CN111207981B - Method for manufacturing three-layer heterogeneous flat plate electrode core - Google Patents
Method for manufacturing three-layer heterogeneous flat plate electrode core Download PDFInfo
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- CN111207981B CN111207981B CN202010133374.6A CN202010133374A CN111207981B CN 111207981 B CN111207981 B CN 111207981B CN 202010133374 A CN202010133374 A CN 202010133374A CN 111207981 B CN111207981 B CN 111207981B
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Abstract
The invention relates to a method for manufacturing a three-layer heterogeneous flat plate electrode core, which comprises the following steps: designing and manufacturing a three-layer heterogeneous flat plate pressing plate, wherein an electrode hole is designed on the pressing plate; manufacturing electrodes with three lengths, and taking the length of 1.5cm from the lower end of the electrode to strip off the paint coat; manufacturing an electrode accessory, wherein the electrode accessory is a thick-wall cylinder with an axial center hole, six grooves are uniformly distributed on the outer circumferential surface of the thick-wall cylinder, and the grooves are semi-cylindrical grooves; binding the electrode on the electrode accessory by using a rubber band, and fixing, wherein the upper end of the electrode is level; manufacturing three-layer heterogeneous flat plate electrode cores, inserting electrodes into the cores through electrode holes of the three-layer heterogeneous flat plates by using electrode fittings, and inserting the electrodes with different lengths into the cores by the respective specified depths; and opening the rubber band, taking out the electrode fittings, and taking out the pressing plate. The electrodes are accurately arranged in the plane and the longitudinal direction, so that the problem of accurate space coordinate accuracy of the electrodes due to accurate layered insertion of the electrodes in three-layer heterogeneous flat rock cores is solved.
Description
The technical field is as follows:
the invention relates to the field of artificial core preparation processes, in particular to a method for manufacturing a three-layer heterogeneous flat plate electrode core.
Background art:
the artificial core is widely manufactured in the field of petroleum research, but related manufacturing technologies such as electrodes, cracks and the like are required to be further improved. In the experiment of oil development research, the accurate arrangement of the electrodes in space determines the accuracy of the description of the distribution of the residual oil on the plane and between layers. .
The invention content is as follows:
the invention aims to provide a three-layer heterogeneous flat plate electrode core manufacturing method which is used for solving the problem of accurate arrangement of electrodes in an artificial electrode core.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for manufacturing the three-layer heterogeneous flat electrode core comprises the following steps:
(1) designing a three-layer heterogeneous flat plate pressing plate, wherein the design thickness of the three-layer heterogeneous flat plate pressing plate is 30mm, the length and width of the three-layer heterogeneous flat plate pressing plate are determined according to a core manufacturing mold, the number of groups of electrode holes is designed according to experimental needs, three pairs of electrode holes are arranged in each group, the three pairs of electrode holes are uniformly distributed on the same circumference, and each pair of two electrode holes are positioned on the same diameter;
(2) manufacturing a three-layer heterogeneous flat plate pressing plate, selecting an aluminum alloy plate with proper hardness, and drilling by using a numerical control machine according to the design;
(3) manufacturing two electrodes with three lengths of 10cm, 8.5cm and 7cm, wherein the diameter of each electrode is 1-1.5mm, and the lower end of each electrode is 1.5cm long for stripping off paint;
(4) manufacturing an electrode accessory, wherein the electrode accessory is a thick-wall cylindrical object with an axial center hole, six grooves are uniformly distributed on the outer circumferential surface of the thick-wall cylindrical object, the grooves are semi-cylindrical grooves, the lengths of the six grooves are equal to the height of the thick-wall cylindrical object, the grooves are used for placing electrodes, the upper ends of the electrodes manufactured in the step (3) are respectively placed in the grooves, the top ends of the electrodes are enabled to be flush with the top of the electrode accessory, then the electrodes are tied on the electrode accessory by rubber bands and fixed, two electrodes 7cm long are located on the same diameter, two electrodes 8.5cm long are located on the same diameter, and two electrodes 10cm long are located on the same diameter;
(5) preparing three-layer heterogeneous flat electrode cores, firstly, placing a mold, mixing quartz sand and epoxy resin glue with different meshes according to a certain proportion, rubbing the mixture until the mixture is uniform to obtain three core mixtures, and placing the three core mixtures into the mold in three layers, wherein the three heterogeneous layers are respectively a lowermost layer, a middle layer and an uppermost layer; covering three layers of heterogeneous flat pressing plates, and pressing down to press the core to 5.5 cm; thirdly, inserting an electrode into the rock core through electrode holes of three layers of heterogeneous flat plates by using an electrode accessory; fourthly, continuously pressing the rock core from 5.5cm to 4.5cm, and inserting six electrodes with different lengths of 10cm, 8.5cm and 7cm into respective appointed depths; and fifthly, opening the rubber band, taking out the electrode fittings, taking out the pressing plate, arranging the electrodes in the rock core according to the set positions and depths, wherein a 10 cm-long electrode pair is inserted into the lowest layer, the lowest layer is tested, an 8.5 cm-long electrode pair is inserted into the middle layer, the middle layer is tested, a 7 cm-long electrode pair is inserted into the uppermost layer, the uppermost layer is tested, and three non-homogeneous layers at the same point on the plane are monitored in an electrode group mode.
