CN102746837A - Microsphere temporary plugging agent for leakage oil well - Google Patents
Microsphere temporary plugging agent for leakage oil well Download PDFInfo
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- CN102746837A CN102746837A CN2012100281773A CN201210028177A CN102746837A CN 102746837 A CN102746837 A CN 102746837A CN 2012100281773 A CN2012100281773 A CN 2012100281773A CN 201210028177 A CN201210028177 A CN 201210028177A CN 102746837 A CN102746837 A CN 102746837A
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Abstract
The present invention relates to a microsphere temporary plugging agent for a leakage oil well. The temporary plugging agent is prepared mainly from a polymer tackifier and a cross-linking agent, wherein a mass percentage of the polymer tackifier is 60-80%, a mass percentage of the cross-linking agent is 20-40%, the polymer tackifier can be polyacrylamide (PAM), cellulose (CMC), a plant gum, and the like, and the cross-linking agent can be alum, borax, or a high valence metal salt. The microsphere temporary plugging agent of the present invention has characteristics of high temporary plugging success rate, easy use on site, no harm on the oil layer, and the like, can be widely used for leakage well sand washing, well washing, oil well workover, and other underground work constructions, and is especially suitable for long-distance and long well section temporary plugging of heavy leakage oil wells. With the technology of the present invention, oil well work efficiency and oilfield economic benefits can be substantially improved.
Description
Technical field:
The present invention relates to a kind of temporary plugging agent in stratum that is used to miss borehole operation constructions such as oil well sand washing, well-flushing, workover and cementing, belong to oil producing operation Technology class.
Background technology:
Along with the continuous extraction of constantly carrying out of producing of oil-field development and in-place oil, great change has all taken place in formation cementation and pore texture, and reservoir pressure begins to reduce gradually, and stratum deficit degree is on the rise.Particularly oil-field development is produced and is got into the middle and later periods, is accompanied by well water and shakes out, and causes glued destruction in immediate vicinity of wellbore and stratum leakage problem in debt unavoidably.In addition, because oil recovery rate is too fast, technological measures such as working system sudden change and wellfracturing acidifying also make reservoir stress receive havoc.Therefore, sand production, the oil well leakage, problems such as oil well stopping production are the exceptional hardships that faces the field produces midium or long term.Therefore, in carrying out borehole operation such as sand-flushing and workover construction, because stratum leakage in debt is serious, entry well fluid often takes place leak into stratum, the well internal recycle can't be set up, and borehole operation such as can't normally carry out at problem.If can not get up the leakage temporary transient shutoff in stratum this moment, bring serious harm will for the oil well subsequent production.In order to keep the borehole operation construction to carry out smoothly, main at present rice husk, sawdust, flyash, gelifying agent, the foaming agent etc. of using carry out shutoff to the leakage oil well.Yet owing to receive the restriction of DP technology technology and workover process measure, these methods still have some unsatisfactory places.As use inorganic plugging agents such as rice husk, sawdust, after the borehole operation construction task was accomplished, reservoir choke can't be removed voluntarily; Cause problems such as the oil layer pollution injury and the oil well underproduction; Be difficult to satisfy the field produces actual needs, therefore, it is extremely urgent to develop novel oil well temporary plugging technique.
Summary of the invention
The object of the present invention is to provide a kind of temporarily stifled effective, oil reservoir is not had injury, scene leakage oil well microballoon temporary plugging agent easy to use.
The present invention is achieved in that this kind leakage oil well microballoon temporary plugging agent is to be prepared from macromolecule tackifer, linking agent, and the two proportioning is: macromolecule tackifer 60%～80%, linking agent 20%～40%.Wherein said macromolecule tackifer can be SEPIGEL 305 (PAM), cellulose family (CMC), vegetable jelly etc., and linking agent can be high-valency metal salt such as alum, borax; Its preparation method is, it is even at first in proportion above-mentioned materials to be added in the mixing machine thorough mixing, uses tablets press to process the microsphere that diameter is 5～12mm afterwards, or to process diameter be 5～12mm, and length is 8～15mm cylinder shape.Can directly it be joined in the oil well according to perforated interval and oil well leakage degree when this microballoon temporary plugging agent uses, wherein more short grained microballoon temporary plugging agent entering stratum is after the aquation swelling, and viscosity sharply increases, even loses flowability.Microsphere that section diameter is bigger in addition or short column body just are stuck in oil well casing borehole place, and liquid leaks into stratum in the well thereby stop.The microballoon temporary plugging agent gets up the temporary transient shutoff of drop ply through the stifled borehole dual function of high viscoelastic body drag effect and card.When pump pressure begins to raise, can stop when stratum suction weakens adding, at this moment continue temporary plugging agent in the oil pipe to be replaced in the stratum and get final product with clear water.Because this kind temporary plugging agent outward appearance is microspheroidal or short cylinder, therefore can with formation pore and sleeve pipe borehole no-float, thereby obtain satisfied plugging effect, the stifled temporarily success ratio of constructing is improved greatly.The existing certain bearing resistance of this temporary plugging agent can be removed voluntarily after the construction task completion again and stop up, and zone permeability is recovered fully, and the oil reservoir of having avoided use mineral-type plugging agent to cause injures and blocks the oil reservoir accident and takes place.
