CN104073233A - Self-heat generation chemical temperature rise agent for alkaline thickened oil reservoir and use method - Google Patents
Self-heat generation chemical temperature rise agent for alkaline thickened oil reservoir and use method Download PDFInfo
- Publication number
- CN104073233A CN104073233A CN201410353289.5A CN201410353289A CN104073233A CN 104073233 A CN104073233 A CN 104073233A CN 201410353289 A CN201410353289 A CN 201410353289A CN 104073233 A CN104073233 A CN 104073233A
- Authority
- CN
- China
- Prior art keywords
- heat generating
- self
- generating agent
- aluminium powder
- oil reservoir
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/592—Compositions used in combination with generated heat, e.g. by steam injection
Abstract
The invention discloses a self-heat generation chemical temperature rise agent for an alkaline thickened oil reservoir, which comprises a heat generation agent and a trigger agent, wherein the heat generation agent comprises aluminum powder with a particle size no greater than 400 meshes, and a wrapping layer for wrapping the aluminum powder; the trigger agent is an NaOh aqueous solution; a ratio of mass of the aluminum powder to the mass of NaOH in the NaOH aqueous solution is 1:(1.0-2.5); and the wrapping layer is a paraffin or aluminum stearate wrapping layer. In addition, the invention further discloses a use method of the self-heat generation heat chemical temperature rise agent. The self-heat generation chemical temperature rise agent has the advantages of high heat generation efficiency, safe and reliable reservoir transportation and injection process, quick temperature sensitivity trigger, good carrying and injection effect and the like, and is applicable to self-heat generation temperature rise synergism development in the alkaline thickened oil reservoir and the thickened oil reservoir with a penetration rate greater than 500*10<-3> cubic micrometers and oil reservoir temperature higher than 60 DEG C.
Description
Technical field
The invention belongs to Self-heating synergy development technique field in alkaline thick oil reservoir, be specifically related to a kind of chemistry temperature raising medicament of the Self-heating for alkaline thick oil reservoir and using method.
Background technology
The exploitation of viscous crude aboundresources is significant, and a distinguishing feature of heavy crude reservoir is under formation condition, and thick oil viscosity is high, relative density is large, flow capacity is poor, thereby is difficult to develop cost-effectively with routine techniques.But the viscosity temperature of viscous crude is very responsive, temperature raises and significantly reduces, and viscosity is higher, and fall is larger, when now viscous crude flows, is tending towards Newtonian fuid, and this is the important thermophysical property of viscous crude, is also the basic foundation of thermal recovery.Take at present steam flood and steam stimulation both at home and abroad mainly exploits means as it, for the too small problem of effective radius of influence existing in heavy oil exploitation via steam injection process, in conjunction with space flight navigational field high calorie density fuel technology, proposition is injected the auxiliary temperature raising theory of chemical heat generating agent to the under-effected formation at target locations of steam, to realize Self-heating reaction in the layer under heavy oil cold flow production and steam treatment condition, effectively reduce viscosity of crude in layer, improve mobility, further promote cold adopting and the exploitation effect of the heavy crude heat extraction technology such as steam stimulation or hydrothermal cracking.
At present field use comparatively widely Self-heating system have nitrite and ammonium salt heat-dissipating system, H
2o
2heat-dissipating system, poly-hydroxy formoxy-heat-dissipating system, due to aspect restrictions such as its exothermal efficiency, injection safety and stability, it is applied in the aspects such as fracturing liquid, pit shaft heat-dissipating paraffin removal mostly, is difficult to realize Self-heating temperature raising in the inner porous medium of reservoir.Thus, the exploitation of viscous crude Self-heating is large in the urgent need to a kind of thermal discharge, and cost is low, the chemical heat generating agent system that job safety is easy.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, and a kind of chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament is provided.This Self-heating chemistry temperature raising medicament has that heat-dissipating efficiency is high, transportation reservoir and safe and reliable, the temperature sensitive triggering of injection process rapidly, carry and inject the advantages such as effective, applicable to the Self-heating temperature raising synergy exploitation of alkaline thick oil reservoir inside.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament, it is characterized in that, comprise heat generating agent and trigger agent, described heat generating agent comprises that granularity is not more than 400 object aluminium powders and for wrapping up the coating layer of aluminium powder, described triggering agent is the NaOH aqueous solution, and in the quality of aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:(1.0～2.5), described coating layer is paraffin coating layer or aluminum stearate coating layer.
The above-mentioned chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament, in the quality of described aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:(1.6～2.0).
The above-mentioned chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament, in the quality of described aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:1.8.
The above-mentioned chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament, the mass concentration of the described NaOH aqueous solution is 25%～30%.
The above-mentioned chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament, when described coating layer is paraffin coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the agitation condition of 65 ℃～70 ℃, paraffin is added in hexanaphthene until fusing completely, obtain Quality of Paraffin Waxes concentration and be 20%～40% coated solution, then under temperature-resistant agitation condition, according to the mass ratio of aluminium powder and paraffin, be (4～6): 1 ratio adds aluminium powder in coated solution, and constant temperature disperses 20min～40min;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 100rpm～150rpm, and paraffin, in aluminium powder surface condensation, filters after stratification, obtains filter residue;
Step 3, filter residue described in step 2 is dry with hexanaphthene flushing final vacuum, then grinds the filter residue after vacuum-drying, obtains solid granular heat generating agent.
The above-mentioned chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament, vacuum drying temperature described in step 3 is 18 ℃～25 ℃, the vacuum drying time is 8h～15h.
The above-mentioned chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament, when described coating layer is aluminum stearate coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the water bath condition of 50 ℃～60 ℃, dehydrated alcohol constant temperature is stirred to 30min～60min, then in dehydrated alcohol, add stearic acid, being stirred to stearic acid dissolves completely, obtain stearic acid mass concentration and be 0.5%～2% coated solution, under agitation condition, according to aluminium powder and stearic mass ratio, be (80～120) again: 1 ratio adds aluminium powder in coated solution, and constant temperature disperses 20min～40min, stearic acid reacts with part aluminium powder and generates aluminum stearate;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 100rpm～150rpm, and the aluminum stearate that reaction generates is in the surface condensation of residue aluminium powder, filter after continuing to stir 30min～90min, obtain filter residue;
Step 3, filter residue described in step 2 is carried out to vacuum-drying, then the filter residue after vacuum-drying is ground, obtain solid granular heat generating agent.
The above-mentioned chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament, vacuum drying temperature described in step 3 is 18 ℃～25 ℃, the vacuum drying time is 8h～15h.
In addition, the present invention also provides a kind of using method of above-mentioned Self-heating chemistry temperature raising medicament, it is characterized in that, the method comprises the following steps:
Step 1, according to Natvosol, be 1:(15～25 with the mass ratio of sodium-chlor) the ratio hydroxy ethyl fiber cellulose solution that is 1%～2% by mass concentration and the mass concentration sodium chloride solution that is 20%～30% stir after mixing, obtain transport fluid;
Step 2, heat generating agent is added described in step 1 in transport fluid, stir until heat generating agent is suspended in transport fluid completely; The add-on of described heat generating agent is: every 100mL transport fluid adds 30g～50g heat generating agent;
Step 3, the heat generating agent carrying to transport fluid in implantation step two in pit shaft then inject 3m in pit shaft
3～5m
3water, injects in the most backward pit shaft and triggers agent.
The present invention compared with prior art has the following advantages:
1, the present invention is in conjunction with the high calorie density fuel technology of space flight navigational field, utilize heat generating agent to emit amount of heat with triggering agent and reacting of local water, adopt the coated microcapsulary to prepare heat generating agent simultaneously, guaranteed heat generating agent ground conveying, storage and miscible in security.
2, Self-heating of the present invention chemistry temperature raising medicament have that heat-dissipating efficiency is high, transportation reservoir and safe and reliable, the temperature sensitive triggering of injection process rapidly, carry and inject the advantages such as effective, applicable to the Self-heating temperature raising synergy exploitation of alkaline environment thick oil reservoir inside.
3, Self-heating chemistry temperature raising medicament of the present invention in use, heat generating agent is carried smoothly and is entered pit shaft by transport fluid, under hot conditions in pit shaft, the fusing of the coating layer on heat generating agent surface, after contacting with the triggering agent of local water and injection subsequently, there is following reaction in coated aluminium powder:
2Al+6H
2O→3H
2↑+2Al(OH)
3↓，
Al(OH)
3+NaOH→NaAlO
2+2H
2O，
More than reaction is carried out simultaneously, so its reaction formula can be write as:
2Al+2NaOH+2H
2O→3H
2↑+2NaAlO
2，
The heat that 416.5KJ/mol Al is emitted in reaction, realizes the temperature raising of Self-heating chemistry.
