CN106753279A - Sealing agent and its preparation method and application - Google Patents
Sealing agent and its preparation method and application Download PDFInfo
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- CN106753279A CN106753279A CN201510801934.XA CN201510801934A CN106753279A CN 106753279 A CN106753279 A CN 106753279A CN 201510801934 A CN201510801934 A CN 201510801934A CN 106753279 A CN106753279 A CN 106753279A
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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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/5045—Compositions based on water or polar solvents containing inorganic compounds
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/08—Fiber-containing well treatment fluids
Abstract
The present invention provides a kind of sealing agent and its preparation method and application, and the sealing agent includes the string of silica, the basic copper carbonate of 25~30 weight portions, the ferrous disulfide of 26~29 weight portions and 10~15 weight portions of 25~30 weight portions.Sealing agent temperature tolerance of the invention is good, meets high-temperature stable and does not decompose, and the crack that can be up to temperature in 232 DEG C of Oil/gas Well is effectively blocked.
Description
Technical field
The present invention relates to oil exploitation technology, more particularly to a kind of sealing agent and its preparation method and application.
Background technology
During petroleum drilling operation, because there is microcrack or hole, reservoir pressure coefficient are low in stratum
Etc. reason, seepage or small leakage (leak speed≤15m3/ h) happen occasionally, if fracture do not carry out and
When block, it may occur that blowout caused by causing Ascending Velocity For Oil ＆ Gas too fast because target zone oil gas is active
Leakage phenomenon.
Currently for sealing agent in seepage or the well of small leakage, although the crack of 0.5~1mm can be entered
Row closure, but when drilling well terminates to extract OIH gas, sealing agent is difficult to clean off, therefore
Extraction conveying to oil gas causes certain operation difficulty, and existing sealing agent just in some
Low temperature gasline well (≤190 DEG C), once gasoline well temperature to be blocked is too high, sealing agent stabilization
Property can drastically decompose, corrode, cause closure fail.
The content of the invention
The present invention provides a kind of sealing agent and its preparation method and application, for overcoming leak stopping in the prior art
Agent is met high temperature during oil gas well mining and easily decomposes, corrodes so as to cause the phenomenon of closure failure.
The present invention provides a kind of sealing agent, including 25~30 weight portions silica, 25~30 weight
The string of the basic copper carbonate, the ferrous disulfide of 26~29 weight portions and 10~15 weight portions of part.
In the sealing agent that the present invention is provided, composition is simple, in stable condition.The fracture in oil gas well mining
When being blocked, silica, basic copper carbonate and ferrous disulfide have stronger stabilization to high temperature
Property, therefore the sealing agent temperature can use in being up to 232 DEG C of deep-well again.And the sealing agent is to alkali
Property inert more by force because drilling fluid is all in alkalescence, therefore sealing agent of the invention can be in alkaline drilling well
Stable existence in liquid, will not be reacted with drilling fluid never influences plugging effect.Simultaneously as this hair
Bright sealing agent has certain dissolubility to acidity, after drillng operation terminates, can be noted by well
Enter the contact closure of some acidic materials, so as to the oil gas in well is carried out into extraction conveying, therefore use this hair
Bright sealing agent can simplify the follow-up Job Operations of Oil/gas Well, be easy to the extraction of oil gas to convey.The present invention
The above-mentioned each component of sealing agent is common commercially available.
Further, the molecular formula of the string is (C6H10O5)n, n=1~14.Should when selecting
During the string of molecular formula, silica, basic copper carbonate and ferrous disulfide can be with such plants
Fibres are efficiently merged, and are interspersed in the space of fiber, so that effective fracture is blocked.
Further, the string is selected from corncob, peanut shell, sawdust, maize straw, sorghum
One or more in stalk, straw, wheat straw and cotton stalk.When string is the mixed of above-mentioned many kinds of substance
During compound, the present invention is not limited to the ratio between various materials.
Further, the granularity for stating sealing agent is 44~420 μm.Have 40~20 in situ of drilling well majority
Purpose wire screen, after sealing agent of the invention is returned with drilling fluid drains into ground, can use 40~20 purposes
Wire screen is screened to the drilling fluid of the row of returning, and due to the less particle diameter of sealing agent of the present invention, therefore it sieves
Rate can reach more than 50%, thus sealing agent of the present invention can circulating repetition utilize, greatly save into
This.The less sealing agent of particle diameter can be by most of downhole instrument simultaneously.Therefore it is applied to various orientations
Well and horizontal well.
