CN202810760U - Electric submersible pump wellhead high-pressure sealing device - Google Patents
Electric submersible pump wellhead high-pressure sealing device Download PDFInfo
- Publication number
- CN202810760U CN202810760U CN 201220473173 CN201220473173U CN202810760U CN 202810760 U CN202810760 U CN 202810760U CN 201220473173 CN201220473173 CN 201220473173 CN 201220473173 U CN201220473173 U CN 201220473173U CN 202810760 U CN202810760 U CN 202810760U
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- hanger
- sealing
- seal
- cable
- electric
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- Expired - Fee Related
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Abstract
The utility model relates to an oil field well sealing device, in particular to an electric submersible pump wellhead high-pressure sealing device. An electric pump cable of the device passes through a cable penetration through hole in a wellhead hanger, silicon seals and sealing spacers are alternately sleeved on the electric pump cable sequentially and are pressed in sealing cavities at two ends of the through hole of the hanger; a sealing cavity at the lower end of the hanger is screwed by a sealing pressing cap through threads, and a sealing cavity at the upper end of the hanger is screwed by a secondary sealing tube; and secondary silicon seals and secondary spacers are alternately sleeved on the electric pump cable exposed on the upper part of the hanger sequentially and are pressed into a sealing cavity on the upper part of the secondary sealing tube by screwing a secondary sealing pressing cap. When the casing pressure is 21.5MPa, the sealing device still can ensure effective seal, is convenient to mount, simple in structure, safe and reliable, and overcomes a defect that oil is leaked at a cable penetration position of a wellhead when the casing pressure of the conventional electric pump wellhead is high.
Description
Technical field:
The utility model relates to a kind of oil field shaft mouth sealing device, particularly a kind of oil-submersible electric pump high pressure seal.
Background technology:
Before the Electric Submersible Pump Unit completion, need to oil-submersible cable is upper through well mouth hanger from the ring set space of down-hole, then be connected on the electric pump switch board.In the actual production, because the continuous output natural gas in down-hole, therefore the ring set space exists larger pressure, for avoiding natural gas leaking outside pit shaft, need to partly implement sealing to the electric pump well head and to cable penetration.Conventional electric pump well head often after electric pump well is produced a period of time, when casing pressure is slightly high, can oil and gas leakage occur at the wellhead cable penetrating place because the restriction of seal form can only be born the lower casing pressure in down-hole.
The utility model content:
The technical problems to be solved in the utility model provides a kind of oil-submersible electric pump high pressure seal, and this device has been realized still guaranteeing effective sealing when casing pressure is 21.5MPa, and is easy for installation, simple in structure, safe and reliable.Overcome existing electric pump well head when casing pressure is slightly high, the deficiency of oil and gas leakage can occur at the wellhead cable penetrating place.
Technical solution adopted in the utility model is: a kind of oil-submersible electric pump high pressure seal, comprise hanger and O shape circle, and O shape snare is in the seal groove of hanger lower end; Electric-pump cable passes the cable penetration through hole on the well mouth hanger, and O-ring seal and sealing spacer ring alternately are through on the electric-pump cable successively, and are pressed in the annular seal space at hanger through hole two ends; The annular seal space of hanger lower end is tightened by screw thread with seal pressure cap, hanger upper end annular seal space is tightened with the secondary seal pipe, secondary seal cushion rubber and secondary seal spacer ring alternately are enclosed within on the electric-pump cable that exposes on hanger top successively, and tighten in the annular seal space that is pressed into secondary seal pipe top by the secondary seal pressure cap.
The beneficial effects of the utility model are: the utility model has been owing to adopted secondary sealer, thereby has when casing pressure is 21.5MPa, still can guarantee the effect of effective sealing, and is easy for installation, simple in structure, safe and reliable.
Description of drawings:
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is structural representation of the present utility model.
