CN105567188A - Assistant for improving leak stopping performance of cyanogen coagulation leak stopping agent, preparation method thereof, and cyanogen coagulation leak stopping agent - Google Patents
Assistant for improving leak stopping performance of cyanogen coagulation leak stopping agent, preparation method thereof, and cyanogen coagulation leak stopping agent Download PDFInfo
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- CN105567188A CN105567188A CN201410532889.8A CN201410532889A CN105567188A CN 105567188 A CN105567188 A CN 105567188A CN 201410532889 A CN201410532889 A CN 201410532889A CN 105567188 A CN105567188 A CN 105567188A
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Abstract
The invention discloses an assistant for improving the leak stopping performance of a cyanogen coagulation leak stopping agent, a preparation method thereof, and the cyanogen coagulation leak stopping agent. The assistant comprises 5-8wt% of a first retarder, 2-4wt% of a second retarder, 1-3wt% of a foaming agent, 55-65wt% of a solvent, and the balance of water; the first retarder is benzenesulfonyl choride and/benzoyl chloride; and the second retarder is ethylene diamine tetramethylene phosphonic acid sodium. The assistant can effectively control the reaction speed of cyanogen coagulation and water and delay the cyanogen coagulation solidifying time through synergism and compounding effects of above proportions of all above components, improves the compressive strength of the solidified cyanogen coagulation leak stopping agent, and improves the leak stopping effect of the cyanogen coagulation leak stopping agent.
Description
Technical field
The present invention relates to oil-field development class plugging agent field, particularly a kind ofly coagulating auxiliary agent of class plugging agent leak stopping performance and preparation method thereof for improving cyanogen, cyanogen coagulates class plugging agent.
Background technology
In the fractured carbonate rock reservoir oil well operations process of oil field, because construction pressure reduction is too high and reservoir self character, easily in reservoir, forms crack, cause working fluid to miss in a large number along crack, infringement reservoir, and then affect accurate evaluation and the Efficient Development of reservoir.Above-mentioned leakage infringement type is many, degree is high, scale is large, scope is wide, and storey increase design operation is difficult to recover the original production capacity of Oil/gas Well.For example, buried hill carbonate reservoir leakage data shows, reservoir leakage channel, mainly based on crack, with solution cavity and hole, has the advantages that leakage frequency is high, leakage speed is large, based on permeability loss and fractured leakage.And the main Types of carbonate reservoir is crack-hole type reservoir, in such reservoir, crack, hole are grown, and heterogeneous body is strong, very easily misses.As leakage can not control in time, working fluid will transmit in reservoir seam_cavern type, extend to reservoir depths forms severe mud losses, and caused and gone out into nothing, grievous injury reservoir, strengthens intractability further.So be necessary to carry out leak stopping process to the crack in reservoir and hole.
Conventional cement leak stopping and chemical plugging carry out leak stopping process to the crack in reservoir and hole at present.Wherein, cement leak stopping is with oil based cement, superfine cement for leak stopping host, in conjunction with bottom back-up sand or the measure such as cementing plug, lower packet, uses circulation method technique to construct, and has the advantage that blocking intensity is large, the rear persistence of leak stopping success is good.But its weak point is mainly reflected in: 1) cement leak-stopping technique is complicated, and the engineering time is longer, easily causes grout to miss in a large number, and leak stopping success ratio is low, and is attended by serious hydrocarbon contamination; 2) large fracture, cavern leakage consume cement amount greatly, and leak stopping cost is high; 3) cement paste rheological is good, suspension is poor, after it enters plugged zone, is easy to leakage and precipitation, solidifies rear easy contraction, make the success ratio of leak stopping low before solidifying.
And chemical leak-stopping agent, especially cyanogen coagulates class plugging agent, its with polychlorostyrene carbamate for host, have slurry viscosity low, concrete castability can be good, high with sandstone bonding strength, can second permeation and spontaneous expansion, antifungal, acid-and base-resisting, salt, heat-resisting, cold-resistant, oil resistant, the advantage such as chemical-resistant resistance and industrial gaseous waste, meeting water reaction viscosity increases, and generates water-fast congealed solid, there is higher physical strength, be widely used in the plugging operations in oilfield recovery process.
