CN116066003A - Method and system for fishing fish - Google Patents

Method and system for fishing fish Download PDF

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Publication number
CN116066003A
CN116066003A CN202211458152.7A CN202211458152A CN116066003A CN 116066003 A CN116066003 A CN 116066003A CN 202211458152 A CN202211458152 A CN 202211458152A CN 116066003 A CN116066003 A CN 116066003A
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China
Prior art keywords
load
signal
fish
acquisition module
initial
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Pending
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CN202211458152.7A
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Chinese (zh)
Inventor
王丽君
高玮
廖奉武
杨鹏
姚建鹏
王晓军
王健
景烨琦
张颍苹
任艳
谢济瑄
殷航
刘畅
闻丽
张雪
张剑锋
魏国一
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China National Petroleum Corp
CNPC Great Wall Drilling Co
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China National Petroleum Corp
CNPC Great Wall Drilling Co
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Priority to CN202211458152.7A priority Critical patent/CN116066003A/en
Publication of CN116066003A publication Critical patent/CN116066003A/en
Pending legal-status Critical Current

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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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Geophysics (AREA)

Abstract

The application discloses a method and a system for fishing a fish. According to the method, an initial position is determined according to the position of the fish, a load acquisition module is controlled to move to the initial position, and a first load value of the load acquisition module is recorded; controlling the load acquisition module to move to the position of the fish, fixing the load acquisition module and the fish, lifting the load acquisition module and the fish to the initial position, and recording a second load value of the load acquisition module; and determining a fishing result of the fish according to the first load value and the second load value. According to the technical scheme, the load value of the load acquisition module under the condition of no load and load is monitored, and the accuracy of judging the fish salvaging result is ensured.