The specific embodiment:
As shown in drawings, a kind of oil-submersible electric pump high pressure seal comprises that hanger 5 and O shape circle 6, O shape circle 6 is enclosed within the seal groove of hanger 5 lower ends; Electric-pump cable 10 passes the cable penetration through hole on the well mouth hanger 5, and O-ring seal 7 and sealing spacer ring 8 alternately are through on the electric-pump cable 10 successively, and are pressed in the annular seal space at hanger 5 through hole two ends; The annular seal space of hanger 5 lower ends is tightened by screw thread with seal pressure cap 9, so that realize passing through the purpose of part sealing after O-ring seal 7 distortion in the annular seal space of lower end.Hanger 5 upper end annular seal spaces are tightened with secondary seal pipe 4, and sealing is realized in the upper end.Secondary seal cushion rubber 3 and secondary seal spacer ring 2 alternately are enclosed within on the electric-pump cable 10 that exposes on hanger 5 tops successively, and tighten in the annular seal space that is pressed into secondary seal pipe 4 tops by secondary seal pressure cap 1, realize passing through the secondary seal of part.
In production application, at first the seal group by hanger 5 two ends realizes sealing to the cable penetration place, prevents the seepage of down-hole casing gas, behind the gas process secondary seal pipe 4 of part seepage, can realize the secondary seal effect to it by the seal group of secondary seal pipe 4.
Be understandable that, more than about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (1)
1. an oil-submersible electric pump high pressure seal comprises hanger (5) and O shape circle (6), and O shape circle (6) is enclosed within the seal groove of hanger (5) lower end; It is characterized in that: electric-pump cable (10) passes the cable penetration through hole on the well mouth hanger (5), and O-ring seal (7) and sealing spacer ring (8) alternately are through on the electric-pump cable (10) successively, and are pressed in the annular seal space at hanger (5) through hole two ends; The annular seal space of hanger (5) lower end is tightened by screw thread with seal pressure cap (9), hanger (5) upper end annular seal space is tightened with secondary seal pipe (4), secondary seal cushion rubber (3) and secondary seal spacer ring (2) alternately are enclosed within on the electric-pump cable (10) that exposes on hanger (5) top successively, and tighten in the annular seal space that is pressed into secondary seal pipe (4) top by secondary seal pressure cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473173 CN202810760U (en) | 2012-09-17 | 2012-09-17 | Electric submersible pump wellhead high-pressure sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473173 CN202810760U (en) | 2012-09-17 | 2012-09-17 | Electric submersible pump wellhead high-pressure sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202810760U true CN202810760U (en) | 2013-03-20 |
Family
ID=47869658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220473173 Expired - Fee Related CN202810760U (en) | 2012-09-17 | 2012-09-17 | Electric submersible pump wellhead high-pressure sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202810760U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967442A (en) * | 2014-05-19 | 2014-08-06 | 江苏金石科技有限公司 | Metal sealing device for cable through device hole in tubing hanger |
| CN107882528A (en) * | 2017-12-13 | 2018-04-06 | 江苏威尔德钻采设备有限公司 | Split flange cable penetration device well head mounting structure |
| CN110397416A (en) * | 2019-08-27 | 2019-11-01 | 中油国际(尼日尔)公司 | A kind of electric pump well head anti-leak high pressure seal |
-
2012
- 2012-09-17 CN CN 201220473173 patent/CN202810760U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967442A (en) * | 2014-05-19 | 2014-08-06 | 江苏金石科技有限公司 | Metal sealing device for cable through device hole in tubing hanger |
| CN107882528A (en) * | 2017-12-13 | 2018-04-06 | 江苏威尔德钻采设备有限公司 | Split flange cable penetration device well head mounting structure |
| CN110397416A (en) * | 2019-08-27 | 2019-11-01 | 中油国际(尼日尔)公司 | A kind of electric pump well head anti-leak high pressure seal |
| CN110397416B (en) * | 2019-08-27 | 2021-12-10 | 中油国际(尼日尔)公司 | Anti-leakage high-pressure sealing device for electric pump well mouth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20130917 |