Contriver finds that prior art at least exists following problem:
Cyanogen coagulates class plugging agent and meets water immediate response, and set time is short, causes its leak stopping poor-performing.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, provides a kind ofly to coagulate auxiliary agent of class plugging agent leak stopping performance and preparation method thereof for improving cyanogen, and utilizes the cyanogen of the leak stopping excellent performance prepared by this auxiliary agent to coagulate class plugging agent.Concrete technical scheme is as follows:
First aspect, embodiments providing a kind of auxiliary agent coagulating class plugging agent leak stopping performance for improving cyanogen, comprising the composition of following weight percent: the first retardant 5-8%, the second retardant 2-4%, whipping agent 1-3%, solvent 55-65%, surplus are water;
Described first retardant is benzene sulfonyl chloride and/or Benzoyl chloride;
Described second retardant is ethylene diamine tetra methylene phosphonic acid sodium.
Particularly, as preferably, described whipping agent is polyoxyethylenated alcohol sodium sulfate and/or α-alkene sulfonate.
Particularly, as preferably, described solvent is acetone and/or ethanol.
As preferably, described auxiliary agent comprises the composition of following weight percent: benzene sulfonyl chloride 6-8%, ethylene diamine tetra methylene phosphonic acid sodium 3-4%, polyoxyethylenated alcohol sodium sulfate 2-3%, acetone 58-60%, surplus are water.
As preferably, described auxiliary agent comprises the composition of following weight percent: benzene sulfonyl chloride 6%, ethylene diamine tetra methylene phosphonic acid sodium 4%, polyoxyethylenated alcohol sodium sulfate 3%, acetone 60%, surplus are water.
Second aspect, embodiments provides a kind of cyanogen and coagulates class plugging agent, comprising: cyanogen is solidifying, any one auxiliary agent above-mentioned and water;
It is 1:3-10 that described cyanogen coagulates with the mass ratio of described water;
The mass ratio that described auxiliary agent and described cyanogen coagulate is 1-2.5:50.
Particularly, as preferably, it is that the cyanogen of TPT coagulates that described cyanogen coagulates the model of producing for chemical experimental factory of University Of Tianjin.
The third aspect, embodiments provide a kind of preparation method of above-mentioned auxiliary agent, comprise: according to the proportioning of composition each in auxiliary agent, at the temperature of 35-45 DEG C, the second retardant, whipping agent and solvent are stirred 25-35min, obtains mixture, then in described mixture, the first retardant and water is added, and be cooled to 15-25 DEG C, and continue to stir 35-45min at 15-25 DEG C, obtain described auxiliary agent.
As preferably, described method comprises: according to the proportioning of composition each in auxiliary agent, at the temperature of 40 DEG C, described second retardant, described whipping agent and described solvent are stirred 30min, obtain described mixture, then in described mixture, add described first retardant and described water, and be cooled to 20 DEG C, and continue to stir 40min at 20 DEG C, obtain described auxiliary agent.
Particularly, the pH value of described water is 6.5-7.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The auxiliary agent coagulating class plugging agent leak stopping performance for improving field of oilfield exploitation cyanogen that the embodiment of the present invention provides, by the collaborative complex role between each composition of said ratio, effectively can control cyanogen and coagulate the speed of response with water, postpone the time of cyanogen cure, and the cyanogen after improving solidification coagulates the ultimate compression strength of class plugging agent, improves the plugging effect that cyanogen coagulates class plugging agent simultaneously.
Embodiment
For making technical scheme of the present invention and advantage clearly, below embodiment of the present invention is described further in detail.
First aspect, embodiments providing a kind of auxiliary agent coagulating class plugging agent leak stopping performance for improving cyanogen, comprising the composition of following weight percent: the first retardant 5-8%, the second retardant 2-4%, whipping agent 1-3%, solvent 55-65%, surplus are water;
This first retardant is benzene sulfonyl chloride and/or Benzoyl chloride;
This second retardant is ethylene diamine tetra methylene phosphonic acid sodium.
The auxiliary agent coagulating class plugging agent leak stopping performance for improving field of oilfield exploitation cyanogen that the embodiment of the present invention provides, by the collaborative complex role between each composition of said ratio, effectively can control cyanogen and coagulate the speed of response with water, postpone the time of cyanogen cure, and the cyanogen after improving solidification coagulates the ultimate compression strength of class plugging agent, improves the plugging effect that cyanogen coagulates class plugging agent simultaneously.
Further, after using this auxiliary agent, cyanogen coagulates the feature that class plugging agent is provided with second permeation, and by gaseous tension, uncured cyanogen coagulates crack or the pore space structure that slurries can compress into stratum further, makes it be able to fill completely further closely knit.
In mentioned component, using benzene sulfonyl chloride and/or Benzoyl chloride and ethylene diamine tetra methylene phosphonic acid sodium as retardant, by the collaborative delayed coagulation between two class retardant, this auxiliary agent is made to coagulate in plugging agent for cyanogen, effectively can control cyanogen and coagulate the speed of response with water, improve cyanogen and coagulate plugging agent slurries penetration radius in the earth formation, extend the gel time of slurries, postpone and extend the set time that cyanogen coagulates.Further, also improve the adaptive temperature (60-120 DEG C) of cyanogen cure, make cyanogen coagulate the adaptability of class plugging agent wider.
Be understandable that, " cyanogen coagulates class plugging agent " described in the embodiment of the present invention is state of the art, and the present invention does not do concrete restriction to it at this.That is the auxiliary agent that the embodiment of the present invention provides can be used in all kinds of cyanogen and coagulates class plugging agent, improves its plugging effect.
Because the ultimate compression strength of the curing system obtained after traditional cyanogen cure only has about 10MPa, when high deep-well bottomhole wellbore pressure is 20-30MPa, the volume of cyanogen cure system can not expand, and has a strong impact on its leak stopping performance.Based on this, the embodiment of the present invention adds whipping agent in this auxiliary agent, preferred fat polyoxyethylenated alcohol sodium sulfate and/or α-alkene sulfonate, improve the foam performance of cyanogen cure system, it is made to be expanded to original 3-6 doubly in 20-30MPa lower volume, also wrapping into being equivalent to sole mass 5-10 water doubly simultaneously, making this cyanogen cure System forming have the multipolymer interpenetrating(polymer)networks induration of certain elasticity and intensity.And such whipping agent can also ensure that cyanogen coagulates the modest viscosity of class plugging agent, improves its suitability and stability.Wherein, the chemical formula of polyoxyethylenated alcohol sodium sulfate that the embodiment of the present invention uses is RO (CH
2cH
2o)
n-SO
3na, (n=2 or 3, R is the alkyl containing 12-15 carbon atom).
Visible, the embodiment of the present invention, by adding above-mentioned whipping agent in auxiliary agent, the swelling capacity of the curing system obtained after can strengthening cyanogen cure, further increases the leak stopping performance that cyanogen coagulates class plugging agent.
Particularly, as preferably, this solvent is acetone and/or ethanol.The embodiment of the present invention makes above-mentioned retardant and whipping agent be dispersed evenly by using ethanol.
Further, the embodiment of the present invention additionally provides a kind of preferred auxiliary agent, comprises the composition of following weight percent: benzene sulfonyl chloride 6-8%, ethylene diamine tetra methylene phosphonic acid sodium 3-4%, polyoxyethylenated alcohol sodium sulfate 2-3%, acetone 58-60%, surplus are water.Further, this auxiliary agent preferably includes the composition of following weight percent: benzene sulfonyl chloride 6%, ethylene diamine tetra methylene phosphonic acid sodium 4%, polyoxyethylenated alcohol sodium sulfate 3%, acetone 60%, surplus are water.
Second aspect, embodiments provides a kind of cyanogen and coagulates class plugging agent, comprising: cyanogen coagulates, above-mentioned auxiliary agent and water;
Wherein, cyanogen coagulates with the mass ratio of water is 1:3-10;
The mass ratio that auxiliary agent and cyanogen coagulate is 1-2.5:50.
The above-mentioned cyanogen of the embodiment of the present invention coagulates class plugging agent can at high temperature retardation of curing, and set time is longer; Can also under high pressure foaming and intumescing, ultimate compression strength is higher, and filling volume is large, has excellent leak stopping performance.Use it for the leak stopping in oil extraction process, the problem of plugging effect difference under buried hill fissure, hole complex geological condition can be solved, improve plugging effect and leak stopping success ratio.
Be understandable that, " cyanogen coagulates " material described in the embodiment of the present invention is state of the art, and it is a kind of commercially available product of maturation.For example, in the embodiment of the present invention, it is that the cyanogen of TPT coagulates that this cyanogen coagulates model that preferably chemical experimental factory of University Of Tianjin produces.
The third aspect, embodiments provide a kind of preparation method of above-mentioned auxiliary agent, comprise: according to the proportioning of composition each in auxiliary agent, at the temperature of 35-45 DEG C, the second retardant, whipping agent and solvent are stirred 25-35min, obtains mixture, then in this mixture, the first retardant and water is added, and be cooled to 15-25 DEG C, and continue to stir 35-45min at 15-25 DEG C, obtain described auxiliary agent.
Further, the method comprises: according to the proportioning of composition each in auxiliary agent, at the temperature of 40 DEG C, second retardant, whipping agent and solvent are stirred 30min, obtain mixture, then in this mixture, add the first retardant and water, and be cooled to 20 DEG C, and continue to stir 40min at 20 DEG C, obtain auxiliary agent.
In the method that the embodiment of the present invention provides, the second retardant is dissolved in advance in a solvent after being uniformly dispersed, then add the first retardant and water, to obtain the good auxiliary agent of dispersity.Be understandable that, in the method, this first retardant is benzene sulfonyl chloride and/or Benzoyl chloride; This second retardant is ethylene diamine tetra methylene phosphonic acid sodium.
Further, the pH value of the water used in aforesaid method is 6.5-7.
Below further the present invention will be described by specific embodiment.
The details of the raw material used in following examples are as follows:
Benzene sulfonyl chloride (C
6h
5-SO
2cl), technical pure, Zhenjiang Hui Long Chemical Co., Ltd.;
Benzoyl chloride (C
6h
5-COCl), technical pure, Zhenjiang Hui Long Chemical Co., Ltd.;
Ethylene diamine tetra methylene phosphonic acid sodium (C
6h
12o
12n
2p
4na
8), technical pure, Changzhou Yan Ling Chemical Co., Ltd.;
Polyoxyethylenated alcohol sodium sulfate (AES), chemical pure, petrochemical corporation (complex) of Fushun City;
α-alkene sulfonate (AOS), chemical pure, petrochemical corporation (complex) of Fushun City;
Ethanol, technical pure, Tianjin good fortune chemical reagent factory in morning;
Acetone, technical pure, Tianjin good fortune chemical reagent factory in morning;
Cyanogen coagulates, specification: TPT, chemical experimental factory of University Of Tianjin.
Embodiment 1
Present embodiments provide a kind of auxiliary agent coagulating class plugging agent leak stopping performance for improving cyanogen, this auxiliary agent comprises the composition of following weight percent: benzene sulfonyl chloride 5%, ethylene diamine tetra methylene phosphonic acid sodium 4%, polyoxyethylenated alcohol sodium sulfate 2%, ethanol 62%, surplus are water.
The preparation method of this auxiliary agent is as follows:
According to the weight proportion of above-mentioned each composition, be placed in enamel reaction still by ethylene diamine tetra methylene phosphonic acid sodium, polyoxyethylenated alcohol sodium sulfate and ethanol, heating this enamel reaction still to temperature is 35 DEG C, and stirs above-mentioned substance 35min at such a temperature.Then benzene sulfonyl chloride and water (pH value is 6.5-7) are placed in this ceramic reactor, and 18 DEG C are cooled to this reactor, continue the material 42min in stirred autoclave, namely obtain the auxiliary agent expected.
Embodiment 2
Present embodiments provide a kind of auxiliary agent coagulating class plugging agent leak stopping performance for improving cyanogen, this auxiliary agent comprises the composition of following weight percent: benzene sulfonyl chloride 6%, ethylene diamine tetra methylene phosphonic acid sodium 4%, polyoxyethylenated alcohol sodium sulfate 3%, acetone 60%, surplus are water.
The preparation method of this auxiliary agent is as follows:
According to the weight proportion of above-mentioned each composition, be placed in enamel reaction still by ethylene diamine tetra methylene phosphonic acid sodium, polyoxyethylenated alcohol sodium sulfate and acetone, heating this enamel reaction still to temperature is 40 DEG C, and stirs above-mentioned substance 30min at such a temperature.Then benzene sulfonyl chloride and water (pH value is 6.5-7) are placed in this ceramic reactor, and 20 DEG C are cooled to this reactor, continue the material 40min in stirred autoclave, namely obtain the auxiliary agent expected.
Embodiment 3
Present embodiments provide a kind of auxiliary agent coagulating class plugging agent leak stopping performance for improving cyanogen, this auxiliary agent comprises the composition of following weight percent: Benzoyl chloride 7%, ethylene diamine tetra methylene phosphonic acid sodium 3%, polyoxyethylenated alcohol sodium sulfate 1%, acetone 55%, surplus are water.
The preparation method of this auxiliary agent is as follows:
According to the weight proportion of above-mentioned each composition, be placed in enamel reaction still by ethylene diamine tetra methylene phosphonic acid sodium, polyoxyethylenated alcohol sodium sulfate and acetone, heating this enamel reaction still to temperature is 45 DEG C, and stirs above-mentioned substance 28min at such a temperature.Then Benzoyl chloride and water (pH value is 6.5-7) are placed in this ceramic reactor, and 15 DEG C are cooled to this reactor, continue the material 45min in stirred autoclave, namely obtain the auxiliary agent expected.
Embodiment 4
Present embodiments provide a kind of auxiliary agent coagulating class plugging agent leak stopping performance for improving cyanogen, this auxiliary agent comprises the composition of following weight percent: benzene sulfonyl chloride 8%, ethylene diamine tetra methylene phosphonic acid sodium 2%, α-alkene sulfonate 2.5%, ethanol 65%, surplus are water.
The preparation method of this auxiliary agent is as follows:
According to the weight proportion of above-mentioned each composition, be placed in enamel reaction still by ethylene diamine tetra methylene phosphonic acid sodium, α-alkene sulfonate and ethanol, heating this enamel reaction still to temperature is 38 DEG C, and stirs above-mentioned substance 32min at such a temperature.Then benzene sulfonyl chloride and water (pH value is 6.5-7) are placed in this ceramic reactor, and 20 DEG C are cooled to this reactor, continue the material 35min in stirred autoclave, namely obtain the auxiliary agent expected.
Embodiment 5
Present embodiments provide a kind of auxiliary agent coagulating class plugging agent leak stopping performance for improving cyanogen, this auxiliary agent comprises the composition of following weight percent: Benzoyl chloride 6.5%, ethylene diamine tetra methylene phosphonic acid sodium 3.5%, α-alkene sulfonate 3%, ethanol 60%, surplus are water.
The preparation method of this auxiliary agent is as follows:
According to the weight proportion of above-mentioned each composition, be placed in enamel reaction still by ethylene diamine tetra methylene phosphonic acid sodium, α-alkene sulfonate and ethanol, heating this enamel reaction still to temperature is 40 DEG C, and stirs above-mentioned substance 30min at such a temperature.Then Benzoyl chloride and water (pH value is 6.5-7) are placed in this ceramic reactor, and 25 DEG C are cooled to this reactor, continue the material 39min in stirred autoclave, namely obtain the auxiliary agent expected.
Embodiment 6
The auxiliary agent that the present embodiment utilizes embodiment 1-5 to provide respectively and cyanogen coagulate to prepare cyanogen and coagulate class plugging agent, and adopt shop experiment to test the leak stopping performance that prepared each cyanogen coagulates class plugging agent.
Wherein, above-mentioned each cyanogen composition of coagulating class plugging agent is composed as follows: the auxiliary agent that cyanogen coagulates, embodiment 1-5 provides and water; Wherein, cyanogen coagulates with the mass ratio of water is 1:5; The mass ratio that auxiliary agent and cyanogen coagulate is 1:25.
Wherein, shop experiment concrete steps are as follows: water, cyanogen are coagulated and join in beaker with auxiliary agent according to aforementioned proportion, be placed in the baking oven of 120 DEG C, observe its consolidation situation at any time, to record cyanogen solidifying presetting period and set time, after question response is complete, measure expansion multiple.Laboratory test results is as shown in table 1:
The leak stopping performance test table of table 1 plugging agent
As shown in Table 1, the preparation-obtained cyanogen of the auxiliary agent utilizing embodiment of the present invention 1-5 to provide coagulates plugging agent and is delayed solidification, and set time is longer, and has higher ultimate compression strength, volumetric expansion multiple and Young's modulus, is provided with good leak stopping performance.
Embodiment 7
The auxiliary agent that the present embodiment utilizes embodiment 2 to provide and cyanogen is solidifying to be prepared cyanogen and coagulates class plugging agent, and coagulates plugging agent leak stopping performance at different temperatures to this cyanogen and carry out experiment test.Except experimental temperature difference, this experiment is consistent with the shop experiment that embodiment 6 provides.
Wherein, to coagulate the composition of class plugging agent composed as follows for this cyanogen: the auxiliary agent that cyanogen coagulates, embodiment 2 provides and water; Wherein, cyanogen coagulates with the mass ratio of water is 3:10; The mass ratio that auxiliary agent and cyanogen coagulate is 1:20.
The leak stopping performance of this plugging agent at different experiments temperature is as shown in table 2:
Table 2 plugging agent leak stopping performance test table at different temperatures
As shown in Table 2, the plugging agent retardation of curing that the present embodiment provides, set time is long, and ultimate compression strength is high, has excellent leak stopping performance.And adaptive temperature a wider range (60-120 DEG C) of this plugging agent, has stronger adaptability.
Embodiment 8
The auxiliary agent that the present embodiment utilizes embodiment 2 to provide and cyanogen is solidifying to be prepared cyanogen and coagulates class plugging agent, and uses this cyanogen to coagulate class plugging agent to carry out down-hole leaking stoppage experiment.Wherein, to coagulate the composition of class plugging agent composed as follows for this cyanogen: the auxiliary agent that cyanogen coagulates, embodiment 2 provides and water; Wherein, cyanogen coagulates with the mass ratio of water is 1:10; The mass ratio that auxiliary agent and cyanogen coagulate is 1:22.
This down-hole experimental field adopts dosing pond manual grouting mode, and construction manifold is made up of cementing truck, dosing pond and valve etc.
