From the search for oil to the use of oil, there are four main links, namely, search, mining, transportation and processing. These four links are generally referred to as “oil explorationâ€, “oil field developmentâ€, “oil and gas gathering and transportation†and “ Petroleum refining." There are many ways to "oil exploration", but whether there is oil in the ground is ultimately confirmed by drilling. The progress of a country in drilling technology often reflects the development of the country's oil industry. Therefore, some countries are competing to announce that they have drilled the world's first oil well to show that they have taken the earliest development in the oil industry. One step. “Oilfield development†refers to the use of drilling methods to confirm the distribution of oil and gas, and oil wells can be put into production to form a certain scale of production. In this sense, the development of the Ziliujing gas field in Fushun County, Sichuan Province in 1821 was the earliest natural gas field in the world. The “oil and gas gathering and transportation†technology also came into being with the development of oil and gas. Around 1875, the Ziliujing gas field used the locally produced bamboo as raw material, and the knot was opened. The outer linen was wrapped with tung oil and connected to the “loss†we now call. The gas pipeline, with a total length of two or three hundred miles, in the artesian well area at that time, the intertwined pipelines climbed over the hills and passed through the gullies to form a gas transmission network, allowing the application of natural gas to extend from the vicinity of the well to the long-distance salt stove. The development of the gas field was promoted, and the natural gas at that time reached an annual output of more than 70 million cubic meters. The first level of oil extraction is the exploration of oil fields. Today's petroleum geologists use instruments such as gravimeters and magnetometers to find new oil reserves. Oil near the surface can be mined using open pit mining. However, today, except for a few very remote mineral deposits, such oil reserves are almost completely exhausted. Today there is such an open-pit oil mine in the Athabasca oil sands in Alberta, Canada. In the early days of oil exploration, there were also mines that used underground mines for underground mining. Deeply buried oil fields require drilling to extract. Oil mines under the sea need to be drilled and mined using oil platforms. In order to transport the debris drilled by the drill bit and the lubrication and coolant out of the borehole, the drill string and the drill bit are hollow. The drill string used in drilling is getting longer and longer, and the drill string can be connected together using a spiral. The end of the drill string is the drill bit. Most of the drill bits used today consist of three toothed drill discs that are at right angles to each other. In hard rock drill is the drill bit can also be equipped with a diamond. However, some drill bits have other shapes. Generally, the drill bit and the drill string are rotated by a drive mechanism on the ground. The diameter of the drill bit is larger than that of the drill string, so that a cavity is formed around the drill string, and a steel pipe is used behind the drill bit to prevent the wall of the drill hole from collapsing. The drilling fluid is sent to the drill bit by a high pressure drill string. The drilling mud is returned to the ground by this high pressure through the borehole. The drilling fluid must have high density and high viscosity. Some drill bits use drilling fluid to drive the drill bit. The advantage is that only oil The drill bit does not have to be rotated throughout the drill string. In order to operate a very long drill string, a drill rig is generally built above the borehole. Engineers can also use directional drilling techniques to drill around the hole if necessary. This allows an oil field to be mined from the side by bypassing the inhabited, geologically complex, protected or militaryly used ground. The oil in the depths of the earth's crust is crushed by the upper layer and possibly accompanying natural gas, which is lighter than the surrounding water and rock, so it tends to be squeezed out by pressure when the bit touches the oil layer. In order to prevent this jet, modern rigs have a special device at the upper end of the drill string to prevent the well. Generally speaking, the oil field of the newly mined oil field is high enough to be sprayed to the ground by itself. As the oil is mined, its oil pressure continues to decrease, and a pump that is driven from the ground through the drill string is then required to pump oil. The amount of oil that can be mined can be increased by pressing water or natural gas into the well. The permeability of the oil-bearing rock can be improved by injecting acid to dissolve part of the rock (such as carbonate). As the extraction time increases, the composition of the water in the liquid is getting larger and larger. Later, the composition of the water is greater than the composition of the oil. Today, some of the water components in the mine account for more than 90%. According to the local conditions, 20% to 50% of oil in an oil field can be mined today. The remaining oil cannot be broken down from oily rocks today. GANTRY STRAIGHTENING HYDRAULIC PRESS Frame Press Filter,Frame Press Machine,Frame Hydraulic Press,Gantry Straightening Hydraulic Press Chongqing Jiangdong Machinery Co., Ltd , https://www.cqjdpress.com