Cel PDC bits do exist for small diameter but new bits with higher performance arc wanted by industry. A range of engineering softwares were developed to provide adequacy in the design of special drilling bits for slim hole application (use of new inset and plates).These existing softwares contribute to design and manufacture of a set of specific slim hole bits which are validated in this project.Based on an integrated design approach, a complete new line of bits has been created. This line of bits are performing better than the existing ones in the lab and in the field because of a better drilling efficiency : this line is the best trade off between dynamics, hydraulics and rock mechanics to date.Additional tests have led to a better understanding of the influence of the different design criteria on the performance.- Fabrication of PDC bits in 3"3/8 and 4" 3/4 OD.- Tests on drilling full size test bench to check the behaviour of the bits in various rocks and conditions. - Demonstration during industrial slim hole wells drilling. Program(-y) ENG-THERMIE 1 - Programme (EEC) for the promotion of energy technology in Europe (THERMIE), 1990-1994 Temat(-y) 5.2 - DRILLING Zaproszenie do składania wniosków Data not available System finansowania DEM - Demonstration contracts Koordynator SECURITY DBS Wkład UE Brak danych Adres AV. DU PONT DE LUTTRE 74 1190 Bruxelles Belgia Zobacz na mapie Koszt całkowity Brak danych