Description

Method and system for fishing fish
Technical Field
The application relates to the technical field of manufacturing of ground equipment in petroleum and natural gas engineering, in particular to a fish salvaging method and system.
Background
The fish is a down-hole falling object, in particular to a drilling tool which falls into or falls into the well due to accidents such as fracture or drill sticking of the drilling tool. In the construction process of oilfield workover operation, fishing work of a relatively light fish such as pipe tongs, bolts, oil pipe short joints or a single oil pipe often occurs.
When the fishing operation is performed, fishing tools such as a fishing spear and a fishing barrel are usually utilized for fishing, but since the weight of an oil pipe string or a drill pipe string for fishing is usually tens of tons, the friction force between the pipe string and a well wall is very large, and the weight of a fish such as a pipe wrench, a bolt, an oil pipe short circuit or a single oil pipe is relatively light, when the fish is positioned at a deep position in a well, the weight of the actual fish cannot be read from a weight indicator displaying the pull-up load of the pipe string in the workover rig, and whether the fish is successfully fished cannot be determined. The fishing tool can only be started up for a time to observe, and if the fishing tool is not successfully fished, the fishing tool needs to be fished again, and even if the fishing tool can be successfully fished finally, a great deal of manpower, financial resources and construction time are consumed.
Therefore, how to provide a technical scheme capable of judging the fishing of the fish is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
The application provides a method and a system for fishing a fish, which are used for monitoring load values of a load acquisition module under the condition of no load and load, and ensuring the accuracy of judging a fish fishing result.
According to an aspect of the present application, there is provided a method of fishing a fish, the method comprising:
determining an initial position according to the position of the fish, controlling a load acquisition module to move to the initial position, and recording a first load value of the load acquisition module;
controlling the load acquisition module to move to the position of the fish, fixing the load acquisition module and the fish, lifting the load acquisition module and the fish to the initial position, and recording a second load value of the load acquisition module;
and determining the fishing result of the fish according to the first load value and the second load value.
According to another aspect of the present application, there is provided a fish fishing system for use in a fish fishing method, the system comprising a cable, a load acquisition module, a signal processing module and a signal conversion module, wherein,
the cable is used for driving the load acquisition module and the signal processing module to move to a designated position;
the load acquisition module is used for acquiring an initial load signal acquired by the tension and compression sensor in the load acquisition module and transmitting the initial load signal to the signal processing module;
the signal processing module is used for receiving the initial load signal transmitted by the load acquisition module, carrying out enhancement processing on the initial load signal to obtain an enhanced load signal, and transmitting the enhanced load signal to the cable;
the cable is also used for transmitting the enhanced load signal to a signal conversion module of the wellhead;
the signal conversion module is used for receiving the enhanced load signal transmitted by the cable, converting the enhanced load signal and determining the load value of the load acquisition module.
According to the technical scheme, the initial position is determined according to the position of the fish, the load acquisition module is controlled to move to the initial position, and the first load value of the load acquisition module is recorded; controlling the load acquisition module to move to the position of the fish, fixing the load acquisition module and the fish, lifting the load acquisition module and the fish to the initial position, and recording a second load value of the load acquisition module; and determining a fishing result of the fish according to the first load value and the second load value. According to the technical scheme, the load value of the load acquisition module under the condition of no load and load is monitored, and the accuracy of judging the fish salvaging result is ensured.
It should be understood that the description of this section is not intended to identify key or critical features of the embodiments of the application or to delineate the scope of the application. Other features of the present application will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for fishing a fish according to an embodiment of the present disclosure;
fig. 2a is a schematic diagram of a first stage of a fish fishing process according to a second embodiment of the present application;
fig. 2b is a schematic diagram of a second stage of a fish salvaging process according to a second embodiment of the present invention;
fig. 2c is a schematic diagram of a third stage of a fish fishing process according to a second embodiment of the present disclosure;
fig. 2d is a schematic diagram of a fourth stage of a fish salvaging process according to a second embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a fish fishing system according to a second embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a load acquisition module according to a second embodiment of the present application;
fig. 5 is a schematic structural diagram of a signal processing module according to a second embodiment of the present application;