4, Self-heating chemistry temperature raising medicament of the present invention is applicable to rate of permeation >500 * 10
-3μ m
2, reservoir temperature >60 ℃ thick oil reservoir.
5, the spontaneous thermit powder exothermal efficiency of the present invention is high, and unit mass thermal discharge is 5～15 times of the ripe heat release system in current oil field.
Below by embodiment, technical solution of the present invention is described in further detail.
Embodiment
Embodiment 1
Self-heating for the alkaline thick oil reservoir chemistry temperature raising medicament of the present embodiment, comprise heat generating agent and trigger agent, described heat generating agent comprises that granularity is not more than 400 object aluminium powders and for wrapping up the coating layer of aluminium powder, described triggering agent is that mass concentration is 25% the NaOH aqueous solution, in the quality of aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:1.0, and described coating layer is paraffin coating layer or aluminum stearate coating layer;
When coating layer is paraffin coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the agitation condition of 65 ℃, paraffin is added in hexanaphthene until fusing completely, obtain Quality of Paraffin Waxes concentration and be 20% coated solution, then the ratio that is 4:1 according to the mass ratio of aluminium powder and paraffin under temperature-resistant agitation condition adds aluminium powder in coated solution, and constant temperature disperses 20min;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 100rpm, and paraffin, in aluminium powder surface condensation, filters after stratification, obtains filter residue;
Step 3, filter residue described in step 2 is dry with hexanaphthene flushing final vacuum, then grinds the filter residue after vacuum-drying, obtains solid granular heat generating agent; Described vacuum drying temperature is 18 ℃, and the vacuum drying time is 15h.
When coating layer is aluminum stearate coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the water bath condition of 50 ℃, dehydrated alcohol constant temperature is stirred to 60min, then in dehydrated alcohol, add stearic acid, being stirred to stearic acid dissolves completely, obtain stearic acid mass concentration and be 0.5% coated solution, the ratio that is 80:1 according to aluminium powder and stearic mass ratio under agitation condition again adds aluminium powder in coated solution, and constant temperature disperses 20min, and stearic acid reacts with part aluminium powder and generates aluminum stearate;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 100rpm, and the aluminum stearate that reaction generates is in the surface condensation of residue aluminium powder, filter after continuing to stir 30min, obtain filter residue;
Step 3, filter residue described in step 2 is carried out to vacuum-drying, then the filter residue after vacuum-drying is ground, obtain solid granular heat generating agent; Described vacuum drying temperature is 18 ℃, and the vacuum drying time is 15h.
The using method of the Self-heating chemistry temperature raising medicament of the present embodiment is:
After the sodium chloride solution that the hydroxy ethyl fiber cellulose solution that step 1, the ratio that is 1:20 according to the mass ratio of Natvosol and sodium-chlor are 1% by mass concentration and mass concentration are 20% mixes, stir, obtain transport fluid;
Step 2, heat generating agent is added in transport fluid, stir until heat generating agent is suspended in transport fluid completely; The add-on of described heat generating agent is: every 100mL transport fluid adds 30g heat generating agent;
Step 3, the heat generating agent carrying to transport fluid in implantation step two in pit shaft then inject 3m in pit shaft
3water, injects and triggers agent in the most backward pit shaft, controls injection pressure and be less than 90% of reservoir parting pressure in injection process.
Embodiment 2
Self-heating for the alkaline thick oil reservoir chemistry temperature raising medicament of the present embodiment, comprise heat generating agent and trigger agent, described heat generating agent comprises that granularity is not more than 400 object aluminium powders and for wrapping up the coating layer of aluminium powder, described triggering agent is that mass concentration is 30% the NaOH aqueous solution, in the quality of aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:2.5, and described coating layer is paraffin coating layer or aluminum stearate coating layer;
When coating layer is paraffin coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the agitation condition of 70 ℃, paraffin is added in hexanaphthene until fusing completely, obtain Quality of Paraffin Waxes concentration and be 40% coated solution, then the ratio that is 6:1 according to the mass ratio of aluminium powder and paraffin under temperature-resistant agitation condition adds aluminium powder in coated solution, and constant temperature disperses 40min;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 150rpm, and paraffin, in aluminium powder surface condensation, filters after stratification, obtains filter residue;
Step 3, filter residue described in step 2 is dry with hexanaphthene flushing final vacuum, then grinds the filter residue after vacuum-drying, obtains solid granular heat generating agent; Described vacuum drying temperature is 25 ℃, and the vacuum drying time is 8h.
