CN117780334B - Drilling fluid level measuring device and measuring method - Google Patents
Drilling fluid level measuring device and measuring method Download PDFInfo
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- CN117780334B CN117780334B CN202410210645.1A CN202410210645A CN117780334B CN 117780334 B CN117780334 B CN 117780334B CN 202410210645 A CN202410210645 A CN 202410210645A CN 117780334 B CN117780334 B CN 117780334B
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Abstract
The invention discloses a drilling fluid level measurement device and a measurement method, and relates to the field of drilling fluid level measurement, wherein the device comprises: the acquisition unit is used for acquiring type information of drilling fluid; the judging unit is used for judging whether the drilling fluid is foam drilling fluid or not based on the type information, if so, the first liquid level measuring unit is started, and if not, the second liquid level measuring unit is started; the first liquid level measuring unit is used for installing the illuminant in the drilling liquid pool, shooting an image of the contact part of the illuminant and the drilling liquid level, analyzing the image and obtaining the drilling liquid level information of the drilling liquid pool based on the scale of the surface of the illuminant; the second liquid level measuring unit is used for installing a liquid level sensor in the drilling liquid pool and acquiring drilling liquid level information of the drilling liquid pool based on the liquid level sensor; the invention can realize accurate measurement of the liquid level of different types of drilling fluids.
Description
Technical Field
The invention relates to the field of drilling fluid level measurement, in particular to a drilling fluid level measurement device and a drilling fluid level measurement method.
Background
Drilling fluid is a generic term for various circulating fluids that meet the needs of drilling operations during the drilling process in its various functions. Drilling fluid is the blood of a well, also known as a drilling fluid.
Drilling fluid is important to the drilling process, the drilling fluid brings impurities in the drilling process out of the bottom of the well, the main effect is to carry rock debris from the bottom of the well to the ground, the liquid level of the drilling fluid is important to monitor in real time, for example, underground water can appear when the liquid level suddenly rises, or underground caves can be encountered when the liquid level of the drilling fluid suddenly drops, and the like, so the liquid level of the drilling fluid needs to monitor in real time.
In the prior art, the liquid level measurement of the drilling fluid is carried out by installing a liquid level sensor in a drilling fluid pool, but the applicant finds that with the gradual popularization of the foam drilling fluid, compared with a conventional drilling fluid system, the liquid density of foam in the foam drilling fluid is lower, so that the static column pressure can be reduced, and the leakage is reduced, and the foam drilling fluid is gradually widely applied, but the traditional liquid level measurement mode is not suitable for the drilling fluid which is the foam drilling fluid, and the situation that the measurement is inaccurate when the traditional pressure measurement type liquid level sensor is used for measuring the liquid level of the foam drilling fluid can occur due to the fact that the foam drilling fluid contains more bubbles.
Disclosure of Invention
The invention aims to accurately measure the liquid level of different types of drilling fluids.
To achieve the above object, the present invention provides a drilling fluid level measurement apparatus, comprising:
The acquisition unit is used for acquiring type information of drilling fluid;
the judging unit is used for judging whether the drilling fluid is foam drilling fluid or not based on the type information, if so, the first liquid level measuring unit is started, and if not, the second liquid level measuring unit is started;
The first liquid level measuring unit is used for installing the illuminant in the drilling liquid pool, shooting an image of the contact part of the illuminant and the drilling liquid level, analyzing the image and obtaining the drilling liquid level information of the drilling liquid pool based on the scale of the surface of the illuminant;
and the second liquid level measuring unit is used for installing a liquid level sensor in the drilling liquid pool and acquiring the drilling liquid level information of the drilling liquid pool based on the liquid level sensor.
