Report 1507 - Report of Seismic Operations, Chilcotin Area, BC

by GEO-X Surveys Ltd.

October 1970

The Chilcotin Project is located 130 miles west of Williams Lake, British Columbia on the Bella Coola road.

Hudson's Bay Oil and Gas Company Limited "VIBROSEIS" Party No. 2 recorded in five test locations during April and May 1970, under the supervision of Geophysicist A.J. Ferworn and Party Chief D. Chorney.

This project is located in the Interior Plateau region of British Columbia. No seismic recordings have previously been attempted in this area; consequently a great deal of testing was necessary to establish recording parameters. These tests included an expanded spread, interference tests, sweep and effort comparisons and several miles of CDP recording.

There are two abandoned wells north and east of the block. The H.B. Redstone c-75-A bottomed at 4290 feet in basalt and the Honolulu Nazko a-4-L bottomed at 10,864 feet in basement rock. Neither well had any sonic logs for velocity control.

Test Site A (Redstone well) was located along a river bank since it was the only accessible straight section of road near the H.B. Redstone well.

Similarly, Test Sites C (Kleena Kleene) and E (north of Kleena Kleene) were along surface drainage channels.

Test Sites B (South of Tatla Lake) and D (West of Chilanko Forks) were along gravel ridges. These may vary in thickness resulting in static variations in the data.

The Chilcotin Block covered four map sheets:

1. Chilanko Forks
2. Tatlayoko Lake
3. Chantslar Lake
4. Razorback Mountain

Seismic Operation Report ( 7.76MB)