CN110534284B - Inductive imaging combined three-axis coil - Google Patents
Inductive imaging combined three-axis coil Download PDFInfo
- Publication number
- CN110534284B CN110534284B CN201910645715.5A CN201910645715A CN110534284B CN 110534284 B CN110534284 B CN 110534284B CN 201910645715 A CN201910645715 A CN 201910645715A CN 110534284 B CN110534284 B CN 110534284B
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- coil
- vertical axis
- axial annular
- vertical
- framework
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
- H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
- H01F2005/027—Coils wound on non-magnetic supports, e.g. formers wound on formers for receiving several coils with perpendicular winding axes, e.g. for antennae or inductive power transfer
Abstract
The invention discloses an induction imaging combined three-axis coil, which comprises an axial annular coil framework, wherein the axial annular coil framework is sleeved and fixed on a mandrel, two vertical-axis rectangular coil frameworks are arranged at two ends of the axial annular coil framework, and a plurality of vertical-axis rectangular coil windings are wound between the two vertical-axis rectangular coil frameworks; the side surface of the axial annular coil framework is provided with a plurality of axial annular winding grooves, and axial annular coil windings are wound in the axial annular winding grooves. The coil framework can be wound with 1 axial annular coil and 4 vertical rectangular coils. The axial annular coil is perpendicular to the 4 vertical-axis rectangular coils, and the adjacent vertical-axis rectangular coils are also perpendicular and parallel to the vertical-axis rectangular coils. In practical application, the opposite rectangular coils are connected into a coil according to the winding direction, so that 3 coils which are vertical in pairs, namely a three-axis coil, are formed. The equivalent point of each coil of the triaxial coil is positioned in the center of the coil, so the coil design can ensure that the three axial coils transmit or receive concentrically.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of well logging, relates to a three-dimensional induction imaging well logging instrument, and particularly relates to an induction imaging combined three-axis coil.
[ background of the invention ]
The conventional array sensing has the advantages of dividing invasion profiles in detail, accurately determining true resistivity of the stratum and the like, but shows limitations when measuring an anisotropic oil reservoir. When the formation is not perpendicular to the radial direction of the instrument, the measured resistivity value of the inclined formation is far lower than the actual resistivity due to the influence of the nearby conductive formation, so that the reserves are underestimated; interlayer heterogeneity, and even intralayer heterogeneity, can affect the response of the logging tool. Additionally, in shale and parallel bedding thin sand-shale sequences, the log results are weighted averages of layers where the contribution of the lowest resistivity portion is greatest when the thickness of the layers is less than the vertical resolution of the induction logging tool, a phenomenon that can mask the characteristics of hydrocarbon layers. As an induction novel logging technology, the three-dimensional induction imaging logging instrument can improve the measurement precision of the formation resistivity of an inclined well and a horizontal well, can provide information such as the size and the direction of a formation dip angle and the like, and enhances the identification accuracy of a reservoir stratum.
In the triaxial coil used by the current three-dimensional induction imaging instrument, most of the axial coils are wound by adopting a uniformly grooved ceramic coil framework, so that the stability is better ensured; however, the vertical axis coil is limited by the structure, or the number of turns of the coil is small, the magnetic flux is small, and the induced signal is weak; or the structure is complex, the winding difficulty is high, and the symmetry is poor. These problems can have a great influence on the measurement accuracy of the three-dimensional sensing instrument.
