CN106398661A - High temperature-resisting fluid loss agent for drilling fluid and preparation method thereof - Google Patents
High temperature-resisting fluid loss agent for drilling fluid and preparation method thereof Download PDFInfo
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- CN106398661A CN106398661A CN201610786649.XA CN201610786649A CN106398661A CN 106398661 A CN106398661 A CN 106398661A CN 201610786649 A CN201610786649 A CN 201610786649A CN 106398661 A CN106398661 A CN 106398661A
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- high temperature
- sulfonated
- drilling fluid
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- fluid loss
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- 238000005553 drilling Methods 0.000 title claims abstract description 25
- 239000012530 fluid Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 43
- 229920002472 Starch Polymers 0.000 claims abstract description 36
- 239000008107 starch Substances 0.000 claims abstract description 36
- 235000019698 starch Nutrition 0.000 claims abstract description 36
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003381 stabilizer Substances 0.000 claims abstract description 24
- 125000002091 cationic group Chemical group 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 23
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 9
- 239000003077 lignite Substances 0.000 claims abstract description 9
- 125000001453 quaternary ammonium group Chemical group 0.000 claims abstract description 9
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229940123973 Oxygen scavenger Drugs 0.000 claims description 18
- 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 claims description 12
- 235000011187 glycerol Nutrition 0.000 claims description 12
- 150000002170 ethers Chemical class 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- -1 tertiary amino alkyl ether Chemical class 0.000 claims description 8
- 230000032050 esterification Effects 0.000 claims description 6
- 238000005886 esterification reaction Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims 2
- UKTDQTGMXUHPIF-UHFFFAOYSA-N [Na].S(O)(O)=O Chemical group [Na].S(O)(O)=O UKTDQTGMXUHPIF-UHFFFAOYSA-N 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001603 reducing effect Effects 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 3
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 abstract 1
- BQACOLQNOUYJCE-FYZZASKESA-N Abietic acid Natural products CC(C)C1=CC2=CC[C@]3(C)[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1 BQACOLQNOUYJCE-FYZZASKESA-N 0.000 abstract 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 abstract 1
- 239000010426 asphalt Substances 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 20
- 239000000203 mixture Substances 0.000 description 13
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical group [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 10
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 239000012267 brine Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 235000010265 sodium sulphite Nutrition 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007059 acute toxicity Effects 0.000 description 2
- 231100000403 acute toxicity Toxicity 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000000025 natural resin Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- LCDFWRDNEPDQBV-UHFFFAOYSA-N formaldehyde;phenol;urea Chemical class O=C.NC(N)=O.OC1=CC=CC=C1 LCDFWRDNEPDQBV-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229940080314 sodium bentonite Drugs 0.000 description 1
- 229910000280 sodium bentonite Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000006277 sulfonation reaction Methods 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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
-
- 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
-
- 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)
- Compositions Of Macromolecular Compounds (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a high temperature-resisting fluid loss agent for drilling fluid. The high temperature-resisting fluid loss agent is characterized by being prepared from the following components and raw materials in percentage by mass: 10 to 15 percent of abietic acid, 8 to 12 percent of glycerol, 30 to 40 percent of sulfonated bitumen, 10 to 12 percent of cationic starch, 10 to 20 percent of temporary plugging agent, 12 to 14 percent of high temperature stabilizer and 0.5 to 1.0 percent of deoxidant, wherein the cationic starch is prepared from starch tert-amino alkyl ether and quaternary ammonium starch ether; the high temperature stabilizer is prepared from sulfonated phenol-formaldehyde resin and sulfonated lignite resin; the temporary plugging agent is prepared from tert-butyl phenolic curing resin, octyl phenolic curing resin and calcium carbonate. The high-temperature resistance is up to 250 DEG C, no blistering exists, the viscosity effect is low, the compatibility is good, a product contains rigid particles and softening film-forming particles in different size grading, the product directly participate in mud cake forming, a high-strength adsorption film is formed on the surface of the mud cake, the permeability rate of the mud cake is reduced, the quality of the mud cake is improved, and the function of reducing high-temperature high-pressure filter loss is achieved.
