CN109913186A - A kind of assistant for drilling petroleum well and preparation method thereof - Google Patents
A kind of assistant for drilling petroleum well and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of assistant for drilling petroleum well, are made of the component of following mass parts: humic acid 80-100 parts modified, 20-30 parts of 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, 10-15 parts of N-maleoyl chitosan, modified crystal whisker of hexa potassium titanate 5-10 parts, 1-2 parts of surfactant, 400-500 parts of water.The present invention also provides a kind of preparation methods of assistant for drilling petroleum well.Modification humic acid and 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids in inventive formulation can be used cooperatively, it is synergistic, resistant to high temperatures, the salt resistance effect of fluid loss additive are improved, the especially excellent high temperature resistant property of modified crystal whisker of hexa potassium titanate can reduce dosage of the fluid loss additive in drilling fluid.Assistant for drilling petroleum well of the invention has the function of anti-260 DEG C of high temperature, anti-saturation salt water, moreover it is possible to effectively subtract reduction drilling fluid filtration, be with a wide range of applications.
Description
Technical field
The invention belongs to oil exploitation auxiliary agent technical fields, and in particular to a kind of assistant for drilling petroleum well and preparation method thereof.
Background technique
Fluid loss additive is one of most important auxiliary agent in oil drilling, it is safe and efficient to maintenance stabilizing mud properties
Drilling well plays an important role.Free water is referred to as leak-off, leak-off to the process that stratum is permeated under the action of pressure difference in drilling fluid
It measures excessive often work to drilling well and brings many adverse consequences, the mud cake that such as high filter loss generates can be attached on the borehole wall, be contracted
The small hydraulic diameter of wellbore and drilling tool annular space is easy to happen lock of tool drilling, and takes out to solve height used in bit freezing
The accidents such as blowout, leakage and well slough can be induced by drawing pressure.In addition, the water for penetrating into stratum after leak-off also results in clay particle expansion
And migration, cause to produce layer blocking, to reduce oil extraction.So needing to add drop in drilling fluid when oil exploitation
Fluid loss agents, to reduce the filter loss of drilling fluid.
Natural polymer fluid loss additive such as humic acid, cellulose, lignin, starch etc. is cheap, from a wealth of sources because of its
And be widely used in oil exploitation, but with the gradually intensification of well depth in oil exploitation and frequently encounter high temperature height
Salt reservoir, these natural polymer fluid loss additives are not because generally have resistant to high temperatures, salt resistance function, to limit its use
Range.In order to improve this situation, other heat and salinity tolerance auxiliary agents are added in natural polymer fluid loss additive in some researchers, to change
Kind drilling fluid mud cake quality, reduces high temperature and high pressure filter loss, but these auxiliary agents are often difficult to combine temperature resistance and salt resistance
Effect, and in order to reach heat and salinity tolerance simultaneously, the auxiliary agent type for needing to be added is more and amount is big, further increases the complexity of underground situation
Property, cause the occurrence probability of peril to become larger, the decline of petroleum yield.Therefore, to solve the above-mentioned problems, having very much must
Develop a kind of new resistant to high temperatures, salt resistant filter loss reduction agent.
Summary of the invention
The present invention provides a kind of assistant for drilling petroleum well, it is anti-to solve natural polymer fluid loss additive presence in the prior art
The problem of high temperature capabilities and saline-alkaline tolerance difference.
The first purpose of the invention is to provide a kind of assistant for drilling petroleum well, are made of: changing the component of following mass fraction
80-100 parts of humic acid of property, 20-30 parts of 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, 10-15 parts of N-maleoyl chitosan,
Modified crystal whisker of hexa potassium titanate 5-10 parts, 1-2 parts of surfactant, 400-500 parts of water；
Wherein, modified humic acid is obtained after being modified by polyacrylic acid and silane coupling agent to humic acid；
Modified crystal whisker of hexa potassium titanate is obtained by silane coupling agent is modified to potassium hexatitanate crystalline substance.
Preferably, the assistant for drilling petroleum well is made of the component of following mass fraction: modified 90 parts of humic acid, 4- hydroxyl
25 parts of base -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, 10 parts of N-maleoyl chitosan, modified 10 parts of crystal whisker of hexa potassium titanate, surface are living
Property 1 part of agent, 450 parts of water.
