THE QUESTIONNAIRE
A-2.3 Responses
Missing entries are either not applicable or were unknown at the time of the questionnaire.
A-2.3.1 NEDRA Drilling Enterprise
| A. - Equipment available for coring-drilling continental sections for PAGES' purposes | |
| 1. Coring-drilling system | Nedra-Baikal-600 (first dimension given) Nedra-Baikal-2000 (second dimension given, in parentheses) The State Scientific Industrial Enterprise for Superdeep Drilling and Comprehensive Investigations of the Earth's Interior (GNPP Nedra) |
| 2. Location | Yaroslavl, Russia; operated in Lake Baikal |
| 3. Contact person | Dr. B. N. Khakhaev, Dir. General, GNPP Nedra, Svoboda 8/38, Yaroslavl 150000, Russia, E-mail: postmaster@nedra.yaroslavl.su; Tel: +0852-22-23-01; Fax: +0852-32-84-71 Prof. D. Williams, Geological Sciences, Univ. of Columbia, Columbia SC 29208, USA. Tel: +1-803-777-7525, Fax: +1-803-777-6304, E-mail: baikal@epoch.geol.scarolina.edu |
| 4. System description: a) system type |
Single rig and casing system with four (five) coring systems available: hydraulic piston coring tool adapted from ODP advanced hydraulic piston core, conventional rotary coring/drilling, (rotary with a pilot hole), hydropercussion-vibratory system, and hydropercussion-rotary system. |
| b) diameter of core and casing | Multi-tool, cased, wire-line system with aluminum casing, 20 cm iØ |
| c) diameter of liner, type of liner, ... | Core diameter: 56, 80 mm. Transparent liner, 63, 58 (70, 62) mm. Coring tool diameter, 178 (185) mm, core bit diameter, 212.7 mm |
| d) method of extrusion | No extrusion in normal operations; mechanical extrusion possible |
| e) length of core barrels | 2 (6.2, 3.1) m |
| f) extension rods | none |
| g) tripod | Drilling tower is 15 (28) m in height |
| h) power supply, push force | Power supply: 75 (200) kW, 220 V, 66 (140) kW drive motor; load capacity 150 (500) kN |
| i) winch(es) | Winch (5.0 (30) kW) for wire-line retrieval of coring tool |
| j) platform size, raft resistance | Total dimensions: 6 (12) x 18 (50) x 4 (h) m; mounts on a sledge (4 pieces) 3 x 6 m or a 12 x 36 (67) m barge. Core storage: 3 x 6 x 4 m |
| k) crane | Drilling tower used instead of crane |
| l) other | System capable of drilling a wide range of materials, from unconsolidated sediment to crystalline rock; coring and drilling tools available for many conditions |
| B. - Transport of the equipment | |
| 1. Total weight, volume | 300 (3000) kN |
| 2. Portable system, people needed, weight of the heaviest piece | Heaviest piece: 150 (135) kN |
| 3. Equipment transport from lab to working site | Air, rail, or truck |
| 4. Core transport to lab | Cores brought back refrigerated (not frozen) to core storage in Irkutsk |
| C. - Past experience | |
| 1. Location, type of lake, publication | Nehdra-Baikal 600 system: In 1993, drilling off Buguldeika Saddle, southern Baikal, 365 m water depth, 2 100-m holes, over 90% recovery (BDP-93 Baikal Drilling Project Members, 1996). In 1996, 2 holes drilled and cored on Academic Ridge in 333 m water depth, one 200 m and one 100 m, with about 90% recovery |
| 2. Depth performance, sediment penetration | Nehdra-Baikal 600 system coring depth up to 100-300 m and water depth up to 500 m. Nehdra-Baikal 2000 system coring depth up to 1000 m and water depth up to 1000 m |
| 3. Type of surface | Nehdra-Baikal 600 system is adaptable to land, water (on a barge), and ice. Nehdra-Baikal 2000 is designed for a barge on ice |
| D. - Potential of the system | |
| 1. Additional potential achievement (water depth, penetration, ...) | See C2 |
| 2. Working on high and low temperatures and altitudes | Adaptable to most conditions (+40 ·C to -60 ·C). Drilling crew experienced from north of Arctic Circle to Kazakhstan and central Asia. |
| E. - General information | |
| 1. Number of people needed for operation, people with experience | For 24-hour (3 shifts) operation: 12 drillers, 3 engineers, and 2-3 geologists for logging and preliminary description of cores |
| 2. Rotation, orientation for palaeomagnetic studies | Sediment does not appreciably rotate inside the core barrel; orientation is possible |
| 3. Rental cost for equipment, real cost of operation | System is available; cost dependent on local conditions, fuel costs, and other factors, and ranges from 200 to 2,000 USD per m of core |
| 6. Other contributor to be contacted, type of equipment to be included | Dr. L.A. Pevzner, Deputy Director General, Scientific Research Dr. V.V. Kochukov, Section Leader, Equipment and Technology Tel: +0852-32-83-89; Fax: +0852-32-84-71 |
| 7. Major advantages or disadvantages of equipment (technical or other) | Continuous, relatively undisturbed coring in deep water with high rates of recovery. Adaptable to a broad range of conditions |
| 0. TABLE OF CONTENTS |