When coating layer is aluminum stearate coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the water bath condition of 60 ℃, dehydrated alcohol constant temperature is stirred to 30min, then in dehydrated alcohol, add stearic acid, being stirred to stearic acid dissolves completely, obtain stearic acid mass concentration and be 2% coated solution, the ratio that is 120:1 according to aluminium powder and stearic mass ratio under agitation condition again adds aluminium powder in coated solution, and constant temperature disperses 40min, and stearic acid reacts with part aluminium powder and generates aluminum stearate;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 150rpm, and the aluminum stearate that reaction generates is in the surface condensation of residue aluminium powder, filter after continuing to stir 90min, obtain filter residue;
Step 3, filter residue described in step 2 is carried out to vacuum-drying, then the filter residue after vacuum-drying is ground, obtain solid granular heat generating agent; Described vacuum drying temperature is 25 ℃, and the vacuum drying time is 8h.
The using method of the Self-heating chemistry temperature raising medicament of the present embodiment is:
After the sodium chloride solution that the hydroxy ethyl fiber cellulose solution that step 1, the ratio that is 1:15 according to the mass ratio of Natvosol and sodium-chlor are 2% by mass concentration and mass concentration are 30% mixes, stir, obtain transport fluid;
Step 2, heat generating agent is added in transport fluid, stir until heat generating agent is suspended in transport fluid completely; The add-on of described heat generating agent is: every 100mL transport fluid adds 50g heat generating agent;
Step 3, the heat generating agent carrying to transport fluid in implantation step two in pit shaft then inject 5m in pit shaft
3water, injects and triggers agent in the most backward pit shaft, controls injection pressure and be less than 90% of reservoir parting pressure in injection process.
Embodiment 3
Self-heating for the alkaline thick oil reservoir chemistry temperature raising medicament of the present embodiment, comprise heat generating agent and trigger agent, described heat generating agent comprises that granularity is not more than 400 object aluminium powders and for wrapping up the coating layer of aluminium powder, described triggering agent is that mass concentration is 27% the NaOH aqueous solution, in the quality of aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:1.6, and described coating layer is paraffin coating layer or aluminum stearate coating layer;
When coating layer is paraffin coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the agitation condition of 68 ℃, paraffin is added in hexanaphthene until fusing completely, obtain Quality of Paraffin Waxes concentration and be 25% coated solution, then the ratio that is 5:1 according to the mass ratio of aluminium powder and paraffin under temperature-resistant agitation condition adds aluminium powder in coated solution, and constant temperature disperses 30min;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 120rpm, and paraffin, in aluminium powder surface condensation, filters after stratification, obtains filter residue;
Step 3, filter residue described in step 2 is dry with hexanaphthene flushing final vacuum, then grinds the filter residue after vacuum-drying, obtains solid granular heat generating agent; Described vacuum drying temperature is 20 ℃, and the vacuum drying time is 10h.
When coating layer is aluminum stearate coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the water bath condition of 55 ℃, dehydrated alcohol constant temperature is stirred to 40min, then in dehydrated alcohol, add stearic acid, being stirred to stearic acid dissolves completely, obtain stearic acid mass concentration and be 1% coated solution, the ratio that is 100:1 according to aluminium powder and stearic mass ratio under agitation condition again adds aluminium powder in coated solution, and constant temperature disperses 30min, and stearic acid reacts with part aluminium powder and generates aluminum stearate;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 120rpm, and the aluminum stearate that reaction generates is in the surface condensation of residue aluminium powder, filter after continuing to stir 60min, obtain filter residue;
Step 3, filter residue described in step 2 is carried out to vacuum-drying, then the filter residue after vacuum-drying is ground, obtain solid granular heat generating agent; Described vacuum drying temperature is 20 ℃, and the vacuum drying time is 10h.
The using method of the Self-heating chemistry temperature raising medicament of the present embodiment is:
After the sodium chloride solution that the hydroxy ethyl fiber cellulose solution that step 1, the ratio that is 1:25 according to the mass ratio of Natvosol and sodium-chlor are 1.5% by mass concentration and mass concentration are 25% mixes, stir, obtain transport fluid;
Step 2, heat generating agent is added in transport fluid, stir until heat generating agent is suspended in transport fluid completely; The add-on of described heat generating agent is: every 100mL transport fluid adds 40g heat generating agent;
Step 3, the heat generating agent carrying to transport fluid in implantation step two in pit shaft then inject 4m in pit shaft
3water, injects and triggers agent in the most backward pit shaft, controls injection pressure and be less than 90% of reservoir parting pressure in injection process.
