CN111779472A - Sealing pressure-bearing assembly, logging-while-drilling instrument and assembling method of logging-while-drilling instrument - Google Patents
Sealing pressure-bearing assembly, logging-while-drilling instrument and assembling method of logging-while-drilling instrument Download PDFInfo
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- CN111779472A CN111779472A CN202010721365.9A CN202010721365A CN111779472A CN 111779472 A CN111779472 A CN 111779472A CN 202010721365 A CN202010721365 A CN 202010721365A CN 111779472 A CN111779472 A CN 111779472A
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- 238000005553 drilling Methods 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000012535 impurity Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000001503 joint Anatomy 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
- 230000001681 protective effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling And Boring (AREA)
Abstract
The application discloses sealed pressure-bearing subassembly, along with boring the assembly method of logging instrument and along with boring the logging instrument, sealed pressure-bearing subassembly sets up to install on the drill collar base member, including pressure-bearing plug and connector socket, the one end of connector socket is connected on the circuit skeleton of drill collar base member, the other end of connector socket with pressure-bearing plug connection, the circumference of pressure-bearing plug is provided with the first seal structure that is used for with the contact of drill collar base member. The logging-while-drilling instrument comprises a drill collar substrate, a circuit framework and the sealing pressure-bearing assembly, wherein the circuit framework is arranged in the drill collar substrate, the sealing pressure-bearing assembly is arranged on the drill collar substrate, and the sealing pressure-bearing assembly penetrates through the data port and is connected to the circuit framework. The assembling method of the logging-while-drilling tool is used for the logging-while-drilling tool.
Description
Technical Field
The application relates to the field of well logging instruments, in particular to a sealed pressure-bearing assembly, a logging-while-drilling instrument and an assembling method of the logging-while-drilling instrument.
Background
The logging modes in the petroleum logging industry include wireline logging and logging while drilling. For the cable logging, data are transmitted by a cable, the transmission speed is high, and the data can be analyzed in real time on site. For logging while drilling, the real-time transmission data volume is limited due to the limitation of the data decoding technology. Generally, only some basic data is transmitted in real time to meet the basic operation requirements. When the formation data needs to be analyzed in detail, various logging-while-drilling instruments can store the real-time formation data into a memory arranged in the instruments. When the drilling-while-drilling instrument performs the tripping operation, the underground formation data stored by the instrument is read through the data port of the instrument.
However, in this data reading mode, external impurities may enter the drill collar during reading, and damage may be caused to the internal circuit skeleton.
Disclosure of Invention
The embodiment of the application provides a sealed pressure-bearing assembly, a logging-while-drilling instrument and an assembling method of the logging-while-drilling instrument, which can safely read data during tripping operation and prevent a circuit framework from being damaged.
The embodiment of the application provides a sealed pressure-bearing assembly, sets up to installing on the drill collar base member, and sealed pressure-bearing assembly includes pressure-bearing plug and connector socket, the one end of connector socket is connected on the circuit skeleton of drill collar base member, the other end of connector socket with pressure-bearing plug connection, be provided with the first seal structure that is used for with the contact of drill collar base member in the circumference of pressure-bearing plug.
The embodiment of the application also provides a logging-while-drilling instrument, which comprises a drill collar substrate, a circuit framework arranged in the drill collar substrate and the sealing pressure-bearing assembly,
the drill collar substrate is provided with a data port, and the sealing pressure-bearing assembly penetrates through the data port to be connected to the circuit framework.
The embodiment of the application also provides an assembling method of the logging-while-drilling instrument, which is used for the logging-while-drilling instrument and comprises the following steps:
the connector socket is arranged at the installation position on the circuit framework and is fixed through the fixing baffle;
assembling the road framework to a data port of the drill collar substrate;
the first sealing structure is arranged on the pressure-bearing plug;
the pressure-bearing plug is butted with the connector socket;
and a waterproof plug is arranged at the data port of the drill collar base body.
Compared with some technologies, the method has the following beneficial effects:
the sealed pressure-bearing assembly provided by the embodiment of the application has a good protective effect on an internal circuit framework, and when a data rod is inserted into a data port to read data, impurities such as slurry attached to the surface of a drill collar can not enter the circuit framework through the data port, so that an internal circuit is prevented from being short-circuited, and normal data reading and drilling work are prevented from being influenced. In addition, the sealed pressure-bearing assembly provided by the embodiment can also play a sealing role on a data port to protect an internal circuit framework when the logging instrument works underground.
The logging-while-drilling instrument provided by the embodiment of the application comprises the sealing pressure-bearing assembly, and when data are read and the logging-while-drilling instrument works underground, the good sealing protection effect can be achieved on the internal circuit framework and other structures, and the logging-while-drilling instrument is prevented from being damaged due to the fact that impurities such as mud enter the drill collar.
According to the assembling method of the logging-while-drilling instrument, the sealing pressure-bearing assembly can be reliably installed in the logging-while-drilling instrument, and data reading and logging work of the subsequent logging-while-drilling instrument are facilitated.
Other features and advantages of the present application will be set forth in the description that follows.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
Fig. 1 is a schematic structural diagram of a pressure-bearing plug according to a first embodiment of the present application;
fig. 2 is a schematic structural diagram of a connector receptacle according to a first embodiment of the present application;
fig. 3 is a schematic structural diagram of a fixing baffle according to a first embodiment of the present application;
FIG. 4 is a schematic structural diagram of a logging-while-drilling tool according to a second embodiment of the present disclosure;
fig. 5 is a schematic flow chart of an assembling method of a logging-while-drilling tool according to a third embodiment of the present application.
Illustration of the drawings:
1-bearing plug, 11-bearing base body, 111-mounting part, 112-guide part, 12-plug male pin, 13-sealing groove, 2-connector socket, 21-connector base body, 211-fixing wing, 212-wiring groove, 213-guide groove, 214-female pin, 3-fixing baffle, 31-abdicating hole, 32-fixing groove, 33-fixing hole, 4-waterproof plug, 51-first sealing structure, 52-second sealing structure, 61-first orientation groove, 62-second orientation groove, 63-first guide groove, 64-second guide groove, 65-first guide part, 66-second guide part, 67-first retainer ring, 68-second retainer ring, 7-drill collar base body, 71-circuit skeleton, 72-data port.
Detailed Description
To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
In actual operation, due to the complex wellhead environment of the drill floor, drilling fluid, mud or other impurities attached to the drill collar are likely to enter the data port along the drill collar shell in the process that the data rod is connected with the data port of the drill collar. The short circuit of the internal circuit of the logging instrument in the process of reading data or re-drilling is caused, and the normal data reading and logging work of the logging instrument are endangered.
Example one
The embodiment of the application provides a sealed pressure-bearing assembly, as shown in fig. 1 to 3, the sealed pressure-bearing assembly is arranged to be installed on a drill collar substrate 7, the sealed pressure-bearing assembly comprises a pressure-bearing plug 1 and a connector socket 2, one end of the connector socket 2 is connected to a circuit framework 71 of the drill collar substrate 7, the other end of the connector socket 2 is connected with the pressure-bearing plug 1, and a first sealing structure 51 used for being in contact with the drill collar substrate 7 is arranged on the circumferential direction of the pressure-bearing plug 1.
The connector socket 2 is installed on the circuit framework 71 and used for being connected with the pressure-bearing plug 1, one end of the pressure-bearing plug 1 is inserted into the connector socket 2, the other end of the pressure-bearing plug 1 is used for being connected with a data rod, and therefore an operator (utilizing other equipment) can read data conveniently. The first sealing structure 51 is arranged on the circumferential direction of the pressure-bearing plug 1, so that the pressure-bearing waterproof effect can be achieved, in the data reading process, impurities such as drilling fluid on the surface of the drill collar can be blocked by the pressure-bearing plug 1 and cannot enter the circuit framework 71 inside the drill collar, and the safety of an internal circuit is effectively protected. The first seal 51 may be an O-ring seal.
In an exemplary embodiment, as shown in fig. 1, the pressure-bearing plug 1 includes a pressure-bearing base body 11, a mounting portion 111 disposed above the pressure-bearing base body 11, and a guide portion 112 disposed below the pressure-bearing base body 11, a plug male pin 12 for data transmission is disposed in the pressure-bearing base body 11, a sealing groove 13 is disposed on a circumferential surface of the pressure-bearing base body 11, and a first sealing structure 51 is mounted in the sealing groove 13.
A mounting portion 111 above the pressure-bearing base 11 for connecting with a data bar; the guide part 112 below the pressure-bearing plug 1 is used for being inserted into the connector socket 2, and the guide part 112 enables the angle of the pressure-bearing plug 1 inserted into the connector socket 2 to be accurate, so that the insertion position of the plug male pin 12 is accurate, and the plug male pin 12 is prevented from being damaged.
