The Study On Paraffin Control Technology Of Deep High Pressure And High Wax Condensate Gas Well In BZ Block

The condensate gas reservoir in BZ block is a kind of complex gas reservoir with high pressure and high wax content,and the study of paraffin deposition is a difficult problem for deep gas condensate reservoir exploitation in china.In actual production,with the occurrence of wax deposition in different oil and gas fields,a lot of practical applications of paraffin removal and wax prevention technology have been carried out on the spot,and the observability of the test results has been proved.At present,the chemical paraffin removal technology is simple,easy to operate and has broad application prospects.In BZ block,especially the BZ1 well,the wax is the most serious,and the wellbore is blocked several days after the well opened.Therefore,it is necessary to shut the well and do the paraffin removal work.In this paper,the paraffin formation mechanism and wax deposition conditions of condensate gas well are studied,in addition,the existing application process of paraffin removal and paraffin control technology was investigated.At the same time,combined with the production situation in BZ block,it was finally decided to use the chemical paraffin removal method to clean the paraffin in this area.The results show that if the chemical paraffin remover is selected rationally and combined with the injection process,the well plugging condition can be alleviated and the gas well production can be improved.