CN111207981B - Method for manufacturing three-layer heterogeneous flat plate electrode core - Google Patents

Abstract

The invention relates to a three-layer non-homogeneous flat electrode core manufacturing method, which comprises: designing and manufacturing three-layer non-homogeneous flat plate pressing plates, designing electrode holes on the pressing plates; producing electrodes with three lengths, and stripping the lower end of the electrodes with a length of 1.5 cm Patent leather; make electrode accessories, the electrode accessories are thick-walled cylinders with an axial center hole, six grooves are evenly distributed on the outer circumference of the thick-walled cylinders, and the grooves are semi-cylindrical grooves; The electrodes are tied to the electrode accessories and fixed, and the upper ends of the electrodes are flush; three-layer heterogeneous flat electrode cores are made, and the electrodes are inserted into the core through the electrode holes of the three-layer heterogeneous flat plates with electrode accessories, and electrodes of different lengths are inserted into their respective Specified depth; open the rubber band, remove the electrode assembly, and lift out the pressure plate. The electrodes of the invention are arranged at accurate positions in the plane and longitudinal directions, which solves the problem of accurately layered insertion of the electrodes in the three-layer non-homogeneous flat core, and solves the problem of the accuracy of the electrode space coordinates.

Description

Three-layer heterogeneous flat electrode core fabrication method

Technical field:

The invention relates to the field of artificial core preparation technology, in particular to a preparation method for a three-layer non-homogeneous flat electrode core.

Background technique:

In the field of petroleum scientific research, the production of artificial cores is very extensive, but the production technology of related electrodes and fractures needs to be further improved. In the experiments of oil development research, the precise arrangement of electrodes in space determines the accuracy of the description of the remaining oil distribution on the plane and between layers. .

Invention content:

An object of the present invention is to provide a three-layer heterogeneous plate electrode core manufacturing method, which is used to solve the problem of accurate electrode arrangement in an artificial electrode core.

The technical solution adopted by the present invention to solve the technical problem is as follows: this three-layer non-homogeneous flat electrode core manufacturing method comprises the following steps:

(1) Design a three-layer non-homogeneous flat platen, the design thickness of the three-layer non-homogeneous flat platen is 30mm, the length and width of the three-layer non-homogeneous flat platen are determined according to the core production mold, and the number of electrode holes is designed according to the experimental needs. , each group of three pairs of electrode holes, the three pairs of electrode holes are evenly distributed on the same circumference, and the two electrode holes of each pair are located on the same diameter;

(2) Make three-layer non-homogeneous flat plate pressing plate, select aluminum alloy plate with suitable hardness, and use CNC machine tool for drilling processing according to the design;

(3) Make electrodes, make two electrodes each with three lengths of 10cm, 8.5cm and 7cm, the diameter of the electrode is 1-1.5mm, and the lower end of the electrode is 1.5cm long to peel off the paint;

(4) Make electrode accessories. The electrode accessories are thick-walled cylindrical objects with an axial center hole. Six grooves are evenly distributed on the outer circumference of the thick-walled cylindrical object. The grooves are semi-cylindrical grooves and six concave grooves. The length of the groove is equal to the height of the thick-walled cylinder, and the groove is used to place the electrodes. Put the upper ends of the electrodes made in step (3) into the grooves to ensure that the top of each electrode is flush with the top of the electrode accessories, and then tie it with a rubber band. On the electrode accessories, fix them, two electrodes with a length of 7cm are located on the same diameter, two electrodes with a length of 8.5cm are located on the same diameter, and two electrodes with a length of 10cm are located on the same diameter;

(5) To make three-layer non-homogeneous flat electrode cores, the first step is to place the mold, mix quartz sand and epoxy resin glue of different meshes in a certain proportion, and rub until uniform to obtain three core mixtures, which are divided into three parts. The three layers are placed in the mold, and the three heterogeneous layers are the bottom layer, the middle layer and the top layer respectively; the second step is to cover the three layers of non-homogeneous flat platen, and press down to press the core to 5.5cm; the third step , use electrode accessories to insert the electrode into the core through the electrode holes of the three-layer heterogeneous plate; the fourth step, continue to press the core from 5.5cm to 4.5cm, and insert six electrodes of different lengths of 10cm, 8.5cm, and 7cm into the respective designated Depth; the fifth step, open the rubber band, take out the electrode accessories, and take out the pressure plate. Each electrode will be arranged in the core according to the specified position and depth. Among them, the 10cm-long electrode pair is inserted into the bottom layer, and the test is the bottom layer, 8.5 The electrode pair of cm is inserted into the middle layer, and the middle layer is tested, and the electrode pair of 7cm length is inserted into the upper layer, and the upper layer is tested.

