CN2898294Y - Pressure-bearing connecting pin for petroleum logging equipment - Google Patents
Pressure-bearing connecting pin for petroleum logging equipment Download PDFInfo
- Publication number
- CN2898294Y CN2898294Y CNU2006201128380U CN200620112838U CN2898294Y CN 2898294 Y CN2898294 Y CN 2898294Y CN U2006201128380 U CNU2006201128380 U CN U2006201128380U CN 200620112838 U CN200620112838 U CN 200620112838U CN 2898294 Y CN2898294 Y CN 2898294Y
- Authority
- CN
- China
- Prior art keywords
- contact pin
- pressure
- porcelain tube
- pin
- instrument
- Prior art date
- 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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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a pressured contact pin of oil well measuring device, comprising a contact pin seat (1), a contact pin (2) and an insulated porcelain tube (3), wherein the insulated porcelain tube (3) is arranged on the contact pin seat (1); the contact pin (2) is stuck with the insulated porcelain tube (3) so as to not only meet the requirements of adding the cores of the contact pin under condition of size limitation, but also improve the insulating performance of the multi-core pressured contact pin. Under the underground conditions of temperature 175 DEG C and pressure 140MPa, the insulation resistance between the contact pin and the instrument casing can reach 500M Omega so as to ensure the good well measuring signal transmission conditions of the instrument and greatly increase the reliability on signal transmission of underground instrument with broad application range.
Description
Technical field:
The utility model relates to parts in the oil exploration logger, specifically, is a kind of pressure-bearing contact pin that is used for oil well logging instrument, is mainly used in the signal transmission of the downhole instrument of oiling in internal and external pressure balance, the instrument chamber.
Background technology:
Use holocentric contact pin structure at present mostly, constitute by contact pin, insulation tube and contact pin body, O-ring seals, adopt sintered form between contact pin, isolator and the contact pin body, a certain amount of high-temperature solder is gone up on the way between contact pin, isolator and the Plug pin patch bay, and O-ring seals can be changed at any time.Well logging by for many years facts have proved, single core pressure-bearing contact pin technology is 175 ℃ at downhole temperature, pressure is that the insulaion resistance of contact pin and tool housing reaches 500M Ω under the 140MPa condition, and the logging signal transmission of instrument is all right, but can not be used for the sealing of smaller szie.
Multicore pressure-bearing contact pin must make the diameter of single needle reduce as far as possible owing to be subjected to the restriction and the cumulative restrictions that require of contact pin core a few days of downhole instrument physical dimension more,
Its lip rubber seal circle is in compressed state always because the viscoplasticity of rubber, rubber by compression after, compressive stress can reduce in time, shows as compression stress relaxation, remove pressure after, can not recover original profile, produce permanent deformation.In high temperature and oily medium, these phenomenons are more remarkable, and it can directly influence the sealing performance of seal.In addition, rubber especially under higher temperature, can cause expanding, softening and intensity, hardness reduces in oily medium, and simultaneously, plasticizing agent in the rubber or solable matter may be gone out by oil immersion, cause weight saving, volume-diminished, cause leakage.By well logging evidence for several times, this seal and pressure bearing contact pin service behaviour instability has the oil impregnate phenomenon.And 175 ℃ of temperature, the insulaion resistance of contact pin and shell has only 10M Ω under the situation of pressure 140Mpa.
Summary of the invention:
The purpose of this utility model is to provide a kind of pressure-bearing contact pin that is used for oil well logging instrument, the insulating properties of multicore pressure-bearing contact pin had both been improved, make instrument signal transmission all right again, also satisfied arranging of in diameter is the size of φ 45mm 31 core pressure-bearing contact pins.
The purpose of this utility model is achieved in that and comprises Plug pin patch bay 1, contact pin 2, porcelain tube 3, and porcelain tube 3 is housed on the Plug pin patch bay 1, contact pin 2 and porcelain tube 3 bonding connections.