Preferably, the humic acid is yellow humic acid.Yellow humic acid is the major class in humic acid, and superior performance can
It is dissolved in acid, alkali and water, and containing there are many functional group, such as carboxyl, phenolic hydroxyl group, methoxyl group, sulfonic group, amido, is commonly used as stone
Fluid loss additive in oily drilling well.But natural yellow humic acid include other kinds of humic acid thermal stability it is poor,
Decarboxylation, dehydroxylation, cracking etc. are easy under hot conditions, so that its original activity is lost, therefore, in order to improve yellow humic acid
Heat resistanceheat resistant performance, the present invention are modified yellow humic acid.
Preferably, the diameter of the modified crystal whisker of hexa potassium titanate is 0.2-1.0 microns, and length is 8-12 microns.
Preferably, the surfactant is nonylphenol polyoxyethylene ether or octyl phenol polyoxyethylene ether.
A second object of the present invention is to provide a kind of preparation methods of assistant for drilling petroleum well, comprising the following steps:
Step 1, modified humic acid is prepared
Polyacrylic acid is dissolved in ethyl alcohol, solution A is obtained；Silane coupling A is added into solution A, is uniformly mixed, obtains
Solution B；Humic acid is added into solution B, ultrasonic disperse is uniform, then heats to 60-80 DEG C, reacts 4- under agitation
5h is filtered after completion of the reaction, dry to get the modified humic acid；
Wherein, polyacrylic acid, silane coupling A, humic acid, ethyl alcohol mass ratio be 1-2:2:20:100；
Step 2, modified crystal whisker of hexa potassium titanate is prepared
Silane coupling agent B and ethyl alcohol are obtained into solution C than mixed dissolution according to the quality of 1:20；By crystal whisker of hexa potassium titanate
It is mixed with ethyl alcohol according to the mass ratio of 1:10, ultrasonic disperse obtains suspension；Solution is added dropwise into suspension under agitation
C reacts 1-2h at 60 DEG C after being added dropwise, then by reaction solution filtering, drying to get the modified crystal whisker of hexa potassium titanate；
Wherein, the mass ratio of silane coupling agent B and crystal whisker of hexa potassium titanate is 1:20-30；
Step 3, modified humic acid 80-100 parts, 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids 20- are weighed by mass fraction
30 parts, 10-15 parts of N-maleoyl chitosan, modified crystal whisker of hexa potassium titanate 5-10 parts, 1-2 parts of surfactant, water 400-
500 parts；
Step 4, by modified humic acid weighed in step 3,4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, maleic anhydride acyl
Change high speed dispersion after chitosan, modified crystal whisker of hexa potassium titanate, surfactant, water mix, dispersion, which finishes, obtains the petroleum
Drilling well auxiliary agent.
Preferably, the silane coupling A and the silane coupling agent B are Silane coupling agent KH550.
Preferably, ultrasonic disperse condition is equal in step 1 and step 2 are as follows: disperses under conditions of ultrasonic power 300W
30min；Stirring condition is 500r/min in step 1 and step 2.
Preferably, step 4 high speed dispersion revolving speed is 1000-1500r/min, jitter time 15-30min.
Compared with prior art, the beneficial effects of the present invention are:
1) added with modified yellow humic acid in formula of the invention, yellow humic acid molecule Shangguan can roll into a ball numerous, but heat resistanceheat resistant
Saline-alkaline tolerance is poor, therefore the present invention is modified yellow humic acid using polyacrylic acid and silane coupling agent, to improve its heat resistanceheat resistant
Anti-salt property；It is grafted with Si-OR group on yellow humic acid after silane coupler modified, which is easy to be hydrolyzed into Si-OH, and
Clay particle surface is also enriched in Si-OH in drilling fluid, and therefore, the Si-OH of Si-OH and clay particle surface on yellow humic acid are sent out
Raw condensation forms firm Si-O-Si key, so that yellow humic acid molecule be made firmly to be adsorbed on clay particle；Also, due to
The bond energy of Si-O-Si key is high, not the scission of link vulnerable to high temperature and influence with high salt, therefore has modified yellow humic acid well
Heat resistanceheat resistant, anti-salt property；
After polyacrylic acid is modified yellow humic acid, the carboxyl in polyacrylic acid can be with the functional group in yellow humic acid
In conjunction with the macromolecular for forming space grid structure, when being applied in drilling fluid as fluid loss additive, clay particle can be inhaled
It is attached on the strand of grid structure, hinders the linear motion of clay particle, it is made to be difficult to contact with each other and bond；In addition, viscous
It can also be further formed by the bridge joint between clay particle between with clay particle grid structure and be covered with whole system
Reticular structure plays the stable effect in spatial position.
