CN108822816A - A kind of molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine and preparation method thereof - Google Patents
A kind of molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine and preparation method thereof Download PDFInfo
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- CN108822816A CN108822816A CN201810662240.6A CN201810662240A CN108822816A CN 108822816 A CN108822816 A CN 108822816A CN 201810662240 A CN201810662240 A CN 201810662240A CN 108822816 A CN108822816 A CN 108822816A
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/44—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
Abstract
The invention discloses a kind of loose sand molten GEL USED FOR PLUGGING WELL LOST CIRCULATIONs of high-intensitive theobromine and preparation method thereof, the sealing agent is made of component one, component two, component three and component four, and component one forms 10 parts of -15 parts of acrylamides, 3 parts of -5 parts of modified propylene amides, 3 parts of -5 parts of modified acroleic acid hydroxyl ethyl esters, 75 parts of -84 parts of water by the raw material of following mass fraction and forms；Component two is made of 3 parts of -5 parts of bentonites, 95 parts of -97 parts of water；Component three is made of 0.05 part of -0.2 part of water-soluble slow-releasing capsule crosslinking agent, 0.3 part of -0.5 part of water-soluble slow-releasing capsule curing agent, 99.3 parts of -99.65 parts of water；Component four is 3 parts of -5 parts of acid catalysis capsule breakers, 0.3 part of -0.5 part of surfactant and 96.7 parts of -94.5 parts of water compositions, dissolves acid-soluble peel by control acidification and discharges gel breaker, realize broken glue, releases closure of the sealing agent to Reservoir Seepage channel.
Description
Technical field
The invention belongs to oilfield drilling fields more particularly to the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of theobromine and preparation method thereof.
Background technique
Missing complexity is one of main drilling complexity during being drilled well, when frequently generation leakage complexity will lead to complexity
Effect increases, drilling period extends, drilling cost increases.Particularly, Reservoir Section is frequently missed, and can also cause serious reservoir damage
Evil, influences reservoir productivity.Interior leak stopping difficulty is still a bottleneck for restricting oil reservoir Efficient Development greatly at the international level at present, especially
It is Reservoir Section leakage, existing leakage stopping technology is difficult to take into account efficient leak stopping and reservoir protection.The permeability of loose sand reservoir is usual
It can achieve 5 darcies, reach as high as tens darcies, reservoir throat distribution is wide.In drilling process, conventional dissolvable particulate species are stifled
Leakage agent is difficult to efficiently block such stratum, causes leak stopping success rate low, Reservoir Section drilling time is long, influences the production capacity of reservoir.Cause
This, needs the sealing agent that exploitation is suitable for loose sand, improves leak stopping success rate, reduces leak-off losses.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine and preparation method thereof, it should
The molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of theobromine has that earth's surface good fluidity, crosslinking time be controllable, the big retention of viscosity is strong after plastic, intensity is high,
Reservoir bearing capacity can be effectively improved, can be acidified brokenly glue after breaking gel viscosity it is low easily the row of returning the characteristics of.It is multiple to reduce leakage
The miscellaneous processing time reduces leakage and leak stopping is damaged caused by reservoir, is conducive to shorten drilling period, finds oil-gas Layer and big
Amplitude improves recovery ratio.
The invention is realized by the following technical scheme：
A kind of molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine presses 1 by following four component:1:1:1 volume ratio composition：
Component one is by mass parts by 10 parts of -15 parts of acrylamides, 3 parts of -5 parts of modified propylene amides, 3 parts of -5 parts of modified propylenes
Sour hydroxyl ethyl ester, 75 parts of -84 parts of water compositions；
Component two is made of by mass parts 3 parts of -5 parts of bentonites, 95 parts of -97 parts of water；
Component three is delayed by mass parts by 0.05 part of -0.2 part of water-soluble slow-releasing capsule crosslinking agent, 0.3 part of -0.5 part of water solubility
Release capsule curing agent, 99.3 parts of -99.65 parts of water compositions；
Component four is by mass parts by 3 parts of -5 parts of acid catalysis capsule breakers, 0.3 part of -0.5 part of surfactant and 96.7
- 94.5 parts of water compositions of part.
