SEC. 7. Section 30, paragraph (g)
(1) of the National Internal Revenue Code, is hereby amended to read as
follows:
"(g) Depletion of oil and gas wells and
mines:
"(1) In general. — In the case of oil and gas
wells
and mines, a reasonable allowance for depletion or amortization
computed in accordance with the cost depletion method shall be granted
under rules and regulations to be prescribed by the Minister of Finance:
Provided, That when the allowances shall equal the
capital invested no further allowance shall be granted:
Provided, Further,
That after production in commercial quantities has commenced, certain
intangible exploration and development drilling costs (i) shall be
deductible in the year incurred if such expenditures are incurred for
non-producing wells or (ii) shall be deductible in full in the year paid
or incurred or, at the election of the taxpayer, may be capitalized and
amortized, if such expenditures incurred are not producing wells in the
same contract area.
Intangible costs in petroleum operations refer to any cost
incurred
in petroleum operations which in itself has no salvage value and which
is incidental to and necessary for the drilling of wells and preparation
of wells for the production of petroleum:
Provided, That said
cost shall not pertain to the acquisition or improvement of property of a
character subject to the allowance for depreciation except that the
allowances for depreciation on such property, shall be deductible under
this subsection.
Any intangible exploration; drilling and development expenses
allowed
as a deduction in computing taxable income during the year shall not be
taken into consideration in computing the adjusted cost basis for the
purpose of computing allowable cost depletion.