地层方位各向异性

• 作 者: Bert Chenin 牛宝荣
• 机 构: 吐哈研究院,
• 出 处: 国外油气勘探
• 发表日期: 1999年06期
• 关键词: 横波分裂 电缆测井 交叉偶极 裂缝渗透率 井眼稳定 局部应力 子波 测井仪 反演技术 各向同性介质

你对钻井过程中的井眼稳定性存在疑问吗? 产层具有裂缝渗透率吗? 裂缝方向是怎样的? 局部应力状态是怎样影响增产计划的? 所有这些问题都有一个共同点。要回答这些问题,就需要测量地层的方位各向异性。自1927年在法国首次采用电缆测井以来,井眼中记录的大多数信息都表明地层特性是随井中的深度或井旁的深度而变化的。这个数据是一维的,因为只有深度是可变的。当今复杂

Do you have doubts about wellbore stability during drilling? Are there any fracture permeability in the pay zone? What is the direction of the fracture? How does the local stress state affect the stimulation plan? All of these problems have one thing in common. To answer these questions, we need to measure the azimuthal anisotropy of the formation. Most of the information recorded in the wellbore since the first cable logging in France in 1927 shows that the formation properties vary with the depth in the well or the depth of the well. This data is one-dimensional, because only the depth is variable. Today’s complex