CN113294141B - Multichannel concurrent depth synchronous cable logging method - Google Patents
Multichannel concurrent depth synchronous cable logging method Download PDFInfo
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- CN113294141B CN113294141B CN202110566331.1A CN202110566331A CN113294141B CN 113294141 B CN113294141 B CN 113294141B CN 202110566331 A CN202110566331 A CN 202110566331A CN 113294141 B CN113294141 B CN 113294141B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001360 synchronised effect Effects 0.000 title abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 239000013307 optical fiber Substances 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
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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
- E21B47/04—Measuring depth or liquid level
-
- 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
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention provides a multichannel concurrent depth synchronous cable logging method, which comprises the following steps: acquiring depth data of a plurality of downhole logging instruments; the depth data includes logging instruments I D; transmitting a data acquisition command to the corresponding logging instrument according to each logging instrument I D; each logging instrument corresponds to one data transmission channel, and the data acquisition command is transmitted through the data transmission channel corresponding to the logging instrument; and receiving the acquired data sent by the logging instrument through the corresponding data transmission channel.
Description
Technical Field
The invention relates to the technical field of logging, in particular to a multichannel concurrent depth synchronous cable logging method.
Background
The existing logging system consists of a ground system, logging software, underground telemetry, a logging cable and underground instruments, wherein data exchange between the ground system and the underground instruments is carried out by firstly carrying out data exchange between the underground instruments and the underground telemetry through a logging instrument bus, and then carrying out data exchange between the underground telemetry and the ground telemetry in the ground system through the logging cable, so that the data exchange between the underground instruments and the ground system is realized.
The data sampling of logging instruments in a logging system adopts a time sampling mode, and then the time-depth sampling mode is converted into depth acquisition data, and because the depth points of the depth acquisition data of each instrument are different due to the fact that the measuring points of each instrument are different, interpolation on depth is needed to obtain the measurement data of each instrument on a required depth interval, and errors of the data can be caused by the interpolation.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a multichannel concurrent depth synchronous cable logging method for solving the problem of data errors in the prior art.
In order to solve the above problems, the present invention provides a multi-channel concurrent depth-synchronous cable logging method, which includes:
Acquiring depth data of a plurality of downhole logging instruments; the depth data includes a logging instrument ID;
According to each logging instrument ID, sending a data acquisition command to the corresponding logging instrument; each logging instrument corresponds to one data transmission channel, and the data acquisition command is transmitted through the data transmission channel corresponding to the logging instrument;
And receiving the acquired data sent by the logging instrument through the corresponding data transmission channel.
Preferably, the data transmission channel is a fiber channel.
Preferably, the logging instrument comprises an upper connector, a photoelectric conversion module and a lower connector, and the upper connector, the photoelectric conversion module and the lower connector of each logging instrument are connected to one optical fiber bus.
Preferably, the upper connector, the photoelectric conversion module and the lower connector of each logging instrument are simultaneously connected to m optical fiber buses, and m is not less than the number of logging instruments.
Preferably, the optical signal of any one of the upper connector, the photoelectric conversion module and the lower connector is transmitted to the other two through the optical fiber bus.
Preferably, the m fiber buses are connected in parallel and simultaneously connected to a ground system.
Preferably, the logging cable connects the surface winch and the logging instrument, and the acquiring depth data of the plurality of downhole logging instruments specifically includes:
The depth of the logging instrument is determined by the length of the cable run of the logging cable connected to the surface winch.
Preferably, before sending the data acquisition command to the corresponding logging instrument according to each logging instrument ID, the method further includes:
and comparing the depth data with preset stratum acquisition points, and sending a data acquisition command to the corresponding logging instrument according to each logging instrument ID when the depth data is the preset stratum acquisition points.
The multi-channel concurrent depth synchronous cable logging method provided by the embodiment of the application is applied to acquire depth data of a plurality of downhole logging instruments; the depth data includes a logging instrument ID; according to each logging instrument ID, sending a data acquisition command to the corresponding logging instrument; each logging instrument corresponds to one data transmission channel, and the data acquisition command is transmitted through the data transmission channel corresponding to the logging instrument; and receiving the acquired data sent by the logging instrument through the corresponding data transmission channel. The data transmission channel can avoid interference among logging instruments, avoid uncertainty of data caused by depth interpolation, and improve accuracy of the data.
Drawings
FIG. 1 is a schematic flow chart of a multi-channel concurrent depth-synchronous cable logging method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a logging instrument bus according to an embodiment of the present invention.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The technical scheme of the application is further described in detail through the drawings and the embodiments.
