CN115596431A - Logging-while-drilling instrument with automatic pressure relief structure - Google Patents
Logging-while-drilling instrument with automatic pressure relief structure Download PDFInfo
- Publication number
- CN115596431A CN115596431A CN202211390837.2A CN202211390837A CN115596431A CN 115596431 A CN115596431 A CN 115596431A CN 202211390837 A CN202211390837 A CN 202211390837A CN 115596431 A CN115596431 A CN 115596431A
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- hollow shell
- piston plate
- pressure relief
- hollow
- inner cavity
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- 238000005553 drilling Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 239000011435 rock Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Images
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
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Remote Sensing (AREA)
- Measuring Fluid Pressure (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a logging-while-drilling instrument with an automatic pressure relief structure, which comprises a hollow shell and a pressure relief unit. According to the invention, a sealed environment is formed between the lower end of the first piston plate and the hollow shell, under the state of high external temperature, gas or sealing oil between the lower end of the first piston plate and the hollow shell expands and pushes the first piston plate to slide upwards along the hollow shell to compress the first spring, so that the pressure of the interior between the hollow shell and the first piston plate is relieved, meanwhile, the first spring pushes the first piston plate to move upwards to compress the second spring, and gas above the second piston plate is communicated with the outside through the pressure relief hole and a gap between the baffle plate and the hollow shell to relieve the pressure, so that the normal operation of internal electrical equipment elements is prevented from being influenced, and the service life is long.
Description
Technical Field
The invention relates to the technical field of logging-while-drilling instruments, in particular to a logging-while-drilling instrument with an automatic pressure relief structure.
Background
In the process of petroleum drilling, a logging-while-drilling instrument is generally used and is arranged on a drill bit, so that the drill bit can grow up to 'eyes', and can obtain stratum data while drilling, and then the track of the drill bit is timely adjusted by using the measured drilling parameters and stratum parameters, so that the drill bit can drill along the direction of a target stratum.
Because the logging-while-drilling instrument works in a high-temperature and high-pressure environment and the logging-while-drilling instrument is of a sealing structure so as to protect internal components, the internal pressure can be increased in the using process, but the internal components can be damaged by the overhigh pressure in the using process of the conventional logging-while-drilling instrument; also have and set up pressure relief structure, but pressure relief structure is relatively poor with external environment's isolation effect, and outside moisture and foreign matter can enter into the inside normal work that influences electrical components of casing, influence the life of self.
Disclosure of Invention
In order to effectively solve the problems in the background art, the invention provides the following technical scheme: a logging-while-drilling instrument with an automatic pressure relief structure comprises a hollow shell and a pressure relief unit;
the two ends of the hollow shell are respectively provided with a connecting sleeve, the lower end of the hollow inner cavity of the hollow shell is provided with a natural gamma sensor and a battery, the middle part of the hollow inner cavity of the hollow shell is provided with a controller and a wireless data transmitter, the output ends of the natural gamma sensor and the battery are electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the wireless data transmitter;
the pressure relief unit comprises a first piston plate and a positioning ring, the positioning ring is arranged at the upper end of the hollow inner cavity of the hollow shell, and the first piston plate is arranged in the hollow inner cavity of the hollow shell in an axially sliding manner and is positioned above the positioning ring;
the pressure relief unit further comprises a first spring, a second piston plate and a second spring, the second piston plate is arranged in the hollow cavity of the hollow shell in an axial sliding mode and is located above the first piston plate, the first spring is movably sleeved in the hollow cavity of the hollow shell and is located between the first piston plate and the second piston plate, and the second spring is movably sleeved in the hollow cavity of the hollow shell and is located between the second piston plate and the upper end portion of the hollow shell;
the pressure relief unit further comprises an annular plate and a pressure relief hole, the annular plate is arranged at the upper end of the hollow inner cavity of the hollow shell and located above the second spring, and the pressure relief hole is formed in the annular plate in the axial direction.
Wherein: and a first sealing ring is arranged between the inner cambered surfaces of the first piston plate and the second piston plate and the hollow shell, and a second sealing ring is arranged between the outer cambered surfaces of the first piston plate and the second piston plate and the hollow shell.
Wherein: the outer cambered surface of cavity casing is provided with the through-hole, the cavity inner chamber activity joint of cavity casing has the correspondence the filter screen of through-hole, the inboard of filter screen is provided with and is located the filtration cotton of pressure release hole top filters outside mud through filter screen and filtration cotton.
