CN107513382A - A kind of clean sand carrier and preparation method thereof - Google Patents
A kind of clean sand carrier and preparation method thereof Download PDFInfo
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- CN107513382A CN107513382A CN201610438232.4A CN201610438232A CN107513382A CN 107513382 A CN107513382 A CN 107513382A CN 201610438232 A CN201610438232 A CN 201610438232A CN 107513382 A CN107513382 A CN 107513382A
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- ammonium chloride
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- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
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- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/30—Viscoelastic surfactants [VES]
Abstract
The invention discloses a kind of clean sand carrier, is made up of A agent, B agent and water, wherein, A agent accounts for 3%~10%, B agent and accounts for 0.5%~3%, and water accounts for 87%~96.5%；Wherein, the A agent is made up of surfactant A PG and dimethyl diallyl ammonium chloride homopolymer, and surfactant A PG accounts for 80%~90%, and dimethyl diallyl ammonium chloride homopolymer accounts for 10%~20%；The B agent is composed of the following components：Tallow base dihydroxy ethyl amine oxide 80%~90%, non-ion fluorin surfactant 0.5%~1%, poly-aspartate 0.5%~1%, water 8%~19%.The clean sand carrier of the present invention, have and prevent the swollen, row of helping, scale inhibition function well；Glue, the easily row of returning are broken after construction well, flowback rate is high；Solid-carrying performance is good；It is not easy to form filter cake, leakoff rate is low；Realize easy to operate, reduction construction cost, economical environment-protective, protection oil reservoir, the purpose to increase production and improve productivity.
Description
Technical field
The present invention relates to a kind of clean sand carrier and preparation method thereof.
Background technology
At present, external Oil/gas Well sand control passes through mainly based on mechanical sand control wherein being filled with wire-wrapped screen gravel in sleeve pipe
After constantly improving and developing, to the eighties, the 90% of sand control treatment total amount is accounted for.With the further exploitation in oil field, it is
Meet its complexity and multifarious requirement, reduce oil well operation cost and workover cost, and work out in succession various types of
Sand screen, expansiveness cutting seam sieve tube and fracturing sand control, cross the anti-sand process technologies such as oil pipe sand control.Gravel filling sand prevention is to pass through
Load fluid goes what is completed to carry sand.In this technique, it is natural plant gum that its load fluid is most of, as important composition portion
Point, the quality of its performance plays decisive role to sand controlling result, and to Reservoir Protection, it is most important to improve crude output.
The stoste of load fluid is generally prepared using the macromolecule plant glue with macromolecule by China over the years, this plantation
Thing glue load fluid solid-carrying performance is good, disclosure satisfy that high sand ratio construction requirement, conveniently reaches required Expected Results.With
The progress of investigative technique, natural plant gum slowly expose many shortcomings.After sand control treatment, the anti-liquid measure for being discharged to ground is only injected
The 30%~50% of thing load fluid amount, due to because of residue, absorption, thoroughly can not break glue reside in residue in stratum to oil reservoir
Cause obvious injury, cause reservoir permeability to decline, permanent injury can be caused, to fully improving ultimate recovery not
Profit.
The eighties in last century, the rapid development of molecule synthesis technology, as the feasibility study of load fluid, people have started greatly
The synthetic polymer of scale.After polymer (mainly solid powder) is uniformly dissolved, various additives are added, and take addition
Cross-linking agents, produce higher viscosity and more preferable efficiency of construction.During construction, typically the host of load fluid to be polymerize in advance
Thing is prepared in preparation station with clear water, and scene is moved to tank car, or is prepared at the scene in the container such as pond, tank, thus
Need to expend a great deal of time, expense, program；First polymer is dissolved, can not be constructed in case of exceptional circumstances, what is prepared takes
Sand liquid, crosslinked fluid etc. can be expired rotten, cause largely to waste, and can also cause liquid waste processing difficult, cause to press to surrounding enviroment
Power.
