Application of a Micro Expansion Sealing Technology in a Well in Bohai Oilfield
The quality of cementing outside the production casing of oil and gas wells is poor,and there is interference between oil,gas,and water layers after perforation,as well as the risk of oil and gas flowing up to the wellhead casing head.Generally,casing removal and secondary cementing are used to treat the poor cementing quality well section,which has a long construction period and high cost.Based on this,a micro expansion LTSD sealing technology is introduced,which uses partition boards on the top and bottom of the perforation section to perform high-strength sealing on sections with poor cementing quality.It has been successfully applied for the first time in a well in Bohai Oilfield,ensuring the smooth implementation of drilling operations and providing a low-cost solution and idea for the treatment of sections with poor cementing quality.
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