Composition of oil casing:
Oil casing pipe is mainly composed of casing body, casing sleeve and casing ring. The casing body is the main part of the oil casing. It is a hollow steel pipe in the oil well. It is used to withstand the wellbore pressure and support equipment such as casing and drill pipe; the casing sleeve is a piece of material covering the casing body. The bushing is mainly used to protect the casing body from being scratched and worn by the drill bit; the casing ring is a metal ring used to fix equipment such as casing and drill pipe to ensure work safety.
Usage of oil casing:
The casing is inserted into the wellbore and fixed with cement to prevent the wellbore from separating the rock formations and the wellbore from collapsing, and to ensure the circulation of drilling mud to facilitate drilling and mining. Casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion.
Each well uses several layers of casing based on different drilling depths and geological conditions. Cement must be used to cement the casing after it is lowered into the well. Unlike oil pipes and drill pipes, it cannot be reused and is a one-time consumable material.
According to the usage, casing can be divided into: conduit, surface casing, technical casing and oil layer casing.
The function of oil casing:
Oil casing is a piece of equipment used for oil extraction and has the following main functions:
1. Fix and protect equipment such as casing and drill pipe in oil wells.
Due to the depth and pressure of oil wells, equipment such as casings and drill pipes are easily affected by environmental pressure, resulting in unstable operation and even breakage. The emergence of oil casing can effectively fix and protect these equipment so that they can work stably in the oil well, thereby improving the efficiency of the entire oil production system.
2. Prevent oil well collapse.
Oil well collapse is a very common safety hazard. If an oil well collapses, it will cause the loss of inventory in the oil well, cause pollution to the environment, and even cause losses to workers. Oil casing can prevent oil well collapse and protect the safety and stability of oil wells.
3. Prevent pollution of the external environment.
Oil casing can effectively isolate the gap between the oil well pipe wall and the oil well wall to prevent adverse environmental conditions from contaminating and eroding the internal resources of the oil well, thereby protecting the quality and value of oil resources.
The importance of oil casing in oil exploration:
As a specialized piece of equipment, the role and value of oil casing in oil exploration cannot be ignored. It can effectively fix and protect equipment such as casings and drill pipes in oil wells, prevent oil well collapse and pollution of the external environment, thereby ensuring the excavation and protection of oil resources. Therefore, oil casing has irreplaceable importance in the current field of oil exploration.
Read more: Casing Pipe Manufacturing Process
