CN105936819A - Plugging agent for oil-based drilling fluid and preparation method thereof - Google Patents
Plugging agent for oil-based drilling fluid and preparation method thereof Download PDFInfo
- Publication number
- CN105936819A CN105936819A CN201610254867.9A CN201610254867A CN105936819A CN 105936819 A CN105936819 A CN 105936819A CN 201610254867 A CN201610254867 A CN 201610254867A CN 105936819 A CN105936819 A CN 105936819A
- Authority
- CN
- China
- Prior art keywords
- drilling fluid
- sealing agent
- oil base
- base drilling
- fluid sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 50
- 239000012530 fluid Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 42
- -1 alkenyl benzene Chemical compound 0.000 claims abstract description 29
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 24
- 239000011147 inorganic material Substances 0.000 claims abstract description 24
- 239000000178 monomer Substances 0.000 claims abstract description 21
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920001577 copolymer Polymers 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 44
- 239000000843 powder Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 9
- 239000000693 micelle Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000007334 copolymerization reaction Methods 0.000 claims description 8
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 6
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical group COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 3
- SOGAXMICEFXMKE-UHFFFAOYSA-N alpha-Methyl-n-butyl acrylate Natural products CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 3
- NYSNOHUHSPLWKP-UHFFFAOYSA-N butyl prop-2-enoate;1-ethenyl-2-methylbenzene Chemical compound CCCCOC(=O)C=C.CC1=CC=CC=C1C=C NYSNOHUHSPLWKP-UHFFFAOYSA-N 0.000 claims description 3
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 claims description 3
- RMXUDXHAJSELLC-UHFFFAOYSA-N prop-1-ene;toluene Chemical compound CC=C.CC1=CC=CC=C1 RMXUDXHAJSELLC-UHFFFAOYSA-N 0.000 claims description 3
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001694 spray drying Methods 0.000 claims description 3
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 3
- 239000000805 composite resin Substances 0.000 abstract description 9
- 239000002981 blocking agent Substances 0.000 abstract description 3
- 239000010426 asphalt Substances 0.000 abstract description 2
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000000518 rheometry Methods 0.000 description 3
- 239000003077 lignite Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a blocking agent for oil-based drilling fluid and a preparation method thereof, wherein the blocking agent is formed by chemical reaction and physical mixing, and is composed of a copolymer obtained by copolymerizing three monomers, namely alkenyl benzene, acrylic ester and acrylic acid, and an oleophilic type hard inorganic material, wherein: the mass ratio of the alkenyl benzene to the acrylic ester to the acrylic acid to the lipophilic hard inorganic material is as follows: 15-30: 10-25: 1: 8 to 20. The invention relates to a high-strength composite resin plugging agent for oil-based drilling fluid, which is formed by chemical reaction and physical mixing, has the same plastic deformation characteristic as an asphalt plugging agent, is not limited by bottom hole temperature, has no influence on rheological property of the drilling fluid, and has wider application range because a hard inorganic material is added into the plugging agent.
Description
Technical field
The present invention relates to oil and gas well drilling technical field, specifically relate to a kind of oil base drilling fluid sealing agent and preparation method.
Background technology
In drilling fluid, use the sealing agent of multiple particle diameter or material, use its respective plugging action mechanism, the drilling fluid plugging effect to stratum microcrack can be strengthened, thus reach to maintain the purpose of bore hole wellbore stability.At present, conventional drilling fluid sealing agent mainly includes the inorganic agents such as calcium carbonate superfine powder, brown coal, Colophonium.Such as Publication No. CN103146362A, publication date is that the Chinese patent literature on June 12nd, 2013 discloses a kind of drilling fluid broad spectrum type high-efficient blocking agent, the weight percent of each component when granularity is: the polymer water uptake expansion resin 20% ~ 50% being coated with by paraffin, and granularity is 270 ~ 400 mesh；Chemical fibre 10% ~ 20%, granularity is 140 ~ 170 mesh；Velveteen powder 1% ~ 5%, granularity is 80 ~ 120 mesh；Peanut hull meal 5% ~ 15%, granularity is 60 ~ 100 mesh；Lignum nanmu powder 5% ~ 15%, granularity is 80 ~ 120 mesh；Asphalt powder 10% ~ 20%, granularity is 60 ~ 100 mesh；Walnut shell powder 1% ~ 10%, granularity is 100 ~ 140 mesh；Calcium carbonate superfine powder 1% ~ 10%, granularity is 900 ~ 1100 mesh；The above-mentioned polymer water uptake expansion resin being coated with by paraffin is AMPS-AM-AA terpolymer polymer water uptake expansion resin.This invention has the effect of wide spectrum closure, and to micron-sized crack, grade is respectively provided with good plugging effect, and this product is to oil and gas reservoir fanout free region, energy reservoir protec-tion, and has no adverse effects property of drilling fluid, thus becomes a kind of good drill-feeding plugging agent.
But, prior art with above-mentioned patent documentation as representative, wherein, calcium carbonate superfine powder and brown coal class sealing agent belong to rigidity sealing agent, during closure, owing to it has Incoercibility, easily slip at the microcrack of stratum under drilling well liquid columnpressure and drilling liquid flow mechanics act on jointly, do not reach preferable plugging effect；Colophonium class is had to the flexible blockage agent of plastic deformation feature, softening point and the microcrack formation temperature requiring Colophonium matches its preferable plugging effect of competence exertion, but, in the production process of Colophonium class sealing agent, its softening point is unmanageable, meanwhile, the membership that adds of Colophonium class sealing agent affects drilling fluid rheology, makes drilling fluid rheology be deteriorated.
Summary of the invention
It is contemplated that for the defect existing for above-mentioned prior art and deficiency, a kind of oil base drilling fluid sealing agent is provided, the present invention is to be puddled a kind of oil base drilling fluid high-strength composite resin class sealing agent of formation by chemical reaction and physics, this sealing agent has the plastic deformation characteristic identical with Colophonium class sealing agent, but do not limited by bottom hole temperature (BHT), the rheological characteristic of drilling fluid is not the most affected, simultaneously, adding hard inorganic material in this sealing agent, the scope of application is the most extensive.
Meanwhile, present invention also offers the preparation method of oil base drilling fluid sealing agent.
The present invention realizes by using following technical proposals:
A kind of oil base drilling fluid sealing agent, it is characterized in that: the copolymer obtained by alkenyl benzene, acrylate and three kinds of monomer copolymerizations of acrylic acid forms with lipophilic hard inorganic material, wherein: the mass ratio of alkenyl benzene, acrylate, acrylic acid and lipophilic hard inorganic material is: 15～30:10～25:1:8～20.
Described alkenyl benzene is styrene, propylene toluene, the one in vinyltoluene.
Described acrylate is methyl methacrylate, butyl acrylate, lauryl methacrylate, comprises short chain monomer and long-chained monomer in two kinds in octadecyl methacrylate, and these two kinds simultaneously.
Described copolymer specifically 2-methyl-2-styrene methylacrylate, 2-propylene Toluene-2,4-diisocyanate-lauryl, 2-acrylic acid-2 butyl methacrylate, the one in 2-vinyltoluene butyl acrylate.
Described lipophilic hard inorganic material is the activated quartz powder through the modification of surface oleophylic, active superfine calcium carbonate and the one in activity glass powder.
The preparation method of a kind of oil base drilling fluid sealing agent, it is characterised in that step is as follows:
A, in equipped with the there-necked flask of distilled water add 5% NPE ammonium sulfate, stirring at low speed 30min is to mixing mixing；
B, alkenyl benzene, acrylic acid, acrylic ester monomer and hard inorganic material being added in there-necked flask according to mass ratio 15～30:1:10～25:8～20, stirring at low speed 30min is to mix homogeneously；
C, be slowly added dropwise in there-necked flask 2% ammonium persulfate aqueous solution, 30min adds, and is kept stirring for speed, and bath temperature is slowly promoted to 70 DEG C～80 DEG C, be incubated 6h；
D, be cooled to 30 DEG C～40 DEG C after, add 5% ammonia spirit the pH value of reaction system is adjusted to 8.0, continue to be slowly stirred 10min, obtain micelle emulsion；
E, use spray drying device, be dried to powder by micelle emulsion, i.e. obtain duplex transportation sealing agent.
In described step a, more particularly, adding the NPE ammonium sulfate of 5% in the there-necked flask equipped with 300ml distilled water, stirring at low speed 30min is to mixing mixing.
In described step b, alkenyl benzene, acrylic acid, acrylic ester monomer and hard inorganic material add in there-necked flask according to mass ratio 20:1:20:15.
In described step c, bath temperature is promoted to 75 DEG C.
In described step d, after being cooled to 35 DEG C, the pH value of reaction system is adjusted to 8.0 by the ammonia spirit adding 5%, continues to be slowly stirred 10min, obtains micelle emulsion.
Compared with prior art, what the present invention was reached has the beneficial effect that:
1, the high-strength composite resin class sealing agent that the present invention is formed is the joint product of inorganic material and organic material, and soft or hard combines, and sealing ratiod is higher, and the scope of application is wider.
2, the high-strength composite resin class sealing agent that the present invention is formed has substantially no effect on the rheological characteristic of drilling fluid after adding oil base drilling fluid, can significantly improve the shut-off capacity of drilling fluid simultaneously, and reduce the leak-off of drilling fluid.
3, the raw material of synthesizing high-strength duplex transportation sealing agent is generalization chemical product, originates quite varied, and synthesis technique is simple, safe and environment-friendly, easily operate, it is simple to commercial production.
4, by high-strength composite resin class sealing agent under the conditions of identical dosage, than other sealing agent, there is higher shut-off capacity；
5, high-strength composite resin class sealing agent is while significantly improving drilling fluid shut-off capacity and reducing drilling fluid filtration, and drilling fluid rheology does not produce impact.
6, the high-strength composite resin class sealing agent that the present invention is formed has efficient shut-off capacity and will not impact rheological characteristic, can assist the filter loss reducing drilling fluid simultaneously.It follows that this high-strength composite resin class sealing agent is applicable to prepare the oil base drilling fluid with the strong shut-off capacity of high temperature resistance, especially preparation meets the strong closure oil base drilling fluid system of shale gas well horizontal segment drilling well demand.
7, by the drilling fluid of high-strength composite resin class sealing agent preparation, there is good shut-off capacity, be very suitable for shale gas well horizontal segment creeps into operation, borehole wall stability can be effectively improved, reduce and bore lower complex accident, and can recycling thus reduce cost of drilling engineering further, there is important economic benefit and be widely applied prospect.
Detailed description of the invention
Embodiment 1
The invention discloses a kind of oil base drilling fluid sealing agent, its copolymer obtained by alkenyl benzene, acrylate and three kinds of monomer copolymerizations of acrylic acid forms with lipophilic hard inorganic material, wherein: copolymer and the mass ratio of lipophilic hard inorganic material that alkenyl benzene, acrylate and three kinds of monomer copolymerizations of acrylic acid obtain be: 15:10:1:8.
Embodiment 2
The invention discloses a kind of oil base drilling fluid sealing agent, its copolymer obtained by alkenyl benzene, acrylate and three kinds of monomer copolymerizations of acrylic acid forms with lipophilic hard inorganic material, wherein: copolymer and the mass ratio of lipophilic hard inorganic material that alkenyl benzene, acrylate and three kinds of monomer copolymerizations of acrylic acid obtain be: 30:25:1:20.
Embodiment 3
The invention discloses a kind of oil base drilling fluid sealing agent, its copolymer obtained by alkenyl benzene, acrylate and three kinds of monomer copolymerizations of acrylic acid forms with lipophilic hard inorganic material, wherein: copolymer and the mass ratio of lipophilic hard inorganic material that alkenyl benzene, acrylate and three kinds of monomer copolymerizations of acrylic acid obtain be: 20:20:1:12.
Embodiment 4
On the basis of above-described embodiment, described alkenyl benzene is styrene, propylene toluene, the one in vinyltoluene.Described acrylate is methyl methacrylate, butyl acrylate, lauryl methacrylate, comprises short chain monomer and long-chained monomer in two kinds in octadecyl methacrylate, and these two kinds simultaneously.Described copolymer specifically 2-methyl-2-styrene methylacrylate, 2-propylene Toluene-2,4-diisocyanate-lauryl, 2-acrylic acid-2 butyl methacrylate, the one in 2-vinyltoluene butyl acrylate.Described lipophilic hard inorganic material is the activated quartz powder through the modification of surface oleophylic, active superfine calcium carbonate and the one in activity glass powder.
Above-described embodiment 1-3 all uses chemical reaction commonly used in the art and physics to puddle to obtain oil base drilling fluid sealing agent.
Embodiment 5
The invention discloses the preparation method of a kind of oil base drilling fluid sealing agent, its step is as follows:
A, in equipped with the there-necked flask of distilled water add 5% NPE ammonium sulfate, stirring at low speed 30min is to mixing mixing；
B, alkenyl benzene, acrylic acid, acrylic ester monomer and hard inorganic material being added in there-necked flask according to mass ratio 15～30:1:10～25:8～20, stirring at low speed 30min is to mix homogeneously；
C, be slowly added dropwise in there-necked flask 2% ammonium persulfate aqueous solution, 30min adds, and is kept stirring for speed, and bath temperature is slowly promoted to 70 DEG C～80 DEG C, be incubated 6h；
D, be cooled to 30 DEG C～40 DEG C after, add 5% ammonia spirit the pH value of reaction system is adjusted to 8.0, continue to be slowly stirred 10min, obtain micelle emulsion；
E, use spray drying device, be dried to powder by micelle emulsion, i.e. obtain duplex transportation sealing agent.
Embodiment 6
On the basis of above-described embodiment, the more excellent scheme of the present invention is: in described step a, more particularly, adding the NPE ammonium sulfate of 5% in the there-necked flask equipped with 300ml distilled water, low speed (200-250 rpm) stirring 30min is to mixing mixing.In described step b, alkenyl benzene, acrylic acid, acrylic ester monomer and hard inorganic material add in there-necked flask according to mass ratio 20:1:20:15.In described step c, bath temperature is promoted to 75 DEG C.In described step d, after being cooled to 35 DEG C, the pH value of reaction system is adjusted to 8.0 by the ammonia spirit adding 5%, continues to be slowly stirred 10min, obtains micelle emulsion.
Claims (10)
1. an oil base drilling fluid sealing agent, it is characterized in that: the copolymer obtained by alkenyl benzene, acrylate and three kinds of monomer copolymerizations of acrylic acid forms with lipophilic hard inorganic material, wherein: the mass ratio of alkenyl benzene, acrylate, acrylic acid and lipophilic hard inorganic material is: 15～30:10～25:1:8～20.
A kind of oil base drilling fluid sealing agent the most according to claim 1, it is characterised in that: described alkenyl benzene is styrene, propylene toluene, the one in vinyltoluene.
A kind of oil base drilling fluid sealing agent the most according to claim 1, it is characterized in that: described acrylate is methyl methacrylate, butyl acrylate, lauryl methacrylate, in octadecyl methacrylate two kinds, and these two kinds comprise short chain monomer and long-chained monomer simultaneously.
A kind of oil base drilling fluid sealing agent the most according to claim 1, it is characterized in that: described copolymer specifically 2-methyl-2-styrene methylacrylate, 2-propylene Toluene-2,4-diisocyanate-lauryl, 2-acrylic acid-2 butyl methacrylate, the one in 2-vinyltoluene butyl acrylate.
A kind of oil base drilling fluid sealing agent the most according to claim 1, it is characterised in that: described lipophilic hard inorganic material is the activated quartz powder through the modification of surface oleophylic, active superfine calcium carbonate and the one in activity glass powder.
6. the preparation method of an oil base drilling fluid sealing agent, it is characterised in that step is as follows:
A, in equipped with the there-necked flask of distilled water add 5% NPE ammonium sulfate, stirring 30min to mixing mixing；
B, alkenyl benzene, acrylic acid, acrylic ester monomer and hard inorganic material being added in there-necked flask according to mass ratio 15～30:1:10～25:8～20,30min is to mix homogeneously in stirring；
C, in there-necked flask drip 2% ammonium persulfate aqueous solution, 30min adds, and is kept stirring for speed, and bath temperature is promoted to 70 DEG C～80 DEG C, be incubated 6h；
D, be cooled to 30 DEG C～40 DEG C after, the pH value of reaction system is adjusted to 8.0 by the ammonia spirit adding 5%, continues stirring 10min, obtains micelle emulsion；
E, use spray drying device, be dried to powder by micelle emulsion, i.e. obtain duplex transportation sealing agent.
The preparation method of a kind of oil base drilling fluid sealing agent the most according to claim 6, it is characterized in that: in described step a, more particularly, adding the NPE ammonium sulfate of 5% in the there-necked flask equipped with 300ml distilled water, 30min is to mixing mixing in stirring.
The preparation method of a kind of oil base drilling fluid sealing agent the most according to claim 6, it is characterised in that: in described step b, alkenyl benzene, acrylic acid, acrylic ester monomer and hard inorganic material add in there-necked flask according to mass ratio 20:1:20:15.
The preparation method of a kind of oil base drilling fluid sealing agent the most according to claim 6, it is characterised in that: in described step c, bath temperature is promoted to 75 DEG C.
The preparation method of a kind of oil base drilling fluid sealing agent the most according to claim 6, it is characterised in that: in described step d, after being cooled to 35 DEG C, the pH value of reaction system is adjusted to 8.0 by the ammonia spirit adding 5%, continues stirring 10min, obtains micelle emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610254867.9A CN105936819A (en) | 2016-04-22 | 2016-04-22 | Plugging agent for oil-based drilling fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610254867.9A CN105936819A (en) | 2016-04-22 | 2016-04-22 | Plugging agent for oil-based drilling fluid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105936819A true CN105936819A (en) | 2016-09-14 |
Family
ID=57152033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610254867.9A Pending CN105936819A (en) | 2016-04-22 | 2016-04-22 | Plugging agent for oil-based drilling fluid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105936819A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987807A (en) * | 2017-11-28 | 2018-05-04 | 中国石油集团渤海钻探工程有限公司 | Shell core formula oil base drilling fluid leak stopping bridge formation particle and preparation method thereof |
| CN108300435A (en) * | 2018-02-08 | 2018-07-20 | 陕西海睿能源技术服务有限公司 | A kind of embedded high pressure-bearing sealing agent |
| CN108503744A (en) * | 2018-03-28 | 2018-09-07 | 中国石油大学(华东) | Acrylic emulsion and its preparation method and application with nucleocapsid |
| CN109097013A (en) * | 2018-09-06 | 2018-12-28 | 中国海洋石油集团有限公司 | A kind of high temperature resisting type oil base drilling fluid pressure-bearing sealing agent and preparation method thereof |
| CN111484833A (en) * | 2020-03-27 | 2020-08-04 | 中国石油天然气集团有限公司 | Low-friction film-forming plugging agent for high-temperature oil-based drilling fluid and preparation method and application thereof |
| 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 |
| CN113416272A (en) * | 2021-06-22 | 2021-09-21 | 西南石油大学 | Synthesis of nano emulsion plugging agent and oil-based drilling fluid |
| CN113583644A (en) * | 2021-08-09 | 2021-11-02 | 中国石油化工集团有限公司 | High-temperature-resistant variable-particle-size oil-based drilling fluid composite plugging agent and preparation method thereof |
| CN115010848A (en) * | 2022-07-19 | 2022-09-06 | 中国石油天然气集团有限公司 | Plugging agent for drilling fluid and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001031959A (en) * | 1999-07-22 | 2001-02-06 | Nippon Paper Industries Co Ltd | Agent for adjusting watertightness and slurry- stabilizing liquid for excavation using same |
| CN103013478A (en) * | 2012-11-29 | 2013-04-03 | 蒋官澄 | Plugging material used for oil base drilling fluid, and preparation method thereof |
| CN103602323A (en) * | 2013-10-22 | 2014-02-26 | 西南石油大学 | Nanometer plugging agent for drilling fluid and preparation method thereof |
| CN104194750A (en) * | 2014-07-30 | 2014-12-10 | 中国石油天然气集团公司 | Nanometer blocking agent for oil-based drilling fluid and preparation method of nanometer blocking agent |
| CN104403058A (en) * | 2014-10-31 | 2015-03-11 | 中国石油化工集团公司 | Latex plugging agent for drilling fluid and preparation method thereof |
| CN105462568A (en) * | 2015-12-02 | 2016-04-06 | 中国石油集团川庆钻探工程有限公司 | Resin nanoparticle latex plugging agent for drilling fluid and preparation method thereof |
-
2016
- 2016-04-22 CN CN201610254867.9A patent/CN105936819A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001031959A (en) * | 1999-07-22 | 2001-02-06 | Nippon Paper Industries Co Ltd | Agent for adjusting watertightness and slurry- stabilizing liquid for excavation using same |
| CN103013478A (en) * | 2012-11-29 | 2013-04-03 | 蒋官澄 | Plugging material used for oil base drilling fluid, and preparation method thereof |
| CN103602323A (en) * | 2013-10-22 | 2014-02-26 | 西南石油大学 | Nanometer plugging agent for drilling fluid and preparation method thereof |
| CN104194750A (en) * | 2014-07-30 | 2014-12-10 | 中国石油天然气集团公司 | Nanometer blocking agent for oil-based drilling fluid and preparation method of nanometer blocking agent |
| CN104403058A (en) * | 2014-10-31 | 2015-03-11 | 中国石油化工集团公司 | Latex plugging agent for drilling fluid and preparation method thereof |
| CN105462568A (en) * | 2015-12-02 | 2016-04-06 | 中国石油集团川庆钻探工程有限公司 | Resin nanoparticle latex plugging agent for drilling fluid and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 匡绪兵: "具核结构的油基钻井液封堵剂的研制", 《钻井液与完井液》 * |
| 王建华 等: "油基钻井液用纳米聚合物封堵剂的研制", 《钻井液与完井液》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987807A (en) * | 2017-11-28 | 2018-05-04 | 中国石油集团渤海钻探工程有限公司 | Shell core formula oil base drilling fluid leak stopping bridge formation particle and preparation method thereof |
| CN108300435A (en) * | 2018-02-08 | 2018-07-20 | 陕西海睿能源技术服务有限公司 | A kind of embedded high pressure-bearing sealing agent |
| CN108300435B (en) * | 2018-02-08 | 2021-09-07 | 陕西海睿能源技术服务有限公司 | Embedded high-pressure-bearing plugging agent |
| CN108503744A (en) * | 2018-03-28 | 2018-09-07 | 中国石油大学(华东) | Acrylic emulsion and its preparation method and application with nucleocapsid |
| CN108503744B (en) * | 2018-03-28 | 2019-09-06 | 中国石油大学(华东) | Acrylic emulsion and its preparation method and application with core-shell structure |
| CN109097013A (en) * | 2018-09-06 | 2018-12-28 | 中国海洋石油集团有限公司 | A kind of high temperature resisting type oil base drilling fluid pressure-bearing sealing agent and preparation method thereof |
| CN111484833B (en) * | 2020-03-27 | 2022-08-12 | 中国石油天然气集团有限公司 | Low-friction film-forming plugging agent for high-temperature oil-based drilling fluid and preparation method and application thereof |
| CN111484833A (en) * | 2020-03-27 | 2020-08-04 | 中国石油天然气集团有限公司 | Low-friction film-forming plugging agent for high-temperature oil-based drilling fluid and preparation method and application thereof |
| 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 |
| CN113416272B (en) * | 2021-06-22 | 2022-06-07 | 西南石油大学 | Synthesis of nano emulsion plugging agent and oil-based drilling fluid |
| 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 |
| CN113416272A (en) * | 2021-06-22 | 2021-09-21 | 西南石油大学 | Synthesis of nano emulsion plugging agent and oil-based drilling fluid |
| CN113583644A (en) * | 2021-08-09 | 2021-11-02 | 中国石油化工集团有限公司 | High-temperature-resistant variable-particle-size oil-based drilling fluid composite plugging agent and preparation method thereof |
| CN115010848A (en) * | 2022-07-19 | 2022-09-06 | 中国石油天然气集团有限公司 | Plugging agent for drilling fluid and preparation method thereof |
| CN115010848B (en) * | 2022-07-19 | 2023-11-14 | 中国石油天然气集团有限公司 | Plugging agent for drilling fluid and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105936819A (en) | Plugging agent for oil-based drilling fluid and preparation method thereof | |
| CN106243266B (en) | A kind of tackifier for drilling fluid and preparation method thereof, application | |
| CN105462568B (en) | Resin nanoparticle latex plugging agent for drilling fluid and preparation method thereof | |
| CN104694092A (en) | Water-based drilling fluid of shale gas horizontal well reinforced well wall and application thereof | |
| CN103951785B (en) | Fracturing fluid drag reducer and preparation method and application thereof | |
| CN107245329B (en) | Deep-well sulphonated polymer mud and preparation method thereof | |
| CN103710008B (en) | A kind of high temperature resistant drilling fluids fluid loss additive and preparation method thereof | |
| CN105131913B (en) | Reverse wetting agent and container horizon protective agent composition and its application suitable for hyposmosis ultra-low permeability reservoir | |
| CN104388066B (en) | Preparation method of plugging agent for drilling fluid | |
| CN102603985A (en) | High-temperature-resistant while-drilling plugging agent and preparation method thereof | |
| CN104610489B (en) | A kind of pressure break friction reducer and preparation method thereof | |
| CN103740340B (en) | Expansion consolidation type plugging agent | |
| CN102358771B (en) | Temperature resistant, non-crosslinked and biodegradable gel leak-stopping agent and preparation method thereof | |
| CN104610938B (en) | High temperature and salt resistance encapsulating agent for drilling fluid and preparation method of high temperature and salt resistance encapsulating agent | |
| CN107312510B (en) | High-temperature cross-linking Drilling Fluid Technique for Deep and preparation method thereof | |
| CN102191022A (en) | Low-emulsifier-content oil-base drilling fluid | |
| WO2015074588A1 (en) | Zirconium dispersed-particle gel combination flooding system and preparation method thereof | |
| WO2018108186A1 (en) | Authigenic acid-induced tackifying control system having oil washing function and preparation method therefor | |
| CN106554462A (en) | Coating agent and its preparation method and application and oil drilling drilling fluid | |
| CN103666439A (en) | Seawater-based instant fracturing fluid and preparation method thereof | |
| Chen | Polyacrylamide and its derivatives for oil recovery | |
| CN107629768A (en) | A kind of superhigh temperature resistant water-base drilling fluid | |
| CN110591023B (en) | Amphiphilic polymer containing capped polyether structure and preparation and application thereof | |
| CN111218268B (en) | Slickwater for compact sandstone reservoir and preparation method thereof | |
| CN109233757B (en) | Drilling fluid sealing agent methyl silicon resin quasi polymer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160914 |