The present invention also provides a kind of preparation method of any of the above-described described sealing agent, comprises the following steps：
1) by the silica of 25~30 weight portions, the basic copper carbonate of 25~30 weight portions, 26~29
The string of the ferrous disulfide of weight portion and 10~15 weight portions is well mixed, and obtains the first mixing
Thing；
2) first mixture is put into temperature to be taken out after being soaked in 20~30 DEG C of water, drying is cold
But to after room temperature, the second mixture is obtained；
3) hot-pressing processing is carried out to second mixture, prepares the plate that thickness is 0.3~0.5mm
Material；
4) sheet material is crushed to the particle that granularity is 44~420 μm, the sealing agent is obtained.
After solid, therefore the mixing of above-mentioned each component being due to each component in sealing agent of the present invention, institute's shape
Into the first mixture it is more loose.After by first mixture soak time in water, each component can be because
The intensity of enhancing mixture is mutually adsorbed for water sorption, and after meeting water immersion, is assisted in removing each
The water-solubility impurity of component, so as to improve the content of active ingredient in sealing agent, further improves closure effect
Really.Meanwhile, by second mixture of the drying with uniform temperature before hot-pressing processing is carried out, it is also subject to
Cooling procedure, hot press operation is directly carried out after not drying under conditions of high temperature, and reason is,
The cooling step is favorably improved the physical strength of mixture.
Further, it is 20~30h to control the soak time.By soak time control in the time model
In enclosing, on the premise of ensure that the constant soft rot of string, the fusion of each component was both contributed to, had made
Each component mutually adsorbs improvement intensity, again being capable of substantial amounts of removal water-solubility impurity.
Further, it is 270~330 DEG C to control the drying temperature.In order to ensure the follow-up heat to material
The ease for operation for the treatment of is pressed, can be with proper extension drying time, it is 2h for example to control drying time.
Further, control the hot-pressing processing is carried out under conditions of pressure is 13000~18000PSI.
The present invention also provides application of any of the above-described described sealing agent in oil gas well development.Specifically,
When Oil/gas Well is developed, can be by sealing agent addition in drilling fluid, sealing agent injects with drilling fluid
To well, the crack in well is blocked.Simultaneously in drillng operation, one in injection drilling fluid
Divide sealing agent can also drain into ground as drilling fluid is returned, due to the above-mentioned suitable particle diameter of sealing agent of the present invention,
The drilling fluid on ground can also be drained into returning carries out the recovery and recycling of sealing agent, has saved and has used into
This.
The present invention also provides a kind of drilling fluid, including any of the above-described described sealing agent, and the sealing agent exists
Mass content in the drilling fluid is 0.1~10%.The drilling fluid not only has functions that drilling fluid, most
It is important that can be blocked to the crack of high temperature well, it is to avoid the leakage caused due to crack in high temperature well
Blowout phenomenon.
Implementation of the invention, at least has the advantage that：
1st, the sealing agent heat-resisting quantity that the present invention is provided is strong, and meeting high temperature will not decompose the phenomenon of softening,
Can be up in 232 DEG C of deep-well in temperature and well internal fissure is effectively blocked.
2nd, the sealing agent that the present invention is provided meets the aobvious inertia of alkali, therefore, it is possible to the stable existence in drilling fluid；Meet
The resolution ratio of acid between 36.37~62.92%, therefore subsequently can be by injecting acidic materials in well
Dissolving sealing agent, so that the extraction conveying of OIH gas is completed, it is easy to operate.
3rd, the sealing agent particle diameter distribution that the present invention is provided is between 44~420 μm, therefore 40~200
Under purpose wire screen, its sieving rate between 48.9~86.8%, therefore, return drain into the sealing agent on ground can
Complete to recycle and reuse by simple sieving operation, it is cost-effective.And the sealing agent energy of the granularity
Enough instruments by underground work, therefore be adapted to due to various directional well instrument and horizontal well.
4th, the sealing agent that the present invention is provided is in cold water, hot water, methyl alcohol, diethyl ether, n- octanols and acetone
In it is stable in properties, it is applied widely therefore suitable for various water-base drilling fluids or in oil base drilling fluid.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with reality of the invention
Example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described
Embodiment be a part of embodiment of the invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The source of the raw material employed in the following embodiments of the present invention is as follows：
Silica：The wide source of students Chemical Industry Science Co., Ltd in Shijiazhuang
Basic copper carbonate：The upper glad Industrial Co., Ltd. of voyage
Ferrous disulfide：Tongling Hull mineral products Co., Ltd
Embodiment 1
The sealing agent of the present embodiment, including following component：
Silica：30 weight portions
Basic copper carbonate：30 weight portions
Ferrous disulfide：29 weight portions
Corncob：11 weight portions.
The sealing agent of the present embodiment is prepared as follows：
1) after according to above-mentioned composition dispensing, each component is mixed, the first mixture is obtained；
2) the first mixture is put into temperature to be taken out after 24h is soaked in 25 DEG C of water, in 300 DEG C of high temperature
2h is dried in stove, after being cooled to room temperature, the second mixture is obtained；
3) adopting hot pressing trigger to the second mixture carries out hot-pressing processing, and it is 15000PSI to set heating platen pressure,
Prepare the sheet material that thickness is 0.5mm；
4) sheet material is crushed to the particle that granularity is 200~350 μm, above-mentioned sealing agent is obtained.
Embodiment 2
The sealing agent of the present embodiment, including following component：
Silica：25 weight portions
Basic copper carbonate：30 weight portions
Ferrous disulfide：29 weight portions
Peanut shell：15 weight portions.
The sealing agent of the present embodiment is prepared as follows：
1) after according to above-mentioned composition dispensing, each component is mixed, the first mixture is obtained；
2) the first mixture is put into temperature to be taken out after 30h is soaked in 20 DEG C of water, in 280 DEG C of high temperature
2h is dried in stove, after being cooled to room temperature, the second mixture is obtained；
3) adopting hot pressing trigger to the second mixture carries out hot-pressing processing, and it is 13000PSI to set heating platen pressure,
Prepare the sheet material that thickness is 0.4mm；
4) sheet material is crushed to the particle that granularity is 44~200 μm, above-mentioned sealing agent is obtained.
Embodiment 3
The sealing agent of the present embodiment, including following component：
Silica：28 weight portions
Basic copper carbonate：25 weight portions
Ferrous disulfide：26 weight portions
Cotton stem：14 weight portions.
The sealing agent of the present embodiment is prepared as follows：
1) after according to above-mentioned composition dispensing, each component is mixed, the first mixture is obtained；
2) the first mixture is put into temperature to be taken out after 22h is soaked in 30 DEG C of water, in 330 DEG C of high temperature
2h is dried in stove, after being cooled to room temperature, the second mixture is obtained；
3) adopting hot pressing trigger to the second mixture carries out hot-pressing processing, and it is 18000PSI to set heating platen pressure,
Prepare the sheet material that thickness is 0.3mm；
4) sheet material is crushed to the particle that granularity is 300~420 μm, above-mentioned sealing agent is obtained.
Embodiment 4
The sealing agent of the present embodiment, including following component：
Silica：26 weight portions
Basic copper carbonate：28 weight portions
Ferrous disulfide：28 weight portions
The mixture of cotton stem, straw and sawdust：15 weight portions.
The sealing agent of the present embodiment is prepared as follows：
1) after according to above-mentioned composition dispensing, each component is mixed, the first mixture is obtained；
2) the first mixture is put into temperature to be taken out after 20h is soaked in 26 DEG C of water, in 270 DEG C of high temperature
2h is dried in stove, after being cooled to room temperature, the second mixture is obtained；
3) adopting hot pressing trigger to the second mixture carries out hot-pressing processing, and it is 14000PSI to set heating platen pressure,
Prepare the sheet material that thickness is 0.5mm；
4) sheet material is crushed to the particle that granularity is 280~400 μm, above-mentioned sealing agent is obtained.
