Petroleum exploration and development equipment refers to comprehensive equipment for oil and natural gas exploration, drilling, development, storage and transportation, including various types of geophysical prospecting and logging equipment, drilling equipment, oil and gas production equipment, downhole operation equipment, oil and gas gathering and transportation Equipment, offshore drilling platform equipment, etc. and related accessories and tools; oil refining and petrochemical equipment refers to the complete set of equipment required in the whole process of oil and natural gas processing and conversion, including general equipment (such as various process compressors, expanders, etc.) , pumps and valves, etc.) and medical equipment (such as reactors, towers, heat exchange equipment, industrial furnaces, storage and transportation equipment, medical machinery, etc.). The equipment specifications and parameters of the oil refining and petrochemical industry are determined by the process of the oil refining and petrochemical industry. The oil refining and petrochemical industry is a process industry. The requirements for automation are high, and it is required to be able to run continuously and stably for a long period of time, so there are high requirements for the reliability of the equipment. The oil and gas exploration, development and production process is characterized by multiple links, complex technologies, and high individual requirements.
Stage Collar is stage cementing distributor,Mainly used to multistage well cementing process. From multistage cementing to get the good results, sloving the difficulties of cement upward going in deep well,poor cementing quality problems.
1.Excessive cementing in one time.
2.Stratum can not bear too much pressure liquid column.
3.Packer special layers;
4.Preventing annular channeling after cementing.
5.large temperature difference between isolation section, the performance of the grout is not easy to adjust.
Type:
-Mechanical Stage Collar
-Hydraulic Stage Collar
-Free-drilling stage collar
MECHANICAL STAGE COLLAR
- Short body, Complete stress is small.
- Special bypass design solving the liquid compression between opening dart and closing plug.
- Lock ring design ensures permanently closed after completion.
Audited Supplier 
){kind=link}