Oil prices have dropped more than 21 per cent since the start of November, just months after analysts started speculating about the possibility of a return to $US100 a barrel oil.

The impact on Aussie oil stocks is likely to be delayed as right now the market for oil small caps is vibrant, thanks to multiple positive quarterlies based on July-September oil prices.

Only a handful witnessed a share price fall over the last month and almost half are seeing double-digit gains.

>> Scroll down for a list of who’s who in ASX oil.

The real impact is likely to come once the December quarter results begin to roll in.

Right now, the numbers investors are seeing are from the September quarter, when oil prices were hitting record highs.

Eon NRG (ASX:E2E) company secretary Simon Adams admitted as much to Stockhead last week, after their 400 per cent share price rise that came on the back of a revenue bounce for October.

He said they don’t expect November revenue to be quite as good.

What goes up, must come down

Oil prices began to surge from the start of 2018 as production cuts imposed by OPEC on its members a year before began to make themselves felt.

But before the excitement could translate into more cash for exploration in Australia, the price began to fall again.

Since the start of November the two main global oil prices have fallen dramatically.

US-focused West Texas Intermediate was just over $US50 ($69) a barrel on Monday, down 23 per cent this month.

The North Sea oil marker, Brent, was hovering just over $US59 and down 21 per cent this month.

On Friday, crude prices saw their largest one day fall since July 2015.

It’s all on the US

All signs point to the US being the root cause — but not because of President Donald Trump’s threats towards Saudi Arabia to keep prices down.

The price fall is partly due to a surge in US production to record levels, and partly due to lower than expected demand in October.

Energy researcher Wood MacKenzie says US monthly production was 11.65 million barrels a day in September and similar in October, beating Saudi Arabia’s nearly 11 million barrels a day and Russian production of 11.4 million a day.

It’s a flood of oil so large that some analysts are sceptical that quiet plans for the OPEC meeting on December 6 to cut production may not make much difference.

The US Energy Information Administration (EIA) estimates that in 2019, oil production in the US will average 12.1 million barrels a day.

Inventories in the US are rising, too, as lower global demand in October combined with high production by the US and Saudi Arabia.

Inventories in the US grew by 4.9 million barrels in the week to November 16, and by more than 10 million barrels the week before.

Ticker Name Price Nov 26 1 month % change 6 month % change Market Cap
SEA SUNDANCE ENERGY AUSTRALIA LT 6c 57 30 385m
E2E Eon NRG 1.7c 183 70 7.3m
HZN HORIZON OIL 11c 33 33 137m
TPD TALON PETROLEUM 0.3c 33 33 3.8m
AOW AMERICAN PATRIOT OIL & GAS L 2c 27 16 13.5m
TEG TRIANGLE ENERGY GLOBAL 7c 26 45 15,4m
ABL ABILENE OIL AND GAS 0.4c 25 50 1.6m
FDM FREEDOM OIL AND GAS 15c 24 93 156m
BRK BROOKSIDE ENERGY 1c 23 0 12.9m
IPB IPB PETROLEUM 3c 23 -15 5.2m
ATS AUSTRALIS OIL & GAS 35c 21 16 314m
GBP GLOBAL PETROLEUM 3c 20 10 6m
BYE BYRON ENERGY 23c 17 52 159m
KEY KEY PETROLEUM 1c 17 33 8.4m
TDO 3D OIL 9c 14 -29 24.4m
OEL OTTO ENERGY 5c 14 41 93.5m
MAY MELBANA ENERGY 2c 13 -20 28.1m
BUL BLUE ENERGY 6c 12 116 68m
COE COOPER ENERGY 43c 12 -12 680m
EXR ELIXIR PETROLEUM 4c 9 57 11.8m
BRU BURU ENERGY 23c 9 65 99.3m
CVN CARNARVON PETROLEUM 35c 9 -60 417m
FPL FREMONT PETROLEUM CORP 1c 8 50 6.8m
88E 88 ENERGY 2c 6 139 108m
ELK ELK PETROLEUM 6c 3 21 99m
WBE WHITEBARK ENERGY 0.3c 0 117 4.7m
BUY BOUNTY OIL & GAS NL 0.4c 0 50 3.8m
TMK TAMASKA OIL & GAS 0.2c 0 50 3.9m
BAS BASS OIL 0.4c 0 0 10.4m
TAP TAP OIL 9c -1 -18 39m
PSA PETSEC ENERGY 13c -4 -12 42m
HE8 HELIOS ENERGY 15c -7 -59 212m
KPL KINA PETROLEUM 9c -12 -16 33m
PCL PANCONTINENTAL OIL & GAS NL 3c -17 33 16m
WEL WINCHESTER ENERGY 4c -17 29 10m
ICN ICON ENERGY LIMITED 2c -17 4 14m
JPR JUPITER ENERGY 5c -23 26 8m
OEX OILEX 1c -33 -50 1.4m
LKO LAKES OIL NL 0.2c -50 50 61m