0000950146-01-000039 SC 13G 1 20010214 BASIN EXPLORATION INC 0000827795 1311 841143307 DE 1231 SC 13G 34 005-42629 1543848 370 SEVENTEENTH ST STE 1800 DENVER CO 80202 3036858000 370 SEVENTEENTH STREET SUITE 1800 DENVER CO 80202 STATE STREET RESEARCH & MANAGEMENT CO //MA/ 0000924355 133142135 DE 1231 SC 13G ONE FINANCIAL CENTER 30TH FLOOR BOSTON MA 02111 6173571200 ONE FINANCIAL CENTER 30TH FLOOR BOSTON MA 02111-2690 SC 13G 1 0001.txt