Wherein: the lateral surface of filter screen is equipped with evenly distributed's connecting strip, the lateral surface of connecting strip is connected with the correspondence the baffle of through-hole protects the filter screen.
Wherein: the lower end of the baffle is connected to the outer arc surface of the hollow shell through a fixing screw.
Compared with the prior art, the invention has the beneficial effects that:
because a sealed environment is formed between the lower end of the first piston plate and the hollow shell, under the state of high temperature outside, gas or sealing oil between the lower end of the first piston plate and the hollow shell expands and pushes the first piston plate to slide upwards along the hollow shell to compress the first spring, so that the pressure of the inside between the hollow shell and the first piston plate is relieved, meanwhile, the first spring pushes the second piston plate to move upwards to compress the second spring, and gas above the second piston plate is communicated with the outside through a pressure relief hole and a gap between the baffle and the hollow shell to relieve the pressure, so that the normal operation of internal electrical elements is prevented from being influenced, and the service life is long.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is an enlarged schematic view of the structure of the present invention at A.
In the figure: 1. the device comprises a hollow shell, 2 natural gamma sensors, 3 batteries, 4 controllers, 5 wireless data transmitters, 6 pressure relief units, 61 piston plates I, 62 springs I, 63 positioning rings, 64 annular plates, 65 pressure relief holes, 66 piston plates II, 67 springs II, 7 filter screens, 8 filter cotton, 9 baffles, 10 connecting strips, 11 fixing screws, 12 connecting sleeves, 13 sealing rings I and 14 sealing rings II.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-3, the logging-while-drilling tool with an automatic pressure relief structure according to the present embodiment includes a hollow casing 1 and a pressure relief unit 6; the both ends of cavity casing 1 all are equipped with adapter sleeve 12, and the cavity inner chamber lower extreme of cavity casing 1 is equipped with natural gamma sensor 2 and battery 3, and the cavity inner chamber middle part of cavity casing 1 is equipped with controller 4 and wireless data transmitter 5, and the output of natural gamma sensor 2 and battery 3 all is connected the input of controller 4 electricity, and the output electricity of controller 4 is connected to the input of wireless data transmitter 5.
Wherein: the pressure relief unit 6 comprises a first piston plate 61 and a positioning ring 63, the positioning ring 63 is arranged at the upper end of the hollow inner cavity of the hollow shell 1, and the first piston plate 61 is arranged in the hollow inner cavity of the hollow shell 1 in an axially sliding manner and is positioned above the positioning ring 63; the piston plate II 66 is arranged in a hollow inner cavity of the hollow shell 1 in a sliding mode along the axial direction and located above the piston plate I61, the spring I62 is movably sleeved in the hollow inner cavity of the hollow shell 1 and located between the piston plate I61 and the piston plate II 66, the spring II 67 is movably sleeved in the hollow inner cavity of the hollow shell 1 and located between the piston plate II 66 and the upper end portion of the hollow shell 1, a sealing ring I13 is arranged between the inner arc surfaces of the piston plate I61 and the piston plate II 66 and the hollow shell 1, and a sealing ring II 14 is arranged between the outer arc surfaces of the piston plate I61 and the piston plate II 66 and the hollow shell 1; the hollow shell further comprises an annular plate 64 and a pressure relief hole 65, the annular plate 64 is arranged at the upper end of the hollow inner cavity of the hollow shell 1 and is located above the second spring 67, and the pressure relief hole 65 is formed in the annular plate 64 in the axial direction.
Wherein: the outer arc surface of the hollow shell 1 is provided with a through hole, a filter screen 7 corresponding to the through hole is movably clamped in the hollow inner cavity of the hollow shell 1, filter cotton 8 positioned above the pressure relief hole 65 is arranged on the inner side of the filter screen 7, and external slurry is filtered through the filter screen and the filter cotton; the outer side surface of the filter screen 7 is provided with evenly distributed connecting strips 10, and the outer side surface of each connecting strip 10 is connected with a baffle 9 corresponding to the through hole to protect the filter screen; the lower end of the baffle 9 is connected to the outer arc surface of the hollow shell 1 by a fixing screw 11.