2) 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- are added in formula of the invention
Strong absorption can occur with clay for hydroxyl, acetylamino in naphthalene sulfonic acids, and naphthalene sulfo group can generate strong hydration, in clay
Grain surface forms hydrated sheath, the f current potential of clay particle is also improved, to increase the stability of clay particle；Meanwhile 4- hydroxyl
Contain the sulfonic group insensitive to salt in base -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, and is able to suppress yellow humic acid in hot conditions
Lower decarboxylation, dehydroxylation, cracking acetylamino, thus enable yellow humic acid further kept under the conditions of high temperature and high salt its original
Some activity.
3) added with modified crystal whisker of hexa potassium titanate in formula of the invention, crystal whisker of hexa potassium titanate is a kind of object of high heat resistanceheat resistant
Matter, can be resistant to high temperatures in the case where dosage is few, can be further improved the heat resistanceheat resistant of fluid loss additive in system of the invention
Performance, while also can be reduced the additive amount of such as yellow humic acid of other fluid loss additive raw materials；Crystal whisker of hexa potassium titanate is by silane coupled
Agent it is modified can be stable be dispersed in system, avoid the generation of itself agglomeration, and after silane coupler modified
Organic group is introduced, to make its adhesion strength between clay particle greatly improve, therefore it can be adsorbed on clay
Grain forms adsorption layer on surface, to prevent clay particle flocculation from becoming larger；On the other hand, crystal whisker of hexa potassium titanate can also follow drilling fluid
The fine grained broken under ring stirring action is settled out by absorption, is no longer bonded to bulky grain.
4) N-maleoyl chitosan is added in formula of the invention, the effect of N-maleoyl chitosan is energy
The macromolecular obtained after being modified polyacrylic acid to yellow humic acid is easily extensible, so as to form space in system
Grid structure.
5) assistant for drilling petroleum well that the present invention prepares has the function of anti-260 DEG C of high temperature, anti-saturation salt water, moreover it is possible to effectively
Additive amount and reduction drilling mud infiltrations amount of the fluid loss additive in drilling fluid are reduced, is with a wide range of applications.
Specific embodiment
In order to enable those skilled in the art to more fully understand, technical solution of the present invention is practiced, below with reference to specific
The invention will be further described for embodiment, but illustrated embodiment is not as a limitation of the invention.
The test method of actual conditions is not specified in following embodiments, according to conventional methods in the art with condition into
The row raw material is commercially available unless otherwise specified.
It should be noted that the preparation method of 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids is referring to white clean in the present invention
Being published within 2012 fuel, " synthesis of 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids is ground with the paper on dyeing the 6th phase of volume 49
Study carefully " work it out.
The preparation method of N-maleoyl chitosan be referring to be published within Sun Xinzhi 2005 chemical research with using the
What the paper " synthesis of N-maleoyl chitosan " on the phase of volume 17 the 2nd was worked it out.