[ summary of the invention ]
The invention aims to overcome the defects of the prior art and provide the induction imaging combined three-axis coil, which effectively improves the processing yield of a three-axis coil framework, obviously reduces the manufacturing cost of the framework and the damage rate in the winding process, improves the number of turns of a vertical axis coil, increases the emission of the coil and can ensure that the winding is not damaged, thereby achieving the aim of greatly improving the stability, symmetry and consistency of the three-axis coil.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
an induction imaging combined three-axis coil comprises an axial annular coil framework which is sleeved and fixed on a mandrel, two vertical-axis rectangular coil frameworks are installed at two ends of the axial annular coil framework, and a plurality of vertical-axis rectangular coil windings are wound between the two vertical-axis rectangular coil frameworks; the side surface of the axial annular coil framework is provided with a plurality of axial annular winding grooves, and axial annular coil windings are wound in the axial annular winding grooves; and a vertical axis coil branching clamping ring for dividing and arranging the middle wire harness of the vertical axis rectangular coil is arranged on the side surface of the axial annular coil framework.
The invention further improves the following steps:
an inner ring of the axial annular coil framework is provided with a combined triaxial coil positioning groove which is combined with a semicircular notch groove on the mandrel to form a positioning hole, and the triaxial coil is fixed on the mandrel by inserting the positioning pin.
The axial annular winding groove is provided with an axial annular coil winding groove changing surface along the axial direction.
The middle of the axial annular coil framework is provided with a groove surface connected with the vertical axis coil branching retainer ring, and the two sides of the axial annular coil framework are provided with smooth surfaces connected with the vertical axis rectangular coil framework.
The vertical axis rectangular coil framework is bonded on the smooth surfaces of two sides of the axial annular coil framework through high-temperature epoxy resin glue.
A plurality of vertical axis rectangular coil winding grooves, 4 vertical axis rectangular coil side lead grooves and 4 vertical axis rectangular coil side lead grooves are formed in the vertical axis rectangular coil framework and are uniformly distributed along the circumference; the inner side parts of the lead slots on the side of the 4 vertical-axis rectangular coils are vertical-axis rectangular coil passing surfaces.
And a vertical-axis rectangular coil winding and distributing groove used for distributing the middle wire harness of the vertical-axis rectangular coil is formed in the vertical-axis coil distributing clamp.
The winding and splitting slot of the vertical axis rectangular coil is provided with 1 opening and 3 lead slots in the vertical axis rectangular coil, and the 1 opening and the 3 lead slots in the vertical axis rectangular coil are uniformly distributed on the circumference.
The axial annular coil framework and the combined triaxial coil positioning grooves are made of silicon nitride ceramics.
The vertical axis rectangular coil framework and the vertical axis coil branching clamping ring are made of polyether-ether-ketone PEEK materials.
Compared with the prior art, the invention has the following beneficial effects:
the coil framework can be wound with 1 axial annular coil and 4 vertical rectangular coils. The axial annular coil is perpendicular to the 4 vertical-axis rectangular coils, and the adjacent vertical-axis rectangular coils are also perpendicular and parallel to the vertical-axis rectangular coils. In practical application, the opposite rectangular coils are connected into a coil according to the winding direction, so that 3 coils which are vertical in pairs, namely a three-axis coil, are formed. Each vertical axis rectangular coil is composed of 6 groups of rectangular coils, the 6 groups of rectangular coils are all in a parallel state, and only one wire in each group of rectangular coils needs to obliquely cross the winding slot so as to keep continuous winding. The equivalent point of each coil of the triaxial coil is positioned in the center of the coil, so the coil design can ensure that the three axial coils transmit or receive concentrically.
[ description of the drawings ]
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the construction of a vertical axis rectangular coil winding of the present invention;
FIG. 3 is a schematic diagram of the axial toroidal coil winding of the present invention;
FIG. 4 is a schematic view of the construction of the axial toroidal bobbin of the present invention;
FIG. 5 is a schematic view of the construction of a vertical axis rectangular bobbin of the present invention;
FIG. 6 is a schematic view of the structure of the split collar of the vertical axis coil of the present invention.
