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Codex Energy Natural Gas
The Gas Flare window: 5 energy and tank bars, 6 value, status and redstone lines, 7 buttons (redstone mode, telemetry, codex).
Natural gas is a fuel gas you do not make but extract: from gas fields deep below the world, with a Gas Derrick. You find the fields with the 
Gas Prospector. Natural gas carries twice the heat of syngas and needs nothing but a little energy to get out of the ground. The derrick is a tier I plant.
The world is divided into regions of 128 × 128 blocks, counted from block 0 (one region runs from x 0 to 127, the next from 128, the one to the west from −128 to −1, the same along z). A region holds at most one field, over its full height.
| Field | Share of the regions | Content | Highest rate |
|---|---|---|---|
| none | the rest | – | – |
| Small field |
terrain.naturalGasSmallFieldChance (default 0.32, allowed 0.0–1.0) |
5,000,000 to 15,000,000 mB | 120 mB/t |
| Large field |
terrain.naturalGasLargeFieldChance (default 0.08, allowed 0.0–1.0) |
50,000,000 to 150,000,000 mB | 480 mB/t |
- Nothing is generated in the world. Whether a region has a field, its kind and size follow from the world seed, the dimension and the region's position alone. No blocks are placed and nothing is searched, so the fields work with every world generator, and the same seed always gives the same fields.
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Dimensions: only the dimensions in
terrain.naturalGasDimensions(default minecraft:overworld, allowed comma-separated ids) have natural gas. -
Content and rate scale with
terrain.naturalGasFieldSizeMultiplier(default 1.0, allowed 0.01–100.0) andterrain.naturalGasFieldRateMultiplier(default 1.0, allowed 0.01–100.0).
Pressure and depletion A field gives the most at the start. Its rate falls in a straight line with what is left, down to a quarter (0.25) of the highest rate when it is nearly empty: rate = highest rate × (0.25 + 0.75 × share left).
A field never runs completely dry. Once its content is used up, the rate keeps falling slowly: a quarter of the highest rate times content / extracted, at least 1 mB/t. A field that has given twice its content still gives an eighth of its highest rate.
- What was taken stays taken. The extracted amount of each region is stored with the world (per dimension), not in the derrick. Breaking or rebuilding a derrick changes nothing.
- One field, one rate. Every derrick in the same region takes from the same field rate. Two derricks on one field share it; they do not double it.
A hand tool that needs no energy and never wears out. Right-click any block with it; it reports the field of the region that block lies in, as chat messages:
| Message | Meaning |
|---|---|
| Small field here: … % left (…), … now | Kind of the field, the share and amount left, and the field's rate right now (shared by all derricks of the region). |
| No natural gas in this region | This region has no field. |
| Nearest other field: north-east | The direction of the nearest field among the eight neighbouring regions. |
| No field in the neighbouring regions either | Neither this region nor its neighbours have gas. |
| Region from …, … to …, … | The x and z coordinates of the region's corners: build the derrick inside them. |
| There is no natural gas in this dimension | The dimension is not in the server's list. |
Finding a field for the first time earns an advancement.
| Compass | ||||
| Iron Ingot | Redstone Dust | Iron Ingot | → Gas Prospector |
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| Iron Ingot |
- It extracts natural gas from the field of the region its controller stands in.
- Its own rate grows with the height of its mast: 60 mB/t at the lowest height of 6 blocks, 40 mB/t more for every further block, up to 12 blocks.
- What it really gets is limited by the field's rate, which all derricks of the region share, by room in its gas tank and by its energy.
- Extraction costs energy: 1 E for every 2 mB.
| Mast height | Derrick capacity (mB/t) | Energy (E/t at full rate) |
|---|---|---|
| 6 | 60 | 30 |
| 8 (example) | 140 | 70 |
| 10 | 220 | 110 |
| 12 | 300 | 150 |
A small field (at most 120 mB/t) is used fully by a derrick of height 8; a large field (480 mB/t at the start) needs two tall derricks in the same region.
Shown size: 3 wide, 8 high, 3 deep (adjustable: Height 6–12).
One example of many: within the rules on this page, size and arrangement are up to you; the Build Projector shows the plan in every allowed size.
| Key | Block | Count | |
|---|---|---|---|
 |
A | Derrick Frame | 63 |
 |
E | Drill Pipe | 5 |
 |
D | Energy Input Hatch (Tier 1) | 1 |
 |
B | Gas Output Port | 1 |
 |
C | Wellhead | 1 |
|
0 | Gas Derrick Controller | 1 |
Each picture adds one layer, from the bottom up; the newest layer is bright. The controller wall faces you on the left.
