2), be provided with the seal ring (4) for sealing between connecting sleeve (2) and the piston (1) in the internal diameter seal groove (2-3) of the large end of described connecting sleeve (2), the large end boss of connecting sleeve (2) is installed on the inner stopper (6-1) of housing (6).
4. coiled tubing according to claim 1 and 2 is worn cable sealing device, it is characterized in that, described piston (1) is hollow circuit cylinder multidiameter shaft structure, two ends multidiameter shaft diameter is less than the middle part shaft diameter, piston (1) one end passes connecting sleeve (2), adopt with connecting sleeve (2) that Step Shaft is spacing to be connected, be provided with hydraulic pressure groove (1-1) and seal groove (1-2) on the external diameter of piston (1) middle part axle, inner chamber one end of piston (1) is provided with step (1-3), described hydraulic pressure groove (1-1) the formation fuel tank that communicates with the through hole (6-2) of housing (6), be provided with the seal ring (4) for sealing between piston (1) and the housing (6) in the seal groove (1-2), piston (1) connects with seal arrangement (8) by step (1-3), the other end of seal arrangement (8) is arranged in the inner chamber of connecting tube (9), and the inner chamber of connecting tube (9) is communicated with center hole (9-1).
5. coiled tubing according to claim 1 is worn cable sealing device, it is characterized in that, be set with spring (7) on the one end multidiameter shaft of described piston (1) and on the upper gland (8-1) of seal arrangement (8), spring (7) one ends are against on the interior edge face of piston (1) middle part axle, and the other end is against on the interior edge face of connecting tube (9).
6. coiled tubing according to claim 1 is worn cable sealing device, it is characterized in that, described seal arrangement (8) comprises at least: upper gland (8-1), packing unit (8-2), lower gland (8-3), be provided with packing unit (8-2) between upper gland (8-1) and the lower gland (8-3), packing unit (8-2) and lower gland (8-3) are arranged in the inner chamber of connecting tube (9), and upper gland (8-1) is arranged on the inner chamber outside of connecting tube (9).
7. coiled tubing according to claim 6 is worn cable sealing device, it is characterized in that, described upper gland (8-1) is arc surface with the surface of contact of packing unit (8-2), packing unit (8-2) is the plane with the surface of contact of lower gland (8-3), and lower gland (8-3) is against on connecting tube (9) internal chamber wall.
8. coiled tubing according to claim 6 is worn cable sealing device, it is characterized in that, described upper gland (8-1), packing unit (8-2) and lower gland (8-3) are provided with center hole, the aperture equates and is concentric, and concentric with the center hole (9-1) of connecting tube (9), upper gland (8-1) and lower gland (8-3) are along the center line relative engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220545595.5U CN202914901U (en) | 2012-10-23 | 2012-10-23 | Seal device for threading cable in coiled tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220545595.5U CN202914901U (en) | 2012-10-23 | 2012-10-23 | Seal device for threading cable in coiled tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914901U true CN202914901U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220545595.5U Expired - Fee Related CN202914901U (en) | 2012-10-23 | 2012-10-23 | Seal device for threading cable in coiled tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914901U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775062A (en) * | 2013-07-25 | 2014-05-07 | 中国石油天然气股份有限公司 | Coiled tubing pressure piston conveying device and method |
| CN103775750A (en) * | 2012-10-23 | 2014-05-07 | 中国石油天然气集团公司 | Coiled tubing cable-penetrating sealing device |
| CN110500434A (en) * | 2019-09-25 | 2019-11-26 | 江西鸥迪铜业有限公司 | A kind of spool for electric expansion valve |
-
2012
- 2012-10-23 CN CN201220545595.5U patent/CN202914901U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775750A (en) * | 2012-10-23 | 2014-05-07 | 中国石油天然气集团公司 | Coiled tubing cable-penetrating sealing device |
| CN103775062A (en) * | 2013-07-25 | 2014-05-07 | 中国石油天然气股份有限公司 | Coiled tubing pressure piston conveying device and method |
| CN103775062B (en) * | 2013-07-25 | 2017-02-08 | 中国石油天然气股份有限公司 | Coiled tubing pressure piston conveying device and method |
| CN110500434A (en) * | 2019-09-25 | 2019-11-26 | 江西鸥迪铜业有限公司 | A kind of spool for electric expansion valve |
| CN110500434B (en) * | 2019-09-25 | 2024-05-28 | 江西鸥迪铜业有限公司 | Valve core for electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20211023 |