CN107489416B - Sealing component of microelectrode and installation method thereof - Google Patents
Sealing component of microelectrode and installation method thereof Download PDFInfo
- Publication number
- CN107489416B CN107489416B CN201710930226.5A CN201710930226A CN107489416B CN 107489416 B CN107489416 B CN 107489416B CN 201710930226 A CN201710930226 A CN 201710930226A CN 107489416 B CN107489416 B CN 107489416B
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- Prior art keywords
- hole
- insulating sleeve
- step hole
- sealing ring
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 title abstract description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000008398 formation water Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a sealing component of a microelectrode and an installation method thereof, wherein the sealing component of the microelectrode comprises a base body, an insulating sleeve, an electrode and a sealing ring, a first through hole is formed in the base body, a first double-step hole is formed in the first through hole along the inner wall of the base body, the insulating sleeve and the sealing ring are respectively installed in the first double-step hole, a second through hole is formed in the insulating sleeve, a second double-step hole is formed in the second through hole along the inner wall of the insulating sleeve, and the electrode and the sealing ring are respectively installed in the second double-step hole. The sealing component of the microelectrode can effectively prevent leakage of stratum water under high pressure and high temperature, and is convenient for measuring resistivity of petroleum geological measuring equipment under high temperature and high pressure.
Description
Technical Field
The invention relates to the technical field of microelectrode sealing, in particular to a microelectrode sealing component and an installation method thereof.
Background
Petroleum is also called as "industrial blood", and is one of the main objects of geological exploration as an important motive force for civilization development in recent centuries, and in geological exploration of petroleum, whether petroleum is contained in different geology or not often needs to be measured through some petroleum geological measuring equipment, and with the increase of difficulty in oil and gas exploration development and development of logging technology, logging technology is increasingly widely applied in stratum evaluation, geology, drilling and oil extraction engineering.
The existing logging method mainly adopts natural potential logging, microelectrode logging, natural gamma logging and the like, and logging equipment is utilized to deeply perform measurement in geology.
However, the conventional micro-electrode resistivity logging equipment is difficult to process and install sealing measures such as sealing rings due to small electrode spacing, and when the logging equipment is used for measuring deep geology, the formation water is easy to leak into the equipment due to high pressure in the geological depth and possibly existing formation water under the action of the high pressure.
Disclosure of Invention
The invention aims to provide a sealing component of a microelectrode and an installation method thereof, which are used for solving the problem that the existing microelectrode is easy to leak during measurement.
In order to achieve the above object, the technical scheme of the invention is to provide a sealing member of a microelectrode, the sealing member comprises a substrate, an insulating sleeve, an electrode and a sealing ring, the sealing ring comprises a first sealing ring and a second sealing ring, a first through hole is formed in the substrate, a first double-step hole is formed in the first through hole along the inner wall of the substrate, the insulating sleeve is arranged in the first through hole, the first sealing ring is arranged in the first double-step hole, the first sealing sleeve is sleeved on the insulating sleeve, a second through hole is formed in the insulating sleeve, a second double-step hole is formed in the second through hole along the inner wall of the insulating sleeve, the electrode is arranged in the second through hole, the second sealing ring is arranged in the second double-step hole, and the second sealing sleeve is sleeved on the electrode.
As a preferable technical scheme, the first double-step hole comprises a first step hole and a second step hole which are connected with each other, the diameter of the second step hole is larger than that of the first step hole, the first sealing ring is fixed in the first step hole, and the insulating sleeve is fixed in the second step hole.
As a preferable technical scheme, the second double-step hole comprises a third step hole and a fourth step hole which are connected with each other, the diameter of the fourth step hole is larger than that of the third step hole, the second sealing ring is fixed in the third step hole, and the electrode is fixed in the fourth step hole.
As a preferable technical scheme, a plurality of first through holes are formed in the base body, and sealing members consisting of electrodes and insulating sleeves are arranged in the first through holes to form an array.
As a preferable technical scheme, the insulating sleeve is made of polyether-ether-ketone composite plastic.
As a preferable technical scheme, the insulating sleeve is formed by injection molding.
As a preferable technical scheme, the sealing ring is an O-shaped ring.