The working principle of the invention is as follows:
when the device is used, the device is arranged in a drill rod through the threads of the connecting sleeve 12, in the drilling process, natural gamma rays from a rock stratum penetrate through slurry in a well and the hollow shell 1 to enter the natural gamma sensor 2 detector, the natural gamma sensor 2 detector converts a series of received gamma rays into individual electric pulses, the electric pulses are transmitted to the controller 4, the controller 4 transmits the electric pulse signals to the ground instrument through electromagnetic wave signals of the wireless data transmitter 5, and after the ground instrument receives the electric signals transmitted from the well, the natural gamma intensity curve of the rock stratum on the well section is continuously recorded after processing, namely the natural gamma logging curve, so that the state of the rock stratum of a well wall can be conveniently known;
in the working process, a sealed environment is formed between the hollow cavity of the hollow shell 1 and the first piston plate 61, and when the piston plate is in an external high position state, gas or sealing oil between the lower end of the first piston plate 61 and the hollow shell 1 expands to push the first piston plate 61 to slide upwards along the hollow shell 1 to compress the first spring 62, so that the space between the lower end of the first piston plate 61 and the hollow shell 1 is decompressed; meanwhile, the first spring 62 pushes the second piston plate 66 to move upwards to compress the second spring 67, so that the air above the second piston plate 66 is communicated with the outside through the pressure relief hole 65 and the gap between the baffle 9 and the hollow shell 1 to be relieved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A logging-while-drilling instrument with an automatic pressure relief structure is characterized in that: comprises a hollow shell (1) and a pressure relief unit (6);
the two ends of the hollow shell (1) are respectively provided with a connecting sleeve (12), the lower end of the hollow inner cavity of the hollow shell (1) is provided with a natural gamma sensor (2) and a battery (3), the middle part of the hollow inner cavity of the hollow shell (1) is provided with a controller (4) and a wireless data transmitter (5), the output ends of the natural gamma sensor (2) and the battery (3) are respectively and electrically connected to the input end of the controller (4), and the output end of the controller (4) is electrically connected to the input end of the wireless data transmitter (5);
the pressure relief unit (6) comprises a first piston plate (61) and a positioning ring (63), the positioning ring (63) is arranged at the upper end of the hollow inner cavity of the hollow shell (1), and the first piston plate (61) is axially slidably arranged in the hollow inner cavity of the hollow shell (1) and is positioned above the positioning ring (63);
the pressure relief unit (6) further comprises a first spring (62), a second piston plate (66) and a second spring (67), the second piston plate (66) is arranged in the hollow inner cavity of the hollow shell (1) in an axially sliding mode and located above the first piston plate (61), the first spring (62) is movably sleeved in the hollow inner cavity of the hollow shell (1) and located between the first piston plate (61) and the second piston plate (66), and the second spring (67) is movably sleeved in the hollow inner cavity of the hollow shell (1) and located between the second piston plate (66) and the upper end portion of the hollow shell (1);
the pressure relief unit (6) further comprises an annular plate (64) and a pressure relief hole (65), the annular plate (64) is arranged at the upper end of the hollow inner cavity of the hollow shell (1) and located above the second spring (67), and the pressure relief hole (65) is axially formed in the annular plate (64).
2. The logging-while-drilling tool with an automatic pressure relief structure as recited in claim 1, wherein: and a first sealing ring (13) is arranged between the inner arc surfaces of the first piston plate (61) and the second piston plate (66) and the hollow shell (1), and a second sealing ring (14) is arranged between the outer arc surfaces of the first piston plate (61) and the second piston plate (66) and the hollow shell (1).
3. The logging-while-drilling tool with an automatic pressure relief structure as recited in claim 1, wherein: the extrados of cavity casing (1) is provided with the through-hole, the activity joint of cavity inner chamber of cavity casing (1) has the correspondence filter screen (7) of through-hole, the inboard of filter screen (7) is provided with and is located filter pulp (8) of pressure release hole (65) top.
4. The logging-while-drilling tool with an automatic pressure relief structure as recited in claim 3, wherein: the lateral surface of filter screen (7) is equipped with evenly distributed's connecting strip (10), the lateral surface of connecting strip (10) is connected with correspondingly baffle (9) of through-hole.