Embodiment 4
Self-heating for the alkaline thick oil reservoir chemistry temperature raising medicament of the present embodiment, comprise heat generating agent and trigger agent, described heat generating agent comprises that granularity is not more than 400 object aluminium powders and for wrapping up the coating layer of aluminium powder, described triggering agent is that mass concentration is 27% the NaOH aqueous solution, in the quality of aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:2.0, and described coating layer is paraffin coating layer or aluminum stearate coating layer;
When coating layer is paraffin coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the agitation condition of 70 ℃, paraffin is added in hexanaphthene until fusing completely, obtain Quality of Paraffin Waxes concentration and be 35% coated solution, then the ratio that is 4.5:1 according to the mass ratio of aluminium powder and paraffin under temperature-resistant agitation condition adds aluminium powder in coated solution, and constant temperature disperses 30min;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 130rpm, and paraffin, in aluminium powder surface condensation, filters after stratification, obtains filter residue;
Step 3, filter residue described in step 2 is dry with hexanaphthene flushing final vacuum, then grinds the filter residue after vacuum-drying, obtains solid granular heat generating agent; Described vacuum drying temperature is 22 ℃, and the vacuum drying time is 12h.
When coating layer is aluminum stearate coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the water bath condition of 60 ℃, dehydrated alcohol constant temperature is stirred to 60min, then in dehydrated alcohol, add stearic acid, being stirred to stearic acid dissolves completely, obtain stearic acid mass concentration and be 1.5% coated solution, the ratio that is 90:1 according to aluminium powder and stearic mass ratio under agitation condition again adds aluminium powder in coated solution, and constant temperature disperses 30min, and stearic acid reacts with part aluminium powder and generates aluminum stearate;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 130rpm, and the aluminum stearate that reaction generates is in the surface condensation of residue aluminium powder, filter after continuing to stir 45min, obtain filter residue;
Step 3, filter residue described in step 2 is carried out to vacuum-drying, then the filter residue after vacuum-drying is ground, obtain solid granular heat generating agent; Described vacuum drying temperature is 22 ℃, and the vacuum drying time is 12h.
The using method of the Self-heating chemistry temperature raising medicament of the present embodiment is:
After the sodium chloride solution that the hydroxy ethyl fiber cellulose solution that step 1, the ratio that is 1:20 according to the mass ratio of Natvosol and sodium-chlor are 1.8% by mass concentration and mass concentration are 28% mixes, stir, obtain transport fluid;
Step 2, heat generating agent is added in transport fluid, stir until heat generating agent is suspended in transport fluid completely; The add-on of described heat generating agent is: every 100mL transport fluid adds 35g heat generating agent;
Step 3, the heat generating agent carrying to transport fluid in implantation step two in pit shaft then inject 3.5m in pit shaft
3water, injects and triggers agent in the most backward pit shaft, controls injection pressure and be less than 90% of reservoir parting pressure in injection process.
Embodiment 5
Self-heating for the alkaline thick oil reservoir chemistry temperature raising medicament of the present embodiment, comprise heat generating agent and trigger agent, described heat generating agent comprises that granularity is not more than 400 object aluminium powders and for wrapping up the coating layer of aluminium powder, described triggering agent is that mass concentration is 30% the NaOH aqueous solution, in the quality of aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:1.8, and described coating layer is paraffin coating layer or aluminum stearate coating layer;
When coating layer is paraffin coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the agitation condition of 70 ℃, paraffin is added in hexanaphthene until fusing completely, obtain Quality of Paraffin Waxes concentration and be 30% coated solution, then the ratio that is 5:1 according to the mass ratio of aluminium powder and paraffin under temperature-resistant agitation condition adds aluminium powder in coated solution, and constant temperature disperses 30min;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 120rpm, and paraffin, in aluminium powder surface condensation, filters after stratification, obtains filter residue;
Step 3, filter residue described in step 2 is dry with hexanaphthene flushing final vacuum, then grinds the filter residue after vacuum-drying, obtains solid granular heat generating agent; Described vacuum drying temperature is 20 ℃, and the vacuum drying time is 12h.
