CAJ | 학술논문

伊朗雅达油田地质条件复杂，为碳酸盐岩储层，具有高温、高压及多压力系统，并含有高浓度硫化氢及二氧化碳酸性气体。在2001到2003年间施工了5口探井，井深4500~5000 m，普遍钻井存在着机械钻速低、井漏、压差卡钻、高压沥青层侵入等突出问题，钻井周期长，安全快速钻井面临巨大的挑战。文中分析了雅达油田钻完井存在的难点以及优快钻井技术应用方案，包括灰岩地层压力检测技术、非渗透防卡钻井液技术、高效破岩及优选钻井参数、高压沥青层钻井技术为特色的雅达油田安全快速成井配套技术等，这些成果在雅达油田一期的井身结构、钻头选型、钻井提速和钻井液等方面进行了全面应用，平均机械钻速较前期提高40%以上，取得了显著的效益。
이랑아체유전지질조건복잡，위탄산염암저층，구유고온、고압급다압력계통，병함유고농도류화경급이양화탄산성기체。재2001도2003년간시공료5구탐정，정심4500~5000 m，보편찬정존재착궤계찬속저、정루、압차잡찬、고압력청층침입등돌출문제，찬정주기장，안전쾌속찬정면림거대적도전。문중분석료아체유전찬완정존재적난점이급우쾌찬정기술응용방안，포괄회암지층압력검측기술、비삼투방잡찬정액기술、고효파암급우선찬정삼수、고압력청층찬정기술위특색적아체유전안전쾌속성정배투기술등，저사성과재아체유전일기적정신결구、찬두선형、찬정제속화찬정액등방면진행료전면응용，평균궤계찬속교전기제고40%이상，취득료현저적효익。
Yadavaran Oilfield of Iran has complex geologic conditions; it is a carbonate reservoir with high temperature and high pressure and multiple pressure systems, and contains acidic gases like high concentrations of hydrogen sulfide, carbon dioxide, etc. Five exploration wells with depths of 4 500-5 000 m were drilled from 2001 to 2003, which all experienced outstanding issues of low rate of penetration, mud loss, differential sticking, heavy oil influx, etc. These wells were drilled with long drilling period, and so safe and fast drilling faced great challenge. This paper has analyzed the difficulties in drilling and completion operations and the application scheme of optimized fast drilling technology in the field, including pressure detection technique in limestone formation, non-permeate anti-sticking drilling fluid technology, highly efficient rock breaking and parameters optimization, heavy oil layer drilling technology, etc. These solutions were fully utilized in casing program, bit selection, rate of penetration improvement and drilling fluids, etc., and have achieved remarkable economic benefit with average rate of penetration up by over 40%.