長春嶺地區(qū)扶余油層儲層預(yù)測及含油氣性評價
[Abstract]:Changchun Ling structure is an oil and gas bearing structure discovered in the early stage of Jilin Oilfield. The structural form is a long axis anticlinal complicated by fault cutting, the maximum trap line is-200m, the closing height is 160m, and the closed area is about 139.0km2. The exploration began in the early 1970s, and a number of oil and gas display wells were found. Due to the low production rate and poor production effect, no great breakthrough has been made. At that time, it was considered that Changchun Ridge structure was formed at the end of Mingshui formation deposition, later than the main period of oil and gas migration, and would not form a large oil and gas scale. In the early 21st century, in order to further evaluate the geology and oil and gas bearing conditions in this area, it is considered that Changchun Ridge structure will not form a large oil and gas scale later than the main period of oil and gas migration. According to different blocks, several evaluation wells have been deployed one after another, which has broken through the view of industrial oil flow in this area, and some practical problems have been found, such as: different reservoir characteristics and different oil and gas bearing conditions in the same structural unit; The reservoir sand bodies are banded on the plane, the longitudinal sand bodies are superimposed and connected, and the sandstone stability is poor. By using the post-stack information, the prediction results are very different, and the sand body prediction results are in poor agreement with drilling. The velocity difference of sand mudstone in Changchun Mountains area is small, and the acoustic curve can not reflect the underground lithology characteristics. In view of the above problems existing in the overall development of the reservoir in this area, this paper uses three-dimensional seismic data to interpret the fine top surface structure of the regional reservoir and re-identify the micro-fault, uses the advanced drawing software to describe the reservoir scientifically and reasonably, and further understands the reservoir type and the distribution law of oil, gas and water. At the same time, it is of great guiding significance to carry out the oil and gas prediction of the corresponding key reservoirs in order to further improve the evaluation effect of the developed area blocks and further deploy the new wells, and to realize the overall utilization of the reservoirs.
【學(xué)位授予單位】:東北石油大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:P618.13
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