超高密度复合盐水钻井液流变性调控及应用

黄桃; 樊相生; 陶卫东; 谢刚金

doi:10.3969/j.issn.1001-5620.2020.02.004

超高密度复合盐水钻井液流变性调控及应用

doi: 10.3969/j.issn.1001-5620.2020.02.004

中原石油工程公司西南钻井分公司, 成都 611230

基金项目:

中石油安全环保技术研究院石油石化污染物控制与处理国家重点实验室2017年度开放课题“新型树状大分子衍生物的制备及其在废弃水基钻井液处理中的应用研究”（PPC2017002）

详细信息

作者简介:
黄桃,工程师,毕业于西南石油大学,现在从事钻井液技术研究工作。E-mail:htzyhsr@163.com

中图分类号: TE254
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出版历程
- 收稿日期: 2019-12-15
- 刊出日期: 2020-04-28

Rheology Control and Application of Ultra-High-Density Compound Brine Drilling Fluid

Southwest Drilling Branch of Zhongyuan Petroleum Engineering Company, Chengdu, Sichuan 611230

摘要

摘要: Lu206井是四川盆地南部泸县长宁地区油气页岩气勘查区块的一口评价井，目的层为宝塔组。该井直导眼井井深为4082 m，实际钻井过程中钻遇高压裂缝气导致所施工的最高水基钻井液密度为2.42 g/cm³，气层活跃井控风险大，必须维持钻井液具有超高密度，由于密度超高导致固相控制难度大，还因为上部泥岩地层易造浆，所以导致调控钻井液体系的流变性困难。总结区域内钻井经验，通过系统的室内实验研究，将上部聚磺钻井液体系转换成抗污染能力、抑制性强的超高密度复合盐水钻井液。该复合盐水钻井液在实践中也面临着流变性调控的难点，加强现场理论分析和小型试验，优选出了一种褐煤树脂KJ-4，将KJ-4、高密度分散剂、磺化单宁一起复配，在Lu206井直导眼井四开进行了超高密度复合盐水钻井液的试验。结果表明，该复配组合能较好地调控复合盐水流变性，控制超高密度复合盐水钻井液的黏度和切力，为该区块高密度钻井液流变性的调控提供了一种解决思路。
- 超高密度钻井液 /
- 复合盐水 /
- 流变性 /
- 抗污染
Abstract: Well Lu-206 is an appraisal well drilled in the oil/gas and shale gas exploration block in Changning, Lu County, south of Sichuan Basin. The target zone of this well is the Baota Formation. The vertical pilot hole of this well is 4082 m in depth. During drilling operation, high pressure fracture gas was encountered, caused the hole to overflow, and the well was finally killed with a high density (2.42 g/cm³) water base mud. To control the formations wit active gas, ultra-high density had to be used, this in turn resulted in difficulties in solids control of the drilling fluids. Furthermore, the top formations are very water sensitive, making control of mud rheology is very difficult. Based on the past drilling experiences gained and comprehensive laboratory experiment, the sulfonate polymer drilling fluid previously used to drill the top section of the well was replaced with an ultra-high-density compound brine drilling fluid with excellent contamination resistance and inhibitive capacity. A lignite resin KJ-4, a high-density dispersant and a sulfonated tannin were mixed together to control the rheology of the compound brine drilling fluid, which was also a problem needed to be resolved. Application of this ultra-high-density compound brine drilling fluid in drilling the fourth interval of the vertical pilot hole of the well Lu-206 showed that the rheology of the drilling fluid was under control during the whole drilling process. The success of the field practice has provided a clue for controlling the rheology of high-density drilling fluids.
- Ultra-high-density drilling fluid /
- Compound brine /
- Rheology /
- Contamination resistant

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参考文献(12)

[1]	白杨. 深井高温高密度水基钻井液性能控制原理研究[D]. 成都:西南石油大学, 2014. BAI Yang.Study on the performance control principle of high temperature and high density water-based drilling fluid in deep wells[D].Chengdu:Southwest Petroleum University, 2014.
[2]	廖天彬. 超高密度抗高温HDS盐水基钻井液研究[D]. 成都:西南石油大学, 2014. LIAO Tianbin. Research on ultra-high density high temperature resistant HDS brine based drilling fluid[D]. Chengdu:Southwest Petroleum University, 2014.
[3]	黄汉仁. 钻井流体工艺原理[M]. 北京:石油工业出版社, 2016. HUANG Hanren. Principles of drilling fluid process[M]. Beijing:Petroleum Industry Press, 2016.
[4]	单文军, 陶士先, 胡继良, 等. 高温盐水钻井液技术难点及国内外研究现状[J]. 地质与勘探, 2013, 49(5):976-979. SHAN Wenjun, TAO Shixian, HU Jiliang, et al. Difficulties in high temperature brine drilling fluid technology and research status at home and abroad[J]. Geology and Prospecting, 2013, 49(5):976-979.
[5]	黄桢, 赵靖影, 黄有为, 等. 川西大兴场构造高压盐水层钻井技术[J]. 钻采工艺, 2016, 39(1):1-5. HUANG Zhen, ZHAO Jingying, HUANG Youwei, et al. Drilling technology for high-pressure brine layer in Daxing field, western Sichuan[J]. Drilling & Production Technology, 2016, 39(1):1-5.
[6]	罗人文, 龙大清, 王昆, 等. 马深1井超深井钻井液技术[J]. 石油钻采工艺, 2016, 38(5):588-591. LUO Renwen, LONG Daqing, WANG Kun, et al. Drilling fluid technology of ultra deep well in Mashen 1 well[J]. Oil Drilling & Production Technology, 2016, 38(5):588-591.
[7]	骆小虎. 抗高温高密度钻井液在印尼LOFIN-2井的研究与应用[J]. 钻井液与完井液, 2019, 36(1):60-64. LUO Xiaohu. Research and application of high temperature and high density drilling fluid in LOFIN-2 well in Indonesia[J]. Drilling Fluid & Completion Fluid, 2019, 36(1):60-64.
[8]	张喜凤. 适用于塔里木油田克拉区块高密度钻井液的配制[J]. 西安石油大学学报(自然科学版), 2005, 20(4):55-63. ZHANG Xifeng. Preparation for high-density drilling fluid in the Kara formation of Tarim oilfield[J].Journal of Xi'an Shiyou University(Natural Science Edition), 2005, 20(4):55-63.
[9]	张斌. 克拉4井超高密度钻井液现场应用技术[J]. 钻井液与完井液, 2005, 22(4):59-63. ZHANG Bin.Field application technology of ultra high density drilling fluid in well Cla 4[J].Drilling Fluid & Completion Fluid, 2005, 22(4):59-63.
[10]	胡德云. 超高密度(ρ>3.00 g/cm³)钻井液的研究与应用[J]. 钻井液与完井液, 2004, 21(1):6-9. HU Deyun.Research and application of ultra high density(ρ>3.00 g/cm³)drilling fluid[J].Drilling Fluid & Completion Fluid, 2004, 21(1):6-9.
[11]	张东海, 马洪会. 超高密度钻井液在官7井的应用[J]. 南方油气, 2006, 19(1):45-51. ZHANG Donghai, MA Honghui.Application of ultrahigh density drilling fluid in Guan 7 well[J].South China Oil & Gas, 2006, 19(1):45-51.
[12]	周进. 却勒构造高密度欠饱和盐水钻井液技术[J]. 钻井液与完井液, 2003, 20(5):38-40. ZHOU Jin.The construction of high-density undersaturated brine drilling fluid technology[J].Drilling Fluid & Completion Fluid, 2003, 20(5):38-40.