The utility model also adopts following technical scheme:
Have pin hole on the Plug pin patch bay 1, its pin hole number 〉=1.
The number of contact pin 2 〉=1.
Distance between contact pin 2 and the contact pin 2 becomes equilateral triangle to arrange.
The two ends of porcelain tube 3 exceed Plug pin patch bay 1 both ends of the surface.
Advantage of the present utility model is: this contact pin proves through temperature cycling test and on-the-spot test of many times, it had both satisfied the requirement that contact pin core number increases under the size restrictions situation, the insulating properties of multicore pressure-bearing contact pin have also been improved, at downhole temperature is 175 ℃, pressure is under the 140MPa condition, and the insulaion resistance of contact pin and tool housing reaches 500M Ω, makes the logging signal transmission of instrument all right, improved the reliability of downhole instrument greatly, applied range at the side signal transmission face.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is a side structure schematic diagram of the present utility model;
Accompanying drawing 3 is the structural representation of Plug pin patch bay.
The specific embodiment
As shown in Figure 1, mainly, porcelain tube 3 is housed on the Plug pin patch bay 1, contact pin 2 and porcelain tube 3 bonding connections by Plug pin patch bay 1, contact pin 2, porcelain tube 3.
As shown in Figure 3, on the Plug pin patch bay 1 that high-strength stainless steel is made, be that 5mm becomes equilateral triangle to arrange with distance between the contact pin 2 with contact pin 2,31 pin holes of the discharge of rule,
As shown in Figure 2, by the direction as shown porcelain tube 3 of in the pin hole of Plug pin patch bay 1, packing into, the two ends of porcelain tube 3 exceed Plug pin patch bay 1 both ends of the surface, the gap of porcelain tube 3 external diameters and pin hole is suitable, the contact pin 2 of in the hole of porcelain tube porcelain tube 3, packing into, the gap of porcelain tube 3 endoporus and contact pin is suitable, in the pin hole gap of porcelain tube 3 external diameters and Plug pin patch bay 1 and the left end appropriate location in the gap of porcelain tube 3 endoporus and contact pin 2, evenly coats a kind of high-temperature-resistant adhesive that can satisfy functional requirement.
Claims (5)
1, a kind of pressure-bearing contact pin that is used for oil well logging instrument comprises Plug pin patch bay (1), contact pin (2), porcelain tube (3), it is characterized in that: porcelain tube (3) is housed, contact pin (2) and porcelain tube (3) bonding connection on the Plug pin patch bay (1).
2, a kind of pressure-bearing contact pin that is used for oil well logging instrument according to claim 1, it is characterized in that: Plug pin patch bay has pin hole on (1), its pin hole number 〉=1.
3, a kind of pressure-bearing contact pin that is used for oil well logging instrument according to claim 1 is characterized in that: number 〉=1 of contact pin (2).
4, a kind of pressure-bearing contact pin that is used for oil well logging instrument according to claim 3 is characterized in that: the distance between contact pin (2) and the contact pin (2) becomes equilateral triangle to arrange.
5, a kind of pressure-bearing contact pin that is used for oil well logging instrument according to claim 1, it is characterized in that: the two ends of porcelain tube (3) exceed Plug pin patch bay (1) 1 both ends of the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201128380U CN2898294Y (en) | 2006-04-26 | 2006-04-26 | Pressure-bearing connecting pin for petroleum logging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201128380U CN2898294Y (en) | 2006-04-26 | 2006-04-26 | Pressure-bearing connecting pin for petroleum logging equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2898294Y true CN2898294Y (en) | 2007-05-09 |
Family
ID=38073630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201128380U Expired - Lifetime CN2898294Y (en) | 2006-04-26 | 2006-04-26 | Pressure-bearing connecting pin for petroleum logging equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2898294Y (en) |
-
2006
- 2006-04-26 CN CNU2006201128380U patent/CN2898294Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070509 |
|
| EXPY | Termination of patent right or utility model |