| Citation: |
MA Jihe, GENG Tie, SONG Xiaowei, et al. Drilling fluid technology for ultra-deep extended reach wells in Enping 21−4 Oilfield, Eastern South China Sea [J]. Petroleum Drilling Techniques, 2025, 53(2)：21−29. DOI: 10.11911/syztjs.2025025
|
Enping 21−4 in the Eastern South China Sea is a typical marginal oilfield. Certain risks and challenges are faced while drilling of ultra-deep extended reach wells in this oilfield, such as difficult hole cleaning, low pressure bearing capacity of unconsolidated sandstone, multiple faults encountered while drilling, large drag and torque, and restrictions during casing running, etc. In order to solve the drilling problems in this oilfield, BIODRILLS synthetic base drilling fluid was selected and optimized. The optimal synthetic base fluid, filtrate reducer, flow pattern regulator, and lubricant were determined, and the emulsifier dosage was optimized. The formula of BIODRILLS synthetic base drilling fluid was adjusted. The laboratory performance evaluation results show that the formula can maintain good and stable rheological properties, higher low shear rate, strong inhibition, plugging property, anti-pollution property, and excellent lubrication performance, with high temperature and high pressure filtration loss of 2.4 mL and extreme pressure lubrication coefficient of 0.03–0.06, and meet the requirements of ultra-deep long extended reach well drilling in Enping 21−4 Oilfield. The BIODRILLS synthetic base drilling fluid prepared according to the formula has been applied in the ultra-deep extended reach wells A1H and EP−X in the eastern South China Sea. The application shows that the system has stable performance, good cutting carrying capacity, and excellent lubrication performance. The drag coefficient during drilling ϕ 311.1 mm hole is 0.17–0.21, and the open hole drag coefficient is 0.40–0.45 when running ϕ244.5 mm casing. The drilling fluid has not only effectively solved the drilling problem of ultra-deep extended reach wells in the eastern South China Sea but also provided technical means for the drilling of 10 000-meter long extended reach wells in this sea area.
| [1] |
汪海阁,黄洪春,毕文欣,等. 深井超深井油气钻井技术进展与展望[J]. 天然气工业,2021,41(8):163–177.
WANG Haige, HUANG Hongchun, BI Wenxin, et al. Deep and ultra-deep oil/gas well drilling technologies: Progress and prospect[J]. Natural Gas Industry, 2021, 41(8): 163–177.
|
| [2] |
陈宗琦,刘湘华,白彬珍,等. 顺北油气田特深井钻井完井技术进展与发展思考[J]. 石油钻探技术,2022,50(4):1–10.
CHEN Zongqi, LIU Xianghua, BAI Binzhen, et al. Technical progress and development consideration of drilling and completion engineering for ultra-deep wells in the Shunbei Oil & Gas Field[J]. Petroleum Drilling Techniques, 2022, 50(4): 1–10.
|
| [3] |
汪海阁,黄洪春,纪国栋,等. 中国石油深井、超深井和水平井钻完井技术进展与挑战[J]. 中国石油勘探,2023,28(3):1–11.
WANG Haige, HUANG Hongchun, JI Guodong, et al. Progress and challenges of drilling and completion technologies for deep, ultra-deep and horizontal wells of CNPC[J]. China Petroleum Exploration, 2023, 28(3): 1–11.
|
| [4] |
苏义脑,路保平,刘岩生,等. 中国陆上深井超深井钻完井技术现状及攻关建议[J]. 石油钻采工艺,2020,42(5):527–542.
SU Yinao, LU Baoping, LIU Yansheng, et al. Status and research suggestions on the drilling and completion technologies for onshore deep and ultra deep wells in China[J]. Oil Drilling & Production Technology, 2020, 42(5): 527–542.
|
| [5] |
谢彬强,邱正松,黄维安,等. 大位移井钻井液关键技术问题[J]. 钻井液与完井液,2012,29(2):76–82.
XIE Binqiang, QIU Zhengsong, HUANG Weian, et al. Summary on key technical issues of drilling fluid for extended reach well[J]. Drilling Fluid & Completion Fluid, 2012, 29(2): 76–82.
|
| [6] |
蔡利山,林永学,王文立. 大位移井钻井液技术综述[J]. 钻井液与完井液,2010,27(3):1–13.
CAI Lishan, LIN Yongxue, WANG Wenli. Review of the drilling fluids for extended reach well[J]. Drilling Fluid & Completion Fluid, 2010, 27(3): 1–13.
|
| [7] |
万绪新,张海青,沈丽,等. 合成基钻井液技术研究与应用[J]. 钻井液与完井液,2014,31(4):26–29.
WAN Xuxin, ZHANG Haiqing, SHEN Li, et al. Study and application of synthetic base drilling fluid technology[J]. Drilling Fluid & Completion Fluid, 2014, 31(4): 26–29.
|
| [8] |
史赫,蒋官澄,王国帅,等. 恒流变合成基钻井液关键机理研究[J]. 钻井液与完井液,2020,37(1):31–37.