Parts in this step: Derrick Frame (A) ×9
Parts in this step: Derrick Frame (A) ×5, Energy Input Hatch (Tier 1) (D) ×1, Gas Derrick Controller (0) ×1, Gas Output Port (B) ×1, Wellhead (C) ×1
Place this layer 5 times on top of each other.
Parts in this step: Derrick Frame (A) ×8, Drill Pipe (E) ×1
Parts in this step: Derrick Frame (A) ×9
- Size: 3 wide and 3 deep, 6 to 12 high.
-
Shell: Derrick Frame on all edges and walls;
Inspection Hatches may replace wall blocks. -
Mast: the middle column of the inside: a Wellhead on the lowest layer, Drill Pipe above it up to the roof.
- Controller: in the middle of a side face, front facing out, with the mast directly behind it. The example has it in the lowest layer of the inside, beside the wellhead.
-
Ports: Gas Output Port (natural gas out) and an Energy Input Hatch of any tier (energy in), in the middle column of a side face or in the middle of the roof. A tier 1 hatch with 1,000 E/t is more than enough.
- Status: "Extracting", "Idle", "No natural gas in this region", "No energy", "Output full" or the structure error.
- Gas field: "Small field", "Large field" or "No field in this region".
- Field content: the gas left in the field; Field pressure: the share left.
- Field rate: what the field gives now (shared by the region's derricks); Derrick capacity: the derrick's own highest rate.
- Extraction: what it took in the last tick.
- Bars for Natural gas and Energy.
- Energy comes in through the Energy Input Hatch, natural gas must be pulled from the Gas Output Port.
- With a full gas tank the derrick waits ("Output full") and uses no energy.
| Message | What to do |
|---|---|
| The controller must sit in a wall, front facing out | Put the controller into the middle of a side face, front outwards. |
| Structure too small (…) / Structure too large or not closed near … | Build 3 × 3 and 6 to 12 high, closed all round. |
| Wrong block at … (expected: Derrick Frame) | Only Derrick Frame on the edges. |
| Wrong block at … (expected: Wellhead) / (expected: Drill Pipe) | The wellhead goes on the lowest layer of the mast, drill pipe everywhere above it. |
| Missing parts: Wellhead ×1 | Place the wellhead. |
| Port not allowed here: … | Only the Gas Output Port and Energy Input Hatches work. |
| Redstone Dust | ||||
|
Redstone Comparator | |
→ Gas Derrick Controller |
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Lever | |
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→ Wellhead |
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→ Drill Pipe |
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| Iron Bars | → Derrick Frame |
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The derrick keeps its gas and energy in the controller; breaking the controller loses them. The field's content is not affected.
While the derrick extracts, the drill pipe blocks are hidden and a turning drill string is drawn in their place, faster at a higher rate. A flare burns on top while gas flows. The first gas earns an advancement.
The Gas Flare burns surplus fuel gas without using its energy, so a derrick or gasifier never backs up when the consumers take less. It takes every gas that burns: natural gas, syngas, hydrogen, also compressed; oxygen, helium, deuterium and tritium are refused.
- Rate: up to 500 mB/t. Its small buffer holds 2,000 mB.
- Pipes: gas goes in on every side.
- Redstone: the > button switches between "Always", "With a redstone signal" and "Without a redstone signal". While it may not burn, the buffer fills and then the flare takes nothing more, so the gas backs up instead of being lost.
- Screen: status ("Burning", "Waiting for gas", "Held by redstone"), redstone mode, the gas in the buffer, Burning (the rate of the last tick), Burnt in total, and a bar of the contents.
- When you break it, it keeps its gas, its mode and its total.
- While it burns, a flame dances on its tip, smoke rises above it and the tip glows.
| Flint and Steel | ||||
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→ Gas Flare |
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Tip
Flare only when needed Set the flare to "With a redstone signal" and put a lever or your own redstone logic next to it. Without the signal it holds its small buffer and lets the gas back up to your consumers; with the signal it burns whatever comes.
Note
What to do with natural gas Natural gas gives 2 HU per mB in an Industrial Boiler, but 8 in a Gas Turbine or a Gas Engine. With a Gas Compressor it becomes compressed natural gas, which gives a quarter more heat in a Gas Turbine.