Test example 1
Sealing agent prepared by embodiment 1 is equally divided into 6 parts, every part of 1g is separately added at room temperature
100mL cold water (5 DEG C), 100mL hot water (100 DEG C), 100mL methyl alcohol, 100mL diethyls
In the NaOH solution of ether, 100mL acetone and 100mLpH=11,0.5~1h is stirred.Using
Above-mentioned reaction system is filtered respectively in 105 ± 2 DEG C of glass filter crucibles of constant weight, with 40 DEG C of hot water
After washing filter residue 5 times, filter residue is dried to constant weight in 105 ± 2 DEG C of electric dry oven, and utilize formula 1
Calculate the quality of dissolved matter.
According to sealing agent prepared by same operation, Processing Example 2~4,1 is the results are shown in Table.
The quality formula 1 of the quality-glass filter crucible of dissolving amount of substance=filter residue and glass filter crucible
The dissolubility of each sealing agent of table 1
As shown in Table 1：The present invention provide sealing agent cold water (5 DEG C), hot water (100 DEG C),
Not readily dissolved in methyl alcohol, diethyl ether, acetone and NaOH solution (pH=11), it is stable in properties.
Therefore sealing agent of the invention can be used in water-base drilling fluid and oil base drilling fluid, and to strong basicity thing
Matter has stronger inertia.
Test example 2
Prepare drilling fluid：
The drilling fluid of this test example includes following component according to weight percentage：Bentonite 7%, burning
Alkali (NaOH) 0.2%, soda ash (Na2CO3) 0.1%, sulfonated phenol formaldehyde resin (SMP-3) 3%, sulphur
Change walchowite (SPNH) 3%, anti-sloughing agent (SYA01) 2%, lubricant (LED-2) 2%,
Water 82.7%.
Take 4 parts of above-mentioned drilling fluid, every part of 1.5L.Sealing agent 1 prepared by embodiments of the invention 1
Added into drilling fluid according to 0.5%, 1%, 2% and 3% ratio respectively, stirred.
Above-mentioned 4 parts of drilling fluids and 4 1mm are stitched grooving wide and be correspondingly placed into CDL HTHPs
In sound state leakage blockage simulation laboratory apparatus, and instrument temperature as 232 DEG C is set, pressure is 1MPa,
After 4 parts of drilling fluid temperatures rise to design temperature, 4 parts of drilling fluids are under Stress control respectively to 4
Grooving is irrigated, until instrument stops perfusion after grooving is blocked, after the 10min that persistently presses, note
At 232 DEG C, during 1MPa, 4 parts of drilling fluids stitch closure wastage wide to 1mm and (that is, irrigate for record
After the wastage, grooving is complete by closure).Then, pressure parameter is adjusted, with identical operation stream
Journey, is separately recorded in 232 DEG C, when pressure be 2MPa, 3MPa, 4MPa, 5MPa, 6MPa,
During 7MPa, 4 parts of drilling fluids stitch closure wastage wide to 1mm.
According to sealing agent prepared by same operation, Processing Example 2~4, and measure sealing agent 2~4
Temperature be 232 DEG C, when pressure be 1MPa, 2MPa, 3MPa, 4MPa, 5MPa, 6MPa,
During 7MPa, each group drilling fluid stitches closure wastage wide to 1mm.Experimental measurements see the table below 2.
Evaluation criterion：
√：Wastage≤1.5L, leak stopping success；
×：Wastage ＞ 1.5L, leak stopping failure.
Each drilling fluid of table 2 is under 232 DEG C and different pressures to the closure wastage of 1mm groovings
As shown in Table 2：Sealing agent high temperature resistance effect of the invention is good, stable in properties at 232 DEG C, still
Can fracture effectively blocked, plugging effect is obvious.
Test example 3
Prepare drilling fluid
The drilling fluid of this test example includes following component according to weight percentage：Bentonite 6%, burning
Alkali (NaOH) 0.2%, soda ash (Na2CO3) 0.1%, sulfonated phenol formaldehyde resin (SMP-3) 3%, sulphur
Change walchowite (SPNH) 3%, anti-sloughing agent (SYA01) 2%, lubricant (LED-2) 2%,
Water 83.7%.
Take 4 parts of above-mentioned drilling fluid, every part of 200ml.Sealing agent prepared by embodiments of the invention 1
1 is added thereto in 3 parts of drilling fluids according to 1%, 2% and 3% ratio, and another is used as blank pair
According to, after 10min is stirred at room temperature, the rheological property of measure drilling fluid.