SHI He, JIANG Guancheng, WANG Guoshuai, et al. Study on key mechanisms of constant rheology synthetic base drilling fluids[J]. Drilling Fluid & Completion Fluid, 2020, 37(1): 31–37.
|
| [9] |
蒋官澄,黄胜铭,侯博,等. 增效型无土相仿生油基钻井液技术的研究与应用[J]. 钻采工艺,2024,47(2):93–103.
JIANG Guancheng, HUANG Shengming, HOU Bo, et al. Research and application of enhanced soil-free phase bionic oil-based drilling fluid technology[J]. Drilling & Production Technology, 2024, 47(2): 93–103.
|
| [10] |
赵春花,罗健生,夏小春,等. 高性能合成基钻井液体系的研制及性能研究[J]. 钻井液与完井液,2018,35(3):25–31.
ZHAO Chunhua, LUO Jiansheng, XIA Xiaochun, et al. Development of and study on a high performance synthetic base drilling fluid[J]. Drilling Fluid & Completion Fluid, 2018, 35(3): 25–31.
|
| [11] |
罗健生,刘刚,李超,等. 深水FLAT-PRO合成基钻井液体系研究及应用[J]. 中国海上油气,2017,29(3):61–66.
LUO Jiansheng, LIU Gang, LI Chao, et al. Research and application of FLAT-PRO synthetic based drilling fluid system in deep water[J]. China Offshore Oil and Gas, 2017, 29(3): 61–66.
|
| [12] |
耿铁. 深水恒流变合成基钻井液技术研究[D]. 青岛:中国石油大学(华东),2019.
GENG Tie. Study on flat-rheology synthetic-based drilling fluid for deepwater drilling[D]. Qingdao: China University of Petroleum(East China), 2019.
|
| [13] |
马磊,袁学强,张万栋,等. 乌石17-2油田强封堵合成基钻井液体系[J]. 钻井液与完井液,2022,39(5):558–564.
MA Lei, YUAN Xueqiang, ZHANG Wandong, et al. A synthetic based drilling fluid with strong plugging capacity for Block Wushi 17-2[J]. Drilling Fluid & Completion Fluid, 2022, 39(5): 558–564.
|
| [14] |
彭三兵,李斌,韩东东,等. BIODRILL S合成基钻井液在垦利区块首次应用[J]. 钻井液与完井液,2024,41(1):60–67.
PENG Sanbing, LI Bin, HAN Dongdong, et al. First application of the synthetic-based drilling fluid BIODRILL S in Block Kenli of Bohai Oilfield[J]. Drilling Fluid & Completion Fluid, 2024, 41(1): 60–67.
|
| [15] |
赵景芳,刘雪婧,耿铁. BIO-OIL环保基液的研制与现场试验[J]. 石油钻探技术,2019,47(3):75–81.
ZHAO Jingfang, LIU Xuejing, GENG Tie. Development and field test of a BIO-OIL environmental protection base fluid for synthetics-based drilling fluids[J]. Petroleum Drilling Techniques, 2019, 47(3): 75–81.
|
| [16] |
罗健生,莫成孝,刘自明,等. 气制油合成基钻井液研究与应用[J]. 钻井液与完井液,2009,26(2):7–11.
LUO Jiansheng, MO Chengxiao, LIU Ziming, et al. The study and application of a GTL based drilling fluid[J]. Drilling Fluid & Completion Fluid, 2009, 26(2): 7–11.
|
| [17] |
周定照,邢希金,蒋世全,等. 一种深水合成基钻井流体流变稳定剂的研发[J]. 石油钻采工艺,2015,37(1):83–86.
ZHOU Dingzhao, XING Xijin, JIANG Shiquan, et al. Research and development of rheological stabilizer with deepwater synthetic base used indrilling fluid[J]. Oil Drilling & Production Technology, 2015, 37(1): 83–86.
|
| [18] |
李超,罗健生,刘刚,等. FLAT-PRO深水合成基钻井液恒流变作用机理研究[J]. 广东化工,2021,48(4):242–243.
LI Chao, LUO Jiansheng, LIU Gang, et al. Study on the flat-rheological mechanism of FLAT-PRO flat-rheology synthetic-based drilling fluid system in deepwater[J]. Guangdong Chemical Industry, 2021, 48(4): 242–243.
|
| [19] |
陈一鸣,谢明英,闫正和,等. 珠江口盆地恩平凹陷海相高泥质砂岩储层特征及主控因素[J]. 石油地质与工程,2022,36(1):14–19.
CHEN Yiming, XIE Mingying, YAN Zhenghe, et al. Reservoir characteristics and main controlling factors of marine high argillaceous sandstone in Enping sag of Pearl River Mouth basin[J]. Petroleum Geology and Engineering, 2022, 36(1): 14–19.
|
| [20] |
李晶晶,马积贺. 浅层大位移井表层钻井的关键技术与应用[J]. 化工管理,2024(5):87–90.
