CAJ | 학술논문

Klari-2st井是印尼Arar区块1口定向探井，为完成区块勘探，对该井?215.9 mm裸眼漏封井段，注水泥回填，用?152.4 mm注水钻头开眼，扩眼器扩孔，形成?177.8 mm水泥环井眼，下入?149.2 mm膨胀管封固井壁，以完成四开钻井作业。在分析前次水泥环失败原因基础上，改进固井液体系，浆体中加入膨润土、纤维和膨胀剂等材料，降低水泥石强度和脆性，提高水泥石韧性及与井壁的胶联强度。应用抗冲击高韧性水泥浆，结合高效冲洗液+黏性隔离液的前置液体系等措施，完成了特殊要求的水泥环打塞作业，满足了膨胀管最大井径小于190 mm的要求。
Klari-2st정시인니Arar구괴1구정향탐정，위완성구괴감탐，대해정?215.9 mm라안루봉정단，주수니회전，용?152.4 mm주수찬두개안，확안기확공，형성?177.8 mm수니배정안，하입?149.2 mm팽창관봉고정벽，이완성사개찬정작업。재분석전차수니배실패원인기출상，개진고정액체계，장체중가입팽윤토、섬유화팽창제등재료，강저수니석강도화취성，제고수니석인성급여정벽적효련강도。응용항충격고인성수니장，결합고효충세액+점성격리액적전치액체계등조시，완성료특수요구적수니배타새작업，만족료팽창관최대정경소우190 mm적요구。
Well Klari-2st is a directional exploratory well in Block Arar, Indonesia. In order to accomplish the exploration of the block, the ?215.9 mm leaking openghole section is backiflled with cement;then drill with ?152.4 mm drill bit and enlarge the hole with a reamer to form a ?177.8 mm cement ring hole;then run in ?149.2 mm expansion pipe to seal the wellbore so as to ifnish the 4th spud drilling. By analyzing the failure on pervious cement ring, we improved the cementing lfuid system and added bentonite, ifber and expansion agent to the slurry to reduce the strength and brittleness of set cement stone and improve the toughness of set cement and its crosslinking intensity with well wall. By using shock-resistant high tenacity cement accompanied with the prepad lfuid system of efif-cient lfushing lfuid and viscidity spacer lfuid and other methods, we successfully pumped cement plugs, which satisifed the requirement that the maximum diameter of expansion pipe wellbore is less than ?190 mm.