Specifically, according to the regulation of GB/T16783.1-2006, using six fast rotation viscometers at 50 DEG C
The Φ of the drilling fluid for adding sealing agent 1 is determined respectively600、Φ300、Φ200、Φ100、Φ6、Φ3Viscosity
And 3r/min maximum readings R during static 10s or 10min3, then calculated according to following formula 2- formulas 5
The gel strength of apparent viscosity (AV), plastic viscosity (PV), yield value (YP) and 10s/10min
(G10s/G10min).The density of the drilling fluid of sealing agent 1 was added using densimeter measurement simultaneously.
AV=0.5 × Φ600Formula 2
PV=Φ600-Φ300Formula 3
YP=0.51 × (Φ300- PV) formula 4
G10s/G10min=R3/ 2 formulas 5
According to sealing agent prepared by same operation, Processing Example 2~4, and measure sealing agent 2~4
Change to drilling fluid rheology performance.Experimental measurements see the table below 3.
Parameter evaluation of each sealing agent of table 3 to drilling fluid rheology performance
As seen from the results in Table 3, the addition of sealing agent of the invention will not be impacted to drilling fluid, no
The rheological parameter of drilling fluid can be changed, therefore can be directly added into drilling fluid when in use, user
Just.
Test example 4
4 parts of sealing agent prepared by Example 1, every part of 20g, be respectively adopted 40,100,200,
The wire screen sieving of 325 mesh, is surveyed after sieving and weighs screen over-size, and sieving rate is calculated according to formula 6.
According to sealing agent prepared by same operation Processing Example 2~4, experimental result is shown in Table 4.
Sieving rate=the formulas 6 of (sample quality-screen over-size)/sample quality * 100%
The sieving rate of each sealing agent of table 4
As shown in Table 4, the sealing agent that prepared by the present invention to the sieving rate 86.8% of 40 mesh, to 200
It is 48.9% that mesh obtains sieving rate, and in situ of drilling well, most of is 40-200 mesh sieve cloth, therefore, this hair
The drill-feeding plugging agent of bright preparation can be reclaimed by the way of sieving, be reused.
Test example 5
Be separately added into for 6 portions of sealing agents by 6 parts of sealing agent prepared by Example 1, every part of 5g
5%HCl, 10%HCl, 20%HCl, 12%HCl+1%HF, 12%HCl+2%HF,
In the acid solution of 12%HCl+3%HF, every part of acid solution 50ml.The uniform stirring under 90 DEG C of constant temperatures
After 4h, filtering, drying determines filter residue weight, and it is dense in difference to calculate sealing agent of the present invention according to formula 7
Acid solution in degree obtains corrosion rate.
According to sealing agent prepared by same operation, Processing Example 2~4, experimental result is shown in Table 5.
Corrosion rate=(example weight-filter residue weight) formulas 7 of/sample quality * 100%
Corrosion rate of each sealing agent of table 5 in the acid solution of various concentrations
As shown in Table 5, sealing agent of the invention has certain dissolution rate, therefore drillng operation to acidity
After end, can be blocked to certain density acidic materials solution is injected in well, so as to complete taking out for oil gas
Take conveying operations.Using sealing agent of the invention can the extraction that must realize follow-up oil gas simple and easy to apply it is defeated
Send link, it is to avoid the waste of labour.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than right
Its limitation；Although being described in detail to the present invention with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It can still modify to the technical scheme described in foregoing embodiments,
Or equivalent is carried out to which part or all technical characteristic；And these modifications or replacement, and
The scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution is not made.
Claims (10)
1. a kind of sealing agent, it is characterised in that the silica including 25~30 weight portions, 25~30
The plant of the basic copper carbonate of weight portion, the ferrous disulfide of 26~29 weight portions and 10~15 weight portions
Fiber.
2. sealing agent according to claim 1, it is characterised in that the molecular formula of the string
It is (C6H10O5)n。
3. sealing agent according to claim 1, it is characterised in that the string is selected from corn
One kind or many in core, peanut shell, sawdust, maize straw, broomcorn straw, straw, wheat straw and cotton stalk
Kind.