The Low Damage load fluid that the nineties rises reduces reservoir damage problem, and most common is that surfactant takes sand
Liquid.Surfactant is generally small molecule, different from conventional polymer load fluid, and it prepares simple, saving operation；Itself is without solid
It is small to reservoir damage mutually without residue, belong to environmentally friendly load fluid.But in general surfactant load fluid has cost
Height, it is whard to control (especially in gas-bearing formation) to break glue, and filter loss is big and the shortcomings that heat resistance difference.Studies in China clean sand carrier
Direction is substantially to be carried out along the technical research route of foreign countries, still can not solve to exist equally with external clean sand carrier
Problem.
The content of the invention
For above-mentioned prior art, in order to overcome surfactant clean sand carrier formula in the prior art and aspect of performance to exist
Deficiency, the invention provides a kind of superior performance, the Novel clean load fluid continuously prepared can be achieved, the load fluid is by two kinds
Medicament forms, both contact after can automatic plastic, and meet the broken glue of oil or be diluted with water brokenly glue, without crosslinking agent and various additives
It is existing to prevent the swollen, row of helping, scale inhibition function well；Easily the row of returning, flowback rate are high after construction；Because surfactant has good glue
Elasticity and solid-carrying performance is good；It is not easy to form filter cake, leakoff rate is low；It can realize that preparation and construction are combined closely, simplify construction
Program.The invention can be widely applied in the sand control measure of the various wells such as oil well, well.
The present invention is achieved by the following technical solutions：
A kind of clean sand carrier, it is made up of A agent, B agent and water, wherein, A agent accounts for 3%~10%, B agent and accounts for 0.5%~3%,
Water accounts for 87%~96.5%, and each component is by weight percentage (similarly hereinafter)；Wherein, the A agent is by surfactant A PG and diformazan
Base diallyl ammonium chloride homopolymer (PAMDAAC) forms, and surfactant A PG accounts for 80%~90%, dimethyl diallyl
Ammonium chloride homopolymer accounts for 10%~20%；What the B agent was made up of the component of following percetage by weight：Tallow base dihydroxy ethyl
Amine oxide 80%~90%, non-ion fluorin surfactant 0.5%~1%, poly-aspartate 0.5%~1%, water 8%~
19%.
The surfactant A PG, i.e. APG, common are on the market effect content be 50%, 70%, i.e., 50%,
70% aqueous solution, the two is applied to the present invention.
The non-ion fluorin surfactant, purchased from Dongying Shengshi Petroleum Technology Co., Ltd., trade name s-
Fz non-ion fluorin surfactants.
The preparation method of the clean sand carrier, comprises the following steps：
(1) A agent is prepared：Surfactant A PG is mixed with dimethyl diallyl ammonium chloride homopolymer, stirred under normal temperature
Dissolving, mix, produce A agent；
(2) B agent is prepared：Each component is mixed, stirring and dissolving under normal temperature, mix, produce B agent；
(3) clean sand carrier is prepared：Under stirring condition, first B agent is added to the water, adds A agent (by the side of dropwise addition
Formula add), stir 10~30s, you can quickly form uniform clean sand carrier, the clean sand carrier viscosity formed be 60~
120mpa.s (scene be pumped into well, save horsepower), proppant sinking speed are less than 0.1m/min, heatproof resistant to shearing energy at 110 DEG C
Power is more than 30mPa.s, and residue rate is less than 0.5% after breaking gel, and performance is better than conventional cleaning load fluid of the prior art.
The clean sand carrier of the present invention, in raw materials used, the surfactant A PG in A agent and the tallow base dihydroxy in B agent
Ethyl amine oxide contacts, and can quickly rise viscous, plays the effect of taking sand.Used dimethyl diallyl ammonium chloride homopolymer
(PAMDAAC) it is a kind of cation low polymer, in addition to viscous effect has been promoted, moreover it is possible to which absorption is played very on stratum
Good anti-swollen steady sand function.Used non-ion fluorin surfactant, which can reduce, returns discharge opeing surface and interface tension force, so as to reach very
Good helps row function.Used poly-aspartate is a kind of environmentally friendly chelating agent, has good scale inhibition stabilization function.
The clean sand carrier of the present invention, has the advantages that：
1st, operating procedure simple and flexible.A agent in the clean sand carrier of the present invention coordinates with B agent, has and quickly dissolves
Viscous ability, scene can prepare in advance, can also realize online preparation, operating procedure simple and flexible.
