Отправлено: 27.08.10 11:12. Заголовок: Каротажник 193 (4) выпуск 2010

... ler, A. V. Miller, A. V. Sudnichnikov, V. G. Sudnichnikov, S. V. Stepanov
testing electromagnetic diagnostics of casing and tubing strings by emds-tm-42ts in china oil fields

For the first time, model and field test data on electromagnetic downhole defectoscopy by equipment EMDS-TM-42TS from Xinjiang oil field, China have been presented. The tests comprised three major stages: 1) resolution and error verification for string defect detection in single- and multistring structures; 2) checkup of downhole tool temperature and pressure characteristics; 3) testing the capabilities of the electromagnetic defectoscopy in some real oil wells.
Key words: electromagnetic defectoscopy, model and field tests, China.



S. F. Kostyuchenko
experience in pore pressure gradients evaluation and primary stratigraphical typing in the north caucasus geologic section based on geologic and technological data

The results of geologic and technological surveys (GTI) on certain geological targets have been given. GTI have been shown to be an effective way for a preliminary evaluation of pore pressure gradients and the section’s stratigraphical typing.
Key words: geologic and technological surveys, pore pressure.

Literatura
1. Geologiya SSSR. Tom IX. Geologiya Severnogo Kavkaza. M.: Nedra, 1968. 765 s.
2. Lukjyanov Eh. E., Nesterova T. N. Normalizaciya mekhanicheskoyj skorosti bureniya s celjyu resheniya zadach GTI // NTV “Karotazhnik”. 2000. Tverj: Izd. AIS. Vihp. 69. S. 54–72.
3. Metodika operativnoyj ocenki porovihkh davleniyj v glinakh po dannihm normalizovannoyj skorosti prokhodki skvazhin / B. L. Aleksandrov, S. G. Fursin // Minnefteprom. Glavnoe proizvodstvennoe upravlenie promihslovoyj i polevoyj geofiziki. SKB promihslovoyj geofiziki. Groznihyj, 1986.
4. Nesterova T. N., Kudryavcev D. A. Vozmozhnosti kontrolya i prognoza plastovihkh davleniyj v realjnom vremeni provodki skvazhinih // NTV “Karotazhnik”. Tverj: Izd. AIS. 2002. Vihp. 100. S. 236–248.
5. RD 39-0147716-102-87. Geologo-tekhnologicheskie issledovaniya v processe bureniya. Ufa: VNIIneftepromgeofizika, 1987.



V. M. Dobrynin, A. V. Gorodnov, V. N. Chernoglazov, A. K Sheshunov
numerical simulation of sonic well cement-bond logging

On the basis of data about mechanical properties of different-composition cement samples, mathematical simulation of sonic log for a cased well model has been done. Useful-information parameters of waves characterizing cement bond quality, their frequency dependencies on string-cement and cement-rock gap dimensions have been found.
Key words: acoustics, simulation, mechanical properties, cement-bond logging.

Literatura
1. Vyakhirev V. I., Kuznecov Yu. S., Yankevich V. F. Oblegchennihe tamponazhnihe rastvorih dlya krepleniya gazovihkh skvazhin. M., 2000.
2. Gutorov Yu. A. Metod shirokopolosnogo akusticheskogo karotazha dlya kontrolya tekhnicheskogo sostoyaniya obsazhennihkh skvazhin neftyanihkh i gazovihkh mestorozhdeniyj. Ufa, 1995.
3. Ivakin B. N., Karus E. V., Kuznecov O. L. Akusticheskiyj metod issledovaniya skvazhin. M., 1978.
4. Pavlova N. N. Deformacionnihe i kollektorskie svoyjstva gornihkh porod. M., 1975.
5. Pryamov P. A., Bernshteyjn D. A. Rukovodstvo po primeneniyu akusticheskikh i radiometricheskikh metodov kontrolya kachestva cementirovaniya neftyanihkh i gazovihkh skvazhin. Ufa, 1978.
6. Biot M. A. Mechanics of deformation and acoustic propagation in porous media. J. Appl. Phys. 33, 4. R. 1482–1498 (1962).
7. Plyushchenkov B. D., Turchaninov V. I. Code for acoustic logging modeling in radial layering medium. M., 2003.
8. Plyushchenkov B. D., Turchaninov V. I. Acoustic logging modeling by refined Biot’s equations. Int. J. Mod. Phys. C. 11, 2. 365–396 (2000).



