CAJ | 학술논문

卡拉赞巴斯油田老区浅层调整井固井后存在声幅测井质量合格率低、环空带压严重的问题，分析其原因是由于前期水泥浆设计指导原则脱离油田实际。针对现场实际要求，通过去掉降滤失剂、减少分散剂使用、选择合理实验温度、优化外掺料配比等措施调整水泥浆配方，调整后的低温早强水泥浆体系稠化时间、终凝时间可分别控制在2 h、4 h以内，8 h强度可达3 MPa以上。对调整后的水泥浆体系进行了8井次的现场应用，固井合格率由前期的69%提高到90%以上，基本上解决了该油田薄油层、薄隔层、活跃水层调整井固井难题，为油田的高效开发创造了良好条件。
잡랍찬파사유전로구천층조정정고정후존재성폭측정질량합격솔저、배공대압엄중적문제，분석기원인시유우전기수니장설계지도원칙탈리유전실제。침대현장실제요구，통과거도강려실제、감소분산제사용、선택합리실험온도、우화외참료배비등조시조정수니장배방，조정후적저온조강수니장체계주화시간、종응시간가분별공제재2 h、4 h이내，8 h강도가체3 MPa이상。대조정후적수니장체계진행료8정차적현장응용，고정합격솔유전기적69%제고도90%이상，기본상해결료해유전박유층、박격층、활약수층조정정고정난제，위유전적고효개발창조료량호조건。
After cementing job in the shallow adjustment wells in matured blocks of Karazhanbas Oilifeld, there existed some problems like low acoustic amplitude logging pass rate, severe annulus pressure. Analysis shows that the reason for this is that the guidelines for design of previous cement slurry gradually deviated from the actual conditions of the oilifeld. In view of the actual ifeld requirements, the cement slurry formulation was adjusted by removing the lfuid loss agent, reducing the use of dispersants, choosing reasonable experimental temperature and optimizing the admixture ratio. The thickening time and initial setting time of the adjusted low temperature early strength cement slurry system were controlled within 2 h and 4 h respectively.If controlled within 8 h, its strength may be over 3 MPa. This adjusted cement slurry system was applied for the eight well times, and the cementing qualiifcation rate was up from 69% to over 90%, which has basically solved the dififculty in cementing of adjustment wells with thin oil layers, thin isolating layers, active aquifer, and has created a favorable condition for efifcient development of the Oilifeld.