CN118070623B - Ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution - Google Patents
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Abstract
The invention belongs to the technical field of deepwater drilling overflow monitoring, and particularly relates to an ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution. According to the method, a sound field sensitivity cloud picture is drawn according to sound pressure and particle vibration speed data, and then the marine riser annular energy density cloud picture can be calculated and obtained, the information window is represented by the marine riser annular energy density cloud picture, and the visualization processing of the information window is realized. The ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution comprises the following steps: establishing an ultrasonic underwater early overflow monitoring simulation model; simulating and calculating sound field parameters in the annulus of the marine riser; drawing a sensitivity cloud chart of the annulus sound field of the marine riser; according to the condition of the operation site, determining the adiabatic compression coefficient and density of drilling fluid used in the site and the invasion gas when overflow occurs; drawing an annular energy density cloud picture of the riser; and characterizing an ultrasonic overflow monitoring information window.
Description
Technical Field
The invention belongs to the technical field of deepwater drilling overflow monitoring, and particularly relates to an ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution.
Background
In recent years, as the demand for petroleum and natural gas in the global energy market continues to rise, the development and production of land and shallow oil and gas resources enter a bottleneck period, and deep water oil and gas resources gradually become an important source of global energy supply. Deep water oil and gas resource development is accompanied by a series of serious challenges such as safety risks, technical problems, environmental protection and the like, wherein overflow risks are one of the most prominent challenges. If overflow cannot be found and controlled in time, serious accidents such as blowout (kick) and the like can be caused, so that the overflow can be found effectively in early stage and time, and the overflow has extremely important practical significance for reducing the well control risk.
The existing early overflow monitoring technology is influenced by factors such as water depth, seabed stratum complexity, shallow high-pressure gas and the like, has various problems, and leaves great hidden trouble for drilling operation. The wellhead overflow monitoring technologies such as a slurry tank liquid level increment method and a slurry outlet flow rate method have obvious hysteresis, and overflow cannot be quantitatively identified. In addition, the underground overflow monitoring technologies such as a logging while drilling method, a pressure measurement while drilling method and the like also have the problems of long data processing period, high device cost and the like, and limit the large-scale use of the underground overflow monitoring technologies.
On the contrary, the ultrasonic riser overflow monitoring technology has the advantages of non-invasiveness, high monitoring precision, relatively low cost and the like, and overcomes the defects of the existing early overflow monitoring technology, so that the ultrasonic riser overflow monitoring technology has a better application prospect and is widely focused by students at home and abroad. The ultrasonic Doppler overflow monitoring technology is the overflow monitoring technology which is fully researched at present and is most successfully applied, and naturally becomes a research hotspot of the current overflow monitoring technology.
The prior art ultrasonic doppler flood monitoring technique typically uses two transducers, one of which is the transmitting transducer and one of which is the receiving transducer, and the area where the transmitting transducer and the receiving transducer beams overlap is referred to as the information window. Referring to fig. 1, fig. 1 is a schematic view of an ultrasonic doppler information window in the prior art. Specifically, by monitoring overflow information in the information window, whether overflow occurs in the drilling process can be judged according to the overflow information in the information window. The range and the position of the information window are important reasons for influencing the monitoring precision; however, further researches show that the prior art cannot effectively realize the visualization processing of the information window, and further cannot accurately know the range and the position of the information window. The blank of the information window visualization technology causes the lack of quantitative indexes of the arrangement mode of the transducers in the existing ultrasonic Doppler overflow monitoring technology, so that the optimal monitoring effect cannot be ensured, and the monitoring precision of the ultrasonic Doppler overflow monitoring technology is seriously affected. Therefore, it is needed to develop a method for visualizing the ultrasonic overflow monitoring information window to solve the above-mentioned problems.
Disclosure of Invention
The invention provides an ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution. The technology fills the technical blank in the existing ultrasonic overflow monitoring information window visualization technology, and provides a quantization index for determining the layout scheme of the transducer on the drilling site.
In order to solve the technical problems, the invention adopts the following technical scheme:
the ultrasonic overflow monitoring information window visualization method based on the sound field sensitivity distribution comprises the following steps:
step S101: establishing an ultrasonic underwater early overflow monitoring simulation model;
The structure of the ultrasonic underwater early overflow monitoring simulation model at least comprises a water isolation pipe, a drill rod, drilling fluid and a transmitting transducer Receiving transducer/>；
Step S102: let the transmitting transducerTransmitting ultrasonic waves with designated frequency, and obtaining sound field parameters in the annulus of the marine riser in the state through simulation calculation;
Transducer to be transmitted And receiving transducer/>Reciprocity, reciprocal rear emission transducer/>Conversion to receiving transducer/>Reciprocal post-receiving transducer/>Conversion to transmitting transducer/>; Let the reciprocal transmitting transducer/>Transmitting ultrasonic waves with the same frequency, and obtaining sound field parameters in the annulus of the reciprocal rear marine riser through simulation calculation;
step S103: step S102 of extracting the transmitting transducers respectively Sound field parameter in annulus of water-proof pipe under ultrasonic wave state of transmitting designated frequency and transmitting transducer/>, after reciprocityTransmitting sound pressure and particle vibration speed data in sound field parameters in the annulus of the water-proof pipe under the state of ultrasonic waves with the same frequency, calculating the sound field sensitivity distribution condition of the annulus of the water-proof pipe, and drawing a sound field sensitivity cloud chart of the annulus of the water-proof pipe;
Step S104: according to the condition of the operation site, determining the adiabatic compression coefficient and density of drilling fluid used in the site and the invasion gas when overflow occurs;
step S105: according to the heat insulation compression coefficient and density of the drilling fluid used in the site and the invasion gas when overflow occurs determined in the step S104, the obtained marine riser annulus sound field sensitivity cloud picture is drawn in combination with the step S103, the marine riser annulus energy density is calculated, and the marine riser annulus energy density cloud picture is drawn;
the ultrasonic overflow monitoring information window is characterized by using a marine riser annular energy density cloud chart, so that the visualization of the ultrasonic overflow monitoring information window is realized.
Preferably, the geometric dimension and the material parameter of each structure in the ultrasonic underwater early overflow monitoring simulation model established in the step S101 are all configured the same as the actual drilling operation site;
Wherein the transmitting transducer Receiving transducer/>Both of which are composed of two parts of the selective piezoelectric sheet and the matching layer.
Preferably, in step S102, the transmitting transducer is made to transmitIn the process of transmitting ultrasonic waves with specified frequency, the frequency range of the ultrasonic waves with the specified frequency is 100 kHz-1 MHz;
the sound field parameters in the marine riser annulus at least comprise sound pressure, particle vibration speed, sound intensity, total sound pressure level and total acoustic acceleration.
Preferably, calculating the riser annulus sound field sensitivity distribution in step S103 includes calculating sound field sensitivity distribution data S 1 sensitive to adiabatic compression coefficient variation and calculating sound field sensitivity distribution data S 2 sensitive to density variation;
wherein, sound field sensitivity distribution data S 1 sensitive to adiabatic compression coefficient variation satisfies: Formula (1);
In the formula (1), p 1 is a transmitting transducer Sound pressure in the sound field generated by excitation, p 2 is the transmitting transducer/>, after the transmitting and receiving transducers are reciprocalExciting sound pressure in the generated sound field;
The sound field sensitivity distribution data S 2 sensitive to the density variation satisfies: Formula (2);
in the formula (2) of the compound, For transmitting transducer/>Exciting particle vibration velocity in the generated sound field; /(I)For transmitting transducer/>, after the reciprocity of transmitting and receiving transducersExciting particle vibration velocity in the generated sound field.
Preferably, in the step S105, the annular energy density ED of the riser tube satisfies: formula (3);
In the formula (3), S 1 is sound field sensitivity distribution data sensitive to a change in adiabatic compression coefficient, S 2 is sound field sensitivity distribution data sensitive to a change in density, κ f is an adiabatic compression coefficient of drilling fluid, κ g is an adiabatic compression coefficient of an invasion gas, ρ f is the density of the drilling fluid, and ρ g is the density of the invasion gas.
The invention provides an ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution, which comprises the following steps: step S101: establishing an ultrasonic underwater early overflow monitoring simulation model; step S102: simulating and calculating sound field parameters in the annulus of the marine riser; step S103: calculating the sensitivity distribution condition of the annulus sound field of the water isolation pipe and drawing a sensitivity cloud chart of the annulus sound field of the water isolation pipe; step S104: according to the condition of the operation site, determining the adiabatic compression coefficient and density of drilling fluid used in the site and the invasion gas when overflow occurs; step S105: calculating the annulus energy density of the water-proof pipe and drawing a cloud chart of the annulus energy density of the water-proof pipe; and characterizing an ultrasonic overflow monitoring information window. Compared with the prior art, the ultrasonic overflow monitoring information window visualization method based on the sound field sensitivity distribution with the step characteristics has at least the following technical advantages:
1. The technical blank of information window visualization in the existing ultrasonic overflow monitoring technology is filled, and the information window visualization method based on sound field sensitivity distribution can accurately and intuitively reflect the range and the position of the information window.
