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 / Core selection and quality

Core selection and quality

The exploration work efficiency and the reliability of results will be higher if the drilled core has the necessary information.
Record-breaking technologies
79 core meters in one run!
In October 2012, a Russian record was set at the well no. 161, pad no. 11 of the V-Salymanskogo field. During a 15-hour run, a string core (78.93 m) was drilled and brought to the surface with a 100% return.
6 основных этапов работ по керну:
1
Научно-техническое обеспечение комплекса НИОКР и услуг
2
Поставка оборудования и материалов
3
Проведение работ на скважине
4
Laboratory studies of the physical core features
5
Well logging core data analysis and comprehensive interpretation
6
Report design and defense

We Offer 3 Sets of Services

Limited
3 work stages
  • scientific and technical support of the R&D complex and services
  • providing with equipment and materials
  • well work
Basic
6 work stages
  • scientific and technical support of the R&D complex and services
  • providing with equipment and materials
  • well work
  • laboratory studies of the physical core features
  • well logging core data analysis and comprehensive interpretation
  • report design and defense
Full
7 work stages
  • scientific and technical support of the R&D complex and services
  • providing with equipment and materials
  • well work
  • laboratory studies of the physical core features
  • well logging core data analysis and comprehensive interpretation
  • report design and defense
  • additional research

Equipment

The main technical features of core barrels parameters (according to tu 3664-031-27005283-98)
Barrel label KI 114/67 KI 4.1. 127/80 KI 5.1. 127/80 KI 7.1. 127/80 KI 2.2. 172/100 KI 2.1. 172/100 KI 3.1. 172/100 KI 6.1. 172/100 KI 7.1. 172/100 KI 2.2. 195/100 KI 2.1. 195/100 KI 3.1. 195/100 KI 5.1. 195/100 KI 6.1. 195/100 KI 7.1. 195/100 KIS 168/100 KIS 127/80
Min drilling bit diameter (in mm) 120,0 138,1 138,1 138,1 187,3 187,3 187,3 187,3 187,3 187,3 212,7 212,7 212,7 212,7 212,7 212,7 142,9
212,7 212,7 212,7 212,7 212,7 212,7 215,9
Barrel sections number (max) 1 1 1 1 2 1 1 1 1 2 1 1 1 1 1 6 3
Barrel length (in m) 8 8 8 8 14,6 8 8 8 8 14,4 7,6 7,8 7,8 7,8 7,8 37,5 19,5
Core string length in one run (in m) 6,5 6,75 6,5 6,5 13 6,5 6 6 6 13 6,5 6 6 6 6 36 18
Core orientation sampling possibility + + + + +
Sampling into fiberglass receiver possibility + + + + + + + + + + + + +
Inclined and horizontal well sections coring possibility + +
Suspension type Маслонаполненная, герметичная, на подшипниках качения
Drilling method Роторный и с применением винтового двигателя
Mass (in kg) 250 300 300 300 1500 6,540 560 570 560 1165 680 700 700 710 700 2865 888

Additional Information

  • The core samplers are equipped with centralizers. The diameter is selected by the drilling bit diameter.
  • The thread of the lower sub can be changed when using special drilling bits.
  • For weakly cemented rocks core sampling, KIM-195/100 barrels can be additionally equipped with plastic cut-out core receivers.
  • The KIM operation practically does not differ from the technology of coring with the Nedra shell, which does not require the adaptation of the drilling crew to coring using the isolation technology. The difference is in the KIM preparation. Before lowering the barrel, the cavity of the core receiver is filled with an insulating agent.
  • You can find KIM operating steps in Passports and Operation Manuals.

Methodological and Regulatory Base for Work Maintenance

The isolation technology performing the procedure is regulated by the Methodological Guide for the Isolated Core Selection and Analysis, co-authored by the Tyumen research and production enterprises SibBurMash, SibCore, and Tyumengeofizika.

The guidelines have been approved and recommended by the following departments and organizations:

  • State Reserves Commission under the Ministry of Natural Resources of the RF;
  • Central Development Commission under the Ministry of Energy of the RF;
  • Federal Mining and Industrial Inspectorate of Russia;
  • The Technical Committee for Standardization for Geological Study of Subsoil;
  • The subsection of R&D scientific and technical cooperation of the Ministry of Natural Resources of Russia.

OOO SibBurMash is a developer and manufacturer of a core barrel range. SibBurMash has the Gosgortekhnadzor of Russia licenses:

  • to design technological systems, equipment, units, and mechanisms for drilling and oil production;
  • to manufacture blowout protection equipment, technological equipment for well drilling, and oil/gas production;
  • to carry out activities for "...scientifically based recommendations implementation, technological regulations, technological systems, equipment and mechanisms of exploration and production wells construction and operation for oil, gas, thermal waters, and underground gas storage facilities.".
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