When coating layer is aluminum stearate coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the water bath condition of 60 ℃, dehydrated alcohol constant temperature is stirred to 50min, then in dehydrated alcohol, add stearic acid, being stirred to stearic acid dissolves completely, obtain stearic acid mass concentration and be 1% coated solution, the ratio that is 100:1 according to aluminium powder and stearic mass ratio under agitation condition again adds aluminium powder in coated solution, and constant temperature disperses 30min, and stearic acid reacts with part aluminium powder and generates aluminum stearate;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 120rpm, and the aluminum stearate that reaction generates is in the surface condensation of residue aluminium powder, filter after continuing to stir 60min, obtain filter residue;
Step 3, filter residue described in step 2 is carried out to vacuum-drying, then the filter residue after vacuum-drying is ground, obtain solid granular heat generating agent; Described vacuum drying temperature is 22 ℃, and the vacuum drying time is 12h.
The using method of the Self-heating chemistry temperature raising medicament of the present embodiment is:
After the sodium chloride solution that the hydroxy ethyl fiber cellulose solution that step 1, the ratio that is 1:20 according to the mass ratio of Natvosol and sodium-chlor are 1.5% by mass concentration and mass concentration are 25% mixes, stir, obtain transport fluid;
Step 2, heat generating agent is added in transport fluid, stir until heat generating agent is suspended in transport fluid completely; The add-on of described heat generating agent is: every 100mL transport fluid adds 40g heat generating agent;
Step 3, the heat generating agent carrying to transport fluid in implantation step two in pit shaft then inject 4m in pit shaft
3water, injects and triggers agent in the most backward pit shaft, controls injection pressure and be less than 90% of reservoir parting pressure in injection process.
The Self-heating temperature raising medicament that adopts the embodiment of the present invention 1 to embodiment 5, carries out field test in Shengli Oil Field one heavy oil wells, 66 ℃ of this well reservoir temperatures, well depth 1450m, zone permeability 2332 * 10
-3μ m
2, meet technology application reservoir condition (rate of permeation >500 * 10
-3μ m
2, reservoir temperature >60 ℃), construction before this well in noenergy end-of-life state.The relation that heat generating agent consumption can produce heat and steam heat by heat generating agent is determined, suppose 1.6 meters of thick oil pays of effect 5-15 rice scope, crude oil lifts temperature to 120 ℃, local water lifts temperature to 100 ℃, formation rock skeleton lifts temperature to 120 ℃, and heat generating agent thermal discharge is pressed 416.5kJ/mol Al, and budgetary estimate aluminium powder consumption is 2 tons, according to aluminium powder consumption, calculate heat generating agent consumption, and then calculate and trigger agent consumption.
Before and after this well construction, production data is as shown in the table:
Condition of production table before and after the construction of table 1 test pit
Before this well construction, liquid level is positioned at below pumping hole, in stop pumping state, after construction, individual well production fluid reaches 6.3t/d, initial stage production fluid well head probe temperature reaches 73.5 degrees Celsius, consider temperature in wellbore loss, well fluids downhole temperature is greater than 100 degrees Celsius, and this reservoir the original reservoir temperature is only 66 ℃, show that Self-heating chemistry temperature raising medicament of the present invention effectively raises reservoir fluid temperature, can realize the Self-heating temperature raising synergy exploitation of thick oil reservoir inside.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any restriction, every any simple modification of above embodiment being done according to invention technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (9)
1. the Self-heating for alkaline thick oil reservoir chemistry temperature raising medicament, it is characterized in that, comprise heat generating agent and trigger agent, described heat generating agent comprises that granularity is not more than 400 object aluminium powders and for wrapping up the coating layer of aluminium powder, described triggering agent is the NaOH aqueous solution, in the quality of aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:(1.0～2.5), described coating layer is paraffin coating layer or aluminum stearate coating layer.
2. the chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament according to claim 1, is characterized in that, in the quality of described aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:(1.6～2.0).
3. the chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament according to claim 2, is characterized in that, in the quality of described aluminium powder and the NaOH aqueous solution, the mass ratio of NaOH is 1:1.8.
4. according to the chemistry of the Self-heating for the alkaline thick oil reservoir temperature raising medicament described in claim 1,2 or 3, it is characterized in that, the mass concentration of the described NaOH aqueous solution is 25%～30%.
5. according to the chemistry of the Self-heating for the alkaline thick oil reservoir temperature raising medicament described in claim 1,2 or 3, it is characterized in that, when described coating layer is paraffin coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the agitation condition of 65 ℃～70 ℃, paraffin is added in hexanaphthene until fusing completely, obtain Quality of Paraffin Waxes concentration and be 20%～40% coated solution, then under temperature-resistant agitation condition, according to the mass ratio of aluminium powder and paraffin, be (4～6): 1 ratio adds aluminium powder in coated solution, and constant temperature disperses 20min～40min;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 100rpm～150rpm, and paraffin, in aluminium powder surface condensation, filters after stratification, obtains filter residue;
Step 3, filter residue described in step 2 is dry with hexanaphthene flushing final vacuum, then grinds the filter residue after vacuum-drying, obtains solid granular heat generating agent.
