CAJ | 학술논문

中国石化近几年在四川盆地及周缘页岩气勘探开发取得了重要进展。但该地区页岩气水平井钻井速度低、钻井周期长、成本高、成井质量不高，严重影响了该地区页岩气商业化勘探开发进程。系统总结了四川盆地及周缘的涪陵大安寨、涪陵龙马溪、彭水和建南等地区页岩气水平井钻井面临的主要问题：浅部地层出水空气钻井受限、定向段井眼尺寸大机械钻速低、井漏频繁、气体钻井易井斜以及水平段油基钻井液固井质量差。针对上述问题，从浅层水控制措施、泡沫定向钻井技术试验、井漏的预防与处理、空气钻井防斜打直工具研发、页岩气水平井固井对策以及“井工厂”钻井作业模式攻关与应用等6个方面提出了应对技术措施，为页岩气钻井技术攻关和现场施工提供了借鉴与参考。
중국석화근궤년재사천분지급주연혈암기감탐개발취득료중요진전。단해지구혈암기수평정찬정속도저、찬정주기장、성본고、성정질량불고，엄중영향료해지구혈암기상업화감탐개발진정。계통총결료사천분지급주연적부릉대안채、부릉룡마계、팽수화건남등지구혈암기수평정찬정면림적주요문제：천부지층출수공기찬정수한、정향단정안척촌대궤계찬속저、정루빈번、기체찬정역정사이급수평단유기찬정액고정질량차。침대상술문제，종천층수공제조시、포말정향찬정기술시험、정루적예방여처리、공기찬정방사타직공구연발、혈암기수평정고정대책이급“정공엄”찬정작업모식공관여응용등6개방면제출료응대기술조시，위혈암기찬정기술공관화현장시공제공료차감여삼고。
In recent years, there has been a major breakthrough in shale gas exploration in Sichuan basin and its vicinity by SINOPEC, but the commercialization process of exploration and development is influenced by low penetration rate, long drilling cycle, high drilling cost and bad well completion quality in this area.In this article, the main challenges in shale gas horizontal drilling are summarized, air drilling limited by shallow formation water, low ROP due to large diameter of di-rected section, frequent circulation lost, hole deviation by air drilling and poor cementing quality in horizontal section with oil based drilling fluid.Aiming at the above challenges, the technical countermeasures are proposed in 6 aspects:shallow formation water control, test of directional drilling with foam drilling fluid, prevention and treatment for circulation lost, de-velopment of anti-deviation device for air drilling, cementing of shale gas horizontal well and research and application of multi-well pad drilling technology.All these can provide reference for the research on shale gas drilling technology and con-struction.