fig. 6 is a schematic structural diagram of a signal conversion module according to a second embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," "initial," and the like in the description and claims of the present application and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a method for fishing a fish according to an embodiment of the present application, which is applicable to a case of fishing a fish with a relatively light weight. As shown in fig. 1, the method includes:
s110, determining an initial position according to the position of the fish, controlling the load acquisition module to move to the initial position, and recording a first load value of the load acquisition module.
Wherein the position of the fish may include the depth and offset direction of the fish roof of the fish in the downhole position. The depth of the fish crown of the fish in the underground position can be based on the ground, and the distance between the fish crown and the ground can be obtained by prediction according to the established underground model or by measurement through a measuring instrument. The direction of the offset of the fish roof of the fish in the downhole location may include the direction and angle of inclination of the fish roof.
The initial position may be a position where the load acquisition module is in an idle state.
The first load value may be a load value measured by the load acquisition module in an idle state.
In the embodiment of the invention, the first load value of the load acquisition module in the idle state can be measured by controlling the load acquisition module to be lowered to the initial position through the drill rod or the cable.
As an optional but non-limiting implementation, determining the initial position according to the position of the fish includes: and determining the position of the preset height above the fish as an initial position according to the position and the preset height of the fish.
The preset height can be determined according to the geological characteristics of the well where the fish is located. For example, the fish roof of a fish is located at 510 meters downhole, and the initial position is 500 meters downhole if the preset height is set to 10 meters.
The advantage of this is that it ensures that the load value measured by the load acquisition module in the initial position is the load value in the unloaded state.
As an alternative but non-limiting implementation, before determining the initial position according to the position of the fish, the method further comprises, but is not limited to, the following procedure of steps A1 to A2:
and A1, determining the height from the fish to the ground based on a drift diameter gauge.
The diameter gauge is a detection tool for underground operation and is used for detecting underground conditions. In the embodiment of the invention, the cable can be used for driving the drift diameter gauge to descend so as to detect the fish tops of the fishes, and the heights of the fish tops of the fishes in the well holes relative to the ground can be determined.
And A2, determining the position of the fish according to the height.
The relative position of the fish in the fish fishing system coordinate system can be determined according to the height of the fish roof of the fish relative to the ground in the well bore.
S120, controlling the load acquisition module to move to the position of the fish, fixing the load acquisition module and the fish, lifting the load acquisition module and the fish to the initial position, and recording a second load value of the load acquisition module.
The second load value is a load value measured by the load acquisition module under the load condition.
The fixing mode of the load acquisition module and the fish can be determined according to the type of the fishing tool in the load acquisition module. For example, if the fishing tool is a retractable slip overshot, the fixing manner may be to clamp the fish by using the elastic force of the slip teeth; if the fishing tool is a male cone, the fixing mode can be to make a buckle for fishing the inner holes of the perforated fish such as the drill rod, the oil pipe and the like by utilizing the thread section on the male cone; if the fishing tool is a female cone, the fixing mode can be to make a buckle and salvage on the outer wall of a tubular fish such as a drill rod, an oil pipe and the like by utilizing a thread section on the female cone. Of course, the embodiment of the invention does not limit the fixing mode of the load acquisition module and the fish, so that the method is applicable to various construction environments such as a drilling open hole environment, a production casing environment, a production oil pipe environment and the like.
In the embodiment of the invention, the load acquisition module can be driven by the drill rod or the cable to descend to the fish, the fishing tool and the fish in the load acquisition module are fixed, and when the fishing tool catches the fish, the weight load of the fish can be transmitted to the load acquisition module through the fishing tool.
As an alternative but non-limiting implementation manner, the load acquisition module is controlled to move to the position of the fish, the load acquisition module and the fish are fixed and lifted to the initial position, and a second load value of the load acquisition module is recorded, including but not limited to the following steps B1 to B3:
and B1, controlling the cable to be lowered, and driving the load acquisition module to move to the position of the fish through the cable.
Because the lifting speed of the cable is between 3000 and 6000 m/h, the operation speed of fishing the fish can be greatly improved relative to the drill rod. In the embodiment of the invention, for some of the fishes with lighter weight, the load acquisition module can be driven by the control cable to salvage the fishes.
