CN100537701C - Low-temperature self-generated gas complexing agent - Google Patents
Low-temperature self-generated gas complexing agent Download PDFInfo
- Publication number
- CN100537701C CN100537701C CNB200610113487XA CN200610113487A CN100537701C CN 100537701 C CN100537701 C CN 100537701C CN B200610113487X A CNB200610113487X A CN B200610113487XA CN 200610113487 A CN200610113487 A CN 200610113487A CN 100537701 C CN100537701 C CN 100537701C
- Authority
- CN
- China
- Prior art keywords
- agent
- low
- effect
- stratum
- ton
- 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.)
- Active
Links
- 239000008139 complexing agent Substances 0.000 title abstract 2
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000000654 additive Substances 0.000 claims abstract description 9
- 230000000996 additive effect Effects 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 150000007524 organic acids Chemical class 0.000 claims abstract description 7
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 125000003917 carbamoyl group Chemical class [H]N([H])C(*)=O 0.000 claims description 6
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 238000011084 recovery Methods 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 238000010795 Steam Flooding Methods 0.000 abstract description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 2
- 239000012752 auxiliary agent Substances 0.000 abstract 1
- 235000013877 carbamide Nutrition 0.000 abstract 1
- 239000004202 carbamide Substances 0.000 abstract 1
- 239000013589 supplement Substances 0.000 abstract 1
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 12
- 230000006378 damage Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 238000010794 Cyclic Steam Stimulation Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000638 stimulation Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A low-temperature self-generated gas complexing agent is used for improving the recovery efficiency of steam huff and puff effect by chemical auxiliary steam flooding in the thermal recovery of thick oil. The chemical auxiliary agent can react rapidly under the stratum condition at low temperature (controllable at 10-65 ℃) to release a large amount of gas and supplement the stratum energy rapidly, comprises carbamide, low-carbon mixed organic acid, a composite catalyst, a sulfonate cleanup additive and the like, is applied to the middle and later stages of steam huff and puff mining, reduces the flowing resistance of stratum fluid, improves the permeability of a reservoir and improves the steam huff and puff mining effect by supplementing the stratum energy rapidly.
Description
Technical field:
The invention belongs to the raising recovery ratio Technology field that chemical assisted steam flooding improves the steam stimulation effect in the heavy crude heat extraction, particularly be applied to the cyclic steam stimulation intermediary and later stages, by replenishing producing energy rapidly, reduce the formation fluids resistance, improve reservoir permeability, improve the cyclic steam stimulation effect.
Background technology:
The Liaohe Oil Field is the oil field based on heavy crude producing, and heavy oil production accounts for more than 70% of ultimate production.At present, the main mode of viscous oil recovery is a steam stimulation, and in the Liaohe Oil Field, this mining type extraction viscous crude amount accounts for 95% of total amount.
Along with the continuous development of exploratory development, cyclic steam stimulation is to the intermediary and later stages, and along with the continuous extraction of resident fluid, producing energy successively decreases soon, and the back fluid rate of yield of handling up is slow, and recovery percent of reserves is low, handles up effect worse and worse.Simultaneously, in the process reservoir is caused various injuries, also greatly influence the effect of handling up because each round is handled up.In order to improve the steam stimulation effect, improve the fluid rate of yield, the various injuries that the releasing process of handling up produces, the various notes vapour of field by using additive, as cleanup additive, viscosity-depression agent, the anti-breakdown of emulsion of high temperature, thin film spreading agent etc., though improve the effect of handling up to a certain extent, yet to many rounds (more than 6 rounds) well of handling up, when the stratum deficit was serious, at present on-the-spot employed various interpolations all were difficult to obtain unusual effect.Reproduce needs for satisfying the volume increase of cyclic steam stimulation later stage, must develop more effective chemical assistant.In the heavy crude heat extraction process, cause the major cause of steam-stimulated well injury a lot, the central factor that can after all damage is the obstruction that descends and bring owing to producing energy, being applied to remove the steam stimulation process, to damage, improve the measure of the effect of handling up also a lot, can desire to obtain remarkable measure effect, also must utilize producing energy, otherwise be difficult to obtain unusual effect.For this reason, desire is removed the injury of steam stimulation process, recovers oil well productivity, and the gordian technique that improves the effect of handling up is how to recover producing energy rapidly.
Summary of the invention:
The objective of the invention is to develop a kind of chemical assistant, it is reacted rapidly at formation condition, emit a large amount of gases, when replenishing producing energy raising drawing speed, water recovery rate rapidly, also reduce viscosity of crude, reduce the formation fluids resistance, remove the process injury of handling up, improve reservoir permeability, thereby improve the cyclic steam stimulation effect.
