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通过岩心、测井曲线研究,在濮城油田沙三中6～10识别出超短期、短期、中期、长期4级基准面旋回,建立了储层格架,以短期旋回为单位讨论了层序格架内油气分布和砂体开发响应,基准面旋回格架对油气的分布、砂体的开发响应和剩余油分布有明显的控制作用。油气富集部位与基准面位置相关,基准面低位处的砂体油气储量和储量丰度均较高,而基准面高位处砂体油气储量和丰度较低。基准面低位处砂体物性较好,较易动用,采出油气数量和采出程度较高,但由于其本身的储量较大,剩余油仍占据着主要的地位。基准面高位处砂体物性较差,储量较难动用,采出油量和采出程度均较小,但受其本身储量的限制,其剩余油量在剩余可采储量中的比例较小。
Based on the study of cores and well logging curves, ultra-short, short, mid-term and long-term 4-level cycles are identified 6 ~ 10 in Sha 3 of Pucheng Oilfield, and the reservoir framework is established. The sequence of the sequences is discussed in terms of short-term cycles The distribution of oil and gas in the grid and the development of the sand body respond to it. The reference plane grid plays a significant role in controlling the distribution of oil and gas, the development response of sand body and the remaining oil distribution. The oil and gas enrichment site is related to the location of the datum surface. Both the oil and gas reserves and abundance of the sandstone at the low datum are high, while the reserves and abundance of the sandstone are low at the high datum. The low sandstone in the datum plane has better physical properties and is easier to be used. The amount of oil and gas produced and the degree of recovery are higher. However, due to its large reserves, the remaining oil still occupies a major position. The sand body at the top of the datum surface has poor physical properties, difficult to use reserves, less oil recovery and recovery. However, due to its own reserves, the remaining oil content is less than the remaining recoverable reserves.