CAJ | 학술논문

涪陵地区地质条件复杂，导致钻井机械钻速及钻井周期差别大、井下复杂情况时有发生。为了实现优质快速钻井，中国石化发展了适合涪陵页岩气田地质特点的系列钻井关键技术，通过攻关研究与现场实践，先后形成了涪陵页岩气钻井工程优化设计技术、浅层直井段快速钻井技术、二开定向井段快速钻井技术、丛式水平井三维井眼轨迹控制技术、适应于涪陵页岩地层长水平段钻进的油基钻井液技术、页岩气储层长水平段油基钻井液水平井固井技术、复杂山地条件“井工厂”钻井技术等，基本形成了适用于涪陵页岩气田的钻井工程技术体系。与此同时，在钻井中又出现一些新问题，为此提出了涪陵页岩气田钻井技术的发展建议，以期为国内类似页岩气区块的钻井提速降本提供借鉴。
부릉지구지질조건복잡，도치찬정궤계찬속급찬정주기차별대、정하복잡정황시유발생。위료실현우질쾌속찬정，중국석화발전료괄합부릉혈암기전지질특점적계렬찬정관건기술，통과공관연구여현장실천，선후형성료부릉혈암기찬정공정우화설계기술、천층직정단쾌속찬정기술、이개정향정단쾌속찬정기술、총식수평정삼유정안궤적공제기술、괄응우부릉혈암지층장수평단찬진적유기찬정액기술、혈암기저층장수평단유기찬정액수평정고정기술、복잡산지조건“정공엄”찬정기술등，기본형성료괄용우부릉혈암기전적찬정공정기술체계。여차동시，재찬정중우출현일사신문제，위차제출료부릉혈암기전찬정기술적발전건의，이기위국내유사혈암기구괴적찬정제속강본제공차감。
T he complex geological conditions in the Fuling region have led to many drilling problems such as inconsistent rate of penetrations ,different drilling cycles and complex accidents .In order to achieve high quality and highly efficient drilling performance ,Sinopec has developed a series of drilling technologies suited to the geological features of the Fuling shale gas field .The key drilling technologies for Fuling shale gas field were analyzed and it was pointed out that by addressing the key issues and field applications the following technologies had been developed :drilling engineering design optimization ,high-efficiency drilling techniques for shallow vertical section and second spud directional sections ,three-dimensional trajectory controlling technology for optimizing induced fracture cluster spacing horizontal wells ,the use of oil-based drilling fluid technology for long horizontal sections ,new cementing technology for long horizontal sections drilled with oil-based drilling fluid ,and developing an ideal pad drilling pattern for complex mountainous regions .Thus ,the drilling technology systems for Fuling shale gas were generally established .Furthermore , the drilling technology development suggestions proposed for the new drilling issues ,provided references for other similar shale gas blocks in China with a result of increasing ROP and the reducing drilling cost .