Conditions, consequences and prevention ways of behind-the-casing flow in deep well injection disposal of liquid waste sites

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription or Fee Access

Abstract

The main detection methods, signs, geotechnical conditions, factors and potential consequences of liquid radioactive waste (LRW) behind-the-casing flow are described in the paper. Based on the modeling results for the real LRW components behind-the-casing flow, the mechanism of behind-the-casing flows evolution in the intervals of wells with increased permeability of cement stone are presented. The concentration of LRW components in these intervals changes significantly in time and depends not only on their current concentration in the waste and the permeability of the rock, but also on the pressure gradient, the direction and absolute value of which are determined by the well operation mode and natural hydrogeological conditions. It is noted that behind-the-casing flows of groundwater and LRW components are formed primary in injection wells, above its filter and top of aquifer used for LRW disposal (operational aquifer). The behind-the-casing flows lead to technogenic changes in the geological environment, which are local in space and time, and reduce the safety of such facilities as deep-level disposal sites for LRW (DDF LRW).

The vertical channel of increased permeability around injection wells and behind-the-casing flows may be prevented by improving the design and construction materials of wells, adjustment of the LRW disposal mode and other methods, including the use of new sealing materials and clarifying technical solutions.

Full Text

Restricted Access

About the authors

A. V. Ponizov

Scientific and Engineering Centre for Nuclear and Radiation Safety

Author for correspondence.
Email: ponizov@secnrs.ru
Russian Federation, 2/8, bld. 5, Malaya Krtasnosel’skaya str., Moscow, 107140

P. M. Vereshchagin

Scientific and Engineering Centre for Nuclear and Radiation Safety

Email: ponizov@secnrs.ru
Russian Federation, 2/8, bld. 5, Malaya Krtasnosel’skaya str., Moscow, 107140

N. V. Chulkov

Scientific and Engineering Centre for Nuclear and Radiation Safety

Email: ponizov@secnrs.ru
Russian Federation, 2/8, bld. 5, Malaya Krtasnosel’skaya str., Moscow, 107140

M. K. Sharaputa

JSC VNIPI promtekhnologii

Email: sharaputa.M.K@vnipipt.ru
Russian Federation, 33, Kashirskoe sh., Moscow, 115409

E. A. Baidariko

Lomonosov Moscow State University

Email: hydrogeo@mail.ru
Russian Federation, 1, Leninskie gory, Moscow, 119991

References

  1. Agadullin, I.I., Ignatiev, V.N., Sukhorukov, R.Yu. Ekologicheskie aspekty negermetichnosti zakolonnogo prostranstva v skvazhinakh razlichnogo naznacheniya [Environmental aspects of the leakage annulus in the wells for various purposes]. Neftegazovoe delo, 2011, no. 4, pp. 82-90. Available at: http://www.ogbus.ru (in Russian).
  2. Bozyrev, Yu.S. Metody predotvrashcheniya smyatiya obsadnykh kolonn glubokikh skvazhin v slozhnykh gorno-geologicheskikh usloviyakh. [Prevention method for crumpling of casing strings in deep wells at difficult mining and geological conditions]. Diss. dokt. tekhn. Nauk, Moscow, 2006. 323 p. (in Russian)
  3. Vereshchagin, P.M. Razrabotka korrozionnostoikikh tamponazhnykh materialov dlya nadezhnogo obespecheniya ekologicheskoi bezopasnosti pri sooruzhenii i likvidatsii skvazhin poligonov zakhoroneniya zhidkikh radioaktivnykh otkhodov. [Development of corrosion-resistant oil-well materials for support environmental safety in the construction and close of wells deep disposal facilities for liquid radioactive waste]. Diss. cand. tekhn. nauk. Moscow, MUCTR Publ., 2010, 204 p. (in Russian)
  4. Gol’dberg, V.M., Skvortsov, N.P., Luk’yanchikova, L.G. Podzemnoe zakhoronenie promyshlennykh stochnykh vod [Deep disposal of industrial wastewater]. Moscow, Nedra Publ., 1994, 281 p. (in Russian).
  5. Dakhnov, V.N., D’yakonov, D.I. Termicheskie issledovaniya skvazhin [Thermal studies of wells]. Moscow, Leningrad, Gostoptekhizdat Publ., 1952, 251 p. (in Russian).
  6. Dolgikh, L.N. Kreplenie, ispytanie i osvoenie neftyanykh i gazovykh skvazhin [Fastening, testing and development of oil and gas wells]. Perm, PNRPU Publ., 2007, 189 p. (in Russian).
  7. Ishbaev, G.G., Bikinyaev, R.A. Tekhnologiya RIR – otsechenie mezhplastovykh peretokov po stvolu skvazhin [Technology repair of insulation work – pruning interstratal power exchange along the wellbore]. Burenie i neft’, 2010, no. 12, pp. 22-25. (in Russian).
  8. Kerkis, E.E. Metody izucheniya filtratsionnykh svoistv gornykh porod [Methods of studying the filtration properties of rocks]. Leningrad, Nedra Publ., 1975, 231 p. (in Russian).
  9. Kuranov, P.N. Opredelenie istochnikov zagryazneniya podzemnykh i poverkhnostnykh vod v raione raspolozheniya poligonov sbrosa poputnykh i stochnykh vod [Determination of sources of groundwater and surface water pollution in the area of associated and wastewater discharge landfills]. Problemy bezopasnosti i chrezvychainykh situatsii, 2013, no. 5, pp. 118-130. (in Russian).
  10. Glinskii, M.L., Pozdniakov, S.P., Chertkova, L.G. et al. Modelirovanie posledstvii ekspluatatsii poligona glubinnogo zakhoroneniya zhidkikh radioaktivnykh otkhodov sibirskogo khimicheskogo kombinata na srednesrochnyi i sverkhdolgosrochnyi periody [Modeling of the consequences of operation of the deep burial site of liquid radioactive waste of the Siberian chemical plant for the medium and long-term periods]. Radiokhimiya, 2014, vol. 56, no. 6. pp. 554-560. (in Russian).
  11. Neskoromnykh, V.V. Razrushenie gornykh porod pri provedenii geologorazvedochnykh rabot [Destruction of rocks during geological exploration]. Krasnoyarsk, SibFU Publ., 2015, 396 p. (in Russian).
  12. Piskunov, A.I., Leusheva, E.L. Analiz prichin proyavleniya zakolonnykh peretokov [Analysis of the causes of the annular flow]. Problemy nauchno-tekhnicheskogo progressa v burenii skvazhin: sbornik dokladov vserossiiskoi nauchno-tekhnicheskoi konferentsii s mezhdunarodnym uchastiem posvyashchennoi 60-letiyu kafedry bureniya skvazhin [Problems of scientific and technical progress in well drilling: Proc. of all-Russ. sci. and techn. conference]. Tomsk, TPU Publ., 2014, pp. 288-296. (in Russian).
  13. Permiakov, I.G., Khairedinov, N.Sh., Shevkunov, E.N. Neftegazopromyslovaya geologiya i geofizika [Oil and gas geology and geophysics]. Moscow, Nedra Publ., 1986, 269 p. (in Russian).
  14. Rybal’chenko, A.I., Pimenov, M.K., Kostin. P.P. et al. Glubinnoe zakhoronenie zhidkikh radioaktivnykh otkhodov [Deep disposal of liquid radioactive waste]. Москва, IzdAT Publ., 1994, 256 p. (in Russian).
  15. Chiang, W. H., Kinzelbach, W. 3D-Groundwater Modeling with PMWIN. First Edition. New York, Springer Berlin Heidelberg, 2001, 346 p.

Supplementary files

Supplementary Files
Action
1. JATS XML
Download
2. Fig. 1. Geological and technical section of an injection well with a channel of annular flow of fluids. 1 - the direction of movement of liquids; 2 - the interval of the destroyed cement; 3 - thickness of the cement ring; 4 - channel length overflow.

Download (333KB)
Indexing metadata
3. Fig. 2. Signs of annular ascending overflow of waste components along the borehole H-10 according to gamma-ray logging and thermometry. 1 - operational horizon; 2 - aquifers; 3 - poorly permeable strata; gamma log data: 4–2012, 5–2008; 6 - thermometry data 2008; 7 - base thermogram.

Download (697KB)
Indexing metadata
4. Fig. 3. The change in the height of the migration of waste components in the borehole H-10 in time according to the data of monitoring and modeling. 1 — gamma logging data; 2 - simulation data; 3 - filtration coefficient of the medium in the overflow channel; 4 - the generalized period of intermittent injection of LRW; 5 - the period of repair work; 6 - the position of the roof of the exploited horizon.

Download (251KB)
Indexing metadata
5. Fig. 4. Graphs of fluctuations in the pressure of groundwater (a) and the relative concentration of the neutral component (b) in the flow channel in time according to the simulation data. 1-2 - head at the height above the roof of the horizon: 1 - 1 m, 2 –18 m; 3 - the generalized period of intermittent injection of LRW into the well H-10; 4-5 - the concentration of the substance at a height above the roof of the horizon: 4 - 1 m, 5 –18 m; 6 - concentration of a substance in LRW.

Download (366KB)
Indexing metadata
6. Fig. 5. Area of distribution of waste components as of 2008 (10 years after the beginning of annular overflow) according to modeling data in the context of: a - homogeneous water seal, b - heterogeneous layered water seal.

Download (782KB)
Indexing metadata

Copyright (c) 2019 Russian academy of sciences