4. sealing agent according to claim 1, it is characterised in that the granularity of the sealing agent is
44~420 μm.
5. the preparation method of any described sealing agent of Claims 1-4, it is characterised in that including such as
Lower step：
1) by the silica of 25~30 weight portions, the basic copper carbonate of 25~30 weight portions, 26~29
The string of the ferrous disulfide of weight portion and 10~15 weight portions is well mixed, and obtains the first mixing
Thing；
2) first mixture is put into temperature to be taken out after being soaked in 20~30 DEG C of water, drying is cold
But to after room temperature, the second mixture is obtained；
3) hot-pressing processing is carried out to second mixture, prepares the plate that thickness is 0.3~0.5mm
Material；
4) sheet material is crushed to the particle that granularity is 44~420 μm, the sealing agent is obtained.
6. preparation method according to claim 5, it is characterised in that control the soak time to be
20~30h.
7. preparation method according to claim 5, it is characterised in that control the drying temperature to be
270~330 DEG C.
8. preparation method according to claim 5, it is characterised in that the control hot-pressing processing exists
Pressure be 13000~18000PSI under conditions of carry out.
9. application of any described sealing agent of Claims 1-4 in gasoline well development.
10. a kind of drilling fluid, it is characterised in that including any described sealing agent of Claims 1-4,
Mass content of the sealing agent in the drilling fluid is 0.1%~10%.
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|---|---|---|---|
| CN201510801934.XA CN106753279A (en) | 2015-11-19 | 2015-11-19 | Sealing agent and its preparation method and application |
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|---|---|---|---|
| CN201510801934.XA CN106753279A (en) | 2015-11-19 | 2015-11-19 | Sealing agent and its preparation method and application |
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| CN106753279A true CN106753279A (en) | 2017-05-31 |
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| CN201510801934.XA Pending CN106753279A (en) | 2015-11-19 | 2015-11-19 | Sealing agent and its preparation method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248183A (en) * | 2021-06-22 | 2021-08-13 | 山东孟友新材料科技有限责任公司 | Plugging agent prepared from glass slag and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102977866A (en) * | 2012-12-21 | 2013-03-20 | 中国海洋石油总公司 | High-water-loss curing plugging agent for plugging fissures |
| CN103013052A (en) * | 2012-12-17 | 2013-04-03 | 吉林大学 | Degradable underground blocking material |
| CN103265936A (en) * | 2013-04-18 | 2013-08-28 | 张家港市一达水泥混凝土外加剂有限公司 | Rapid plugging agent |
| CN103602323A (en) * | 2013-10-22 | 2014-02-26 | 西南石油大学 | Nanometer plugging agent for drilling fluid and preparation method thereof |
| CN104498001A (en) * | 2014-12-26 | 2015-04-08 | 江西省萍乡市安华生物科技有限公司 | High-dehydration curing plugging agent and preparation method thereof |
-
2015
- 2015-11-19 CN CN201510801934.XA patent/CN106753279A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013052A (en) * | 2012-12-17 | 2013-04-03 | 吉林大学 | Degradable underground blocking material |
| CN102977866A (en) * | 2012-12-21 | 2013-03-20 | 中国海洋石油总公司 | High-water-loss curing plugging agent for plugging fissures |
| CN103265936A (en) * | 2013-04-18 | 2013-08-28 | 张家港市一达水泥混凝土外加剂有限公司 | Rapid plugging agent |
| CN103602323A (en) * | 2013-10-22 | 2014-02-26 | 西南石油大学 | Nanometer plugging agent for drilling fluid and preparation method thereof |
| CN104498001A (en) * | 2014-12-26 | 2015-04-08 | 江西省萍乡市安华生物科技有限公司 | High-dehydration curing plugging agent and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈家威: "《简明化学辞典》", 31 July 1987, 湖北辞书出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248183A (en) * | 2021-06-22 | 2021-08-13 | 山东孟友新材料科技有限责任公司 | Plugging agent prepared from glass slag and preparation method and application thereof |
| CN113248183B (en) * | 2021-06-22 | 2022-07-15 | 山东孟友新材料科技有限责任公司 | Plugging agent prepared from glass slag and preparation method and application thereof |
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