The height of the formation needs to be equal to the height of the core elevation.

Stratigraphic texture is the overlapping and accumulation pattern of rock layers within the stratigraphic sequence. Commonly referred to as cyclicity, rhythm, aggradation type, retrogradation type, progradation type sedimentation, etc., all belong to the conceptual category of stratigraphic structure.

Core filling height: refers to the distance from the drilling platform to the ground, which is called core filling. This height is the core filling height. From the perspective of well logging, the core-filling altitude means that the drill pipe starts to be lowered from the drilling platform, and the well logging test starts from the ground as the datum plane. There will be a difference in the height of the drilling platform itself, which is because Mend your heart.

Core filling altitude = ground altitude + drilling rig core filling height

Drilling rig core filling height is the vertical distance between the drilling rig foundation surface and the drilling rig turntable surface. Production well logging can be divided into open hole logging and cased hole logging. Open hole means that the drill floor is still there and the casing has not been lowered or part of the casing has been lowered (external casing). The object of logging is that the casing has not been lowered. Cased wellbore generally measures 9 conventional curves (resistivity, etc.). At this time, the depth of the well log is calculated from the drill floor. To calculate the altitude at a certain depth, the core altitude needs to be added.