The modified propylene amide be N hydroxymethyl acrylamide, N- hydroxyethyl acrylamide, methine bisacrylamide,
The blend of one or more of Diacetone Acrylamide.
The modified acroleic acid hydroxyl ethyl ester is hydroxyethyl methacrylate, one of methacrylic acid ethyl acetoacetate
Or a variety of blend.
The surfactant is including but not limited to Nonyl pheno silicon ether, dimethyl diethoxysilane-ethylene
Ethyl triethoxy silicane alkyl copolymer, dodecyl ether sulfate ammonium, alkyl phenol polyoxyethylene ether, laureth sulfuric ester ammonium.
The water-soluble slow-releasing capsule curing agent capsule-core is four gas phthalic anhydrides, hexahydrophthalic anhydride, Sanya
The blend of one or more of tetramine.
The main component of the water-soluble slow-releasing capsule curing agent peel is polyvinylidene chloride copolymer, Methyl cellulose
Element, one of ethyl cellulose.
The acid catalysis capsule breaker capsule-core is one of potassium peroxydisulfate, ammonium persulfate, peroxidating formic acid.
The water-soluble slow-releasing capsule crosslinking agent capsule-core is -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl, hydrogen oxide
One of diisopropylbenzene (DIPB), cumyl peroxide, zinc oxide or or a variety of blend.
The water-soluble slow-releasing capsule crosslinking agent, acid catalysis capsule breaker peel be chitosan class, acid fiber by polylactic
The mixture of one or both of class.
The preparation method of the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine of the present invention, includes the following steps：
(1) component one, component two, component three, four aqueous solution of component are successively prepared respectively；
(2) by component one, component two, component three, component four with 1:1:1:1 volume ratio is puddled uniformly.
Beneficial effects of the present invention are that loose sand can be controlled with the high-intensitive molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of theobromine by spansule
Gelation time, can be accurately by gelation time control in 5-60min, to realize the control starched leak stopping in stratum plastic depth
System improves leak stopping precision, reduces leak stopping slurry in pit shaft or the risk of annular space plastic；The rubber plug toughness formed after plastic is strong, 10MPA
It is not crushed, does not flow under pressure, can be good at residing in leakage channel, improve the success rate of leak stopping；The gel of formation can
It is acidified de-plugging, viscosity < 20mPa.s, the easily row of returning after de-plugging, reduction is damaged caused by reservoir.
Specific embodiment
Embodiment 1
10 parts of acrylamides are weighed first to be dissolved in 84 parts of water, are stirring evenly and then adding into 3 parts of Diacetone Acrylamide,
3 parts of methacrylic acid ethyl acetoacetates are stirring evenly and then adding into, 10min is stirred under the conditions of revolving speed is 5000 turns/min, makes
It is uniformly dispersed, forms component one.
In 97 parts of water, 3 parts of bentonite is added, stirs 30min under the conditions of revolving speed is 2000 turns/min, makes to disperse
Uniformly, defoaming is stood, component two is formed.
0.05 part of water-soluble slow-releasing capsule crosslinking agent is once added in 99.65 parts of water, and (capsule-core is that hydrogen peroxide two is different
Propyl benzene, peel are chitosan) and 0.3 part of water-soluble slow-releasing capsule curing agent (capsule-core is hexahydrophthalic anhydride, and peel is poly-
Vinylidene chloride copolymer), 20min is stirred under the conditions of revolving speed is 2000 turns/min, makes to be uniformly dispersed, forms component three.
Addition is firstly added 0.3 part of Nonyl pheno silicon ether in 96.7 parts of water, under the conditions of 500 turns/min
5min is stirred, 3 parts of acid catalysis capsule breakers (capsule-core is peroxidating formic acid, and peel is acid fiber by polylactic) is then added, is turning
Speed stirs 20min under the conditions of being 2000 turns/min, makes to be uniformly dispersed, and forms component four.
By component one, component two, component three and component 41:1:1:1 ratio mixing.Mixing is that now component two is added
Component is a kind of, stirs 30min under the conditions of revolving speed is 2000 turns/min, and component one then is added in component three and component two mixes
In solution afterwards, 5min is stirred under the conditions of revolving speed is 2000 turns/min, component four is then added, is 500 turns/min in revolving speed
Under the conditions of stir 10min, complete the loose sand preparation of the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of high-intensitive theobromine.