Fig. 1 is a schematic flow chart of a multi-channel concurrent depth synchronous cable logging method according to an embodiment of the present invention, where an execution body of the method is a ground system. As shown in fig. 1, the method comprises the steps of:
step 110, obtaining depth data of a plurality of downhole logging instruments; the depth data includes a logging instrument ID.
Specifically, the logging cable is connected with the ground winch and the logging instrument, and the depth of the logging instrument is determined through the length of the logging cable connected with the ground winch.
Step 120, according to each logging instrument identifier (Identity document, ID), sending a data acquisition command to the corresponding logging instrument; each logging instrument corresponds to one data transmission channel, and the data acquisition command is transmitted through the data transmission channel corresponding to the logging instrument.
Specifically, each logging instrument is provided with an independent data transmission channel, so that a ground system can simultaneously perform data transmission with each logging instrument, the data transmission efficiency is improved, the channels are not affected, and the anti-interference capability in the data transmission process is high.
In one example, as shown in FIG. 2, each logging instrument of the present application is connected to the surface system by an optical fiber. In this figure, the logging instruments include logging instrument 1, logging instrument 2 … … logging instrument n, each logging instrument includes an upper joint, a photoelectric conversion module, a lower joint and an acquisition processing module, the upper joint is a joint connected between the current logging instrument and the previous logging instrument, the lower joint is a joint connected between the current logging instrument and the next logging instrument, the photoelectric conversion module is a module for converting an optical signal into an electrical signal, the acquisition processing module is a module for processing acquired data inside the logging instrument, for example, the logging instrument includes various sensors, such as a temperature sensor, a gravity sensor and the like, and the data acquired by the sensors are processed through the acquisition processing module and converted through the photoelectric conversion module, thereby converting the electrical signal into an optical signal.
The upper connector, the lower connector and the photoelectric conversion module of each logging instrument are connected to the same optical fiber bus. The acquisition processing module in the logging instrument is connected to the photoelectric conversion module through an internal optical fiber.
Further, the upper connector, the photoelectric conversion module and the lower connector corresponding to one logging instrument are simultaneously connected to each of a plurality of optical fiber buses, and the optical fiber buses are connected in parallel, namely one end of each optical fiber bus is connected to a ground system together. Therefore, when the communication is carried out, each logging instrument can be provided with a corresponding optical fiber channel through a selection mechanism, each logging instrument can communicate with a ground system through an independent optical fiber, the logging instruments can not be influenced by each other, and when one optical fiber is damaged, only the logging instrument which communicates through the optical fiber is influenced, and other instruments can not be influenced.
If data exchange between logging instruments is to be carried out, the ground system can send the acquired data of the logging instrument 1 to an optical fiber bus corresponding to the logging instrument 2, and the upper connector, the photoelectric conversion module and the lower connector of the logging instrument 2 can simultaneously receive the data of the logging instrument 1, so that the data transmission rate is improved.
When each logging instrument is connected with m optical fiber buses, the m optical fiber buses are connected in parallel and are simultaneously connected to a ground system, so that the ground system can obtain optical signals of a plurality of logging instruments at the same time, and when any one optical fiber is damaged, data transmission between other logging instruments and the ground system is not affected.
It will be appreciated that when a plurality of logging instruments correspond to a plurality of fiber optic buses, the fiber optic buses may have fiber optic bus identifications (Identity document, ID), the logging instruments also have logging instrument IDs, the relationship of the logging instruments and fiber optic bus IDs are stored in the surface system, and when data for a particular logging instrument is not received, a determination can be made as to which logging instrument or which fiber fails. Meanwhile, when the ground system obtains the data of each optical fiber bus, the ground system can determine the specific logging instrument data according to the packet header of the data.
Because the data transmission channel of the optical fiber bus is established, each logging instrument can select the optical fiber for communication by a first-come selection mechanism when transmitting data. Because each logging instrument can be directly transmitted with the surface system, the surface system can send data acquisition commands to the logging instrument when the measurement points of the logging instrument correspond to the formation acquisition points.
And 130, receiving acquisition data sent by the logging instrument through a corresponding data transmission channel.
