油气储层有限变形转动场及其裂缝发育区预测——以塔里木盆地大庆区块下古生界碳酸盐岩为例

基金项目:

国家杰出青年基金项目(编号50025413)

国家自然科学基金资助项目(编号59774003和49872053)

详细信息

Finite deformation rotation of oil and gas reservoir and its fracture prediction -A case:Lower Paleozoic carbonate reservoir in Daqing Tract of Talimu Basin

摘要: 应用有限变形力学理论,建立了油气储层变形位移函数,给出了一种新的恢复储层变形初始位形的方法,实现了储层构造变形应变-转动分离,并以平均整旋角(θ)的梯度作为基本特征量,研究了塔里木盆地大庆区块碳酸盐岩储层有限变形转动场分布;依据局部转动和介质非协调转动产生断裂的思想,对碳酸盐岩储层裂缝发育区进行预测,取得了令人满意的结果。
- 油气储层 /
- 有限变形 /
- 转动场 /
- 裂缝预测
Abstract: Using the theory of finite deformation mechanics,a displacement function of the gas and oil reservoir deformation is established,and a new method recovering the confiquration before deformation of reservoir is proposed.Strain-Rotation decomposition has been made in the geological structural deformation.Adopting the gradient of mean rotation angle(θ) as the basic characteristic quantity,finite deformation rotation fields in Daqing tract of Talimu basin are studied.By the thinking that the local rotation or the discord rotation of the media will induce fractures,we forecast the fracture favorable regions of the Carbonate rock reservoir and satisfied results are gained.
- Oil and gas reservoir /
- finite deformation /
- rotation field /
- fracture prediction