The Development and Application of a Clay-Free Oil-Based Drilling Fluid
-
摘要: 针对常规有土相油基钻井液因有机土及沥青降滤失剂等黏度效应较大、不利于流变性控制和低密度白油油基钻井液适用范围窄的问题，以自主研发的增黏提切剂、乳化剂和聚合物降滤失剂为基础，通室内试验考察了其配伍性并优选了其加量，形成了无土相油基钻井液。室内试验结果表明，无土相油基钻井液在油水比为70：30~100：0、温度为80~160℃、密度为0.9~2.2 kg/L时，塑性黏度可控制在55 mPa·s以内、破乳电压在450 V以上，API滤失量小于2 mL，抗钻屑污染达30%，抗水污染达20%，加重材料对润滑性能影响非常小。焦石坝区块4口页岩气水平井的现场试验表明，无土相油基钻井液原材料少，维护处理简单，流变性易于控制，固相含量低，具有良好的剪切稀释性，有利于降低循环压耗，提高机械钻速。Abstract: Conventional oil-based drilling fluids are characterized by their significant viscosity effects due to the content of organic clay and asphalt filtration loss controller. So it is difficult to control their rheological properties and the limited low-density oil-based drilling fluids application. Under such circumstances, a clay-free oil-based drilling fluid has been developed by using an independently developed viocosifier, strength-enhancing additives, an emulsifier and polymer filtration loss reducer. Compatibility and optimal volumes of such additives have been determined through experimental study. Research results show that the newly developed clay-free oil-based drilling fluid may have controlled plastic viscosity within 55 mPa·s, an emulsion-breaking voltage above 450 V,an API filtration losses less than 2 mL, cutting pollution resistance up to 30% and water pollution resistance up to 20% under oil/water ratios 70:30 to 100:0, temperature 80-160℃ and densities 0.9-2.2 kg/L. At the same time, the impact of weighting materials on lubrication performance are negligible. The newly developed drilling fluids have been applied in four horizontal shale gas wells in Jiaoshiba Block. Test results show that the innovative clay-free oil-based drilling fluids involve minor raw materials, simplified maintenance requirement, controllable rheological properties and low solid contents. With desirable shear thinning behaviors, the drilling fluid may effectively minimize circulation pressure losses and enhance ROP.
-
-
[1] TAUGBØL K,LILLEDAL L,HENNING J,et al.The completion of subsea production wells eased by the use of a unique,high-density,solids-free,oil based completion fluid[R].SPE 87126,2004.
[2] BURROWS K,CARBAJAL D,KIRSNER J,et al.Benchmark performance:zero barite sag and significantly reduced downhole osers with the industry’s first clay-free synthetic-based fluid[R].SPE 87138,2004.
[3] CARBAJA D L,BURRESS C N,SHUMWAY W,et al.Combining proven anti-sag technologies for HPHT North Sea applications:clay-free oil-based fluid and synthetic,sub-mircon weight material[R].SPE 119378,2009.
[4] ARAGO A F L,QUINTERO L,MARTINS A L,et al.A novel approach for drilling and gravel packing horizontal wells in the presence of reactive shales using a solids-free synthetic fluid[R].SPE 102295,2006.
[5] van ZANTEN R,MILLER J J,BAKER C.Improved stability of invert emulsion fluids[R].SPE 151404,2012.
[6] 吴满祥,刘伟,牟杨琼杰,等.无土相油基钻井液的研究与应用[J].钻井液与完井液,2014,31(6):21-23. WU Manxiang,LIU Wei,MOUYANG Qiongjie,et al.Study on and application of clay-free oil base drilling fluid[J].Drilling Fluid Completion Fluid,2014,31(6):21-23. [7] 张小平,王京光,杨斌,等.低切力高密度无土相油基钻井液的研制[J].天然气工业,2014,34(9):89-92. ZHANG Xiaoping,WANG Jingguang,YANG Bin,et al.Development of a clay-free oi-based drilling fluid with a low shearing force and high density[J].Natural Gas Industry,2014,34(9):89-92. [8] 陈在君.高密度无土相油基钻井液研究及在四川页岩气水平井的应用[J].钻采工艺,2015,38(5):70-72. CHEN Zaijun.Development of high density clay-free oil-based drilling fluid and its application in Sichuan shale gas horizontal well[J].Drilling Production Technology,2015,38(5):70-72. [9] 凡帆,王京光,蔺文洁.长宁区块页岩水平井无土相油基钻井液技术[J].石油钻探技术,2016,44(5):34-39. FAN Fan,WANG Jingguang,LIN Wenjie.Clay-free oil based drilling fluid technology for shale gas horizontal wells in the Changning Block[J].Petroleum Drilling Techniques,2016,44(5):34-39. [10] 蓝强,李公让,张敬辉,等.无黏土低密度全油基钻井完井液的研究[J].钻井液与完井液,2010,27(2):6-9. LAN Qiang,LI Gongrang,ZHANG Jinghui,et al.Study on clay-free low density whole oil base drill-in fluid[J].Drilling Fluid Completion Fluid,2010,27(2):6-9. -
期刊类型引用(6)
1. 刘成峰，吴荣基，许智贤，伍中校，郑祺. 基于AR技术的现场施工自动监控系统. 自动化技术与应用. 2024(06): 166-170 . 
百度学术
2. 田立栋，刘正. 神东井下紧急撤人综合指挥指引系统的设计与应用. 陕西煤炭. 2023(05): 166-170 . 百度学术
3. 田颖，马梦娜. 矿区玻璃幕墙安全监测与预警系统设计. 能源与环保. 2022(04): 234-238+268 . 百度学术
4. 刘伟，王小鹏，王旭，张廷，白文雄，郭先敏. 井下动力学测量工具研究现状及发展建议. 石油矿场机械. 2022(03): 20-32 . 百度学术
5. 夏丽珍. VR虚拟实景煤矿矿井逃生系统设计实现. 煤炭技术. 2022(07): 175-178 . 百度学术
6. 王敏生. 沿钻柱测量技术及其发展方向. 石油钻探技术. 2022(04): 52-58 . 本站查看
其他类型引用(1)
计量
- 文章访问数: 19778
- HTML全文浏览量: 147
- PDF下载量: 15370
- 被引次数: 7
下载:
