CN2499637Y - Long active seal device for test well cable joint - Google Patents
Long active seal device for test well cable joint Download PDFInfo
- Publication number
- CN2499637Y CN2499637Y CN 01268287 CN01268287U CN2499637Y CN 2499637 Y CN2499637 Y CN 2499637Y CN 01268287 CN01268287 CN 01268287 CN 01268287 U CN01268287 U CN 01268287U CN 2499637 Y CN2499637 Y CN 2499637Y
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- CN
- China
- Prior art keywords
- joint
- seal
- short circuit
- sealing
- short
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a long active seal device for test well cable joint for the connection with underground testing instrument, comprising a seal joint 3, wherein two outer ends of the seal joint 3 are provided with taper threads and respectively connected with a rope cap 1 and a short joint 9; the other end of the short joint 9 is in taper thread connection with a cable joint 11; the short joint 9 is hermetically connected with the seal joint 3 and the cable joint 11; the short joint 9 is provided with a central hole, and a seal device is arranged inside the short joint 9; a press cap 2 is arranged in the rope cap 1 which is in taper thread connection with the connection. The utility model adopts a coaxial seal structure design, forms a seal cavity in the short joint 9, is resistant to high temperature, resistant to aging and high in borne pressure, and forms no leakage or short circuit phenomenon.
Description
The utility model relates to a kind of well testing cable joining long-term seal device, is used to connect the downhole testing instrument.
As everyone knows, when carrying out the oil well downhole testing, must test instrument be arrived one deck position, down-hole down, just can carry out formation testing by cable.The attachment portion of well testing cable and downhole instrument must seal, and prevents that the liquid infiltration from causing the instrument short circuit.Usually the seal arrangement that adopts is a simple SEALING FITTING, is enclosed within the outside, attachment portion of cable and test instrument, injects hot silica gel then, after the silica gel cooling, just plays the effect of sealing cable junctions.The shortcoming that this SEALING FITTING exists is: long-term work is when the field, and silica gel is very fast aging, and the liquid in the testing well very easily infiltrates, and causes the test instrument short circuit; The join strength of cable and test instrument is little, and when instrument bears pulling force when excessive, the ease of connection of well testing cable and test instrument comes off and test instrument is fallen in the well.
The purpose of this utility model provides a kind of well testing cable joining long-term seal device, sealing device good seal performance, and stretching resistance is big, sealing load height, long service life.
The utility model well testing cable joining long-term seal device comprises SEALING FITTING 3, and 3 liang of outer ends of SEALING FITTING are provided with tapered thread, is connected with short circuit 9 with rope socket 1 respectively, and the other end of short circuit 9 is connected with end 11 tapered threads; Short circuit 9 is tightly connected with SEALING FITTING 3, end 11; Sealing short circuit 9 is provided with center hole, and inside is provided with seal arrangement; Be provided with pressure cap 2 in the rope socket 1, rope socket 1 is connected with pressure cap 2 tapered threads.
The utility model adopts the co-axial seal structural design, on pressure cap and the rope socket an identical locking conical surface is arranged all, and in the time of making pulling force greatly, the taper direction of pressure cap in rope socket compresses outer steel wire.
Form a Seal cage in the short circuit 9, the well testing cable is connected sealing with the downhole testing instrument reliable, bears the pressure height, can not form seepage, short circuit phenomenon, high temperature resistant, anti-aging.
Accompanying drawing 1 is embodiment of the present utility model.
Describe below in conjunction with accompanying drawing.
The well testing cable is by behind the pressure cap, and outer armouring wire is fixed between rope socket 1 and the pressure cap 2, and rope socket 1 is connected with pressure cap 2 tapered threads, and in the time of making pulling force more greatly, pressure cap 2 compresses outer steel wire along the taper direction in the rope socket 1.
Well testing cable inner core compresses the back through packing ring and sealing gasket and seals when the SEALING FITTING 3; The short circuit two ends are adopted the seal ring sealing to make and are formed a Seal cage in the short circuit, guaranteed in the whole test time, the reliable connection of cable joining and reliable insulating property, the assurance of long-term safety is whole to be connected continuous operation for a long time 2～3 years even longer under down-hole pressure 40Mpa, 150 ℃ of environment of temperature
The seal section that packing ring 4,6 sealing gaskets 5,7 clamping nuts 8 form, because four parts are made up of two kinds of different materials, the sealed pad 5 of cable inner core compresses in the nut compressing process, and sealing gasket 5 can not follow nut and rotate together, so can not cause cable core to disconnect because of reversing too greatly.In addition, it is that a left-handed end is dextrorotation that the screw thread design at short circuit 9 two ends becomes an end, and the cable inner core can not followed rotation equally and be caused and reverse excessive and disconnect in tightening the process of short circuit like this.
Claims (3)
1, a kind of well testing cable joining long-term seal device, comprise SEALING FITTING (3), it is characterized in that: SEALING FITTING (3) two outer ends are provided with tapered thread, are connected with short circuit (9) with rope socket (1) respectively, and the other end of short circuit (9) is connected with end (11) tapered thread; Short circuit (9) is tightly connected with SEALING FITTING (3), end (11); Sealing short circuit (9) is provided with center hole, and inside is provided with seal arrangement; Be provided with pressure cap (2) in the rope socket (1), rope socket (1) is connected with pressure cap (2) tapered thread.
2, well testing cable joining long-term seal device as claimed in claim 1, it is characterized in that: described sealing short circuit (9) center hole inner sealing device comprises packing ring (4), (6) and sealing gasket (5), clamping nut (8).
3, the long-acting joint sealing device of well testing cable as claimed in claim 1 or 2 is characterized in that: the pressure cap (2) in the rope socket (1) is a brass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268287 CN2499637Y (en) | 2001-10-19 | 2001-10-19 | Long active seal device for test well cable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268287 CN2499637Y (en) | 2001-10-19 | 2001-10-19 | Long active seal device for test well cable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2499637Y true CN2499637Y (en) | 2002-07-10 |
Family
ID=33674498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01268287 Expired - Lifetime CN2499637Y (en) | 2001-10-19 | 2001-10-19 | Long active seal device for test well cable joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2499637Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963645A (en) * | 2015-06-16 | 2015-10-07 | 中国石油天然气股份有限公司 | Cable-passing wellhead used for intelligent separated water injection of cable |
-
2001
- 2001-10-19 CN CN 01268287 patent/CN2499637Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963645A (en) * | 2015-06-16 | 2015-10-07 | 中国石油天然气股份有限公司 | Cable-passing wellhead used for intelligent separated water injection of cable |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111019 Granted publication date: 20020710 |