CAJ | 학술논문

哈拉哈塘区块是中国石油塔里木油田黑油增储上产的主要区块之一,该区油藏埋深通常在6800 m 左右,钻井过程中存在中上部地层阻卡严重,容易泥包钻头,二叠系、石炭系井壁稳定性差,易垮塌,深部地层可钻性差,机械钻速低,超长裸眼事故复杂多和目的层含硫化氢、又漏又溢等技术难点.储层超深、地层复杂、钻井难度大、钻井周期长,严重制约了油田增储上产的步伐.针对这些施工难点,进行了优化钻井水力参数、优选钻头和涡轮、旋冲工具复合钻井、事故复杂预防、超长裸眼井壁稳定、碳酸盐岩储层安全钻井技术等研究应用,取得了明显成效,平均单井钻井周期较之前缩短1个月以上,有效控制了事故复杂的发生,实现了该区安全快速钻井的目标,解决了该区钻井速度慢、事故复杂多的技术难题.
합랍합당구괴시중국석유탑리목유전흑유증저상산적주요구괴지일,해구유장매심통상재6800 m 좌우,찬정과정중존재중상부지층조잡엄중,용역니포찬두,이첩계、석탄계정벽은정성차,역과탑,심부지층가찬성차,궤계찬속저,초장라안사고복잡다화목적층함류화경、우루우일등기술난점.저층초심、지층복잡、찬정난도대、찬정주기장,엄중제약료유전증저상산적보벌.침대저사시공난점,진행료우화찬정수력삼수、우선찬두화와륜、선충공구복합찬정、사고복잡예방、초장라안정벽은정、탄산염암저층안전찬정기술등연구응용,취득료명현성효,평균단정찬정주기교지전축단1개월이상,유효공제료사고복잡적발생,실현료해구안전쾌속찬정적목표,해결료해구찬정속도만、사고복잡다적기술난제.
Halahatang area is one of the main blocks for black oil reserve increasing in Tarim Oilfield, CNPC. The reservoir depth is usually around 6 800 m. the drilling process is troubled by pipe freezing in middle-upper formations, balled bit, weak wellbore stability in formations of Permian System and Carboniferous System, prone to collapse, poor drillability of deep reservoir formations, low rate of penetration, super-long open hole with more trouble, hydrogen sulphide bearing target, leakage and blowout coexisting, etc. Oil field reserve increasing pace is constrained by super-deep reservoir, complex formation, difficult drilling, long drilling period, etc. According to these difficulties, a series of studies are conducted, such as optimizing hydraulic drilling parameters, selecting bit and turbine, accident prevention, super-long open hole wellbore stability, and carbonate formation safe drilling, and good benefit has been obtained, with aver-age individual drilling period shortened by one month, and good control of accidents happening. The objective of safe and fast drilling was obtained and the difficulties of low drilling rate and accidents prone are solved.