Wherein, the cable drum is on the cylinder, and load acquisition module joinable installs in the bottom of cable. And (3) paying off the cable at the wellhead, and adjusting the paying-off length of the cable according to the position of the fish so that the cable drives the load acquisition module to move to the position of the fish.
And B2, fixing the load acquisition module and the fish through a fishing spear in the load acquisition module.
The fishing spear is a fishing tool, and can fix the fish so that the weight load of the fish is transferred to the load acquisition module.
And B3, controlling the cable to lift up, driving the load acquisition module to move to the initial position through the cable, and recording a second load value of the load acquisition module.
The lifting length of the cable is adjusted according to the position and the initial position of the fish, so that the cable drives the load acquisition module to move to the initial position.
The advantage of setting up like this is that can salvage the fish that weight is lighter and be difficult for confirming from the weight indicator through the cable, promotes the speed and the efficiency that the fish was salvaged.
S130, determining the fishing result of the fish according to the first load value and the second load value.
The salvage result can be divided into salvage success and salvage failure. In the embodiment of the invention, the fishing result of the fish can be determined by comparing the first load value of the load acquisition module in the no-load state with the second load value of the load acquisition module in the load state.
As an alternative but non-limiting implementation, determining the fishing result of the fish according to the first load value and the second load value includes, but is not limited to, the following steps C1 to C2:
and C1, determining a difference value between the first load value and the second load value according to the first load value and the second load value.
In the embodiment of the present invention, a value obtained by subtracting the first load value from the second load value may be used as the difference value, or an absolute value obtained by subtracting the second load value from the first load value may be used as the difference value.
Step C2, if the difference value is larger than zero, determining that the fish is successfully fished; and if the difference value is equal to zero, determining that the fish salvaging fails.
When the difference value is greater than zero, the load acquisition module can be determined that the fish is indeed fished in the load state; when the difference is equal to zero, it can be determined that no fish is salvaged by the load acquisition module in the load state. Through the arrangement, the fishing result of the fish can be conveniently and quickly clarified.
The embodiment of the invention provides a method for fishing a fish, which comprises the steps of determining an initial position according to the position of the fish, controlling a load acquisition module to move to the initial position, and recording a first load value of the load acquisition module; controlling the load acquisition module to move to the position of the fish, fixing the load acquisition module and the fish, lifting the load acquisition module and the fish to the initial position, and recording a second load value of the load acquisition module; and determining a fishing result of the fish according to the first load value and the second load value. According to the technical scheme, the load value of the load acquisition module under the condition of no load and load is monitored, and the accuracy of judging the fish salvaging result is ensured.
On the basis of the above embodiment, optionally, the recording method of the load value includes, but is not limited to, the following processes of steps D1 to D4:
and D1, acquiring an initial load signal acquired by a tension and compression sensor in the load acquisition module through the load acquisition module.
The tension-compression sensor can be a resistance type sensor and consists of an elastic sensitive element, a resistance strain gauge, a compensation resistor and a shell. When the elastic sensing element is deformed by acting force, the resistance strain gauge attached to the elastic sensing element is deformed together, and the deformation degree of the resistance strain gauge is converted into the change of the resistance value, so that an initial load signal can be obtained.
And D2, performing enhancement processing on the initial load signal to obtain an enhanced load signal.
Since the position of the fish is generally far from the ground, and the strength of the initial load signal acquired by the pull-press sensor is weak, the initial load signal is not sufficiently transmitted to the wellhead in the process of long-distance signal transmission. Therefore, the embodiment of the invention enhances the initial load signal acquired by the tension and compression sensor, so that the signal received by the wellhead is more accurate.
The enhancement processing may be filtering processing, amplifying processing, modulation demodulation processing, equalization processing, or the like. The embodiment of the invention is not limited to the method, and can be determined according to actual needs.
And D3, transmitting the enhanced load signal to a wellhead through a cable.
The cable is used as a medium for connecting the surface equipment and the underground operation tool, and the cable can be retracted through the surface winch to transfer pulling force to the underground operation tool and transmit signals acquired by the underground operation tool to the surface equipment. The advantage of this arrangement is that the signals acquired downhole can be transmitted stably by means of the cable.