It is simple that leakage oil well microballoon temporary plugging agent provided by the invention has production technique; On-the-spot easy to use; Stifled effective temporarily, oil reservoir there are not characteristics such as injury, utilize it can greatly improve oil well job execution efficient; Can be widely used in absorption well sand flushing, well-flushing and workover job execution, be specially adapted to remote, the temporary shutoff construction of long well section severe leakage oil well.
Description of drawings
Accompanying drawing is rig-site utilization of the present invention and technological principle synoptic diagram, among the figure: 1-surface string, 2-sand string, 3-oil pipe, 4-borehole, 5-microballoon temporary plugging agent, 6-oil reservoir.
Among the figure, 1-surface string, 2-sand string, 3-oil pipe, 4-borehole, 5-microballoon temporary plugging agent, 6-oil reservoir.
Embodiment:
Instance 1: a kind of leakage oil well microballoon temporary plugging agent method of manufacture is; At first take by weighing 80 kilograms of SEPIGEL 305s; In 20 kilograms of adding mixing machines of alum it is fully mixed, using tablets press to process diameter afterwards is 5～12mm microspheroidal, or to process diameter be 5～12mm; Length is the cylindrical temporary plugging agent of 8～1mm, uses the woven bag packed for standby use then.
Instance 2: a kind of leakage oil well microballoon temporary plugging agent method of manufacture is; At first take by weighing 70 kilograms of vegetable jelly; In 30 kilograms of adding mixing machines of borax it is fully mixed; Using tablets press to process diameter afterwards is 5～12mm microspheroidal, or to process length be 8～15mm short cylindrical temporary plugging agent, uses the woven bag packed for standby use then.
Instance 3: a kind of leakage oil well microballoon temporary plugging agent method of use is that at first according to oil well leakage degree and the perforated interval length microballoon temporary plugging agent an amount of with adding, common every rice bran oil layer microballoon temporary plugging agent consumption is 10～15 kilograms.When finding the oil well leakage, be carried into the absorption well section to the microballoon temporary plugging agent with clear water or sewage.The microballoon temporary plugging agent can make liquid phase viscosity sharply increase after meeting water, even loses flowability.Also there is the big slightly microsphere of section diameter to be stuck in sleeve pipe borehole place in addition, stops liquid to leak the oil-feed layer, so just can get up the temporary transient shutoff of absorption well section.When pump pressure begins to raise, stratum suction subtracts and promptly should stop to add, and with clear water microballoon temporary plugging agent in the oil pipe is replaced and totally can carry out the subsequent job construction.
Claims (3)
1. a leakage oil well microballoon temporary plugging agent is characterized in that this kind temporary plugging agent is prepared from macromolecule tackifer, linking agent, and the two proportioning is: macromolecule tackifer 60%～80%, linking agent 20%～40%; Wherein said macromolecule tackifer can be SEPIGEL 305, cellulose family or vegetable jelly, and linking agent can be alum, borax or high-valency metal salt.
2. microballoon temporary plugging agent according to claim 1 is characterized in that, this kind temporary plugging agent can be processed the microspheroidal that diameter is 5～12mm, and also can process diameter is 5～12mm, and length is that 8～15mm is cylindrical.