LI Jingjing, MA Jihe. Key technologies and applications of surface drilling in shallow extended reach wells[J]. Chemical Enterprise Management, 2024(5): 87–90.
|
| [1] | ZHANG Junbin, YANG Zhidi, QIN Shili, CAO Bobo, WANG Zhiwei, ZHANG Yongtao. Single-Tank Dual-Electric Submersible Pump Technology in Offshore Extended Reach Wells[J]. Petroleum Drilling Techniques, 2025, 53(2): 46-51. DOI: 10.11911/syztjs.2025028 |
| [2] | QIN Jianyu, LI Bo, RAO Zhihua, JIN Yong, ZHANG Yong, LIU Yongfeng. Key Cementing Technologies for an Ultra-Deep Extended Reach Well in Enping 21–4 Oilfield, Eastern South China Sea[J]. Petroleum Drilling Techniques, 2025, 53(2): 30-37. DOI: 10.11911/syztjs.2025026 |
| [3] | GUO Yongbin, ZUO Kun, DENG Chenghui, LI Jingjing, ZHANG Kai, LEI Hong. Key Drilling Technologies for Ultra-Deep Extended Reach Horizontal Well in Enping 21−4 Oilfield, Eastern South China Sea[J]. Petroleum Drilling Techniques, 2025, 53(2): 11-20. DOI: 10.11911/syztjs.2025021 |
| [4] | YANG Kunpeng, LI Pengxiao, AO Kangwei, ZHANG Tianyi, XIA Yuanbo, HOU Wei. Ultra-Low Density and Low-Friction Cement Slurry Cementing Technologies in Long Sealing Sections of Fuman Oilfield[J]. Petroleum Drilling Techniques, 2023, 51(6): 64-70. DOI: 10.11911/syztjs.2023060 |
| [5] | LI Yan, HU Zhiqiang, XUE Yuzhi, LIANG Wenlong, TANG Wenquan, NIU Chengcheng. Key Drilling Technologies of Well Bin 4 under the Daily Rate System Management Mode[J]. Petroleum Drilling Techniques, 2022, 50(3): 34-38. DOI: 10.11911/syztjs.2021133 |
| [6] | WANG Bo, WANG Xu, XING Zhiqian, YUAN Zongling, LI Shijie. Drilling and Completion Technologies of Extended-Reach Wells in the Artificial Island of the Jidong Oilfield[J]. Petroleum Drilling Techniques, 2018, 46(4): 42-46. DOI: 10.11911/syztjs.2018118 |
| [7] | LIAN Zhanghua, LIU Yang, LIN Tiejun, LUO Zeli, MOU Yisheng. Fracture Analysis of 4(2)/1 REG Turbine Shaft Connection Thread under Complex Working Conditions[J]. Petroleum Drilling Techniques, 2018, 46(3): 53-58. DOI: 10.11911/syztjs.2018051 |
| [8] | LI Dianwei, YANG Zhongfu, DI Baiying, CHEN Shaoyun, WANG Jianyan. Drag and Torque Reducing Techniques on S-Shaped Directional Wells of the Rumaila Oilfield[J]. Petroleum Drilling Techniques, 2016, 44(5): 22-27. DOI: 10.11911/syztjs.201605004 |
| [9] | Su Feng, Zhang Weiguo, Li Zemin, Chang Yuanjiang, Chen Guoming. Application of Underwater GPS Positioning Technique in Wellhead Positioning of Liuhua 4-1 Oilfield[J]. Petroleum Drilling Techniques, 2013, 41(3): 40-45. DOI: 10.3969/j.issn.1001-0890.2013.03.008 |
| [10] | Zhang Yu, Zhang Guo, Xu Jiang, Gao Wei, Liu Guichuan. Application of Novel Polyamine Drilling Fluid in Mudstone Section of Well DuH 4[J]. Petroleum Drilling Techniques, 2012, 40(6): 33-37. DOI: 10.3969/j.issn.1001-0890.2012.06.007 |
| 1. |
韩玉娇. 随钻方位成像测井数据压缩与还原方法. 西安石油大学学报(自然科学版). 2024(06): 95-99+139 .
| |
| 2. |
王港，秦臻，苏可嘉，胡雪琴，魏康健，邓呈祥. 非平行界面地层水平井自然伽马测井蒙特卡罗模拟. 江西科学. 2023(03): 478-481+527 .
| |
| 3. |
肖功勋. 分析螺旋井眼的预防及测井数据校正. 中国石油和化工标准与质量. 2021(07): 7-8 .
| |
| 4. |
彭礼韬，张立国，郝琦，玉宇. MCNP与GEANT4应用于随钻方位伽马测井仪探测性能对比. 测井技术. 2021(03): 267-272 .
|
Supervisor：SINOPEC GROUP
Sponsor：Sinopec Research Institute of Petroleum Engineering
Serial Number：CN 11-1763/TE, ISSN 1001-0890
Chief Editor： WANG Minsheng
Supported by: Beijing Renhe Information Technology Co., Ltd. 
Copyright © 2009《Petroleum Drilling Techniques 》 All Rights Reserved.
DownLoad: