CN203499664U - Device used for extracting shale oil and gas by fracturing and chemical dry distillation of oil shale in-situ vertical shaft - Google Patents
Device used for extracting shale oil and gas by fracturing and chemical dry distillation of oil shale in-situ vertical shaft Download PDFInfo
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- CN203499664U CN203499664U CN201320223668.3U CN201320223668U CN203499664U CN 203499664 U CN203499664 U CN 203499664U CN 201320223668 U CN201320223668 U CN 201320223668U CN 203499664 U CN203499664 U CN 203499664U
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Abstract
The utility model discloses a device used for extracting shale oil and gas by fracturing and chemical dry distillation of an oil shale in-situ shaft. A fracturing burning well and a plurality of leading-out producing wells are located between the ground and an underground oil shale formation; a hydraulic casing sprayer is arranged in a fracturing chamber of the fracturing burning well; cracks in the wall of the fracturing chamber are respectively communicated with oil and gas channels; the exit of each oil and gas channel is the corresponding leading-out producing well; gas-liquid separation devices of the leading-out producing wells are respectively connected with product tanks through oil well pumps, and communicated with a gas power generation assembly by a discharge machine. By installing the fracturing burning well, the leading-out producing wells and accessory equipment, shale oil is extracted in situ underground by utilizing the oil shale; through the chemical heat enhanced treatment process of the shale oil and gas of fracturing and chemical dry distillation, bulk mining of the oil shale is avoided, and environmental pollution brought by dry distillation above the ground is avoided. By utilizing asphaltene and fixed carbon remaining after the dry distillation, the underground continuous dry distillation is realized, and heat is self-sufficient. The device used for extracting the shale oil and gas by fracturing and chemical dry distillation of the oil shale in-situ vertical shaft has the advantages that the investment is small, the operating cost is low, the environmental pollution is small, the resource utilization rate is high, the oil-producing and gas-producing effect is fast, and the like.
Description
Technical field
The utility model discloses and a kind ofly for the destructive distillation of oil shale in-situ vertical shaft pressure break chemistry, extracts shale oil device of air, utilizes the underground in-situ extraction shale oil of oil shale, and the unconventional oil gas energy of petroleum resources deficiency, belongs to oil retorting technique field as a supplement.
Technical background
At present, oil shale can be refined shale oil by retorting technique----artificial petroleum, the natural oil of substituting; Also can utilize its combustion power generation.Under the high situation of current oil price, shale oil refining has good economic benefit, is a most real available large measure that supplements natural oil deficiency; Oil shale generating, to lacking coal province, district has more good economy, environmental protection, social benefit.But traditional development mode is all to take underground mining, shale oil is produced in destructive distillation on the ground, and its shortcoming is a lot:
(1) cost of mining of destructive distillation is on the ground large;
(2) land seizure of destructive distillation on the ground amount is large;
(3) destructive distillation on the ground causes a large amount of land subsidence of mining area;
(4) the residue treatment difficulty after destructive distillation is on the ground large, and bulk deposition causes secondary pollution;
(5) after destructive distillation on the ground, residue is taken away amount of heat, and the heat energy of residue can not utilize, and causes energy waste;
(6) destructive distillation on the ground produces waste gas, sewage environmental pollution exceed standard.
Summary of the invention
The utility model discloses and a kind ofly for the destructive distillation of oil shale in-situ vertical shaft pressure break chemistry, extract shale oil device of air, fundamentally solved above-mentioned shortcoming and problem that underground mining, destructive distillation on the ground bring.
the utility model discloses a kind of for oil shale in-situ vertical shaft pressure break chemistry destructive distillation extraction shale oil device of air, it is characterized in that:
1) pressure break burning well and several derivation producing well on ground between subterranean oil shale layer; Derive producing well and centered by pressure break burning well, be honeycombed layout;
2) in pressure break burning well, install combustible gas and air input pipe and electronic ignition system additional;
3) pressure break burning well is pressure break chamber in the oil shale layer stage, is provided with waterpower sleeve pipe shower nozzle in pressure break chamber;
4) crack on the wall of pressure break chamber is communicated with gas channel, and the outlet of gas channel is for deriving producing well;
5) well head of derivation producing well is provided with gas-liquid separation device, is connected respectively by oil well pump with product tank, by dispatch machine, is communicated with gas power generator.
