The research and application of asbestos-fabric composite sand control in Sebei Gas Field

There is only one kind of glass fabric composite, high cost and tubing plugging caused by the composite, in order to solve this problem, research of asbestos-fabric composite optimizing selection is carried on. By means of a great deal of indoor experiments, asbestos fabric is chosen and its composite formula is developed, thus the sand control system of fabric composites is supplemented. The formula is coated sand+0.5%6-40 asbestos+10%ZCF externally consolidating agent. After the application of the sand control to Well Se5-2-3, the result shows that asbestos fabric mixes with sand carrier and sand more easily, and is pumped more easily than glass fabric. In addition, asbestos fabric does not plug tubing. So the first application of asbestos fabric sand control is successful and the adaptability of asbestos fabric sand control is farther proved. By the end of November of 2006, this well had been in normal production with choke of 6 mm, with no sand fluxing, and with average gas yield of 6.1×10⁴m³/d and water yield of 0.17 m³/d.