In the scheme, 41 groups of electrodes are designed on the pressing plate in the step (1), 6 electrodes in each group are uniformly distributed in a circle with the diameter of 6mm, the diameter of each electrode hole is 2mm, three non-homogeneous layers at the same point on the three pairs of electrode monitoring planes are beneficial to saving of electrode arrangement space on the planes and comparison of data in the longitudinal direction.
In the step (2) of the scheme, the three-layer heterogeneous flat plate pressing plate is 538 mm long and 508 mm wide, a square is drawn on the pressing plate, the side length of the square is 500mm, the distance between the edge of the square and the edge of the long side and the edge of the short side of the aluminum alloy plate are respectively 4mm, 4mm, 4mm and 34mm, electrode groups are distributed at the position 22.5mm away from the periphery of the square, and the electrode groups are uniformly distributed in seven rows and seven columns at equal intervals.
According to the scheme, in the step (3), the electrode material is enameled wires, the electrodes with the lengths of 10cm, 8.5cm and 7cm are in different colors, so that heterogeneous layers monitored by the electrodes can be distinguished after the electrodes are inserted into the rock core, the height of each heterogeneous layer is 1.5cm, and the electrodes are taken down to the length of 1.5cm to remove paint coats.
According to the technical scheme, in the step (4), the diameter of the electrode accessory is 6mm, the height of the electrode accessory is 10mm, the diameter of the groove is 1.5mm, the electrode is inserted into the rock core through the electrode hole, the straight degree of the electrode is guaranteed, and meanwhile the accuracy of the spatial coordinate of the electrode is guaranteed.
The invention has the following beneficial effects:
1. the invention adopts a new process, and the electrode is inserted into the rock core in a mode of combining the pressing plate with the electrode hole and the electrode accessory, so that the accurate spatial position of the electrode and the vertical degree of the electrode in the rock core are ensured.
2. Conventional flat plate cores have a thickness of 4.5cm, with the gauge typically being 30 x 4.5cm, 50 x 4.5cm, 60 x 4.5 cm. Three layers of heterogeneous rock cores, each layer is 1.5cm, electrodes can be simultaneously inserted into the rock cores in the rock core pressing process, the electrodes can be accurately distributed into each layer, and the electrodes are vertically distributed in the rock cores; the three pairs of electrodes can accurately monitor different layers in the longitudinal direction, the same point is monitored on the plane, and the electrodes are kept vertical. The method provides favorable guarantee for the processing of the residual oil distribution and the displacement front edge position data in the later period of the experiment, and has important significance for accurately describing the residual oil distribution.
3. The invention has the advantages that 41 groups of electrodes are uniformly distributed, and each group of three pairs of electrodes monitors the same point, thereby being beneficial to saving the electrode arrangement space. The method is more beneficial to accurately describing the differences of the resistivity fields and the residual oil distribution in the transverse direction and the longitudinal direction.