And D4, converting the enhanced load signal and determining a load value of the load acquisition module.
After the surface equipment receives the cable-transmitted downhole-acquired enhanced load signal, the enhanced load signal needs to be converted into identifiable and intuitive data information in order for the surface personnel to determine the downhole condition.
The signal conversion may be conversion of an interface standard of a signal, decoding of a signal, or the like.
Illustratively, if the level logic of the payload value is 232 level or USB level and the level logic of the enhanced payload signal is TTL level, then the level logic of the enhanced payload signal needs to be converted. The TTL level may be converted to 232 level by, for example, MAX232, MAX3232, SP232, SP3232, etc. chips.
As an alternative but non-limiting implementation manner, the initial load signal is subjected to enhancement processing to obtain an enhanced load signal, which includes but is not limited to the following processes of steps E1 to E3:
and E1, amplifying and filtering the initial load signal to obtain a pure load signal.
The amplification processing can amplify the amplitude of the initial load signal through an amplification circuit so as to ensure accurate acquisition of the signal. The filtering process may filter noise in the initial payload signal by a filtering circuit to ensure signal purity. In the embodiment of the invention, the high-quality and pure signal can be obtained by amplifying and filtering the initial load signal.
And E2, encoding the pure load signal to obtain a Manchester code corresponding to the pure load signal.
Wherein the encoding is used to combat noise signals and attenuation in the channel to improve immunity to interference and error correction. In the embodiment of the invention, the pure load signal can be encoded into Manchester codes, so that the remote signal transmission of the subsequent cable is facilitated.
And E3, amplifying the Manchester code to obtain an enhanced load signal.
In order to ensure that the subsequent signal can be effectively transmitted in the long-distance transmission process of the cable, the transmission power of the Manchester code corresponding to the pure load signal can be amplified to obtain the enhanced load signal.
The advantage of this arrangement is that the signal is amplified, filtered, encoded, etc. in various ways to ensure the effectiveness of the remote transmission of the signal.
Optionally, before encoding the pure load signal, amplifying the power of the pure load signal to obtain the conditioned load signal. Correspondingly, the conditioning load signal is encoded to obtain a Manchester code corresponding to the conditioning load signal; and amplifying the power of the Manchester code to obtain an enhanced load signal.
Fig. 2 a-2 d are schematic diagrams illustrating stages of a fish fishing process according to a second embodiment of the present disclosure. As shown in fig. 2a, the fish a is short-circuited by the oil pipe, the control cable D drives the signal processing module and the load acquisition module C to drop to a preset height above the fish a, and records a first load value F of the load acquisition module C at this time 1 50N; the fishing spear B in the load acquisition module C is used for fixing the fish A. As shown in fig. 2b, the control cable D drives the signal processing module and the load acquisition module C to move to the position of the fish a to perform the fish aFixing. As shown in fig. 2c, the control cable D drives the fixed fish a to lift up to the position shown in fig. 2a, and records the second load value F of the load acquisition module at this time 2 300N; calculate a first load value F 1 And the second load value F 2 If the difference value of the fishing line is 250N, the fishing result of the fish A can be determined to be successful. As shown in fig. 2d, if the fishing result is that the fishing is successful, the control cable drives the fixed fish to lift up to the wellhead, and no fish is in the well.
Example two
Fig. 3 is a schematic structural diagram of a fish fishing system according to a second embodiment of the present application, which is optimized based on the above embodiment. As shown in fig. 3, the fish fishing system includes a cable 310, a load acquisition module 320, a signal processing module 330, and a signal processing module 340, wherein:
a cable 310 for driving the load acquisition module 320 to move to a designated position;
the load acquisition module 320 is configured to acquire an initial load signal acquired by the pull-press sensor in the load acquisition module 320, and transmit the initial load signal to the signal processing module 330;
the signal processing module 330 is configured to receive the initial load signal transmitted by the load acquisition module 320, perform enhancement processing on the initial load signal to obtain an enhanced load signal, and transmit the enhanced load signal to the cable 310;
the cable 310 is further configured to receive the enhanced load signal obtained by the signal processing module 330, and transmit the enhanced load signal to a signal processing module of the wellhead;
the signal processing module is configured to receive the enhanced load signal transmitted by the cable 310, and convert the enhanced load signal to determine a load value of the load acquisition module 320.
The cable 310 is used as a medium for connecting surface equipment and a downhole operation tool, and the cable 310 can be retracted through a surface winch to transmit pulling force to the downhole operation tool, and signals acquired by the downhole operation tool can be transmitted to the surface equipment. According to the bearable weight of the cable 310, a fish determination may be made that is within the bearable weight range of the cable 310.
