Research, Expert Decision-based Drilling Fluid Design

The designing of Drilling fluids is an important step in well drilling engineering .The technology in Drilling fluids is important constituent of oil-gas well drilling engineering .With the difficulties of well drilling raised , it act as more and more important role in ensuring safety, high quality and fast well drilling . Drilling fluids is the flood of well drilling, and is one of the main factor concerning success or fail in well drilling.At present , the Drilling fluids used in oil-gas well drilling engineering in our country is mostly confected through experiment in laboratory by technician who has many experiences .There are many defects designed by this way ,especially many experiences and representative directions for Drilling fluids was not saved effectively , and the experts ' experiential knowledge was not absorbed effectively.With the information management of oil field going deeply , the traditional designing method based on experience in lab does not adapt to the demands of new conditions . So , in this paper , we discuss the method that how to use the theory and technology of ES System in Drilling fluids Designing , and analyse and set up an ES System frame of drilling fluids designing in terms of knowledge acquisition , knowledge show and knowledge reasoning etc . At last we structure a reasoning modal on the basis of the experts' experience knowledge and the adding knowledge of directions for Drilling fluids.Based on this , we build an opening ES System for Drilling fluids design combine with advanced computer technology . It can provide us scientific designing parameters ,correct styles of Drilling fluids and reasonable measures that reach the aim of enhancing confecting efficiency and drilling well with high grade and speed.