... Abstract The use of drilling foams is increasing because foams exhibit properties that are desirable in many drilling operations. A good knowledge of cuttings transport efficiency under downhole conditions is essential for safe and economical foam drilling. Previous cuttings transport studies...

... Abstract This paper presents operational results of the pilot test under near balanced conditions of a new foam drilling fluid developed by PDVSA-Intevep in an inclined well drilled in La Paz Field in Western Venezuela. The target formations were a fractured, depleted limestone formations...

... Abstract The re-circulating foam drilling and completion fluids (RFDCF) is a low density system developed by Shengli Drilling Mud Company of China. Its outstanding advantages are that no special equipment needed in field operation, the density can be adjusted between 0.60-0.99g/cm 3 and can...

... drive liner drilling environmentally sensitive area foam drilling project sandstone separator tank foam drilling operation tank drillpipe compressor foam drilling circulation assembly foam generation drilling equipment drilling fluid management & disposal drill pipe selection iadc...

... conducted three field trials with under balanced drilling through oil bearing reservoirs between July 1992 and September 1993. crude reservoir pressure foam drilling operation attenuation emmwd oman annular pressure drilling horizontal section underbaianced drilling directional drilling...

... and recommendations are made with regard to the major areas discussed in the paper concerning what well conditions lend themselves to air drilling, and when to use mist, inhibited mist or foam. Methods to utilize air drilling to its fullest potential such as the use of air hammers and polymer foam drilling are also...