The load acquisition module 320 may acquire weight load information of the fished fish.
Optionally, fig. 4 is a schematic structural diagram of a load collecting module according to a second embodiment of the present application. As shown in fig. 4, the load acquisition module 320 includes a fishing spear 321 and a pull-press sensor 322, wherein,
the fishing spear 321 is connected with the pulling and pressing sensor 322 and is used for fixing the load acquisition module 320 and the fish;
the pull-press sensor 322 is connected with the signal processing module 330, and is used for acquiring an initial load signal of the load of the fishing spear 321 and transmitting the initial load signal to the signal processing module 330.
The fishing spear 321 is a fishing tool for the fish, and can be determined according to the construction environment. The fishing spear 321 and the pulling and pressing sensor 322 can be connected in a conventional variable-port short-circuit mode. The manner in which the fishing spear 321 secures the load acquisition module 320 and the fish may be determined according to the type of fishing spear 321.
The pull-press sensor 322 may be a resistive sensor, and is composed of an elastic sensing element, a resistive strain gauge, a compensation resistor and a housing. When the elastic sensing element is deformed by acting force, the resistance strain gauge attached to the elastic sensing element is deformed together, and the deformation degree of the resistance strain gauge is converted into the change of the resistance value, so that an initial load signal can be obtained.
The signal processing module 330 may enhance the signal transmitted by the load acquisition module 320 to obtain a signal suitable for long-distance transmission.
Optionally, fig. 5 is a schematic structural diagram of a signal processing module according to a second embodiment of the present application. As shown in fig. 5, the signal processing module 330 includes a signal conditioning unit 331, a signal enhancing unit 332, and a signal transmitting unit 333, wherein,
the signal conditioning unit 331 is configured to receive the initial load signal transmitted by the load acquisition module 320, and amplify and filter the initial load signal to obtain a pure load signal;
a signal enhancing unit 332, configured to encode the pure load signal, so as to obtain a manchester code corresponding to the pure load signal;
the signal transmission unit 333 is configured to amplify the manchester code to obtain an enhanced load signal.
The signal processing module 340 may convert the enhanced load signal transmitted by the cable 310 to obtain an intuitively identifiable load value, so as to determine a fishing result of the fish.
Optionally, fig. 6 is a schematic structural diagram of a signal conversion module according to a second embodiment of the present application. As shown in fig. 6, the signal processing module includes a signal decoding unit 341, an interface conversion unit 342, and a display unit 343, wherein,
a signal decoding unit 341, configured to receive the enhanced payload signal transmitted by the cable 310, and decode the enhanced payload signal to obtain a TTL level signal of the enhanced payload signal;
an interface conversion unit 342 for converting the TTL level signal into a USB level signal;
and a display unit 343 for determining the load value of the load acquisition module 320 according to the USB level signal, and displaying the load value.
The signal decoding unit 341 is configured to decode the manchester code.
The interface conversion unit 342 may convert the level logic of the decoded enhanced payload signal to obtain an identifiable USB level signal.
The display unit 343 can determine the load value collected by the load collection module 320 according to the USB level signal, and generate a load curve according to the load value collected by the load collection module 320 and the collection time, so as to facilitate visual display and judge the fishing result of the fish. In addition, the display unit 343 may store the identified load value data.
The embodiment of the invention provides a fish salvaging system, which comprises a cable, a load acquisition module, a signal processing module and a signal processing module, wherein the cable is used for driving the load acquisition module to move to a designated position; the load acquisition module is used for acquiring an initial load signal acquired by the tension and compression sensor in the load acquisition module and transmitting the initial load signal to the signal processing module; the signal processing module is used for receiving the initial load signal transmitted by the load acquisition module, carrying out enhancement processing on the initial load signal to obtain an enhanced load signal, and transmitting the enhanced load signal to the cable; the cable is also used for transmitting the enhanced load signal to a signal conversion module of the wellhead; the signal conversion module is used for receiving the enhanced load signal transmitted by the cable, converting the enhanced load signal and determining the load value of the load acquisition module. According to the technical scheme, the load value of the load acquisition module in the process of fishing the fish is monitored, and the accuracy of judging the fishing result of the fish is ensured.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present application may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solutions of the present application are achieved, and the present application is not limited herein.
The above embodiments do not limit the scope of the application. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application are intended to be included within the scope of the present application.