Embodiment 2
12 parts of acrylamides are weighed first to be dissolved in 80 parts of water, are stirring evenly and then adding into 4 parts of N- hydroxylethyl acyl
Amine is stirring evenly and then adding into 4 parts of hydroxyethyl methacrylates, stirs 10min under the conditions of revolving speed is 5000 turns/min, makes to disperse
Uniformly, component one is formed.
In 96 parts of water, 4 parts of bentonite is added, stirs 30min under the conditions of revolving speed is 2000 turns/min, makes to disperse
Uniformly, defoaming is stood, component two is formed.
0.1 part of water-soluble slow-releasing capsule crosslinking agent is once added in 99.4 parts of water, and (capsule-core is hydrogen peroxide diisopropyl
Benzene, peel are chitosan) and 0.5 part of water-soluble slow-releasing capsule curing agent (capsule-core is trien, and peel is Methyl cellulose
Element), 20min is stirred under the conditions of revolving speed is 2000 turns/min, makes to be uniformly dispersed, forms component three.
Addition is firstly added 0.5 part of alkyl phenol polyoxyethylene ether in 95.5 parts of water, stirs under the conditions of 500 turns/min
5min is mixed, 4 parts of acid catalysis capsule breakers (capsule-core is peroxidating formic acid, and peel is acid fiber by polylactic) is then added, in revolving speed
To stir 20min under the conditions of 2000 turns/min, makes to be uniformly dispersed, form component four.
By component one, component two, component three and component 41:1:1:1 ratio mixing.Mixing is that now component two is added
Component is a kind of, stirs 30min under the conditions of revolving speed is 2000 turns/min, and component one then is added in component three and component two mixes
In solution afterwards, 5min is stirred under the conditions of revolving speed is 2000 turns/min, component four is then added, is 500 turns/min in revolving speed
Under the conditions of stir 10min, complete the loose sand preparation of the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of high-intensitive theobromine.
Embodiment 3
15 parts of acrylamides are weighed first to be dissolved in 75 parts of water, are stirring evenly and then adding into 5 parts of the double acryloyls of methine
Amine, is stirring evenly and then adding into 2 parts of hydroxyethyl methacrylates, and 3 parts of methacrylic acid ethyl acetoacetates are 5000 in revolving speed
Turn/min under the conditions of stir 10min, make to be uniformly dispersed, formed component one.
In 95 parts of water, 5 parts of bentonite is added, stirs 30min under the conditions of revolving speed is 2000 turns/min, makes to disperse
Uniformly, defoaming is stood, component two is formed.
0.15 part of water-soluble slow-releasing capsule crosslinking agent is once added in 99.45 parts of water, and (capsule-core is that hydrogen peroxide two is different
Propyl benzene, peel are chitosan) and 0.5 part of water-soluble slow-releasing capsule curing agent (capsule-core is trien, and peel is that ethyl is fine
Dimension element), 20min is stirred under the conditions of revolving speed is 2000 turns/min, makes to be uniformly dispersed, forms component three.
Addition is firstly added 0.5 part of laureth sulfuric ester ammonium in 94.5 parts of water, under the conditions of 500 turns/min
5min is stirred, 5 parts of acid catalysis capsule breakers (capsule-core is ammonium persulfate, and peel is chitosan) are then added, are in revolving speed
20min is stirred under the conditions of 2000 turns/min, makes to be uniformly dispersed, forms component four.
By component one, component two, component three and component 41:1:1:1 ratio mixing.Mixing is that now component two is added
Component is a kind of, stirs 30min under the conditions of revolving speed is 2000 turns/min, and component one then is added in component three and component two mixes
In solution afterwards, 5min is stirred under the conditions of revolving speed is 2000 turns/min, component four is then added, is 500 turns/min in revolving speed
Under the conditions of stir 10min, complete the loose sand preparation of the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of high-intensitive theobromine.
Embodiment 4
15 parts of acrylamides are weighed first to be dissolved in 79 parts of water, are stirring evenly and then adding into 2 parts of the double acryloyls of methine
Amine, 1 part of Diacetone Acrylamide are stirring evenly and then adding into 3 parts of methacrylic acid ethyl acetoacetates, revolving speed be 5000 turns/
10min is stirred under the conditions of min, makes to be uniformly dispersed, and forms component one.