5. The logging-while-drilling tool with an automatic pressure relief structure as recited in claim 4, wherein: the lower end of the baffle plate (9) is connected to the outer arc surface of the hollow shell (1) through a fixing screw (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211390837.2A CN115596431B (en) | 2022-11-07 | 2022-11-07 | Logging while drilling instrument with automatic pressure relief structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211390837.2A CN115596431B (en) | 2022-11-07 | 2022-11-07 | Logging while drilling instrument with automatic pressure relief structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115596431A true CN115596431A (en) | 2023-01-13 |
| CN115596431B CN115596431B (en) | 2024-09-06 |
Family
ID=84853749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211390837.2A Active CN115596431B (en) | 2022-11-07 | 2022-11-07 | Logging while drilling instrument with automatic pressure relief structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115596431B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6051332A (en) * | 1997-05-02 | 2000-04-18 | Alctael | Valve cap for an electric storage cell |
| CN200985772Y (en) * | 2006-12-18 | 2007-12-05 | 辽河石油勘探局 | Double-walled well drilling single flow valve |
| CN101892834A (en) * | 2010-08-20 | 2010-11-24 | 大庆石油管理局 | Pressure balance type tank in formation pressure tester-during-drilling tool |
| CN203271720U (en) * | 2013-05-29 | 2013-11-06 | 中国石油集团长城钻探工程有限公司 | Outward relief type pressure relief system for well logging |
| CN105888625A (en) * | 2016-06-22 | 2016-08-24 | 西安石油大学 | Piston-spring type perforating gun expansion prevention and protection device |
| CN207177887U (en) * | 2017-08-31 | 2018-04-03 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of wireless drilling inclinometers battery sleeve safe pressure relief device |
| CN209016169U (en) * | 2018-11-07 | 2019-06-21 | 天津力神电池股份有限公司 | A kind of automatic pressure reducing valve of lithium ion battery |
| CN110656931A (en) * | 2019-07-02 | 2020-01-07 | 中煤科工集团西安研究院有限公司 | Mining hydraulic drilling-following aperture measuring device and method |
| CN113847017A (en) * | 2021-09-28 | 2021-12-28 | 西南石油大学 | Pressure pulse while-drilling communication system and method suitable for gas drilling |
| CN114094248A (en) * | 2021-12-02 | 2022-02-25 | 湖南宝特瑞能新能源有限责任公司 | Explosion-proof battery cap |
| US20220333706A1 (en) * | 2020-08-31 | 2022-10-20 | Contemporary Amperex Technology Co., Limited | Bidirectional pressure relief valve, battery and electric device |
-
2022
- 2022-11-07 CN CN202211390837.2A patent/CN115596431B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6051332A (en) * | 1997-05-02 | 2000-04-18 | Alctael | Valve cap for an electric storage cell |
| CN200985772Y (en) * | 2006-12-18 | 2007-12-05 | 辽河石油勘探局 | Double-walled well drilling single flow valve |
| CN101892834A (en) * | 2010-08-20 | 2010-11-24 | 大庆石油管理局 | Pressure balance type tank in formation pressure tester-during-drilling tool |
| CN203271720U (en) * | 2013-05-29 | 2013-11-06 | 中国石油集团长城钻探工程有限公司 | Outward relief type pressure relief system for well logging |
| CN105888625A (en) * | 2016-06-22 | 2016-08-24 | 西安石油大学 | Piston-spring type perforating gun expansion prevention and protection device |
| CN207177887U (en) * | 2017-08-31 | 2018-04-03 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of wireless drilling inclinometers battery sleeve safe pressure relief device |
| CN209016169U (en) * | 2018-11-07 | 2019-06-21 | 天津力神电池股份有限公司 | A kind of automatic pressure reducing valve of lithium ion battery |
| CN110656931A (en) * | 2019-07-02 | 2020-01-07 | 中煤科工集团西安研究院有限公司 | Mining hydraulic drilling-following aperture measuring device and method |
| US20220333706A1 (en) * | 2020-08-31 | 2022-10-20 | Contemporary Amperex Technology Co., Limited | Bidirectional pressure relief valve, battery and electric device |
| CN113847017A (en) * | 2021-09-28 | 2021-12-28 | 西南石油大学 | Pressure pulse while-drilling communication system and method suitable for gas drilling |
| CN114094248A (en) * | 2021-12-02 | 2022-02-25 | 湖南宝特瑞能新能源有限责任公司 | Explosion-proof battery cap |
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| Publication number | Publication date |
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| CN115596431B (en) | 2024-09-06 |
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