Part 8Oil activities
Chapter 7Reduction of supplementary charge for certain new oil fields
Interpretation
349AF7“Additionally-developed oil field”
1
In this Chapter an oil field is an “additionally-developed oil field” if—
a
a national authority has authorised a project described in an addendum to the consent for development for the oil field, and
b
the project meets such conditions as may be specified in an order made by the Commissioners for Her Majesty's Revenue and Customs.
2
In this section—
“consent for development”, in relation to an oil field, does not include consent which is limited to the purpose of testing the characteristics of an oil-bearing area,
“development”, in relation to an oil field, means winning oil from the field otherwise than in the course of searching for oil or drilling wells, and
“national authority” means—
- a
the Secretary of State, or
- b
a Northern Ireland department.
- a
3
An order under this section may include provision having effect in relation to times before it is made, provided that it does not increase any person's liability to tax.
4
No order may be made under this section unless a draft of the statutory instrument containing it has been laid before and approved by a resolution of the House of Commons.
350F5“New oil field”
1
In this Chapter “ new oil field ” means an oil field—
a
which is a qualifying oil field, and
b
whose development (in whole or in part) is authorised for the first time on or after 22 April 2009.
2
If all assets of an oil field which are relevant assets have been decommissioned, there is to be ignored for the purposes of subsection (1)(b) any authorisation in respect of that oil field which occurs before that decommissioning.
3
Sub-paragraphs (2) to (9) of paragraph 7 of Schedule 1 to OTA 1975 apply for the purpose of determining whether relevant assets of an oil field are decommissioned as they apply for the purpose of determining whether qualifying assets of a relevant area are decommissioned.
4
For the purposes of this section, an asset is a relevant asset of an oil field if—
a
it has at any time been a qualifying asset (within the meaning of the Oil Taxation Act 1983) in relation to any participator in the field, and
b
it has at any time been used for the purpose of winning oil from the field.
351“Authorisation of development of an oil field”
1
In this Chapter a reference to authorisation of development of an oil field is a reference to a national authority—
a
granting a licensee consent for development for the field,
b
serving on a licensee a programme of development for the field, or
c
approving a programme of development for the field.
2
In this section—
“consent for development”, in relation to an oil field, does not include consent which is limited to the purpose of testing the characteristics of an oil-bearing area,
“development”, in relation to an oil field, means winning oil from the field otherwise than in the course of searching for oil or drilling wells, and
“national authority” means—
- a
the Secretary of State, or
- b
a Northern Ireland department.
- a
352“Qualifying oil field”
In this Chapter “qualifying oil field” means an oil field that is, on the authorisation day—
a
a small oil field,
b
an ultra heavy oil field, F15...
c
an ultra high pressure/high temperature oil field,
F16d
a large deep water oil field,
e
a large shallow water gas field, or
f
a deep water gas field.
353“Small oil field”
1
In this Chapter “small oil field” means an oil field which has reserves of oil of F147,000,000 tonnes or less.
2
For the purposes of this section and section 356(2)—
a
the amount of reserves of oil which an oil field has is to be determined on the authorisation day, and
b
1,100 cubic metres of gas at a temperature of 15 degrees celsius and pressure of one atmosphere is to be counted as equivalent to one tonne.
354“Ultra heavy oil field”
1
In this Chapter “ultra heavy oil field” means an oil field with oil at—
a
an API gravity below 18 degrees, and
b
a viscosity of more than 50 centipoise at reservoir temperature and pressure.
2
For that purpose API gravity, in relation to oil, is the amount determined by the following calculation—
where G is the specific gravity of the oil at 15.56 degrees celsius.
355“Ultra high pressure/high temperature oil field”
In this Chapter “ultra high pressure/high temperature oil field” means an oil field with oil at—
a
a pressure of more than F1862 bar in the reservoir formation, and
b
a temperature of more than F2166 degrees celsius in the reservoir formation.
355AF9“Large deep water oil field”
1
In this Chapter “large deep water oil field” means an oil field that meets conditions A to C.
2
Condition A is that the field was authorised for the first time on or after 21 March 2012.
3
Condition B is that the field has reserves of oil of—
a
25,000,000 tonnes or more, but
b
less than 55,000,000 tonnes.
4
Condition C is that the depth of the sea above the field is greater than 1,000 metres.
5
For the purposes of this section and section 356(4)—
a
the amount of reserves of oil which an oil field has is to be determined on the authorisation day,
b
1,100 cubic metres of gas at a temperature of 15 degrees celsius and pressure of one atmosphere is to be counted as equivalent to one tonne, and
c
the depth of the sea above an oil field is to be measured at the lowest astronomical tide from the water surface to the lowest point of the natural sea bed at the location of the primary subsea manifold or the first development well, whichever is the deeper.
355B“Large shallow water gas field”
1
In this Chapter “large shallow water gas field” means an oil field that meets conditions A to D.
2
Condition A is that the field was authorised for the first time on or after 25 July 2012.
3
Condition B is that more than 95% of the reserves of oil which the field has consist of gas.
4
Condition C is that the depth of the sea above the field is less than 30 metres.
5
Condition D is that the amount of reserves of gas which the field has, or, where there are one or more oil fields related to the field, the total amount of reserves of gas which the field and those related oil fields together have, is—
a
10 billion cubic metres or more, but
b
less than 25 billion cubic metres.
6
For the purposes of subsection (5) and section 356(5), an oil field is “related” to another oil field if—
a
the field meets conditions A to C, and
b
the authorisation day for each oil field is the same.
7
For the purposes of this section and section 356(5)—
a
the amount of reserves of oil which an oil field has is to be determined on the authorisation day,
b
1,100 cubic metres of gas at a temperature of 15 degrees celsius and pressure of one atmosphere is to be counted as equivalent to one tonne, and
c
the depth of the sea above an oil field is to be measured at the lowest astronomical tide from the water surface to the highest point of the natural sea bed at the location of the primary subsea manifold or the first development well, whichever is the shallower.
355C“Deep water gas field”
1
In this Chapter “deep water gas field” means an oil field that meets conditions A to C.
2
Condition A is that more than 75% of the reserves of oil which the field has consist of gas.
3
Condition B is that the depth of the sea above the field is more than 300 metres.
4
Condition C is that the length of the planned route of the primary pipe-line, or pipe-lines, to be used for transporting gas from the field to the relevant infrastructure is more than 60 kilometres.
5
For the purposes of subsection (4)—
a
the length of the planned route is to be determined on the authorisation day,
b
“pipe-line” has the same meaning as in the Pipe-lines Act 1962 (see section 65 of that Act),
c
“the relevant infrastructure”, in relation to an oil field, means any pipe-line or gas processing facility which is used by, or is intended to be used by, another oil field whose development was authorised before the authorisation day for the oil field, and
d
“gas processing facility” has the meaning given by section 90(1) of the Energy Act 2011 .
6
For the purposes of this section—
a
the amount of reserves of oil which an oil field has is to be determined on the authorisation day,
b
1,100 cubic metres of gas at a temperature of 15 degrees celsius and pressure of one atmosphere is to be counted as equivalent to one tonne, and
c
the depth of the sea above an oil field is to be measured at the lowest astronomical tide from the water surface to the lowest point of the natural sea bed at the location of the primary subsea manifold or the first development well, whichever is the deeper.
356“Total field allowance for a new oil field”
1
For the purposes of this Chapter, the total field allowance for a new oil field is—
a
in the case of a small oil field, the amount determined in accordance with subsection (2),
b
in the case of an ultra heavy oil field, £800,000,000, F10...
c
in the cases of an ultra high pressure/high temperature oil field, F3the amount determined in accordance with subsection (3),
F12d
in the case of a large deep water oil field, the amount determined in accordance with subsection (4),
e
in the case of a large shallow water gas field, the amount determined in accordance with subsection (5), and
f
in the case of a deep water gas field, the amount determined in accordance with subsection (6).
F132
The total field allowance for a small oil field is—
a
if the field has reserves of oil of 6,250,000 tonnes or less, £150,000,000, and
b
in any other case (where the oil field has reserves of more than 6,250,000 tonnes but not more than 7,000,000 tonnes) the following amount—
where X is the amount of the reserves of oil (in tonnes) which the field has.
F43
The total field allowance for an ultra high pressure/high temperature oil field is—
a
£800,000,000, if the temperature of oil in the reservoir formation is more than 176.67 degrees celsius, and
b
if the temperature of oil in the reservoir formation is more than 166 degrees celsius but not more than 176.67 degrees celsius, the sum of £500,000,000 and an amount calculated as follows—
where X is the number of complete hundredths of a degree celsius by which the temperature of oil in the reservoir formation exceeds 166 degrees celsius.
F114
The total field allowance for a large deep water oil field is —
where X is—
- a
in a case where the amount of the reserves of oil which the field has is 40,000,000 tonnes or less, 40,000,000,
- b
in any other case (where the oil field has reserves of more than 40,000,000 tonnes but not more than 55,000,000 tonnes) the amount of the reserves of oil (in tonnes) which the field has.
- a
5
The total field allowance for a large shallow water gas field is—
where—
R is the amount of the reserves of gas (in billion cubic metres) which the field has,
T is—
the amount of the reserves of gas (in billion cubic metres) which the field has, or
in a case where there are one or more oil fields related to the field, the total amount of reserves of gas (in billion cubic metres) which the field and those related oil fields together have, and
X is—
in a case where T is 20 or less, 20, and
in any other case (where T is greater than 20 but less than 25), T.
6
The total field allowance for a deep water gas field is—
where—
Y is—
- a
£800,000,000, or
- b
in a case where two or more deep water gas fields share the same authorisation day, £1,600,000,000 divided by the total number of those deep water gas fields, and
- a
D is—
- a
where the length of the planned pipe-line route is more than 60 but less than 120 kilometres, that length (in kilometres), or
- b
in a case where the length of the planned pipe-line route is 120 kilometres or more, 120.
- a
7
In subsection (6) “the planned pipe-line route”, in relation to a deep water gas field, means the planned route of the pipe-line (or pipe-lines) to be used for transporting gas from the field as mentioned in section 355C(4).
8
If an oil field falls within more than one of the descriptions of oil field listed in section 352 (“qualifying oil field”), then for the purposes of this section the field is to be regarded as being of the description that produces the greatest total field allowance for that field.
357Other definitions
In this Chapter—
“adjusted ring fence profits”, in relation to a company and an accounting period, means the adjusted ring fence profits that would (if this Chapter were ignored) be taken into account in calculating the supplementary charge on the company under section 330(1) for the accounting period,
“authorisation day”, in relation to a new oil field, means the day when development of the field is authorised F6as mentioned in section 350(1)(b),
F8“eligible oil field” means an oil field which is an additionally-developed oil field or a new oil field,
“initial licensee”, in relation to a new oil field, means a company that is licensee in the field on the authorisation day,
“licensee” has the same meaning as in Part 1 of OTA 1975, and
“relevant income”, in relation to a new oil field and an accounting period of a company, means production income of the company from any oil extraction activities carried on in the field that is taken into account in calculating the company's adjusted ring fence profits for the accounting period.