3. microballoon temporary plugging agent according to claim 1 is characterized in that this kind temporary plugging agent can also be processed powdery granule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100281773A CN102746837A (en) | 2012-01-13 | 2012-01-13 | Microsphere temporary plugging agent for leakage oil well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100281773A CN102746837A (en) | 2012-01-13 | 2012-01-13 | Microsphere temporary plugging agent for leakage oil well |
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| CN102746837A true CN102746837A (en) | 2012-10-24 |
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| CN2012100281773A Pending CN102746837A (en) | 2012-01-13 | 2012-01-13 | Microsphere temporary plugging agent for leakage oil well |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342881A (en) * | 2013-07-26 | 2013-10-09 | 四川川庆井下科技有限公司 | Degradable temporary plugging ball and preparation method thereof |
| CN103409121A (en) * | 2013-07-23 | 2013-11-27 | 中国石油天然气股份有限公司 | Water-soluble temporary plugging diversion agent for fracturing and preparation method thereof |
| CN103590804A (en) * | 2013-10-22 | 2014-02-19 | 中国石油天然气股份有限公司 | Temporary plugging and energizing treatment method for heavy oil steam-stimulated wells |
| CN105331340A (en) * | 2015-11-18 | 2016-02-17 | 辽宁石油化工大学 | High-temperature-resistant gel plugging agent |
| CN105441043A (en) * | 2014-08-11 | 2016-03-30 | 中国石油天然气股份有限公司 | Temporary plugging microsphere and preparation method thereof |
| CN109554172A (en) * | 2017-09-26 | 2019-04-02 | 中国石油化工股份有限公司 | A kind of acid fracturing diverting agent and its application |
| CN113956859A (en) * | 2021-10-25 | 2022-01-21 | 山东恒立重装新技术有限公司 | Temporary plugging ball and manufacturing method thereof |
| CN114718502A (en) * | 2021-01-05 | 2022-07-08 | 中国石油天然气股份有限公司 | Abandoned well plugging method |
| CN116410718A (en) * | 2021-12-29 | 2023-07-11 | 中国石油天然气股份有限公司 | Temporary plugging gel composition, temporary plugging material and plugging method |
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| US20060027364A1 (en) * | 2004-08-05 | 2006-02-09 | Kelly Patrick A | Stabilizing crosslinked polymer guars and modified guar derivatives |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409121A (en) * | 2013-07-23 | 2013-11-27 | 中国石油天然气股份有限公司 | Water-soluble temporary plugging diversion agent for fracturing and preparation method thereof |
| CN103342881A (en) * | 2013-07-26 | 2013-10-09 | 四川川庆井下科技有限公司 | Degradable temporary plugging ball and preparation method thereof |
| CN103342881B (en) * | 2013-07-26 | 2015-04-15 | 四川川庆井下科技有限公司 | Degradable temporary plugging ball and preparation method thereof |
| CN103590804A (en) * | 2013-10-22 | 2014-02-19 | 中国石油天然气股份有限公司 | Temporary plugging and energizing treatment method for heavy oil steam-stimulated wells |
| CN105441043B (en) * | 2014-08-11 | 2018-04-03 | 中国石油天然气股份有限公司 | A kind of temporarily stifled microballoon and preparation method thereof |
| CN105441043A (en) * | 2014-08-11 | 2016-03-30 | 中国石油天然气股份有限公司 | Temporary plugging microsphere and preparation method thereof |
| CN105331340A (en) * | 2015-11-18 | 2016-02-17 | 辽宁石油化工大学 | High-temperature-resistant gel plugging agent |
| CN105331340B (en) * | 2015-11-18 | 2018-05-25 | 辽宁石油化工大学 | A kind of high-temperature-resgelant gelant sealing agent |
| CN109554172A (en) * | 2017-09-26 | 2019-04-02 | 中国石油化工股份有限公司 | A kind of acid fracturing diverting agent and its application |
| CN114718502A (en) * | 2021-01-05 | 2022-07-08 | 中国石油天然气股份有限公司 | Abandoned well plugging method |
| CN114718502B (en) * | 2021-01-05 | 2023-12-22 | 中国石油天然气股份有限公司 | Abandoned well plugging method |
| CN113956859A (en) * | 2021-10-25 | 2022-01-21 | 山东恒立重装新技术有限公司 | Temporary plugging ball and manufacturing method thereof |
| CN113956859B (en) * | 2021-10-25 | 2023-01-17 | 山东恒立重装新技术有限公司 | Temporary plugging ball and manufacturing method thereof |
| CN116410718A (en) * | 2021-12-29 | 2023-07-11 | 中国石油天然气股份有限公司 | Temporary plugging gel composition, temporary plugging material and plugging method |
| CN116410718B (en) * | 2021-12-29 | 2024-05-17 | 中国石油天然气股份有限公司 | Temporary plugging gel composition, temporary plugging material and plugging method |
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Address after: 124010 Liaoning Panjin Liaohe oil field Hua Oil Industrial Co., Ltd. Applicant after: Gong Liwu Address before: 124010 Liaoning Panjin Liaohe oil field Hua Oil Industrial Co., Ltd. Applicant before: Gong Liwu |
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Application publication date: 20121024 |