High temperature battery in the underground wireless equipment to explore APPLICATION
At present, Sham Tseng and high temperature wells of the percentage of oil and gas production, especially natural gas production to increase the percentage. Dexter Magnetic Technologies, according to the forecast, Sham Tseng and high temperature wells of gas production will be more than 150,000,000,000,000 ft3. To achieve a higher percentage of the 437 ~ 482oF temperature of the gas must be put into operation. Oil companies and drilling contractors think that in order to make these underground reservoir drilling and production preparation. To do a good job, such as LWD or MWD tools, such as sony pcga-bp2ny battery development, and these tools will be used for “smart” bottom hole assembly.
It is believed that the electronic underground in the area of the main constraints is the temperature. Most of the underground electronic components rated operating temperature of 300 ~ 345oF. To this end, the U.S. Department of Energy and oil industry joint venture to develop ibm fru 92p1139 battery to work with a high temperature of electronic components. At present, epitaxial silicon insulator components can withstand the high temperatures of 392oF. High temperature capacitor technology seems to have made much progress. The question now is how to obtain reliable and can be purchased in the market power of the underground mine for the next generation of electronic components to provide sources of power? Despite the most “fashionable” bottom hole assembly, if there is no sufficient and reliable power-driven, drilling contractors are also not helpful. Underground battery manufacturers are looking for high-temperature solution to the problem. Now the market toshiba pa3107u-1brs battery rated to reach operating temperature of 392oF, but they will be the lowest rated operating temperature limits, high-temperature lithium batteries may not be able to work at low temperatures. For example, the rated operating temperature of 392oF lithium batteries, when operating in 212oF temperatures, the hp f3172a battery capacity only when the temperature of 392oF half, life would be halved.
Frequently as a result of the replacement battery will remain sealed and can not be a problem, because the electronic tools in order to maintain the pressure seal is not always the demolition. As a result, the use of the same cell, when at room temperature by drilling in to 392oF or higher temperatures will be into a significant reduction in the efficiency and battery life, thus increasing the per ampere - the cost of an hour.
U.S. Department of Energy’s Sandia National Laboratory and the General Atomic Energy Research Institute, a research and development bear the high temperature battery. Jin has produced the most rated as high as 482oF temperature of the cell samples. In addition, the development of a limited load current under 77oF temperature in the work of the dell Latitude D800 battery, but the development costs, but also does not take into the market.
Mud motor-driven turbine generators is a kind of alternative power supply. Underground generators as the battery compaq BTP-63D1 is not as affected by temperature and a narrow window of power density and other conditions change. Recently, the U.S. Department of Energy National Energy Technology Laboratory under the auspices of, Dexter Magnegic Technologies developed in the temperature of 482oF under the operation of the underground turbine generators. Dexter Magnegic Technologies has been rated as the temperature of 300oF turbine generators into operation and will be named UnderCurrent. UnderCurrent for downhole tools to provide 3-phase AC and its rated operating temperature of 437oF, generators installed in the module 43/4in drill collar, in 437oF temperatures can power 200W. UnderCurrent driven by horsepower less than the total water consumption of water drilling horsepower of 5%, but the generators of higher manufacturing costs.