1. Overview
Rock casting technology has a history of nearly 50 years from its proposal to its development. Domestic geological departments and petroleum departments mainly use rock casts and cast pieces to study the content, type and distribution of reservoir rock pores.
The working principle is: the liquid leaching agent is injected into the rock pore throat under vacuum and pressurized conditions and heated to solidify it. In the consolidated rock, the space occupied by the dip agent is the pore throat space connected with the rock. The infused rock is further processed into rock flakes, I .e. cast flakes. Then the two-dimensional spatial structure of pores, throats and their mutual and connected coordination was observed under a polarizing microscope. Such as acid treatment of rock infused with the infused dye. Dissolution of the clastic minerals, rock blocks and cements that make up the rock becomes the spatial structure of the rock pores.
The instrument is mainly composed of vacuum infusion system, high pressure infusion and heating and curing system.
Main technical parameters of 2.
1. Working pressure: ≤ 50MPa;
2. Working temperature: ≤ 180 ℃;
3. Vacuum degree: 6 × 10-6Pa (optional vacuum unit to improve vacuum degree);
4. Heating power: 1KW;
5. Power supply: 220V/50Hz
6. Effective volume of casting cylinder: φ40 × 260, φ27 × 260 (glass tube size);
7. The minimum effective pore throat radius of casting medium injection is 0.2 m.