The device firstly obtains the type information of drilling fluid by using the acquisition unit, the purpose of obtaining the type of the drilling fluid is to measure by adopting different liquid level measurement modes according to different types, the problem that the accurate liquid level measurement of foam drilling fluid cannot be carried out due to the fact that a single measurement mode is adopted in the prior art is avoided, when the drilling fluid is foam drilling fluid, the condition that the measurement is inaccurate can occur by the traditional pressure type liquid level measurement sensor, the device realizes the accurate measurement of the liquid level of the foam drilling fluid by using the first liquid level measurement unit, and the measurement principle of the first liquid level measurement unit is as follows: the luminous body is arranged in the drilling fluid pool, an image of the contact part of the luminous body and the drilling fluid liquid level is shot, the image is analyzed, drilling fluid liquid level information of the drilling fluid pool is obtained based on scales on the surface of the luminous body, namely, actual liquid level information is obtained by shooting a liquid level image and then analyzing scales of the liquid level. When the drilling fluid is non-foam drilling fluid, a liquid level sensor is installed in the drilling fluid pool, and drilling fluid level information of the drilling fluid pool is obtained based on the liquid level sensor. The 2 liquid level measuring units can be used for starting corresponding liquid level measuring units for different types of drilling fluids to finish the measurement of the liquid level of the drilling fluids.
Wherein, in some embodiments, the first liquid level measurement unit comprises:
the device comprises a suspension mechanism, a telescopic mechanism, a luminous body, an image acquisition module and an analysis module;
The device comprises a suspension mechanism, a telescopic mechanism, a light-emitting body, an image acquisition module, an analysis module and a drilling fluid level information acquisition module, wherein the suspension mechanism is used for being suspended above the drilling fluid level of the drilling fluid tank, the telescopic mechanism is connected with the suspension mechanism, the telescopic mechanism is connected with the upper end of the light-emitting body, the lower end of the light-emitting body extends to the bottom of the drilling fluid tank during initial measurement, the telescopic mechanism is used for adjusting the position of the light-emitting body in the drilling fluid tank, the image acquisition module is used for shooting an image of the contact part of the light-emitting body and the drilling fluid level, and the analysis module is used for analyzing the image and acquiring the drilling fluid level information of the drilling fluid tank based on scales on the surface of the light-emitting body.
Wherein, part of the mechanism of the first liquid level measuring unit can be hung above the liquid level of the drilling liquid pool by using the hanging mechanism, the depth of the illuminant extending into the drilling liquid pool can be conveniently adjusted by using the telescopic function of the telescopic mechanism, the lower end of the illuminant extends to the bottom of the drilling liquid pool during initial measurement, thus the accurate liquid level can be measured, and after the device is used for a period of time, a layer of silt layer appears at the bottom of the drilling fluid pool, the illuminant is moved upwards for a certain distance by using the telescopic mechanism to separate from the silt layer, and the image acquisition and analysis functions are realized by using the cooperation of the image acquisition module and the analysis module, so that the drilling fluid level information of the drilling fluid pool is finally obtained.
In some embodiments, the applicant researches find that, because the drilling fluid is used for carrying rock debris from the bottom of a well to the ground, the drilling fluid contains more impurities, the drilling fluid is easily deposited in the drilling fluid pool in the process of recycling, so that a layer of silt layer appears at the bottom of the drilling fluid pool, and in the initial measurement, the lower end of the illuminant extends to the bottom of the drilling fluid pool, and when the current state is still kept after the layer of silt layer appears at the bottom of the drilling fluid pool, the liquid level measurement is inaccurate due to the influence of the silt layer.
The illuminant includes:
The device comprises a column body and a plurality of soft strips, wherein the soft strips are uniformly distributed on the column body from the top to the bottom of the column body, one end of each soft strip is fixedly connected with the surface of the column body, the other end of each soft strip is used for swinging along with the flowing of drilling fluid, and a plurality of light-emitting elements are uniformly distributed on the soft strips and the column body.
The invention designs a plurality of soft strips on the surface of the column body to detect whether a silt layer exists, and the drilling fluid in the drilling fluid pool is in a circulating flow state, because under normal conditions, the soft strips can swing due to flowing drilling fluid, when the soft strips are positioned in the silt, the soft strips can not swing along with the flowing drilling fluid due to the silt, and the light of a part of light-emitting elements positioned on the soft strips can be blocked by the silt, so that the intensity of the light emitted by the light-emitting elements is reduced. Therefore, whether the soft strip is covered by the sludge can be detected by detecting whether the soft strip swings along with the drilling fluid and the light intensity of the soft strip, and further whether the bottom of the drilling fluid pool is provided with the sludge and the thickness detection of the sludge are realized, and the thickness of the sludge can be calculated and obtained through the position information of the soft strip in the sludge layer. If three soft strips are positioned in the sludge, the thickness of the sludge layer is obtained based on the scale corresponding to the soft strip positioned in the sludge at the uppermost position.
