ABREVIATIONS AND OTHER OIL AND GAS TERMS

Crude Oil and Natural Gas Volumes

Bcf

billion standard cubic feet

bopd

barrels of oil per day

BOE

barrel(s) of oil equivalent

GIIP

gas Initially In Place

Mbbls

thousands of barrels

MMbbls

millions of barrels

MMboe

millions of barrels of oil equivalent with gas being converted
    using a ratio of 6:1

Mcf/d

thousands of standard cubic feet of gas per day

MMcf/d

millions of standard cubic feet of gas per day

OIIP

oil initially in place

Tcf

trillions of cubic feet

Other Oil and Gas Terms

Quad

A UK offshore area normally comprised of 30 Blocks