4. The electrode of the invention adopts the enameled wire with the diameter of 1-1.5mm, and the paint at the designated position is stripped, thereby avoiding the interference between layers.
Description of the drawings:
FIG. 1 is a schematic view of the design structure of the pressure plate of the present invention.
FIG. 2 is a schematic view of the spatial design of the electrode assembly according to the present invention.
FIG. 3 is a schematic view of the structure of the electrode assembly of the present invention.
Fig. 4 is a schematic view of the electrode assembly of the present invention.
Fig. 5 is a schematic representation of a pressed core of the present invention.
In the figure: 1 three layers of heterogeneous flat pressing plates, 2 electrode holes, 3 grooves, 4 electrodes, 5 pressure monitoring point holes, 6 well holes, 7 three layers of heterogeneous flat pressing plates, 8 well plug-ins and 9 flat pressing plates.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
referring to fig. 1-5, the method for manufacturing the three-layer heterogeneous flat plate electrode core is to manufacture the three-layer heterogeneous flat plate electrode core, use an aluminum alloy flat plate with a certain thickness and a fixed size as a pressing plate, and process electrode jacks on the pressing plate according to a pre-designed electrode layout structure diagram. The number of sets of electrode holes 2 in the pressure plate is designed according to research requirements, and the electrodes can be inserted into the rock core by combining with an electrode 4 insertion fitting. The method specifically comprises the following steps:
(1) three-layer heterogeneous flat plate pressing plates are designed by using solidworks software, the thickness of the three-layer heterogeneous flat plate pressing plate 1 is 30mm, and the length and the width are determined according to a core manufacturing mold. The number of groups of electrodes 4 is designed according to experimental needs, for example, 41 groups of electrode holes 2 are designed on a pressing plate with the thickness of 508 × 538 × 30mm, as shown in fig. 1, in addition, pressure monitoring point holes 5 and well holes 6 are also arranged, and three heterogeneous layers at the same point on a plane are monitored in the form of an electrode group, so that the electrode arrangement space on the plane is saved, and the data comparison in the longitudinal direction is facilitated. An electrode hole 2, the diameter of the electrode hole 2 is 2mm, the electrode hole is uniformly distributed by a circle with the 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 figure 2;
each group of three pairs of 6 electrode holes is uniformly distributed in a circle with the 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 are a pair of electrodes, and 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) Three-layer heterogeneous flat plate pressing plates are manufactured, and aluminum alloy plates with proper hardness are selected, and the length, the width and the height of the aluminum alloy plates are 538, 508 and 30 mm. According to the design, a numerical control machine tool is used for drilling; squares of 500 x 500mm size were drawn on the press plates, 4mm, 4mm, 34mm from the edges of the long and short sides of the aluminium alloy sheet respectively. Electrodes 4 are distributed at a position 22.5mm away from the periphery of the square, and the electrodes are uniformly distributed in seven rows and seven columns at equal intervals.
(3) And (4) manufacturing an electrode, wherein the electrode material adopts an enameled wire. The length of the electrode 4 is 10cm, 8.5cm and 7cm respectively, and the electrodes with the three lengths adopt different colors so as to distinguish the heterogeneous layer monitored by the electrode after the electrode 4 is inserted into the rock core. The height of each heterogeneous layer was 1.5cm, so the lower end of the electrode was depaletized to a length of 1.5 cm.
(4) Manufacturing an electrode fitting, wherein the size of the electrode fitting is as follows: the diameter is 6mm, the height is 10mm, the diameter of the semi-cylindrical groove 3 on the circumferential surface is 1.5mm, and six grooves 3 are uniformly distributed, as shown in figure 3. The groove 3 is used for discharging electrodes, then the electrodes 4 are bound with rubber bands to be fixed, the upper ends of the electrodes 4 are aligned with the top ends of electrode accessories, the top ends are enabled to be flush, electrodes with different lengths of 10cm, 8.5cm and 7cm can be inserted into specified depths, as shown in figure 4, the electrodes with the length of 10cm are vertically inserted into the heterogeneous layer of the lowest layer, the electrodes with the length of 8.5cm are vertically inserted into the heterogeneous layer of the middle layer, the electrodes with the length of 7cm are vertically inserted into the heterogeneous layer of the uppermost layer, the pressing plate is 30mm thick, the electrodes are inserted into the rock core through the electrode holes, the straightness of the electrodes is guaranteed, the accuracy of electrode space coordinates is guaranteed, the electrodes with the length of 10cm are used for testing the lowest layer, the electrodes with the length of 8.5cm are used for testing the middle layer, and the electrodes with the length of 7cm are used for testing the uppermost layer.