In some embodiments, the image acquisition module is further configured to acquire a first image set by continuously acquiring images of a plurality of light emitters in a first preset time period, where the purpose of acquiring the plurality of continuous images is to determine whether the soft strip swings along with the flow of the drilling fluid through the plurality of continuous images, if yes, the drilling fluid may determine that the soft strip is not in the mud, if not, the drilling fluid is determined to be in the mud, and if yes, the analysis module is further configured to analyze the first image set to determine whether the soft strip is in the mud layer, and if yes, obtain a first thickness of the mud layer based on the position information of the soft strip in the mud layer, and lift the light emitters upward by a first distance based on the first thickness telescoping mechanism, where a size of the first distance is equal to a size of the first thickness.
The position information of the soft strip in the silt layer can be obtained through image recognition analysis, the position information of the soft strip can be obtained through recognition of the soft strip in the image and corresponding scale information of the soft strip, the first thickness of the silt layer is obtained based on the position information of the soft strip in the silt layer, the luminous body is lifted upwards by a first distance based on the first thickness telescopic mechanism, the part of the luminous body inserted into the silt is moved out of the silt layer to enable liquid level measurement to be accurate, the size of the first distance is equal to that of the first thickness, the purpose of the design is that the distance of the luminous body is equal to that of the silt layer, the phenomenon that part of the luminous body still exists in the silt layer due to movement is avoided, and the fact that the distance between the lower end of the luminous body and the silt layer still exists is increased to enable liquid level measurement to be inaccurate is avoided.
In some embodiments, the specific manner in which the analysis module analyzes the first image set to determine whether the soft strip is located in the sludge layer is:
Marking the position and the form of each soft strip in each image in the first image set, obtaining the luminous brightness of each soft strip in each image in the first image set, obtaining the position change information and the form change information of each soft strip for a plurality of continuous images, and judging that a soft strip is positioned in a silt layer if the position and the form of a certain soft strip are unchanged and the luminous brightness is smaller than a brightness threshold value.
Wherein, the soft strip in the silt layer can not swing along with the flowing of the drilling fluid due to the action of the silt, and the emitted light part of the soft strip can be blocked by the silt layer, so that the light intensity of the soft strip in the image can be weakened, therefore, the position change information and the form change information of the soft strip in a plurality of images can be used for judging whether the soft strip swings along with the flowing of the drilling fluid, and finally, the soft strip is comprehensively judged whether the soft strip is in the silt layer according to the luminous brightness of the soft strip.
Wherein, in some embodiments, the second liquid level measurement unit comprises:
the liquid level sensor comprises a first liquid level sensor, a second liquid level sensor, a DA module, a singlechip, an AD module, a display screen, a comparison circuit and an amplifying circuit;
The first liquid level sensor is connected with the DA module, the DA module is connected with the singlechip, the singlechip is connected with the AD module, and the AD module is connected with the display screen;
The second liquid level sensor is connected with a comparison circuit, the comparison circuit is connected with an amplifying circuit, and the amplifying circuit is connected with a drainage device controller of the drilling fluid pool.
The first liquid level sensor is used for measuring the real-time liquid level, transmitting measured liquid level information to the DA module to convert a digital signal into an analog signal, transmitting the analog signal to the singlechip for processing, transmitting the processed information to the AD module to convert the analog signal into the digital signal, and displaying the digital signal by the display screen.
