松科2井抗超高温钻井液技术

许洁; 乌效鸣; 王稳石; 闫家; 张恒春; 曹龙龙

doi:10.3969/j.issn.1001-5620.2018.02.004

松科2井抗超高温钻井液技术

doi: 10.3969/j.issn.1001-5620.2018.02.004

1. 中国地质科学院勘探技术研究所, 河北廊坊 065000;
2. 中国地质大学(武汉)工程学院, 武汉 430074

详细信息

作者简介:
许洁,工程师,博士,毕业于中国地质大学(武汉)地质工程专业,现在主要从事钻井液技术研究与应用工作。电话18330670628;E-mail:xujie561@126.com。

中图分类号: TE254.3
计量
- 文章访问数: 504
- HTML全文浏览量: 149
- PDF下载量: 322
- 被引次数: 0
出版历程
- 收稿日期: 2017-12-30
- 刊出日期: 2018-03-30

Ultra-high Temperature Drilling Fluid Technology of Well Songke-2

1. Research Institute of Exploration Technology, China Academy of Geological Sciences, Langfang, Hebei 065000;
2. School of Engineering and Technology, China University of Geosciences, Wuhan, Hubei 430074

摘要

摘要: 松科2井是1口部署在松辽盆地的高温科学钻探深井，目的为钻穿白垩纪地层，获取基底陆相沉积记录，预测井底温度超过220℃；四、五开钻沙河子组的泥岩、砂岩混层，火石岭组破碎的凝灰岩、泥岩、煤线的混层，容易发生坍塌现象，防塌措施尤其重要。四、五开属于连续提钻取心钻进，多次起下钻及长时间的裸眼对井壁稳定提出较大挑战；不同钻进工艺具有不同的特点，对钻井液也提出挑战。针对以上难点，研制出了抗高温聚合物钻井液：1.0%钠膨润土+2%凹凸棒土+0.2% KOH+（0.5%~1%）高分子量降滤失剂+1%中分子量降滤失剂+2.5%成膜剂+（2%~4%） SMC+2% FT+3% KCl+2% NaCOOH+3%白油。四开初期对三开的井浆进行评价，结合大量的室内小型转换实验，以原井浆为基础逐步进行转换，以满足钻进要求；五开因处理事故对井浆性能调整较大，事故结束后简化钻井液处理剂种类，逐渐将性能调至稳定状态。在松科2井现场应用时，根据实际情况及时调整，该阶段钻井液高温下流变性好、高温稳定性强，室内评价其抗温能力达到240℃，热滚72 h后性能良好，为顺利完成该阶段钻探工作提供了技术支撑，对提高钻探质量、降低勘探成本起到指导作用。
- 岩心钻探 /
- 松科2井 /
- 超高温 /
- 抗高温聚合物钻井液 /
- 高温流变性 /
- 沉降稳定性 /
- 凹凸棒土
Abstract: The well Songke-2 is a high temperature deep scientific exploration well deployed in the Songliao Basin, its purpose is to penetrate the Cretaceous formations to obtain the records of basal continental deposit. The bottom hole temperature has been predicted to be over 220℃. Measures for preventing borehole wall collapse are especially important in drilling the fourth and fifth intervals since borehole wall collapse has occurred previously in drilling the interbedded mudstone and sandstone in the Shahezi formation, and the broken tuff, mudstone and coal seam in the Huoshiling formation, which were to be penetrated by the fourth and fifth intervals of the well. Continuous coring was to be conducted in the fourth and fifth intervals, and frequent tripping of drill string gave a big challenge to borehole wall stabilization because of long time contact of the open hole with drilling fluid. The adoption of different drilling techniques in turn gave a challenge to drilling fluid. A high temperature polymer drilling fluid has been formulated to deal with these challenges. The composition of the drilling fluid is as follows:1.0% bentonite + 2% attapulgite +0.2%KOH +(0.5%-1.0%) high MW filter loss reducer +1% moderate MW filter loss reducer + 2.5% filming agent + (2%-4%)SMC +2%FT +3%KCl + 2%NaCOOH +3% white oil. At the beginning of the fourth interval, the mud left over from the third interval was evaluated and converted for re-use in the fourth interval based on large amount of pilot tests. In the fifth interval, the property of the mud was greatly modified because of the needs for dealing with downhole troubles. When the downhole troubles were resolved, the mud property was gradually adjusted to a stable state. In field application the mud property was adjusted at all times in accordance with the requirements of drilling operations. The mud had good rheology at high temperatures and good high temperature stability. High temperature resistance of the mud formulation was 240℃ based on laboratory test. The mud property was still satisfactory even after hot rolling for 72℃, providing strong technical support for the success of drilling operation. The drilling fluid technology used in drilling the well Songke-2 is of guiding significance in improving job quality of drilling and reducing exploration cost.
- Core drilling /
- Well Songke-2 /
- Ultra-high temperature /
- High temperature polymer drilling fluid /
- High temperature rheology /
- Settlement stability /
- Attapulgite

HTML全文

参考文献(13)

[1]	王关清, 陈元顿, 周煜辉. 深探井和超深探井钻井的难点分析和对策探讨[J]. 石油钻采工艺,1998, 20(1):1-5. WANG Guanqing, CHEN Yuandun, ZHOU Yuhui. Difficulty-analysis and solution discussion for deep and ultra-deep exploration well[J]. Oil Drilling&Production Technology,1998, 20(1):1-5.
[2]	万绪新, 刘绍元, 王树强. 耐温耐盐深井钻井液技术[J]. 钻井液与完井液, 2002, 19(6):59-61. WAN Xuxin, LIU Shaoyuan, WANG Shuqiang. Temperature tolerant and salt resistant drilling fluid for deep hole drilling[J]. Drilling Fluid & Completion Fluid, 2002, 19(6):59-61.
[3]	郑文龙,乌效鸣,朱永宜,等. 松科2井特殊钻进工艺下钻井液技术[J] 石油钻采工艺,2015,37(3):32-35. ZHENG Wenlong,WU Xiaoming,ZHU Yongyi,et al. Drilling fluid technique for special drilling technology in SK-2 well[J].Oil Drilling & Production Technology, 2015,37(3):32-35.
[4]	TEHRANI M A, POPPLESTONE A, GUARNERI A, et al. Water-based drilling fluid for HT/HP applications[C]//International Symposium on oilfield chemistry. Society of Petroleum Engineers, 2007.
[5]	赵金州,张善文,张桂林,等. 中国东部复杂超深井钻井实践——胜科1井钻井的重大突破[M]. 中国石化出版社,2008:106-130. ZHAO Jinzhou, ZHANG Shanwen, ZHANG Guilin, et al. Practice of complex and ultra-deep well drilling in eastern China:major breakthrough of drilling project for Well Shengke-1[M]. China Petrochemical Press Co.Ltd, 2008 :106-130.
[6]	李公让,薛玉志,刘宝峰,等. 胜科1井四开超高温高密度钻井液技术[J]. 钻井液与完井液, 2009,26(2):12-15. LI Gongrang, XUE Yuzhi, LIU Baofeng, et al. High temperature high density drilling fluid technology for the forth interval of well Shengke-1[J]. Drilling Fluid & Completion Fluid,2009, 26(2):12-15.
[7]	赵秀全,李伟平,王中义. 长深5井抗高温钻井液技术[J]. 石油钻探技术,2007,35(6):69-72. ZHAO Xiuquan, LI Weiping, WANG Zhongyi. Hightemperature drilling fluids in Changshen-5 well[J]. Petroleum Drilling Techniques,2007,35(6):69-72.
[8]	孙中伟,何振奎,刘霞,等. 泌深1井超高温水基钻井液技术[J]. 钻井液与完井液, 2009, 26(3):9-11 , 15. SUN Zhongwei, HE Zhenkui, LIU Xia, et al. The ultra high temperature water base drilling fluid technology for well Bishen-1[J]. Drilling Fluid & Completion Fluid, 2009, 26(3):9-11.
[9]	王富华, 王瑞和, 刘江华, 等. 高密度水基钻井液高温高压流变性研究[J]. 石油学报,2010, 31(2):306-310. WANG Fuhua, WANG Ruihe, LIU Jianghua, et al. Rheology of high-density water-based drilling fluid at high temperature and high pressure[J]. Acta Pet Rolei Sinica, 2010, 31(2):306-310.
[10]	ALDERMAN N J, GAVIGNET A, GUILLOT D, et al. High-temperature, high-pressure rheology of water-based muds[J]. Society of Petroleum Engineers, 1988.
[11]	王兰, 马光长, 吴琦.水基钻井液高温流变特性研究[J]. 钻采工艺, 2009, 32(6):20-21 , 26. WANG Lan, MA Guangchang, WU Qi. Study on rheological behaviors of high-temperature water based drilling fluid[J]. Drilling & Production Techology, 2009, 32(6):20-21, 26.
[12]	HERZHAFT B, PEYSSON Y, ISAMBOURG P, et al. Rheological properties of drilling muds in deep offshore conditions[C]//SPE/IADC drilling conference. Society of Petroleum Engineers, 2001.
[13]	黄维安. 超深井钻井液高温稳定机理与应用研究[D]. 东营:中国石油大学,2007. HUANG Weian. Study on high-temperature stabilization mechanisms and application of ultra-deep well drilling fluid[D].