Qualitative coring in rocks of all categories of difficulty in coring
Ease of assembling and extracting the core, the possibility of equipping shells with additional units
Increased core diameter provides an increase in the information value of the sample and its quality

Preview

“BURINTEKH”, Ltd core bits allow for high-quality coring in rocks of all categories of core sampling difficulty.

Benefits and Features:

  • Well diameter from 93 mm to 311.2 mm.
  • Increased core recovery length per run - up to 270 meters (with standard core recovery).
  • Increased core diameter - 45; 52; 67; 80; 100; 101.6; 110; 133 mm - provides an increase in the core information value and its quality.
  • Possibility of equipping barrels with additional units - increasing the core recovery and its information value, reducing the number of jams.
  • Own design - ease of assembly and core extraction.
  • A wide range of core bits of own production (PDC/impregnated/combined/TSP)

Core barrels “VOSTOK”

Barrels “VOSTOK” designed for heavy drilling conditions, strong vibrations, complex rock cross-sections, high temperatures and pressures. Core barrels “VOSTOK” have reinforced tool joints, highly resourceful hanger and reinforced core catchers. Core barrel can be equipped with additional sections.

Core barrels “SIBERIA”

Core barrels CBS 6 ¾ x 4 (Core barrel Siberia) and CBS 4 ¾ x 2 5/8 were designed in accordance with the international requirements for core barrels. Reliable systems for coring with a long life. Allow coring in various rocks.

The line of core barrels “Siberia” worthy competes with the best world analogues.


Characteristics

Name

Standard core length, mm

Core diameter using telescopic tubes, mm

Standard core length per 1 run, m (qty of sections)

Max core length per 1 run, m (qty of sections)**

Core bita diameter, mm

СК-89/45.2/5

45

-

10 (2)

10 (2)

104,8…121

СК-109/52.2/5

52

-

10 (2)

10 (2)

121…142,9

СК-109/67"VOSTOK".3/6

67

-

18 (3)

18 (3)

121…142,9

СК-133/80"VOSTOK".2/9

80

67

18 (2)

54 (6)

138,1…165,1

СК-185/100"VOSTOK".2/9

100*

100

18 (2)

270 (30)

212,7…220,7

СК-203/133"VOSTOK".2/9

133

100

18 (2)

270 (30)

269,9…311,2

CBS 4 3/4"х 2 5/8" "Siberia"

66,7

-

18 (2)

54 (20)

138,1…165,1

CBS 6 3/4"х 4" "Siberia"

101,6

101,6

18 (2)

270 (30)

212,7…220,7

* Possible barrel upgrading for core 101,6 and 110mm

** When upgrading barrel with additional mid sections

Documentation

Reviews

  • At the facilities of Ufa subsidiary "RN-Drilling", was successfully performed core recovery using the SK-195/100 core barrel. The application of the technology made it possible to increase the core recovery rate and reduce the number of round-trip operations.

  • For the first time at the facilities of NSH ASIA DRILLING LLC, SK-136/80 "TRIAS" core barrel produced by “BURINTEKH”, Ltd was successfully used.

  • Feedback from ROSPAN INTERNATIONAL on the performance of coring services: 13 exploratory wells were successfully drilled with the provision of a range of technological services, more than 1800 meters of core were recovered.

  • At the facilities of LLC "Rospan-International" the engineering and technological service “BURINTEKH”, Ltd performed coring services using coring equipment of its own production. The work was done with high quality, without deviations.

  • For the first time coring tools produced by “BURINTEKH”, Ltd was used at the facilities of the Urengoy Burenie branch of Gazprom Burenie LLC. Equipment and services ensured high quality and focus on improving the efficiency of well construction.

  • A record result was achieved in terms of the mechanical drilling speed - 0.64 m/h (core bit 152/80 B 12121 AM.31 and core barrel SK-127/80-02).

  • At the facilities of Bashneft-Drilling LLC, the engineering and technological service of “BURINTEKH”, Ltd performed coring services in a horizontal well using coring equipment of its own production. The work was done with high quality, without deviations.

  • Two wells were drilled at the facilities of Rospan-International LLC. The equipment and services rendered by “BURINTEKH”, Ltd ensured acceptable quality, the work was carried out on time.

  • At the facilities of OAO NK Rosneft were performed isolated core recovery operations. The work was completed on time and with high quality.

  • Feedback from Irkutsk subsidiary RN-Burenie LLC on coring: 386 m were drilled with coring, core recovery was 100%. Coring equipment produced by “BURINTEKH”, Ltd can be used in the future.

  • Feedback from BSK GRAND LLC on coring at an exploration well: 111 m were drilled with coring, core recovery was 100%. Coring equipment produced by “BURINTEKH”, Ltd can be used in the future in the construction of wells with core recovery.

Publications

  • Design and comparative analysis of dynamic sealing elements used in drilling tools

  • An integrated approach to the coring process is the key to success!

  • Isolated Core Recovery in Surgutneftegaz with “BURINTEKH”, Ltd Coring tools

  • Development of coring equipment and technology

Patents

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