As a preferable technical scheme, the inner wall of the first through hole, the insulating sleeve, the inner wall of the second through hole and the electrode are all processed into mutually matched taper.
The present invention also provides a method of installing a sealing member, the method comprising: placing a first sealing ring in a first step hole, placing an insulating sleeve in a base body along a first through hole, and fixing the insulating sleeve on a second step hole, so that the outer wall of the insulating sleeve is tightly attached to the inner wall of the first through hole on the base body, and forming a first group of sealing and leakage-preventing structures by the first sealing ring, the base body and the insulating sleeve; and placing the second sealing ring in the third step hole, placing the electrode into the insulating sleeve along the second through hole, fixing the electrode on the fourth step hole, enabling the outer wall of the electrode to be tightly attached to the inner wall of the second through hole on the insulating sleeve, and forming a second group of sealing and leakage-preventing structures by the second sealing ring, the insulating sleeve and the electrode.
The method of the invention has the following advantages:
through installing first sealing washer in first step hole, insulating cover installs in the second step hole, make and form a complete O type sealing washer installation slot between base member and the insulating cover, install the second sealing washer in the third step hole, the electrode is installed in the fourth step hole, also form a complete O type sealing washer installation slot between messenger's insulating cover and the electrode, constitute sealed leak protection structure by the sealing washer in two slot departments, when making things convenient for the sealing washer to install, utilize dual seal's structure can ensure that the stratum water in geology measuring equipment is difficult for the seepage to get into in the electrode when measuring.
Drawings
FIG. 1 is an overall schematic of a seal member of the present invention;
FIG. 2 is a schematic view of the assembly of the sealing member;
fig. 3 is a schematic illustration of the mating of an electrode with an insulating sleeve.
In the figure, 1, a substrate; 11. a first through hole; 2. an insulating sleeve; 21. a second through hole; 3. an electrode; 4. a seal ring; 41. a first seal ring; 42. a second seal ring; 5. a first double step hole; 51. a first stepped hole; 52. a second stepped hole; 6. a second double step hole; 61. a third stepped hole; 62. and a fourth stepped hole.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 and 2, the present invention provides a sealing member for a microelectrode, which comprises a base body 1, an insulating sleeve 2, an electrode 3 and a sealing ring 4. A plurality of first through holes 11 are formed in the base body 1, the first through holes 11 penetrate through the base body 1 along the length direction of the base body 1, first double-step holes 5 are formed in the first through holes 11 along the inner wall of the base body 1, the insulating sleeve 2 is installed in the first through holes 11, the sealing ring 4 is O-shaped (refer to fig. 3), the sealing ring comprises a first sealing ring 41 and a second sealing ring 42, the first sealing ring 41 is installed in the first double-step holes 5, and the first sealing ring 41 is sleeved on the insulating sleeve 2.
The insulating sleeve 2 is provided with a second through hole 21, a second double-step hole 6 is processed in the second through hole 21 along the inner wall of the insulating sleeve 2, the electrode 3 is arranged in the second through hole 21, the second sealing ring 42 is arranged in the second double-step hole 6, and the second sealing ring 42 is sleeved on the electrode 3, so that a sealing and leakage-proof structure can be formed between the substrate 1 and the insulating sleeve 2 and between the insulating sleeve 2 and the electrode 3 through the installation of the sealing ring 4, and the inner wall of the first through hole 11, the insulating sleeve 2, the inner wall of the second through hole 21 and the electrode 3 are all 1:20 is machined to a tight fitting taper.
During measurement, sealing members consisting of the electrodes 3 and the insulating sleeves 2 are arranged in the first through holes 11 to form an array, the distance between the electrodes 3 is ensured to be 5.08mm, and when the electrodes 3 are measured in geological depths, stratum water in the geological depths is not easy to leak into the electrodes 3 under high pressure by utilizing a compact structure among the members.