The outer circumference of the upper part of the pressure-bearing substrate 11 can be provided with external threads, so that the pressure-bearing plug 1 can be conveniently disassembled and assembled by using a special tool.
In an exemplary embodiment, as shown in fig. 1, the guiding portion 112 is a circular arc segment on the circumferential surface of the pressure-bearing substrate 11, the guiding portion 112 includes a first guiding portion 65 and a second guiding portion 66, the central angles of the first guiding portion 65 and the second guiding portion 66 are different (i.e. the widths of the first guiding portion 65 and the second guiding portion 66 are different), so as to prevent the pressure-bearing plug 1 from being inserted reversely when being inserted into the connector socket 2, and ensure that the first guiding portion 65 and the second guiding portion 66 are accurately inserted into the first guiding groove 63 and the second guiding groove 64, respectively.
In an exemplary embodiment, as shown in fig. 1, the lower end surface of the plug pin 12 is located higher than the lower end surface of the guide portion 112.
Namely: the male plug pin 12 is recessed in the guide portion 112, and when the pressure-bearing plug 1 is assembled with the connector socket 2, the guide portion 112 is first inserted into the connector socket 2 for guiding, and then the male plug pin 12 contacts with the connector socket 2. Under the guiding action of the guiding portion 112, the male pin 12 of the plug is ensured to be aligned with the corresponding position (i.e. the female pin 214) on the connector socket 2.
In an exemplary embodiment, as shown in fig. 1, the mounting portion 111 is an opening on the circumferential surface of the pressure-bearing substrate 11, the mounting portion 111 includes a first orientation groove 61 and a second orientation groove 62, and the first orientation groove 61 and the second orientation groove 62 have different widths.
The mounting portion 111 is provided as an opening on the circumferential surface of the pressure receiving base 11, and the opening is connected to the data rod. The installation part 111 comprises a first orientation groove 61 and a second orientation groove 62, the width of the first orientation groove 61 is different from that of the second orientation groove 62, and when the installation part 111 is inserted into a data rod, the data rod cannot be reversely installed, and the pressure-bearing plug 1 is prevented from being damaged. The included angle between the first orientation groove 61 and the second orientation groove 62 and the central axis of the pressure-bearing substrate 11 can be set to be less than 90 degrees, and the data bar can be prevented from being installed reversely when being inserted into the installation part 111.
In an exemplary embodiment, as shown in fig. 2, the connector receptacle 2 includes a connector base 21, and a fixing wing 211, a routing groove 212 and a guide groove 213 which are arranged on the circumference of the connector base 21, a female pin 214 which is matched with the male plug pin 12 is arranged on the connector base 21, the connector base 21 is mounted on the circuit framework 71 through the fixing wing 211, the routing groove 212 is hollow inside and is used for accommodating a cable led out by the female pin 214, and the guide groove 213 is arranged corresponding to the guide part 112 so that the guide part 112 is inserted into the guide groove 213. The sealing pressure-bearing assembly further comprises a fixing baffle plate 3, the fixing baffle plate 3 is abutted against the connector socket 2, and the connector socket 2 is installed on the circuit framework 71.
The male pin of the pressure-bearing plug 1 is inserted into the female pin 214 on the connector base body 21; the fixing baffle 3 is used for fixedly mounting the connector base body 21 on the circuit framework 71 by abutting against the fixing wings 211 on the circumference of the connector base body 21; the cable (cable connecting the connector receptacle 2 and the circuit skeleton 71) led out from the female pin 214 is accommodated in the wiring groove 212. The number of the male pins 12 and the female pins 214 of the plug can be set to 7, and of course, other numbers can be set according to actual needs.
In an exemplary embodiment, as shown in fig. 3, the fixing baffle 3 is provided with a relief hole 31, a fixing groove 32 and a fixing hole 33, and the connector base 21 passes through the relief hole 31; the fixing wings 211 are snapped into the fixing grooves 32, so that the connector receptacle 2 is limited by the fixing baffle 3; the fixing baffle 3 is mounted on the circuit frame 71 by a fastener passing through the fixing hole 33.
The fixed baffle 3 is provided with a abdication hole 31, so that the fixed baffle 3 can be conveniently sleeved on the connecting base body; fixing holes 33 are formed in two sides of the fixing baffle 3, and fasteners (such as screws) are inserted into the fixing holes 33 to fix the fixing baffle 3 on the circuit framework 71; the fixing plate 3 is further provided with a fixing groove 32, and the fixing groove 32 is used for clamping the fixing wing 211, so that the connector socket 2 is limited and fixed.