2nd, there is anti-swollen steady sand function.The clean sand carrier homopolymer containing dimethyl diallyl ammonium chloride of the present invention, because
This has good preventive effect of expansion in itself, and for anti-dilative up to 80%, it is just swollen with preventing well that scene need not add expansion-resisting agent
Steady sand function and Reservoir Protection performance.
3rd, glue is broken well.The load fluid of the present invention does not take crosslinking process, meets oil from broken glue, meets water-dilutable and break glue, break glue
Low to reservoir damage rate afterwards without residue, Reservoir Protection is good.
4th, scale inhibition function.Poly-aspartate in the clean sand carrier of the present invention is a kind of environmentally friendly chelating agent, has uniqueness
Scale inhibition characteristic, into after stratum, have for a long time deposition scale effect.
5th, row function is helped.Contained fluorine surfactant, which can be reduced effectively, in the clean sand carrier of the present invention returns discharge opeing table circle
Face tension force, there is the good row of helping effect.
6th, load fluid breaking glue solution enters gathering system with crude oil, and crude oil will not be caused disorderly, can assist to be demulsified, cleaning oil
Pipe.
7th, acid resistance is good, can match to form acid fracturing with acid.
The clean sand carrier of the present invention, during concrete application, without various additives such as crosslinking agent, expansion-resisting agent, cleanup additives, this
The clean sand carrier of invention has in itself prevents the swollen, row of helping, scale inhibition function well, can automatic plastic after A, B agent mixing；After construction
Glue, the easily row of returning are broken well, and flowback rate is high；Because surfactant has good viscoplasticity and solid-carrying performance is good；It is not easy to form filter
Cake, leakoff rate are low；It can realize that preparation and construction are combined closely, really realize easy to operate, reduction construction cost, section
About environmental protection, protection oil reservoir, the purpose to increase production and improve productivity.
Embodiment
With reference to embodiment, the present invention is further illustrated.
Involved instrument, reagent, material etc. in following embodiments, it is existing in the prior art unless otherwise noted
Conventional instrument, reagent, material etc., can be obtained by regular commercial sources.Involved experimental method in following embodiments, inspection
Survey method etc., it is existing normal experiment method, detection method etc. in the prior art unless otherwise noted.
In following embodiments, the surfactant A PG, i.e. APG, effective content 70%, i.e., 70% it is water-soluble
Liquid, it is conventional purchased in market.
The non-ion fluorin surfactant, purchased from Dongying Shengshi Petroleum Technology Co., Ltd., trade name s-
Fz non-ion fluorin surfactants.
Embodiment 1 prepares clean sand carrier
It is made up of A agent, B agent and water, wherein, A agent accounts for 6%, B agent and accounts for 2%, and water accounts for 92%, and each component is by weight percentage
Meter；Wherein, the A agent is made up of surfactant A PG and dimethyl diallyl ammonium chloride homopolymer (PAMDAAC), surface
Activating agent APG accounts for 85%, and dimethyl diallyl ammonium chloride homopolymer accounts for 15%；The B agent is by following percetage by weight
Component composition：Tallow base dihydroxy ethyl amine oxide 85%, non-ion fluorin surfactant 0.8%, poly-aspartate 0.7%,
Water 13.5%.
Preparation method is as follows：
(1) A agent is prepared：Surfactant A PG is mixed with dimethyl diallyl ammonium chloride homopolymer, stirred under normal temperature
Dissolving, mix, produce A agent；
(2) B agent is prepared：Each component is mixed, stirring and dissolving under normal temperature, mix, produce B agent；
(3) clean sand carrier is prepared：Under stirring condition, first B agent is added to the water, adds A agent (by the side of dropwise addition
Formula adds), stir 20s, you can quickly form uniform clean sand carrier.The clean sand carrier formed, after testing, viscosity is
100mpa.s, proppant sinking speed are 0.02m/min (being less than 0.1m/min), and heatproof resistant to shearing ability is at 110 DEG C
50mPa.s (is more than 30mPa.s), is better than conventional cleaning load fluid of the prior art without residue, performance after breaking gel.