Description
Technical field
The present invention relates to oil gas well mining field, more particularly, to a kind of drilling fluid high temperature resistance fluid loss agent and its preparation side
Method.
Background technology
At present, China is land and offshore oil natural gas extraction is all to deep layer (underground 4500m is with depth), ultra deep (underground
6000m is with depth), and the oily field such as shale gas extends, such as Sichuan, Xinjiang, South Sea Deng You area.Drilling fluid in drilling process
It is in high temperature (temperature of 220-250 DEG C of even more high), high pressure (more than 70MPa), the condition such as high density (more than 2.0g/cm3)
In, it is easily caused the technical barriers such as mud cake quality is poor, filter loss is big.The fluid loss additive of prior art is with high molecular polymerization species, corruption
Grow acid amide class, lignin and pitch class in the majority.But such fluid loss additive easily increases frictional resistance and relative molecular mass is higher, is
Play filtrate reducing effect under salt-water drilling fluid and hot conditions, be necessary for improving addition, thus can arrive and lead to drilling fluid
Viscosity is too high, and mud cake is blocked up, instead results in filter loss and increases.
Content of the invention
The present invention provides a kind of drilling fluid high temperature resistance fluid loss agent and preparation method thereof, solves above-mentioned prior art not
Foot, is synthesized by natural resin, high-temperature stabilizer, cationic monomer etc., and temperature resistance is up to 250 DEG C, non-foaming, and viscosity effect is low, joins
5 property are good, the rigid particles joined containing different-grain diameter level, can soften film forming particle in product, formed by the direct mud cake that participates in,
And form high intensity adsorbed film on mud cake surface, reduce mud cake permeability, improvement of mud cake, reduce HTHP leak-off
The effect of amount.
In order to realize the purpose of the present invention, intend adopting following technology：
A kind of drilling fluid is with high temperature resistance fluid loss agent it is characterised in that by following components raw material according to quality and 100% structure
Become：
Rosin acid 10～15%；
Glycerine 8～12%；
Sulfonated gilsonite 30～40%；
Cationic starch 10～12%；
Diverting agent 10～20%；
High-temperature stabilizer 12～14%；
Oxygen scavenger 0.5～1.0%；
Wherein, cationic starch is made up of starch tertiary amino alkyl ether and quaternary ammonium starch ethers, and high-temperature stabilizer is by sulphonated phenol
Urea formaldehyde and sulfonated lignite resin are constituted, and described diverting agent is by tert-Butyl Phenolic Curing Resin, Octylphenolic Curing Resin, calcium carbonate
Constitute.
Further, the starch tertiary amino alkyl ether in described cationic starch and quaternary ammonium starch ethers ratio are 1:1.5.
Further, the tert-Butyl Phenolic Curing Resin in described diverting agent, Octylphenolic Curing Resin, calcium carbonate proportion are 8:
10:5.
Further, the sulfonated phenol formaldehyde resin in described high-temperature stabilizer and sulfonated lignite resin ratio are 1:1.
Described oxygen scavenger is sodium sulfite.
A kind of preparation method of drilling fluid high temperature resistance fluid loss agent is it is characterised in that comprise the following steps：
Step a：According to component proportion, each raw material is got the raw materials ready；
Step b：Add glycerine in rosin acid, and after stirring 2h under the conditions of 170-190 DEG C, esterification occurs；
Step c：Add sulfonated gilsonite, cationic starch, diverting agent, high-temperature stabilizer, oxygen scavenger, in 120 DEG C of conditions
Under be stirred mix, after 3-4h, prepared drilling fluid high temperature resistance fluid loss agent.
Beneficial effects of the present invention：
Prepared drilling fluid high temperature resistance fluid loss agent, abbreviation JNJS-220 afterwards, by natural resin, high-temperature stabilizer, sun from
Sub- monomer etc. synthesizes, and temperature resistance is up to 250 DEG C, non-foaming, and viscosity effect is low, has good cooperative effect with other inorganic agents and joins
Wu Xing.The rigid particles joined containing different-grain diameter level in product, film forming particle can be softened, be formed by the direct mud cake that participates in, and
Form high intensity adsorbed film on mud cake surface, reduce mud cake permeability, improvement of mud cake with closure principle, reduce height
The effect of warm high pressure filter loss.And by embedded, the half embedded closure to stratum micropore slit, the mechanism of action such as film covering, change
The caving-preventing ability of kind drilling fluid system.
Specific embodiment
Embodiment 1：According to component proportion, each raw material is got the raw materials ready：Rosin acid 10%；Glycerine 8%；Sulfonated gilsonite
30%；Cationic starch 10%；Diverting agent 10%；High-temperature stabilizer 12%；Oxygen scavenger 0.5%；Wherein, cationic starch is by forming sediment
Powder tertiary amino alkyl ether and quaternary ammonium starch ethers are according to 1:1.5 compositions, high-temperature stabilizer is by sulfonated phenol formaldehyde resin and sulfonated lignite tree
Fat is according to 1:1 composition, diverting agent is by tert-Butyl Phenolic Curing Resin, Octylphenolic Curing Resin, calcium carbonate according to 8:10:5 compositions,
Oxygen scavenger is sodium sulfite.Add glycerine in rosin acid, and after stirring 2h under the conditions of 170 DEG C, esterification occurs；Again
Add sulfonated gilsonite, cationic starch, diverting agent, high-temperature stabilizer, oxygen scavenger, be stirred mixing under the conditions of 120 DEG C, 3h
Afterwards, prepared drilling fluid high temperature resistance fluid loss agent.
Embodiment 2：According to component proportion, each raw material is got the raw materials ready：Rosin acid 15%；Glycerine 12%；Sulfonated gilsonite
40%；Cationic starch 12%；Diverting agent 20%；High-temperature stabilizer 14%；Oxygen scavenger 1.0%；Wherein, cationic starch is by forming sediment
Powder tertiary amino alkyl ether and quaternary ammonium starch ethers are according to 1:1.5 compositions, high-temperature stabilizer is by sulfonated phenol formaldehyde resin and sulfonated lignite tree
Fat is according to 1:1 composition, diverting agent is by tert-Butyl Phenolic Curing Resin, Octylphenolic Curing Resin, calcium carbonate according to 8:10:5 compositions,
Oxygen scavenger is sodium sulfite.Add glycerine in rosin acid, and after stirring 2h under the conditions of 190 DEG C, esterification occurs；Again
Add sulfonated gilsonite, cationic starch, diverting agent, high-temperature stabilizer, oxygen scavenger, be stirred mixing under the conditions of 120 DEG C, 4h
Afterwards, prepared drilling fluid high temperature resistance fluid loss agent.
Embodiment 3：According to component proportion, each raw material is got the raw materials ready：Rosin acid 12%；Glycerine 10%；Sulfonated gilsonite
35%；Cationic starch 10%；Diverting agent 15%；High-temperature stabilizer 13%；Oxygen scavenger 0.8%；Wherein, cationic starch is by forming sediment
Powder tertiary amino alkyl ether and quaternary ammonium starch ethers are according to 1:1.5 compositions, high-temperature stabilizer is by sulfonated phenol formaldehyde resin and sulfonated lignite tree
Fat is according to 1:1 composition, diverting agent is by tert-Butyl Phenolic Curing Resin, Octylphenolic Curing Resin, calcium carbonate according to 8:10:5 compositions,
Oxygen scavenger is sodium sulfite.Add glycerine in rosin acid, and after stirring 2h under the conditions of 180 DEG C, esterification occurs；Again
Add sulfonated gilsonite, cationic starch, diverting agent, high-temperature stabilizer, oxygen scavenger, be stirred mixing under the conditions of 120 DEG C, 3h
Afterwards, prepared drilling fluid high temperature resistance fluid loss agent.
Embodiment 4：According to component proportion, each raw material is got the raw materials ready：Rosin acid 14%；Glycerine 11%；Sulfonated gilsonite
38%；Cationic starch 11%；Diverting agent 18%；High-temperature stabilizer 12%；Oxygen scavenger 0.6%；Wherein, cationic starch is by forming sediment
Powder tertiary amino alkyl ether and quaternary ammonium starch ethers are according to 1:1.5 compositions, high-temperature stabilizer is by sulfonated phenol formaldehyde resin and sulfonated lignite tree
Fat is according to 1:1 composition, diverting agent is by tert-Butyl Phenolic Curing Resin, Octylphenolic Curing Resin, calcium carbonate according to 8:10:5 compositions,
Oxygen scavenger is sodium sulfite.Add glycerine in rosin acid, and after stirring 2h under the conditions of 170 DEG C, esterification occurs；Again
Add sulfonated gilsonite, cationic starch, diverting agent, high-temperature stabilizer, oxygen scavenger, be stirred mixing under the conditions of 120 DEG C, 3h
Afterwards, prepared drilling fluid high temperature resistance fluid loss agent.
According to the method described in GB/T 15441-1995, divided using ET-1500-1 bio-toxicity using Luminous bacteria
The acute toxicity EC50 of the JNJS-220 that analyzer testing example obtains, result is as shown in the table：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| 1.44×104mg/L | 1.56×104mg/L | 1.37×104mg/L | 1.47×104mg/L |
Test result shows, the acute toxicity of JNJS-220 is extremely low.
The JNJS-220 adding embodiment to obtain in base slurry, tests its performance change, especially contrasts HTHP leak-off
Amount.Successively in 300ml distilled water add 1.47g natrium carbonicum calcinatum, 7.88g sodium bentonite, 13.12g calcium soil after low stir after 1h,
Maintenance 24h is prepared into base slurry.Add 6g JNJS-220 and 65g blanc fixe in base slurry again.Roll old at a temperature of 220 DEG C
After changing 16h, 120h, 240h, the rheological property measuring base slurry and sample-adding slurry at normal temperatures is (apparent viscosity AV, plastic viscosity PV, dynamic
Shear force PV and ratio of dynamic shear force/yield value to plastic viscosity YP/PV), middle press filtration vector API, high temperature and high pre ssure filtration HTHP.As shown in the table.
Under equal aging condition, sample-adding slurry significantly reduces than the HTHP filter loss of base slurry, rheological property no significant change；Prolong
Long ageing time, the filter loss of sample-adding slurry significantly reduces, and can increase with ageing time and play more preferable filtrate reducing effect.
Prepare 25%NaCl undersaturation brine mud, add 2% JNJS-220 that sample-adding slurry is obtained to it, evaluate filtrate reducing
Property.After rolling aging 16h at a temperature of 220 DEG C, the rheological property of test undersaturation brine mud and sample-adding slurry under normal temperature.
From experiment, less, HTHP filter loss significantly declines for sample-adding slurry viscosity change.Illustrate that JNJS-220 can resist
25%NaCl.
Prepare high density 20%KCL sulfonation undersaturation brine mud, add 2% JNJS-220 that sample-adding slurry is obtained to it,
Evaluate filtration reduction.After experiment slurry is rolled aging 16h at a temperature of 220 DEG C, test undersaturation brine mud under normal temperature and add
The rheological property of sample slurry.
From experiment, in sample-adding slurry viscosity change less, HTHP filter loss declines substantially.Illustrate that JNJS-220 can resist
20%KCl.
The JNJS-220 adding 2% in high density saturated brine sulphonated polymer mud is obtained sample-adding slurry, evaluates filtration reduction.
After experiment slurry is rolled aging 16h at a temperature of 220 DEG C, the rheological characteristic of test undersaturation brine mud and sample-adding slurry under normal temperature
Energy.
Description of test：In the well slurry of high density saturated brine sulphonated polymer mud scene, JNJS-220 filtrate reducing effect is obvious,
And the rheological property impact on well slurry is relatively small.
Claims (6)
1. a kind of drilling fluid high temperature resistance fluid loss agent is it is characterised in that be made up of according to quality and 100% following components raw material：
Rosin acid 10 ~ 15%；
Glycerine 8 ~ 12%；
Sulfonated gilsonite 30 ~ 40%；
Cationic starch 10 ~ 12%；
Diverting agent 10 ~ 20%；
High-temperature stabilizer 12 ~ 14%；
Oxygen scavenger 0.5 ~ 1.0%；
Wherein, cationic starch is made up of starch tertiary amino alkyl ether and quaternary ammonium starch ethers, and high-temperature stabilizer is by sulfonated phenolic tree
Fat and sulfonated lignite resin are constituted, and diverting agent is made up of tert-Butyl Phenolic Curing Resin, Octylphenolic Curing Resin, calcium carbonate.
2. drilling fluid according to claim 1 with high temperature resistance fluid loss agent it is characterised in that in described cationic starch
Starch tertiary amino alkyl ether and quaternary ammonium starch ethers ratio are 1:1.5.
3. drilling fluid according to claim 1 with high temperature resistance fluid loss agent it is characterised in that in described high-temperature stabilizer
Sulfonated phenol formaldehyde resin and sulfonated lignite resin ratio are 1:1.
4. drilling fluid according to claim 1 with high temperature resistance fluid loss agent it is characterised in that tertiary fourth in described diverting agent
Phenolic curing resins, Octylphenolic Curing Resin, calcium carbonate proportion are 8:10:5.
5. drilling fluid high temperature resistance fluid loss agent according to claim 1 is it is characterised in that described oxygen scavenger is sulfurous acid
Sodium.
6. drilling fluid according to claim 1 with the preparation method of high temperature resistance fluid loss agent it is characterised in that including following
Step：
Step a：According to component proportion, each raw material is got the raw materials ready；
Step b：Add glycerine in rosin acid, and after stirring 2h under the conditions of 170-190 DEG C, esterification occurs；
Step c：Add sulfonated gilsonite, cationic starch, diverting agent, high-temperature stabilizer, oxygen scavenger, enter under the conditions of 120 DEG C
Row stirring mixing, after 3 ~ 4h, prepared drilling fluid high temperature resistance fluid loss agent.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112552888A (en) * | 2020-12-16 | 2021-03-26 | 成都西油华巍科技有限公司 | Preparation method of temperature-resistant salt-resistant gel temporary plugging isolation fluid for completion fluid |
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| EP0821047A2 (en) * | 1996-07-23 | 1998-01-28 | Halliburton Energy Services, Inc. | A method for controlling fluid loss in permeable formations |
| CN1690161A (en) * | 2004-04-29 | 2005-11-02 | 中国石油化工股份有限公司 | Follow-drilling plugging agent and its preparation method and use |
| CN101348711A (en) * | 2008-07-01 | 2009-01-21 | 中国海洋石油总公司 | Drill-feeding plugging agent and preparation thereof |
| CN105176501A (en) * | 2015-09-22 | 2015-12-23 | 西南石油大学 | Blocking agent for drilling fluid and preparation method thereof |
-
2016
- 2016-08-31 CN CN201610786649.XA patent/CN106398661B/en active Active
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| CN112552888A (en) * | 2020-12-16 | 2021-03-26 | 成都西油华巍科技有限公司 | Preparation method of temperature-resistant salt-resistant gel temporary plugging isolation fluid for completion fluid |
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| Publication number | Publication date |
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| CN106398661B (en) | 2018-10-19 |
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