| At the present, the water locking damage because of the water intrusion during the drilling, well completing and the oil production or the water agglomeration in the rock porous has been the most important restraining factors of economic exploitation for the gas reservoir especially for the low permeate sandstone gas reservoir. To terminate the water locking is of important value for the exploitation of oil and gas, but the present terminate water locking technique is not obvious. So in the paper we come up with a quickly method of terminating the water locking damage--- microwave heating.According to the lab result and the theory, we can see the microwave heating for terminating water locking is a prospect technique. The ground heat process provides the basic way of terminating the water locking, so the microwave heating is based this theory, which is different from the regular heating method characterizing for its heating principle and the influence for the ground.In the paper, a series of research is going on, and comes up with many plans and solution method for the microwave heater. (1) There are three ways for the microwave heating, first, wave-guide transmission; second, doesn't need wave-guide transmission; third, the heater is located the upper of the well and the heater is located the underground of the well. From the first and second method analysis: although the second method can achieve the large area and all-round heating, the practice has proved that the first method is better than the second way. The third way has proved that the microwave heater located the upper well is a common used way, especially for the viscous oil degradation. (2) There are three ways of lower well microwave heater; first, a single microwave-tube high-power transformer located the upper well; a single microwave-tube high-power transformer located the lower well and many microwaye-tubes heater, and the paper is going on the analysis and the design. |
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