The width of the fixing groove 32 may be slightly larger than that of the fixing wing 211, so that the fixing groove 32 can be smoothly snapped into during assembly. And, both side surfaces of the fixed wing 211 may be provided with slopes (the inclination angle may be 15 ° -20 °) for easy assembly.
Example two
The embodiment of the application provides a logging-while-drilling instrument, as shown in fig. 4, the logging-while-drilling instrument comprises a drill collar substrate 7, a circuit framework 71 arranged inside the drill collar substrate 7 and the sealing pressure-bearing assembly, wherein a data port 72 is arranged on the drill collar substrate 7, and the sealing pressure-bearing assembly penetrates through the data port 72 and is connected to the circuit framework 71.
According to the logging-while-drilling instrument provided by the embodiment of the application, the circuit framework 71 is installed in the drill collar substrate 7, the sealing pressure-bearing assembly is installed at the data port 72 of the drill collar substrate 7, and when data are read and the drilling tool works underground, the sealing pressure-bearing assembly can play a good sealing protection role on the internal circuit framework 71 and other structures, and prevents impurities such as mud and the like from entering the drill collar to damage the logging instrument.
In an exemplary embodiment, as shown in fig. 4, the logging-while-drilling tool further comprises a waterproof plug 4, the waterproof plug 4 is installed outside the pressure-bearing plug 1, and a second sealing structure 52 for contacting with the drill collar base 7 is arranged on the periphery of the waterproof plug 4.
The drill collar substrate 7 of the logging-while-drilling instrument is also provided with a waterproof plug 4, a second sealing structure 52 is arranged on the periphery of the waterproof plug 4, and when the logging-while-drilling instrument works underground, the waterproof plug 4 plays a role in sealing, resisting water and bearing pressure for the pressure-bearing plug 1, the circuit framework 71 inside the pressure-bearing plug 1 and the like, so that components inside the instrument are protected. The second seal structure 52 may be an O-ring seal.
A first retainer ring 67 is further installed in the data port 72 of the drill collar, and the first retainer ring 67 abuts against the upper surface of the pressure-bearing plug 1 to limit and fix the pressure-bearing plug 1. And a second retainer ring 68 is also arranged in the data port 72 of the drill collar, and the second retainer ring 68 abuts against the upper surface of the waterproof plug 4 to limit and fix the waterproof plug 4.
EXAMPLE III
The embodiment of the application provides an assembling method of a logging-while-drilling tool, as shown in fig. 5, the assembling method is used for the logging-while-drilling tool, and comprises the following steps:
the connector socket 2 is arranged at the installation position on the circuit framework 71, and the connector socket 2 is fixed through the fixing baffle 3;
assembling the road framework to the data port 72 of the drill collar base body 7;
the first sealing structure 51 is mounted on the pressure-bearing plug 1;
the pressure-bearing plug 1 is butted with the connector socket 2;
and a waterproof plug 4 is arranged at the data port 72 of the drill collar base body 7.
When the logging-while-drilling instrument is assembled, the connector socket is firstly placed at the installation position on the circuit framework, the fixing wings at two sides of the connector socket are clamped by the fixing grooves at two sides of the fixing baffle plate, and the connector socket is limited and fixed (because the fixing grooves are slightly larger than the width of the fixing wings, the actual connector socket can move in a certain range); the cables in the wiring grooves are straightened out, so that the cables are prevented from being damaged by extrusion; then, screws penetrate through the fixing holes, and the fixing baffle is installed on the circuit framework; and assembling the circuit framework to a data port in the drill collar.
Then, the first sealing structure is installed in a sealing groove of the pressure-bearing plug, a special tool is connected to an installation part of the pressure-bearing plug, the pressure-bearing plug is in butt joint with a connector socket, and meanwhile, the guide part is inserted into the guide groove firstly, so that the plug male pin can smoothly enter the female pin; then a first check ring is arranged to fix the pressure-bearing joint; then installing a waterproof plug with a second sealing structure in a data port of the drill collar; and finally, a second check ring is installed to limit the waterproof plug.
The installation method provided by the embodiment of the application is safe and reliable, components such as the male pin of the plug cannot be damaged in the installation process, and the safety of all the components in the installation process is guaranteed.
In the description of the present application, it should be noted that the directions or positional relationships indicated by "upper", "lower", "left", "right", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, and do not indicate or imply that the structures referred to have a specific direction, are configured and operated in a specific direction, and thus, cannot be understood as limiting the present application.
