How to apply External casing packer for thermal recovery in oil well cementing
- Categories:External casing packer
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- Time of issue:2022-05-12
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(Summary description)In the case of complex geological conditions, active underground fluids, and poor cementing quality, after statistics, comparison, analysis,
How to apply External casing packer for thermal recovery in oil well cementing
(Summary description)In the case of complex geological conditions, active underground fluids, and poor cementing quality, after statistics, comparison, analysis,
- Categories:External casing packer
- Author:
- Origin:
- Time of issue:2022-05-12
- Views:0
In the case of complex geological conditions, active underground fluids, and poor cementing quality, after statistics, comparison, analysis, and research, through measures such as improving the cement slurry system and using casing packers, the high-quality cementing rate in this area has been improved. Greatly improve.
In addition, the cementing construction of the External casing packer for thermal recovery in the high-pressure oil and gas well also solves the problem of the high-pressure oil and gas running into grooves when the cement solidifies.
External casing packer for thermal recovery is also widely used in segmented cementing. After the casing packer is expanded, the cement slurry is returned to the casing for cementing through the multi-stage cementing device.
Lost wells can be divided into three categories: fractures, cavernous lost wells and permeable lost wells. Different leaks should take different construction measures during drilling and cementing construction. According to the leakage situation, the leakage layer should be treated before cementing, and the balanced pressure cementing design should be carried out after the treatment. For leakage-prone layers and collapsed layers, conventional cementing leakage prevention measures include increasing the lower-density pre-fluid, controlling the length of the cement sealing section, and using a low-density cement slurry system. It is also possible to use the casing outer packer to seal the above interval in layers, so as to solve the problems of oil, gas, water channeling and leakage pressure in the above well interval, resulting in insufficient return height.
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