The second liquid level sensor is connected with one end of the first resistor R1, one end of the first resistor R1 is connected with one end of the second resistor R2, the other end of the first resistor R1 and the other end of the second resistor R2 are grounded, the positive input end of the voltage comparator is connected between one end of the first resistor R1 and one end of the second resistor R2, one end of the third resistor R3 is connected with one end of the fourth resistor R4, the other end of the third resistor R3 and the other end of the fourth resistor R4 are grounded, the negative input end of the voltage comparator is connected between one end of the third resistor R3 and one end of the fourth resistor R4, the output end of the voltage comparator is connected with the positive input end of the amplifier, the negative input end of the amplifier is grounded, and the output end of the amplifier is connected with the controller of the drainage device.
In some embodiments, the device further includes an obtaining unit, where the obtaining unit is configured to obtain PH information of the drilling fluid, and the judging unit is further configured to judge whether the PH value of the drilling fluid exceeds a PH threshold, and if yes, close the second liquid level measuring unit and open the first liquid level measuring unit. In some cases, such as that cyanide sulfide is generally produced in the stratum, so that the drilling fluid is mixed with carbonate sulfate ions, an acidic fracturing fluid needs to be actively mixed during acid fracturing, the pH value of the drilling fluid is acidic, the drilling fluid is not suitable for working of a liquid level sensor under the acidic condition, and the corrosion of the liquid level sensor is serious, so that the first liquid level measuring unit can be started even if the drilling fluid is not foam.
Wherein, in some embodiments, the device further comprises a floating block, a through hole is arranged in the middle of the floating block, the column body passes through the through hole, and the floating block is in sliding connection with the column body.
The applicant researches and discovers that when the liquid level measurement is carried out, more bubbles are generated in the using process of the foam drilling fluid, and large bubbles float on the liquid level, so that a layer of foam layer exists on the liquid level, and when the liquid level is identified by using a camera or a camera through shooting an image, the foam layer is mistakenly identified as the uppermost liquid level layer, so that the identification is inaccurate.
Wherein in some embodiments, the image acquisition module is used for shooting an image of the contact part of the floating block and the drilling fluid liquid level, and the analysis module is used for analyzing the image and obtaining the drilling fluid liquid level information of the drilling fluid pool based on the scale of the corresponding illuminant surface of the floating block.
The invention also provides a drilling fluid level measurement method, which comprises the following steps of:
Obtaining type information of drilling fluid;
Judging whether the drilling fluid is foam drilling fluid or not based on the type information, if so, installing the illuminant in the drilling fluid pool, shooting an image of the contact part of the illuminant and the drilling fluid level, analyzing the image and obtaining the drilling fluid level information of the drilling fluid pool based on the scale of the illuminant surface; if the liquid level sensor is not installed in the drilling liquid pool, obtaining the drilling liquid level information of the drilling liquid pool based on the liquid level sensor.
The one or more technical schemes provided by the invention have at least the following technical effects or advantages:
the invention can realize accurate measurement of the liquid level of different types of drilling fluids.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;
FIG. 1 is a schematic diagram of the composition of a drilling fluid level measurement device;
FIG. 2 is a schematic diagram of the structure of the first liquid level measuring unit;
FIG. 3 is a schematic diagram of the structure of the second liquid level measuring unit;
Wherein, 1-suspension mechanism, 2-telescopic mechanism, 3-cylinder, 4-soft strip, 5-light emitting component, 6-kicker.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other without collision.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than within the scope of the description, and therefore the scope of the invention is not limited to the specific embodiments disclosed below.
Embodiment one;
Referring to fig. 1, fig. 1 is a schematic diagram of a drilling fluid level measurement device, and the invention provides a drilling fluid level measurement device, which includes:
the acquisition unit is used for acquiring type information of drilling fluid; the acquisition unit can be in butt joint with the drilling fluid circulation management system, and the type information of the drilling fluid is obtained through the drilling fluid circulation management system;
the judging unit is used for judging whether the drilling fluid is foam drilling fluid or not based on the type information, if so, the first liquid level measuring unit is started, and if not, the second liquid level measuring unit is started;
The first liquid level measuring unit is used for installing the illuminant in the drilling liquid pool, shooting an image of the contact part of the illuminant and the drilling liquid level, analyzing the image and obtaining the drilling liquid level information of the drilling liquid pool based on the scale of the surface of the illuminant;
and the second liquid level measuring unit is used for installing a liquid level sensor in the drilling liquid pool and acquiring the drilling liquid level information of the drilling liquid pool based on the liquid level sensor.