V. I. Ivannikov
possible mechanisms of hydrocarbons migration in porous permeable formations

Novel ideas about the mechanism of oil’s secondary migration in permeable rocks of the sedimentary masses have been considered.
Key words: oil, gas, traps, migration.

Literatura
1. Ivannikov V. I. Teoriya konvergencii uglevodorodov i ee geologicheskie sledstviya // NTZh “Geologiya, geofizika i razrabotka neftyanihkh i gazovihkh mestorozhdeniyj”. M.: VNIIOEhNG, 2002. № 10.
2. Sokolov V. A. Processih obrazovaniya i migracii nefti i gaza M.: Nedra, 1965. 275 s.
3. Sorokova E. I., Burcev M. I., Kochofa A. G. Fazovaya zonaljnostj uglevodorodov nizhnekongolezskoyj vpadinih (Respublika Angola) // NTZh “Geologiya, geofizika i razrabotka neftyanihkh i gazovihkh mestorozhdeniyj”. M.: VNIIOEhNG, 2002. № 10.


A. I. Lysenkov, V. N. Ryndin, A. D. Osipov
AIPD-7-10 tool AS AN effective TOOL FOR hydrodynamicAL logging in shallow wells

Examples of using a hydrodynamical logging tool AIPD-7-10 in shallow wells on a producing oil field and a potassium salt field have been discussed. The logs were used to solve problems of formation pressure profiling for the oil field wells and evaluate hydrodynamical parameters of water-bearing formations in potassium salt field wells.
Key words: hydrodynamical logging, Russian tools, shallow wells, formation pressure profile, hydrodynamical parameters of formations.

Literatura
1. Brodskiyj P. A., Fionov A. I., Zhuvagin V. G., Khasanshin R. S., Bubeev A. V. Apparatura dlya issledovaniya pritoka i davleniya (AIPD-7-10) // Neftegazovaya geologiya i geofizika. M.: VNIIOEhNG, 1973. № 8. S. 5–11.
2. Rihndin V. N., Lihsenkov A. I., Ibragimov R. R. Rezuljtatih primeneniya pryamihkh metodov GIS v Respublike Kazakhstan // NTV “Karotazhnik”. Tverj: Izd. AIS. 2004. Vihp. 114. S. 145–152.
3. Rihndin V. N., Murzakov E. M., Sagirov S. V., Nikolaev N. A., Shakirov A. A., Basharova R. M. Ispihtanie plastov i otbor glubinnihkh prob apparaturoyj na kabele // NTV “Karotazhnik”. Tverj: Izd. AIS. 2006. Vihp. 148–149. S. 255–272.
4. Fionov A. I., Zhuvagin V. G., Bubeev A. V. Issledovanie skvazhin s pomothjyu apparaturih AIPD-7-10 v processe bureniya // Neftyanoe khozyayjstvo. M., 1982. № 3. S. 14–17.
5. Shakirov A. A., Rihndin V. N., Fionov A. I. Kompjyuterizirovannaya apparatura AGIP-K gidrodinamicheskogo karotazha i oprobovaniya plastov // NTV “Karotazhnik”. Tverj: Izd. AIS. 2002. Vihp. 93. S. 125–127.



A. P. Bazylev
hydrolistening and tracing in combined hydrodynamical investigations on heterogeneous reservoirs

Filtration flow hydrolistening and tracing resolutions in heterogeneous reservoirs filtration investigations have been compared. Both feasibility and advantages of combining the filtration flow hydrolistening and tracing in filtration investigations in the heterogeneous reservoirs have been shown. The conclusions made about the new prospects for interpretation of and more useful information from these combined methods have been validated by practical examples.
Key words: hydrodynamical investigations, hydrolistening, tracing investigations, heterogeneity, interpretation improvement.

Literatura
1. Denk S. O. “Netipichnihe” produktivnihe objhektih: problemih i resheniya. Izd. 2-e. Permj: Ehlektronnihe izd. sistemih, 2005. 347 s.
2. Zakirov S. N., Indrupskiyj I. M. i dr. Novihe principih i tekhnologii razrabotki mestorozhdeniyj nefti i gaza. Ch. 2. M.–Izhevsk: Institut kompjyuternihkh issledovaniyj, NIC “Regulyarnaya i khaoticheskaya dinamika”, 2009. 484 s.
3. Umrikhin I. D., Dneprovskaya N. I., Buzinov S. N., Fedorcov V. K. Metodika opredeleniya parametrov neodnorodnosti i podscheta zapasov po dannihm gidrodinamicheskikh issledovaniyj // Geologiya nefti i gaza. 1982. № 5.
4. Chernorubashkin A. I., Makeev G. A., Gavrilenko G. A. Primenenie indikatornihkh metodov dlya kontrolya za razrabotkoyj neftyanihkh mestorozhdeniyj. M.: VNIIOEhNG, 1985.

N. L. Mirontsov
analysis of capabilities of synthetic sondes in low-frequency induction logging

Possible improvement of geophysical characteristics of low-frequency induction logging by using synthetic sondes has been discussed. Conclusions about ineffective practical application of the method have been made.
Key words: induction logging, inverse problem, synthetic sondes.

Literatura
1. Anderson B. I., Barber T. D. Induction Logging. Sshlumberger. 1996. 45 r.
2. Antonov Yu. N., Ehpov M. I., Glebocheva N. K. Ehkspress-ocenka nasihthennosti perekhodnoyj zonih kollektorov po dannihm VIKIZ // NTV “Karotazhnik”. Tverj: Izd. AIS. 2001. Vihp. 83. S. 103–114.
3. Verbzhickiyj V. V., Devicin V. A., Snezhko O. M. Rezuljtatih ispihtaniyj modulya 4IK-73G v gorizontaljnihkh skvazhinakh tresta “Surgutneftegeofizika” // NTV “Karotazhnik”. Tverj: Izd. AIS. 1999. Vihp. 57. S. 87–97.
4. Dakhnov V. N. Interpretaciya rezuljtatov geofizicheskikh issledovaniyj skvazhin. M.: Nedra, 1972. 368 s.
5. Debrant R. Teoriya i interpretaciya rezuljtatov geofizicheskikh metodov issledovaniya skvazhin. M.: Nedra, 1972. 288 s.
6. Devicin V. A., Kagan G. Ya., Pantyukhin V. A. i dr. Mnogozondovihe kompleksih indukcionnogo karotazha // NTV “Karotazhnik”. Tverj: Izd. AIS. 1997. Vihp. 30. S. 24–32.
7. Dollj G. G. Teoriya indukcionnogo metoda issledovaniya razrezov skvazhin i ego primenenie v skvazhinakh, proburennihkh s glinistihm rastvorom na nefti // Voprosih promihslovoyj geofiziki. M.: Gostoptekhizdat, 1957. S. 252–274.
8. Iljin V. A., Poznyak Eh. G. Lineyjnaya algebra. M.: Nauka, 1978. 304 s.
9. Mironcov N. L. Primenenie metoda resheniya uravneniya Fredgoljma pervogo roda tipa svertki dlya zadach indukcionnogo karotazha // Geofizicheskiyj zhurnal. 2009. № 3. T. 31. S. 116–120.
10. Mironcov N. L. Metod resheniya obratnoyj 2D zadachi indukcionnogo karotazha // Geofizicheskiyj zhurnal. 2009. № 4. T. 31. S. 196–203.
11. Mironcov M. L. Metod bihstrogo resheniya pryamoyj i obratnoyj zadachi indukcionnogo karotazha // Dokladih Nacionaljnoyj akademii nauk Ukrainih. 2004. № 9. S. 130–133.
12. Moran I. H., Kunz K. S. Basic theory of induction logging and application to stady of two-coil sondes // Geophysics. 1962. V. 27. № 6. P. 829–858.
13. Pirson S. Dzh. Spravochnik po interpretacii dannihkh karotazha. M.: Nedra, 1996. 414 s.
14. Plyusnin M. I. Indukcionnihyj karotazh. M.: Nedra, 1968. 140 s.
15. Suresh G. Thadani, Hugh E. Hall. Propagated Geometrical Factors in Induction Logging // Transactions of the SPWLA 22nd Annual Logging Symposium, Mexico City, Mexico. 1981. June 23–26. Paper WW.
16. Tamm I. E. Osnovih teorii ehlektrichestva. M: Nauka, 1976. 616 s.
17. Tekhnologiya issledovaniya neftegazovihkh skvazhin na osnove VIKIZ: Metodicheskoe rukovodstvo / Pod. red. Ehpova M. I., Antonova Yu. N. Novosibirsk: NIC OIGGM SO RAN; Izdateljstvo SO RAN, 2000. 121 s.
18. Ehpov M. I., Glinskikh V. N., Uljyanov V. N. Ocenka kharakteristik prostranstvennogo razresheniya sistem indukcionnogo i vihsokochastotnogo karotazha v terrigennihkh razrezakh Zapadnoyj Sibiri // NTV “Karotazhnik”. Tverj: Izd. AIS. 2001. Vihp. 81. S. 19–57.



G. D. Likhovol, A. F. Kovalev
results of reinterpretation of the data of hydrodynamical surveys on the achimovskie sediments

The results of processing and profound analysis of the data of tests on poorly-producing Achimovskie formations in the Nizhnevartovsky district fields.
Key words: borehole, formation, hydrodynamical surveys, inflow curve, Achimovskie sediments.

Literatura
1. Gidrodinamicheskie issledovaniya malodebitnihkh neftyanihkh skvazhin / A. K. Yagafarov, V. K. Fedorcov, A. P. Telkov i dr. Tyumenj: Izdateljstvo “Vektor Buk”, 2006. 352 s.
2. Zotov G. A., Tverkovkin S. M. Gazogidrodinamicheskie metodih issledovaniyj gazovihkh skvazhin. M.: Nedra, 1970. 191 s.
3. Ipatov A. I., Kremeneckiyj M. I. Geofizicheskiyj i gidrodinamicheskiyj kontrolj razrabotki mestorozhdeniyj uglevodorodov. M.: NIC “Regulyarnaya i khaoticheskaya dinamika”; Institut kompjyuternihkh issledovaniyj, 2005. 780 s.
4. Ispihtanie neftegazorazvedochnihkh skvazhin v kolonne / Yu. V. Semenov, V. S. Voyjtenko, K. M. Obmorihshev i dr. M.: Nedra, 1983. 285 s.
5. Kovalev A. F., Shakirov R. A., Likhovol G. D. Analiz krivihkh davleniya, poluchaemihkh v processe vtorichnogo vskrihtiya plasta perforacieyj // Neftyanoe khozyayjstvo. 2008. № 2. S. 76–77.
6. Likhovol G. D., Kovalev A. F. Gidrodinamika neodnorodnihkh plastov pri vihzove pritoka kompressirovaniem // NTV “Karotazhnik”. Tverj: Izd. AIS. 2009. Vihp. 6 (183). S. 51–64.
7. Likhovol G. D., Kovalev A. F. Osobennosti interpretacii krivihkh pritoka i poglotheniya, poluchaemihkh v gorizontaljnihkh skvazhinakh // NTV “Karotazhnik”. Tverj: Izd. AIS. 2009. Vihp. 7 (184). S. 98–112.
8. Mironov A. Yu. Izuchenie geologicheskogo stroeniya i razrabotka achimovskikh otlozheniyj putem zarezki bokovihkh stvolov // Vestnik nedropoljzovatelya Khantih-Mansiyjskogo avtonomnogo okruga. M.: GeoDataConsulting, 2007. № 18.
9. Novihe tekhnologii apparaturno-metodicheskogo soprovozhdeniya prostrelochno-vzrihvnihkh rabot pri vtorichnom vskrihtii / L. A. Zvereva, R. A. Shakirov, A. F. Kovalev, L. R. Shakirova // NTV “Karotazhnik”. Tverj: Izd. AIS. 2008. Vihp. 167. C. 7–19.
10. Shishigin S. I. Korrelyaciya pronicaemosti produktivnihkh porod po kernu i dannihm gidrodinamiki // Puti povihsheniya ehffektivnosti geologo-razvedochnihkh rabot na neftj i gaz: Trudih ZapSibNIGNI. Tyumenj, 1978. Vihp. 130. S. 95–97.

A. M. Nosyrev
a technique for water and oil quantity evaluation in the formation fluid by drillstem formation testers

A technique for water and oil quantity evaluation in the formation fluid which entered the pipes while testing the formations with drillstem formation testers in exploratory boreholes has been given. It has been shown that a process water should be added as a topping-up liquid to provide more dependable and reliable testing.
Key words: drillstem formation testers (DST), oil, formation and technical water, drilling mud.

Literatura
1. Mithenko M. T. Raschetih pri dobihche nefti i gaza. M.: Izd-vo “Neftj i gaz” RGU nefti i gaza im. I. M. Gubkina, 2008. S. 34–38.
2. Nosihrev A. M. Raschetnihyj metod opredeleniya soderzhaniya vodih i nefti v plastovoyj zhidkosti skvazhin ispihtatelyami plastov na trubakh // NTV “Karotazhnik”. Tverj: Izd. AIS. 2007. Vihp. 1. S. 78–87.
3. Nosihrev A. M. Dinamika postupleniya zhidkosti v trubih ispihtateleyj plastov // NTV “Karotazhnik”. Tverj: Izd. AIS. 2007. Vihp. 7. S. 13–23.
4. Nosihrev A. M. Vremya postupleniya zhidkosti razlichnogo sostava v trubih pri ispihtanii plastov // Burenie i neftj. 2010. № 1. S. 41–43.





E. A. Vinogradov, Yu. V. Antipkin
a method for adjustment of analog corrector in downhole tools’ heat-resistant transmitter

A method for a preliminary correction of digital signals in downhole tools’ transmitter by adjusting a correcting pulse width rather than amplitude has been proposed.
Key words: borehole, heat-resistant equipment, signals coding, transmitter, correction.

Literatura
1. Vinogradov E. A., Antipkin Yu. V., Torcev A. V. Skvazhinnaya telemetriya // Tekhnologii seyjsmorazvedki. 2006. № 2. S. 48–53.
2. Ishuev T. N., Doronkin A. K., Sagdeev R. K. Razvitie tekhniki i metodiki VSP na osnove razrabotki skvazhinnihkh telemetricheskikh sistem registracii s raspredelennihkh datchikov // Sb. referatov “Galjperinskie chteniya”. M.: CGEh, 2006. S. 90–93.
3. Prokis Dzh. Cifrovaya svyazj / Per. s angl.; pod red. D. D. Klovskogo. M.: Radio i svyazj, 2000. 800 s.
4. Baig et al. Pre-emphasis circuitry and methods. Patent SShA 6, 956, 407.
5. Savoj. Method and apparatus for performing transmit pre-emphasis. Patent SShA 7, 155, 164.



S. M. Akselrod
nanotechnology in oil and gas industry: ideas, projects, implementations
(based on foreign publications)

Existing ideas about applying nanotechnology in oil and gas industry and its influence on the geophysical methods applied in hydrocarbon field exploration and reservoir engineering monitoring have been considered.
Key words: borehole, hydrocarbons, nanotechnology, nanoparticles, carbon nanotubes, fullerenes, drilling, production, geophysical surveys, monitoring.

Literatura
1. AEC (Advanced Energy Consortium). Request for Proposals, Micro- and Nanosensors for Oil and Gas Exploration and Production Application. 14 July, 2008. http://www.beg.utexas.edu/aec/pdf/AEC_RFP_12July08F.pdf<\/u><\/a>
2. Alberta & Nanotechnology for Oil, Gas, Petrochemicals: November 2007. Оn-line Release: http://www.quantiam.com/news/AlbertaNanoColumnNovember2007.pdf<\/u><\/a>
3. Amanullah Md., Al-Tahini A. M. Nano-Technology, Its Significance in Smart Fluid Development for Oil and Gas Field Applications. SRE 126102, 2009.
4. Angelescu D. E. et al. A Small World with Great Promise, Schlumberger Oil Field Review. Р. 60–68. Spring 2007. http://www.slb.com/media/services/resources/oilfieldreview/ors07/spr07/p60-68.pdf<\/u><\/a>
5. Barron A. Nanotechnology for the Oil and Gas Industry. Connexions, Rice University. Р. 177. 2009.
6. Bhat P., Bhat S. Nanologging: Use of Nanorobots for Logging. SPE 104280, 2006 Eastern Regional Meeting, Canton, Ohio, 11–13 October 2006.
7. Bogue R. Nanosensors: a review of recent progress, Sensor Review, V. 28, Issue 1, p. 12–17, 2008.
8. Bryant S. L. Nanoparticles Engineering in Subsurface Processes. Center for Petroleum Geosystems, on- line release. April, 2009. http://www.cpge.utexas.edu/nesp<\/u><\/a>
9. Fennimore A. M., Yuzvinsky T. D. Han, W-Q., Fuhrer M. S., Cumings J., Zetti A. Rotational actuators based on carbon nanotubes. Nature, V. 424. 4 July, 2003. Р. 408–410.
10. Gillet S. L. Nanotechnology: Clean Energy and Resources for the Future. White Paper for Foresight Institute, 2002. Р. 91. http://www.foresight.org/impact/whitepaper_illos_iev3.pdf<\/u><\/a>
11. Graham-Rowe D. Energy companies pour millions into nanotechnology for oil and gas recovery. Technology Review, January 25, 2008.
http://beta.technologyreview.com/printer_friendly_article.aspx?id=20<\/u><\/a>
12. Huang T, Crews J. B. Nanotechnology Application in Viscoelastic Surfactant Stimulation Fluids. SPE Production & Operation. V. 23, Issue 4, November 2008. Р. 512–517.
13. Huang T., Crews J. B., Willingham J. R. SPE 115384-MS, Using Nanoparticles to Control Formation Fines Migration. SPE Annual Conference and Exhibition, Denver, Colorado, 21–24 September 2008.
14. Huang T., Crews J. B., Willingham J. R. IPTC-12414-MS, Nanoparticles for Formation Fines Fixation and Improving Performance of Surfactant Structure Fluids, International Petroleum Technology Conference, 3–5 December, 2008, Kuala Lumpur, Malasia.
15. Industrial Nanotech Announces Results of September Meeting in NY and J with Petrobras, One of the World’s Top Ten Energy Producers. PRWeb, October 8, 2008. http:/www.prweb.com/releases/2008/10/prweb1433674.htm
16. Jasinski J., Petroff P. Applications: Nanodevices, Nanoelectronics, and Nanosensors, Chapter 6, p.77–96, in Nanotechnology Research Directions: IWGN Workshop Report. Vision for Nanotechnology R&D in the Next Decade, eds. Roco M. C. et al., National Science and Counsel, 1999.
17. Krishnamoorti R. Extracting the Benefits of Nanotechnology for the Oil Industry. JPT on-line, November 2006, V. 58, № 11. http://www.spe.org/sper-app/spe/jpt/2006/11/tech_tomorrow.htm<\/u><\/a>
18. Mansoori G. Ali. Principles of Nanotechnology. World Scientific, New Jersey, London, Singapore, p. 341, 2006.
19. Mirkin C. A., Niemeyer C. M. Nanobiotechnology II, More Concepts and Applications. WILEY-VCH Verla.
20. Mokhatab S., Fresky M. A., Islam M. R. Application of Nanotechnology in Oil and Gas E&P, Journal of Petroleum Technology, Vol. 58, № 4, April 2006. Р. 48–53.
21. Nanotechnology. Оn-line press release, 06/03/2009. http://www.shell.com/home/content/global_solutions/aboutshell/<\/u><\/a> impact_online/2009_issue_1/2009_1_nanotechnology.pdf
22. Nanotech, Conference and Expo 2009, May 3–7, Houston. http://www.nsti.org/Nanotech2009/program/energy_environment.html<\/u><\/a>
23. Peng S., O’Keeffe J., Wei C., Cho K. Carbon Nanotubes Chemical and Mechanical Sensors. 3rd International Workshop on structural Health Monitoring, 2005. http://people.nas.nasa.gov/~cwei/Publication/cnt_sensor.pdf<\/u><\/a>
24. Paek J et al. A Wireless network for structural Health Monitoring: Performance and experience. 2005. http://scholar.google.com/scholar?q=3rd+International+Workshop+on+structural+Health+Monitoring&hl=en&rlz=1G1GGLQ_ENUS357&um=1&ie=UTF-8&oi=scholart<\/u><\/a>
25. SPE Applied Technology Workshop. Nanotechnology in the Oil and Gas Industry – an Evolution or Revolution? 6–10 December, Malasia, 2009. http://www.aboutoilandgas.org/events/09alan/documents/09ALAN_Brochure13Nov.pdf<\/u><\/a>
26. Shankar Ghosh, A. K. Sood, N. Kumar, Carbon Nanotube Flow Sensors, Science, 14 February 2003: Vol. 299. №. 5609. Р. 1042–1044.