2. The visual content of the information window can be utilized to provide a quantization index for the determination of the layout scheme of the transducer on the drilling site, so that the optimal monitoring effect is achieved, and the monitoring precision of the ultrasonic overflow monitoring technology is greatly improved.
3. The method has strong applicability and wide application range, and can meet the use requirements of various types and geometric sizes of riser ultrasonic overflow monitoring technologies.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
FIG. 1 is a schematic view of an ultrasonic overflow monitoring information window in the prior art;
Fig. 2 is a schematic flow chart of an ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution;
FIG. 3 is a schematic diagram of an established ultrasonic underwater early overflow monitoring simulation model;
FIG. 4 is a schematic diagram of sound field sensitivity distribution data S 1 that is sensitive to adiabatic compression coefficient variations;
FIG. 5 is a schematic diagram of sound field sensitivity distribution data S 2 that is sensitive to density variations;
FIG. 6 is a cloud illustration of riser annulus energy density.
Reference numerals: 1-a drill rod; 2-a riser; 3-receiving transducer(Post-reciprocal conversion to receiving transducer/>)) ; 4-Transmitting transducer/>(Post-reciprocal conversion to receiving transducer/>)) ; 5-Drilling fluid.
Detailed Description
The invention provides an ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution. The technology fills the technical blank in the existing ultrasonic overflow monitoring information window visualization technology, and provides a quantization index for determining the layout scheme of the transducer on the drilling site.
The invention provides an ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution, which is shown in fig. 2 and comprises the following steps:
step S101: establishing an ultrasonic underwater early overflow monitoring simulation model;
the structure of the ultrasonic underwater early overflow monitoring simulation model at least comprises a water isolation pipe, a drill rod, drilling fluid and a transmitting transducer Receiving transducer/>。
It should be noted that, as a preferred embodiment of the present invention, the geometric dimensions and material parameters of each structure in the ultrasonic underwater early overflow monitoring simulation model established in step S101 are the same as those of the actual drilling operation site; wherein the transmitting transducerReceiving transducer/>Both of which are composed of two parts of the selective piezoelectric sheet and the matching layer.
It should be noted that the description is given here by taking an ultrasonic underwater early overflow monitoring simulation model established by finite element simulation software such as COMSOL Multiphysics as an example. Wherein the structure of the ultrasonic underwater early overflow monitoring simulation model at least comprises a water isolation pipe, a drill rod, drilling fluid and a transmitting transducerReceiving transducer/>. And specifically, a transducer to which an excitation signal is coupled is referred to as a transmitting transducer/>The transducer for collecting the response parameters of the sound field in the annulus of the water isolation pipe is called a receiving transducer/>; After reciprocity, the transmitting transducer/>Then convert to receiving transducer/>Receiving transducer/>Then convert to transmit transducer/>; Wherein the transmitting transducer/>Receiving transducer/>The distribution modes of the waterproof pipe are uniformly distributed along the same circumference at certain intervals and cling to the outer wall of the waterproof pipe.
The ultrasonic Doppler overflow monitoring technology requires that the direction of an ultrasonic wave beam and the direction of the flow velocity of fluid form a certain included angle, and an oblique incidence plane is used for cutting a marine riser to form an elliptical cross section by taking an oblique incidence of an included angle of 30 degrees as an example. Referring to FIG. 3, FIG. 3 is a schematic diagram of an established ultrasonic underwater early overflow monitoring simulation model (reference numerals in FIG. 3 may refer to 1-drill pipe, 2-riser, 3-receiving transducer)(Post-reciprocal conversion to receiving transducer/>)) ; 4-Transmitting transducer/>(Post-reciprocal conversion to receiving transducer/>)) ; 5-Drilling fluid); wherein the transmitting transducer/>Receiving transducer/>The included angle with the riser center line may be referenced as 10 °.