In an embodiment of the present invention, please refer to fig. 2, fig. 2 is a schematic structural diagram of a first liquid level measurement unit, where the first liquid level measurement unit includes:
the device comprises a suspension mechanism 1, a telescopic mechanism 2, a luminous body, an image acquisition module and an analysis module;
The device comprises a suspension mechanism, a telescopic mechanism, a light-emitting body, an image acquisition module, an analysis module and a drilling fluid level information acquisition module, wherein the suspension mechanism is used for being suspended above the drilling fluid level of the drilling fluid tank, the telescopic mechanism is connected with the suspension mechanism, the telescopic mechanism is connected with the upper end of the light-emitting body, the lower end of the light-emitting body extends to the bottom of the drilling fluid tank during initial measurement, the telescopic mechanism is used for adjusting the position of the light-emitting body in the drilling fluid tank, the image acquisition module is used for shooting an image of the contact part of the light-emitting body and the drilling fluid level, and the analysis module is used for analyzing the image and acquiring the drilling fluid level information of the drilling fluid tank based on scales on the surface of the light-emitting body.
The hanging mechanism may be a mechanism with hanging function or a mechanism with hanging function, and the invention is not limited to the specific structure, such as hanging frame.
The telescopic mechanism is a mechanism capable of telescoping or shortening, such as an electric telescopic rod and the like.
The image acquisition module is a camera or a video camera, the analysis module is a processor with an image analysis function and can identify information in an image, wherein in order to accurately measure, if the acquisition angle of the image acquisition module has offset, angle correction processing can be added during analysis, and the specific angle correction processing mode is not repeated and limited.
Wherein, in the embodiment of the invention, the illuminant comprises:
The drilling fluid drilling device comprises a column body 3 and a plurality of soft strips 4, wherein the soft strips are uniformly distributed on the column body from top to bottom along the column body, one end of each soft strip is fixedly connected with the surface of the column body, the other end of each soft strip is used for swinging along with the flow of the drilling fluid, and a plurality of light-emitting elements 5 are uniformly distributed on the soft strips and the column body.
The column is preferably a smooth column, the soft strip is preferably a rubber strip or a cloth strip, and the light emitting element may be an LED lamp or the like.
In this embodiment of the present invention, the image acquisition module is further configured to continuously acquire images of a plurality of light emitters in a first preset period of time to obtain a first image set, if 10 images can be taken after 30 seconds, the analysis module is further configured to analyze the first image set to determine whether a soft strip is located in the silt layer, if it is determined that the soft strip is located in the silt layer, obtain a first thickness of the silt layer based on position information of the soft strip located in the silt layer, and lift the light emitters upward by a first distance based on a first thickness telescopic mechanism, where the first distance is equal to the first thickness, and if it is determined that the silt layer thickness is 20CM, lift the light emitters upward by 20CM.
In this embodiment of the present invention, the specific manner in which the analysis module analyzes the first image set to determine whether a soft strip is located in a sludge layer is:
Marking the position and the form of each soft strip in each image in the first image set, obtaining the luminous brightness of each soft strip in each image in the first image set, obtaining the position change information and the form change information of each soft strip for a plurality of continuous images, and judging that a soft strip is positioned in a silt layer if the position and the form of a certain soft strip are unchanged and the luminous brightness is smaller than a brightness threshold value. If a certain soft strip is always at a certain position and does not swing along with drilling fluid, the light emitted by the soft strip is darker.
In an embodiment of the present invention, please refer to fig. 3, fig. 3 is a schematic structural diagram of a second liquid level measurement unit, the second liquid level measurement unit includes:
the liquid level sensor comprises a first liquid level sensor, a second liquid level sensor, a DA module, a singlechip, an AD module, a display screen, a comparison circuit and an amplifying circuit;
The first liquid level sensor is connected with the DA module, the DA module is connected with the singlechip, the singlechip is connected with the AD module, and the AD module is connected with the display screen;
The second liquid level sensor is connected with a comparison circuit, the comparison circuit is connected with an amplifying circuit, and the amplifying circuit is connected with a drainage device controller of the drilling fluid pool.
