CN104232035B - A kind of drilling fluid and preparation method suitable for low permeability reservoirs - Google Patents
A kind of drilling fluid and preparation method suitable for low permeability reservoirs Download PDFInfo
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- CN104232035B CN104232035B CN201310373962.7A CN201310373962A CN104232035B CN 104232035 B CN104232035 B CN 104232035B CN 201310373962 A CN201310373962 A CN 201310373962A CN 104232035 B CN104232035 B CN 104232035B
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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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
Abstract
The present invention relates to Oil-Gas Well Engineering technical field, and in particular to a kind of drilling fluid and preparation method suitable for low permeability reservoirs.Drilling fluid constituent and its parts by weight are as follows：Water：1000th, drilling fluid bentonite：20 60, sodium carbonate：0.4 3, tackifier：2 15, amine inhibitor：5 20, fluid loss additive：20 50, anti-sloughing agent is blocked：20 50, polymer oil layer protective agent：20 40, Waterproof lock agent：3‑10.Drilling fluid provided by the present invention has good seal-off effect for low permeability reservoir; and filtrate surface tension force is low; filtrate is effectively reduced to the water blocking damage of reservoir permeability, makes rock surface property to being conducive to crude oil flow, being conducive to the direction of reservoir protec-tion to change, reach reservoir protec-tion purpose.
Description
Technical field
The present invention relates to Oil-Gas Well Engineering technical field, and in particular to a kind of drilling fluid and system suitable for low permeability reservoirs
Preparation Method.
Background technology
Shengli Oil Field has abundant Low permeable oil and gas reservoirs resource, is mainly distributed on Bo Nan, stake west, Shanghe, Niu Zhuan, history
The areas such as south, purifying, great Wang Bei, Shao Jia, great Lu lake, No. five stakes, distributed areas are wide, geological condition is complicated, exploration and development difficulty
Greatly.Compared with domestic similar oil-gas reservoir, Shengli Oil Field Low permeable oil and gas reservoirs have reserves big, and oil reservoir buries relatively deep, poor properties, storage
Layer diagenesis and compaction is strong, anisotropism is serious, the low feature of recovery percent of reserves.Easily because outside fluid is invaded during drilling
Enter reservoir and produce the various pollution damages such as water-sensitive, water lock, with the continuity of drilling time, any drilling fluid is all inevitably
There is filtrate invaded formation, for low permeability reservoir, even if minimal amount of filtrate invaded formation, can also increase interpore capillary
Guan Li, reduces the permeability of oil reservoir, changes reservoir initial parameter, and certain influence, and reservoir are caused on follow-up reservoir reconstruction
Once suffering damage, it is difficult to recover, therefore to the oil layer protection work of such oil reservoir, especially seem important.
The content of the invention
It is an object of the present invention to overcome the deficiencies in the prior art, there is provided a kind of drilling well suitable for low permeability reservoirs
Liquid and preparation method, drilling fluid provided by the present invention are protected by being separately added into polymer oil layer in the drilling fluid of reservoir top
Agent and the Waterproof lock agent containing fluorocarbon surfactant component etc., realization top drilling fluid is transform as to low permeability reservoir have it is good
" Synergistic " drilling fluid system of good protecting effect.
In order to solve the above technical problems, the technical scheme is that：A kind of drilling fluid suitable for low permeability reservoirs, group
It is as follows into composition and its parts by weight：Water：1000th, drilling fluid bentonite：20-60, sodium carbonate：0.4-3, tackifier：2-15、
Amine inhibitor：5-20, fluid loss additive：20-50, closure anti-sloughing agent：20-50, polymer oil layer protective agent：20-40, Waterproof lock
Agent：3-10.Described water is fresh water.
Tackifier of the present invention are polyacrylamide PAM, polyacrylamide sylvite（KPAM）, PAMC
CPAM, PAMA（HPAM）, XC biopolymers, one or more in co-polymer of sulfonate.
Amine inhibitor of the present invention is one or more in organic amine, polyamine, amido polyalcohols.
Fluid loss additive of the present invention is humic acid potassium, sodium humate, humic acid carboxymethylated product, humic acid sulfonation product
Thing, humic acid nitration product, sulfonated lignite resin, hyper-branched phenolic resin, sulfonated-pheno-formoldehyde resin, lignosulfonate sulphur methyl
One or more in phenolic resin condensation thing, hydroxypropul starch, CMS, anti-temperature starch DFD-140.
Closure anti-sloughing agent of the present invention is oxidized asphalt, emulsified asphalt, sulfonated gilsonite, bitumen, modified pitch, breast
One or more in fossil waxes, nanoemulsions, polymeric alcohol.
Polymer oil layer protective agent of the present invention is the oil layer protective agent of independent research.Apply for national patent protection,
National inventing patent application number：201110449988.6, patent name：A kind of polymer for drilling fluid oil layer protective agent and preparation
Method.
Waterproof lock agent of the present invention be commercially available fluorocarbon surfactant with conventional surfactants compound product in
One or more, such as the SATRO Waterproof lock agent of Hubei Province Jing Zhou Jia Hua Co., Ltds production.Such inorganic agent both utilizes fluorine carbon table
The property of the strong hydrophobic and oil repellent of face activating agent and stronger surface-active, overcomes the expensive defect of fluorocarbon surfactant again.Fluorine
After carbon surface active agent is compounded with conventional surfactants, its surface-active is prepared often beyond the surface-active of one-component
Waterproof lock agent generally there is extremely low surface tension, can to the full extent reduce drilling fluid filtrate, reduce low permeability reservoir water lock
The generation of infringement.
A kind of drilling well liquid and preparation method thereof suitable for low permeability reservoirs, comprises the following steps：
A. base slurry is prepared：It is the brill of 20-60 for the sodium carbonate and weight of 0.4-3 that weight is added in the water that weight is 1000
Well liquid bentonite, stirs 20-60min, prehydration 22-26h；
B. tackifier are added：It is the tackifier of 2-15, stirring that weight is added in the mixed liquor obtained by step a；
C. amine inhibitor is added：It is 5-20 amine inhibitor, stirring that weight is added in the mixed liquor obtained by step b；
D. fluid loss additive is added：It is the fluid loss additive of 20-50, stirring to add weight in the step c in the drilling fluid of gained；
E. closure anti-sloughing agent is added：It is the closure anti-sloughing agent of 20-50 to add weight in the step d in the drilling fluid of gained,
Stirring；
F. polymer oil layer protective agent is added：It is the oil layer protection of 20-40 to add weight in gained drilling fluid in step e
Agent, stirring；
G. Waterproof lock agent is added：It is the Waterproof lock agent of 3-10, stirring that weight is added in gained drilling fluid in step f.
Mixing time described in b, c, d, e, f, g step of the preparation method is 15-25 min, wherein with 18-22
Min is more excellent scheme.
The beneficial effects of the invention are as follows：Drilling fluid provided by the present invention is separately added into by the drilling fluid of reservoir top
Polymer oil layer protective agent and the Waterproof lock agent containing fluorocarbon surfactant component etc., it is right that transform as top drilling fluid by realization
Low permeability reservoir has " Synergistic " drilling fluid system of good protection effect.During use is cooperateed with, first with polymerization
The softening of thing oil layer protective agent, deformation, suction-operated, form one layer of temporarily stifled barrier that toughness is strong, permeability is extremely low on the borehole wall,
Later stage drilling fluid is prevented to enter oil-gas Layer to greatest extent.With the continuity of drilling time, any drilling fluid is all inevitably
There is filtrate invaded formation.For low permeability reservoir, even if minimal amount of filtrate invaded formation, can also increase interpore capillary
Guan Li, reduces the permeability of oil reservoir, changes reservoir initial parameter, certain influence is caused on follow-up reservoir reconstruction, therefore boring
The Waterproof lock agent containing fluorocarbon surfactant component is added in well liquid, using such inorganic agent have certain hydrophobic and oil repellent and compared with
The property of strong surface-active, farthest reduces the surface tension of filtrate, reduces filtrate and locks wound to the water of reservoir permeability
Evil, makes rock surface property to being conducive to crude oil flow, being conducive to the direction of reservoir protec-tion to change, and reaches reservoir protec-tion mesh
's.
The surface tension of drilling fluid filtrate is low, can reduce the generation of Water-blocking damage.Low permeability reservoirs " Synergistic " drilling well
Liquid system can organically combine polymer oil layer protective agent, Waterproof lock agent and other inorganic agents, meet " Synergistic " theory
Technical essential, system is more than 90% to the sealing ratiod of core；Held when one section of very short temporary blocking up is cut（3mm~3.5mm）Afterwards, permeate
Rate recovery value is more than 94%, has preferable oil layer protection effect to low permeability reservoir.
Specific embodiment
Embodiment 1
1000mL fresh water is added in height stirs cup, mixer is opened, adds 20g sodium swollen while stirring under 4000r/min
Profit soil, 0.4g calcium carbonate, 5g polyacrylamides（PAM）, 10g organic amines, 20g sulfonated-pheno-formoldehyde resins（SMP-Ⅱ）, 20g sulfonation
Walchowite（SPNH）, 30g modified pitch（HQ-1）, 30g polymer oil layer protective agents, 3g Waterproof lock agent SATRO（Purchased from Jing Zhou
Jia Hua Science and Technology Ltd.s）.
Embodiment 2
1000mL fresh water is added in height stirs cup, mixer is opened, adds 40g sodium swollen while stirring under 4000r/min
Profit soil, 2g calcium carbonate, 2g co-polymer of sulfonate（DLP）, 15g amidos polyalcohols, the hyper-branched phenolic resin of 20g（SPC-Ⅱ）, 30g sulphurs
Change walchowite（SPNH）, 50g emulsified asphalts, 30g polymer oil layer protective agents, 5g Waterproof lock agent SATRO（Purchased from the good China in Jing Zhou
Science and Technology Ltd.）.
Embodiment 3
1000mL fresh water is added in height stirs cup, mixer is opened, adds 60g sodium swollen while stirring under 4000r/min
Profit soil, 3g calcium carbonate, 3g XC biopolymers, 20g polyamine, the hyper-branched phenolic resin of 30g（SPC-Ⅱ）, 20g sulfonated lignite trees
Fat（SPNH）, 30g sulfonated gilsonites, 20g polymeric alcohols, 40g polymer oil layer protective agents, 10g Waterproof lock agent SATRO（Purchased from Jing Zhou
Jia Hua Science and Technology Ltd.s）.
The effect in embodiment is illustrated below.
1. the key property and surface tension of system
The rheological characteristic and interfacial tension of the embodiment of table 1
As can be seen from Table 1, embodiment has relatively low surface tension, is conducive to preventing the generation of Water-blocking damage.
2. oil layer protection effect assessment
Pollution experiment is carried out using the artificial cores of different pore size permeability, hyposmosis is determined using rock core-flowage experiment instrument
The sealing ratiod and permeability of core before and after oil-gas reservoir " Synergistic " drilling fluid contamination.Experimental result is shown in Table 2.
Table 2 under the conditions of different rock sample permeabilities, the oil layer protection effect of system
As known from Table 2, embodiment is more than 90% to the sealing ratiod of core；Held when one section of very short temporary blocking up is cut（3mm~
3.5mm）Afterwards, permeability resume figure is more than 94%, and drilling fluid system can be temporarily stifled in distance under illustrating the synergy by inorganic agent
Shading ring is established in the very short distance in end, prevents filtrate and solid phase particles from entering the deep of rock sample.To low permeability reservoir have compared with
Good oil layer protection effect.
3. outer filter cake returns row's plugging removal effect
The outer filter cake of Low permeable oil and gas reservoirs " Synergistic " drilling fluid system, can be with after temporarily stifled shielding is formed to oil-gas Layer
Shielding is gradually released by the impact of later stage crude oil production and dissolution temporarily stifled.Experimental evaluation has been carried out for this.The results are shown in Table
3。
Table 3 returns influence of the row pressure difference to permeability resume figure
Knowable to the data of table 3, when row pressure power is returned when close to 0.2MPa, permeability resume figure >=92% of embodiment shows
In actual production process, with the extraction of crude oil, the reservoir solid phase caused by AMP oil layer protective agents is blocked and made by filtrate
Into water lock, can gradually be excluded.
Claims (2)
1. a kind of drilling fluid suitable for low permeability reservoirs, it is characterised in that：Constituent and its parts by weight are as follows：Water：
1000th, drilling fluid bentonite：20th, sodium carbonate：0.4-3, tackifier：2-15, amine inhibitor：5-20, fluid loss additive：20-
50th, anti-sloughing agent is blocked：20-50, polymer oil layer protective agent：20-40, Waterproof lock agent：3-10；
The tackifier be polyacrylamide, polyacrylamide sylvite, PAMC, PAMA,
One or more in XC biopolymers, co-polymer of sulfonate；
The amine inhibitor is organic amine；
The fluid loss additive is humic acid potassium, sodium humate, humic acid carboxymethylated product, humic acid sulfonated products, humic acid
Nitration product, sulfonated lignite resin, hyper-branched phenolic resin, sulfonated-pheno-formoldehyde resin, lignosulfonate sulfonated-pheno-formoldehyde resin
One or more in condensation product, hydroxypropul starch, CMS, anti-temperature starch DFD-140；
The closure anti-sloughing agent is oxidized asphalt, emulsified asphalt, sulfonated gilsonite, bitumen, modified pitch HQ-1, emulsification stone
One or more in wax, polymeric alcohol；
The Waterproof lock agent is fluorocarbon surfactant and conventional surfactants compound product；
The drilling fluid for being applied to low permeability reservoirs is made as follows using the constituent：
A. base slurry is prepared：The sodium carbonate that weight is 0.4-3 and the drilling fluid that weight is 20 is added to use in the water that weight is 1000
Bentonite, stirs 20-60min, prehydration 22-26h；
B. tackifier are added：It is the tackifier of 2-15, stirring that weight is added in the mixed liquor obtained by step a；
C. amine inhibitor is added：It is 5-20 amine inhibitor, stirring that weight is added in the mixed liquor obtained by step b；
D. fluid loss additive is added：It is the fluid loss additive of 20-50, stirring to add weight in the step c in the drilling fluid of gained；
E. closure anti-sloughing agent is added：It is the closure anti-sloughing agent of 20-50, stirring to add weight in the step d in the drilling fluid of gained；
F. polymer oil layer protective agent is added：It is the oil layer protective agent of 20-40 to add weight in gained drilling fluid in step e,
Stirring；
G. Waterproof lock agent is added：It is the Waterproof lock agent of 3-10, stirring that weight is added in gained drilling fluid in step f；
Mixing time in described b, c, d, e, f, g step is 15-25 min.
2. a kind of drilling fluid suitable for low permeability reservoirs according to claim 1, it is characterised in that：Described organic amine
It is polyamine and/or amido polyalcohols.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310373962.7A CN104232035B (en) | 2013-06-20 | 2013-08-26 | A kind of drilling fluid and preparation method suitable for low permeability reservoirs |
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| CN2013102460594 | 2013-06-20 | ||
| CN201310246059.4 | 2013-06-20 | ||
| CN201310246059 | 2013-06-20 | ||
| CN201310373962.7A CN104232035B (en) | 2013-06-20 | 2013-08-26 | A kind of drilling fluid and preparation method suitable for low permeability reservoirs |
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| CN104232035B true CN104232035B (en) | 2017-07-11 |
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| CN113136180B (en) * | 2021-05-19 | 2022-09-09 | 四川科宏达集团有限责任公司 | High-temperature-resistant waterproof locking agent for drilling fluid |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962808A (en) * | 2005-11-08 | 2007-05-16 | 四川石油管理局川东钻探公司 | Drilling fluid with strong inhibition capability capable of improving stability shaft wall |
| CN101935519A (en) * | 2010-08-09 | 2011-01-05 | 中联煤层气国家工程研究中心有限责任公司 | Drilling fluid and preparation method thereof |
| CN102234501A (en) * | 2010-04-27 | 2011-11-09 | 长江大学 | Ocean deepwater water-based constant-rheology drilling fluid |
| CN102424746A (en) * | 2011-09-28 | 2012-04-25 | 中国石油化工集团公司 | Strongly inhibitory solid-free polyamine-formate drilling fluid system |
| CN102851011A (en) * | 2011-06-30 | 2013-01-02 | 长江大学 | Polymer drilling fluid with high temperature resistance |
| CN103045182A (en) * | 2012-11-30 | 2013-04-17 | 东营利丰化工新材料有限公司 | Anti-water blocking agent for drilling fluid |
-
2013
- 2013-08-26 CN CN201310373962.7A patent/CN104232035B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962808A (en) * | 2005-11-08 | 2007-05-16 | 四川石油管理局川东钻探公司 | Drilling fluid with strong inhibition capability capable of improving stability shaft wall |
| CN102234501A (en) * | 2010-04-27 | 2011-11-09 | 长江大学 | Ocean deepwater water-based constant-rheology drilling fluid |
| CN101935519A (en) * | 2010-08-09 | 2011-01-05 | 中联煤层气国家工程研究中心有限责任公司 | Drilling fluid and preparation method thereof |
| CN102851011A (en) * | 2011-06-30 | 2013-01-02 | 长江大学 | Polymer drilling fluid with high temperature resistance |
| CN102424746A (en) * | 2011-09-28 | 2012-04-25 | 中国石油化工集团公司 | Strongly inhibitory solid-free polyamine-formate drilling fluid system |
| CN103045182A (en) * | 2012-11-30 | 2013-04-17 | 东营利丰化工新材料有限公司 | Anti-water blocking agent for drilling fluid |
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Effective date of registration: 20230627 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: Drilling fluid technology service center of Sinopec Shengli Petroleum Engineering Co.,Ltd. Address before: 100027 Chaoyangmen North Street, Chaoyang District, Chaoyang District, Beijing Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute |