CN201016996Y - Pressure-bearing thrusting needle - Google Patents
Pressure-bearing thrusting needle Download PDFInfo
- Publication number
- CN201016996Y CN201016996Y CNU200720104149XU CN200720104149U CN201016996Y CN 201016996 Y CN201016996 Y CN 201016996Y CN U200720104149X U CNU200720104149X U CN U200720104149XU CN 200720104149 U CN200720104149 U CN 200720104149U CN 201016996 Y CN201016996 Y CN 201016996Y
- Authority
- CN
- China
- Prior art keywords
- pin
- pressure
- contact pin
- porcelain tube
- bearing
- 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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Abstract
A pressure pin comprises an insulated porcelain tube (1), a pin seat (2), and a pin (3). The pressure pin is characterized in that the insulated porcelain tube is arranged inside the pin seat (2), while the pin (3) is arranged in the insulated tube (1). Proven through a temperature circulation test, the pin can not only meet the requirement for increase of pin cores in the case that the size is limited, but also can promote the insulation performance of a multi-core pressure pin. Under the t down hole emperature of 175 centigrade degrees and the down hole pressure of 140 Mpa the insulation resistance of the pin and an instrument shell reaches 500 M Omega to ensure the good conditions of a well-logging signal and to greatly promote the signal transmission reliability of an instrument in the a well. Thus, the pressure pin is widely applicable.
Description
Technical field:
The utility model is used for a kind of pressure-bearing contact pin of oil well logging instrument, it is parts in the petroleum prospecting logging instrumentation, be mainly used in the signal transmission of the subsurface equipment of oiling in internal and external pressure balance, the instrument chamber, these parts can be 175 ℃ at downhole temperature, pressure is to work under the condition of 140Mpa, the insulation resistance of contact pin and tool housing reaches 500M Ω, and the logging signal transmission is all right.
Background technology:
At present, most both at home and abroad holocentric contact pin structure of using, single core pressure-bearing contact pin is made of contact pin, insulation tube and contact pin body, O-ring seals, adopt sintered form between contact pin, insulator and the contact pin body, a certain amount of high-temperature solder is gone up on the way between contact pin, insulator and the Plug pin patch bay, and O-ring seals can be changed at any time, the sealing surface diameter is Φ 8, the connection screw thread is M6, and the well logging by for many years facts have proved that single core pressure-bearing contact pin technology of sintering reaches a standard.At downhole temperature is 175 ℃, and pressure is that the insulation 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 owing to be subjected to the restriction and the cumulative restrictions that require of contact pin core a few days of subsurface equipment physical dimension more, the diameter of single needle is reduced as far as possible, pass through structural design, the sealing surface diameter is defined as Φ 6, single pressure-bearing contact pin structure is made up of contact pin, lip-type packing, porcelain tube, sealing matrix, insulation tube, adopt between contact pin, porcelain tube, the sealing matrix that high-temp glue is bonding to form, the lip rubber seal circle is bonding with high-temp glue, be molded on the contact pin body assembly, can not change.
The pressure-bearing contact pin is packed into, and its lip rubber seal circle is in compressed state always behind the pressure-bearing socket because the viscoelasticity of rubber, rubber by compression after, compression stress can reduce in time, shows as compression stress relaxation, remove pressure after, can not recover original profile, produce permanent strain.In high temperature and oily medium, these phenomenons are more remarkable, and it can directly influence the sealing property of seal.In addition, rubber especially under higher temperature, can cause expanding, softening and intensity, hardness reduces in oily medium, and simultaneously, plastifier 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 serviceability instability has the oil impregnate phenomenon.And 175 ℃ of temperature, the insulation resistance of contact pin and shell has only 10M Ω under the situation of pressure 140Mpa.
Because logging operation is field work, and each logging cost is very high, so the functional reliability to instrument and device requires very high, defective in view of present multicore pressure-bearing contact pin, and a kind of new instrument need be provided with 31 core pressure-bearing contact pins in the sealing surface diameter is the size of φ 45mm, diameter is the difficult problem that the pressure-bearing contact pin of Φ 6 can't be arranged, and has designed the utility model voluntarily.
Summary of the invention:
The purpose of this utility model is to provide a kind of pressure-bearing contact pin, and it had both improved the insulating property of multicore pressure-bearing contact pin, makes instrument signal transmission all right again, has also satisfied arranging of in diameter is the size of φ 45mm 31 core pressure-bearing contact pins.
The utility model is achieved in that and comprises porcelain tube 1, Plug pin patch bay 2, contact pin 3 that be provided with porcelain tube 1 in the Plug pin patch bay 2, contact pin 3 assigns in the porcelain tube 1.
