CAJ | 학술논문

林4-36X井是二连油田低压区块上的一口开发井,目的层段压力系数0.6～0.9,钻井过程中在油层段1372.4 m和1485.3 m处发生漏失,井漏时钻井液密度1.19 g/cm3;在发生井漏的同时,也存在着油水外浸.在井温低、水泥用量小的情况下,采用低密度防漏防窜水泥浆体系固井,通过降低水泥浆密度并在水泥中加入弹性防漏堵漏材料,提高水泥浆的防窜性能等技术措施进行固井,施工作业顺利,电测固井质量优质.
림4-36X정시이련유전저압구괴상적일구개발정,목적층단압력계수0.6～0.9,찬정과정중재유층단1372.4 m화1485.3 m처발생루실,정루시찬정액밀도1.19 g/cm3;재발생정루적동시,야존재착유수외침.재정온저、수니용량소적정황하,채용저밀도방루방찬수니장체계고정,통과강저수니장밀도병재수니중가입탄성방루도루재료,제고수니장적방찬성능등기술조시진행고정,시공작업순리,전측고정질량우질.
LIN 4-36X is a development well located in the low-pressure block of Erlian Oilfield. Pressure coefficient of its target layer is between 0. 3 to 0. 4. In the course of drilling, leakage happened in the positions of 1372. 4m and 1485. 3 m. The fluid density came to 1.19 g/cm3 when leakage and water soak happened. In that condition, low-density drilling fluid for leak protection and water shutoff was used for cementing and the added flexible leak-proof material made the cementing operation become smooth. Electrical logging results showed that the cementing was of high quality.