Study on the enhancement mechanism of the interface cementing strength of YLD-1 oil/water well plugging agent;

Study and application of high pressure bearable acid soluble plugging agent ZC6 - 6;

A plugging agent XNJG was prepared with polysilicone gelling solution and crosslinking stabilizing solution as materials for resolving the problems of profile modification agent losing during plugging and modifying high permeable zone or tiny crack in middle and low permeable reservoir.

Laboratory experiments were done on the evaluation of a composite lost circulation material (LCM) prepared by Polyacrylamide and cotton fibers on a FA Model Filter tester.

The effects of every component on the performance of the lost circulation material were examined.

The result showed that the lost circulation material had good lost circulation effect on the crack of oil layer.

The development and performance research of Compound Sealing agent XZ;

Due to increasing of low - layer casing leakage wells and casing scurry wells in Shengtuo Oilfield, thixotropic cement sealing agent TC - 1 was developed according to the characteristics of plugging casing leakages.

A kind of modified urea-formaldehyde resin sealing agent for sealing leak points of casing pipe in shal- low layer was prepared using urea-formaldehyde resin as main material and adding polyacrylamide.

A new lost circulation additive for drilling of high permeability formation

APPLICATION OF HHH LCM TO LOST CIRCULATION CONTROL AT MULTIPLE POINTS IN A WELL;