Step (1) of the above scheme, a total of 41 groups of electrodes are designed on the medium pressure plate. Each group of 6 electrodes is evenly distributed in a circle with a diameter of 6mm. The diameter of each electrode hole is 2mm. The homogeneous layer is beneficial to save the electrode arrangement space on the plane, and is also beneficial to the comparison of data in the longitudinal direction.

In step (2) of the above scheme, the length of the three-layer non-homogeneous flat plate is 538 mm and the width is 508 mm, and a square is drawn on it. The side length of the square is 500 mm. The electrode groups are 4mm, 4mm, 4mm, and 34mm, and the electrode groups are distributed at a distance of 22.5mm from the periphery of the square. The electrode groups are evenly distributed in seven rows and seven columns at equal intervals.

In step (3) of the above scheme, the electrode material is enameled wire, and the electrodes with lengths of 10cm, 8.5cm, and 7cm are of different colors, so that after the electrodes are inserted into the core, the heterogeneous layers monitored by the electrodes can be distinguished. The height is 1.5cm, and the bottom of the electrode is 1.5cm long to remove the paint.

In step (4) of the above scheme, the diameter of the electrode fitting is 6mm, the height is 10mm, the diameter of the groove is 1.5mm, and the electrode is inserted into the core through the electrode hole, which ensures the straightness of the electrode and the accuracy of the electrode space coordinates.

The present invention has the following beneficial effects:

1. The present invention adopts a new process. The electrode is inserted into the core by the combination of the pressure plate with the electrode hole and the electrode accessories, which ensures the accurate spatial position of the electrode and the vertical degree of the electrode in the core.

2. The thickness of the conventional flat core is 4.5cm, and the specifications are usually 30*30*4.5cm, 50*50*4.5cm, 60*60*4.5cm. Three layers of heterogeneous cores, each of which is 1.5cm long, the invention can simultaneously insert electrodes into the core during the core pressing process, so that the electrodes must be accurately placed in each layer, and the electrodes are placed vertically in the core. ; Three pairs of electrodes can accurately monitor different layers in the longitudinal direction, and monitor the same point in the plane, and the electrodes remain vertical. It provides a favorable guarantee for the processing of the remaining oil distribution and displacement front position data in the later stage of the experiment, and is of great significance for accurately describing the remaining oil distribution.

3. The present invention evenly distributes 41 groups of electrodes, and each group of three pairs of electrodes monitors the same point, which is conducive to saving electrode arrangement space. It is more conducive to accurately describe the differences in the resistivity field and the distribution of remaining oil in the transverse and longitudinal directions.

4. The electrode of the present invention adopts an enameled wire with a diameter of 1~1.5mm, and the paint at the designated position is peeled off to avoid the interference between layers.

Description of drawings:

FIG. 1 is a schematic diagram of the design structure of the pressing plate of the present invention.

FIG. 2 is a schematic diagram of the space design of the electrode group of the present invention.

FIG. 3 is a schematic view of the structure of the electrode fittings of the present invention.

FIG. 4 is a schematic diagram of the electrode assembly of the present invention.

Fig. 5 is a schematic diagram of the pressed core of the present invention.

In the picture: 1 three-layer heterogeneous flat platen, 2 electrode holes, 3 grooves, 4 electrodes, 5 pressure monitoring point holes, 6 well holes, 7 three-layer heterogeneous plate, 8 well inserts, 9 flat plate pressure plates.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings:

With reference to Figures 1 to 5, the three-layer heterogeneous plate electrode core production method is to make three-layer heterogeneous plate electrode cores, using aluminum alloy plates with a certain thickness and fixed size as the pressure plate, on the pressure plate according to the design in advance. Good electrode layout diagram, processing electrode jacks. Design the number of 2 electrode holes on the platen according to the research needs. Combined with the electrode 4 insertion accessories, the electrode can be inserted into the core. Specifically:

(1) Use solidworks software to design a three-layer heterogeneous flat platen. The design thickness of the three-layer heterogeneous flat platen 1 is 30mm, and the length and width are determined according to the core making mold. The number of groups of electrodes 4 is designed according to the experimental requirements. For example, 41 groups of electrode holes 2 are designed on a 508*538*30mm platen, as shown in Figure 1. In addition, pressure monitoring point holes 5 and well holes 6 are also set up. The three-layer heterogeneous layer at the same point on the plane is monitored in the form of a group, which is conducive to saving the electrode arrangement space on the plane and is also conducive to the comparison of data in the longitudinal direction. Electrode hole 2, the diameter of electrode hole 2 is 2mm, evenly distributed in a circle with a diameter of 6mm, 1-1 and 1-2 are a pair of electrodes, 2-1 and 2-2 are a pair of electrodes, 3-1 and 3- 2 is a pair of electrodes, as shown in Figure 2;

Each group of three pairs of 6 electrode holes is evenly distributed in a circle with a diameter of 6mm, and the diameter of each electrode hole 2 is 2mm, as shown in Figure 2. 1-1 and 1-2 are a pair of electrodes, 2-1 and 2 -2 is a pair of electrodes, 3-1 and 3-2 are a pair of electrodes. Three pairs of electrodes monitor three heterogeneous layers at the same point on the plane.

