mining technology
Well logging engineering applies geophysical methods in the wellbore, and transmits the information on the original conditions and changes in the drilled rock formations and oil and gas reservoirs, especially the information on the distribution and changes of oil, gas, and water in the reservoir, through the cable It is transmitted to the ground, based on comprehensive judgment, to determine the technical measures to be taken (see engineering logging, production logging, saturation logging).
Drilling engineering plays a very important role in the development of oil and gas fields. In the construction of an oil and gas field, drilling engineering often accounts for more than 50% of the total investment. The development of an oil and gas field often requires drilling hundreds or even thousands or more wells. There are different technical requirements for wells used for different purposes such as production, observation and control (such as production wells, injection wells, observation wells, and inspection wells designed to check the effect of water washing oil, etc.). It should be ensured that the drilled well has the least pollution to the oil and gas layers, the cementing quality is high, and it can withstand the influence of various downhole operations in the exploitation for decades. Improving drilling technology and management, increasing drilling speed is the key to reducing drilling cost (see drilling method, drilling process, well completion).
Oil production engineering is the process of lifting oil and gas from the bottom of the well to the head of the well. The rise of oil and gas can rely on the self-injection of the energy of the formation, or it can rely on artificially supplemented energy such as oil well pumps and gas lift. Various effective workover measures can eliminate the failures of wax deposition, water production and sand production that often occur in oil wells, and ensure the normal production of oil wells. Stimulation measures such as hydraulic fracturing or acidification can increase the production capacity that is reduced due to low permeability of oil layers, or pollution and damage of oil and gas layers due to improper drilling technology measures. For injection wells, it is to improve the injection capacity (see oil production method, gas production process, layered production technology, oil and gas well stimulation process).
Oil and gas gathering and transportation project is to build a complete process technology of oil and gas collection, separation, treatment, metering, storage and transportation on the oil field. The oil, gas, water and other mixed fluids produced in the well are separated and preliminarily treated in the mine to obtain as much oil and gas products as possible. Water can be re-injected or used to prevent environmental pollution. Reduce ineffective loss (see oil field oil and gas gathering and transportation).

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