CN1451844A - Heat, electricity, CO2 and N2 united supply making method for oil field production - Google Patents

Abstract

A system for providing heat, electric power, CO2 and N2 for oil field to recover petroleum is composed of separator, united supply system, enriching device, and regulation distiributor. The air separating technique is used to separate O2 and N2 from air. The critical or supercritical electric generator using the O2/CO2 and coal as fuel is used for providing electric energy, steam, hot water, CO2 and N2. It can increase the oil output and decrease cost.

Description

A kind of oilfield exploitation heat, electricity,CO 2, N 2The alliance manufacture method

Technical field:

The present invention relates to improve on a kind of field produces recovery ratio technology, particularly a kind of oilfield exploitation heat, electricity, CO₂, N₂The alliance manufacture method.

Technical background:

Thick oil steam drive, CO₂Mixed phase drives, N₂Non-phase-mixing driving is the effective ways of the raising recovery ratio of extensive use, and in order to increase substantially recovery ratio, the oil field needs a large amount of CO₂, N₂, steam and hot water, that use in the minority oil field at present is external import CO₂And N₂Car takes place, shipment or directly deliver to site operation, its cost is very high, has increased labour intensity, and the generation of steam (hot water) need be built a heat injection station specially, and contaminated environment has improved the oil extraction cost, and several gases can not be concentrated generation.

Technical scheme:

The object of the invention is to provide a kind of oilfield exploitation heat, electricity, CO₂, N₂The alliance manufacture method directly provides electricity, CO₂, N₂And steam (hot water), and pass through CO₂, N₂And fuel-economizing joint vapour, realization reduction cost of crude oil production are used in the optimum organization of steam (hot water).

The present invention seeks to realize like this, it by eliminator, co-feeding system, enricher, regulate and distribute device four parts and form, A, air is squeezed in the eliminator, utilize air separation technology with airborne O₂And N₂Separate the N that makes₂Be transported to and regulate and distribute in the device; B, the O that makes₂With portion C O₂Flue gas is mixed in the co-feeding system, with critical or supercritical generating unit, takes O₂/ CO₂Produce the CO that the burning back produces with the fired coal combustion mode₂Be transported to the enricher enrichment, simultaneously co-feeding system produce steam, hot water; CO in C, steam, hot water and the enricher that co-feeding system is produced₂,,, the N that makes in the eliminator₂Deliver to continually and regulate and distribute in the device; D, in regulating and distributing device, according to different reservoir development requirements, provide N₂, CO₂, N₂+ CO₂, N₂+ steam (hot water), CO2+ steam (hot water), N₂+ CO₂+ steam (hot water), 7 kinds of different handling up or displacement mode of steam.

The present invention has been owing to adopted eliminator one end and co-feeding system, enricher, regulate and distribute device and be linked in sequence, eliminator, the co-feeding system other end respectively with regulate and distribute device and directly be connected, with critical or supercritical generating unit, take O₂/ CO₂Combustion system is produced, thereby provides institute's electricity consumption, steam, hot water, CO for oil field development₂, N₂And according to handling up or the difference of displacement mode, different mixed proportions is provided, replaces fuel oil and natural gas with fire coal, fuel-economizing and gas-economizing increases production again, improve the oil field ultimate recovery greatly, reduced the oil extraction cost, alleviated labour intensity, technical flow design is reasonable, simple to operate, be well suited for field popularization application.

Accompanying drawing is a process flow diagram of the present invention.

The present invention is further described below in conjunction with accompanying drawing.

As shown in the figure, the present invention by eliminator, co-feeding system, enricher, regulate and distribute device four parts and form, eliminator one end by transfer tube with co-feeding system, regulate and distribute device and be connected respectively, co-feeding system by transfer tube respectively with enricher, regulate and distribute device and be connected, enricher with regulate and distribute device and be connected, co-feeding system is provided with an outer power supply port, regulates and distributes to be connected to 7 groups on the device and to supply mouth outward; A, at first air is squeezed in the eliminator, airborne O₂And N₂Separate the 92%N that makes₂Be transported to and regulate and distribute in the device; The 90%O that B, eliminator make₂Portion C O with burning back generation from co-feeding system₂Flue gas is mixed in the co-feeding system, with critical or supercritical generating unit, takes O₂/ CO₂Produce the CO that the burning back produces with the fired coal combustion mode₂Content is transported to the enricher enrichment more than 95%, produce steam, hot water and electricity at co-feeding system simultaneously, and electricity is by outer power supply port output; CO in C, steam, hot water and the enricher that co-feeding system is produced₂,,, the N that makes in the eliminator₂Deliver to continually and regulate and distribute in the device; D, in regulating and distributing device, according to different reservoir development requirements, provide N₂, CO₂, N₂+ CO₂, N₂+ steam (hot water), CO₂+ steam (hot water), N₂+ CO₂+ steam (hot water), 7 kinds of different handling up or displacement mode of steam.

Claims (2)

1, a kind of oilfield exploitation heat, electricity, CO₂, N₂The alliance manufacture method, it by eliminator, co-feeding system, enricher, regulate and distribute device four parts and form, it is characterized in that: A, air is squeezed in the eliminator, utilized air separation technology airborne O₂And N₂Separate the N that makes₂Be transported to and regulate and distribute in the device; B, the O that makes₂With portion C O₂Flue gas is mixed in the co-feeding system, with critical or supercritical generating unit, takes O₂/ CO₂Produce the CO that the burning back produces with the fired coal combustion mode₂Be transported to the enricher enrichment, simultaneously the steam that produces at co-feeding system, hot water; CO in C, steam, hot water and the enricher that co-feeding system is produced₂,,, the N that makes in the eliminator₂Deliver to continually and regulate and distribute in the device; D, in regulating and distributing device, according to different reservoir development requirements, provide N₂, CO₂, N₂+ CO₂, N₂+ steam (hot water), CO₂+ steam (hot water), N₂+ CO₂+ steam (hot water), 7 kinds of different handling up or displacement mode of steam.

2, a kind of oilfield exploitation heat according to claim 1, electricity, CO₂, N₂The alliance manufacture method is characterized in that: in the eliminator, and the 92%N that makes₂Be transported to and regulate and distribute in the device; The 90%O that makes₂Portion C O with burning back generation from co-feeding system₂Flue gas is mixed in the co-feeding system; The CO that the burning back produces₂Content 95% is transported to the enricher enrichment.

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