(5) The method comprises the following steps of manufacturing a three-layer heterogeneous flat electrode core, firstly, placing a mold, mixing quartz sand and epoxy resin glue with different meshes according to a certain proportion, rubbing the mixture to be uniform to obtain three mixtures, and placing the three mixtures into the mold in layers. And secondly, covering a pressing plate to press the core to 5.5 cm. Third, the electrode 4 is inserted into the core through the electrode hole 2 in the platen using an electrode fitting. And fourthly, continuously pressing the core from 5.5cm to 4.5 cm. And fifthly, opening the rubber band, taking out the electrode fittings, and taking out the pressing plate. The electrodes will be placed in the core at the established locations and depths.
Example 1:
three-layer heterogeneous flat plate electrode cores of 508 × 538 × 30mm were prepared in this example.
(1) A pressing plate is designed by using solidworks software, 40 groups of electrodes are designed on the pressing plate, the 40 groups of electrodes are distributed at equal intervals, 6 electrodes in each group are uniformly distributed on a circle with the diameter of 6mm in a circumferential mode, 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 the figure 1 and the figure 2.
(2) Selecting a proper aluminum block, and processing the aluminum block into an aluminum alloy flat plate with the thickness of 508 × 538 × 30 mm; according to the design of the press plate, squares 500 x 500mm in size were drawn on the aluminium plate 4mm, 4mm, 4mm, 34mm from the edges of the long and short sides of the aluminium alloy plate respectively, and the positions of the electrodes were drawn and drilled.
(3) Electrodes with three lengths of 10cm, 8.5cm and 7cm are manufactured, and the length of 1.5cm is taken from the lower end of the electrode to remove the paint coat.
(4) An electrode fitting with the diameter of 6mm and the height of 10mm is manufactured, six uniformly distributed grooves are processed on the circumferential surface, and the diameter of the semi-cylindrical groove is 1.5mm, as shown in figure 3.
(5) Preparing three-layer heterogeneous flat electrode cores, placing a mold, mixing quartz sand and glue with different meshes according to a proportion to obtain three mixtures, adding the three mixtures into the mold in layers, and covering a pressing plate to press the mixture to 5.5 cm.
(6) The electrode was placed in the groove of the electrode fitting and the electrode was secured with a rubber band as shown in fig. 4. The electrode was continued to be inserted into the core, which was pressed from 5.5cm to 4.5cm as shown in fig. 5. And finally, opening the rubber band, taking out the electrode fittings, and taking out the pressing plate.
The invention is to make three-layer heterogeneous flat electrode core, design electrode hole on the pressing plate, arrange the electrode inside the core at the same time in the course of pressing the core, the electrode is arranged the position accurately on the level and longitudinally, adopt the form of the electrode group that three pairs of electrodes monitor the same point on the level at the same time, help to save the electrode and arrange the space. Therefore, the method for manufacturing the three-layer heterogeneous layer flat plate electrode core has important significance for petroleum artificial core displacement experiments and perfecting the artificial core preparation process.