6. the chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament according to claim 5, is characterized in that, vacuum drying temperature described in step 3 is 18 ℃～25 ℃, and the vacuum drying time is 8h～15h.
7. according to the chemistry of the Self-heating for the alkaline thick oil reservoir temperature raising medicament described in claim 1,2 or 3, it is characterized in that, when described coating layer is aluminum stearate coating layer, the preparation method of described heat generating agent comprises the following steps:
Step 1, under the water bath condition of 50 ℃～60 ℃, dehydrated alcohol constant temperature is stirred to 30min～60min, then in dehydrated alcohol, add stearic acid, being stirred to stearic acid dissolves completely, obtain stearic acid mass concentration and be 0.5%～2% coated solution, under agitation condition, according to aluminium powder and stearic mass ratio, be (80～120) again: 1 ratio adds aluminium powder in coated solution, and constant temperature disperses 20min～40min, stearic acid reacts with part aluminium powder and generates aluminum stearate;
Step 2, the material after constant temperature in step 1 is disperseed drop to room temperature at the agitation condition of 100rpm～150rpm, and the aluminum stearate that reaction generates is in the surface condensation of residue aluminium powder, filter after continuing to stir 30min～90min, obtain filter residue;
Step 3, filter residue described in step 2 is carried out to vacuum-drying, then the filter residue after vacuum-drying is ground, obtain solid granular heat generating agent.
8. the chemistry of the Self-heating for alkaline thick oil reservoir temperature raising medicament according to claim 7, is characterized in that, vacuum drying temperature described in step 3 is 18 ℃～25 ℃, and the vacuum drying time is 8h～15h.
9. a using method for Self-heating chemistry temperature raising medicament as described in claim 1,2 or 3, is characterized in that, the method comprises the following steps:
Step 1, according to Natvosol, be 1:(15～25 with the mass ratio of sodium-chlor) the ratio hydroxy ethyl fiber cellulose solution that is 1%～2% by mass concentration and the mass concentration sodium chloride solution that is 20%～30% stir after mixing, obtain transport fluid;
Step 2, heat generating agent is added described in step 1 in transport fluid, stir until heat generating agent is suspended in transport fluid completely; The add-on of described heat generating agent is: every 100mL transport fluid adds 30g～50g heat generating agent;
Step 3, the heat generating agent carrying to transport fluid in implantation step two in pit shaft then inject 3m in pit shaft
3～5m
3water, injects in the most backward pit shaft and triggers agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353289.5A CN104073233B (en) | 2014-07-23 | 2014-07-23 | Self-heat generation chemical temperature rise agent for alkaline thickened oil reservoir and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353289.5A CN104073233B (en) | 2014-07-23 | 2014-07-23 | Self-heat generation chemical temperature rise agent for alkaline thickened oil reservoir and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104073233A true CN104073233A (en) | 2014-10-01 |
| CN104073233B CN104073233B (en) | 2017-03-22 |
Family
ID=51594849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410353289.5A Active CN104073233B (en) | 2014-07-23 | 2014-07-23 | Self-heat generation chemical temperature rise agent for alkaline thickened oil reservoir and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104073233B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089592A (en) * | 2015-07-17 | 2015-11-25 | 中国石油大学(华东) | Injection process and injection equipment of chemical heat generating system in thick oil storage layer |
| CN108176851A (en) * | 2018-01-02 | 2018-06-19 | 中国工程物理研究院化工材料研究所 | A kind of metallic aluminium powder coats means of defence |
| CN110003873A (en) * | 2019-04-16 | 2019-07-12 | 济南大学 | A kind of preparation method of neutral homogeneous spontaneous heating economic benefits and social benefits de-plugging scale remover |
| CN110003874A (en) * | 2019-04-16 | 2019-07-12 | 济南大学 | A kind of preparation method of temperature control type economic benefits and social benefits de-plugging scale remover |
| CN111876143A (en) * | 2020-07-20 | 2020-11-03 | 中国石油大学(北京) | Proppant and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580704A (en) * | 2009-05-15 | 2009-11-18 | 杨强 | Washing agent and washing method for paraffin removal and unplugging of oil wells and oil pumping pipelines of oil fields |