(2) To make three layers of non-homogeneous flat platen, select an aluminum alloy plate with suitable hardness, and its length*width*height is 538*508*30mm. According to the design, use CNC machine tools for drilling processing; draw a square on the platen, its size is 500*500mm, and the distances from the long and short sides of the aluminum alloy plate are 4mm, 4mm, 4mm, and 34mm respectively. Electrodes 4 are distributed at a distance of 22.5 mm from the periphery of the square, and the electrodes are evenly distributed in seven rows and seven columns at equal intervals.

(3) Making electrodes, the electrode material is enameled wire. The lengths of the electrodes 4 are respectively 10 cm, 8.5 cm and 7 cm, and the electrodes of the three lengths are of different colors, so that the electrodes 4 can be inserted into the core to distinguish the heterogeneous layers monitored by the electrodes. The height of each non-homogeneous layer is 1.5 cm, therefore, the lower end of the electrode is 1.5 cm long to remove paint.

(4) Make electrode accessories, its size: diameter is 6mm, height is 10mm, the diameter of the semi-cylindrical groove 3 on the circumferential surface is 1.5mm, and the six grooves 3 are evenly distributed, as shown in Figure 3. The groove 3 is used to discharge the electrode, and then the electrode 4 is fixed with a rubber band, so that the upper end of the electrode 4 is aligned with the top of the electrode accessory, and ensure that the top is flush, and electrodes with different lengths of 10cm, 8.5cm, and 7cm can be inserted. The specified depth, as shown in Figure 4, allows the 10cm electrode to be inserted vertically into the lowermost heterogeneous layer, the 8.5cm electrode to be inserted vertically into the middle heterogeneous layer, and the 7cm electrode to be inserted vertically into the uppermost non-homogeneous layer. Homogeneous layer, the thickness of the pressure plate is 30mm, and the electrode is inserted into the core through the electrode hole, which ensures the straightness of the electrode and the accuracy of the electrode space coordinates. The middle layer, the 7cm long electrode pair tested is the top layer.

(5) To make three-layer non-homogeneous flat electrode cores, the first step is to place the mold, mix quartz sand and epoxy resin glue of different meshes in a certain proportion, and rub until uniform to obtain three kinds of mixtures, which are layered. into the mold. In the second step, cover the pressure plate and press the core to 5.5cm. In the third step, the electrode 4 is inserted into the core through the electrode hole 2 on the platen with the electrode fitting. The fourth step, continue to press the core from 5.5cm to 4.5cm. The fifth step, open the rubber band, take out the electrode accessories, and lift out the pressure plate. Electrodes will be placed in the core at the specified location and depth.

Example 1:

In this example, a 508*538*30mm three-layer non-homogeneous flat electrode core is prepared.

(1) Use solidworks software to design the platen. A total of 40 groups of electrodes are designed on the platen, and the 40 groups of electrodes are equally spaced. Each group of 6 electrodes is evenly distributed in a circle with a diameter of 6mm. 1-1 and 1-2 are a pair of electrodes. 2-1 and 2-2 are a pair of electrodes, and 3-1 and 3-2 are a pair of electrodes, as shown in Figures 1 and 2.

(2) Select a suitable aluminum block and process it into an aluminum alloy plate of 508*538*30mm; according to the design of the pressure plate, draw a square on the aluminum plate, the size of which is 500*500mm, and the distance between the long and short sides of the aluminum alloy plate is 500*500mm. The edges are 4mm, 4mm, 4mm, and 34mm, respectively. Draw the positions of the electrodes and drill holes.

(3) Make electrodes with three lengths of 10cm, 8.5cm and 7cm, and take a length of 1.5cm at the lower end of the electrode to remove the paint.

(4) Make electrode accessories with a diameter of 6mm and a height of 10mm, and process six evenly distributed grooves on the circumferential surface. The diameter of the semi-cylindrical groove is 1.5mm, as shown in Figure 3.

(5) Make three layers of non-homogeneous flat electrode cores, place the mold, mix quartz sand and glue of different meshes in proportion to obtain three mixtures, add them to the mold in layers, cover with a pressure plate and press to 5.5cm.

(6) Put the electrode into the groove of the electrode fitting, and tie the electrode with a rubber band, as shown in Figure 4. Continue to insert the electrode into the core, and press the core from 5.5cm to 4.5cm, as shown in Figure 5. Finally, open the rubber band, take out the electrode accessories, and lift out the pressure plate.

