CN212111827U - Deep sea transient electromagnetic detection receiving device - Google Patents
Deep sea transient electromagnetic detection receiving device Download PDFInfo
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- CN212111827U CN212111827U CN202020794813.3U CN202020794813U CN212111827U CN 212111827 U CN212111827 U CN 212111827U CN 202020794813 U CN202020794813 U CN 202020794813U CN 212111827 U CN212111827 U CN 212111827U
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Abstract
The utility model discloses a deep sea transition electromagnetic method surveys receiving arrangement, surveys receiving arrangement and includes: the device comprises a controller, a transmitting coil and a receiving coil, wherein the transmitting coil and the receiving coil are respectively connected with the controller; the receiving coil is characterized by comprising a first receiving area and a second receiving area, and by taking the plane where the transmitting coil is located as a reference plane, the orthographic projection of the first receiving area on the reference plane is located in the transmitting coil, and the orthographic projection of the second receiving area on the reference plane is located outside the transmitting coil; wherein a magnetic flux passing through the first receiving area and a magnetic flux passing through the second receiving area when the transmitting coil generates the primary field are equal. The utility model is used for solving the problem that the electromagnetic detection device in the prior art cannot receive surface layer data due to overlarge mutual inductance caused by overlarge detection energy; and the problem that deep data in the deep sea environment cannot be received in order to reduce the mutual inductance influence of the detection device.
Description
Technical Field
The utility model belongs to the technical field of the ocean exploration equipment, especially, relate to a deep sea transient electromagnetic method surveys receiving arrangement.
Background
The deep-sea hydrothermal polymetallic sulfide mineral is a resource rich in metal elements such as Cu, Pb, Zn, Au, Ag and the like, is usually applied to the sea floor with the water depth of 1200-3700 meters, and is widely distributed in geological environments such as ridges, island arcs, basins behind arcs and the like in the ocean. The ore body is accumulated in the range of hundreds of meters, is rich and shallow, is convenient for submarine exploitation, and has attractive resource development prospect.
At present, in the exploration of subsea hydrocarbon reservoirs, marine controlled source electromagnetic methods are mainly used, for example: imamura et al obtains the conductivity of the seabed sulfide covering layer and the thickness of sulfide ore by using a method of matching a vertical couple source and a horizontal couple source marine transient electromagnetic method. In 2011, Nakayama et al measured a 5m × 5m coaxial transceiver coil 1m to 10m above the sea floor, and the results showed that the marine time domain transient electromagnetic can effectively detect the boundary and buried depth of the submarine ore body. In 2014, Nakayama et al found that the subsea sulphide ore IP response was very significant by improving the coil measurement system.
In the related art, utility model No. 2011203666054 discloses a deep sea transient electromagnetic detection device, and the device transmitted signal is too strong, and the secondary field of mineral feedback is less strong, and receiving arrangement is mutual-inductive stronger, therefore there is the influence in the receipt of the device shallow layer. Patent application No. 201410092714. X's utility model discloses a transient transition electromagnetism method measuring device and method, and the device adopts two transmitting coil, and receiving coil is at the mode at the midmost, because the influence of twin coil, and the primary energy is basically consumed, and sea water environment in addition, therefore device detection depth and detection distance are less.
However, the existing electromagnetic measuring device generally has the problems that if the detection energy is improved, the mutual inductance is too large, and the surface layer data cannot be received; if the mutual inductance of the detection device needs to be reduced, the detection energy is small, and the deep data in the deep sea environment cannot be received.
SUMMERY OF THE UTILITY MODEL
The technical problem solved by the utility model is to provide a deep sea transient electromagnetic method detection receiving device, so as to solve the problems that the mutual inductance of the electromagnetic detection device is too large and the surface layer data can not be received due to the too large detection energy in the prior art; and the problems that detection energy is small and deep data in a deep sea environment cannot be received due to the fact that mutual inductance influence of the detection device is reduced are solved.
In order to achieve the above object, the utility model provides a deep sea transient electromagnetic method surveys receiving arrangement includes: the device comprises a controller, a transmitting coil and a receiving coil, wherein the transmitting coil and the receiving coil are respectively connected with the controller; the receiving coil is characterized by comprising a first receiving area and a second receiving area, and by taking the plane where the transmitting coil is located as a reference plane, the orthographic projection of the first receiving area on the reference plane is located in the transmitting coil, and the orthographic projection of the second receiving area on the reference plane is located outside the transmitting coil; wherein a magnetic flux passing through the first receiving area and a magnetic flux passing through the second receiving area when the transmitting coil generates the primary field are equal.
Preferably, the transmitting coil is parallel to the receiving coil.
Preferably, the relative positions of the receiving coil and the transmitting coil are variably set.
Preferably, the number of the receiving coils is multiple, and the multiple receiving coils are connected in series.
Preferably, the receiving coil is located directly above or directly below the transmitting coil.
Preferably, the outer contour of the transmitting coil and the outer contour of the receiving coil are both rectangular.
Preferably, the receiving coil and the transmitting coil are arranged at an interval in a vertical direction.
Preferably, the transmitting coil is filled with a non-conductive colloid and forms a sealed waterproof packaging structure after being cured.
In the scheme of this application, because receiving coil includes first receiving area and second receiving area, pass when transmitting coil produces the primary field the magnetic flux of first receiving area is with passing the magnetic flux of second receiving area is equal, can increase the transmission energy and eliminate or weaken the influence of primary field to receiving antenna coil simultaneously to eliminate or weaken receiving antenna coil and the induction transition process that produces when emission current closes, improved the secondary field signal to noise ratio of the underground medium that receiving antenna coil sensed greatly, improved transient electromagnetic detection's scope and detection depth.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a perspective view of a deep-sea transient electromagnetic detection receiving device according to an embodiment of the present invention;
fig. 2 is a plan view of the deep-sea transient electromagnetic method detection receiving device according to the embodiment of the present invention;
fig. 3 is a structural diagram of a deep-sea transient electromagnetic method detection receiving device according to an embodiment of the present invention;
fig. 4 is another plan view of the deep-sea transient electromagnetic method detecting and receiving device according to the embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model discloses a submarine hydrothermal solution sulphide is surveyed to towed deep sea Transient electromagnetic method (TEM for short), is a time domain artificial sources electromagnetic detection method who establishes on the basis of the electromagnetic induction principle. At the seafloor, the transmission return line Tx (magnetic source) transmits a primary pulsed magnetic field (commonly referred to as a primary field) that excites an induced eddy current i2 in the hydrothermal sulfide mineral body due to the change in magnetic flux acting on the hydrothermal sulfide mineral body at the instant the primary field is cut off, which is an eddy current field that decays with time, thereby exciting an induced electromagnetic field (commonly referred to as a secondary field) that changes with time. Since the secondary field contains abundant geoelectrical information such as the shape, size, position and conductivity of the hydrothermal sulfide well-conducting ore body on the seabed, the secondary field (or called response field) is observed by using the seabed receiving coil 300Rx during the intermission period of the primary pulse magnetic field, and the purpose of detecting the hydrothermal sulfide ore body on the seabed is achieved by extracting and analyzing the response information.
Referring to fig. 1 to 3, in order to achieve the above object, the present invention provides a deep-sea transient electromagnetic method detecting and receiving device, including: the device comprises a controller 100, a transmitting coil 200 and a receiving coil 300, wherein the transmitting coil 200 and the receiving coil 300 are respectively connected with the controller 100; the receiving coil 300 is characterized by comprising a first receiving area 310 and a second receiving area 320, wherein by taking the plane of the transmitting coil 200 as a reference plane, the orthographic projection of the first receiving area 310 on the reference plane is positioned in the transmitting coil 200, and the orthographic projection of the second receiving area 320 on the reference plane is positioned outside the transmitting coil 200; wherein the magnetic flux passing through the first receiving area 310 and the magnetic flux passing through the second receiving area 320 are equal when the transmitting coil 200 generates the primary field.
Wherein the controller 100 is a prior art for interacting with a mother ship and controlling the transmitting coil 200 and the receiving coil 300. The controller 100 may include an electromagnetic instrument main controller, an emission control unit, a data acquisition unit, a data storage unit, and a communication unit, and the emission control unit, the data acquisition unit, the data storage unit, and the communication unit are all connected to the electromagnetic instrument main controller through a communication bus. The electromagnetic instrument main controller receives and receives a working instruction of a mother ship through the communication unit and transmits the working instruction to the transmitting control unit, the transmitting control unit controls the insulated gate bipolar transistor module, electromagnetic waves are transmitted through the transmitting coil 200, and a synchronous trigger signal is transmitted when the working state of the transmitting control unit is stable; the transmitting control unit can measure the working current information of the transmitting coil 200, and the data acquisition unit is used for acquiring the data information obtained by the receiving coil 300 and transmitting the data information to the electromagnetic instrument main controller. The electromagnetic instrument main controller sends the working current information of the transmitting coil 200 and the data information of the receiving coil 300 to the mother ship through the communication unit for the mother ship to analyze.
In the scheme of the application, because the receiving coil 300 comprises the first receiving area 310 and the second receiving area 320, when the transmitting coil 200 generates a primary field, the magnetic flux passing through the first receiving area 310 is equal to the magnetic flux passing through the second receiving area 320, so that the transmitting energy can be increased, and the influence of the primary field on the receiving antenna coil can be eliminated or weakened, thereby eliminating or weakening the induction transition process generated when the transmitting current of the receiving antenna coil is turned off, greatly improving the signal-to-noise ratio of a secondary field signal of an underground medium induced by the receiving antenna coil, and improving the range and the detection depth of transient electromagnetic detection.
As a preferred embodiment of the present invention, the transmitting coil 200 may be parallel to the receiving coil 300 so as to adjust the relative positions of the receiving coil 300 and the transmitting coil 200. The relative positions of the receiving coil 300 and the transmitting coil 200 are variably set so that the magnetic flux passing through the first receiving region 310 and the magnetic flux passing through the second receiving region 320 are equal or nearly equal when the primary field generated by the transmitting coil 200 is adjusted before entering water. The receiving coil 300 may be positioned directly above or below the transmitting coil 200 to facilitate viewing of the positional relationship.
Referring to fig. 4, as an alternative embodiment of the present invention, the number of the receiving coils 300 may be multiple, and the receiving coils 300 are connected in series. The position of the plurality of receiving coils 300 into the transmitting coil 200 is adjustable such that the magnetic flux of the first receiving area 310 and the magnetic flux of the second receiving area 320 of the primary field generated by the transmitting coil 200 passing through all receiving coils 300 are always equal or nearly equal.
Further, the outer contour of the transmitting coil 200 and the outer contour of the receiving coil 300 may both be rectangular or hexagonal. The receiving coil 300 and the transmitting coil 200 are disposed at an interval in the vertical direction. The transmitting coil 200 is filled with a non-conductive adhesive, which may be epoxy resin, and cured to form a sealed waterproof package structure.
In addition, as another embodiment, the deep-sea transient electromagnetic method detection receiving device may include: the device comprises a controller 100, an adjusting mechanism, a transmitting coil 200 and a receiving coil 300, wherein the transmitting coil 200 and the receiving coil 300 are respectively connected with the controller 100; the receiving coil 300 comprises a first receiving area 310 and a second receiving area 320, and by taking the plane where the transmitting coil 200 is located as a reference plane, the orthographic projection of the first receiving area 310 on the reference plane is located inside the transmitting coil 200, and the orthographic projection of the second receiving area 320 on the reference plane is located outside the transmitting coil 200; the receiving coil 300 is fixed on the adjusting mechanism, and the receiving coil 300 performs position adjustment under the action of the adjusting mechanism; wherein the controller 100 controls the adjusting mechanism to adjust the position of the receiving coil 300 according to the current input data of the transmitting coil 200 so that the magnetic flux passing through the first receiving area 310 and the magnetic flux passing through the second receiving area 320 are equal when the transmitting coil 200 generates the primary field.
Wherein the position adjustment includes a distance adjustment and an angle adjustment between the transmitting coil 200 and the receiving coil 300. The adjustment mechanism has a multi-axis rectilinear degree of freedom and a multi-axis rotational degree of freedom, and the relative positions of the receiver coil 300 and the transmitter coil 200 are changed by moving or rotating the receiver coil 300 by the adjustment mechanism so that the magnetic flux passing through the first receiver area 310 and the magnetic flux passing through the second receiver area 320 are equal when the transmitter coil 200 generates a primary field.
In the solution of the present application, since the receiving coil 300 includes the first receiving area 310 and the second receiving area 320, the adjusting mechanism can move or rotate the receiving coil 300 to change the relative positions of the receiving coil 300 and the transmitting coil 200 according to the current input data of the transmitting coil 200, so that the magnetic flux passing through the first receiving area 310 and the magnetic flux passing through the second receiving area 320 are equal when the transmitting coil 200 generates the primary field. Therefore, the transmitting energy is increased, the influence of the primary field on the receiving antenna coil is eliminated or weakened, the induction transition process of the receiving antenna coil generated when the transmitting current is turned off is eliminated or weakened, the signal to noise ratio of the secondary field signal of the underground medium induced by the receiving antenna coil is greatly improved, and the range and the detection depth of transient electromagnetic detection are improved.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. A deep-sea transient electromagnetic detection receiving device, comprising: the device comprises a controller, a transmitting coil and a receiving coil, wherein the transmitting coil and the receiving coil are respectively connected with the controller; the receiving coil is characterized by comprising a first receiving area and a second receiving area, and by taking the plane where the transmitting coil is located as a reference plane, the orthographic projection of the first receiving area on the reference plane is located in the transmitting coil, and the orthographic projection of the second receiving area on the reference plane is located outside the transmitting coil; wherein a magnetic flux passing through the first receiving area and a magnetic flux passing through the second receiving area when the transmitting coil generates the primary field are equal.
2. The deep-sea transient electromagnetic prospecting receiving device of claim 1, wherein the transmitting coil is parallel to the receiving coil.
3. The deep-sea transient electromagnetic prospecting receiving device of claim 1, wherein the relative positions of the receiving coil and the transmitting coil are variably set.
4. The deep-sea transient electromagnetic detection receiving device of claim 1, wherein the number of the receiving coils is multiple, and the receiving coils are connected in series.
5. The deep-sea transient electromagnetic detection receiving device of claim 1, wherein the receiving coil is located directly above or below the transmitting coil.
6. The deep-sea transient electromagnetic detection receiving device of any one of claims 1 to 5, wherein the outer contour of the transmitting coil and the outer contour of the receiving coil are rectangular.
7. The deep-sea transient electromagnetic detection receiving device of any one of claims 1 to 5, wherein the receiving coil and the transmitting coil are vertically spaced apart.
8. The deep-sea transient electromagnetic detection receiving device as claimed in any one of claims 1 to 5, wherein the transmitting coil is filled with a non-conductive adhesive, and the non-conductive adhesive is cured to form a sealed waterproof packaging structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020794813.3U CN212111827U (en) | 2020-05-14 | 2020-05-14 | Deep sea transient electromagnetic detection receiving device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020794813.3U CN212111827U (en) | 2020-05-14 | 2020-05-14 | Deep sea transient electromagnetic detection receiving device |
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| CN212111827U true CN212111827U (en) | 2020-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089426A (en) * | 2021-05-26 | 2022-02-25 | 华北科技学院(中国煤矿安全技术培训中心) | Improved U-shaped spiral source transient electromagnetic full-space directional detection method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089426A (en) * | 2021-05-26 | 2022-02-25 | 华北科技学院(中国煤矿安全技术培训中心) | Improved U-shaped spiral source transient electromagnetic full-space directional detection method |
| CN114089426B (en) * | 2021-05-26 | 2023-11-10 | 华北科技学院(中国煤矿安全技术培训中心) | Improved U-shaped spiral source transient electromagnetic full-space directional detection method |
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