Study and Application of Temperature-responsive Blockage Removal Agent in Oilfield
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摘要: 采用高温灼烧法和X射线衍射仪对堵塞物成分进行了分析测试，针对堵塞物特征采用聚乙二醇、氨基磺酸和十二酰氯作为反应单体，制备了温度响应型油田解堵剂（MSA），并对MSA解堵剂的综合性能进行了评价。结果表明：堵塞物以方解石（CaCO3）为主；解堵剂在20 ℃下pH值为6.05，在60 ℃下pH值为0.99，表明解堵剂在60 ℃下可以分解出大量的氨基磺酸，从而溶蚀堵塞物达到解堵目的。在60 ℃下作用30 min后，解堵剂对4种堵塞物的解堵率均可以达到82%以上，且在90 ℃时解堵剂中各成分活性依然较高，拥有较好的解堵能力和与地层水的配伍性。现场应用结果表明，试验井投产满6个月后，累计增油66.9 t。Abstract: A pore throat blockage sample was tested and analyzed for its composition with high temperature calcination method and X-ray diffraction method. Based on the results of the test and analysis, a temperature-responsive reservoir blockage removing agent MSA is developed with polyethylene glycol, sulfamic acid and lauroyl chloride. The general performance of MSA was evaluated by laboratory experiment. The reservoir blockage used in the experiment is mainly composed of calcite (CaCO3). MSA has a pH of 6.05 at 20 °C and 0.99 at 60 °C, this means that MSA decomposes at 60 °C and produces a large amount of sulfamic acid with which the blockage can be dissolved. More than 82% of the blockage can be dissolved after 30 min of interaction between the blockage and MSA, and at 90 °C, each component of MSA still retains high activity, meaning that MSA has good blockage removing capacity and compatibility with the formation waters. Field application of MSA showed that a production well treated with MSA had oil production increased by 66.9 t in 6 months.
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Key words:
- Temperature response type /
- Calcium carbonate /
- Blockage remover
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表 1 堵塞物样品中有机组分和无机组分含量
堵塞物 灼烧前/g 灼烧后/g 有机组分/% 无机组分/% B1 1.12 0.95 15.18 84.82 B2 1.28 1.01 21.09 78.91 B3 1.02 0.88 13.73 86.27 B4 1.03 0.92 10.68 89.32 
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表 3 MSA解堵剂的缓蚀性能评价
T/℃ m1/g m2/g ∆m/g 腐蚀速率/(g/(m2·h)) 20 1.2669 1.2666 0.0003 0.0625 30 1.2675 1.2672 0.0003 0.0625 40 1.2689 1.2685 0.0004 0.0833 50 1.2673 1.1109 0.1564 32.5872 60 1.2695 0.8495 0.4200 87.5000
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[1] KANG W L, WANG T Y, ZHANG H W, et al. A dynamic scale location monitor method to predict oilfield blockage during water flooding[J]. Journal of Petroleum Science and Engineering, 2020, 191:107168. doi: 10.1016/j.petrol.2020.107168 [2] SHAKKTHIVEL P, SATHIYAMOORTHI R, VASUDEVAN T. Development of acrylonitrile copolymers for scale control in cooling water systems[J]. Desalination, 2004, 164(2):113-123. [3] 秦冰,赵琳,江建林. 原油沥青质沉积抑制及解堵技术研究进展[J]. 石油炼制与化工,2020,51(10):9.QIN Bing, ZHAO Lin, JIANG Jianlin. Research progress of crude oil asphaltene deposition inhibition and plugging removal technology[J]. Petroleum Refining and Chemical Engineering, 2020, 51(10):9. [4] ZHU T Y, YANG H B, JIANG H Z, et al. Study on an emulsion-type blockage removal agent for heavy oil recovery enhanced by polymer[J]. Journal of Industrial and Engineering Chemistry, 2020, 89:273-279. doi: 10.1016/j.jiec.2020.05.023 [5] 李凤. 稠油油田注聚井解堵方法研究[D]. 西南石油大学, 2017.LI Feng. Study on plugging removal method of polymer injection well in heavy oil field[D]. Southwest petroleum university, 2017. [6] 张耀刚,吴新民,梁铭,等. 气井井筒有机解堵工艺技术的应用[J]. 天然气工业,2009,29(2):95-97. doi: 10.3787/j.issn.1000-0976.2009.02.027ZHANG Yaogang, WU Xinmin, LIANG Ming, et al. Application of organic plugging removal technology in gas wells[J]. Natural Gas Industry, 2009, 29(2):95-97. doi: 10.3787/j.issn.1000-0976.2009.02.027 [7] 张明,刘光泽,程飞,等. SZ36-1油田稠油储层解堵酸化技术研究[J]. 非常规油气,2017,4(2):85-90. doi: 10.3969/j.issn.2095-8471.2017.02.013ZHANG Ming, LIU Guangze, CHENG Fei, et al. Study on blocking removal and acidizing technology of heavy oil reservoir in SZ36-1 oilfield[J]. Unconventional Petroleum, 2017, 4(2):85-90. doi: 10.3969/j.issn.2095-8471.2017.02.013 [8] 秦国治,王顺. 固体清洗剂及其应用[J]. 化学清洗,1998,14(4):33-40.QIN Guozhi, WANG Shun. Solid cleaning agent and its application[J]. Chemical Cleaning, 1998, 14(4):33-40. [9] 李丹平,贺波,孙世轩,等. 煤层气区块管柱结垢原因及固体酸除垢研究[J]. 石油管材与仪器,2021,7(6):67-73. doi: 10.19459/j.cnki.61-1500/te.2021.06.011LI Danping, HE Bo, SUN Shixuan, et al. Study on scaling causes of coalbed methane tubing and solid acid scaling[J]. Petroleum Pipes and Instruments, 2021, 7(6):67-73. doi: 10.19459/j.cnki.61-1500/te.2021.06.011 [10] 贾海民. 哈拉哈塘油田井筒堵塞机理及解堵防堵研究[D]. 中国石油大学(华东), 2018.JIA Haimin. Study on wellbore plugging mechanism and plugging removal and prevention in Halatang oilfield[D]. China University of Petroleum (East China), 2018. [11] SHABANI A, KALANTARIASL A, PARVAZDAVANI M, et al. Geochemical and hydrodynamic modelling of permeability impairment due to composite scale formation in porous media[J]. Journal of Petroleum Science and Engineering, 2019, 176:1071-1081. doi: 10.1016/j.petrol.2019.01.088 [12] WANG F, YANG H B, JIANG H Z, et al. Formation mechanism and location distribution of blockage during polymer flooding[J]. Journal of Petroleum Science and Engineering, 2020, 194:107503. doi: 10.1016/j.petrol.2020.107503 [13] PIPER A. A graphic procedure in the geochemical interpretation of water-analyses[J]. Eos Transactions American Geophysical Union, 1944, 25:914-923.3. doi: 10.1029/TR025i006p00914 -
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