Behavior of polycrystalline diamond compact cutters while drilling in bottomhole conditions - field applications

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:7369359

Cortes, J; Besson, A

Research carried out during several years on polycrystalline diamond compact cutters is described. The research included two main parts: 1) laboratory study on the behavior of polycrystalline diamond cutters; and 2) field applications. A drilling simulator was developed to show the elastoplastic destructive rock behavior under bottomhole conditions. Major characteristics of the simulator were: 1) rotating speed up to 300 rpm; 2) test pressure up to 600 bars; 3) visualizaion of cutter action with a high-speed camera with up to 10,000 pictures/second; 3) measurement of cutter temperature while drilling; and measurements of the bit weight, torpue, rate of penetration, and bottomhole pressure. The results allowed the definition of the different parameters that improve the rate of penetration such as rake angle, clearance angle, side clearance angle, and cutter configuration. Following the laboratory results, new drill bits were designed and field tested. From the numerous tests which were performed in the field, it is then possible to compare standard bits with new bits in the same drilling conditions. Major emphasis was given to a study of turbodrilling and bit performance at high rotating speeds.

• Research Organization: Compagnie Francaise des Petroles, Boulogne, France
• OSTI ID: 7369359
• Report Number(s): SAND-81-0036C; CONF-810105-
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150901* -- Geothermal Engineering-- Drilling Technology & Well Hardware
CARBON
DIAMONDS
DRILL BITS
DRILLING
DRILLING EQUIPMENT
ELEMENTS
EQUIPMENT
Geothermal Legacy
MATERIALS TESTING
MINERALS
NONMETALS
PERFORMANCE TESTING
ROCK DRILLING
ROCKS
SIMULATION
TESTING