Embodiment 1
A kind of assistant for drilling petroleum well is made of the component of following mass fraction: modified humic acid 90g, 4- hydroxyl -6- acetyl
Amino -2- naphthalene sulfonic acids 25g, N-maleoyl chitosan 10g, diameter are 0.2 micron, six metatitanic acid of modification that length is 8 microns
Potassium whisker 10g, nonylphenol polyoxyethylene ether 1g, water 450g；
It is specific the preparation method is as follows:
Step 1, modified humic acid is prepared
1g polyacrylic acid is dissolved in 100g ethyl alcohol, solution A is obtained；2g Silane coupling agent KH550 is added into solution A,
It is uniformly mixed, obtains solution B；20g Huang humic acid is added into solution B, ultrasound 30min, is uniformly dispersed under the power of 300W,
60 DEG C are then heated to, 5h is reacted under the mixing speed of 500r/min, is filtered after completion of the reaction, 60 DEG C of filter residue dry 5h, i.e.,
Humic acid must be modified；
Step 2, modified crystal whisker of hexa potassium titanate is prepared
By 1g Silane coupling agent KH550 and 20g ethyl alcohol mixed dissolution, solution C is obtained；By 20g crystal whisker of hexa potassium titanate with
The mixing of 200g ethyl alcohol, ultrasonic disperse 30min, obtains suspension under the ultrasonic power of 300W；In the mixing speed of 500r/min
Lower that solution C is added dropwise into suspension, rate of addition 10ml/min reacts 1h at 60 DEG C after being added dropwise, then will reaction
Liquid filtering, 80 DEG C of filter residue dry 5h are to get modified crystal whisker of hexa potassium titanate；
Step 3, modified humic acid 90g, 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids 25g, Malaysia are weighed by mass fraction
Acid anhydrides acylation chitosan 10g, modified crystal whisker of hexa potassium titanate 10g, nonylphenol polyoxyethylene ether 1g, water 450g；
Step 4, by modified humic acid weighed in step 3,4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, maleic anhydride acyl
Divide at a high speed under the speed of 1000r/min after changing chitosan, modified crystal whisker of hexa potassium titanate, nonylphenol polyoxyethylene ether, water mixing
30min is dissipated, dispersion, which finishes, obtains assistant for drilling petroleum well.
Embodiment 2
A kind of assistant for drilling petroleum well is made of the component of following mass fraction: modified humic acid 80g, 4- hydroxyl -6- acetyl
Amino -2- naphthalene sulfonic acids 20g, N-maleoyl chitosan 12g, diameter are 1.0 microns, six metatitanic acid of modification that length is 10 microns
Potassium whisker 5g, octyl phenol polyoxyethylene ether 1.5g, water 400g；
It is specific the preparation method is as follows:
Step 1, modified humic acid is prepared
1.5g polyacrylic acid is dissolved in 100g ethyl alcohol, solution A is obtained；2g silane coupling agent is added into solution A
KH550 is uniformly mixed, obtains solution B；20g Huang humic acid is added into solution B, it is ultrasonic under the ultrasonic power of 300w
30min is uniformly dispersed, and then heats to 70 DEG C, and 4.5h is reacted under the mixing speed of 500r/min, is filtered after completion of the reaction,
60 DEG C of dry 5h are to get modified humic acid；
Step 2, modified crystal whisker of hexa potassium titanate is prepared
By 1g Silane coupling agent KH550 and 20g ethyl alcohol mixed dissolution, solution C is obtained；By 25g crystal whisker of hexa potassium titanate with
The mixing of 250g ethyl alcohol, ultrasonic disperse 30min, obtains suspension under the ultrasonic power of 300W；In the mixing speed of 500r/min
Lower that solution C is added dropwise into suspension, rate of addition 10ml/min reacts 1.5h at 60 DEG C after being added dropwise, then will be anti-
Liquid is answered to filter, 80 DEG C of filter residue dry 5h are to get modified crystal whisker of hexa potassium titanate；
Step 3, modified humic acid 80g, 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids 20g, Malaysia are weighed by mass fraction
Acid anhydrides acylation chitosan 12g, modified crystal whisker of hexa potassium titanate 5g, octyl phenol polyoxyethylene ether 1.5g, water 400g；
Step 4, by modified humic acid weighed in step 3,4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, maleic anhydride acyl
Divide at a high speed under the speed of 1200r/min after changing chitosan, modified crystal whisker of hexa potassium titanate, octyl phenol polyoxyethylene ether, water mixing
20min is dissipated, dispersion, which finishes, obtains assistant for drilling petroleum well.
Embodiment 3
A kind of assistant for drilling petroleum well is made of the component of following mass fraction: modified humic acid 100g, 4- hydroxyl -6- second
Acylamino- -2- naphthalene sulfonic acids 30g, N-maleoyl chitosan 15g, diameter are 0.6 micron, six titanium of modification that length is 12 microns
Sour potassium whisker 8g, nonylphenol polyoxyethylene ether 2g, water 500g；
It is specific the preparation method is as follows:
Step 1, modified humic acid is prepared
2g polyacrylic acid is dissolved in 100g ethyl alcohol, solution A is obtained；2g Silane coupling agent KH550 is added into solution A,
It is uniformly mixed, obtains solution B；20g Huang humic acid, the ultrasound 30min under the ultrasonic power of 300W, dispersion are added into solution B
Uniformly, 80 DEG C are then heated to, 4h is reacted under agitation, filters after completion of the reaction, 60 DEG C of filter residue dry 5h are to get modification
Humic acid；
Step 2, modified crystal whisker of hexa potassium titanate is prepared
By 1g Silane coupling agent KH550 and 20g ethyl alcohol mixed dissolution, solution C is obtained；By 30g crystal whisker of hexa potassium titanate with
The mixing of 300ml ethyl alcohol, ultrasonic disperse 30min, obtains suspension under the ultrasonic power of 300W；In the mixing speed of 500r/min
Lower that solution C is added dropwise into suspension, rate of addition 10ml/min reacts 2h at 60 DEG C after being added dropwise, then will reaction
Liquid filtering, 80 DEG C of filter residue dry 5h are to get modified crystal whisker of hexa potassium titanate；
Step 3, modified humic acid 100g, 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids 30g, Malaysia are weighed by mass fraction
Acid anhydrides acylation chitosan 15g, modified crystal whisker of hexa potassium titanate 8g, nonylphenol polyoxyethylene ether 2g, water 500g；
Step 4, by modified humic acid weighed in step 3,4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, maleic anhydride acyl
Divide at a high speed under the speed of 1500r/min after changing chitosan, modified crystal whisker of hexa potassium titanate, nonylphenol polyoxyethylene ether, water mixing
15min is dissipated, dispersion, which finishes, obtains assistant for drilling petroleum well.
In order to illustrate effect, the present invention is also provided with comparative example, specific as follows:
Comparative example 1
A kind of assistant for drilling petroleum well is formulated and the preparation method is the same as that of Example 1, the difference is that adding in comparative example 1
Humic acid not through modification.
Comparative example 2
A kind of assistant for drilling petroleum well is formulated and the preparation method is the same as that of Example 1, the difference is that not having in comparative example 2
Add 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids.
Comparative example 3
A kind of assistant for drilling petroleum well is formulated and the preparation method is the same as that of Example 1, the difference is that not having in comparative example 3
Add N-maleoyl chitosan.
Comparative example 4
A kind of assistant for drilling petroleum well is formulated and the preparation method is the same as that of Example 1, the difference is that not having in comparative example 4
Add modified crystal whisker of hexa potassium titanate.
Comparative example 5
A kind of assistant for drilling petroleum well, formula are only made of yellow humic acid.
In order to verify effect of the invention, embodiment 1-3 and comparative example 1-5 are prepared below assistant for drilling petroleum well into
Row performance evaluation, the auxiliary agent that specifically the addition present invention prepares in different bases slurry, then carries out burn-in test (i.e. mould to it
The case where various factors that quasi- product is related in real use condition generates aging to product carries out corresponding conditions and reinforces in fact
The process tested), its variation with the filter loss after aging before ageing, which is measured, by the analysis to data measured evaluates its drop
The superiority and inferiority of fluid loss agents performance.
One, to the influence of fresh water-based slurry dehydration wave making machine
16g bentonite is added in 400mL distilled water, stirs 30min under the mixing speed of 2000r/min, has stirred
Finish after at room temperature curing in airtight condition for 24 hours to get fresh water-based slurry.
10 parts of fresh water-based slurrys are taken, portion is used as blank sample, does not add any auxiliary agent, remaining 9 parts are only added a kind of reality
Apply the auxiliary agent that a 1-3 and comparative example 1-5 are prepared, and additive amount is the 1% of fresh water-based slurry weight, after addition with
30min is stirred under the mixing speed of 2000r/min, the filter loss after then surveying its 260 DEG C of aging 16h is lost with filters pressing in room temperature
The filter loss of instrument and high pressure high temperature filter tester measurement sample, concrete outcome are shown in Table 1.
Filtrate reducing effect of the table 1 to fresh water-based slurry
As can be seen from Table 1, for fresh water-based slurry, when additive dosage is 1% in embodiment 1,260 DEG C/16h is old
After change, press fluid loss in 6ml or so in system, high pressure fluid loss has preferable filtration reduction in 24ml or so；Comparative example 1
Formula in yellow humic acid not by being modified, therefore for embodiment 1-3, fluid loss and high pressure dehydration are pressed in system
Amount is larger, illustrates that the anti-high-heat performance of yellow humic acid being modified is more preferable；Without addition 4- hydroxyl -6- in the formula of comparative example 2
Acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids is pressed fluid loss and high pressure fluid loss larger but smaller than comparative example 1 in system, is illustrated for height
For heat condition, 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids plays the role of important filtrate reducing in whole system, but important
Property not as good as modified yellow humic acid；Without addition N-maleoyl chitosan in the formula of comparative example 3, in system pressure fluid loss and
High pressure fluid loss is and embodiment 1-3 is suitable, illustrates that N-maleoyl chitosan is made in filtrate reducing of the high heat condition to system
It is little with influencing；Without adding modified crystal whisker of hexa potassium titanate in the formula of comparative example 4, fluid loss and high pressure fluid loss are pressed in system
It is larger, and be not much different with comparative example 1, illustrate for high heat condition, is risen in modified crystal whisker of hexa potassium titanate whole system
It is acted on to important filtrate reducing；Comparative example 5 is only with yellow humus acid as fluid loss additive use, therefore effect is undesirable.It is comprehensive
Above it is found that under the conditions of high fever, playing the role of important filtrate reducing is to be modified humus acid and be modified potassium hexatitanate crystalline substance, and each object
There is mutually synergistic effect between material, plays the role of good filtrate reducing jointly.
Two, the influence of slurry dehydration wave making machine water base to saturated salt
The fresh water-based slurry of same concentration is prepared according to the method described above, is then continuously added chlorination in the fresh water-based slurry of 400ml
Sodium is made into the water base slurry of saturated salt, test condition, test method and test item are the same as to fresh water-based slurry dehydration wave making machine to being saturated
Influence part it is identical, concrete outcome is shown in Table 2.
Filtrate reducing effect of the table 2 to the water base slurry of saturated salt
| Project | FLAPI(ml) | FLHIHP(ml) |
| Embodiment 1 | 8.7 | 26.3 |
| Embodiment 2 | 9.1 | 27.2 |
| Embodiment 3 | 9.3 | 27.8 |
| Comparative example 1 | 13.8 | 30.1 |
| Comparative example 2 | 21.6 | 36.4 |
| Comparative example 3 | 10.2 | 28.7 |
| Comparative example 4 | 12.6 | 31.2 |
| Comparative example 5 | 41.3 | 63.8 |
| Blank control | Full leakage | Full leakage |
As can be seen from Table 2, for slurry water base for saturated salt, when additive dosage is 1% in embodiment 1,260 DEG C/
After 16h aging, press fluid loss in 9ml or so in system, high pressure fluid loss has preferable filtration reduction in 27ml or so；It is right
It presses fluid loss and high pressure fluid loss little in 1 system of ratio, illustrates drop filter of the yellow humic acid being modified under high salt conditions
Fruit of failing is not significant；It presses fluid loss and high pressure fluid loss larger in 2 system of comparative example, illustrates for high salt conditions, 4-
Hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids plays the role of important filtrate reducing in whole system；4 system of comparative example 3 and comparative example
Middle pressure fluid loss and high pressure fluid loss are and embodiment 1-3 is suitable, illustrate N-maleoyl chitosan and modification potassium hexatitanate
Whisker is little in filtrate reducing function influence of the high salt conditions to system；Comparative example 5 is only with yellow humus acid as fluid loss additive
It uses, therefore effect is undesirable.In summary, under high salt conditions, playing the role of important filtrate reducing is 4- hydroxyl -6- acetyl
Amino -2- naphthalene sulfonic acids, and there is mutually synergistic effect between each material, play the role of good filtrate reducing jointly.
Three, to the influence of compound salt-water basic slurry dehydration wave making machine
The fresh water-based slurry of same concentration is prepared according to the method described above, and 18g chlorination is then added in the fresh water-based slurry of 400ml
Sodium, 5.2g magnesium chloride and 2g calcium chloride are made into compound salt-water basic slurry, and test condition, test method and test item are the same as to light
The influence part of water base slurry dehydration wave making machine is identical, and concrete outcome is shown in Table 3.
Filtrate reducing effect of the table 3 to compound salt-water basic slurry
| Project | FLAPI(ml) | FLHIHP(ml) |
| Embodiment 1 | 8.3 | 25.8 |
| Embodiment 2 | 8.6 | 26.1 |
| Embodiment 3 | 8.1 | 25.6 |
| Comparative example 1 | 12.6 | 28.7 |
| Comparative example 2 | 18.7 | 35.2 |
| Comparative example 3 | 9.2 | 26.9 |
| Comparative example 4 | 9.8 | 27.6 |
| Comparative example 5 | 37.4 | 59.8 |
| Blank control | Full leakage | Full leakage |
As can be seen from Table 3, for compound salt-water basic slurry, when additive dosage is 1% in embodiment 1,260 DEG C/
Press fluid loss in 8ml or so after 16h aging, in system, high pressure fluid loss is suitable in the water base slurry of 26ml or so and saturated salt, tool
Standby preferable filtration reduction；The trend of comparative example 1-5 and suitable in the water base slurry of saturated salt, i.e., for anticalcium, anti-magnesium ability
For, the effect of 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids is more important, and there is mutually synergistic effect between each material, jointly
Play the role of good filtrate reducing.
The present invention describes preferred embodiment, and once a person skilled in the art knows basic creative general
It reads, then additional changes and modifications may be made to these embodiments.So it includes preferred real that the following claims are intended to be interpreted as
It applies example and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of assistant for drilling petroleum well, which is characterized in that be made of the component of following mass fraction: modified humic acid 80-100
Part, 20-30 parts of 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, 10-15 parts of N-maleoyl chitosan, modified potassium hexatitanate are brilliant
It must 5-10 parts, 1-2 parts of surfactant, 400-500 parts of water；
Wherein, modified humic acid is obtained after being modified by polyacrylic acid and silane coupling agent to humic acid；
Modified crystal whisker of hexa potassium titanate is obtained by silane coupling agent is modified to potassium hexatitanate crystalline substance.
2. assistant for drilling petroleum well according to claim 1, which is characterized in that be made of: changing the component of following mass fraction
Property 90 parts of humic acid, 25 parts of 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, 10 parts of N-maleoyl chitosan, modified six metatitanic acids
10 parts of potassium whisker, 1 part of surfactant, 450 parts of water.
3. assistant for drilling petroleum well according to claim 1 or 2, which is characterized in that the humic acid is yellow humic acid.
4. assistant for drilling petroleum well according to claim 1 or 2, which is characterized in that the modified crystal whisker of hexa potassium titanate it is straight
Diameter is 0.2-1.0 microns, and length is 8-12 microns.
5. assistant for drilling petroleum well according to claim 1 or 2, which is characterized in that the surfactant is poly- for nonyl phenol
Ethylene oxide ether or octyl phenol polyoxyethylene ether.
6. the preparation method of assistant for drilling petroleum well according to claim 1, which comprises the following steps:
Step 1, modified humic acid is prepared
Polyacrylic acid is dissolved in ethyl alcohol, solution A is obtained；Silane coupling A is added into solution A, is uniformly mixed, obtains solution
B；Humic acid is added into solution B, ultrasonic disperse is uniform, then heats to 60-80 DEG C, reacts 4-5h under agitation, instead
It is filtered after answering, it is dry to get the modified humic acid；
Wherein, polyacrylic acid, silane coupling A, humic acid, ethyl alcohol mass ratio be 1-2:2:20:100；
Step 2, modified crystal whisker of hexa potassium titanate is prepared
Silane coupling agent B and ethyl alcohol are obtained into solution C than mixed dissolution according to the quality of 1:20；By crystal whisker of hexa potassium titanate and second
Alcohol is mixed according to the mass ratio of 1:10, and ultrasonic disperse obtains suspension；Solution C is added dropwise into suspension under agitation, drips
1-2h is reacted after adding at 60 DEG C, then by reaction solution filtering, drying to get the modified crystal whisker of hexa potassium titanate；
Wherein, the mass ratio of silane coupling agent B and crystal whisker of hexa potassium titanate is 1:20-30；
Step 3, by mass fraction weigh modified humic acid 80-100 parts, 20-30 parts of 4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids,
10-15 parts of N-maleoyl chitosan, modified crystal whisker of hexa potassium titanate 5-10 parts, 1-2 parts of surfactant, 400-500 parts of water；
Step 4, by modified humic acid weighed in step 3,4- hydroxyl -6- acetylaminohydroxyphenylarsonic acid 2- naphthalene sulfonic acids, the acylated shell of maleic anhydride
High speed dispersion after glycan, modified crystal whisker of hexa potassium titanate, surfactant, water mixing, dispersion, which finishes, obtains the oil drilling
Auxiliary agent.