In 97 parts of water, 3 parts of bentonite is added, stirs 30min under the conditions of revolving speed is 2000 turns/min, makes to disperse
Uniformly, defoaming is stood, component two is formed.
0.15 part of water-soluble slow-releasing capsule crosslinking agent is once added in 99.45 parts of water, and (capsule-core is that hydrogen peroxide two is different
Propyl benzene, peel are chitosan) and 0.4 part of water-soluble slow-releasing capsule curing agent (capsule-core is hexahydrophthalic anhydride, and peel is poly-
Vinylidene chloride copolymer), 20min is stirred under the conditions of revolving speed is 2000 turns/min, makes to be uniformly dispersed, forms component three.
Addition is firstly added 0.3 part of dimethyl diethoxysilane-vinyl triethoxyl silicon in 96.2 parts of water
Alkyl copolymer stirs 5min under the conditions of 500 turns/min, and 3.5 parts of acid catalysis capsule breakers are then added, and (capsule-core is peroxidating
Formic acid, peel are acid fiber by polylactic), 20min is stirred under the conditions of revolving speed is 2000 turns/min, makes to be uniformly dispersed, forms component
Four.
By component one, component two, component three and component 41:1:1:1 ratio mixing.Mixing is that now component two is added
Component is a kind of, stirs 30min under the conditions of revolving speed is 2000 turns/min, and component one then is added in component three and component two mixes
In solution afterwards, 5min is stirred under the conditions of revolving speed is 2000 turns/min, component four is then added, is 500 turns/min in revolving speed
Under the conditions of stir 10min, complete the loose sand preparation of the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of high-intensitive theobromine.
Properties of product test
1. the loose sand prepared according to example 1-5 is immediately placed in the high-intensitive molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of theobromine and is set as 50
DEG C, 75 DEG C, 100 DEG C, 125 DEG C, the reaction of 150 DEG C of high temperatures, measured respectively using range estimation code method 1min after being put into baking oven,
5min, 10min, 20min, 30min, 40min, 50min, 60min, 70min sealing agent intensity.
After 2. the high-intensitive molten GEL USED FOR PLUGGING WELL LOST CIRCULATION intensity of theobromine of the loose sand that example 1-5 is prepared reaches maximum, by gel
Sealing agent is immersed in 20%HCl, the viscosity of measurement GEL USED FOR PLUGGING WELL LOST CIRCULATION after breaking gel.
3. the experimental results are shown inthe following table：
1 different formulations loose sand of table estimates code intensity with the high-intensitive molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of theobromine
Annotation：
A：Not plastic, system viscosity is suitable with polymer viscosity, visually observes the formation less than gel；
B：The viscosity of high fluidity gel, gel rubber system is slightly above polymer solution viscosity；
C：The overwhelming majority gel flowable other end to bottle when mobility gel overturns vial；
D：When moderate flow gel overturns vial, fraction gel (< 15%) cannot flow to the other end of bottle,
Often exist with tongue type；
E：When hardly flow-gel overturns vial, a small amount of gel can slowly flow to the other end, most of (> 15%)
Do not have mobility；
F：Flow-gel gel cannot not flow to bottleneck when overturning vial for high deformation；
G：Moderate deformation not flow-gel overturn when, the middle part of vial can only be flowed；
H：Slight deformation not flow-gel overturn when, only deformation occurs for gel surface；
I：When rigid gel is overturn, deformation occurs for gel surface；
J：When net rigid gel shakes vial, the mechanical oscillation as tuning fork can be felt.
2 different formulations loose sand of the table molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of high-intensitive theobromine viscosity after breaking gel
From Tables 1 and 2 it is found that product of the present invention is under the conditions of 50-150 DEG C after abundant plastic, gel strength reaches range estimation
The J grade of code highest level has very strong sealing characteristics to loose sand reservoir macrovoid.By control crosslinking agent, curing agent,
The concentration of polymer, can be by gelation time control in 5-60min.After closure, rubber plug discharges broken glue after reacting with 20% HCl
Agent, sealing agent viscosity < 20mPa.s, the easily row of returning, will not cause loose sand reservoir obviously to damage after breaking gel.
