Montana oil and mining journal. [volume] (Great Falls, Mont.) 1931-1953, 1937-11-13

the presence of certain iron and alumni
UNI compounds. The compounds are
soluble in a relatively strong acid solu-
ton, but in the almost neutral spent
acid solution resulting from the reaction
Of the acids with the limestone they will
be appropriated as insoluble ferric hy-
droxide and aluminium hydroide. These
precipitates are colloidal and their pre-
cipitation is accompanied by an increase
in volumes making them fairly effective
plugging agents. Percentages of iron
found in the formation may make for
the success or failure of the chemical
treatment.
According to Dowell, the most feasible
way to eliminate possible difficulties of
this type is to withdraw the treating So
luton from the formation before il is
neutralized below the point at which
precipitation of the products takes place.
That time element must be pre-determin-
ed in the laboratory
The industry will watch with interest
the acidization of the Fulton-Thompson
NO 2 well. His No. 1 well had a larger
showing of oil than any other in the
Ramrock high gravity oil pool 1t was
treated with 1000 gallons of hydrocholor-
ic acid and shot with nitro glycerin. IN
stead of being made into big producer.
It dried up. Only with the ablest of
handling was it brought back to its ap-
proximate initial production. The No.
2 well has a similar showing of oil max
ing small commercial well as it stands.
1t vii not be treated until spring or until
market is available but the result Of
a different method of treatment will be
watched with keen interest
Recently we learned of a patented pro
cess whereby soap is introduced in oil
wells tn hold ho h h.
allowing oil to drain into the hole. we
know of none who has tried this method
IN kevin-Sunburst where water is a prob
lem in the East pool. That pool has
produced around $14,0O0,O0O worth of
OIL so acid has in some instances deyel-
oped more water than oil, giving rise to
a problem that hasNnot been fully solved.
The use of 'jeMH has been most effective
In this district, inasmuch as this sub
lance close up the old flow channels and
forces the acid to open up new porous
areas in which oil concealed. Where oil
occurs in lime vugs and cavities of this
Sort acid is about the only method where
by this oil can be released. The prob
lem of holding back water during this
cleanup" process is yet to be solved.
OF greatest Importance to us, as royal
ty investors, is the expansion of the
productive area of Kevin-Sunburst field
by the use of acid The older areas,
such as the East pool. are of little in
terest so far as investment is concerned
The new areas, specially the western part
of tn field, offer as great opportunity as
a new oil field.
We saw in the completion Of the Pfajbe
Engleking-Enneberg producer, three
miles west of former production, an ex-
ample of what may be expected from acid.
Here is new oil field, with no loss of
pressure or drainage. With the produc-
ton history of the older parts of the
field to guide us, we can make invest
ments today with far greater safety and
assurance than ever before in our his
tory. Abandoned dry holes" on the
outskirts of the field are today sign
boards pointing toward greater wealth
than the pioneer opportunities afforded.
Where there was showing of oil at the
top of the lime, there is the possibility
Of another Enneberg producer that is to-
day rated as a hundred barrel well.
This opportunity is made possible by
the science of acidization. So far as we
can see, there are limitless possibilities
for investors who can grasp the signifi-
canoe of what has happened and apply it
to few well chosen investments head of
the drill