钻井实用技术必备
旋转制导系统（RSS）
旋转引导工具沿着期望的轨迹直接引导钻头，从而防止钻柱在井壁上滑动，允许井眼被很好地清洁，同时允许根据地层选择合适的钻头。这可以显着减少或消除滑动导向工具的缺陷。
目前，旋转式转向工具主要包括：VDS自动垂直直井钻井系统，SDD自动垂直钻井系统，ADD自动定向钻井系统，RSD旋转导向钻井系统，RCLS旋转闭环钻井系统等。
井斜的原因
地质因素
地层可钻性的纵向变化
地层倾斜，软硬，并且钻头偏向垂直地层。
地层可钻性的横向变化
垂直于钻头轴线的可钻性变化。
例如，在钻头的一侧钻一个孔或一个松散的地层，而在另一侧钻一个较密的地层。
钻孔系数
主要因素是钻头的倾斜度和弯曲度。
使钻头倾斜并在井底形成不对称的切口。
钻头受到侧向力以产生侧向切割。
使钻头倾斜和弯曲：
钻头和井眼之间有一定的间隙。
在钻压作用下，钻柱被压紧在井壁附近或弯曲。
钻头本身弯曲。转盘安装不正确，井架安装不正确。
打井施工工艺及注意要点
Well drilling c***truction technology and attention points
1. According to the requirements of the water output of the well, the wellbore structure is designed with the well depth and the caliper, and the drilling machine type and the corresponding auxiliary equipment are selected in combination with the stratum.
2. Before drilling, the machine should be leveled, the equipment should be arranged, the equipment should be stored, the tower should be erected, and the rig should be placed.
3. Drilling holes in the bedrock aquifer, *** is better to use rotary core drilling. During the drilling process, hydrogeological observati*** such as groundwater level and the disappearance of circulating liquid holes should be carried out.
4. During the process of drilling into holes, it should be described according to technical requirements, layered soil samples, water samples, temperature measurement, etc. Also ensure the quality and quantity of the sample.