CN106634876A - Plugging agent containing nano-particles and preparation method of plugging agent - Google Patents
Plugging agent containing nano-particles and preparation method of plugging agent Download PDFInfo
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- CN106634876A CN106634876A CN201510717179.7A CN201510717179A CN106634876A CN 106634876 A CN106634876 A CN 106634876A CN 201510717179 A CN201510717179 A CN 201510717179A CN 106634876 A CN106634876 A CN 106634876A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/10—Nanoparticle-containing well treatment fluids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/28—Friction or drag reducing additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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Abstract
The invention provides a plugging agent containing nano-particles and a preparation method. The plugging agent containing the nano-particles comprises, by weight, 80-90 parts of nano-emulsion, 8-14 parts of nano-materials and 2-6 parts of system stabilizers. The preparation method includes the steps: adding the nano-particles into the nano-emulsion at the temperature ranging from 20 DEG C to 40 DEG C; stirring the nano-particles at a high speed for 20-30 minutes by a magnetic stirrer; gradually adding the system stabilizers under low-speed stirring; stirring the materials at a high speed for 20-30 minutes to obtain the plugging agent. Other nano-particles are further added based on the nano-emulsion, the plugging capacity of the nano-emulsion is improved, pores and micro-cracks are plugged, a formed filter cake is compact, the quality of the filter cake can be improved, filter loss of drilling fluid is reduced, stability of the wall of a well is improved, the lubricating property of the drilling fluid can be improved, and penetration rate is increased.
Description
Technical field
The present invention relates to oil drilling chemical material technical field, more particularly to a kind of drilling fluid nanometer sealing agent.
Background technology
During oil gas drilling, Wellbore Stability is common problem.Borehole well instability easily causes the down hole problems such as hole collapse, undergauge, leakage, bit freezing and reservoir pollution and accident, can not only delay drilling period, increases drilling cost, can also affect follow-up oil producing operation.It is also possible to scrap part well or even scraps whole well when serious.According to estimates, the whole world has had a strong impact on the economic benefit of oil field development every year because the direct economic loss that borehole well instability is caused reaches multi-billion dollar.Therefore, wellbore stability is kept to be significant during oil gas drilling, both at home and abroad many research institutions are all being devoted to this research.
The factor for causing borehole well instability is summed up and can be divided into three major types, including geologic(al) factor, Drilling Fluid factor and drilling technology factor.Geologic(al) factor is to be difficult to change, and can only exactly predict as far as possible or determine, is that Drilling Fluid and drilling technology provide guidance.The head of liquid of drilling fluid itself is the main factor of stabilizing borehole in drilling process, next to that the mud cake that wellbore liquid leaching loss back wall is formed around the borehole wall.The characteristic for changing drilling fluid is one of Main Means of current wellbore stability.
At present, Chinese scholars have done substantial amounts of work in the research of drilling fluid sealing agent.Such as Zhang Fan exists《A kind of synthesis of oil base expansion plugging agent and its performance evaluation》It is middle to have synthesized a kind of expansion plugging agent for oil base drilling fluid（See《Changjiang University's journal (natural science edition)》, 2010,7（3））, base stock is styrene, oil absorption monomer, crosslinking agent, initiator, polyvinyl alcohol and calcium carbonate.Hu Wenjun etc. exists《Application of the strong closure oil base drilling fluid system in W11-4D oil fields》In propose a kind of oil base drilling fluid with strong shut-off capacity, using emulsified asphalt, resin, calcium carbonate superfine powder effect sealing agent（See《Drilling and completion fluids》, 2007,24（3））.A kind of high inhibition that discloses of Chinese patent CN102863947A blocks by force drilling fluid, and strong sealing agent is one or more compositions in cation modified asphalt, sulfonated gilsonite, bitumen powder, cationic emulsified bitumen, colloidal pitch, latex, emulsified wax.Chinese patent CN103013469A discloses a kind of method that use nano silicon improves water-base drilling fluid performance under different temperatures, the invention provides a kind of method that use nano silicon improves water-base drilling fluid performance under different temperatures, nano silicon dioxide dispersion is added in base slurry, make base starch to form more thin and compact mud cake, improve filtrate reducing effect.But the shortcoming or deficiency of these technologies are：The filter cake of formation is not fine and close enough, and the micropore and microcrack shut-off capacity to rock not enough, causes when longer mud shale well section is crept into, and water still has intrusion to a certain extent to mud shale, so as to increased the risk of mud shale cave-in.
The content of the invention
The purpose of the present invention is to overcome the shortcomings of above-mentioned technology, a kind of sealing agent containing nano-particle is provided, the sealing agent adds other nano-particles on the basis of nanoemulsions, further, improve the shut-off capacity of nanoemulsions, hole and microcrack are blocked, the filter cake of formation is relatively compact, filter cake quality can be improved, reduce the filter loss of drilling fluid, the stability of the borehole wall is improved, while the greasy property of drilling fluid can be improved, rate of penetration is improved.
In order to reach the purpose of the present invention, the invention provides technical scheme below：
Present invention firstly provides a kind of sealing agent containing nano-particle, the sealing agent is in terms of 100 weight portions including following components：
The weight portion of nanoemulsions 80 ~ 90；
The weight portion of nano material 8 ~ 14；
The weight portion of system stabilizers 2 ~ 6.
The nanoemulsions are nanometer paraffin wax emulsions.
The nano material is nano silicon, nano titanium oxide, the composition of nano-graphite.
The system stabilizers are one or more in Span20, Span80, Tween20, Tween80, Sodium Polyacrylate, neopelex, polyethylene glycol.
In technical solution of the present invention, the preparation method of described nano material includes：
First nano silicon, nano titanium oxide, nano-graphite are measured into by weight ratio（6~8）：（1~2）：（3~5）Mixed, it is standby.Then weight is compared into 1:1 stearic acid and NaOH are placed in container, add water, and heating stirring, after stearic acid and NaOH all dissolving, add mixture of nanoparticles.Constant temperature stirs 30min ~ 120min, and suction filtration washes away the organic matter on surface, is washed with water and washs with absolute ethyl alcohol, is dried, that is, obtain described nano material.
In technical solution of the present invention, the preparation method of the described sealing agent containing nano-particle includes：
At 20 DEG C ~ 40 DEG C, nano material is added in nanoemulsions, using magnetic stirring apparatus 20 min of high-speed stirred ~ 30min, system stabilizers, then 20 min of high-speed stirred ~ 30min are then gradually added under stirring at low speed, that is, obtain the sealing agent.
The invention has the advantages that：
The present invention adds nano material to further increase nanoemulsions shut-off capacity in nanoemulsions.Contained nano-particle can be entered among micro-pore and the crack on stratum in nanoemulsions, the stability of the borehole wall is improved, meanwhile, the drilling fluid filter cake compactness of formation is strong, slow down the trend that drilling fluid expands, falls block to after the infiltration and stratum water suction on stratum, further improve borehole wall stability.And, nano-particle also has certain lubricant effect, can be effectively reduced frictional resistance, improves rate of penetration.
Specific embodiment
With reference to embodiments the present invention is described in detail, but the scope of the present invention is not limited to following examples.
Embodiment 1
Sealing agent used in the present embodiment includes following components with 100 weight portions：
The weight portion of nanoemulsions 90；
The weight portion of nano material 8；
The weight portion of system stabilizers 2.
The present embodiment is included using the preparation method of described nano material：
First by nano silicon, nano titanium oxide, nano-graphite by weight 6:1:3 are mixed, standby.Then weight is compared into 1:1 stearic acid and NaOH are placed in container, add water, and in 40 DEG C, 8000r/min heating stirrings, after stearic acid and NaOH all dissolving, are added to mixture of nanoparticles（It is 8 ~ 15 with stearic weight ratio:1）.25 DEG C, constant temperature stirring 30min ~ 120min under 5000r/min, suction filtration washes away the organic matter on surface, is washed with water and washs once, is dried with absolute ethyl alcohol, that is, obtain described nano material.
The preparation method of the described sealing agent containing nano-particle of the use of the present embodiment includes：
At 25 DEG C, nano material is added in nanoemulsions, using the min of magnetic stirring apparatus 8000r/min high-speed stirreds 20, system stabilizers Span80 is then gradually added under 500r/min stirring at low speed, then with 8000r/min high-speed stirreds 20
Min, that is, obtain the sealing agent.
