CN206124047U - A casting die utensil for square rock core epoxy - Google Patents

Abstract

The utility model discloses a casting die utensil for square rock core epoxy, but form by bottom plate, curb plate, end plate indentation hob, water conservancy diversion lid, pressure tap device, curb plate and end plate with the bottom plate gomphosis, are equipped with the bottom plate fixed station by the screw connection again on the bottom plate, realize fixed connection through the tight bottom plate fixed station of clamping -force clamp of curb plate and end plate, the rock core fixed slot is installed at the bottom plate middle part, put rock -entering heart fixed slot centre with the rock core, water conservancy diversion lid is put in the face of full crying with the rock core front and back end, and water conservancy diversion lid middle part is equipped with the screw, also is equipped with the screw on the end plate, but the indentation hob passes end plate screw and the water conservancy diversion lid rock core that makes up and screw, lays the pressure tap device at the rock core upper surface. The utility model discloses having improved laboratory experiment casting rock core mould commonly used, having made it can possess better water conservancy diversion passageway, the rampart stability of casting simultaneously is strong, and the installation is dismantled conveniently, easy demoulding.

Description

A casting mold for square core epoxy resin

technical field

The utility model relates to an epoxy resin casting core mold for square cores commonly used in indoor experiments, which belongs to the technical field of casting molds.

Background technique

In the process of oilfield production and development, adopting a reasonable development plan and production system is the basis for maintaining efficient production and development. The overall development plan is mainly analyzed through numerical simulation, and the basic experimental parameters of laboratory experiments are the basis of numerical simulation. Therefore, objectively speaking, the accuracy of laboratory experimental data and the regularity of research affect the production and development simulation of the entire reservoir.

Regarding the core model, there are currently two main types, core holder and epoxy resin casting. At present, the vast majority of domestic research institutions use iron core holders with complex structures to clamp and seal the core. With the diversified development of core experiment displacement, 45×45×300mm has become the mainstream model for one-dimensional research. This type of model is operated by a holder, and there are the following problems: ①The volume is large, heavy, and inconvenient Handling and loading and unloading; ②Rely on pressurized (outer circle and inner square) rubber sleeve seal, which is easy to damage the rubber sleeve, and problems in the experiment process will easily lead to experiment failure; Non-core liquid displacement data will be produced in the process of water flooding and other research processes, which will affect the experimental results; ④ When measuring the core pore volume, the weighing method cannot be used because the mold is too large, and the measurement error of the emptying method is relatively large.

For these reasons, artificial cores are gradually being developed in epoxy resin casting. For the cast core, the design of the casting mold has a very close influence on the casting degree of the core. For the casting mold, the following aspects need to be done: ①The wall surface of the core casting must be uniform and stable, so that it can withstand the experimental pressure; ②The mold must be detachable and easy to demould; The opening of the flow channel to ensure that the diversion channel is not blocked; ④ Some core experiments require the measurement of intermediate pressure, how to install and fix the pressure measuring point. And present rock core casting mold does not fully meet these needs.

Utility model content

In response to the above problems, the utility model provides a core casting mold for square cores (45×45×300mm) commonly used in indoor experiments, which can improve the quality of casting cores in indoor experiments, improve the readiness of experimental data, and provide a basis for numerical simulation. , Lay a good foundation for reservoir production and development.

The technical scheme of the utility model is as follows.

A casting mold for square core epoxy resin is composed of a bottom plate, a side plate, an end plate, a retractable screw rod, a diversion cover, and a pressure measuring point device; the side plate and the end plate are connected by screws, and then Embedded with the bottom plate, the bottom plate is provided with a bottom plate fixing platform, and the bottom plate fixing platform is clamped by the clamping force of the side plate and the end plate to realize the fixed connection; the core fixing groove is installed in the middle of the bottom plate; the core is placed in the center of the core fixing groove , the diversion cover is placed in alignment with the front and rear end faces of the rock core, a screw hole is provided in the middle of the diversion cover, and a screw hole is also provided on the end plate, and the retractable screw rod passes through the screw hole of the end plate to combine with the diversion cover and tighten A rock core, a pressure measuring point device is placed on the upper surface of the rock core.

Further, positioning blocks are installed on the left and right sides of the core fixing platform, and a protrusion is provided in the middle of the positioning block; a gap is provided at the lower end of the side plate, and the positioning block is fitted with the notch of the side plate, and the structure of the bottom plate is a boss type Flat plate structure; the core fixing groove fits with the notch at the lower end of the side plate for easy disassembly.

Further, the shape of the retractable screw rod is a stepped cylinder, and the middle part of the retractable screw rod is a hollow pipe. After screwing into the core, the hollow pipe forms a flow channel.

Further, the material of the pressure measuring point device is aluminum material, and there are pressure measuring holes in the device, which fit well with the size of the rock core, that is, the fit of the pressure measuring material and the rock core can be stabilized by applying pressure with a certain gravity.

Further, one side of the diversion cover is provided with grooves.

Further, the retractable screw rod can be flexibly retracted according to the length of the core to clamp the core.

A casting mold for square core epoxy resin, the installation steps are as follows:

a. Unloading and cleaning, cleaning the inner wall of the mold;

b. Mold closing and oiling: Fit the side plates, end plates, and bottom plates, install retractable screw rods at both ends of the mold, and evenly coat the inside of the mold with silicone oil;

c. Put on the diversion cover and clamp the core, combine the diversion cover on the retractable screw rod, place the core to be clamped stably with the core fixing groove, make the core hang in the middle of the mold, and cut in the core at a suitable position Pressure measuring point module device;

d. According to the size of the mold, calculate the internal space volume, and accurately calculate the total amount of materials used;

e. Weigh the ingredients, heat and melt, solidify and exhaust, let stand to cool, solidify and release the mold.

