Gel Plugging System for Oil-Based Drilling Fluid and Its Application
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摘要: 通过对页岩气钻井的研究和分析,综合比较国内外油基钻井液堵漏技术的不足,研究了一种油基钻井液用凝胶堵漏体系。通过红外测试、X射线衍射和扫描电镜分析研究了凝胶体系的相关组分,证明了结合剂合成成功。通过高温高压养护釜进行养护,使用压力实验机测定凝胶堵漏体系的抗压强度可以达到3.2 MPa,室内实验显示化学凝胶流变性好,密度可调(0.77~1.3 g/cm3),成胶强度可调(1.7~3.2 MPa);同时凝胶体系和油基钻井液之间具有良好的兼容性,向凝胶堵漏体系中加入20%油基钻井液后抗压强度也可以达到1.8 MPa。现场应用显示油基钻井液用凝胶堵漏体系的抗压强度可以达到6.8 MPa,表明该凝胶堵漏体系具有优异堵漏效果,具有广阔的应用前景。Abstract: Based on the research and analysis of modern shale gas drilling, and comprehensively comparing the shortage of oilbased drilling fluid plugging technology at home and abroad, a gel plugging system for oil-based drilling fluid is studied. The related components of the gel system were studied by IR, X-ray diffraction and scanning electron microscopy. The results showed that the binding agent was successfully synthesized. The high temperature and pressure curing kettle was used for curing. The compressive strength of the gel plugging system could reach 3.2 MPa by using the pressure tester. The laboratory tests showed that the rheological properties of the gel were good, the density was adjustable (0.77-1.3 g/cm3), the gel strength was adjustable (1.7-3.2 MPa), and the gel system and the oil-based drilling fluid system had good compatibility, adding 2 to the gel plugging system. The compressive strength of 0 oil-based drilling fluid can also reach 1.8MPa. Field application shows that the compressive strength of gel plugging system for oil-based drilling fluid can reach 6.8 MPa, which perfectly displays the excellent plugging effect of gel plugging system and has broad application prospects.
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Key words:
- Gel plugging system /
- Oil-based drilling fluid /
- High strength /
- Adjustable density
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[1] 唐国旺, 宫伟超, 于培志. 强封堵油基钻井液体系的研究和应用[J]. 探矿工程, 2017, 44(11):21-25.TANG Guowang, GONG Weichao, YU Peizhi. rsearch and application of strong plugging oil-based drilling fluid system[J]. Exploration Engineering, 2017, 44(11):21-25. [2] 刘均一, 邱正松, 罗洋, 等. 油基钻井液随钻防漏技术实验研究[J]. 钻井液与完井液, 2015, 32(5):10-14.LIU Junyi, QIU Zhengsong, LUO Yang, et al. Experimental study on oil-based drilling fluid leak prevention while drilling[J]. Drilling Fluid & Completion Fluid, 2015, 32(5):10-14. [3] 梁文利. 深层页岩气油基钻井液承压堵漏技术[J]. 钻井液与完井液, 2018, 35(3):37-41.LIANG Wenli. Pressure plugging technology of deep shale gas oil-based drilling fluid[J]. Drilling Fluid & Completion Fluid, 2018, 35(3):37-41. [4] 崔云海, 许明标. 水平井裂缝油基钻井液水泥浆堵漏技术[J]. 长江大学学报(自科版), 2015, 12(8):53-56. CUI Yunhai, XU mingbiao. Plugging technology of cement slurry for horizontal well fracture oil-based drilling fluid[J]. Journal of Changjiang University, 2015, 12(8):53-56. [5] 李红梅, 申峰, 吴金桥, 等. 新型油基钻井液堵漏剂性能[J]. 钻井液与完井液, 2016, 33(2):41-43.LI Hongmei, SHEN Feng, WU Jinqiao, et al Performance of new oil-based drilling fluid plugging agent[J]. Drilling Fluid & Completion Fluid, 2016, 33(2):41-43. [6] 舒曼, 赵明琨, 许明标. 涪陵页岩气田油基钻井液随钻堵漏技术[J]. 石油钻探技术, 2017, 45(3):21-26.SHU Man, ZHAO Mingkun, XU mingbiao. Oil based drilling fluid plugging technology while drilling in Fuling shale gas field[J]. Petroleum Drilling Techniques, 2017, 45(3):21-26. [7] 孙其诚, 王光谦. 颗粒物质力学导论[M]. 北京:科学出版社, 2009:94-99. SUN Qicheng, WANG Guangqian. Introduction to mechanics of granular matter[M]. Beijing:Science Press, 2009:94-99. [8] 李家学, 黄进军, 罗平亚, 等. 随钻防漏堵漏技术研究[J]. 钻井液与完井液, 2008, 25(3):25-28.LI Jiaxue, HUANG Jinjin, LUO pingya, et al. Research on lost circulation prevention and plugging technology while drilling[J]. Drilling Fluid & Completion Fluid, 2008, 25(3):25-28. [9] 刘明华, 孙举王中华等. 非常规油气藏水平井油基钻井液技术[J]. 钻井液与完井液, 2013, 30(2):1-5.LIU Minghua, SUN Ju, WANG Zhonghua, et al. Oil based drilling fluid technology for horizontal wells in unconventional reservoirs[J]. Drilling Fluid & Completion Fluid, 2013, 30(2):1-5. [10] 王绪美, 解洪祥, 赵福祥, 等. 钻井液用新型无荧光纳米处理剂PNP的研究[J]. 钻井液与完井液, 2014, 31(6):13-16.WANG Xumei, XIE Hongxiang, Zhao Fuxiang, et al. Study on PNP as a new non fluorescent nano treatment agent for drilling fluid[J]. Drilling Fluid & Completion Fluid, 2014, 31(6):13-16.
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