塔里木盆地沉积剥蚀过程与油气关系

Relationship between the Oil-Gas and Process of Depositon-Erosion in Tarim Basin

塔里木盆地典型井的周期分析表明，塔里木盆地在其地质历史时期100Ma左右的周期是很明显的，自寒武纪以来共经历了4个完整的周期，每一完整周期都由正相位和负相位两个半周期所组成。而第三纪为第5个周期的正相位阶段。该周期控制了盆地内的沉积与剥蚀的过程及成藏旋回。对沉积与剥蚀过程的控制作用表现在周期波正相位和负相位分别对应于沉积期和剥蚀期，这在地质年代序列中表现为沉积与间断的互为消长的演化进程。对食油气系统的控制作用表现在：第1个周期波构成以早古生代地层为主体的含油气系统，第2个周期波至第4个周期波构成以晚古生代至中生代地层为主体的含油气系统，第5个周期的正相位阶段构成以第三纪地层为主体的含油气系统。

Based on the periodic analysis for the typical wells of Tarim Basin with the method of wave analysis, the period of 100 Ma was obviously seen. Since Cambrian, there are four complete periods and each of them is composed of two half-periods of positive phase and negative phase. Tertiary is the positive phase of the fifth period. All of the processes of deposition and erosion, and entrapment cycles are controlled by the 100 Ma period. The controlling effects of the period for the process of deposition and erosion are confirmed by that the positive and negative phases are corresponding to the depositional and erosional ages, respectively. The controlling effects of the period for petroleum system are known by that the petroleum system of the Early Paleozoic is made up of the first periodic wave, the petroleum systems from the Late Paleozoic to the Mesozoic consisted of the second to fourth periodic waves, and the petroleum system of Cenozoic is made up of the positive phase of the fifth period.