In the description of the embodiments of the present application, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "assembled" are to be construed broadly, e.g., the term "connected" may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The embodiments described herein are exemplary rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements that have been disclosed in this application may also be combined with any conventional features or elements to form unique aspects as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other aspects to form another unique aspect as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Claims (10)
1. A sealed pressure-bearing assembly is arranged to be installed on a drill collar substrate and is characterized by comprising a pressure-bearing plug and a connector socket, wherein one end of the connector socket is connected to a circuit framework of the drill collar substrate, the other end of the connector socket is connected with the pressure-bearing plug, and a first sealing structure used for being in contact with the drill collar substrate is arranged on the circumference of the pressure-bearing plug.
2. The sealed pressure bearing assembly of claim 1, wherein said pressure bearing plug includes a pressure bearing substrate, and a mounting portion disposed above said pressure bearing substrate and a guide portion disposed below said pressure bearing substrate,
the pressure-bearing base body is internally provided with a male plug needle for data transmission, the circumferential surface of the pressure-bearing base body is provided with a sealing groove, and the first sealing structure is arranged in the sealing groove.
3. The seal bearing assembly of claim 2 wherein the plug pin lower end surface is at a higher position than the guide portion lower end surface.
4. A sealed pressure-containing assembly according to claim 2, wherein the mounting portion is an opening in the circumferential surface of the pressure-containing substrate,
the installation part comprises a first orientation groove and a second orientation groove, and the width of the first orientation groove is different from that of the second orientation groove.
5. The pressure-bearing assembly according to claim 2, wherein the connector socket comprises a connector base body, and a fixing wing, a wiring groove and a guide groove arranged on the circumference of the connector base body, a female pin matched with the male pin of the plug is arranged on the connector base body,
the connector base body passes through the stationary vane is installed on the circuit skeleton, the trough is used for holding the cable that female needle was drawn forth, the guide part inserts in the guide way.
6. The sealed pressure bearing assembly of claim 5 further comprising a retainer plate against said connector socket to mount said connector socket on said circuit frame.
7. The seal pressure-bearing assembly according to claim 6, characterized in that the fixing baffle is provided with a relief hole, a fixing groove and a fixing hole,
the connector base body penetrates through the abdicating hole; the fixing wings are clamped in the fixing grooves, so that the connector socket is limited by the fixing baffle; and the fastener penetrates through the fixing hole to install the fixing baffle on the circuit framework.
8. A logging-while-drilling instrument comprising a drill collar substrate and a circuit framework arranged inside the drill collar substrate, characterized by further comprising a sealed pressure-bearing assembly as claimed in any one of claims 1 to 7,
the drill collar substrate is provided with a data port, and the sealing pressure-bearing assembly penetrates through the data port to be connected to the circuit framework.
9. The logging-while-drilling tool of claim 8, further comprising a waterproof plug mounted outside the pressure-bearing plug,
and a second sealing structure used for being in contact with the drill collar substrate is arranged in the circumferential direction of the waterproof plug.
10. A method of assembling a logging-while-drilling tool as recited in claim 9, comprising the steps of:
the connector socket is arranged at the installation position on the circuit framework and is fixed through the fixing baffle;
assembling the circuit framework to a data port of the drill collar substrate;
the first sealing structure is arranged on the pressure-bearing plug;
the pressure-bearing plug is butted with the connector socket;
and a waterproof plug is arranged at the data port of the drill collar base body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721365.9A CN111779472A (en) | 2020-07-24 | 2020-07-24 | Sealing pressure-bearing assembly, logging-while-drilling instrument and assembling method of logging-while-drilling instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721365.9A CN111779472A (en) | 2020-07-24 | 2020-07-24 | Sealing pressure-bearing assembly, logging-while-drilling instrument and assembling method of logging-while-drilling instrument |
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| CN111779472A true CN111779472A (en) | 2020-10-16 |
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| CN112600019B (en) * | 2020-12-04 | 2021-10-15 | 中国科学院地质与地球物理研究所 | Data port transmission packaging device of while-drilling instrument and while-drilling nuclear magnetic logging instrument |
| CN113530468A (en) * | 2021-07-14 | 2021-10-22 | 中国海洋石油集团有限公司 | Instrument nipple and logging-while-drilling instrument |
| CN113530468B (en) * | 2021-07-14 | 2024-03-15 | 中国海洋石油集团有限公司 | Instrument nipple joint and logging while drilling instrument |
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