Petroleum Reservoir Evaluation and Development >
2020 , Vol. 10 >Issue 6: 33 - 39
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2020.06.005
Gelation studies of polymeric gel system based on microcapsule initiator
Received date: 2019-06-07
Online published: 2021-01-07
In-situ polymerization gel system is one of the important measures to alleviate reservoir heterogeneity. In order to solve the problem that the gelation time of in-situ polymerization gel system is too fast, taking polyvinyl butyral（PVB） as the wall material and the mixture of ethanol and water as solvent, the delayed gelation microcapsule initiator with ammonium persulfate as the active core has been prepared by interfacial precipitation method. Meanwhile, the performance of microcapsule regulating gelation time of in-situ polymerization gel system has been studied. By mixing 0.05 % ethanol solution of PVB with aqueous solution containing ammonium persulfate and 0.6 % compound stabilizer（OP-10 and Tween 80） at a volume ratio of 7:3, microcapsule initiator with an average particle size of 0.7~1.5 μm have been prepared, and the optimal concentration of ammonium persulfate is 0.2 % ~ 0.4 %. At 40 ~ 90 ℃, the gelation time can be longer than 30 h by adjusting the concentration of microcapsule initiator. Core test result shows that the microcapsule initiator can be successfully injected into the core with an average permeability of 50×10-3 μm2, and initiate the polymerization of in-situ polymerized gel system to produce effective plugging. The in-situ polymerization systems with initiator microcapsules can be injected into reservoirs with an average permeability of 50×10-3 μm2, and initiate the polymerization of in-situ polymerization gel system to produce effective plugging. The enhanced oil recovery（EOR） result indicates that the oil recovery increases by 20.24 % after the gelation of the in-situ polymerization gel system.
Minglu SHAO , Xiangan YUE , Jie HE . Gelation studies of polymeric gel system based on microcapsule initiator[J]. Petroleum Reservoir Evaluation and Development, 2020 , 10(6) : 33 -39 . DOI: 10.13809/j.cnki.cn32-1825/te.2020.06.005
| [1] | WANG L Z, LONG Y F, BAI B J. Low temperature applicable polyelectrolyte gelator to covalently bridged partially hydrolyzed poly(acrylamide) in situ gel for fossil energy recovery[J]. Chemical Engineering Journal, 2018(334):2558-2567. |
| [2] | 张国良, 岳湘安, 董利飞, 等. 特低渗油藏水平井区深部调剖技术适应性评价及应用[J]. 科学技术与工程, 2014,14(12):185-188. |
| [2] | ZHANG G L, YUE X A, DONG L F, et al. Application and adaption evaluation of deep profile control of horizontal wells in ultra-low permeability reservoir[J]. Science Technology & Engineering, 2014,14(12):185-188. |
| [3] | HOU Y L, YUE X A. Research on a novel composite gel system for CO2 breakthrough[J]. Petroleum Science, 2010,7(2):245-250. |
| [4] | WANG L Z, LIU J P, LONG Y F. Delayed gelation kinetics of hydrogel formation by ionic nano-gel cross-linkers[J]. Journal of Materials Science, 2018,53(20):14789-14800. |
| [5] | 唐孝芬, 蔡志军, 李宇乡, 等. 地层内聚合丙烯酰胺凝胶堵水技术的改进[J]. 油田化学, 1997,14(2):131-134. |
| [5] | TANG X F, CAI Z J, LI Y X, et al. An improvement in using in-situ gelled acrylamide/methylene-bisacrylamide water shutoff agent[J]. Oilfield Chemistry, 1997,14(2):131-134. |
| [6] | 蒲万芬, 胡书宝, 陈刚, 等. XN-PP调剖堵水体系的研究及性能评价[J]. 钻井液与完井液, 1997,14(5):3-7. |
| [6] | PU W F, HU S B, CHEN G, et al. Evaluation of water shutoff system XN-PP[J]. Druing Fuild & Completion Fluid, 1997,14(5):3-7. |
| [7] | 王浩. 单液法、双液法结合堵水调剖新工艺[J]. 油田化学, 2002,19(1):33-35. |
| [7] | WANG H. A new technology combining single-and double-fluid processes for performing water plugging/profile modifying operations[J]. Oilfield Chemistry, 2002,19(1):33-35. |
| [8] | 魏发林, 刘玉章, 岳湘安, 等. 用于延缓交联的多重乳液体系的热稳定性及运移行为[J]. 石油学报, 2008,29(3):423-426. |
| [8] | WEI F L, LIU Y Z, YUE X A, et al. Thermal stability and transport property of multiple emulsions used as delayed crosslinker[J]. Acta Petrolei Sinica, 2008,29(3):423-426. |
| [9] | 王刚, 刘立新, 杨腾飞, 等. 螯合作用对多重乳液中Cr3+释放行为的影响[J]. 油田化学, 2016,33(1):40-45. |
| [9] | WANG G, LIU L X, YANG T F, et al. Influence of chelation on release of Cr3+ from multiple emulsions[J]. Oilfield Chemistry, 2016,33(1):40-45. |
| [10] | 贾虎, 蒲万芬, 孙琳. 一种用于高温油藏延缓成胶的就地聚合堵水凝胶:CN102382244A[P]. 2012-03-21. |
| [10] | JIA H, PU W F, SUN L. An in-situ polymerized plugging hydrogel used for delaying gel-forming in high temperature oil reservoirs: CN 102382244A[P]. 2012-03-21. |
| [11] | 申天伟, 陆少锋, 邢建伟, 等. 新型网状结构囊壁微胶囊化相变材料的制备[J]. 现代化工, 2019,39(1):110-113. |
| [11] | SHEN T W, LU S F, XING J W, et al. Preparation of novel microencapsulated phase change materials with a reticulated cyst shell[J]. Modern Chemical Industry, 2019,39(1):110-113. |
| [12] | 韩路路, 毕良武, 赵振东, 等. 微胶囊的制备方法研究进展[J]. 生物质化学工程, 2011,45(3):41-46. |
| [12] | HAN L L, BI LW, ZHAO Z D, et al. Adavances in microcapsules preparation biomass[J]. Chemical Engineering, 2011,45(3):41-46. |
| [13] | 黄福芝, 周倩. 诱导聚结法过硫酸铵缓释微胶囊的制备[J]. 化工进展, 2018,37(8):3076-3085. |
| [13] | HUANG F Z, ZHOU Q. Preparation of the sustained-release microencapsulation of ammonium persulfate by induced coalescence[J]. Chemical Industry and Engineering Progress, 2018,37(8):3076-3085. |
| [14] | 张福铭, 李学军, 陈小华, 等. 一种缓释破胶型压裂支撑剂及其制备方法:CN102690645A[P]. 2012-09-26. |
| [14] | ZHANG F M, LI X J, CHEN X H, et al. A sustainedrelease broken-type fracturing proppant and its preparation method: CN102690645A[P]. 2012-09-26. |
| [15] | 祁秀玲, 王佳, 陈俊荣, 等. 微胶囊技术在缓蚀剂中的应用及产品性能评(Ⅰ)[J]. 腐蚀科学与防护技术, 2011,23(5):445-448. |
| [15] | QI X L, WANG J, CHEN J R, et al. Application of microcapsule technology in corrosion inhibitor and characterization of sodium nitrite and thiourea microcapsule(Ⅰ)[J]. Corrosion Science and Protection Technology, 2011,23(5):445-448. |
| [16] | 陈中华, 梁家妮. 以负载缓蚀剂的二氧化硅微胶囊制备水性智能防腐涂料及其涂层性能研究[J]. 电镀与涂饰, 2018,37(6):231-235. |
| [16] | CHEN Z H, LIANG J N. Preparation of waterborne intelligent anticorrosive coating materials with corrosion-inhibitor-loaded silica microcapsules and study on properties of the coatings obtained therefrom[J]. Electroplating & Finishing, 2018,37(6):231-235. |
| [17] | 刘冬妮, 罗跃. 堵水调剖用交联剂微胶囊的制备[J]. 精细石油化工进展, 2010,11(5):44-46. |
| [17] | LIU D N, LUO Y. Preparation of crosslinker microencapsule for water-shutoff/profile modification[J]. Advances in Fine Petrochemicals, 2010,11(5):44-46. |
| [18] | 罗跃, 刘冬妮, 胡秋平, 等. 堵水调剖用有机铬交联剂的微胶囊化研究[J]. 油田化学, 2009,26(4):391-394. |
| [18] | LUO Y, LIU D N, HU Q P, et al. Microencapsulation of organic chromium crosslinker for polymer gelling fluid as water shutoff/profile modification agent[J]. Oilfield Chemistry, 2009,26(4):391-394. |
| [19] | 陈星光, 代加林. 包裹金属离子延迟交联凝胶堵水材料的制备与性能[J]. 精细石油化工, 2014,31(6):23-26. |
| [19] | CHEN X G, DAI J L. Synjournal and properties of delayed cross-linked gel material for water shutoff wrapping metal ions[J]. Speciality Petrochemicals, 2014,31(6):23-26. |
| [20] | JIA H, PU W F, ZHAO J Z, et al. Experimental investigation of the novel phenol-formaldehyde cross-linking HPAM gel system: Based on the secondary cross-linking method of organic cross-linkers and its gelation performance study after flowing through porous media[J]. Energy Fuels, 2011,25(2):727-736. |
| [21] | JIA H, YANG X Y, ZHAO J Z. Development of a novel in-situ-generated foamed gel as temporary plugging agent used for well workover: affecting factors and working performance[J]. SPE Journal, 2019,24(4):1757-1776. |
/
| 〈 |
|
〉 |