7. the preparation method of assistant for drilling petroleum well according to claim 6, which is characterized in that the silane coupling A and
The silane coupling agent B is Silane coupling agent KH550.
8. the preparation method of assistant for drilling petroleum well according to claim 6, which is characterized in that ultrasonic in step 1 and step 2
Dispersion condition is equal are as follows: disperses 30min under conditions of ultrasonic power 300W；Stirring condition is 500r/ in step 1 and step 2
min。
9. the preparation method of assistant for drilling petroleum well according to claim 6, which is characterized in that the dispersion of step 4 high speed turns
Speed is 1000-1500r/min, jitter time 15-30min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500267A (en) * | 2020-06-09 | 2020-08-07 | 粤久久食品科技(江门)有限公司 | Petroleum drilling auxiliary and preparation method thereof |
| CN112521920A (en) * | 2020-12-09 | 2021-03-19 | 江西省三汇科技有限公司 | Humic acid-containing drilling mud treating agent |
| CN112760086A (en) * | 2020-12-29 | 2021-05-07 | 扬州工业职业技术学院 | Modified filtrate reducer for petroleum drilling fluid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052349A (en) * | 1989-12-09 | 1991-06-19 | 中南工业大学 | Multifunctional well-drilling liquid treating agent and preparation method thereof |
| CN101220260A (en) * | 2007-01-08 | 2008-07-16 | 北京化工大学 | Method of producing novel sulfonation humic acid drilling mud modifying agent |
| CN102311726A (en) * | 2011-06-08 | 2012-01-11 | 河南金马石油科技有限责任公司 | Method for preparing fluid loss agent |
| CN106675537A (en) * | 2016-12-01 | 2017-05-17 | 中国石油天然气集团公司 | Fiber flexibilizer for well cementing slurry and preparation method of fiber flexibilizer |
| CN106746967A (en) * | 2016-12-01 | 2017-05-31 | 中国石油天然气集团公司 | A kind of high compressive strength, low Young's modulus well cementation toughness cement composition |
-
2019
- 2019-04-10 CN CN201910282820.7A patent/CN109913186B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052349A (en) * | 1989-12-09 | 1991-06-19 | 中南工业大学 | Multifunctional well-drilling liquid treating agent and preparation method thereof |
| CN101220260A (en) * | 2007-01-08 | 2008-07-16 | 北京化工大学 | Method of producing novel sulfonation humic acid drilling mud modifying agent |
| CN102311726A (en) * | 2011-06-08 | 2012-01-11 | 河南金马石油科技有限责任公司 | Method for preparing fluid loss agent |
| CN106675537A (en) * | 2016-12-01 | 2017-05-17 | 中国石油天然气集团公司 | Fiber flexibilizer for well cementing slurry and preparation method of fiber flexibilizer |
| CN106746967A (en) * | 2016-12-01 | 2017-05-31 | 中国石油天然气集团公司 | A kind of high compressive strength, low Young's modulus well cementation toughness cement composition |
Non-Patent Citations (1)
| Title |
|---|
| 白洁等: "4-羟基-6-乙酰氨基-2-萘磺酸的合成研究", 《染料与染色》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500267A (en) * | 2020-06-09 | 2020-08-07 | 粤久久食品科技(江门)有限公司 | Petroleum drilling auxiliary and preparation method thereof |
| CN112521920A (en) * | 2020-12-09 | 2021-03-19 | 江西省三汇科技有限公司 | Humic acid-containing drilling mud treating agent |
| CN112760086A (en) * | 2020-12-29 | 2021-05-07 | 扬州工业职业技术学院 | Modified filtrate reducer for petroleum drilling fluid |
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