Claims (10)
1. a kind of molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine, which is characterized in that press 1 by following four component:1:1:1 volume ratio
Composition：
Component one is by mass parts by 10 parts of -15 parts of acrylamides, 3 parts of -5 parts of modified propylene amides, 3 parts of -5 parts of modified acroleic acid hydroxyls
Ethyl ester, 75 parts of -84 parts of water compositions；
Component two is made of by mass parts 3 parts of -5 parts of bentonites, 95 parts of -97 parts of water；
Component three is by mass parts by 0.05 part of -0.2 part of water-soluble slow-releasing capsule crosslinking agent, 0.3 part of -0.5 part of water-soluble slow-releasing glue
Capsule curing agent, 99.3 parts of -99.65 parts of water compositions；
Component four is by mass parts by 3 parts of -5 parts of acid catalysis capsule breakers, 0.3 part of -0.5 part of surfactant and 96.7 parts -
94.5 parts of water compositions.
2. the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine as described in claim 1, which is characterized in that the modified propylene amide
For N hydroxymethyl acrylamide, N- hydroxyethyl acrylamide, methine bisacrylamide, one of Diacetone Acrylamide or
Several blends.
3. the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine as described in claim 1, which is characterized in that the modified acroleic acid hydroxyl
Ethyl ester is hydroxyethyl methacrylate, one of methacrylic acid ethyl acetoacetate or a variety of blends.
4. the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine as described in claim 1, which is characterized in that the surfactant packet
Contain but is not limited to Nonyl pheno silicon ether, dimethyl diethoxysilane-vinyltriethoxysilane copolymer, 12
Alkyl alcohol ether ammonium sulfate, alkyl phenol polyoxyethylene ether, laureth sulfuric ester ammonium.
5. the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine as described in claim 1, which is characterized in that the water-soluble slow-releasing glue
Capsule curing agent capsule-core is one or more of four gas phthalic anhydrides, hexahydrophthalic anhydride, trien
Blend.
6. the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine as described in claim 1, which is characterized in that the water-soluble slow-releasing glue
The main component of capsule curing agent peel is polyvinylidene chloride copolymer, methylcellulose, one of ethyl cellulose.
7. the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine as described in claim 1, which is characterized in that the acid catalysis capsule is broken
Jelly capsule-core is one of potassium peroxydisulfate, ammonium persulfate, peroxidating formic acid.
8. the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine as described in claim 1, which is characterized in that the water-soluble slow-releasing glue
Capsule crosslinking agent capsule-core be -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl, hydrogen oxide diisopropylbenzene (DIPB), cumyl peroxide,
One of zinc oxide or or a variety of blend.
9. the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine as described in claim 1, which is characterized in that the water-soluble slow-releasing glue
Capsule crosslinking agent, acid catalysis capsule breaker peel be chitosan class, the mixture of one or both of acid fiber by polylactic class.
10. the preparation method of the molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine described in claim 1, which is characterized in that including following
Step：
(1) component one, component two, component three, four aqueous solution of component are successively prepared respectively；
(2) by component one, component two, component three, component four with 1:1:1:1 volume ratio is puddled uniformly.
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| CN201810662240.6A CN108822816A (en) | 2018-06-25 | 2018-06-25 | A kind of molten GEL USED FOR PLUGGING WELL LOST CIRCULATION of loose sand theobromine and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825269A (en) * | 2019-03-12 | 2019-05-31 | 中国石油大学(华东) | Shear loading type GEL USED FOR PLUGGING WELL LOST CIRCULATION and the preparation method and application thereof |
| CN113388378A (en) * | 2020-03-13 | 2021-09-14 | 中石化南京化工研究院有限公司 | Novel slow-expansion plugging material and preparation method thereof |
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| CN113388378A (en) * | 2020-03-13 | 2021-09-14 | 中石化南京化工研究院有限公司 | Novel slow-expansion plugging material and preparation method thereof |
| CN113388378B (en) * | 2020-03-13 | 2023-01-31 | 中石化南京化工研究院有限公司 | Novel slow expansion plugging material and preparation method thereof |
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