Research on High Temperature Resistance and High-Density Clay-Free Diesel Oil-Based Drilling Fluid
-
摘要: 针对常规高密度油基钻井液不利于提高机械钻速且流变性难以控制的缺点，通过分子结构设计，合成了抗高温乳化剂HT-MUL和提切剂ZNTQ-I，并配制了抗高温高密度无土相柴油基钻井液。通过电稳定性试验和高温老化试验，评价了乳化剂、提切剂的单剂效果，并对研发的无土相油基钻井液进行了抗温性、稳定性、抗污染能力和抑制性试验。试验结果发现：HT-MUL乳化剂具有较高的破乳电压，抗温达220℃；提切剂加量为0.5%时提切效果显著；在150~220℃条件下，2.50 kg/L无土相油基钻井液破乳电压在2 000 V左右，可抗质量分数25%蒸馏水的污染和质量分数15% CaCl2溶液的污染。研究结果表明，抗高温高密度无土相柴油基钻井液的密度可达2.50 kg/L，抗温达220℃，具有良好的稳定性、悬浮性和抗污染能力，能够满足提高钻速和保护油气层的要求。Abstract: Conventional high-density oil based drilling fluids are not effective in enhancing ROP. Further, their rheological properties cannot be controlled easily. By means of creating a new molecular structural design, the high temperature resistant emulsifier, HT-MUL, and the rheology modifier, ZNTQ-I, were developed. In addition, the high temperature resistant high-density clay-free diesel oil based drilling fluid was prepared. Performances of the emulsifier and rheology modifier were individually evaluated through electric stability tests and aging tests under high temperature. The clay-free diesel oil-based drilling fluid developed was tested for its temperature resistance, stability, anti-pollution and inhibitive properties. Test results demonstrate that HT-MUL has a high emulsion-breaking voltage and temperature resistance up to 220 degrees, and a clear rheological increase is obtained for ZNTQ-I when its concentration is 0.5%. In addition, the newly-developed drilling fluid possesses an emulsion-breaking voltage of approximately 2 000 V with allowable tolerance to pollution of distilled water with mass fraction of 25% and pollution of CaCl2 solution with mass fraction of 15% under 2.50 kg/L and at the temperature of 150-220 degrees. Results indicate that the newly developed drilling fluid has a density up to 2.50 kg/L and temperature resistance to 220 degrees. With satisfactory stability, suspension capacities and anti-pollution capabilities, the drilling fluids can help to enhance ROP and protect pay zones.
-
Keywords:
- emulsifier /
- rheology modifier /
- high temperature resistance /
- high-density /
- clay-free /
- oil-based drilling fluid
-
-
[1] 王中华.国内外油基钻井液研究与应用进展[J].断块油气田,2011,18(4):533-537. WANG Zhonghua.Research and application progress of oil-based drilling fluid at home and abroad[J].Fault-Block Oil Gas Field,2011,18(4):533-537. [2] 冯萍,邱正松,曹杰,等.国外油基钻井液提切剂的研究与应用进展[J].钻井液与完井液,2012,29(5):84-88. FENG Ping,QIU Zhengsong,CAO Jie,et al.Progress on study and application on rheology modifier for oil-based mud aboard[J].Drilling Fluid Completion Fluid,2012,29(5):84-88. [3] 张跃,张博,吴正良,等.高密度油基钻井液在超深复杂探井中的应用[J].钻采工艺,2013,36(6):95-97. ZHANG Yue,ZHANG Bo,WU Zhengliang,et al.Application of high density oil-base drilling fluid in Keshen Well 7 of Tarim Oilfield[J].Drilling Production Technology,2013,36(6):95-97. [4] CARBAJAL 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-micron weight material[R].SPE 119378,2009.
[5] 吕开河,杨鹏,李建成,等.抗高温无黏土相钻井液体系研究与性能评价[J].石油钻探技术,2012,40(5):30-34. LYU Kaihe,YANG Peng,LI Jiancheng,et al.Research and evaluation of clay-free drilling fluids with high temperature resistance[J].Petroleum Drilling Techniques,2012,40(5):30-34. [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] 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. [8] 林永学,王显光.中国石化页岩气油基钻井液技术进展与思考[J].石油钻探技术,2014,42(4):7-13. LIN Yongxue,WANG Xianguang.Development and reflection of oil-based drilling fluid technology for shale gas of Sinopec[J].Petroleum Drilling Techniques,2014,42(4):7-13. [9] 刘进京,李彦琴,刘军彪,等.抗高温高密度环保低毒油包水钻井液的研究[J].钻井液与完井液,2009,26(2):46-48. LIU Jinjing,LI Yanqin,LIU Junbiao,et al.The study on environmentally friendly high temperature high density water-in-oil drilling fluid[J].Drilling Fluid Completion Fluid,2009,26(2):46-48. [10] 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 in horizontal wells with unconventional oil-gas reservoir[J].Drilling Fluid Completion Fluid,2013,30(2):1-5. -
期刊类型引用(4)
1. 谭天宇，李浩，李宗源，蒋海涛，何景朝. 煤层气多分支水平井分支井眼重入筛管完井技术. 石油钻探技术. 2020(04): 78-82 . 
本站查看
2. 李军，李玉梅，张德龙，杨宏伟，孙世斌. 页岩气井分段压裂套损影响因素分析. 断块油气田. 2017(03): 387-390 . 百度学术
3. 喻鹏，钟炳成，乔豁通，张洋. 煤层气井多次铺砂压裂工艺. 石油钻采工艺. 2017(03): 356-361 . 百度学术
4. 刘小磊，吴财芳，秦勇，杨兆彪，李勇. 我国煤层气开发技术适应性及趋势分析. 煤炭科学技术. 2016(10): 58-64 . 百度学术
其他类型引用(2)
计量
- 文章访问数: 8895
- HTML全文浏览量: 98
- PDF下载量: 14438
- 被引次数: 6
下载:
