Evaluation of the Oil Gas Prosperity and Geochemical Exploration in the known region

A hydrocarbon anomaly is generally defined as the change in value of one or more hydrocarbons in the field compared with background level of hydrocarbons and a background study is a thorough understanding of the vertical migration of the hydrocarbons in the area. Vertical migration is the mechanism that is used to explain hydrocarbon seepage to the surface. The mechanism for vertical migration is still subject to debate and, at present, no solution is in sight (Steven A. Tedesco). However, the end result has made the acceptance of surface geochemistry a moot point and no longer a stumbling block to its use . It is the process that causes the surface geochemical manifestation by which we can detect petroleum accumulation using various shallow methods. In the other hand Yakla is the known typical oil gas field for making the structure analysis of the geochemical field, to verify and correct our proposed analysis theory and method of geochemical field. In fact, many methods and calculating processes have been gradually improved and perfected in this known area during the study. This area is a very important and typical region in north Tarim, because it is the region that leads to a breakthrough in North Tarim oil gas exploring. Therefore, a lot of exploration work has been already carried out aiming at assessing the hydrocarbon anomaly in the area and some techniques for anomaly delineating are being suggested. These studies show that it is proper to choose this region as a typical known oil gas field in north Tarim and use .geochemical exploration methods to delineate Six oil/gas anomalies