| CN101649191A (en) * | 2009-07-30 | 2010-02-17 | 戚伟 | Heating agent for stewing food |
| CN101113321B (en) * | 2007-09-03 | 2010-09-22 | 蒋学军 | Non-flame heat-generating agent |
| US20130220616A1 (en) * | 2012-02-28 | 2013-08-29 | Baker Hughes Incorporated | In Situ Heat Generation |
-
2014
- 2014-07-23 CN CN201410353289.5A patent/CN104073233B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113321B (en) * | 2007-09-03 | 2010-09-22 | 蒋学军 | Non-flame heat-generating agent |
| CN101580704A (en) * | 2009-05-15 | 2009-11-18 | 杨强 | Washing agent and washing method for paraffin removal and unplugging of oil wells and oil pumping pipelines of oil fields |
| CN101649191A (en) * | 2009-07-30 | 2010-02-17 | 戚伟 | Heating agent for stewing food |
| US20130220616A1 (en) * | 2012-02-28 | 2013-08-29 | Baker Hughes Incorporated | In Situ Heat Generation |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089592A (en) * | 2015-07-17 | 2015-11-25 | 中国石油大学(华东) | Injection process and injection equipment of chemical heat generating system in thick oil storage layer |
| CN105089592B (en) * | 2015-07-17 | 2017-07-28 | 中国石油大学(华东) | Chemical Self-heating system injection technology and injection device in thick oil reservoir |
| CN108176851A (en) * | 2018-01-02 | 2018-06-19 | 中国工程物理研究院化工材料研究所 | A kind of metallic aluminium powder coats means of defence |
| CN110003873A (en) * | 2019-04-16 | 2019-07-12 | 济南大学 | A kind of preparation method of neutral homogeneous spontaneous heating economic benefits and social benefits de-plugging scale remover |
| CN110003874A (en) * | 2019-04-16 | 2019-07-12 | 济南大学 | A kind of preparation method of temperature control type economic benefits and social benefits de-plugging scale remover |
| CN111876143A (en) * | 2020-07-20 | 2020-11-03 | 中国石油大学(北京) | Proppant and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104073233B (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6848006B2 (en) | Methods for Forming High-Efficiency Geothermal Well Holes | |
| CN104073233A (en) | Self-heat generation chemical temperature rise agent for alkaline thickened oil reservoir and use method | |
| CN104066812B (en) | The tight gas volume increase being generated using original position nitrogen | |
| CN105332681B (en) | The thermostimulation of hot dry rock heat reservori and chemical stimulation process integration | |
| CN104675360B (en) | Note supercritical CO2The pre- antiseep technique of exploitation dry-hot-rock geothermal | |
| CA2916351C (en) | Apparatus and methods for stimulating reservoirs using fluids containing nano/micro heat transfer elements | |
| US3827243A (en) | Method for recovering geothermal energy | |
| CA2754554C (en) | Process for producing mineral oil from underground mineral oil deposits | |
| WO2018112610A1 (en) | Enhancing geothermal energy production in a well | |
| CN105505360A (en) | Fluoroboric acid blocking remover and acidification de-blocking method | |
| US9945219B2 (en) | Process for producing mineral oil from underground mineral oil deposits | |
| Aqui et al. | Permeability enhancement of conventional geothermal wells | |
| CN107739599A (en) | A kind of high temperature low-density water shutoff agent and preparation method thereof and onsite application method | |
| CN102536166A (en) | Method for deep treatment of oil layer through self-generation foam acidification | |
| CN112272731A (en) | Method for thermochemical treatment of oil reservoirs | |
| US20160076351A1 (en) | Method For Hydraulic Fracking Of An Underground Formation | |
| Liao et al. | Lightweight proppants in unconventional oil and natural gas development: A review | |
| CN108456511A (en) | A kind of layer is interior to generate CO2System and its application | |
| Wang et al. | High-temperature-resistant, clean, and environmental-friendly fracturing fluid system and performance evaluation of tight sandstone | |
| CN104087279A (en) | Self thermogenesis chemical temperature raising agent for acid thick oil reservoir and use method of agent | |
| CN105089592B (en) | Chemical Self-heating system injection technology and injection device in thick oil reservoir | |
| CN104109510A (en) | Solid-free slurry-replacing well completion protective fluid and preparation method thereof | |
| RU2433258C1 (en) | Method of thermal gas formation treatment | |
| WO2018112611A1 (en) | Enhancing geothermal energy production in a well | |
| US5088555A (en) | Consolidation agent and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |