CN108947317A - A kind of oil-well cement defoaming agent, preparation method and application - Google Patents
A kind of oil-well cement defoaming agent, preparation method and application Download PDFInfo
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- CN108947317A CN108947317A CN201710350848.0A CN201710350848A CN108947317A CN 108947317 A CN108947317 A CN 108947317A CN 201710350848 A CN201710350848 A CN 201710350848A CN 108947317 A CN108947317 A CN 108947317A
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- Prior art keywords
- oil
- defoaming agent
- well cement
- defoaming
- parts
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/50—Defoamers, air detrainers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of oil-well cement defoaming agents, preparation method and application.Defoaming agent is by including that the raw material of following components is prepared: 70~80 parts of polyethers；0.1~1 part of Long carbon chain acid；10~20 parts of first cream；5~10 parts of monomer of defoaming；0.5~1.5 part of stabilizer；The defoaming monomer is tributyl phosphate, n-octyl alcohol or isooctanol；The stabilizer is POLYPROPYLENE GLYCOL, polyacrylamide or white oil.Defoaming agent of the invention is had excellent performance in terms of inhibiting water bubble with slurry and eliminating cement pulp foam, and dosage is few and efficient, does not influence cement slurry property, has broad popularization and application prospect.
Description
Technical field
The present invention relates to drilling technology fields, further say, be related to a kind of oil-well cement defoaming agent, preparation method and
Using.
Background technique
1~5% or so additive can be mixed in water in order to meet the needs of cementing operation and improve cement slurry property,
It include: PVA class fluid loss agent, styrene-butadiene latex, phenylpropyl alcohol polymerized emulsion, efficient spacer fluid etc., these contain high molecular polymerization
The solution of object and surfactant generates a large amount of bubble in water distribution and when mixed ash；The generation of bubble can make the close of cement slurry
Degree reduces by 20% or more；The mobility of cement slurry reduces at the same time, pumping difficulties；Can also thickening performance to cement slurry generate
Detrimental effect；For cement slurry between the waiting-on-cement, excessive bubble will increase the porosity of Behavior of Hardened Cement Paste, reduce cement strength, no
Conducive to raising cementing quality.
For defoaming agent in all trades and professions with extensively, domestic defoaming agent present Research is carried out on the basis of existing defoaming agent
Modified and compounding.It specifically includes that and 1) emulsifies: based on polysiloxanes, passing through addition highly efficiency compositional emulsifier and deionized water
Carry out emulsification compound experiment；2) it is esterified: carrying out esterification based on polyethers, increase its lipophilicity；3) it compounds: making to defoam
Agent is increasingly specialized.But country's active ingredient of defoaming agent is too low, dosage is all bigger, and function is relatively simple, for height
Defoaming capacity is limited under conditions of temperature, strong acid-base
Bubble mainly generates in the process for preparation of ground at the scene during cementing operation, when mixed with pulp-water and concrete grey
It closes, along with the centrifugal mixer of high speed, foam is generated clearly, and cement slurry density can be reduced to 1.70g/cm from 1.903It is left
The right side, excessive foam can overflow batch-handling mixer, replace to upper water and note or even cementing operation brings adverse effect, at present domestic defoaming
Agent has that dosage is excessive and defoams narrow sphere of action and defoaming, foam inhibition ability difference, and price is high again for external good product
It is expensive, for defoaming agent using under one's control.Therefore design synthesizes a kind of Novel oil well cement highly efficient multipurpose defoaming agent, solves
Petroleum works, which are cemented the well during field cement slurry is prepared, matches the problem that pulp-water foam inhibition and cement slurry mixture defoam.
Summary of the invention
To solve the problem in the prior art, the present invention provides a kind of oil-well cement defoaming agent, preparation method and
Using.By control charging proportion and synthesis technology, stable chemical performance is developed, the multiduty oil-well cement of low-carbon high-efficiency disappears
Infusion, the defoaming agent are had excellent performance in terms of inhibiting water bubble with slurry and eliminating cement pulp foam, and dosage is few and efficient, does not influence
Cement slurry property has broad popularization and application prospect.
An object of the present invention is to provide a kind of oil-well cement defoaming agent.
It is by including that the raw material of following components is prepared:
By raw material gross weight be 100 parts by weight in terms of,
The defoaming monomer is tributyl phosphate, n-octyl alcohol or isooctanol；
The stabilizer is POLYPROPYLENE GLYCOL, polyacrylamide or white oil.
Polyethers and Long carbon chain acid mainly play foam-inhibiting effect, first cream and defoaming monomer and mainly play defoaming, and stabilizer is main
Act the stability action for improving defoaming agent.
Wherein, preferably:
The purity of the polyethers is greater than 99%.
The Long carbon chain acid is advanced stearic acid or oleic acid.
First cream is made after being stirred heating by methyl-silicone oil and hydrophobic silicic aerogels.
Methyl-silicone oil viscosity is 500~1000 centipoises, and hydrophobic silicic aerogels account for the mass ratio 0.5~0.6% of methyl-silicone oil.
Heating temperature is 120~130 degree.
First cream is prepared according to the following steps:
Hydrophobic silicic aerogels and methyl-silicone oil are heated to 120~130 DEG C by dosage mixing, and revolving speed 400~
500rpm is stirred 2~3 hours.It specifically includes:
The second object of the present invention is to provide a kind of preparation method of oil-well cement defoaming agent.
The described method includes:
(1) by the dosage while reaction kettle is added in polyethers and Long carbon chain acid, slowly heats up, and equips condensing reflux pipe, temperature
Degree control is at 120~130 DEG C, 2~3h of reaction time；
(2) reaction temperature maintains 120~130 DEG C, and first cream, 2~3h of reaction time is added；
(3) cooling, reaction temperature is controlled at 70~80 DEG C, and defoaming monomer is added, and 1~2h of reaction time adds stabilization
The defoaming agent is made in agent, 1~2h of reaction time.
The third object of the present invention is to provide a kind of application of oil-well cement defoaming agent in oil well cement paste.
The amount ranges of defoaming agent are account for dry weight cement 0.5~1%.
Following technical scheme specifically can be used in the present invention:
A kind of oil-well cement efficient multi-purpose defoaming agent, including following each component and weight fraction: in terms of 100 parts by weight,
70~80 parts of polyethers, 0.1~1 part of Long carbon chain acid, 10~20 parts of first cream, 8~10 parts of monomer are defoamed, stabilizer 1~2.It is described to disappear
Steeping polymer is the polyethers that purity is greater than 99%；The Long carbon chain acid is the advanced stearic acid of graininess or liquid oleic acid；
First cream: pass through self-control, the methyl-silicone oil viscosity of selection: 500 centipoises, hydrophobic silicic aerogels specific surface area: 170m2/ g, hydrophobic hard charcoal
The black methyl-silicone oil quality specific gravity that accounts for is 0.5%, the two mixing is heated to 130 DEG C, 400~500rpm of revolving speed, stirring 2 is small
When be made.
The present invention is proposed its chemical stability and low-carbon high-efficiency higher in addition to excellent efficient defoaming capacity
Requirement, key technology further includes synthesis technology in addition to raw material proportioning: polyethers (L61) and advanced stearic acid while reaction is added
Kettle slowly heats up, and final temperature control is at 130 DEG C, reaction time 2h；First cream, reaction time 2h are added immediately；It is cooling, reaction
Temperature is controlled at 70 DEG C, is added tributyl phosphate immediately, reaction time 1h, adds white oil tackifier, reaction time 1h, finally
Rewinding, defoaming agent present faint yellow thick.
Compared with prior art, the beneficial effects of the present invention are:
(1) the case where defoaming agent modest viscosity, there is no the excessive poor fluidity of viscosity or viscosity too low layerings；
(2) foam inhibition effect is obvious, and applicability is wide, is not less than theory added with defoaming and the mortar architecture density value of foam inhibitor
It is worth density；
(3) defoaming effect is obvious, and water foam time foaming height with slurry for different oil-well cement slurry systems is less than 10mm
(foam inhibition ability), added with defoaming agent oil-well cement slurry system after high-speed stirred foam time be less than 10s (defoaming capacity).
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
The preparation of first cream:
The methyl-silicone oil viscosity of selection: 500 centipoises, hydrophobic silicic aerogels specific surface area: 170m2/ g, hydrophobic silicic aerogels account for first
Base silicone oil quality specific gravity is 0.5%, and the two mixing is heated to 130 DEG C, 400~500rpm of revolving speed, stirs 2 hours and makes
?.
Other raw materials used in embodiment are commercially available.
Embodiment 1:
The preparation process of defoaming agent is as follows.
In terms of 100 parts by weight, 70 parts of polyethers (L61), 0.1 part of advanced stearic acid reacts 2h under the conditions of 130 DEG C, is added
20 parts of first cream, under the conditions of 130 DEG C, 2h is reacted, is added 9 parts of tributyl phosphate, under the conditions of 70 DEG C, reacted 1h, add white
Dedicated 0.9 part of tackifier of oil, 1h is reacted, defoaming agent 1 is obtained.
Embodiment 2:
The preparation process of defoaming agent is as follows.
In terms of 100 parts by weight, 71 parts of polyethers (L61), 0.2 part of advanced stearic acid reacts 2h under the conditions of 130 DEG C, is added
18 parts of first cream, under the conditions of 130 DEG C, 2h is reacted, is added 10 parts of tributyl phosphate, under the conditions of 70 DEG C, reacted 1h, add white
Dedicated 0.8 part of tackifier of oil, 1h is reacted, defoaming agent 2 is obtained.
Embodiment 3:
The preparation process of defoaming agent is as follows.
In terms of 100 parts by weight, 72 parts of polyethers (L61), 0.3 part of advanced stearic acid reacts 2h under the conditions of 130 DEG C, is added
19 parts of first cream, under the conditions of 130 DEG C, 2h is reacted, is added 8 parts of tributyl phosphate, under the conditions of 70 DEG C, reacted 1h, add white
Dedicated 0.7 part of tackifier of oil, 1h is reacted, defoaming agent 3 is obtained.
Embodiment 4: oil-well cement slurry system.
G class g cement (100 parts), fluid loss agent 1 (4 parts), dispersing agent (1 part), retarder (1 part), defoaming agent 1 (1 part), from
Water (36 parts)
Embodiment 5: oil-well cement slurry system.
G class g cement (100 parts), fluid loss agent 2 (5 parts), dispersing agent (1 part), retarder (1 part), defoaming agent 2 (1 part), from
Water (36 parts)
Embodiment 6: oil-well cement slurry system.
G class g cement (100 parts), fluid loss agent 2 (5 parts), dispersing agent (1 part), retarder (1 part), defoaming agent 3 (1 part), from
Water (36 parts)
Embodiment 7: oil-well cement slurry system.
G class g cement (100 parts), latex emulsion (10 parts), latex stabilizer (2 parts), fluid loss agent 1 (2 parts), retarder (1
Part), defoaming agent 1 (1 part), tap water (28 parts)
1 contrast and experiment of table
Can be found that by the invention: for traditional cements slurry system (embodiment 4,5 and 6) cement slurry actual density and
The theoretical density of cement slurry is identical, and the actual density of latex cement slurry system (embodiment 7) cement is close compared with the theory of the cement
The relatively low 0.02g/cm of angle value3, but within the range of permission.It can be seen that oil well cement paste defoaming agent of the invention is applicable in model
It encloses extensively, and dosage is low and efficient.
Claims (10)
1. a kind of oil-well cement defoaming agent, it is characterised in that the defoaming agent is by including that the raw material of following components is prepared:
By raw material gross weight be 100 parts by weight in terms of,
The defoaming monomer is tributyl phosphate, n-octyl alcohol or isooctanol；
The stabilizer is POLYPROPYLENE GLYCOL, polyacrylamide or white oil.
2. oil-well cement defoaming agent as described in claim 1, it is characterised in that:
3. oil-well cement defoaming agent as described in claim 1, it is characterised in that:
The purity of the polyethers is greater than 99%.
4. oil-well cement defoaming agent as claimed in claim 3, it is characterised in that:
The Long carbon chain acid is advanced stearic acid or oleic acid.
5. oil-well cement defoaming agent as claimed in claim 4, it is characterised in that:
First cream is made after being stirred heating by methyl-silicone oil and hydrophobic silicic aerogels.
6. oil-well cement defoaming agent as claimed in claim 5, it is characterised in that:
Methyl-silicone oil viscosity is 500~1000 centipoises；
Hydrophobic silicic aerogels account for the mass ratio 0.5~0.6% of methyl-silicone oil.
7. oil-well cement defoaming agent as claimed in claim 6, it is characterised in that:
First cream is prepared according to the following steps:
Hydrophobic silicic aerogels and methyl-silicone oil are mixed by the dosage is heated to 120~130 DEG C, and 400~500rpm of revolving speed is stirred
It mixes 2~3 hours.
8. a kind of preparation method of the oil-well cement defoaming agent as described in one of claim 1~7, it is characterised in that the method
Include:
(1) by the dosage while reaction kettle is added in polyethers and Long carbon chain acid, slowly heats up, and equips condensing reflux pipe, temperature control
System is at 120~130 DEG C, 2~3h of reaction time；
(2) reaction temperature maintains 120~130 DEG C, and first cream, 2~3h of reaction time is added；
(3) cooling, reaction temperature is controlled at 70~80 DEG C, and defoaming monomer is added, and 1~2h of reaction time adds stabilizer, instead
1~2h between seasonable, is made the defoaming agent.
9. application of the oil-well cement defoaming agent in oil well cement paste as described in one of claim 1~7.
10. application of the oil-well cement defoaming agent as claimed in claim 9 in oil well cement paste, it is characterised in that:
The dosage of defoaming agent is the 0.5~1% of cement weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350848.0A CN108947317B (en) | 2017-05-18 | 2017-05-18 | Oil well cement defoaming agent, preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710350848.0A CN108947317B (en) | 2017-05-18 | 2017-05-18 | Oil well cement defoaming agent, preparation method and application |
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| CN108947317A true CN108947317A (en) | 2018-12-07 |
| CN108947317B CN108947317B (en) | 2020-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240173A (en) * | 2019-07-18 | 2021-01-19 | 中国石油化工股份有限公司 | Oil and gas well sand washing and well flushing method based on foam circulation, and defoaming solution and foaming solution for oil and gas well sand washing and well flushing |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004299930A (en) * | 2003-03-28 | 2004-10-28 | Nof Corp | Additive for cement |
| US20080017078A1 (en) * | 2005-06-14 | 2008-01-24 | Manfred Bichler | Liquid admixture composition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240173A (en) * | 2019-07-18 | 2021-01-19 | 中国石油化工股份有限公司 | Oil and gas well sand washing and well flushing method based on foam circulation, and defoaming solution and foaming solution for oil and gas well sand washing and well flushing |
| CN112240173B (en) * | 2019-07-18 | 2023-06-02 | 中国石油化工股份有限公司 | Foam circulation-based oil-gas well sand washing method, defoaming liquid for oil-gas well sand washing and foaming liquid |
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| CN108947317B (en) | 2020-11-13 |
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