The clean sand carrier of the present invention, in raw materials used, the surfactant A PG in A agent and the tallow base dihydroxy in B agent
Ethyl amine oxide contacts, and can quickly rise viscous, plays the effect of taking sand.Used dimethyl diallyl ammonium chloride homopolymer
(PAMDAAC) it is a kind of cation low polymer, in addition to viscous effect has been promoted, moreover it is possible to which absorption is played very on stratum
Good anti-swollen steady sand function.Used non-ion fluorin surfactant, which can reduce, returns discharge opeing surface and interface tension force, so as to reach very
Good helps row function.Used poly-aspartate is a kind of environmentally friendly chelating agent, has good scale inhibition stabilization function.
Using the present invention during site operation, extemporaneous preparation can be avoided, draw medicament to go the now with the current situation in scene,
Brief operation time；And sand stabilization is taken in work progress, operation pressure is steady, and effect of increasing production is obvious, and the activity duration is by original
10h is reduced to 4h, time saving and energy saving.
Embodiment 2 prepares clean sand carrier
It is made up of A agent, B agent and water, wherein, A agent accounts for 10%, B agent and accounts for 3%, and water accounts for 87%, and each component is by weight percentage
Meter；Wherein, the A agent is made up of surfactant A PG and dimethyl diallyl ammonium chloride homopolymer (PAMDAAC), surface
Activating agent APG accounts for 80%, and dimethyl diallyl ammonium chloride homopolymer accounts for 20%；The B agent is by following percetage by weight
Component composition：Tallow base dihydroxy ethyl amine oxide 80%, non-ion fluorin surfactant 0.5%, poly-aspartate 0.5%,
Water 19%.
Preparation method is as follows：
(1) A agent is prepared：Surfactant A PG is mixed with dimethyl diallyl ammonium chloride homopolymer, stirred under normal temperature
Dissolving, mix, produce A agent；
(2) B agent is prepared：Each component is mixed, stirring and dissolving under normal temperature, mix, produce B agent；
(3) clean sand carrier is prepared：Under stirring condition, first B agent is added to the water, adds A agent (by the side of dropwise addition
Formula adds), stir 30s, you can quickly form uniform clean sand carrier.The clean sand carrier formed, after testing, viscosity is
120mpa.s, proppant sinking speed are 0.01m/min, and heatproof resistant to shearing ability is 60mPa.s at 110 DEG C, after breaking gel without residual
Slag, performance are better than conventional cleaning load fluid of the prior art.
Patent of the present invention is used during site operation, extemporaneous preparation can be avoided, draws medicament to go to scene now with the current, letter
Short operation time；And sand stabilization is taken in work progress, operation pressure is steady, and effect of increasing production is obvious, and the activity duration is by original 12h
3.5h is reduced to, it is time saving and energy saving.
Embodiment 3 prepares clean sand carrier
It is made up of A agent, B agent and water, wherein, A agent accounts for 3%, B agent and accounts for 0.5%, and water accounts for 96.5%, each component by weight hundred
Divide than meter；Wherein, the A agent is made up of surfactant A PG and dimethyl diallyl ammonium chloride homopolymer (PAMDAAC),
Surfactant A PG accounts for 90%, and dimethyl diallyl ammonium chloride homopolymer accounts for 10%；The B agent is by following weight percent
Several component compositions：Tallow base dihydroxy ethyl amine oxide 90%, non-ion fluorin surfactant 1%, poly-aspartate 1%,
Water 8%.
Preparation method is as follows：
(1) A agent is prepared：Surfactant A PG is mixed with dimethyl diallyl ammonium chloride homopolymer, stirred under normal temperature
Dissolving, mix, produce A agent；
(2) B agent is prepared：Each component is mixed, stirring and dissolving under normal temperature, mix, produce B agent；
(3) clean sand carrier is prepared：Under stirring condition, first B agent is added to the water, adds A agent (by the side of dropwise addition
Formula adds), stir 10s, you can quickly form uniform clean sand carrier.The clean sand carrier formed, after testing, viscosity is
80mpa.s, proppant sinking speed are 0.04m/min, and heatproof resistant to shearing ability is 30mPa.s at 110 DEG C, after breaking gel without residual
Slag, performance are better than conventional cleaning load fluid of the prior art.
