CN104592967A - Fluid-loss-resistant water-invasion-resistant well control fluid - Google Patents
Fluid-loss-resistant water-invasion-resistant well control fluid Download PDFInfo
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- CN104592967A CN104592967A CN201410834115.0A CN201410834115A CN104592967A CN 104592967 A CN104592967 A CN 104592967A CN 201410834115 A CN201410834115 A CN 201410834115A CN 104592967 A CN104592967 A CN 104592967A
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- well control
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- control fluid
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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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
- C09K2208/30—Viscoelastic surfactants [VES]
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a fluid-loss-resistant water-invasion-resistant well control fluid which is composed of the following components in percentage by mass: 5.0-8.0% of coating agent, 8-12% of potassium chloride, 15-30% of calcium chloride and the balance of water. The well control fluid can resist fluid loss and water invasion, and has the advantage of long well control period.
Description
Technical field
The present invention relates to a kind of anti-leak-off water resistant and invade well control fluid, belong to oil field kill-job technical field.
Background technology
The leakage of well control fluid well finishing liquid, gas cut and the situation such as reservoir sensitivity damage, downhole corrosion is often there is in the operation process such as drilling well, formation testing gas, well workover; thus reservoir protection, wellbore tool protection and job safety are had higher requirement, current conventional Well Killing liquid and in the application main Problems existing are as follows: the kill-job not being suitable for low-pressure low-permeability reservoir.Wherein, Spume Well Killing Liquid system cost is high, complex process, stable period are short, and environmental pollution is large: acid-soluble solid phase temporarily stifled Killing Fluid System go into operation before must pickling, formation damage large; Water miscible suspension salt grain solid phase temporarily stifled system corrodibility is strong, and inorganic salt solution density is comparatively large, more easily misses; Oil soluble is stifled temporarily must be dissolved oil-soluble resin by in-place oil after operation. thus renwing stratum rate of permeation.But this method can only be used for moisture lower oil well. otherwise the dissolving needs of oil-soluble resin are for a long time.In addition, oil-soluble resin intensity is low, also there is matching problem with formation pore.Glue Killing Fluid System viscosity is large, once enter stratum to be difficult to the row of returning, recovers production capacity difficulty.General salt solution or clear water kill-job can not be formed stifled temporarily, and filter loss is large.If snubbing serving, danger is large, needs are introduced or rent uphole equipment, and the inapplicable snubbing serving of some workover treatments.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of anti-leak-off water resistant to invade well control fluid, and main purpose meets long period kill-job requirement.
For achieving the above object, the present invention mainly provides following technical scheme:
On the one hand, embodiments provide a kind of anti-leak-off water resistant and invade well control fluid, be made up of by mass percentage following component:
As preferably, described coating agent is hyper-branched twin chain amphoterics, and structural formula is as follows:
Wherein, R is the straight or branched alkyl of C13-C21, and n is 3-6, p is 2-4.
As preferably, the structural formula of described coating agent is as follows:
As preferably, described coating agent obtains as follows:
The first step, adds longer chain fatty acid and N, N-dimethyl amine carries out amidation condensation reaction, makes catalyzer with potassium hydroxide, stirring and refluxing, reaction 6h ~ 8h, and temperature of reaction is 130 DEG C ~ 160 DEG C, obtains intermediate product tertiary amine;
Second step, in the first step products therefrom, add dichloro alkanes carry out the reaction of contraction chainization, stirring and refluxing, reaction 2h ~ 4h, temperature of reaction is 120 DEG C ~ 130 DEG C, obtains intermediate product contraction chain tertiary amine;
3rd step, obtained intermediate product contraction chain tertiary amine and appropriate Virahol are added in reactor, then gradation adds in advance the sodium chloroacetate solution of becoming reconciled, stirring and refluxing, 4h ~ 6h is reacted at 70 DEG C ~ 80 DEG C, obtain yellow to brown thick liquid, be fracturing liquid surfactant soln.
As preferably, the longer chain fatty acid in the wherein said the first step is sinapinic acid.
Compared with prior art, beneficial effect of the present invention is:
The anti-leak-off water resistant of the embodiment of the present invention invades the kill operation that well control fluid adapts to all kinds of Oil/gas Well.Adopt the coating agent of macromolecular material formulated together with weighting agent.Because in system, free water is in bond, therefore can not enter stratum because of filtrate, simultaneously not by the mistake of inclining of local water, density retention rate is high, can meet long period kill-job requirement.Under the ionization that coating agent in the embodiment of the present invention discharges at weighting agent, form a kind of full-bodied colloid, and there is good visco-elasticity and rheological, stratum leak-off can be reduced, can prevent water enchroachment (invasion) from causing density to decline simultaneously, significantly extend the validity period of well control fluid.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but not as a limitation of the invention.In the following description, the not necessarily same embodiment that different " embodiment " or " embodiment " refers to.In addition, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
Embodiment 1
Anti-leak-off water resistant invades well control fluid, is made up of by mass percentage following component: the coating agent (ADJZ-1) of 5%, the Repone K of 10%, the calcium chloride of 25%, the water of 60%.Wherein coating agent is hyper-branched twin chain amphoterics, and this tensio-active agent obtains as follows:
With in the 250mL tri-neck port grinding bottle of condensing reflux pipe, add sinapinic acid and N, N-dimethyl propylamine, carry out amidation condensation reaction, make catalyzer with potassium hydroxide, stirring and refluxing, reaction 7h, temperature of reaction is 150 DEG C, obtains intermediate product tertiary amine.
In above-mentioned intermediate product tertiary amine, add ethylene dichloride carry out the reaction of contraction chainization, stirring and refluxing, reaction 3h, temperature of reaction is 125 DEG C, obtains intermediate product contraction chain tertiary amine.
Obtained intermediate product contraction chain tertiary amine and appropriate Virahol are added in there-necked flask, gradation adds in advance the sodium chloroacetate solution of becoming reconciled, stirring and refluxing, 5h is reacted at 75 DEG C, obtain yellow to brown thick liquid, wherein the mass percent of effective constituent (hyper-branched twin chain amphoterics) is 50%.The structural formula of effective constituent is:
Select other longer chain fatty acids and N, N-dimethyl propylamine to carry out amidation condensation reaction, finally can obtain the hyper-branched twin chain amphoterics of other structures.
The well control fluid of embodiment is carried out performance test, the results are shown in following table 1.
Table 1
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.
Claims (5)
1. anti-leak-off water resistant invades well control fluid, is made up of by mass percentage following component:
2. anti-leak-off water resistant according to claim 1 invades well control fluid, it is characterized in that, described coating agent is hyper-branched twin chain amphoterics, and structural formula is as follows:
Wherein, R is the straight or branched alkyl of C13-C21, and n is 3-6, p is 2-4.
3. anti-leak-off water resistant according to claim 2 invades well control fluid, and it is characterized in that, the structural formula of described coating agent is as follows:
4. anti-leak-off water resistant according to claim 2 invades well control fluid, and it is characterized in that, described coating agent obtains as follows:
The first step, adds longer chain fatty acid and N, N-dimethyl amine carries out amidation condensation reaction, makes catalyzer with potassium hydroxide, stirring and refluxing, reaction 6h ~ 8h, and temperature of reaction is 130 DEG C ~ 160 DEG C, obtains intermediate product tertiary amine;
Second step, in the first step products therefrom, add dichloro alkanes carry out the reaction of contraction chainization, stirring and refluxing, reaction 2h ~ 4h, temperature of reaction is 120 DEG C ~ 130 DEG C, obtains intermediate product contraction chain tertiary amine;
3rd step, obtained intermediate product contraction chain tertiary amine and appropriate Virahol are added in reactor, then gradation adds in advance the sodium chloroacetate solution of becoming reconciled, stirring and refluxing, 4h ~ 6h is reacted at 70 DEG C ~ 80 DEG C, obtain yellow to brown thick liquid, be fracturing liquid surfactant soln.
