CN102604627A - Acid fracturing temporary plugging agent - Google Patents
Acid fracturing temporary plugging agent Download PDFInfo
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- CN102604627A CN102604627A CN2011103306091A CN201110330609A CN102604627A CN 102604627 A CN102604627 A CN 102604627A CN 2011103306091 A CN2011103306091 A CN 2011103306091A CN 201110330609 A CN201110330609 A CN 201110330609A CN 102604627 A CN102604627 A CN 102604627A
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- temporary plugging
- acid fracturing
- plugging agent
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- carbonate
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Abstract
The invention relates to an acid fracturing temporary plugging agent, which belongs to the field of oilfield chemistry and particularly relates to an acid fracturing temporary plugging agent applied to fracturing and acidification operations of a deep-layer, long-well-section and large-span reservoir of an oilfield. The acid fracturing temporary plugging agent is formed by combining resin, ozokerite, calcium carbonate, magnesium carbonate, potassium chloride and ammonium chloride. The adaptive temperature of a stratum can achieve 100 DEG C, the plugging rate is above 96%, the acid solubility is above 98%, the temporary plugging strength is greater than 50Mpa, acid fracturing temporary plugging diversion of a long well section of the carbonate reservoir can be effectively met, and the success rate of acid fracturing construction of the long well section can be improved.
Description
Technical field
The present invention relates to a kind of acid fracturing temporary plugging agent, belong to the oilfield chemistry field, especially be applied to the big reservoir fracturing of oil field deep layer long well section, span and the acid fracturing temporary plugging agent of acidizing treatment.
Background technology
When oil gas well long well section is carried out pressure break, use temporary plugging agent usually." fld environment protection " 2009 the 19th the 02nd phases of volume disclose one piece of " development of water-soluble temporary plugging agent HD and evaluation " document, have introduced water-soluble temporary plugging agent HD.This temporary plugging agent adopts inorganic salts, and (normal temperature is slightly soluble in water; Rising along with temperature and solid-to-liquid ratio; Solubleness increases gradually) and organic acid (mixture of organic acid and organic acid salt, softening temperature is higher, it is less that solubility with temperature changes) and other additives (comprise the high molecular weight water soluble polymer SEPIGEL 305; Tensio-active agent LAURIC ACID 99 MIN monoesters, linking agent and solid particulate) develop water-soluble temporary plugging agent.This temporary plugging agent good water solubility is applicable in well and the highly aqueous well operations, still, can not and be insoluble to acid with acid-respons, to the carbonate gas reservoir, is difficult to reach de-plugging automatically behind the acid fracturing, is prone to cause defectives such as reservoir secondary pollution.
Application number is 200410009408.1 patent; A kind of water-soluble fracture acidizing temporary plugging agent is disclosed; Be used for oil and water well and selecting pressure break and multiple cracking fracturing process temporarily blocking layer section; This temporary plugging agent is made up of gelatine, sulfonated gilsonite and three kinds of compositions of guanidine glue, the same existence the defective of de-plugging automatically behind the carbonate gas reservoir acid fracturing.
Application number is 91101010.6 patent, discloses the Temperarily blocking agent for water soluble stratum of a kind of oil field compression fracture well to need temporarily blocking layer section, and it is that gelatine, sesbania powder (or hydroxymethyl starch), sulfonated gilsonite (or sulfonation tannin extract) are filled a prescription in proportion; Earlier gelatine being joined in 70～80 ℃ of water fully dissolves it; After treating that temperature is reduced to 40～50 ℃, add the sesbania powder and stir, add sulfonated gilsonite thereafter again; The powerful stirring; Spread crushed after being dried out evenly and sieve, select granularity 3～6mm, the same existence the defective of de-plugging automatically behind the carbonate gas reservoir acid fracturing as temporary plugging agent.
Summary of the invention
To the present invention seeks to that the Applicable temperature that temporary plugging agent of the prior art exists is range limited in order overcoming, de-plugging automatically behind the carbonate gas reservoir acid fracturing, to be prone to cause defective such as reservoir secondary pollution, a kind of acid fracturing temporary plugging agent is provided.
The object of the invention is realized through following scheme:
The present invention is combined by resin, ceresine, lime carbonate, magnesiumcarbonate, Repone K, ammonium chloride, prepares by following mass percent:
Resin accounts for 16-18%, ceresine and accounts for that 12-15%, lime carbonate 33-37%, magnesiumcarbonate 17-18%, Repone K account for 8-9%, ammonium chloride accounts for 8-9%.
Described resin is petroleum resin, and its softening point range is 60-80 ℃;
Described cereous melting range is 61-78 ℃.
The present invention utilizes carbonate and acid fracturing liquid complete reaction; Temporary plugging agent de-plugging automatically behind acid fracturing that the carbonate gas reservoir is used; Through the use of this acid fracturing temporary plugging agent, make the carbonate reservoir realize the stifled temporarily shunting of long well section, improved the construction success ratio of long well section.
Embodiment
Embodiment 1: the temporary plugging agent of preformulation 1000kg, and needing softening temperature is to pour agitated pool into behind 80 ℃ petroleum resin 180k g, the ceresine 150kg pulverize separately that softening temperature is 78 ℃ to mix; In agitated pool, add lime carbonate 330kg, magnesiumcarbonate 170kg, Repone K 80kg, ammonium chloride 90kg then successively again; Even above material thorough mixing; Send into material in the dryer then and dry; The oven dry material is directly sent in the kibbler and is pulverized, sieves, and packs by packaging standard at last, can obtain acid fracturing temporary plugging agent of the present invention.
Embodiment 2: the temporary plugging agent of preformulation 1000kg, and needing softening temperature be 70 ℃ petroleum resin 170kg, softening temperature is to pour agitated pool into behind 69.5 ℃ the ceresine 135kg pulverize separately to mix.In agitated pool, add lime carbonate 350kg, magnesiumcarbonate 175k, Repone K 85kg, ammonium chloride 85kg then successively again; Even above material thorough mixing; Send into material in the dryer then and dry; The oven dry material is directly sent in the kibbler and is pulverized, sieves, and packs by packaging standard at last.
Embodiment 3: the temporary plugging agent of preformulation 1000kg, and needing softening temperature is to pour agitated pool into behind 60 ℃ petroleum resin 160kg, the ceresine 120kg pulverize separately that softening temperature is 61 ℃ to mix; In agitated pool, add lime carbonate 370kg, magnesiumcarbonate 180kg, Repone K 90kg, ammonium chloride 80kg then successively again; Even above material thorough mixing; Send into material in the dryer then and dry; The oven dry material is directly sent in the kibbler and is pulverized, sieves, and packs by packaging standard at last.
Table 1 is embodiment and effectiveness indicator
Can be known that by table 1 the present invention adapts to FT can reach 100 ℃, sealing ratiod is more than 96%, and acid is dissolved rate more than 98%, and stifled temporarily intensity can effectively satisfy the stifled temporarily shunting of carbonate reservoir long well section acid fracturing greater than 50Mpa, improves the acid fracturing construction success ratio of long well section.
Claims (2)
1. acid fracturing temporary plugging agent is characterized in that: contain resin, ceresine, lime carbonate, magnesiumcarbonate, Repone K, ammonium chloride, wherein:
Described resin is petroleum resin, and its softening point range is 60-80 ℃;
Described cereous melting range is 6l-78 ℃.