Grouting step is as follows:
(1) down-hole prepare: be the non-construction interval in preventing pollution top, under enter cannula type bridging plug;
(2) prepare slurries: according to the proportioning of composition each in above-mentioned plugging agent in dosing pond, add clear water that PH is 6.5-7 and cyanogen coagulates, start agitator and stir 30min, then add the auxiliary agent that embodiment 2 provides, continue to stir 10min, stir;
(3) just to note mode connection construction tubing string, by shutoff interval under the slurries Injection Well for preparing;
(4) replace to shutoff interval with clear water;
(5) closing well is waited solidifying after 48 hours, drifting and spy sand face;
(6) brill removes plugging agent induration;
(7) pressure testing tubing string under, pressure testing leak test;
(8) cannula type bridging plug is salvaged;
Result shows, and occurs in well without leakage phenomena, and 30min internal pressure decline 0.2MPa.After oil well drives a well water ratio in oil well decline 20 ~ 30%, day produce oil significantly increase.Visible, the plugging agent that the present embodiment provides demonstrates excellent leak stopping performance.
The foregoing is only preferred embodiment of the present invention, not in order to limit the scope of the invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. coagulating an auxiliary agent for class plugging agent leak stopping performance for improving cyanogen, comprising the composition of following weight percent: the first retardant 5-8%, the second retardant 2-4%, whipping agent 1-3%, solvent 55-65%, surplus are water;
Described first retardant is benzene sulfonyl chloride and/or Benzoyl chloride;
Described second retardant is ethylene diamine tetra methylene phosphonic acid sodium.
2. auxiliary agent according to claim 1, is characterized in that, described whipping agent is polyoxyethylenated alcohol sodium sulfate and/or α-alkene sulfonate.
3. auxiliary agent according to claim 2, is characterized in that, described solvent is acetone and/or ethanol.
4. auxiliary agent according to claim 3, it is characterized in that, described auxiliary agent comprises the composition of following weight percent: benzene sulfonyl chloride 6-8%, ethylene diamine tetra methylene phosphonic acid sodium 3-4%, polyoxyethylenated alcohol sodium sulfate 2-3%, acetone 58-60%, surplus are water.
5. auxiliary agent according to claim 4, is characterized in that, described auxiliary agent comprises the composition of following weight percent: benzene sulfonyl chloride 6%, ethylene diamine tetra methylene phosphonic acid sodium 4%, polyoxyethylenated alcohol sodium sulfate 3%, acetone 60%, surplus are water.
6. cyanogen coagulates a class plugging agent, comprising: cyanogen coagulates, auxiliary agent described in any one of claim 1-5 and water;
It is 1:3-10 that described cyanogen coagulates with the mass ratio of described water;
The mass ratio that described auxiliary agent and described cyanogen coagulate is 1-2.5:50.
7. cyanogen according to claim 6 coagulates class plugging agent, it is characterized in that, described cyanogen coagulate for chemical experimental factory of University Of Tianjin produce model be TPT cyanogen coagulate.
8. the preparation method of an auxiliary agent according to claim 1, comprise: according to the proportioning of composition each in auxiliary agent, at the temperature of 35-45 DEG C, second retardant, whipping agent and solvent are stirred 25-35min, obtain mixture, then in described mixture, add the first retardant and water, and be cooled to 15-25 DEG C, and continue to stir 35-45min at 15-25 DEG C, obtain described auxiliary agent.
9. method according to claim 8, it is characterized in that, described method comprises: according to the proportioning of composition each in auxiliary agent, at the temperature of 40 DEG C, described second retardant, described whipping agent and described solvent are stirred 30min, obtains described mixture, then in described mixture, described first retardant and described water is added, and be cooled to 20 DEG C, and continue to stir 40min at 20 DEG C, obtain described auxiliary agent.
10. method according to claim 8 or claim 9, it is characterized in that, the pH value of described water is 6.5-7.
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| CN109296839A (en) * | 2018-10-12 | 2019-02-01 | 江苏天润管业有限公司 | A kind of strong closed type buried corrosion-resistant insulating tube and preparation method thereof |
| CN112940696A (en) * | 2021-02-03 | 2021-06-11 | 天津大学 | Modified cyanogen coagulation plugging agent for high-temperature oil reservoir plugging and preparation method and application thereof |
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