Patent of the present invention is used during site operation, extemporaneous preparation can be avoided, draws medicament to go to scene now with the current, letter
Short operation time；And sand stabilization is taken in work progress, operation pressure is steady, and effect of increasing production is obvious, and the activity duration is by original 12h
3.5h is reduced to, it is time saving and energy saving.
Although above-mentioned the embodiment of the present invention is described in conjunction with the embodiments, not the present invention is protected
The limitation of scope, one of ordinary skill in the art should be understood that on the basis of technical scheme, those skilled in the art
Various modifications or deformation that creative work can make need not be paid still within protection scope of the present invention.
Claims (5)
- A kind of 1. clean sand carrier, it is characterised in that：It is made up of A agent, B agent and water, wherein, A agent accounts for 3%~10%, B agent and accounted for 0.5%~3%, water accounts for 87%~96.5%；Wherein, the A agent is by surfactant A PG and dimethyl diallyl ammonium chloride homopolymerization Thing forms, and surfactant A PG accounts for 80%~90%, and dimethyl diallyl ammonium chloride homopolymer accounts for 10%~20%；The B agent is It is made up of the component of following percetage by weight：Tallow base dihydroxy ethyl amine oxide 80%~90%, non-ion fluorin surfactant 0.5%~1%, poly-aspartate 0.5%~1%, water 8%~19%.
- 2. clean sand carrier according to claim 1, it is characterised in that：It is made up of A agent, B agent and water, wherein, A agent accounts for 6%, B agent account for 2%, and water accounts for 92%, and each component is by weight percentage；Wherein, the A agent is by surfactant A PG and dimethyl two Allyl ammonium chloride homopolymer forms, and surfactant A PG accounts for 85%, and dimethyl diallyl ammonium chloride homopolymer accounts for 15%；Institute State what B agent was made up of the component of following percetage by weight：Tallow base dihydroxy ethyl amine oxide 85%, non-ion fluorin surface-active Agent 0.8%, poly-aspartate 0.7%, water 13.5%.
- 3. clean sand carrier according to claim 1, it is characterised in that：It is made up of A agent, B agent and water, wherein, A agent accounts for 10%, B agent account for 3%, and water accounts for 87%, and each component is by weight percentage；Wherein, the A agent is by surfactant A PG and dimethyl Diallyl ammonium chloride homopolymer forms, and surfactant A PG accounts for 80%, and dimethyl diallyl ammonium chloride homopolymer accounts for 20%； What the B agent was made up of the component of following percetage by weight：Tallow base dihydroxy ethyl amine oxide 80%, non-ion fluorin surface are lived Property agent 0.5%, poly-aspartate 0.5%, water 19%.
- 4. clean sand carrier according to claim 1, it is characterised in that：It is made up of A agent, B agent and water, wherein, A agent accounts for 3%, B agent account for 0.5%, and water accounts for 96.5%, and each component is by weight percentage；Wherein, the A agent is by surfactant A PG and diformazan Base diallyl ammonium chloride homopolymer forms, and surfactant A PG accounts for 90%, and dimethyl diallyl ammonium chloride homopolymer accounts for 10%；What the B agent was made up of the component of following percetage by weight：Tallow base dihydroxy ethyl amine oxide 90%, non-ion fluorin table Face activating agent 1%, poly-aspartate 1%, water 8%.
- 5. the preparation method of clean sand carrier according to any one of claims 1 to 4, it is characterised in that：Comprise the following steps：（1）Prepare A agent：Surfactant A PG is mixed with dimethyl diallyl ammonium chloride homopolymer, stirred under normal temperature molten Solution, mix, produce A agent；（2）Prepare B agent：Each component is mixed, stirring and dissolving under normal temperature, mix, produce B agent；（3）Prepare clean sand carrier：Under stirring condition, first B agent is added to the water, adds A agent, stirs 10~30s, i.e. shape Into clean sand carrier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610438232.4A CN107513382A (en) | 2016-06-17 | 2016-06-17 | A kind of clean sand carrier and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610438232.4A CN107513382A (en) | 2016-06-17 | 2016-06-17 | A kind of clean sand carrier and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112646557A (en) * | 2020-12-22 | 2021-04-13 | 北京宝丰春石油技术有限公司 | Cleaning sand-carrying liquid |
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Application publication date: 20171226 |