Wherein: 1-vertical axis rectangular coil framework; 2-vertical axis rectangular coil winding (the single-turn winding diagram is a schematic diagram; and the real winding is multi-turn winding); 3-a vertical axis coil branching collar; 4-winding of an axial annular coil; 5-axial annular coil skeleton; 6-combining three-axis coil positioning grooves; 7-axial annular winding grooves; 8-groove surface; 9-axial annular coil winding slot changing surface; 10-smooth surface; 11-vertical axis rectangular coil winding slot; 12-a vertical axis rectangular coil passing surface; 13-lead slot on the vertical axis rectangular coil side; 14-vertical axis rectangular coil winding and splitting slots; 15-a gap; 16-lead slot in vertical axis rectangular coil.
[ detailed description ] embodiments
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Various structural schematics according to the disclosed embodiments of the invention are shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and some details may be omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
In the context of the present disclosure, when a layer/element is referred to as being "on" another layer/element, it can be directly on the other layer/element or intervening layers/elements may be present. In addition, if a layer/element is "on" another layer/element in one orientation, then that layer/element may be "under" the other layer/element when the orientation is reversed.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the combined three-axis coil for induction imaging of the invention is composed of 1 axial annular coil framework 5, 2 vertical axis rectangular coil frameworks 1, 1 vertical axis coil branching collar 3, an axial annular coil winding 4 and a vertical axis rectangular coil winding 2. The axial annular coil framework 5 is a main framework of the triaxial coil and is used for winding the axial coil and is a main force bearing part of the triaxial coil, the circumferential surface of the middle section of the framework is carved with equal-diameter parallel semicircular grooves, the two side sections of the framework are smooth circumferential surfaces, the inner ring is provided with a combined triaxial coil positioning groove 6 and is made of silicon nitride ceramics; the vertical axis rectangular coil framework 1 is a matched framework of a triaxial coil and is used for winding the vertical axis coil, is made of polyether-ether-ketone PEEK, and is bonded on the smooth surfaces on the two sides of the main framework through high-temperature epoxy resin glue; the vertical axis coil branching clamping ring 3 is a matching part of a three-axis coil, an engraved groove is arranged on the outer ring of the clamping ring and is an opening clamping ring for positioning a middle wire harness of the vertical axis coil, the clamping ring is made of polyether-ether-ketone PEEK, and the clamping ring is bonded in a middle groove of a main framework through high-temperature epoxy resin glue. The concrete structure is as follows:
as shown in fig. 1-3, the combined three-axis coil bobbin includes a vertical-axis rectangular coil bobbin 1, a vertical-axis rectangular coil winding 2, a vertical-axis coil branching collar 3, an axial annular coil winding 4, and an axial annular coil bobbin 5. The inner ring of the axial annular coil framework 5 is provided with a combined triaxial coil positioning groove 6 which is combined with the semicircular notch groove on the mandrel to form a positioning hole, and the triaxial coil is fixed on the mandrel by inserting the positioning pin.
As shown in fig. 4, the axial annular coil bobbin 5 is made of silicon nitride, and has an axial annular winding groove 7 for winding the axial annular coil winding 4. The number and the length of the grooves of the three-axis coils in different arrays are different, the axial annular winding grooves 7 are not closed, and the axial annular coil winding groove changing surface 9 is arranged, so that the winding groove changing is convenient, and the winding is parallel to the axial direction and has continuity. The middle of the axial annular coil framework 5 is provided with a groove surface 8 adhered with the vertical axis coil branching collar 3, and the two sides are provided with smooth surfaces 10 adhered with the vertical axis rectangular coil framework 1.
