Application of Compound Salt Low-Damage Drilling Fluid System in BIN 425 Block
SUN Ya-rong;Drilling Engineering Technology Corporation,Shengli Petroleum Engineering Corporation Limited of SINOPEC;
In order to increase extraction result in Bin 425 block,compound salt low-damage drilling fluid system was researched and developed aiming at the formation feature. Treating agent strengthen the effect of reservoir protection by synergistic interaction,reducing solid particle and filtrates enter into the formation extremely. The drilling fluid was applied on 25 wells in Bin 425 oilfield. The wellbore was stable during the course of drilling. According to statistics,daily oil output of this block increased from 28. 6 t to 63. 1 t. Natural depletion decreases from 15. 7% to 7. 8%. The skin factor is-0. 31.
【CateGory Index】： TE254