Oil Well Sand Prevention Technology Research

Liaohe oilfield geological structure complex,mainly in heavy oil production,heavy oil reservoir rock loose structure,poor compaction and cementation,high viscosity,strong sand carrying capacity,easy to produce sand during thermal recovery process,and the high number of oil well stimulation,formation deficit serious,with the oil well stimulation cycles and recovery the increase in the degree of formation,serious deficit,downhole conditions worse,casing deformation wells increases,the sieve tube deformation failure,coupled with the water steam channeling and influencing factors of sand production reservoir sandstone,tectonic framework of loose sand,directly led to the situation of frequent and diverse,therefore sand production problem has been a prominent problem.Through restricting the normal production of the oil. Based on the research analysis,tracking site sand out of oil well in the process of development in recent years,with the domestic and foreign oil industry sand control technology and the actual situation of the field,has now developed a mechanical sand control, chemical sand discharge and other comprehensive methods of sand control and more than thirty kinds of oil,gas,water well chemical sand control technique technology, basically to effectively alleviate the sand and sand control problem of Liaohe oil field. But along with the transformation of oil production mode of development,mining methods such as SAGD,the application of steam flooding,horizontal wells,offshore oil field development and put forward new and higher demands on the conventional sand control technology. Study on the major oil companies abroad relatively early,the technology is more advanced,the domestic oil companies also have the research and application of related technology, through the research of the gravel packing model can be used for low density of artificial sand and layered sand control, hierarchical control technology,and combined with the actual situation of the Liao River oil sand production and sand control materials at home and abroad advanced and sand control technology,lay the foundation for research on sand control.