After step S101 is completed, step S102 is continued: let the transmitting transducerTransmitting ultrasonic waves with designated frequency, and obtaining sound field parameters in the annulus of the marine riser in the state through simulation calculation;
Transducer to be transmitted And receiving transducer/>Reciprocity, reciprocal rear emission transducer/>Conversion to receiving transducer/>Reciprocal post-receiving transducer/>Conversion to transmitting transducer/>; Let the reciprocal transmitting transducer/>And transmitting ultrasonic waves with the same frequency, and obtaining sound field parameters in the annulus of the reciprocal rear marine riser through simulation calculation.
It should be noted that, as a preferred embodiment of the present invention, the transmitting transducer is set in step S102In the process of transmitting ultrasonic waves with a specified frequency, the frequency range of the ultrasonic waves with the specified frequency is 100 kHz-1 MHz. The sound field parameters in the annulus of the water isolation pipe at least comprise sound pressure, particle vibration speed, sound intensity, total sound pressure level and total acoustic acceleration. Will transmit transducer/>And receiving transducer/>Reciprocity refers to: only the original receiving transducer is changed without changing the positions of the twoChanging the access excitation signal to the transmitting transducer/>Original transmitting transducer/>Changing access acquisition signal into receiving transducerI.e. the functions of the two are interchanged.
Specifically, let the transmitting transducer beAnd transmitting ultrasonic waves with the frequency of 500kHz, and performing simulation calculation to obtain sound field parameters in the annular space of the marine riser in the state. And then the transmitting transducer/>And receiving transducer/>Reciprocity, i.e. the original receiving transducerChanging the access excitation signal to the transmitting transducer/>Original transmitting transducer/>Changing access acquisition signal into receiving transducerReciprocal transmitting transducer/>And the ultrasonic wave with the frequency of 500kHz is emitted, and the sound field parameters in the annulus of the reciprocal back marine riser are obtained through simulation calculation.
After step S102 is completed, step S103 is continued: step S102 of extracting the transmitting transducers respectivelySound field parameter in annulus of water-proof pipe under ultrasonic wave state of transmitting designated frequency and transmitting transducer/>, after reciprocityAnd transmitting sound pressure and particle vibration speed data in sound field parameters in the annulus of the water isolation pipe under the state of ultrasonic waves with the same frequency, calculating the sound field sensitivity distribution condition of the annulus of the water isolation pipe, and drawing a sound field sensitivity cloud chart of the annulus of the water isolation pipe.
As a preferred embodiment of the present invention, calculating the riser annulus sound field sensitivity distribution in step S103 includes calculating sound field sensitivity distribution data S 1 sensitive to adiabatic compression coefficient variation and calculating sound field sensitivity distribution data S 2 sensitive to density variation;
wherein, sound field sensitivity distribution data S 1 sensitive to adiabatic compression coefficient variation satisfies: Formula (1);
In the formula (1), p 1 is a transmitting transducer Sound pressure in the sound field generated by excitation, p 2 is the transmitting transducer/>, after the transmitting and receiving transducers are reciprocalExciting sound pressure in the generated sound field;
The sound field sensitivity distribution data S 2 sensitive to the density variation satisfies: Formula (2);
in the formula (2) of the compound, For transmitting transducer/>Exciting particle vibration velocity in the generated sound field; /(I)For transmitting transducer/>, after the reciprocity of transmitting and receiving transducersExciting particle vibration velocity in the generated sound field.
Specifically, the following specific examples are given as examples for explanation. Firstly extracting sound pressures (p 1 and p 2) and particle vibration velocity in annulus sound field parameters calculated in the two conditions in the step S102、/>) The method comprises the steps of data, calculating the sensitivity distribution condition of the annulus sound field of the water isolation pipe, and drawing a sensitivity cloud chart of the annulus sound field of the water isolation pipe; and then calculating to obtain sound field sensitivity distribution data S 1 which is sensitive to the change of the adiabatic compression coefficient and sound field sensitivity distribution data S 2 which is sensitive to the change of the density in the marine riser annular sound field sensitivity cloud picture. Referring to fig. 4 and 5, fig. 4 is a schematic diagram of sound field sensitivity distribution data S 1 sensitive to a change in adiabatic compression coefficient, and fig. 5 is a schematic diagram of sound field sensitivity distribution data S 2 sensitive to a change in density.