6) well head at pressure break burning well 1 is provided with material conveyor; Material conveyor is communicated with pressure break water booster system, heater, oxidizing gas device respectively;
Described waterpower sleeve pipe shower nozzle, is comprised of upper centralizer, spray gun, one way valve, lower centralizer, screen casing, guide shoe, and the surface of spray gun is provided with nozzle, and one end of spray gun is communicated with sleeve pipe by short circuit, and the other end is communicated with screen casing by one way valve; The outside cover of short circuit has upper centralizer; On the tube wall of screen casing, be evenly distributed with some sieve apertures, lower centralizer is enclosed within on screen casing, and guide shoe is fixed on the top of screen casing.
The course of work of the present utility model is as follows:
In the pressure break chamber of pressure break burning well, adopt waterpower sleeve pipe shower nozzle to carry out hydraulic jet perforation to oil shale layer, the mortar that first pumps into base fluid (water) and load fluid 20 ~ 35% carries out the cutting stage, when load fluid is during apart from nozzle 250m left and right, promote rapidly pump speed to guarantee to obtain the required enough pressure reduction (55 ~ 80MPa) of cutting perforation; After abrasive perforating 2-3min, spray orifice detritus is replaced; Pump into again crosslinked guanidine glue and sand (ratio 20 ~ 30:40 ~ 60) to increase expansion dynamics; Open flow after pressing, sand washing support fracturing gap; To filling liquid diverting agent in pit shaft; By combustible gas carrier pipe, to combustion chamber, carry LPG and air; Utilize electronic ignition system to light combustible gas; After light fluid shale, to oil shale layer, heat to 550 ~ 600 ℃, recording derives producing well and comes temperature degree to reach 200 ℃, stops for combustible gas, drives and carries part shale oil, gas is derived producing well to ground gas and oil separating plant by gas channel; Continuation is injected pressure-air in well, make in oil shale layer remaining asphalitine and fixed carbon generation oxidation reaction after destructive distillation, under hot conditions, carry out oxidation reaction, produce new fuel gas (drive simultaneously and carry shale oil, gas) by gas channel and derive producing well and derive ground; Shale oil, the gas of deriving ground are separated through ground gas-liquid separation device, and the shale oil separating is delivered to product tank storage; The fuel gas separating through gas-liquid separation device is delivered to gas power generator and is used for generating electricity.
good effect of the present utility model is:by setting up pressure break burning well, deriving producing well and ancillary service, utilize the underground in-situ extraction shale oil of oil shale, by the chemical heat intensive treatment process of pressure break chemistry destructive distillation shale oil gas, a large amount of exploitations to oil shale mine, the environment pollution of having avoided destructive distillation on the ground to bring have been removed from.The 2nd, utilize remaining asphalitine after destructive distillation, fixed carbon, realized underground continuous carbonization, heat is self-sufficient.There is small investment, operation cost is low, environment pollution is little, resource utilization is high and the advantage such as produce oil aerogenesis instant effect.
Accompanying drawing explanation
Fig. 1 is the utility model oil shale in-situ vertical shaft pressure break chemistry method for destructive distillation schematic diagram;
This utility model of Fig. 2 vertical shaft distributed architecture schematic diagram;
Fig. 3 is the utility model waterpower sleeve pipe nozzle structure schematic diagram;
In figure: 1, pressure break burning well; 2, derive producing well; 3, gas-liquid separation device; 4, product tank; 5, gas power generator; 6, oil shale layer; 7, other rock stratum; 8, gas channel; 9, material conveyor; 10 dispatch machines; 11, oil well pump; 12, crack; 13, frac tank; 14, LPG holding vessel; 15, oxidant tank; 16, upper centralizer; 17, spray gun; 18, nozzle; 19, one way valve; 20, lower centralizer; 21, screen casing; 22, guide shoe; 23, sleeve pipe; 24, short circuit.
The specific embodiment
Shown in Fig. 1, Fig. 2, pressure break burning well 1 and six mouthfuls derive producing well 2 on ground between subterranean oil shale layer 6; Derive producing well 2 and centered by pressure break burning well 1, be honeycombed layout; In pressure break burning well 1, install combustible gas and air input pipe and electronic ignition system additional; Pressure break burning well 1 is pressure break chamber in the oil shale layer stage, is provided with waterpower sleeve pipe shower nozzle in pressure break chamber; Crack 12 on the wall of pressure break chamber is communicated with gas channel 8, and the outlet of gas channel 8 is for deriving producing well 2; The well head of deriving producing well 2 is provided with gas-liquid separation device 3, is connected respectively by oil well pump 11 with product tank 4, by dispatch machine 10, is communicated with gas power generator 5; Well head at pressure break burning well 1 is provided with material conveyor 9; Material conveyor 9 is communicated with pressure break water booster system 3, LPG holding vessel 14, oxidant tank 15 respectively;
According to Fig. 3, by upper centralizer 16, spray gun 17, one way valve 19, lower centralizer 20, screen casing 22, guide shoe 23, sleeve pipe 23, short circuit 24, form waterpower sleeve pipe shower nozzle, wherein, the surface of spray gun 17 is provided with nozzle 18, one end of spray gun 17 is communicated with sleeve pipe 23 by short circuit 24, and the other end is communicated with screen casing 21 by one way valve 19; The outside cover of short circuit 24 has upper centralizer 16; On the tube wall of screen casing 21, be evenly distributed with some sieve apertures, lower centralizer 20 is enclosed within on screen casing 21, and guide shoe 22 is fixed on the top of screen casing 21.
In conjunction with Fuyu County--ridge, Changchun oil shale mine is as implementing base, and Fuyu County---ridge, Changchun oil shale resources gross reserves is 452.74 hundred million tons.Oil shale average grade 5.53%, total resources that can commercial development is 18,000,000,000, buried depth 160-800m, top board and base plate are taupe shale, oil shale layer average thickness 5m.
As shown in Figure 1, according to oil shale layer, distribute, move towards, selected pressure break burning well and derivation producing well particular location, beat a bite pressure break burning well 1(well head diameter 200mm) and six mouthfuls of derivation producing well 2(well head diameter 200mm) by subterranean strata 7 (380 meters apart from ground) to subterranean oil shale layer 6; Shown in 2, pressure break burning well 1 is positioned at center by reference to the accompanying drawings, derives producing well 2 for six mouthfuls and centered by pressure break burning well 1, is honeycombed distribution; The pressure break of drilling on the ground burning well and derivation producing well are to subterranean oil shale layer, pressure break burning well drilling depth should be as the criterion not penetrate oil shale layer, deriving producing well should be as the criterion to penetrate oil shale layer, and described derivation producing well is honeycombed layout centered by pressure break burning well.
2) in pressure break burning well, set up pressure break chamber, take out well casing, by pressure break burning well, to oil shale layer, inject high-pressure medium, oil shale layer pressure break is gone out to the crack of some 1-3mm, blind supporter quartz sand, sets up gas channel, and concrete steps are as follows:
1. drifting and well-flushing;
2. in pit shaft, be lowered to waterpower sleeve pipe shower nozzle;
3. closed casing and crag space, make oil shale layer form the pressure break space of sealing;
4. adopt waterpower sleeve pipe shower nozzle to carry out hydraulic jet perforation to oil shale layer 6; in pressure break burning well 1, by material conveyor 9, by frac tank 13, to oil shale layer 6, inject base fluid (water) and load fluid (20 ~ 35% mortars) (cutting stage); when load fluid is during apart from nozzle 250m left and right; promote rapidly pump speed to guarantee that obtaining the required enough pressure reduction (55 ~ 80MPa) of cutting perforation goes out 1-3mm crack 12 by oil shale layer 6 pressure breaks
5. after abrasive perforating 2-3min, will spray empty detritus and replace;
6. the maximum pump speed allowing according to design annular space discharge capacity or annular space maximum pressure pumps into guanidine matrix liquid by annular space, according to design, by the crosslinked guanidine glue of pumping into of oil pipe and sand, increases expansion dynamics;
7. open flow after pressing, remaining quartz sand becomes blind supporter, forms many gas channels 8, and many gas channels 8 collect and are communicated with derivation producing well 2;
8. to filling liquid diverting agent in pit shaft;
9. on, carry drilling tool, above carry drilling tool to design attitude, proceed upper strata fracturing process refracturing, until the whole pressure breaks of oil shale layer are complete.
3) at pressure break burning well, set up combustion chamber,
The first step, well-flushing, goes out ground by the sand water extraction in well,
Second step, well head is added to 0.5m Sealed casing pipe under oil shale layer, utilizes expansion agent closed casing and borehole wall space;
The 3rd step installs combustible gas and air input pipe and electronic ignition system additional in well, and sealing well head, forms combustion chamber at oil shale interval;
The 4th step, LPG holding vessel 14 and oxidant tank 15 add LPG and air by pressure break burning well 1 to oil shale layer 6 by material conveyor 9, utilize electronic ignition system to light combustible gas;
The 6th step, after light fluid shale, heats to 550 ~ 600 ℃ to oil shale layer 6, and recording derives producing well 2 and come temperature degree to reach 200 ℃, stops for combustible gas, drives and carries part shale oil, gas is derived producing wells 2 to ground gas and oil separating plant 3 by gas channel 8;
By pass into contained asphalitine and fixed carbon generation oxidation reaction after oxidant and oil shale retorting in oil shale layer 6, the heat energy of generation is as the thermal source of follow-up destructive distillation, laddering destructive distillation later stage oil shale, and shale oil, the gas of generation pass through
4) by material conveyor 9, by oxidant tank 15, continued to the interior injection pressure-air (air: 1000m of pressure break burning well 1
3/ hour), make in oil shale layer 6 remaining asphalitine and fixed carbon after destructive distillation under hot conditions, carry out oxidation reaction, produce new fuel gas (drive simultaneously and carry shale oil, gas), by gas channel 8, by deriving producing well 2 derivation ground, enter into gas-liquid separation device 3 again, realize underground in-situ extraction shale oil, gas;
5) shale oil on derivation ground, gas are through 3 separation of ground gas-liquid separation device, and the shale oil separating is delivered to product tank 4 storages by oil well pump 11 and sold;
6) fuel gas separating through gas-liquid separation device 3 is delivered to gas power generator 5 by dispatch machine 10 and is used for generating electricity.
Claims (1)
1. one kind is extracted shale oil device of air for the destructive distillation of oil shale in-situ vertical shaft pressure break chemistry, it is characterized in that mainly by pressure break burning well, several derivation producing well and gas-liquid separation device, oil well pump, product tank, dispatch machine, gas power generator, material conveyor, pressure break water booster system, heater, oxidizing gas device, being formed, wherein: in pressure break burning well, install combustible gas and air input pipe and electronic ignition system additional; Pressure break burning well and several derivation producing well on ground between subterranean oil shale layer; Derive producing well and centered by pressure break burning well, be honeycombed layout; Pressure break burning well is pressure break chamber in the oil shale layer stage, is provided with waterpower sleeve pipe shower nozzle in pressure break chamber; Crack on the wall of pressure break chamber is communicated with gas channel, and the outlet of gas channel is for deriving producing well; The well head of deriving producing well is provided with gas-liquid separation device, is connected respectively by oil well pump with product tank, by dispatch machine, is communicated with gas power generator; Well head at pressure break burning well is provided with material conveyor; Material conveyor is communicated with pressure break water booster system, heater, oxidizing gas device respectively;
Waterpower sleeve pipe shower nozzle described in pressure break chamber, is comprised of upper centralizer, spray gun, one way valve, lower centralizer, screen casing, guide shoe, and the surface of spray gun is provided with nozzle, and one end of spray gun is communicated with sleeve pipe by short circuit, and the other end is communicated with screen casing by one way valve; The outside cover of short circuit has upper centralizer; On the tube wall of screen casing, be evenly distributed with some sieve apertures, lower centralizer is enclosed within on screen casing, and guide shoe is fixed on the top of screen casing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320223668.3U CN203499664U (en) | 2013-04-28 | 2013-04-28 | Device used for extracting shale oil and gas by fracturing and chemical dry distillation of oil shale in-situ vertical shaft |
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| CN201320223668.3U CN203499664U (en) | 2013-04-28 | 2013-04-28 | Device used for extracting shale oil and gas by fracturing and chemical dry distillation of oil shale in-situ vertical shaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014176932A1 (en) * | 2013-04-28 | 2014-11-06 | 吉林省众诚汽车服务连锁有限公司 | Method and process for shale oil and gas extraction by fracturing and chemical retorting in oil shale in situ vertical well |
| WO2014176933A1 (en) * | 2013-04-28 | 2014-11-06 | 吉林省众诚汽车服务连锁有限公司 | Method and process for shale oil and gas extraction by fracturing and chemical retorting in oil shale in situ horizontal well |
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2013
- 2013-04-28 CN CN201320223668.3U patent/CN203499664U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014176932A1 (en) * | 2013-04-28 | 2014-11-06 | 吉林省众诚汽车服务连锁有限公司 | Method and process for shale oil and gas extraction by fracturing and chemical retorting in oil shale in situ vertical well |
| WO2014176933A1 (en) * | 2013-04-28 | 2014-11-06 | 吉林省众诚汽车服务连锁有限公司 | Method and process for shale oil and gas extraction by fracturing and chemical retorting in oil shale in situ horizontal well |
| US9784086B2 (en) | 2013-04-28 | 2017-10-10 | Jilin Zhongcheng Oil Shale Investment And Development Co., Ltd. | Method and process for extracting shale oil and gas by fracturing and chemical retorting in oil shale in-situ horizontal well |
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Granted publication date: 20140326 |