As shown in fig. 5, the vertical axis rectangular coil frame 1 is made of PEEK material, and can be made into a universal piece for three-axis coils of different arrays. And the high-temperature epoxy resin adhesive is bonded on the smooth surfaces of two sides of the axial annular coil framework 5 and used for winding the vertical-axis rectangular coil winding 2. A plurality of vertical axis rectangular coil winding slots 11, 4 vertical axis rectangular coil side lead slots 13 and 4 vertical axis rectangular coil side lead slots 13 are formed in the vertical axis rectangular coil framework 1 and are uniformly distributed along the circumference; the inner parts of the lead slots 13 on the side of the 4 vertical-axis rectangular coils are vertical-axis rectangular coil wire passing surfaces 12
As shown in fig. 6, the vertical axis coil branching collar 3 is made of PEEK material, and has a vertical axis rectangular coil winding 2 branching groove for dividing and arranging the middle wire harness of the vertical axis rectangular coil, so that the vertical axis rectangular coil winding 2 bundles keep better regularity, and the consistency and symmetry of the vertical axis rectangular coil are improved. Be equipped with 1 opening 15 and 3 perpendicular axle rectangular coil middle lead wire grooves 16 on the 2 separated time grooves of perpendicular axle rectangular coil wire winding, have certain pliability, can break off with the fingers and thumb in the draw-in groove of edgewise installation in the middle of the ring coil skeleton in the moderate degree, can design for general, be fit for the triaxial coil of different arrays and use.
The principle of the invention is as follows:
the silicon nitride ceramic axial annular coil framework has the advantages of high strength, small temperature expansion coefficient and the like, and can ensure the stability of the coil in a high-temperature and high-pressure environment; the PEEK vertical-axis rectangular coil framework has the advantages of strong processability, high toughness, low cost, strong high-temperature performance and the like, can effectively reduce the processing difficulty and cost of the coil framework when used in cooperation with a silicon nitride ceramic axial annular coil framework, reduces the difficulty and risk of coil manufacturing, and improves the symmetry, repeatability and consistency of the coil. In addition, the vertical axis rectangular coil framework and the vertical axis coil branching clamping ring made of PEEK can be designed into a three-axis coil universal part, and the design and processing cost of the whole set of coil system is effectively reduced.
The axial annular coil framework 5 is simple in structure and convenient to process by using silicon nitride ceramics, the silicon nitride material has the advantages of high hardness, small expansion coefficient, acid resistance, high temperature and high pressure resistance and the like, and the axial annular coil framework 5 is used as a force bearing part of a triaxial coil and can effectively improve the stability of an instrument.
The vertical axis rectangular coil framework 1 and the vertical axis coil branching collar 3 have complex structures, and if silicon nitride ceramics are used for processing, the finished product rate is low, and the processing cost is high. In addition, if the vertical axis rectangular coil framework 1 and the vertical axis coil branching retainer ring 3 are processed by silicon nitride ceramics, after the outer ring is grooved, the cost of chamfering the groove edge is very high, the groove edge is not chamfered, the groove edge is very sharp, all the wire windings in direct contact with the groove edge can be cut by different degrees, the paint skin is damaged if the wire windings are light, the copper wire is damaged if the wire windings are heavy, the influence on the stability of three axes is more or less, and the influence cannot be accepted by manufacturing a high-performance three-axis coil. If the PEEK material with better high-temperature performance and better processing performance is used for processing, all the defects of the silicon nitride material processing are solved, the processing yield can be effectively improved, universal parts can be manufactured, the PEEK material is suitable for three-axis coils with different turns and different lengths, the design cost is obviously reduced, and the processing period is shortened.