The first double stepped hole 5 includes a first stepped hole 51 and a second stepped hole 52 connected to each other, and the second stepped hole 52 has a diameter larger than that of the first stepped hole 51, and the first seal ring 41 is mounted on the first stepped hole 51 and fixes the insulating bush 2 on the second stepped hole 52. The second double stepped hole 6 includes a third stepped hole 61 and a fourth stepped hole 62 connected to each other, and the fourth stepped hole 62 has a larger diameter than the third stepped hole 61, and the second seal ring 42 is mounted on the third stepped hole 61 and fixes the electrode 3 on the fourth stepped hole 62. Because of high pressure in the geological depth, in order to ensure that the sealing member is not easy to damage when the electrode is deeply measured, the insulating sleeve 2 is formed by injection molding polyether-ether-ketone composite plastic, so that the sealing member has the characteristics of high temperature resistance and high strength, and the electric insulation between the substrate 1 and the electrode 2 can be ensured to be more than 500 megaohms.
Because the space between the electrodes 3 is smaller, the sealing ring 4 of the metric national standard and the metric standard is not easy to be installed on the sealing member, and in order to facilitate the installation of the sealing ring 4, the sealing ring 4 is processed into a small cross section and a non-standard size.
The method for installing the sealing member disclosed by the invention comprises the following steps:
firstly, placing a first sealing ring 41 in a first step hole 51, then placing an insulating sleeve 2 in a base body 1 along a first through hole 11, and fixing the insulating sleeve 2 on a second step hole 52, so that the outer wall of the insulating sleeve 2 is tightly attached to the inner wall of the first through hole 11 on the base body 1, and a first group of sealing and leakage-preventing structures are formed by the first sealing ring 41, the base body 1 and the insulating sleeve 2;
then, the second sealing ring 42 is placed in the third step hole 61, the electrode 3 is placed in the insulating sleeve 2 along the second through hole 21, the electrode 3 is fixed on the fourth step hole 62, the outer wall of the electrode 3 is tightly attached to the inner wall of the second through hole 21 on the insulating sleeve 2, and a second group of sealing and leakage preventing structure is formed by the second sealing ring 42, the insulating sleeve 2 and the electrode 3.
According to the sealing member of the microelectrode and the mounting method thereof, disclosed by the invention, by utilizing the characteristics of the processing technology of the insulating sleeve 2, the two sealing rings 4 respectively form a leakage-proof structure at the outer wall and the inner wall of the insulating sleeve 2, so that the sealing member is not easy to damage under the working conditions of high temperature and high pressure of petroleum geological measuring equipment, and further, the stratum water in the geological depth is not easy to leak into the electrode 3 under high pressure is ensured.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (5)
1. A seal member for a microelectrode, comprising: the sealing member comprises a substrate (1), an insulating sleeve (2), an electrode (3) and a sealing ring (4), wherein the sealing ring (4) comprises a first sealing ring (41) and a second sealing ring (42), a first through hole (11) is formed in the substrate (1), a first double-step hole (5) is formed in the first through hole (11) along the inner wall of the substrate (1), the insulating sleeve (2) is arranged in the first through hole (11), the first sealing ring (41) is arranged in the first double-step hole (5), the first sealing ring (41) is sleeved on the insulating sleeve (2),
offer second through-hole (21) on insulating sleeve (2), and along the inner wall processing of insulating sleeve (2) there is second double-step hole (6) in second through-hole (21), electrode (3) are installed in second through-hole (21), second sealing washer (42) are installed in second double-step hole (6), and second sealing washer (42) cover is on electrode (3), make between base member (1) and insulating sleeve (2) and between insulating sleeve (2) and electrode (3) can form sealed leak protection structure through installing sealing washer (4), and inner wall, insulating sleeve (2), the inner wall and electrode (3) of second through-hole (21) all according to 1:20 is processed into a tight fit taper;
the first double-step hole (5) comprises a first step hole (51) and a second step hole (52) which are connected with each other, the diameter of the second step hole (52) is larger than that of the first step hole (51), the first sealing ring (41) is fixed in the first step hole (51), and the insulating sleeve (2) is fixed in the second step hole (52);
the second double-step hole (6) comprises a third step hole (61) and a fourth step hole (62) which are connected with each other, the diameter of the fourth step hole (62) is larger than that of the third step hole (61), the second sealing ring (42) is fixed in the third step hole (61), and the electrode (3) is fixed in the fourth step hole (62);
the insulating sleeve (2) is made of polyether-ether-ketone composite plastic.
