Can things go wrong and access to the oil be lost?
No. This is impossible as the emulsion is the only blocking agent and that is only temporary. The microbe cannot act as a block because after the Titan nutrient is cut off, food deprivation occurs and the microbes become so small that they can not block anything. After the process has cycled through its phenomenon, the reservoir returns to its original condition. The Titan nutrient can be designed to cause the Titan effect to be sustained for many years or only several months.