Cryogenic self-generating gas composite agent, be under formation condition, A, B agent are by means of composite catalyst, made originally and can only under high temperature (190 ℃) condition, decompose the chemical reaction of emitting gas, also can under low temperature (10-65 ℃ of may command) condition, react and produce a large amount of gases, principle reaction equation:
Primary reaction:
Reaction of higher order:
The main component of A, B agent, composite catalyst sees Table 1.
Table 1 cryogenic self-generating gas composite agent constitutes component and concentration ratio
Cryogenic self-generating gas composite agent, indoor energization test result sees Table 2.
Table 2 cryogenic self-generating gas composite agent is handled volumetric spaces pressure change measurement result
| A/B | A+B volume number (ml) | System pressure (atm) before the reaction | 100 times of volumetric spaces pressure (atm) are surveyed in the reaction back |
| 1：1 | 50 | 0 | 5.0 |
| 1：1 | 100 | 0 | 4.98 |
| 1：1 | 200 | 0 | 4.95 |
Embodiment:
Embodiment 1: synthetic 1 ton of A agent, B agent 1m
3Cryogenic self-generating gas composite agent
0.55 ton of carboxamide is mixed with 0.45 ton of low carbon mixed organic acid (m=1), stirred 30 minutes, then with the promptly synthetic 1 ton of A agent of band polyethylene liner 50Kg bag hermetic package with 60r/min speed.0.3 ton of composite catalyst is mixed with 0.7 ton of sulfonate cleanup additive (n=12), stirred 60 minutes, pack promptly synthetic 1 ton of B agent with the 25Kg plastic tank then with 60r/min speed.
Embodiment 2: synthetic 1 ton of A agent, B agent 1m
3Cryogenic self-generating gas composite agent
0.6 ton of carboxamide is mixed with 0.4 ton of low carbon mixed organic acid (m=1), stirred 30 minutes, then with the promptly synthetic 1 ton of A agent of band polyethylene liner 50Kg bag hermetic package with 60r/min speed.0.35 ton of composite catalyst is mixed with 0.65 ton of sulfonate cleanup additive (n=12), stirred 60 minutes, pack promptly synthetic 1 ton of B agent with the 25Kg plastic tank then with 60r/min speed.
Embodiment 3: synthetic 1 ton of A agent, B agent 1m
3Cryogenic self-generating gas composite agent
0.65 ton of carboxamide is mixed with 0.35 ton of low carbon mixed organic acid (m=1), stirred 30 minutes, then with the promptly synthetic 1 ton of A agent of band polyethylene liner 50Kg bag hermetic package with 60r/min speed.0.4 ton of composite catalyst is mixed with 0.6 ton of sulfonate cleanup additive (n=12), stirred 60 minutes, pack promptly synthetic 1 ton of B agent with the 25Kg plastic tank then with 60r/min speed.
The rig-site utilization example:
Embodiment 3 synthetic cryogenic self-generating gas composite agents (the A agent: B agent=1:1),, reproduce at oil recovery factory, Jinzhou, Liaohe Oil Field rig-site utilization 5 wells time energization in August, 2004, obtain remarkable effect of increasing production, measure effect sees Table 3.
Table 3 low temperature oozes the on-the-spot effect of increasing production statistics of luring property from self-conceit volume recombination agent raising
Claims (2)
1 one kinds of cryogenic self-generating gas composite agents, include A agent and B agent, the A agent contains carboxamide and low carbon mixed organic acid, and the B agent contains composite catalyst and sulfonate cleanup additive, it is characterized in that A agent, B agent mix the mass ratio that uses and be: 1:1 or 1:1.5 or 1:2;
The low carbon mixed organic acid of above-mentioned A agent is CH
3(CH
2)
mCOOH, m are 1 or 2 or 3; A agent carboxamide component and low carbon mixed organic acid component content are respectively: 55～65 weight % and 45～35 weight %;
The composite catalyst of above-mentioned B agent is NaNO
2And HClO, weight ratio is 1:1; The sulfonate cleanup additive is C
nH
mSO
3Na, m=2n in the molecular formula, n are 10 or 11 or 12; B agent composite catalyst component and sulfonate cleanup additive component content are respectively 30～40 weight % and 70～60 weight %.
