7 5, -. Denis A. MARAKOV (born 1978) graduated from Gubkin Russian State University of Oil and Gas in 2001. He is Candidate of Technical Sciences, associate professor of the Department of Gas and Condensate Field Development and Operation at Gubkin Russian State University of Oil and Gas (National Research University). He is expert in the field of development and operation of oil and gas fields and author of more than 40 publications, including 7 monographs and 5 thematic brochures in the field of the theory of development, research and operation of vertical and horizontal wells. E-mail: marakovdenis78@gmail.com 544.7:544.4:622.245..,..,..,.. ( «-,, 140180,.,.,.,. 1 ) THE USE OF COLLOIDAL SILICA FOR WATER ISOLATION WHILE REPAIRING LOW-PERMEABILITY INTERVALS OF WELLS N.N.EFIMOV, V.I. NOZDRJA, V.U. RODNOVA, V.. JAKOVENKO (LLC «Research and Production Company «Spetsburmaterialy» 140180, Moscow region, Zhukovsky, Gastello street, 1a, Russian Federation) - -. -,,,.,, -. The physicochemical and technological properties of the gel-forming composition based on concentrated alkaline silica sol of Polygel ACM-KZ are studied. The results of the estimation of the kinetics of bulk gelling in the presence of cement stone, the strength of gels, the sealing, and frost resistance are presented. Oilfield tests of the composition showed high efficiency for eliminating intercasing pressure, behind-the-casing flow and leakage of the couplings. 4 (289) 2017 55
:,, -, -. Keywords: silic sol, gelling kinetics, repair and insulation works. ( ) [1 5],. [6].. -, «in situ». -. - [3, 7 9], [7, 8], - [10], - [12]..,,, [11, 13 15]. - - - ( ),.. -, « ( 1). - -. - SiO 2 25,7 %. - 1 ( 2458-038-97757491 2010), / 3 1,2,. 9,5 10,5, 2 / 5,5, 8,0 10,0 SiO2, %. 30,0 56 ( )..
( ), 2., -. 45.. - -I-G 1 ( / 0,44). - ( 3 5 ) 10,, 1%- Na 2 -, ( 20 ). 80 -. : - [1, 21] [19, 20].,. (2 ). 24 -. 2,5 32,7. - 0,313 2., (25,7 % SiO 2, 0,3 % NaCl) - 23,. - 80-24. 1,012 / 3, -. - (R ). 2 ( ) ( ),.., % Flodrill AB 995 (SNF) 3 90 Magnafloc 611(BASF) 6 90 Praestol 2540 (Ashland) 14 28 Magnafloc LT25(BASF) 15 25 Magnafloc LT30 (BASF) 20 30 Praestol 2620 (Ashland) 20 25 4 (289) 2017 57
-. - 18.., -. (, -, ) -. -. (, - ) -., [16], -., ( 1). 1-1. - NaCl 25 90 ( : 25,7 % SiO2, 0,15 1,00 % NaCl) 58 ( )..
-. (25 90 ) - - : ln ( ) [ - ], (1). [16], - [17, 18]. - 0,5 12 25 90, -, 12..,. -., - 80 ( 10 ). Na 2 -. - - 1, 1%- Na 2-3. - Na 2 - ( - 3). 0,1 % Na 2 - -. 1 % Na 2 - -, -, - -. 3 Na2-. (NaCl) 0,5 %, SiO2 25 % Na2-, %., 70 90 105 25 0,1 150 40 0,5 135 30 1,0 40 15 4 (289) 2017 59
:,. 0,1 % Na 2 - -.., -, ( ),,,. 4 -, ( ), [19, 20]. 80,. 24. 4. 4,.,.,,. - [1, 21]. 40 7,5 % SiO 2 80 ( 2), 4 ( [19, 20]) - -,, Alcoflood 254S 2 % 0,5 % VEC-2 4 % 1 % DSGA 0,6 % 0,1 % l 0,5% NaCl 0,15 %, 5 10 5, 5 10 % 3,20 82,2, 2 10 6, 4,97 128 10 % 1,06 27,2..1 15,3 393,.. 60 ( )..
-., -. - [22, 23]. -,.. 3 -.,, - 10 13. - - ( 20 ), -. Praestol 2540 4. -, - 2. - SiO2 ( 24 25 ) 3. - SiO2 30 % - - (0,05 % ), 24 25, 4 (289) 2017 61
4. (30 % SiO2, - 7,5 ) - 25., ( - ).. HP-CFS. 5. 2687, -.. - ( 10 5 ),.,., - ( 5). -. 5, - ( ),. 62 ( )..
R = 2686,8 FIR = 80 V /V 5. - (, 10 3 ),.. - ( 50 3 /24 10,0 ). - 5,,, % 2,33 0,48 1 2,35 0,38 3 2,25 4,05 4 2,25 4,05 6 2,4 2,45 7 2,33 0,48 10 2,33 0,48 15 2,33 0,48 20 2,5 6,36 2,34-10 ( 1 ) 2,2 6,41 : 2,6 %, 25,7 % SiO2, 10 %. 18. 25. 4 (289) 2017 63
6,, 2013, 2013., 2013, 2014 2016,, 2016, 2017-35 - - 1,0 3-0,7 3-2,5 3-0,7 3 1,3 3-1,0 3 - - -, - - -, -,,. 6., ( - «5» / 0,8; 0,8 % 1,5 % «-3»). - -..,, - 25 90, -,,,., -. 1...,.. - -..:, 2004. 208. 64 ( )..
2. Bergna H.E. Colloidal Silica. Fundamentals and Application/H.E. Bergna, W.O. Roberts. Boca Raton: Taylor and Francis, 2006, 895 p. 3...,... :., 2003. 236. 4...,..,..,.. - //. 2015.. 18. 11.. 57 59. 5...,..,.. - //.. 2008. 1.. 34 41. 6... // -. 2016.. 12. 2.. 23 24. 7. Jurinak J.J., Summers L.E. Oilfield applications of colloidal silica gel//spe 18505-PA. 1991. 8. Lakatos I.J., Lakatos-Szabo J., Szentes G., Vago A., Karaffa Zs., Bodi T. New Alternatives in Conformance Control: Nanosilica and Liquid Polymer Aided Silicate Technology//SPE 174225-MS. 2015. 9. Robertson J.O., Oefelein F.O. Plugging Thief Zones in Water Injection Wells//SPE-1524- PA. 1967. 10. Kobayashi S., Soya M., Takeuchi N., Nobuto J., Nakaya A., T. Okuno T., Shimada S., Kaneto T., Maejima T. Rock Grouting and Durability Experiments of Colloidal Silica at Kurashiki Underground LPG Storage Base//ISRM-EUROCK-2014-168. 2014. ISRM Regional Symposium EU- ROCK 2014, 27 29 May, Vigo, Spain. 11. Bennett K.E., Fitzjohn J.L., Harmon R.A. Colloidal silica based yeuid diversion. US Patent No. 4732213, 1988. 12. Agerbaek M.K., Gregersen S.H.H., Eriksen K., Noer J., Mulrooney M. Successful Closure of Zonal Sand Production / SPE-145397-MS. - 2011. 13. Patil P., Kalgaonkar R. Environmentally Acceptable Compositions Comprising Nanomaterials for Plugging and Sealing Subterranean Formations//SPE-154917-MS. 2012. 14. Bøye B., Rygg A., Jodal C., Klungland I. Development and Evaluation of a New Environmentally Acceptable Conformance Sealant//SPE-142417-MS. 2011. 15. Vasquez J.E., Tuck D. Environmentally Acceptable Porosity-Fill Sealant Systems for Water and Gas Control Applications // SPE-174098-MS. 2015. 16...,..,..,.. - // -. 2016.. 23. 4.. 31 41. 17... //.. -. 2009. 2.. 25 31. 18... - - :. -. : 02.00.11 /., 2005. 277. 19. Petroleum and natural gas industries Field testing of drilling fluids. Part 1: Water-based fluids. International standard ISO 10414-1. Second Edition 2008-03-15. 20. API 13B-1. Standard practice for field testing water-based drilling fluids. Second Edition, September 1997. 21. : :.... : -... -, 2008. 56. 22. Hatzignatiou D.G., Askarinezhad R., Giske N.H., Stavland A. Laboratory testing of environmentally friendly sodium silicate systems for water management through conformance control//spe 173853, 2016. 23... - - :...., 2008. 142. 4 (289) 2017 65
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20. API 13B-1. Standard practice for field testing water-based drilling fluids. Second Edition, September 1997. 21. Krupin S.V. Geli i studni v neftepromyslovom dele: metodicheskie ukazaniia [Gels and jellies in the oilfield industry: guidelines]. Kazan', KGTU Publ., 2008, 56 p. 22. Hatzignatiou D.G., Askarinezhad R., Giske N.H., Stavland A. Laboratory testing of environmentally friendly sodium silicate systems for water management through conformance control. SPE 173853, 2016. https://doi.org/10.2118/173853-pa. 23. Osipov P.V. Kolloidno-himicheskie osnovy tehnologii intensifikacii nefteizvlechenija iz plastov posredstvom polisilikatov natrija: Dis.kand. tehn. nauk [Colloid and chemical foundations of oil recovery intensification from reservoirs using sodium polysilicates. Dr. eng. sci. diss]. Kazan', KGTU Publ., 2008, 142 p... 1982., - «- -. - -. 35. Nikolaj N. EFIMOV graduated from Gubkin Russian State University of Oil and Gas in 1982. He is Candidate of Technical Sciences, Head of the Laboratory of Materials and Technologies for Repairs and Insulation in Oil and Gas Wells at Spetsburmaterially Research and Production Company. He is specialist in the field of repair and insulation works and author of 35 scientific publications. E-mail: efimovniknik@mail.ru.. 1971. -, «- -.,. 200. Vladimir I. NOZDRJA graduated from Moscow State University in 1971. He is Candidate of Geological and Mineralogical Sciences, General Director of Spetsburmaterially Research and Production Company. He is specialist in the field of geology and drilling. He is author of more than 200 scientific publications. E-mail: npk@scsbm.ru ( ).. 2015. ( ).., - - - «- «-». Valentina Y. RODNOVA graduated from Gubkin Russian State University of Oil and Gas in 2015. She is engineer of the Laboratory of Materials and Technologies for Repairs and Insulation in Oil and Gas Wells at Spetsburmaterially Research and Production Company. E-mail: valentinadinges@rambler.ru 2011. - «-. Vitalij A. JAKOVENKO graduated from Kuban State Technical University in 2011. He is leading engineer of the Laboratory of Materials and Technologies for Repairs and Insulation in Oil and Gas Wells at Spetsburmaterially Research and Production Company. E-mail: jakovenko@scsbm.ru 4 (289) 2017 67