CN104403651A - High-strength oil well wet-method spherical solid sand anti-sloughing particles preparation method - Google Patents
High-strength oil well wet-method spherical solid sand anti-sloughing particles preparation method Download PDFInfo
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- CN104403651A CN104403651A CN201410510834.7A CN201410510834A CN104403651A CN 104403651 A CN104403651 A CN 104403651A CN 201410510834 A CN201410510834 A CN 201410510834A CN 104403651 A CN104403651 A CN 104403651A
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- sand
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- oil well
- spherical solid
- strength oil
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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
- C09K8/56—Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
Abstract
The invention relates to a high-strength oil well wet-method spherical solid sand anti-sloughing particles preparation method, which comprises a mass fraction formula and a preparation method. The anti-sloughing particles comprises the following components by mass fraction: epoxy resin: synergist: polymerization inhibitor: curing agent and sand is 7-9: 0.3-0.5: 4-6: 3-5: 79.5-85.7; the preparation method comprises the following steps: adding an epoxy resin, a synergist, a dispersant and a polymerization inhibitor according to order and proportion in a certain amount of sand under uninterrupted stirring condition, heating to 35-60 DEG C, insulating for reacting for about 4 hours, then adding a curing agent and mixing to obtain the product. The method has the advantages that under stratum condition, resin with low molecular weight generates a condensation reaction, non-melting space polymers can be further formed, the stratum sand can be firmly consolidated, and the stratum has high permeability.
Description
Technical field
The present invention relates to the preparation of the spherical solid anti-collapse particle of sand of a kind of high-strength oil well wet method.Be devoted to improve sand-fixing effect.
Technical background
At present, oil-water well chemical sand-fixing technology solves oil and water well to shake out problem, investigator is devoted to the research of oil and water well sand control, solid sand always, at present, form comparatively supporting overall technology, as: stratum, well area far away stabilization technique, nearly well and borehole wall sand consolidation technique, Gu Shadushui and solid sand block releasing technique, FRACTURING SAND CONTROL TECHNOLOGY, consolidate the preconditioning technique of Flooding in Borehole.But sand-fixing agent used is due to shortcomings such as permeability loss are large, ultimate compression strength is not high, and difficulty is applicable to the oil and water well that the serious and stratum of formation sand production subsides.
Summary of the invention
The preparation method of the spherical solid anti-collapse particle of sand of a kind of high-strength oil well of object of the present invention wet method, existing sand-fixing agent, due to shortcomings such as permeability loss are large, ultimate compression strength is not high, is not suitable for the oil and water well that the serious and stratum of formation sand production subsides.Overcome the technological deficiency that above-mentioned sand-fixing agent exists, prepare the spherical solid anti-collapse particle of sand of a kind of high-strength oil well wet method, under formation conditions, low-molecular-weight resin generation condensation reaction, further define insoluble, not molten three-dimensional polymeric molecule, by reservoir sand securely consolidation get up, simultaneously keep stratum there is higher perviousness.
Technical scheme of the present invention is achieved in the following ways:
The formula that the present invention is made into the component of massfraction is:
Epoxy resin: synergistic agent: stopper: solidifying agent: sand=7 ~ 9:0.3 ~ 0.5:4 ~ 6:3 ~ 5:79.5 ~ 85.7;
Described epoxy resin is milk sap.
Described synergistic agent is Ethoxysilane coupler.
Described stopper is low mass molecule alcohol.
Described solidifying agent is aldehyde compound.
Making method of the present invention is as follows:
By epoxy resin, synergistic agent, stopper in order with ratio under the uninterrupted condition stirred, add successively in a certain amount of sand, under being warmed to 35 DEG C ~ 60 DEG C conditions, insulation reaction 4 hours, then adds solidifying agent, mix and blend 1 hour.
Working mechanism of the present invention is as follows:
The present invention includes epoxy resin, synergistic agent, stopper, solidifying agent; The spherical solid anti-collapse particle of sand of the wet method prepared thus, under formation conditions, be attached to the low-molecular-weight resin generation condensation reaction of sand surface, define insoluble, not molten three-dimensional polymeric molecule, by reservoir sand securely consolidation get up, thus ensure that stratum has higher perviousness.
Effect of the present invention is:
(1), this solidifying agent is greatly improved in temperature tolerance, adsorptivity and chemical stability;
(2) feature that, this sand-fixing agent consumption is few, permeability loss is little, ultimate compression strength is high, cost is low, site operation is simple, safe and reliable; The layering of multiple zone well can be solved, select layer sand control, be applicable to the sand output well that the serious and stratum of formation sand production subsides;
(3) this solidifying agent construction preparation is easy, easily injects stratum, good with the various fluid compatibleness in stratum; Under the aqueous environment of stratum, solidification intensity is high, Heat stability is good, high temperature resistant 180 DEG C; Induration ultimate compression strength is high is 8 ~ 18MPa.
embodiment
The present invention includes the formula be made into the component of massfraction:
Epoxy resin: synergistic agent: stopper: solidifying agent: sand=7 ~ 9:0.3 ~ 0.5:4 ~ 6:3 ~ 5:79.5 ~ 85.7;
Making method of the present invention is as follows:
By epoxy resin, synergistic agent, stopper in order with ratio under the uninterrupted condition stirred, add successively in a certain amount of sand, under being warmed to 35 DEG C ~ 60 DEG C conditions, insulation reaction 4 hours, then adds solidifying agent, mix and blend 1 hour.
Epoxy resin: synergistic agent: stopper: solidifying agent: sand=7 ~ 9:0.3 ~ 0.5:4 ~ 6:3 ~ 5:79.5 ~ 85.7;
Embodiment 1:(recipe ingredient is massfraction)
(1) epoxy resin, 6 ~ 8 parts;
(2) synergistic agent, silane coupling agent, 0.3 ~ 0.4 part;
(3) stopper, oxy-compound ethanol, 5 ~ 6 parts;
(4) solidifying agent, formaldehyde, 5 parts;
(5) global quartz powder: 80.6 parts
Density is 1.35 ~ 1.65g/cm
3, state is dark coating particles.
Embodiment 1:(recipe ingredient is massfraction)
(1) epoxy resin, 8 ~ 9 parts;
(2) synergistic agent, silane coupling agent, 0.4 ~ 0.5 part;
(3) stopper, oxy-compound Virahol, 5 ~ 6 parts;
(4) solidifying agent, slowly-releasing aldehyde, 5 parts;
(5) baking ceramsite sand: 79.5 parts
Density is 1.35 ~ 1.65g/cm
3, state is dark coating particles.
Mechanism of the present invention is: the present invention is made up of epoxy resin, synergistic agent, stopper, solidifying agent.That a kind of molecular weight distribution is wider, the comprehensive resin sand consolidation agent that molecular-weight average is lower, this solid anti-collapse particle of sand is clamp-oned the zone of interest that shakes out, multiple strong polar group in sand-fixing agent molecule passes through physics chemical action, be combined with formation particle, further define insoluble, not molten three-dimensional polymeric molecule, by reservoir sand securely consolidation get up, thus ensure that stratum has higher perviousness.
embody rule
According to the spherical solid anti-collapse particulates' properties of sand, have selected L23-15 well and carried out the anti-collapse test in place of solid sand.L23-15 well is a bite abandoned well facing dish oil field, and artificial bottom of a well 2007m, core intersection 8m, oil saturation is 66% ~ 73%, net porosity 27% ~ 29%, and horizontal permeability 200 ~ 1200 μm 2, loose cementation, formation sand production is serious.This well is in July, 2012 perforation, serious owing to shaking out, and can not normally produce.Carry out on January 26th, 2013 producing normally after the solid sand of the spherical anti-collapse particle of sand admittedly of high-strength oil well wet method is constructed, day produce oil 5.1t, has added up normally to produce 371d by June, 2014, the oily 1892.1t of accumulative increasing always.
Claims (7)
1. the preparation method of the spherical solid anti-collapse particle of sand of high-strength oil well wet method, comprise its massfraction formula and making method, massfraction formula is: epoxy resin: synergistic agent: stopper: solidifying agent: sand=7 ~ 9:0.3 ~ 0.5:4 ~ 6:3 ~ 5:79.5 ~ 85.7.
2. the preparation method of the spherical solid anti-collapse particle of sand of a kind of high-strength oil well wet method according to claim 1, is characterized in that: described epoxy resin is colourless viscous liquid.
3. the preparation method of the spherical solid anti-collapse particle of sand of a kind of high-strength oil well wet method according to claim 1, is characterized in that: described synergistic agent is Ethoxysilane coupler.
4. the preparation method of the spherical solid anti-collapse particle of sand of a kind of high-strength oil well wet method according to claim 1, is characterized in that: described stopper is low mass molecule alcohol.
5. the preparation method of the spherical solid anti-collapse particle of sand of a kind of high-strength oil well wet method according to claim 1, is characterized in that: described solidifying agent is aldehyde or slowly-releasing aldehyde.
6. the preparation method of the spherical solid anti-collapse particle of sand of a kind of high-strength oil well wet method according to claim 1, is characterized in that: the described spherical solid anti-collapse particle of sand is high-strength spherical particle.
7. the preparation method of the spherical solid anti-collapse particle of sand of a kind of high-strength oil well wet method according to claim 1, it is characterized in that: in described formula by epoxy resin, synergistic agent, stopper in order with ratio under the uninterrupted condition stirred, add in a certain amount of sand successively, under being warmed to 35 DEG C ~ 60 DEG C conditions, insulation reaction 4 hours, then solidifying agent is added, mix and blend 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410510834.7A CN104403651B (en) | 2014-09-29 | 2014-09-29 | A kind of preparation method of the high-strength oil well wet method anti-collapse particle of spherical solid sand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410510834.7A CN104403651B (en) | 2014-09-29 | 2014-09-29 | A kind of preparation method of the high-strength oil well wet method anti-collapse particle of spherical solid sand |
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| CN104403651A true CN104403651A (en) | 2015-03-11 |
| CN104403651B CN104403651B (en) | 2017-06-30 |
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| CN201410510834.7A Expired - Fee Related CN104403651B (en) | 2014-09-29 | 2014-09-29 | A kind of preparation method of the high-strength oil well wet method anti-collapse particle of spherical solid sand |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753302A (en) * | 2016-12-02 | 2017-05-31 | 中国石油大学(华东) | Active washing oil sand-fixating agent and preparation method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747678A (en) * | 1971-04-16 | 1973-07-24 | Shell Oil Co | Consolidating reservoir formation sand with underdisplaced resin |
| US3857444A (en) * | 1972-10-06 | 1974-12-31 | Dow Chemical Co | Method for forming a consolidated gravel pack in a subterranean formation |
| CN102660246A (en) * | 2012-04-28 | 2012-09-12 | 武汉工程大学 | Precoated sand used for sand prevention for intermediate and low temperate oil deposit and preparation method thereof |
| CN103013485A (en) * | 2012-12-12 | 2013-04-03 | 中国石油天然气股份有限公司 | Modified resin sand consolidation agent as well as preparation method and application thereof |
-
2014
- 2014-09-29 CN CN201410510834.7A patent/CN104403651B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747678A (en) * | 1971-04-16 | 1973-07-24 | Shell Oil Co | Consolidating reservoir formation sand with underdisplaced resin |
| US3857444A (en) * | 1972-10-06 | 1974-12-31 | Dow Chemical Co | Method for forming a consolidated gravel pack in a subterranean formation |
| CN102660246A (en) * | 2012-04-28 | 2012-09-12 | 武汉工程大学 | Precoated sand used for sand prevention for intermediate and low temperate oil deposit and preparation method thereof |
| CN103013485A (en) * | 2012-12-12 | 2013-04-03 | 中国石油天然气股份有限公司 | Modified resin sand consolidation agent as well as preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 许毓等: "改性环氧树脂固砂剂SSA的研究", 《钻井液与完井液》 * |
| 顾轶卓等: "新型环氧-酚醛树脂体系的固砂原理与技术", 《北京航空航天大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753302A (en) * | 2016-12-02 | 2017-05-31 | 中国石油大学(华东) | Active washing oil sand-fixating agent and preparation method and application |
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| CN104403651B (en) | 2017-06-30 |
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Granted publication date: 20170630 Termination date: 20190929 |