2 one kinds of cryogenic self-generating gas composite agents as claimed in claim 1, carboxamide wherein are H
2N-CO-NH
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610113487XA CN100537701C (en) | 2006-09-29 | 2006-09-29 | Low-temperature self-generated gas complexing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610113487XA CN100537701C (en) | 2006-09-29 | 2006-09-29 | Low-temperature self-generated gas complexing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101074366A CN101074366A (en) | 2007-11-21 |
| CN100537701C true CN100537701C (en) | 2009-09-09 |
Family
ID=38975640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610113487XA Active CN100537701C (en) | 2006-09-29 | 2006-09-29 | Low-temperature self-generated gas complexing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100537701C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153994B (en) * | 2011-01-30 | 2013-07-10 | 中国石油天然气股份有限公司 | High-temperature miscible phase temporary plugging channeling sealing agent and preparation method thereof |
| CN103224775B (en) * | 2013-04-03 | 2015-08-05 | 中国石油天然气股份有限公司 | Low-carbon mixed organic acid for oil well blockage removal and preparation method and application thereof |
| CN113107441B (en) * | 2021-05-12 | 2022-09-23 | 大庆辰平钻井技术服务有限公司 | Drainage-assisting and energy-increasing effect-improving method for open hole oil layer of ultra-short radius horizontal well |
-
2006
- 2006-09-29 CN CNB200610113487XA patent/CN100537701C/en active Active
Non-Patent Citations (4)
| Title |
|---|
| 化学增效降粘助排技术在稠油油藏中的应用. 王静伟等.西部探矿工程，第2005年第11期. 2005 |
| 化学增效降粘助排技术在稠油油藏中的应用. 王静伟等.西部探矿工程，第2005年第11期. 2005 * |
| 尿素在稠油油藏注蒸汽开发中的实验研究及应用. 沈德煌等.特种油气藏，第12卷第2期. 2005 |
| 尿素在稠油油藏注蒸汽开发中的实验研究及应用. 沈德煌等.特种油气藏，第12卷第2期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101074366A (en) | 2007-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104234675B (en) | Method for activating endogenous microorganism oil displacement of oil reservoir after polymer oil displacement | |
| CN102022105B (en) | Large composite acid fracturing method of fracture cave type carbonate rock reservoir | |
| CN102116143A (en) | Method for extracting oil by utilizing indigenous microbe of oil pool subjected to polymer flooding | |
| CN107216866B (en) | A kind of method of Carbonate Reservoir seam dictyosome product acidfracturing treatment | |
| CN101633839A (en) | 200-DEG C super-high temperature fracturing fluid | |
| CN103320797A (en) | Water-soluble non-ionic imidazoline corrosion inhibitor and preparation method thereof | |
| CN100537701C (en) | Low-temperature self-generated gas complexing agent | |
| CN101539012A (en) | Stratum catalytic oxidation thick oil thermal recovery method | |
| CN110256275A (en) | A kind of preparation method of salt-resistant type amphoteric ion hydrophobic associated polymer and the application on fracturing fluid | |
| CN109762549A (en) | Efficient self-gas-production foam fracturing fluid and construction method | |
| CN107100601A (en) | A kind of method for improving endogenous microbes oil reservoirs recovery ratio | |
| CN104502524A (en) | Screening method of indigenous microbe activator with profile control function | |
| CN101845298B (en) | Oil-soluble viscosity reducer for extremely-viscous oil | |
| CN103573244A (en) | Method for fracturing guanidine gum in coal bed gas development based on low-temperature gum breaking | |
| CN102838978B (en) | Preparation method and application of autogeneration gas foam composite oil-displacing agent under shaft | |
| CN107795306A (en) | A kind of method that low-permeability oil deposit endogenous microbes are recovered the oil | |
| RU2349742C1 (en) | Method of oil deposit development | |
| CN103421475B (en) | Oil well deep composite plugging profile control agent and application thereof | |
| CN105156083A (en) | Indigenous microorganism drive reservoir adaptability evaluating method | |
| CN101949282B (en) | Oil displacement method for residual oil asphalt emulsion | |
| CN101298555A (en) | Harmless clean fracturing fluid | |
| CN103342997A (en) | Acyl (-N,N-dialkyl) diamine surfactant and preparation method and application thereof | |
| CN102942911B (en) | Hydrogenation hot gas chemical yield increasing solution component applied to low-yield low-permeability oil well | |
| CN110097254A (en) | The dynamic evaluation method of multielement hot fluid oil reservoirs potentiality | |
| CN105967306A (en) | Water-soluble polymer solution degradation agent and preparation method and application thereof |
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 |