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The quarterly scientific and technical journal, Reporter of the Association of Drilling Contractors
The year 2020 number 1nd issue of the quarterly journal, "Bulletin of the Association of Drilling Contractors", is now available
"Bulletin of the Association of Drilling Contractors"


ISSN 2073-9877

The scientific and technical journal, Bulletin of the Association of Drilling Contractors, is listed by the Higher Attestation Commission of the RF Ministry of Education and Science as one of the leading refereed journals and publications that feature main scientific results of doctoral and candidates dissertations.


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"REPORTER of the Association of Drilling Contractors" N 2, 2012

Application of cement slurries containing gas blocking agents for the cementing of casings in environments with abnormally high formation pressure and high temperatures.
Beley, Ivan I. – Cand.Tech.Sci., senior scientific employee, well cementing department, LLC “TyumenNIIgiprogaz”, info@tngg.info
Kuyabin, Andrey G. – head of cementing slurries laboratory , LLC “TyumenNIIgiprogaz”, info@tngg.info
Marinin, Valery I. – Cand.Tech.Sci., deputy general director and chief geologist, LLC “Gazprom dobycha Urengoy”, urengoigazprom@ugp.gazprom.ru
Khubatulin, Ravil M. – engineer 1st grade, well drilling department,  LLC “Gazprom dobycha Urengoy”, urengoigazprom@ugp.gazprom.ru
Lazarev, Vladimir B. – deputy head of operations, CCS branch, LLC “Gazprom burenie”, mail@burgaz.ru
Ivanishin, Mikhail A. – first deputy director, chief engineer, Urengoy Burenie branch of LLC “Gazprom burenie”, mail@burgaz.ru
Kazantsev, Vladimir V. – head of department, OJSC NTF “Efiry Tsellulozy”, info@efcell.ru
Antonenko, Denis V. – head of well cementing department, LLC “Service Centre SMB”, mail@sbmpost.ru

Key words: cement slurry, permeability blocker, casing, cement job, overpressure.
The article reviews the issues of cement jobs in exploration wells drilled in HPHT gas-bearing formations. To prevent gas migration during casing string cementing, various compositions of cement slurries furnished with chemical permeability blockers. Given low fluid loss, these chemicals provide for short cement gellation period and speedy structurization in the course of cement hardening. Field tests of cement slurries complete with chemical gas blocker were run while running cement job on 140 mm production casing in exploration well No. 614 in Yen-Yakha area (4,070 m setting depth). Combined with other engineering solutions (e.g., mixing total cement volume on the surface, additional backpressure generation for the duration of bottomhole cement portion gellation, etc.) cement systems with enhanced permeability blocking capacity proved reliable means of prevetion of WOC gas migration.

RUS
ENG
   
 

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The Journal Reporter of the Association of Drilling Contractors - 2020
Published by: The Association of Drilling Contractors