Study And Application Of Drilling Fluids Nanometer Additive

After forty years exploitation, it becomes much harder for Shengli oilfield to increase oil production. To keep a steady increase in the output of oil, new technology must be developed constantly to provide technical support for the exploitation of reservoir. New development of modern nanometer provides a possible solution for the current problem of drilling fluids technology. Nowadays, the research and application of nanometer technology and nanometer materials are in the ascendant. Many valuable achievements are made in the scientific research and applied into the exploitation of the oilfield. However, it remains blank in the field of drilling fluids. Both laboratory study and testing on the site show that MMH perform satisfactorily not only in improving drilling fluid performance and ensuring safety down to the oil well, but also in protecting the oil and gas reservoirs. This essay is based on the research of MMH and BPS, using physical and chemical method to change these two kinds of colloid particles charged positive electricity into nanometer order colloid particles and thus make positive electricity additive have the characteristics of nanometer materials. Nanometer materials are made up of nanometer order particles whose dimension is between 1 to 100nm. The size of the particle is between transition area of atomic cluster and macroscopic objects, therefore, nanometer materials have the following characteristics: 1. Exterior domino effect. That is it has a very large specific surface and very high surface activity. 2. Small size domino effect. That is because of the diminishing of the size of particle and notable accretion of the specific surface, macroscopic physical characters change. The new type of nanometer additive developed by this item makes use of the above characters of positive charge and nanometer materials to change properties of colloid and suspend substance in the drilling fluids, and thus optimize its performance. This item introduces nanometer technique into the field of drilling fluids, deepens knowledge of microcosmic functions mechanism of drilling fluids, and also achieves a technical leap of drilling fluids'research and application. It can solve technique problems as instability of well...