Embodiment 2
Sealing agent used in the present embodiment includes following components with 100 weight portions：
The weight portion of nanoemulsions 80；
The weight portion of nano material 14；
The weight portion of system stabilizers 6.
The present embodiment is included using the preparation method of described nano material：
First by nano silicon, nano titanium oxide, nano-graphite by weight 8:2:5 are mixed, standby.Then weight is compared into 1:1 stearic acid and NaOH are placed in container, add water, and in 40 DEG C, 8000r/min heating stirrings, after stearic acid and NaOH all dissolving, add mixture of nanoparticles（It is 8 ~ 15 with stearic weight ratio:1）.25 DEG C, constant temperature stirs 30 ~ 120min under 5000r/min, suction filtration washes away the organic matter on surface, is washed with water and washs once with absolute ethyl alcohol, is dried, that is, obtain described nano material.
The preparation method of the described sealing agent containing nano-particle of the use of the present embodiment includes：
At 35 DEG C, nano material is added in nanoemulsions, using the min of magnetic stirring apparatus 8000r/min high-speed stirreds 30, system stabilizers Tween20 is then gradually added under 500r/min stirring at low speed, then with 8000r/min high-speed stirreds 30
Min, that is, obtain the sealing agent.
Embodiment 3
Sealing agent used in the present embodiment includes following components with 100 weight portions：
The weight portion of nanoemulsions 85；
The weight portion of nano material 12；
System stabilizers
3 weight portions.
The present embodiment is included using the preparation method of described nano material：
First by nano silicon, nano titanium oxide, nano-graphite by weight 6:1:4 are mixed, standby.Then weight is compared into 1:1 stearic acid and NaOH are placed in container, add water, and in 40 DEG C, 8000r/min heating stirrings, after stearic acid and NaOH all dissolving, add mixture of nanoparticles（It is 8 ~ 15 with stearic weight ratio:1）.25 DEG C, constant temperature stirs 30 ~ 120min under 5000r/min, suction filtration washes away the organic matter on surface, is washed with water and washs once with absolute ethyl alcohol, is dried, that is, obtain described nano material.
The preparation method of the described sealing agent containing nano-particle of the use of the present embodiment includes：
At 30 DEG C, nano material is added in nanoemulsions, using the min of magnetic stirring apparatus 8000r/min high-speed stirreds 25, system stabilizers neopelex is then gradually added under 500r/min stirring at low speed, again the min of 8000r/min high-speed stirreds 25, that is, obtain the sealing agent.
Claims (4)
1. a kind of sealing agent containing nano-particle, it is characterised in that comprising following components：
The weight portion of nanoemulsions 80 ~ 90；
The weight portion of nano material 8 ~ 14；
The weight portion of system stabilizers 2 ~ 6.
2. the sealing agent containing nano-particle according to claim 1, it is characterised in that：The nanoemulsions are nanometer paraffin wax emulsions；The nano material is nano silicon, nano titanium oxide, the mixture of nano-graphite；The system stabilizers are one or more in Span20, Span80, Tween20, Tween80, Sodium Polyacrylate, neopelex, polyethylene glycol.
3. the sealing agent containing nano-particle according to claim 2, it is characterised in that the preparation method of described nano material includes：
Nano silicon, nano titanium oxide, nano-graphite are measured by weight than 6 ~ 8 first：1~2：3 ~ 5 carry out mixing to obtain mixture of nanoparticles；Then weight is compared into 1:1 stearic acid and NaOH are placed in container, add water, and heating stirring, after stearic acid and NaOH all dissolving, are added to mixture of nanoparticles；Suction filtration after constant temperature stirring 30min ~ 120min, with absolute ethyl alcohol the organic matter on surface is washed away, and is washed with water and is washed, is dried, that is, obtain described nano material.
4. according to the preparation method of the sealing agent containing nano-particle described in aforementioned any claim, it is characterised in that：At 20 DEG C ~ 40 DEG C, nano material is added in nanoemulsions, using magnetic stirring apparatus 20 min of high-speed stirred ~ 30min, system stabilizers, then 20 min of high-speed stirred ~ 30min are then gradually added under stirring at low speed, that is, obtain the sealing agent.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300433A (en) * | 2018-03-01 | 2018-07-20 | 陕西延长石油(集团)有限责任公司研究院 | A kind of drilling shale horizontal well nano combined sealing agent and preparation method thereof |
| CN109810678A (en) * | 2017-11-20 | 2019-05-28 | 中石化石油工程技术服务有限公司 | Mud shale stratum sealing agent and preparation method of the drilling fluid based on nanofiber composite |
| CN110903818A (en) * | 2019-11-26 | 2020-03-24 | 山东科兴化工有限责任公司 | Preparation method of pure natural sub-graphite multilayer nano-scale pore ball temporary plugging agent applied to oil-gas well fracturing |
| CN110982495A (en) * | 2019-12-19 | 2020-04-10 | 西南石油大学 | Modified nano-silica plugging agent, water-based drilling fluid, and preparation methods and applications thereof |
| CN111094504A (en) * | 2017-09-11 | 2020-05-01 | 沙特阿拉伯石油公司 | Lost circulation material compositions with acidic nanoparticle-based dispersions and polyamines |
| CN111087984A (en) * | 2019-12-03 | 2020-05-01 | 西南石油大学 | Nano plugging water-based drilling fluid and preparation method and application thereof |
| CN112239659A (en) * | 2019-07-18 | 2021-01-19 | 中石化石油工程技术服务有限公司 | Modified enteromorpha-based composite filtrate reducer for drilling fluid and preparation method thereof |
| CN114806533A (en) * | 2022-05-31 | 2022-07-29 | 中国石油大学(华东) | Preparation method of amphiphilic Janus graphene oxide oil-displacement nano fluid |
| CN115433556A (en) * | 2022-09-14 | 2022-12-06 | 大庆汇联技术开发有限公司 | Preparation method of diversion fracturing temporary plugging agent in low-permeability oilfield joints |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111094504A (en) * | 2017-09-11 | 2020-05-01 | 沙特阿拉伯石油公司 | Lost circulation material compositions with acidic nanoparticle-based dispersions and polyamines |
| CN109810678A (en) * | 2017-11-20 | 2019-05-28 | 中石化石油工程技术服务有限公司 | Mud shale stratum sealing agent and preparation method of the drilling fluid based on nanofiber composite |
| CN108300433A (en) * | 2018-03-01 | 2018-07-20 | 陕西延长石油(集团)有限责任公司研究院 | A kind of drilling shale horizontal well nano combined sealing agent and preparation method thereof |
| CN112239659A (en) * | 2019-07-18 | 2021-01-19 | 中石化石油工程技术服务有限公司 | Modified enteromorpha-based composite filtrate reducer for drilling fluid and preparation method thereof |
| CN112239659B (en) * | 2019-07-18 | 2022-07-12 | 中石化石油工程技术服务有限公司 | Modified enteromorpha-based composite filtrate reducer for drilling fluid and preparation method thereof |
| CN110903818A (en) * | 2019-11-26 | 2020-03-24 | 山东科兴化工有限责任公司 | Preparation method of pure natural sub-graphite multilayer nano-scale pore ball temporary plugging agent applied to oil-gas well fracturing |
| CN111087984A (en) * | 2019-12-03 | 2020-05-01 | 西南石油大学 | Nano plugging water-based drilling fluid and preparation method and application thereof |
| CN111087984B (en) * | 2019-12-03 | 2022-05-06 | 西南石油大学 | Nano plugging water-based drilling fluid and preparation method and application thereof |
| CN110982495A (en) * | 2019-12-19 | 2020-04-10 | 西南石油大学 | Modified nano-silica plugging agent, water-based drilling fluid, and preparation methods and applications thereof |
| CN114806533A (en) * | 2022-05-31 | 2022-07-29 | 中国石油大学(华东) | Preparation method of amphiphilic Janus graphene oxide oil-displacement nano fluid |
| CN115433556A (en) * | 2022-09-14 | 2022-12-06 | 大庆汇联技术开发有限公司 | Preparation method of diversion fracturing temporary plugging agent in low-permeability oilfield joints |
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