Exhibition lobby

Most of the countries we import oil from are located in the Middle East. The distance between Japan and those countries is about 12,000 km and it takes about 20 days. You can see inside the tanker by turning on the power switch. It has a double hull structure and the inside has many partitions. It is well-designed to maintain the balance of the tanker and minimize the loss of crude oil in the case an unexpected accident happens.

This large bit is used on soft ground near the surface of the earth, and when it comes across ground that is firm and stable, the casing pipe is replaced along with a bit with a smaller diameter. The reason why there are three holes at the tip of the bit is for muddy water to be pumped into the pipe with high pressure and injected from the tip to rotate the bit and excavate, and at the same time the excavated earth and sand flows back through the casing pipe and up and out of the well.

If you look closely, you can see fine parallel stripes and diagonal stripes in the sandstone layer as well as how the structure of the sand becomes finer towards the top. The sandstone layer is darkened due to the oil it has absorbed. Among the mudstone, some contain fossils of a sponge called Makiyama Chitanii that lived in the deep sea. The Kanazu Formation formed about 5 million years ago by alternating layers of sand and mud piled up on the deep-sea floor due to turbulent mud flow caused by submarine landslides. The oil produced in the Teradomari Formation below the Kanazu Formation moved upward, and oil and natural gas accumulated between the sand grains of the Kanazu Formation.

Due to its simple and inexpensive nature, even Nakano Kanichi used it at the Kanazu mine and thus kazusabori digging spread throughout the Niitsu oil field. At that time, wires did not exist, so people turned moso bamboo into a substitute for rope, and attached an iron pipe onto the end. Four to six workers rode behind the scaffolding on the turret, step on the central beam with their feet, lift the tip and release it. At the same time, two people facing the front step on and accelerate the machine to hold the steel pipe strongly towards to the bottom of the mine. It is a construction method in which the person in charge digs while operating the well core, and it was possible to dig over 200 meters.