The beneficial effects of the utility model are:

The utility model improves the casting core mold commonly used in indoor experiments, so that it can have a better diversion channel, and at the same time, the casting ring wall has strong stability, convenient installation and disassembly, and easy demoulding.

Description of drawings

Fig. 1 is a schematic diagram of dismantling structure of the utility model;

Figure 2 Schematic diagram of the bottom plate structure;

Figure 3 Schematic diagram of the structure of the diversion cover;

Fig. 4 is a schematic diagram of the assembled structure of the utility model.

As shown in the figure: 1, side plate; 11, gap; 2, end plate; 3, telescopic screw rod; 4, bottom plate; 41, rock core fixing platform; Flow cover; 6. Rock core; 7. Bolt.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figures 1 to 4, a casting mold for square core epoxy resin consists of a bottom plate 4, a side plate 1, an end plate 2, an indentable screw rod 3, a diversion cover 5, and a pressure measuring point device (not shown in the figure) composition; the left and right sides of the core fixing table 41 are equipped with a positioning block 42, the lower end of the side plate 1 is provided with a gap 11, and the protrusion of the positioning block 43 is fitted with the side plate gap 11, and the The middle part of the base plate 4 is provided with a core fixing table; the core fixing groove and the lower end gap of the side plate are fitted together for easy disassembly; The holding force realizes the fixed connection; the core fixing groove 41 is installed in the middle of the base plate 4; Screw holes, the end plate 2 is also provided with screw holes, the core 6 fixed by the core fixing groove 43 is combined with the screw hole of the end plate 2 with the retractable screw rod 3 and the diversion cover 5 is tightened and clamped , the middle part of the retractable screw rod 3 is a hollow pipe, and after being screwed into the core 6, air holes are formed to maintain the diversion channel, and the retractable screw rod 3 passes through the screw hole of the end plate 2 and is combined with the diversion cover 5 and screwed in The core 6 realizes the clamping effect in this way, and the retractable screw rod 3 can be flexibly retracted according to the length of the core to clamp the core 6; the material of the pressure measuring point device is aluminum material, and there are pressure measuring channels in the device. It fits well with the size of the core 6, that is, the fitting of the pressure measurement material and the rock core can be stabilized by applying a certain gravity pressure.

Concrete implementation steps of the present utility model are as follows:

(1) The mold is unloaded and cleaned, and the inner wall of the mold is cleaned;

(2) The inner sides of the two side plates 1 of the mold, the inner sides of the two end plates 2, the surfaces of the two indentable screw rods 3, and the upper surface of a bottom plate 4 are evenly coated with silicone oil. After the end plate 2 and the side plate 1 are connected by bolts 7, they are fitted on the bottom plate 4, and the gap 11 of the side plate 1 is fitted with the positioning block 43 of the bottom plate 4, and the front and rear cushion blocks 42 of the end plate 2 and the bottom plate 4 are fitted. The installation is complete. Install the retractable screw rod 3 on the end plate 2 and tighten it inwardly. Then the diversion cover in FIG. 3 is placed on the front end of the retractable screw rod 3 .

(3) Use the rock core 6 fixing groove in Fig. 2, lay the rock core 6, and the positioning block 42 on the fixing groove is fitted with the side plate. Then the two ends of the mold are screwed inwardly to retract the screw rod 3 at the same time, and the rock core 6 is clamped so that the end face of the rock core 6 coincides with the end face of the diversion cover 5 in Fig. 3 .

(4) The complete model after assembly is shown in FIG. 4 , and then a pressure measuring point device is placed at a suitable position on the upper surface of the core 6 . Then calculate the internal space volume according to the size of the mold, and estimate the total amount of materials used.

(5) Filler curing mold: weigh the materials according to the set ratio of epoxy resin, curing agent and toughening agent. First heat and melt the weighed epoxy resin, and then add toughening agent to the epoxy resin. Heat the curing agent separately until it is completely melted, then pour the curing agent into the mixture of epoxy resin and toughening agent, pour the mixed ingredients into the mold evenly and slowly, fill it up, let it cool and solidify Sample demoulding.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (4)

1. a kind of casting die for square rock core epoxy resin, it is characterised in that by base plate, side plate, end plate, can indentation spiral Bar, fairing cap, pressure tap device composition；The side plate is by mode connects for screw then chimeric with base plate with end plate, and base plate is provided with base plate Fixed station, clamps base plate fixed station and achieves a fixed connection by the chucking power of side plate and end plate；The rock core fixing groove is arranged on Base plate middle part；Rock core is put into into rock core fixing groove center, the fairing cap aligns placement with rock core front/rear end, in the middle part of fairing cap Be provided with screw, screw also be provided with end plate, can indentation screw rod rock core is combined and screws with fairing cap through end plates screw hole, in rock Surface mount pressure tap device in the heart.

2. a kind of casting die for square rock core epoxy resin according to claim 1, it is characterised in that the rock core Fixed station left and right sides is provided with locating piece, and the locating piece middle part is provided with projection；The side plate lower end is provided with breach, locating piece with Side plate breach is fitted together to, and the base arrangement is projective table type slab construction；Rock core fixing groove is mutually chimeric with side plate lower end breach.

3. a kind of casting die for square rock core epoxy resin according to claim 1, it is characterised in that described to contract It is stairstepping cylinder to enter screw rod profile, can be hollow pipeline in the middle part of indentation screw rod, and after precession rock core, hollow pipeline forms stream Road.

4. a kind of casting die for square rock core epoxy resin according to claim 1, it is characterised in that the water conservancy diversion The one side of lid is provided with recessed canal.