The three-axis coil structure is formed by combining two coil frameworks made of different materials, and the risk of leakage of the three-axis coil structure can be reduced to a great extent. In general, the silicon nitride ceramic coil bobbin is subjected to outsourcing, and after the single coil is subjected to outsourcing, all structural information is leaked to be used as a core component of an instrument, which is skin pain. After the coil combination design is carried out by adopting two different materials, the silicon nitride ceramic coil framework and the PEEK material coil framework can be entrusted to different manufacturers for processing, and the good confidentiality effect is achieved on the overall structure of the coil.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (5)
1. An induction imaging combined three-axis coil is characterized by comprising an axial annular coil framework (5) which is sleeved and fixed on a mandrel, wherein two vertical-axis rectangular coil frameworks (1) are installed at two ends of the axial annular coil framework (5), and a plurality of vertical-axis rectangular coil windings (2) are wound between the two vertical-axis rectangular coil frameworks (1); the axial annular coil framework (5) is made of silicon nitride, a combined three-axis coil positioning groove (6) is formed in the inner ring, the combined three-axis coil positioning groove (6) is made of silicon nitride ceramics and is combined with a semicircular notch groove on the mandrel to form a positioning hole, and the three-axis coil is fixed on the mandrel by inserting a positioning pin; a plurality of axial annular winding grooves (7) are formed in the side face of the axial annular coil framework (5), axial annular coil winding groove changing faces (9) are formed in the axial annular winding grooves (7) along the axial direction, and axial annular coil windings (4) are wound in the axial annular winding grooves (7); a vertical axis coil branching clamping ring (3) used for dividing and arranging the middle wire harness of the vertical axis rectangular coil is arranged on the side surface of the axial annular coil framework (5); the vertical axis rectangular coil framework (1) and the vertical axis coil branching clamping ring (3) are made of polyether-ether-ketone PEEK materials, and the vertical axis rectangular coil framework (1) is bonded to the two sides of the axial annular coil framework (5) through high-temperature epoxy resin glue.
2. The combined triaxial coil for induction imaging according to claim 1, wherein the axial annular coil bobbin (5) has a slot surface (8) in the middle for connection with the vertical axis coil division collar (3) and smooth surfaces (10) on both sides for connection with the vertical axis rectangular coil bobbin (1).
3. The combined triaxial coil for induction imaging according to claim 1, wherein the vertical axis rectangular coil skeleton (1) is provided with a plurality of vertical axis rectangular coil winding slots (11), 4 vertical axis rectangular coil side lead slots (13), and the 4 vertical axis rectangular coil side lead slots (13) are uniformly arranged along the circumference; the inner side parts of the lead slots (13) on the side of the 4 vertical-axis rectangular coils are vertical-axis rectangular coil passing surfaces (12).
4. The combined triaxial coil for induction imaging according to claim 1, wherein the vertical axis coil branching collar (3) is provided with a vertical axis rectangular coil winding branching slot (14) for dividing and arranging the middle wire harness of the vertical axis rectangular coil.
5. The combined triaxial coil for induction imaging according to claim 4, wherein the vertical axis coil branching collar (3) is provided with 1 opening (15) and 3 lead slots (16) in the vertical axis rectangular coil, and the 1 opening (15) and the 3 lead slots (16) in the vertical axis rectangular coil are uniformly distributed on the circumference.
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| CN201910645715.5A CN110534284B (en) | 2019-07-17 | 2019-07-17 | Inductive imaging combined three-axis coil |
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| CN201910645715.5A CN110534284B (en) | 2019-07-17 | 2019-07-17 | Inductive imaging combined three-axis coil |
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| CN110534284B true CN110534284B (en) | 2022-05-06 |
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| CN112392462A (en) * | 2020-12-09 | 2021-02-23 | 中国石油天然气集团有限公司 | Receiving coil array for interlayer interface measurement and measurement system |
| US11931255B1 (en) | 2023-08-18 | 2024-03-19 | E-Valve Systems Ltd. | Prosthetic aortic valve pacing systems |
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| JPS5958801A (en) * | 1982-09-29 | 1984-04-04 | Toshiba Electric Equip Corp | Transformer bobbin |
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| EP1315178A1 (en) * | 2001-11-27 | 2003-05-28 | ABB Research Ltd. | Three dimensional winding arrangement |
| CN1610183A (en) * | 2003-10-20 | 2005-04-27 | 东光株式会社 | Triaxial antenna coil |
| CN101536252A (en) * | 2006-09-15 | 2009-09-16 | 哈里伯顿能源服务公司 | Multi-axial antenna and method for use in downhole tools |
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