Claims (11)

1. A method of fishing fish, the method comprising:
determining an initial position according to the position of the fish, controlling a load acquisition module to move to the initial position, and recording a first load value of the load acquisition module;
controlling the load acquisition module to move to the position of the fish, fixing the load acquisition module and the fish, lifting the load acquisition module and the fish to the initial position, and recording a second load value of the load acquisition module;
and determining the fishing result of the fish according to the first load value and the second load value.
2. The method of claim 1, wherein determining the fishing result of the fish based on the first load value and the second load value comprises:
determining a difference between the first load value and the second load value according to the first load value and the second load value;
if the difference value is greater than zero, determining that the fish is successfully fished; and if the difference value is equal to zero, determining that the fish salvaging fails.
3. The method of claim 1, wherein prior to determining an initial position from the position of the fish, the method further comprises:
determining the height from the fish to the ground based on a drift diameter gauge;
and determining the position of the fish according to the height.
4. The method of claim 1, wherein determining an initial position from the position of the fish comprises:
and determining the position of the preset height above the fish as an initial position according to the position and the preset height of the fish.
5. The method of claim 1, wherein controlling the load acquisition module to move to the position of the fish, fixing and lifting the load acquisition module and the fish to the initial position, and recording a second load value of the load acquisition module, comprises:
the control cable is put down, and the load acquisition module is driven to move to the position of the fish through the cable;
fixing the load acquisition module and the fish through a fishing spear in the load acquisition module;
and controlling the cable to lift up, driving the load acquisition module to move to the initial position through the cable, and recording a second load value of the load acquisition module.
6. The method according to claim 1, wherein the recording method of the load value comprises:
acquiring an initial load signal acquired by a tension and compression sensor in the load acquisition module through the load acquisition module;
performing enhancement processing on the initial load signal to obtain an enhanced load signal;
transmitting the enhanced load signal to a wellhead via a cable;
and converting the enhanced load signal to determine a load value of the load acquisition module.
7. The method of claim 6, wherein enhancing the initial load signal to obtain an enhanced load signal comprises:
amplifying and filtering the initial load signal to obtain a pure load signal;
encoding the pure load signal to obtain a Manchester code corresponding to the pure load signal;
and amplifying the Manchester code to obtain an enhanced load signal.
8. A fish salvaging system is characterized by being applied to a fish salvaging method, and comprises a cable, a load acquisition module, a signal processing module and a signal conversion module, wherein,
the cable is used for driving the load acquisition module and the signal processing module to move to a designated position;
the load acquisition module is used for acquiring an initial load signal acquired by the tension and compression sensor in the load acquisition module and transmitting the initial load signal to the signal processing module;
the signal processing module is used for receiving the initial load signal transmitted by the load acquisition module, carrying out enhancement processing on the initial load signal to obtain an enhanced load signal, and transmitting the enhanced load signal to the cable;
the cable is also used for transmitting the enhanced load signal to a signal conversion module of the wellhead;
the signal conversion module is used for receiving the enhanced load signal transmitted by the cable, converting the enhanced load signal and determining the load value of the load acquisition module.
9. The system of claim 8, wherein the load acquisition module comprises a spear and a pull pressure sensor, wherein,
the fishing spear is connected with the pulling and pressing sensor and used for fixing the load acquisition module and the fish;
the pulling and pressing sensor is connected with the signal processing module and used for acquiring an initial load signal of the load of the fishing spear and transmitting the initial load signal to the signal processing module.
10. The system of claim 8, wherein the signal processing module comprises a signal conditioning unit, a signal enhancement unit, and a signal transmission unit, wherein,
the signal conditioning unit is used for receiving the initial load signal transmitted by the load acquisition module, and performing amplification processing and filtering processing on the initial load signal to obtain a pure load signal;
the signal enhancement unit is used for encoding the pure load signal to obtain a Manchester code corresponding to the pure load signal;
and the signal transmission unit is used for amplifying the Manchester code to obtain an enhanced load signal.
11. The system of claim 8, wherein the signal conversion module comprises a signal decoding unit, an interface conversion unit, and a display unit, wherein,
the signal decoding unit is used for receiving the enhanced load signal transmitted by the cable and decoding the enhanced load signal to obtain a TTL level signal of the enhanced load signal;
the interface conversion unit is used for converting the TTL level signal into a USB level signal;
and the display unit is used for determining the load value of the load acquisition module according to the USB level signal and displaying the load value.
CN202211458152.7A 2022-11-21 2022-11-21 Method and system for fishing fish Pending CN116066003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211458152.7A CN116066003A (en) 2022-11-21 2022-11-21 Method and system for fishing fish

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211458152.7A CN116066003A (en) 2022-11-21 2022-11-21 Method and system for fishing fish

Publications (1)

Publication Number Publication Date
CN116066003A true CN116066003A (en) 2023-05-05

Family

ID=86168986

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211458152.7A Pending CN116066003A (en) 2022-11-21 2022-11-21 Method and system for fishing fish

Country Status (1)

Country Link
CN (1) CN116066003A (en)

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