Plug pin patch bay 2 is provided with number 〉=1 of porcelain tube 1.
The number of contact pin 3 〉=1.
The quantity correspondent equal of the quantity of porcelain tube 1 and contact pin 3.
Being equilateral triangle between the contact pin 3 of Plug pin patch bay 2 and the contact pin 3 arranges.
The two ends of porcelain tube 1 exceed Plug pin patch bay 2 both ends of the surface.
Advantage of the present utility model is: this contact pin proves through temperature cycling test, it had both satisfied the requirement that contact pin core number increases under the size restrictions situation, the insulating property of multicore pressure-bearing contact pin have also been improved, at downhole temperature is 175 ℃, pressure is under the 140MPa condition, and the insulation resistance of contact pin and tool housing reaches 500M Ω, makes the logging signal transmission of instrument all right, improved the reliability of subsurface equipment greatly, applied range at the side signal transmission face.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is single pressure-bearing contact pin structural representation.
Embodiment
As shown in Figure 1, on the Plug pin patch bay 2 that high-strength stainless steel is made, being equilateral triangle between contact pin 3 and the contact pin 3 arranges, 31 pin holes of the discharge of rule, the porcelain tube 1 of packing in the pin hole on Plug pin patch bay 2, the two ends of porcelain tube 1 exceed Plug pin patch bay 2 both ends of the surface, the gap of the pin hole on porcelain tube 1 external diameter and the Plug pin patch bay 2 is suitable, the contact pin 3 of in the hole of porcelain tube 1, packing into, the gap of porcelain tube 1 endoporus and contact pin 3 is suitable, in the gap of porcelain tube 1 external diameter and pin hole and the left end appropriate location in the gap of porcelain tube 1 endoporus and contact pin 3, evenly coat a kind of high-temperature-resistant adhesive 4 (as shown in Figure 2) that can satisfy functional requirement, at contact pin 3, porcelain tube 1, Plug pin patch bay 2 and high-temperature-resistant adhesive 4 assemble in the process of shaping, the diagram pressure direction with pressue device to contact pin 3, porcelain tube 1 adds a definite value pressure, and black box heated, be shaped in 2 hours at 180 ℃ of following constant temperature, promptly under the constant pressure and constant temperature state, keep the regular hour moulding.
Claims (6)
1. a pressure-bearing contact pin comprises porcelain tube (1), Plug pin patch bay (2), contact pin (3), it is characterized in that: be provided with porcelain tube (1) in the Plug pin patch bay (2), contact pin (3) assigns in the porcelain tube (1).
2. a kind of pressure-bearing contact pin according to claim 1 is characterized in that: Plug pin patch bay (2) is provided with number 〉=1 of porcelain tube (1).
3. a kind of pressure-bearing contact pin according to claim 1 is characterized in that: number 〉=1 of contact pin (3).
4. a kind of pressure-bearing contact pin according to claim 1 is characterized in that: the quantity correspondent equal of the quantity of porcelain tube (1) and contact pin (3).
5. a kind of pressure-bearing contact pin according to claim 1 is characterized in that: be equilateral triangle between contact pin (3) on the Plug pin patch bay (2) and the contact pin (3) and arrange.
6. a kind of pressure-bearing contact pin according to claim 1 is characterized in that: the two ends of porcelain tube (1) exceed Plug pin patch bay (2) both ends of the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720104149XU CN201016996Y (en) | 2007-04-06 | 2007-04-06 | Pressure-bearing thrusting needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720104149XU CN201016996Y (en) | 2007-04-06 | 2007-04-06 | Pressure-bearing thrusting needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201016996Y true CN201016996Y (en) | 2008-02-06 |
Family
ID=39057491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720104149XU Expired - Lifetime CN201016996Y (en) | 2007-04-06 | 2007-04-06 | Pressure-bearing thrusting needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201016996Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852444A (en) * | 2020-06-11 | 2020-10-30 | 中国海洋石油集团有限公司 | Lower short section for measurement while drilling near drill bit and measurement while drilling near drill bit measuring device |
-
2007
- 2007-04-06 CN CNU200720104149XU patent/CN201016996Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852444A (en) * | 2020-06-11 | 2020-10-30 | 中国海洋石油集团有限公司 | Lower short section for measurement while drilling near drill bit and measurement while drilling near drill bit measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: CHINA PETROLEUM GROUP LOGGING LTD. ¬ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: China National Petroleum Group logging Co., Ltd. Number: 06 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: China National Petroleum Group logging Co., Ltd. Number: 06 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ¬ TO: CHINA PETROLEUM GROUP LOGGING LTD. ¬ |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080206 |
|
| CX01 | Expiry of patent term |