The collected data can be optical signals transmitted by an optical fiber, and the optical signals are signals obtained by processing some data of the sensor collected by the collecting and processing module through the photoelectric conversion module. And then the data are transmitted to a ground system through optical fibers, and each logging instrument is provided with a corresponding data transmission channel to interact with the ground system, so that the ground system can acquire acquired data of a plurality of logging instruments at the same time. The ground system sends the data acquisition instruction to the logging instrument, and the precondition that the measuring point of the logging instrument is a stratum acquisition point is that the logging instrument can acquire the acquisition data of each stratum acquisition point in real time, so that the acquisition of the acquisition data by depth interpolation is not needed, and interpolation errors are avoided.
The multi-channel concurrent depth synchronous cable logging method provided by the embodiment of the application is applied to acquire depth data of a plurality of downhole logging instruments; the depth data includes a logging instrument ID; according to each logging instrument ID, sending a data acquisition command to the corresponding logging instrument; each logging instrument corresponds to one data transmission channel, and the data acquisition command is transmitted through the data transmission channel corresponding to the logging instrument; and receiving the acquired data sent by the logging instrument through the corresponding data transmission channel. The data transmission channel can avoid interference among logging instruments, avoid uncertainty of data caused by depth interpolation, and improve accuracy of the data.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a terminal, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The foregoing detailed description of the invention has been presented for purposes of illustration and description, and it should be understood that the invention is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the invention.
Claims (6)
1. A multi-channel concurrent depth-synchronized cable logging method, the multi-channel concurrent depth-synchronized cable logging method comprising:
Acquiring depth data of a plurality of downhole logging instruments; the depth data includes a logging instrument ID;
According to each logging instrument ID, sending a data acquisition command to the corresponding logging instrument; each logging instrument corresponds to one data transmission channel, and the data acquisition command is transmitted through the data transmission channel corresponding to the logging instrument; an upper connector, a photoelectric conversion module and a lower connector corresponding to a logging instrument are simultaneously connected to each of a plurality of optical fiber buses, and the optical fiber buses are connected in parallel; when communication is carried out, each logging instrument determines a corresponding data transmission channel through a selection mechanism;
Receiving acquisition data sent by the logging instrument through a corresponding data transmission channel;
before the data acquisition command is sent to the corresponding logging instrument according to each logging instrument ID, the method further comprises:
and comparing the depth data with preset stratum acquisition points, and sending a data acquisition command to the corresponding logging instrument according to each logging instrument ID when the depth data is the preset stratum acquisition points.
2. The method of claim 1, wherein the data transmission channel is a fibre channel.
3. The method of claim 1, wherein the upper joint, photoelectric conversion module, and lower joint of each logging instrument are simultaneously connected to m fiber optic buses, the m being no less than the number of logging instruments.
4. The method of claim 1, wherein the optical signal of any one of the upper connector, the photoelectric conversion module, and the lower connector is transmitted to the other two through the optical fiber bus.
5. A method according to claim 3, wherein the m fibre buses are connected in parallel and simultaneously connected to a surface system.
6. The method of claim 1, wherein the logging cable connects a surface winch and a logging instrument, and wherein the acquiring depth data of the plurality of downhole logging instruments comprises:
The depth of the logging instrument is determined by the length of the run of the logging cable connected to the surface winch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110566331.1A CN113294141B (en) | 2021-05-24 | 2021-05-24 | Multichannel concurrent depth synchronous cable logging method |
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| CN202110566331.1A CN113294141B (en) | 2021-05-24 | 2021-05-24 | Multichannel concurrent depth synchronous cable logging method |
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| CN113294141B true CN113294141B (en) | 2024-08-20 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418317A (en) * | 2000-06-01 | 2003-05-14 | 马拉索恩石油公司 | Mthod and system for performing operations and for improving production in wells |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102839971B (en) * | 2011-06-21 | 2016-08-10 | 中国石油集团长城钻探工程有限公司 | Downhole logging instrument bus system based on coaxial cable Ethernet and logging method |
| CN104121015B (en) * | 2013-04-24 | 2016-09-21 | 中国石油化工股份有限公司 | The method of mounting downhole logging instruments and well logging ground-based system |
| CN104763413B (en) * | 2015-03-10 | 2017-09-22 | 中国海洋石油总公司 | It is a kind of for the data/address bus of downhole logging instruments, system and data transmission method |
| WO2017052514A1 (en) * | 2015-09-22 | 2017-03-30 | Halliburton Energy Services, Inc. | Scalable communication system for hydrocarbon wells |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418317A (en) * | 2000-06-01 | 2003-05-14 | 马拉索恩石油公司 | Mthod and system for performing operations and for improving production in wells |
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