The invention is to make three layers of non-homogeneous flat electrode cores, design electrode holes on the pressing plate, and arrange the electrodes inside the core during the core pressing process. The electrodes monitor the same point on the plane at the same time, which is beneficial to save the electrode arrangement space. Therefore, the three-layer heterogeneous layer flat electrode core fabrication method is of great significance for the displacement experiments of petroleum artificial cores and the improvement of the artificial core preparation process.

Claims (5)

1. a three-layer heterogeneous flat plate electrode rock core manufacturing method is characterized in that: Step (1), design a three-layer non-homogeneous plate pressing plate, the design thickness of the three-layer non-homogeneous plate pressing plate is 30mm, the length and width of the three-layer non-homogeneous plate pressing plate are determined according to the core production mold, and the electrode holes are designed according to the experimental needs. Number of groups, three pairs of electrode holes in each group, three pairs of electrode holes are evenly distributed on the same circumference, and two electrode holes in each pair are located on the same diameter; Step (2), making three layers of non-homogeneous flat plate pressing plate, selecting aluminum alloy plate, according to the design, using CNC machine tool for drilling processing; Step (3), making electrodes, making two electrodes each with three lengths of 10cm, 8.5cm, and 7cm, the electrode diameter is 1-1.5mm, and the lower end of the electrode is 1.5cm long to peel off the paint; Step (4), making electrode accessories, the electrode accessories are thick-walled cylindrical objects with an axial center hole, and six grooves are evenly distributed on the outer circumferential surface of the thick-walled cylindrical object, and the grooves are semi-cylindrical grooves. The length of each groove is equal to the height of the thick-walled cylinder, and the groove is used to place electrodes. Put the upper ends of the electrodes made in step (3) into the grooves respectively to ensure that the top of each electrode is flush with the top of the electrode fittings, and then use a rubber Ribs are tied to the electrode fittings for fixing. Two electrodes with a length of 7cm are located on the same diameter, two electrodes with a length of 8.5cm are located on the same diameter, and two electrodes with a length of 10cm are located on the same diameter; Step (5), making three-layer non-homogeneous flat electrode cores. In the first step, put the molds, mix quartz sand and epoxy resin glue of different mesh numbers in a certain proportion, and rub them until uniform to obtain three core mixtures , put it into the mold in three layers, and the three heterogeneous layers are the lowermost layer, the middle layer, and the uppermost layer respectively; in the second step, cover the three layers of heterogeneous flat plate pressing plates, and press down to press the core to 5.5cm; In the third step, the electrode is inserted into the core through the electrode holes of the three-layer non-homogeneous plate with electrode accessories; in the fourth step, the core is pressed from 5.5cm to 4.5cm, and six electrodes with different lengths of 10cm, 8.5cm, and 7cm are inserted into the cores. The specified depth; the fifth step, open the rubber band, take out the electrode accessories, and take out the pressure plate. Each electrode will be arranged in the core according to the specified position and depth. Among them, the 10cm-long electrode pair is inserted into the bottom layer, and the test is the bottom layer. , the electrode pair of 8.5cm is inserted into the middle layer, the middle layer is tested, the electrode pair of 7cm length is inserted into the upper layer, and the upper layer is tested. 2. The method for making three-layer non-homogeneous flat-plate electrode cores according to claim 1, characterized in that: the pressure plate is designed with 41 groups of electrodes in total, and each group of 6 electrodes is evenly distributed in a circle with a diameter of 6mm, and each The diameter of each electrode hole is 2mm, and the three pairs of electrodes monitor three layers of heterogeneous layers at the same point on the plane, which saves the electrode arrangement space on the plane and is conducive to the comparison of data in the longitudinal direction. 3. The method for making a three-layer non-homogeneous flat plate electrode core according to claim 2, wherein in the step (2), the three-layer non-homogeneous flat plate pressing plate is 538 mm long and 508 mm wide. Draw a square on it, the side length of the square is 500mm, the distance between the long side and the short side of the aluminum alloy plate is 4mm, 4mm, 4mm, 34mm respectively, and the electrode group starts to be distributed at 22.5mm from the surrounding of the square. Arranged in seven columns evenly spaced. 4. The method for making a three-layer non-homogeneous flat electrode core according to claim 3, wherein in the step (3), the electrode material is enameled wire, and the electrodes with lengths of 10cm, 8.5cm, and 7cm respectively use different s color. 5 . The method for manufacturing a three-layer non-homogeneous flat electrode core according to claim 4 , wherein in the step (4), the diameter of the electrode fittings is 6 mm, the height is 10 mm, the diameter of the groove is 1.5 mm, and the diameter of the electrode is 1.5 mm. 6 . Insert the core through the electrode hole, the electrode is straight, and the electrode space coordinate is accurate.

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