2. acid fracturing temporary plugging agent according to claim 1 is characterized in that: its component is prepared by following mass percent: resin accounts for 16-18%, ceresine and accounts for that 12-15%, lime carbonate 33-37%, magnesiumcarbonate 17-18%, Repone K account for 8-9%, ammonium chloride accounts for 8-9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103306091A CN102604627A (en) | 2011-10-26 | 2011-10-26 | Acid fracturing temporary plugging agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103306091A CN102604627A (en) | 2011-10-26 | 2011-10-26 | Acid fracturing temporary plugging agent |
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| CN102604627A true CN102604627A (en) | 2012-07-25 |
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| CN2011103306091A Pending CN102604627A (en) | 2011-10-26 | 2011-10-26 | Acid fracturing temporary plugging agent |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571447A (en) * | 2012-08-03 | 2014-02-12 | 中国石油化工股份有限公司 | Self-cleaning temporary plugging agent for drilling fluid and preparation method of self-cleaning temporary plugging agent |
| 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 thickened oil steam huff-puff well |
| CN103775023A (en) * | 2013-01-30 | 2014-05-07 | 中国石油天然气股份有限公司 | Well killing construction method for low-pressure oil and gas well |
| CN105062443A (en) * | 2015-07-24 | 2015-11-18 | 中国石油天然气股份有限公司 | Oil-soluble temporary plugging agent and preparation method thereof |
| CN106350043A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Compound temporary plugging agent and compound temporary plugging method used in temporary blocking turnaround fracture |
| CN107474809A (en) * | 2016-06-08 | 2017-12-15 | 中国石油天然气集团公司 | A kind of acid dissoluble cement class diverting agent and preparation method thereof |
| CN107828394A (en) * | 2017-11-23 | 2018-03-23 | 长江大学 | A kind of diverting agent and preparation method thereof |
| CN105062443B (en) * | 2015-07-24 | 2018-06-01 | 中国石油天然气股份有限公司 | Oil-soluble temporary plugging agent and preparation method thereof |
| CN113620995A (en) * | 2020-05-06 | 2021-11-09 | 中国石油天然气股份有限公司 | Temporary plugging material for fracture acidizing and preparation method thereof |
| CN114369450A (en) * | 2021-12-08 | 2022-04-19 | 延安祁北石油工程技术服务有限公司 | MCF fracturing temporary plugging agent and preparation method and application thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571447A (en) * | 2012-08-03 | 2014-02-12 | 中国石油化工股份有限公司 | Self-cleaning temporary plugging agent for drilling fluid and preparation method of self-cleaning temporary plugging agent |
| CN103775023A (en) * | 2013-01-30 | 2014-05-07 | 中国石油天然气股份有限公司 | Well killing construction method for low-pressure oil and gas well |
| CN103775023B (en) * | 2013-01-30 | 2016-05-11 | 中国石油天然气股份有限公司 | Well killing construction method for low-pressure oil and gas well |
| 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 thickened oil steam huff-puff well |
| CN105062443A (en) * | 2015-07-24 | 2015-11-18 | 中国石油天然气股份有限公司 | Oil-soluble temporary plugging agent and preparation method thereof |
| CN105062443B (en) * | 2015-07-24 | 2018-06-01 | 中国石油天然气股份有限公司 | Oil-soluble temporary plugging agent and preparation method thereof |
| CN107474809A (en) * | 2016-06-08 | 2017-12-15 | 中国石油天然气集团公司 | A kind of acid dissoluble cement class diverting agent and preparation method thereof |
| CN106350043A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Compound temporary plugging agent and compound temporary plugging method used in temporary blocking turnaround fracture |
| CN106350043B (en) * | 2016-07-22 | 2019-04-12 | 北京斯迪莱铂油气技术有限公司 | Complex Temporary Blocking agent and Complex Temporary Blocking method for temporarily blocking up in turnaround fracture |
| CN107828394A (en) * | 2017-11-23 | 2018-03-23 | 长江大学 | A kind of diverting agent and preparation method thereof |
| CN113620995A (en) * | 2020-05-06 | 2021-11-09 | 中国石油天然气股份有限公司 | Temporary plugging material for fracture acidizing and preparation method thereof |
| CN114369450A (en) * | 2021-12-08 | 2022-04-19 | 延安祁北石油工程技术服务有限公司 | MCF fracturing temporary plugging agent and preparation method and application thereof |
| CN114369450B (en) * | 2021-12-08 | 2022-12-27 | 延安祁北石油工程技术服务有限公司 | MCF fracturing temporary plugging agent and preparation method and application thereof |
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Application publication date: 20120725 |