2. A microelectrode sealing member according to claim 1, wherein: a plurality of first through holes (11) are formed in the base body (1), and sealing members consisting of electrodes (3) and insulating sleeves (2) are arranged in the first through holes (11) to form an array.
3. A microelectrode sealing member according to claim 1, wherein: the insulating sleeve (2) is formed by injection molding.
4. A microelectrode sealing member according to claim 1, wherein: the sealing ring (4) is an O-shaped ring.
5. A method for mounting a seal member for a microelectrode according to any one of claims 1 to 4, comprising:
the first sealing ring (41) is placed in the first step hole (51),
placing the insulating sleeve (2) into the base body (1) along the first through hole (11), fixing the insulating sleeve (2) on the second step hole (52), enabling the outer wall of the insulating sleeve (2) to be tightly attached to the inner wall of the first through hole (11) on the base body (1), and forming a first group of sealing and leakage-preventing structures by the first sealing ring (41), the base body (1) and the insulating sleeve (2);
the second sealing ring (42) is placed in the third step hole (61),
the electrode (3) is placed into the insulating sleeve (2) along the second through hole (21), the electrode (3) is fixed on the fourth step hole (62), the outer wall of the electrode (3) is tightly attached to the inner wall of the second through hole (21) on the insulating sleeve (2), and a second sealing ring (42), the insulating sleeve (2) and the electrode (3) form a second group of sealing and leakage-preventing structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710930226.5A CN107489416B (en) | 2017-10-09 | 2017-10-09 | Sealing component of microelectrode and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710930226.5A CN107489416B (en) | 2017-10-09 | 2017-10-09 | Sealing component of microelectrode and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489416A CN107489416A (en) | 2017-12-19 |
| CN107489416B true CN107489416B (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710930226.5A Active CN107489416B (en) | 2017-10-09 | 2017-10-09 | Sealing component of microelectrode and installation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107489416B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847337A (en) * | 2015-04-26 | 2015-08-19 | 山西煤炭进出口集团科技发展有限公司 | Well temperature detection tube for geological drilling |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2180939C1 (en) * | 2000-11-13 | 2002-03-27 | Кривоносов Ростислав Иванович | Device for hermetic sealing of units of down-hole logging instruments |
| CN201041039Y (en) * | 2007-04-03 | 2008-03-26 | 中国石油天然气集团公司 | Microelectrode array for measuring downhole shallow slurry electrical resistivity |
| CN100459302C (en) * | 2007-07-05 | 2009-02-04 | 中航光电科技股份有限公司 | Plug sealing structure of underwater electrical connector contact part |
| WO2014190439A1 (en) * | 2013-05-31 | 2014-12-04 | Evolution Engineering Inc. | Downhole pocket electronics |
| CN203848883U (en) * | 2014-05-14 | 2014-09-24 | 山东飞龙仪表有限公司 | Electromagnetic flow transducer with electrodes sealed in multi-stage mode |
| CN203953811U (en) * | 2014-05-20 | 2014-11-26 | 杨斌 | External knock wave clearance adjustable type electrode |
| CN204346542U (en) * | 2014-09-11 | 2015-05-20 | 秦皇岛联能科技开发有限公司 | Split type electric-contact electrode sensor |
| US9989665B2 (en) * | 2015-04-29 | 2018-06-05 | Schlumberger Technology Corporation | Wear resistant electrodes for downhole imaging |
| CN204609862U (en) * | 2015-05-11 | 2015-09-02 | 中国海洋石油总公司 | Lateralog |
| CN207554035U (en) * | 2017-10-09 | 2018-06-29 | 吴尽生 | A kind of containment member of microelectrode |
-
2017
- 2017-10-09 CN CN201710930226.5A patent/CN107489416B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847337A (en) * | 2015-04-26 | 2015-08-19 | 山西煤炭进出口集团科技发展有限公司 | Well temperature detection tube for geological drilling |
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| Publication number | Publication date |
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| CN107489416A (en) | 2017-12-19 |
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