The first liquid level sensor is used for measuring the real-time liquid level, transmitting measured liquid level information to the DA module to convert a digital signal into an analog signal, transmitting the analog signal to the singlechip for processing, transmitting the processed information to the AD module to convert the analog signal into the digital signal, and displaying the digital signal by the display screen.
The first liquid level sensor and the second liquid level sensor are liquid level sensors in the prior art, such as pressure-sensitive ceramic liquid level sensors, the specific model of the liquid level sensor is not limited, and the liquid level sensor can be selected according to actual conditions in specific application.
The second liquid level sensor is connected with one end of the first resistor R1, one end of the first resistor R1 is connected with one end of the second resistor R2, the other end of the first resistor R1 and the other end of the second resistor R2 are grounded, the positive input end of the voltage comparator is connected between one end of the first resistor R1 and one end of the second resistor R2, one end of the third resistor R3 is connected with one end of the fourth resistor R4, the other end of the third resistor R3 and the other end of the fourth resistor R4 are grounded, the negative input end of the voltage comparator is connected between one end of the third resistor R3 and one end of the fourth resistor R4, the output end of the voltage comparator is connected with the positive input end of the amplifier, the negative input end of the amplifier is grounded, and the output end of the amplifier is connected with the controller of the drainage device.
The device comprises a first liquid level measuring unit, a second liquid level measuring unit, an acquisition unit and a judging unit, wherein the first liquid level measuring unit is used for acquiring the PH value information of drilling fluid, the PH value information can be monitored in real time by using a PH value sensor, the judging unit is also used for judging whether the PH value of the drilling fluid exceeds a PH threshold value, and if the PH value exceeds the PH threshold value, the first liquid level measuring unit is turned on by turning off the second liquid level measuring unit.
In the embodiment of the invention, the device further comprises a floating block 6, a through hole is formed in the middle of the floating block, the column body passes through the through hole, and the floating block is connected with the column body in a sliding mode. The floating block is an object capable of floating on the drilling fluid, the specific material can be selected according to actual needs, and the embodiment of the invention is not particularly limited.
In the embodiment of the invention, the image acquisition module is used for shooting an image of the contact part of the floating block and the drilling fluid liquid level, and the analysis module is used for analyzing the image and obtaining the drilling fluid liquid level information of the drilling fluid pool based on the scale of the floating block corresponding to the surface of the illuminant.
Embodiment two;
On the basis of the first embodiment, the second embodiment of the invention also provides a drilling fluid level measurement method, which comprises the following steps:
Obtaining type information of drilling fluid;
Judging whether the drilling fluid is foam drilling fluid or not based on the type information, if so, installing the illuminant in the drilling fluid pool, shooting an image of the contact part of the illuminant and the drilling fluid level, analyzing the image and obtaining the drilling fluid level information of the drilling fluid pool based on the scale of the illuminant surface; if the liquid level sensor is not installed in the drilling liquid pool, obtaining the drilling liquid level information of the drilling liquid pool based on the liquid level sensor.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. A drilling fluid level measurement apparatus, the apparatus comprising:
The acquisition unit is used for acquiring type information of drilling fluid;
the judging unit is used for judging whether the drilling fluid is foam drilling fluid or not based on the type information, if so, the first liquid level measuring unit is started, and if not, the second liquid level measuring unit is started;
The first liquid level measuring unit is used for installing the illuminant in the drilling liquid pool, shooting an image of the contact part of the illuminant and the drilling liquid level, analyzing the image and obtaining the drilling liquid level information of the drilling liquid pool based on the scale of the surface of the illuminant;
the second liquid level measuring unit is used for installing a liquid level sensor in the drilling liquid pool and acquiring drilling liquid level information of the drilling liquid pool based on the liquid level sensor; the first liquid level measurement unit includes:
the device comprises a suspension mechanism, a telescopic mechanism, a luminous body, an image acquisition module and an analysis module;
The device comprises a suspension mechanism, a telescopic mechanism, a light-emitting body, an image acquisition module, an analysis module and a control module, wherein the suspension mechanism is used for being suspended above the liquid level of the drilling liquid pool, the telescopic mechanism is connected with the suspension mechanism, the telescopic mechanism is connected with the upper end of the light-emitting body, the lower end of the light-emitting body extends to the bottom of the drilling liquid pool during initial measurement, the telescopic mechanism is used for adjusting the position of the light-emitting body in the drilling liquid pool, the image acquisition module is used for shooting an image of the contact part of the light-emitting body and the liquid level of the drilling liquid, and the analysis module is used for analyzing the image and obtaining the liquid level information of the drilling liquid pool based on scales on the surface of the light-emitting body; the illuminant includes:
the device comprises a column body and a plurality of soft strips, wherein the soft strips are uniformly distributed on the column body along the top end to the bottom end of the column body, one end of each soft strip is fixedly connected with the surface of the column body, the other end of each soft strip is used for swinging along with the flowing of drilling fluid, and a plurality of light-emitting elements are uniformly distributed on the soft strips and the column body; the image acquisition module is further used for continuously acquiring images of a plurality of luminous bodies in a first preset time period to obtain a first image set, the analysis module is further used for analyzing the first image set to judge whether soft strips are located in the silt layer, if so, the first thickness of the silt layer is obtained based on the position information of the soft strips located in the silt layer, and the luminous bodies are lifted upwards by a first distance based on the first thickness telescopic mechanism, wherein the size of the first distance is equal to that of the first thickness; the specific mode that the analysis module analyzes the first image set to judge whether the soft strip is positioned in the silt layer is as follows:
Marking the position and the form of each soft strip in each image in the first image set, obtaining the luminous brightness of each soft strip in each image in the first image set, and obtaining the position change information and the form change information of each soft strip for a plurality of continuous images, and judging that a soft strip is positioned in a silt layer if the position and the form of a certain soft strip are not changed and the luminous brightness is smaller than a brightness threshold value;
The device also comprises a floating block, a through hole is formed in the middle of the floating block, the column body penetrates through the through hole, and the floating block is connected with the column body in a sliding manner;
the image acquisition module is used for shooting an image of the contact part of the floating block and the drilling fluid liquid level, and the analysis module is used for analyzing the image and obtaining the drilling fluid liquid level information of the drilling fluid pool based on the scale of the surface of the corresponding illuminant of the floating block.
2. A drilling fluid level measurement device according to claim 1, wherein the second level measurement unit comprises:
the liquid level sensor comprises a first liquid level sensor, a second liquid level sensor, a DA module, a singlechip, an AD module, a display screen, a comparison circuit and an amplifying circuit;
The first liquid level sensor is connected with the DA module, the DA module is connected with the singlechip, the singlechip is connected with the AD module, and the AD module is connected with the display screen;
The second liquid level sensor is connected with a comparison circuit, the comparison circuit is connected with an amplifying circuit, and the amplifying circuit is connected with a drainage device controller of the drilling fluid pool.
3. The drilling fluid level measurement device according to claim 1, further comprising an obtaining unit, wherein the obtaining unit is configured to obtain PH information of the drilling fluid, and the judging unit is further configured to judge whether the PH value of the drilling fluid exceeds a PH threshold value, and if the PH value exceeds the PH threshold value, close the second level measurement unit and open the first level measurement unit.
4. A drilling fluid level measurement method based on a drilling fluid level measurement device according to any one of claims 1-3, the method comprising:
Obtaining type information of drilling fluid;
Judging whether the drilling fluid is foam drilling fluid or not based on the type information, if so, installing the illuminant in the drilling fluid pool, shooting an image of the contact part of the illuminant and the drilling fluid level, analyzing the image and obtaining the drilling fluid level information of the drilling fluid pool based on the scale of the illuminant surface; if the liquid level sensor is not installed in the drilling liquid pool, obtaining the drilling liquid level information of the drilling liquid pool based on the liquid level sensor.
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