After step S103 is completed, step S104 is continued: according to the condition of the operation site, the adiabatic compression coefficient and density of the drilling fluid used in the site and the invasion gas when overflow occurs are determined.
Specifically, the explanation is given with the following examples. In the simulation process, in order to facilitate the unified calculation process, the adiabatic compression coefficient of the drilling fluid is 4.565 multiplied by 10 -10 Pa-1, and the density is 998.20 Kg/m 3; the adiabatic compression coefficient of the gas intruded upon occurrence of flooding was 7.075×10 -6 Pa-1 and the density was 1.20 Kg/m 3.
After step S104 is completed, step S105 is continued: according to the heat insulation compression coefficient and density of the drilling fluid used in the site and the invasion gas when overflow occurs determined in the step S104, the obtained marine riser annulus sound field sensitivity cloud picture is drawn in combination with the step S103, the marine riser annulus energy density is calculated, and the marine riser annulus energy density cloud picture is drawn;
the ultrasonic overflow monitoring information window is characterized by using a marine riser annular energy density cloud chart, so that the visualization of the ultrasonic overflow monitoring information window is realized.
The ultrasonic overflow monitoring information window refers to the overlapping area of the beam of the transmitting transducer and the beam of the receiving transducer. Thus, as a preferred embodiment of the present invention, the riser annulus energy density ED of step S105 satisfies: formula (3);
In the formula (3), S 1 is sound field sensitivity distribution data sensitive to a change in adiabatic compression coefficient, S 2 is sound field sensitivity distribution data sensitive to a change in density, κ f is an adiabatic compression coefficient of drilling fluid, κ g is an adiabatic compression coefficient of an invasion gas, ρ f is the density of the drilling fluid, and ρ g is the density of the invasion gas.
Specifically, the explanation is given with the following examples. It should be noted that, the adiabatic compression coefficient and density of the drilling fluid and the invaded gas are obtained in step S104, and the sound field sensitivity cloud is obtained in step S103. Referring now to fig. 6, fig. 6 shows a riser annulus energy density cloud. It is worth noting that the highlighted area in the annular energy density cloud chart of the water isolation pipe is an information window for ultrasonic overflow monitoring, and therefore the visual processing process of the information window is successfully realized.
The ultrasonic overflow monitoring information window visualization method based on the sound field sensitivity distribution draws a sound field sensitivity cloud image according to sound pressure and particle vibration speed data, calculates a water-proof pipe annular energy density cloud image by combining the adiabatic compression coefficient and density of drilling fluid and invasion gas, and characterizes the information window according to the thermal insulation compression coefficient and density, so that the information window visualization is realized.
The invention provides an ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution, which comprises the following steps: step S101: establishing an ultrasonic underwater early overflow monitoring simulation model; step S102: let the transmitting transducerTransmitting ultrasonic waves with designated frequency, and obtaining sound field parameters in the annulus of the marine riser in the state through simulation calculation; transmit transducer/>And receiving transducer/>Reciprocity; let the reciprocal transmitting transducer/>Transmitting ultrasonic waves with the same frequency, and obtaining sound field parameters in the annulus of the reciprocal rear marine riser through simulation calculation; step S103: calculating the sensitivity distribution condition of the annulus sound field of the water isolation pipe and drawing a sensitivity cloud chart of the annulus sound field of the water isolation pipe; step S104: according to the condition of the operation site, determining the adiabatic compression coefficient and density of drilling fluid used in the site and the invasion gas when overflow occurs; step S105: calculating the annulus energy density of the water-proof pipe and drawing a cloud chart of the annulus energy density of the water-proof pipe; and characterizing an ultrasonic overflow monitoring information window. Compared with the prior art, the ultrasonic overflow monitoring information window visualization method based on the sound field sensitivity distribution with the step characteristics has at least the following technical advantages:
1. The technical blank of information window visualization in the existing ultrasonic overflow monitoring technology is filled, and the information window visualization method based on sound field sensitivity distribution can accurately and intuitively reflect the range and the position of the information window.
2. The visual content of the information window can be utilized to provide a quantization index for the determination of the layout scheme of the transducer on the drilling site, so that the optimal monitoring effect is achieved, and the monitoring precision of the ultrasonic overflow monitoring technology is greatly improved.