5. anti-leak-off water resistant according to claim 4 invades well control fluid, it is characterized in that, the longer chain fatty acid in the wherein said the first step is sinapinic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410834115.0A CN104592967A (en) | 2014-12-29 | 2014-12-29 | Fluid-loss-resistant water-invasion-resistant well control fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410834115.0A CN104592967A (en) | 2014-12-29 | 2014-12-29 | Fluid-loss-resistant water-invasion-resistant well control fluid |
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| CN104592967A true CN104592967A (en) | 2015-05-06 |
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| CN201410834115.0A Pending CN104592967A (en) | 2014-12-29 | 2014-12-29 | Fluid-loss-resistant water-invasion-resistant well control fluid |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479464A (en) * | 2015-08-31 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of temporarily stifled type high temperature well killing fluid being applied to low-permeability oil deposit and preparation method |
| CN106905941A (en) * | 2017-03-21 | 2017-06-30 | 中国石油集团渤海钻探工程有限公司 | The pressure break preparation method of high intensity solubility nano_scale particle diverting agent |
| CN106967401A (en) * | 2017-03-21 | 2017-07-21 | 中国石油集团渤海钻探工程有限公司 | A kind of pressure break soluble nano-scale particle diverting agent of high intensity |
| CN110017114A (en) * | 2019-04-03 | 2019-07-16 | 杨凌单色生物科技有限公司 | A kind of well killing method and well killing fluid of novel well workover |
| CN111925781A (en) * | 2020-07-06 | 2020-11-13 | 西安石油大学 | Inorganic homogeneous liquid for balanced pressure workover treatment, preparation method and use method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475797A (en) * | 2008-12-25 | 2009-07-08 | 中国科学院长春应用化学研究所 | Temperature resistant water base fracturing fluid thickening agent and preparation thereof |
| CN102643637A (en) * | 2012-03-22 | 2012-08-22 | 中国石油天然气股份有限公司 | clean fracturing fluid |
| CN102994064A (en) * | 2011-09-14 | 2013-03-27 | 孙斌 | Novel clean fracturing fluid for hydraulic fracturing |
| CN103289669A (en) * | 2013-05-28 | 2013-09-11 | 四川安东油气工程技术服务有限公司 | Surfactant for fracturing fluid and preparation method and fracturing fluid thereof |
-
2014
- 2014-12-29 CN CN201410834115.0A patent/CN104592967A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475797A (en) * | 2008-12-25 | 2009-07-08 | 中国科学院长春应用化学研究所 | Temperature resistant water base fracturing fluid thickening agent and preparation thereof |
| CN102994064A (en) * | 2011-09-14 | 2013-03-27 | 孙斌 | Novel clean fracturing fluid for hydraulic fracturing |
| CN102643637A (en) * | 2012-03-22 | 2012-08-22 | 中国石油天然气股份有限公司 | clean fracturing fluid |
| CN103289669A (en) * | 2013-05-28 | 2013-09-11 | 四川安东油气工程技术服务有限公司 | Surfactant for fracturing fluid and preparation method and fracturing fluid thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479464A (en) * | 2015-08-31 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of temporarily stifled type high temperature well killing fluid being applied to low-permeability oil deposit and preparation method |
| CN106905941A (en) * | 2017-03-21 | 2017-06-30 | 中国石油集团渤海钻探工程有限公司 | The pressure break preparation method of high intensity solubility nano_scale particle diverting agent |
| CN106967401A (en) * | 2017-03-21 | 2017-07-21 | 中国石油集团渤海钻探工程有限公司 | A kind of pressure break soluble nano-scale particle diverting agent of high intensity |
| CN110017114A (en) * | 2019-04-03 | 2019-07-16 | 杨凌单色生物科技有限公司 | A kind of well killing method and well killing fluid of novel well workover |
| CN110017114B (en) * | 2019-04-03 | 2022-01-07 | 陕西友邦石油工程技术有限公司 | Novel well killing method for well repair |
| CN111925781A (en) * | 2020-07-06 | 2020-11-13 | 西安石油大学 | Inorganic homogeneous liquid for balanced pressure workover treatment, preparation method and use method |
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