Research and practice of fine sand control for horizontal well in Panyu 30-1 offshore gas field

The Panyu 30-1 gas field in deep water is mainly developed by horizontal wells and its formation is easy to sand, so it is necessary to adopt pre-sand control when put into production. The high investment cost for deep offshore gas fields’ development has determined that sand control must be reliable and secure, and the research about the advanced high quality screen structure and block sand precision is necessary. By using the actual formation core, this paper determined the suitable precision of sand blocking with advanced high quality screen through experiments, and got the new sand controlling design criteria which is different from the conventional one. The actual production figures show the gas wells had high yield and good sand control effect after sand controlling, which provides a new fine-sand design idea for the sand control in such kinds of gas fields. At the same time, specific research and practice indicate that the block sand precision determined by the sanding simulation experiment is more reliable than those by sanding design criteria.