Control Lost Circulation in Well S25 of Block Y
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摘要: 国外Y 区HOS 区域南部边缘Pabdeh 地层灰岩裂缝性发育,岩性为低强度白云岩,钻进施工过程中易发生漏失,漏层分布没有规律,漏失层位多且具有连续漏失特点,在漏速对密度敏感的井段难以堵漏,且裂缝性漏失地层的承压堵漏施工困难。针对上述难点,应用DL-A 高温高压堵漏实验仪器,以2 mm 圆孔模板,对不同配方桥堵剂进行了模拟堵漏实验,优选出了适合2 mm 孔隙和裂缝性地层的桥堵剂,提出了该地区上部地层漏失以防为主,防堵结合的技术措施;中部地层采用低密度钻井液钻穿漏层,中下部地层采用随钻堵漏与承压堵漏相结合的钻井液技术,并优化堵漏浆配方以提高地层承压能力,该项技术在S25 井应用中获得了良好的堵漏效果。Abstract: Mud losses were frequently encountered when drilling the Pabdeh, a low strength dolomite formation in the south edge of the HOS, Block Y in a country. Many mud loss zones are present and irregularly distributed, with lost circulation continually lasting for a long time. Rates of mud losses are sensitive to mud weight. To control the mud losses which had been difficult to stop during drilling operation, a bridge LCM formulation was developed through experiment on a DL-A HTHP LCM tester. This LCM formulation is suitable for controlling mud losses into 2 mm wide fractures. By analyzing the mud loss behavior in whole well drilling operation, it is recommended that when drilling the top formation, more attention should be paid to mud loss prevention, and use LCM mud to stop them if mud losses do occur. In the upper middle section of the well, low density should be used to drill through the thief zones. In the lower middle and lower section of the well, a combination of "control mud losses while drilling" and "control mud losses under pressure" techniques can be applied to stop mud losses or mitigate the negative effect of mud losses on drilling operation. These practices have been proved successful in the drilling operation of the Well S25.
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王中华. 复杂漏失地层堵漏技术现状及发展方向 [J]. 中外能源,2014, 19(1):39-47. Wang Zhonghua. The status and development direction of plugging technology for complex formation lost circulation[J]. Sino-Global Energy,2014, 19(1):39-47. 王显光,苏长明,薛玉志,等. 防漏堵漏新技术在缅甸 D 区块的应用[J]. 钻井液与完井液,2011,28(2):51-54. Wang Xianguang,Su Changming,Xue Yuzhi,et al. Application of mud loss prevention and control technologies in block D myanmar[J]. Drilling Fluid &CompletionFluid, 2011,28(2):51-54. 苏长明,刘春文,鲁学明,等. 缅甸 D 区块钻井防漏堵漏技术[J]. 石油钻探技术,2010,38(5):18-21. Su Changming,Liu Chunwen,Lu Xueming,et al. Lost circulation prevention and plugging techniques used in block D in myanmar[J].Petroleum Drilling Techniques,2010,38 (5):18-21. 张希文,孙金声,杨枝,等. 裂缝性地层堵漏技术 [J]. 钻井液与完井液,2010,27(3):29-32. Zhang Xiwen,Sun Jinsheng,Yang Zhi,et al.Lost circulation control in fractured formations[J]. Drilling Fluid & Completion Fluid,2010,27(3):29-32. 张希文,李爽,张洁,等. 钻井液堵漏材料及防漏堵漏技术研究进展[J]. 钻井液与完井液,2009,26(6):74-79. Zhang Xiwen,Li Shuang,Zhang Jie,et al. Research progress on lost circulation materials and lost circulation control technology[J]. Drilling Fluid & Completion Fluid, 2009,26(6):74-79. 刘金华. 复合堵漏剂 DL21 封堵裂缝的室内研究 [J]. 钻井液与完井液,2008,25(1):50-51. Liu Jinhua. Lab research on sealing fissure by complex lost circulation material DL-1[J]. Drilling Fluid & Completion Fluid,2008,25(1),50-51. 贾佳,郭建华,赵雄虎,等. 吸水膨胀类堵漏材料性能评价与研究[J]. 钻井液与完井液,2012,29(4):16-23. Jia Jia, Guo Jianhua, Zhao Xionghu,et al. Evaluation and research on water-absorbable and swellable lost circulation material[J]. Drilling Fluid & Completion Fluid,2012,29(4):16-23. 杨振杰,梅露强,张建卿,等. 温变承压堵漏技术室内试验研究[J]. 油田化学,2014,31(1):17-20. Yang Zhenjie,Mei Luqiang, Zhang Jianqing,et al. Research on the pressure-bearing plugging technology utilizing temperature-change thickener[J].Oilfield Chemistry, 2014,31(1):17-20. 贾丽莉,田陆飞,刘振,等. 堵漏材料研究的进展 [J]. 材料研究与应用,2011,5(1):14-16. Jia Lili, Tian Lufei,Liu Zhen,et al. Research progress on lost circulation material[J]. Material Research & Application,2011,5(1):14-16. 狄丽丽,张智,段明,等. 超强吸水树脂堵漏性能研究 [J]. 石油钻探技术,2007,35(3):33-36. Di Lili, Zhang Zhi, Duan Ming,et al. Research of plugging ability of super-absorbent resin[J]. Petroleum Drilling Techniques, 2007,35(3):33-36.
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