3. The method has strong applicability and wide application range, and can meet the use requirements of various types and geometric sizes of riser ultrasonic overflow monitoring technologies.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The ultrasonic overflow monitoring information window visualization method based on the sound field sensitivity distribution is characterized by comprising the following steps of:
step S101: establishing an ultrasonic underwater early overflow monitoring simulation model;
The structure of the ultrasonic underwater early overflow monitoring simulation model at least comprises a water isolation pipe, a drill rod, drilling fluid and a transmitting transducer Receiving transducer/>；
Step S102: let the transmitting transducerTransmitting ultrasonic waves with designated frequency, and obtaining sound field parameters in the annulus of the marine riser in the state through simulation calculation;
Transducer to be transmitted And receiving transducer/>Reciprocity, reciprocal rear emission transducer/>Conversion to receiving transducer/>Reciprocal post-receiving transducer/>Conversion to transmitting transducer/>; Let the reciprocal transmitting transducer/>Transmitting ultrasonic waves with the same frequency, and obtaining sound field parameters in the annulus of the reciprocal rear marine riser through simulation calculation;
step S103: step S102 of extracting the transmitting transducers respectively Sound field parameter in annulus of water-proof pipe under ultrasonic wave state of transmitting designated frequency and transmitting transducer/>, after reciprocityTransmitting sound pressure and particle vibration speed data in sound field parameters in the annulus of the water-proof pipe under the state of ultrasonic waves with the same frequency, calculating the sound field sensitivity distribution condition of the annulus of the water-proof pipe, and drawing a sound field sensitivity cloud chart of the annulus of the water-proof pipe;
Step S104: according to the condition of the operation site, determining the adiabatic compression coefficient and density of drilling fluid used in the site and the invasion gas when overflow occurs;
step S105: according to the heat insulation compression coefficient and density of the drilling fluid used in the site and the invasion gas when overflow occurs determined in the step S104, the obtained marine riser annulus sound field sensitivity cloud picture is drawn in combination with the step S103, the marine riser annulus energy density is calculated, and the marine riser annulus energy density cloud picture is drawn;
the ultrasonic overflow monitoring information window is characterized by using a marine riser annular energy density cloud chart, so that the visualization of the ultrasonic overflow monitoring information window is realized.
2. The ultrasonic overflow monitoring information window visualization method based on the sound field sensitivity distribution according to claim 1, wherein the geometric dimensions and material parameters of each structure in the ultrasonic underwater early overflow monitoring simulation model established in the step S101 are the same as those of the actual drilling operation site;
Wherein the transmitting transducer Receiving transducer/>Both of which are composed of two parts of the selective piezoelectric sheet and the matching layer.
3. The ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution according to claim 1, wherein the transmitting transducer is caused to transmit in step S102In the process of transmitting ultrasonic waves with specified frequency, the frequency range of the ultrasonic waves with the specified frequency is 100 kHz-1 MHz;
the sound field parameters in the marine riser annulus at least comprise sound pressure, particle vibration speed, sound intensity, total sound pressure level and total acoustic acceleration.
4. The ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution according to claim 1, wherein calculating the riser annulus sound field sensitivity distribution condition in step S103 includes calculating sound field sensitivity distribution data S 1 sensitive to adiabatic compression coefficient variation and calculating sound field sensitivity distribution data S 2 sensitive to density variation;
wherein, sound field sensitivity distribution data S 1 sensitive to adiabatic compression coefficient variation satisfies: Formula (1);
In the formula (1), p 1 is a transmitting transducer Sound pressure in the sound field generated by excitation, p 2 is the transmitting transducer/>, after the transmitting and receiving transducers are reciprocalExciting sound pressure in the generated sound field;
The sound field sensitivity distribution data S 2 sensitive to the density variation satisfies: Formula (2);
in the formula (2) of the compound, For transmitting transducer/>Exciting particle vibration velocity in the generated sound field; /(I)For transmitting transducer/>, after the reciprocity of transmitting and receiving transducersExciting particle vibration velocity in the generated sound field.
5. The ultrasonic overflow monitoring information window visualization method based on sound field sensitivity distribution according to claim 4, wherein the riser annulus energy density ED in step S105 satisfies: formula (3);
In the formula (3), S 1 is sound field sensitivity distribution data sensitive to a change in adiabatic compression coefficient, S 2 is sound field sensitivity distribution data sensitive to a change in density, κ f is an adiabatic compression coefficient of drilling fluid, κ g is an adiabatic compression coefficient of an invasion gas, ρ f is the density of the drilling fluid, and ρ g is the density of the invasion gas.
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