Claims (5)
1. A three-layer heterogeneous flat plate electrode core manufacturing method is characterized by comprising the following steps:
designing a three-layer heterogeneous flat pressing plate, wherein the thickness of the three-layer heterogeneous flat pressing plate is 30mm, the length and width of the three-layer heterogeneous flat pressing plate are determined according to a core manufacturing mold, the number of groups of electrode holes is designed according to experimental needs, three pairs of electrode holes are uniformly distributed on the same circumference, and each pair of two electrode holes are positioned on the same diameter;
step (2), manufacturing a three-layer heterogeneous flat plate pressing plate, selecting an aluminum alloy plate, and drilling by using a numerical control machine according to the design;
step (3), manufacturing two electrodes with three lengths of 10cm, 8.5cm and 7cm, wherein the diameter of each electrode is 1-1.5mm, and the lower end of each electrode is 1.5cm long to strip off the paint coat;
step (4), manufacturing an electrode accessory, wherein the electrode accessory is a thick-wall cylinder with an axial center hole, six grooves are uniformly distributed on the outer circumferential surface of the thick-wall cylinder, the grooves are semi-cylindrical grooves, the lengths of the six grooves are equal to the height of the thick-wall cylinder, the grooves are used for placing electrodes, the upper ends of the electrodes manufactured in the step (3) are respectively placed into the grooves, the top ends of the electrodes are enabled to be flush with the top of the electrode accessory, then the electrodes are bound on the electrode accessory through rubber bands and are fixed, two electrodes with the length of 7cm are located on the same diameter, two electrodes with the length of 8.5cm are located on the same diameter, and two electrodes with the length of 10cm are located on the same diameter;
step (5), manufacturing three-layer heterogeneous flat electrode cores, wherein in the first step, a mold is placed, quartz sand and epoxy resin glue with different meshes are mixed according to a certain proportion and are rubbed uniformly to obtain three core mixtures, the three core mixtures are placed in the mold in three layers, and the three heterogeneous layers are respectively the lowest layer, the middle layer and the uppermost layer; covering three layers of heterogeneous flat pressing plates, and pressing down to press the core to 5.5 cm; thirdly, inserting an electrode into the rock core through electrode holes of three layers of heterogeneous flat plates by using an electrode accessory; fourthly, continuously pressing the rock core from 5.5cm to 4.5cm, and inserting six electrodes with different lengths of 10cm, 8.5cm and 7cm into respective appointed depths; and fifthly, opening the rubber band, taking out the electrode fittings, taking out the pressing plate, arranging the electrodes in the rock core according to the set positions and depths, wherein a 10 cm-long electrode pair is inserted into the lowest layer, the lowest layer is tested, an 8.5 cm-long electrode pair is inserted into the middle layer, the middle layer is tested, a 7 cm-long electrode pair is inserted into the uppermost layer, the uppermost layer is tested, and three non-homogeneous layers at the same point on the plane are monitored in an electrode group mode.
2. The method for manufacturing the three-layer heterogeneous flat plate electrode core according to claim 1, wherein the method comprises the following steps: the clamp plate designs 41 groups of electrodes in total, each group of 6 electrodes is uniformly distributed in a circle with the diameter of 6mm, the diameter of each electrode hole is 2mm, three pairs of electrodes monitor three non-homogeneous layers at the same point on a plane, the arrangement space of the electrodes on the plane is saved, and the comparison of data in the longitudinal direction is facilitated.
3. The method for manufacturing the three-layer heterogeneous flat plate electrode core according to claim 2, wherein the method comprises the following steps: in the step (2), the three-layer heterogeneous flat plate pressing plate is 538 mm long and 508 mm wide, a square is drawn on the three-layer heterogeneous flat plate pressing plate, the side length of the square is 500mm, the distance between the edge of the square and the edge of the long side and the edge of the short side of the aluminum alloy plate are respectively 4mm, 4mm, 4mm and 34mm, electrode groups are distributed at the position 22.5mm away from the periphery of the square, and the electrode groups are uniformly distributed in seven rows and seven columns at equal intervals.
4. The method for manufacturing the three-layer heterogeneous flat plate electrode core according to claim 3, wherein the method comprises the following steps: in the step (3), the electrode material is enameled wire, and electrodes with the lengths of 10cm, 8.5cm and 7cm are in different colors.
5. The method for manufacturing the three-layer heterogeneous flat plate electrode core according to claim 4, wherein the method comprises the following steps: in the step (4), the diameter of the electrode accessory is 6mm, the height of the electrode accessory is 10mm, the diameter of the groove is 1.5mm, the electrode is inserted into the rock core through the electrode hole, the electrode is straight, and the space coordinate of the electrode is accurate.
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