CN100345932C - Cement permeation promoter for oil and gas well - Google Patents
Cement permeation promoter for oil and gas well Download PDFInfo
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- CN100345932C CN100345932C CNB2006100203849A CN200610020384A CN100345932C CN 100345932 C CN100345932 C CN 100345932C CN B2006100203849 A CNB2006100203849 A CN B2006100203849A CN 200610020384 A CN200610020384 A CN 200610020384A CN 100345932 C CN100345932 C CN 100345932C
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Abstract
The present invention relates to a cement permeation promoter for an oil and gas well. The permeation promoter is formed by compounding gum resin, modified aluminium powder, bitumen and chrysotile fiber which have the respectively percent of 25 to 35 wt% of gum resin, 8 to 12 wt% of modified aluminum powder, 35 to 45 wt% of bitumen and 16 to 24 wt% of chrysotile fiber. In a preparation method for the present invention, the aluminium powder is processed by potassium permanganate water solution, and the modified aluminum powder is obtained after passivated and dried, and the modified aluminum powder, the gum resin, the bitumen and the chrysotile fiber are mixed according to a certain proportion to obtain the permeation promoter. The permeation promoter can be compounded with other additives to prepare a novel permeation cement mortar system, and an oil and gas passage formed by the system after solidified under the condition of stratums has a certain permeation rate and high strength, and the present invention having the advantages of favorable temperature resistance and salt tolerance, stable chemical property and good oil phase permeation rate which is higher than water phase permeation rate can be used for fixing a well, preventing sand, blocking water, etc. in an oil and gas field.
Description
Technical field
The present invention relates to a kind of cement permeation promoter for oil and gas well.
Background technology
In processes such as oilfield drilling, completion and oil recovery volume increase, what produce after the Portland cement system gelling of being adopted all is the extremely low cement stone of rate of permeation, and its rate of permeation is greatly about 2 * 10
-5～1 * 10
-7μ m
2Between.And in the last few years, reinforcement along with the oil-gas field development dynamics, the novel concrete system---the perviousness cement system has a wide range of applications in oil-gas field, particularly at aspects such as well cementation, sand control, water blockoffs, very strong using value is arranged, be in particular in the following aspects: the well that creep into for underbalance (1), because the borehole wall can not form mud cake, be more vulnerable to injury than the well that mud cake is arranged, and extent of injury is even more serious.Use conventional well cementing of cement, the grout of higher density is not invaded in having the well of mud cake, is missed in hydrocarbon zone, and hydrocarbon-bearing pool is caused serious harm, and therefore need cement the well with the well that perviousness cement creeps into underbalance; (2) cause well to enlarge even formation " pregnant " the well section that collapses for halite layer, the corrosion of mud shale layer and natural cavern, major rupture seam.At the conventional well cementing of cement of this well Duan Zhongyong, perforating bullet is difficult to maybe can not penetrate cement mantle, even penetrate cement mantle, also since perforating bullet to enter reservoir depth little, it is long-pending little to rush down pasta, oil gas be difficult to find or Accumulation of Hydrocarbon output little.From improving exploration and development benefit, this well section need be used the perviousness well cementing of cement; (3) the cost height of present oil well chemical sand control, validity period is short, and perviousness cement can form the artificial borehole wall of high permeability, and sand controlling result is good, and cost is low; (4) in the reservoir for low pressure oil well or stress sensitive, if use conventional well cementing of cement, the cement of leakage in the crack is with permanent obstruction oil flow channel.Existing deep penetration technology and ACID FRACTURING TECHNOLOGY all can not be removed stopping up.From reducing operating cost, improve the angle of the success ratio of petroleum engineering, all require this new technology---perviousness cement; (5) the layer of oil gas production leak stopping often blocks payzone easily, and near the plugging operations the payzone is grievous injury oil reservoir often also.Thereby the stoppage engineering of layer of oil gas production also is badly in need of perviousness cement.
Owing to above reason, the research of perviousness cement is just seemed particularly important.And the key of research perviousness cement is the development to permeation promoter.At present, report to the cement permeation promoter does not almost have both at home and abroad, rarely seen " the high infiltration water mud system that is used for sand control " (Chen Dajun, Chen Erding, Han Lijuan. drilling fluid and 02 phase of well finishing liquid .2000), " construction of high infiltration cement and sand control capability research " (Chen Erding, Chen Dajun, Li Binyuan. 02 phase of Southwest Petroleum Institute journal .2001), " perviousness mortar architecture " (Chen Erding, Liu Chongjian, Chen Dajun. 01 phase of drilling technology .2003), " the sand control development and the performance evaluation of silicate composite material permeation promoter " (Chen Erding, Peng Hongjun, Zheng Yueyuan. 06 phase of oil drilling technology .2004), " the high pressure property research and the application of high infiltration cement cementitious material " (Li Binyuan, Wang Chengwu. 02 phase of Southwest Petroleum Institute journal .2003) etc. discuss to some extent in the literary composition, the cement permeation promoter has been done certain research, adopt the modified product of the oil soluble macromolecular material of natural or synthetic to be used as the cement permeation promoter, obtained certain achievement.But exist the anatonosis effect not so good, temperature resistance, saline-alkaline tolerance are relatively poor, the not high shortcoming of the ultimate compression strength of cement stone after the cement solidification.And the composite method of permeation promoter involved in the present invention employing natural organic matter and multiple inorganics makes, and can make cement stone on the basis that guarantees advantages of higher compressive strength, the rate of permeation of cement stone is significantly improved, and temperature resistance, anti-salt and alkali resistant ability are preferably arranged.
Summary of the invention
The object of the present invention is to provide a kind of cement permeation promoter for oil and gas well, this permeation promoter and other conventional oil well cement additive preparations, can form a kind of comprehensive perviousness mortar architecture, rate of permeation after this mortar architecture solidifies significantly improves and don't can cause big influence to the rate of permeation of cement stone, and can keep temperature resistance, anti-salt and alkali resistant ability preferably.
For reaching above technical purpose, the invention provides following technical scheme.
A kind of cement permeation promoter for oil and gas well is characterized in that, each component of this permeation promoter and composed as follows:
Gum resin 25%～35 weight %
Modified aluminium powder 8%～12 weight %
Pitch 35%～45 weight %
Chrysotile asbestos fibre 16%～24 weight %
The preparation method of this permeation promoter is: aluminium powder is handled with the aqueous solution that contains potassium permanganate 12～18 weight %, made its surface produce zone of oxidation and passivation, oven dry obtains required modified aluminium powder then.Promptly obtain permeation promoter with gum resin (containing more than the sodium abietate 80 weight %), pitch and chrysotile asbestos fibre with the modified aluminium powder after the passivation is composite.Wherein, gum resin contains 25%～35 weight % in permeation promoter; Modified aluminium powder contains 8%～12 weight %; Pitch contains 35%～45 weight %; Chrysotile asbestos fibre contains 16%～24 weight %.In manufacturing processed, require used modified aluminium powder can pass through 80 orders (178 μ m) sieve, the gum resin powder can pass through 80 orders (178 μ m) sieve, and the length of chrysotile asbestos fibre is 0.1～0.4cm, and length-to-diameter ratio is 4～10.This permeation promoter and other conventional gas and oil well water mud additive complexes use, and can make a kind of novel perviousness mortar architecture.
The perviousness grout of permeation promoter of the present invention and preparation compared with prior art has following advantage:
(1) use of permeation promoter significantly improves the penetrating quality of cement stone, and (cement stone is behind 90 ℃ of following maintenance 48h, and under the situation that guarantees cement stone ultimate compression strength 〉=5MPa, its rate of permeation can reach 800 * 10 to keep higher intensity
-3μ m
2);
(2) this permeation promoter and existing other conventional gas and oil well additive complexes use, the mortar architecture good combination property that makes, slurry is stable, the gas channel that solidifies back formation under formation condition has rate of permeation and intensity height, heatproof (115 ℃), salt tolerant, alkaline resistance properties are good, permeability to oil is higher than water phase permeability, advantages such as stable chemical performance.
(3) production of this product does not produce waste water, waste residue, and is pollution-free, produces simply, and cost is low, and performance is good.
Embodiment
Further specify the present invention below by embodiment.
Example 1～3rd illustrates the oil well cement permeation promoter that configures dissimilar (being applicable to different well temperature) by the dosage of adjusting the permeation promoter prescription.Example 4 is application examples of permeation promoter.
Embodiment 1
Get the aluminium powder 100g that can pass through 80 orders (178 μ m) sieve that Luzhou, Sichuan Yulong's super-fine material company limited produces, laterally be blown in 90 ℃ the reaction vessel, simultaneously above reaction vessel, spray into the aqueous solution that contains potassium permanganate 15% with spray pattern, aluminium powder is fully contacted with potassium permanganate solution, reaction and passivation just make required modified aluminium powder with its oven dry again.Get modified aluminium powder 10g, what be equipped with that GuangXi WuZhou turpentine Co., Ltd produces contains the gum resin of sodium abietate 80% or more and (can pass through 10 of 80 orders (178 μ m sieve) 30g, the production of Xinjiang nova industry (group) limited liability company
#Chrysotile asbestos fibre (length is 0.1～0.4cm, and length-to-diameter ratio is 4～10) 20g that building asphalt 40g and Sichuan Xin Kang asbestos deposit are produced, thorough mixing in puddling device promptly gets product---permeation promoter.
Embodiment 2
Get the aluminium powder 200g that can pass through 80 orders (178 μ m) sieve that Luzhou, Sichuan Yulong's super-fine material company limited produces, laterally be blown in 90 ℃ the reaction vessel, simultaneously above reaction vessel, spray into the aqueous solution that contains potassium permanganate 18% with spray pattern, aluminium powder is fully contacted with potassium permanganate, the reaction passivation just makes required modified aluminium powder with its oven dry again.Get modified aluminium powder 16g, what be equipped with that GuangXi WuZhou turpentine Co., Ltd produces contains 10 of gum resin (can pass through 80 orders (178 μ m) sieve) 56g of sodium abietate 80% or more, the production of Xinjiang nova industry (group) limited liability company
#Chrysotile asbestos fibre (length is 0.1～0.4cm, and length-to-diameter ratio is 4～10) 44g that building asphalt 84g and Sichuan Xin Kang asbestos deposit are produced, thorough mixing in puddling device promptly gets product---permeation promoter.
Embodiment 3
Get the aluminium powder 80g that can pass through 80 orders (178 μ m) sieve that Luzhou, Sichuan Yulong's super-fine material company limited produces, laterally be blown in 90 ℃ the reaction vessel, simultaneously above reaction vessel, spray into the aqueous solution that contains potassium permanganate 16% with spray pattern, aluminium powder is fully contacted with potassium permanganate, the reaction passivation just makes required modified aluminium powder with its oven dry again.Get modified aluminium powder 12g, what be equipped with that GuangXi WuZhou turpentine Co., Ltd produces contains 10 of gum resin (can pass through 80 orders (178 μ m) sieve) 32g of sodium abietate 80% or more, the production of Xinjiang nova industry (group) limited liability company
#Chrysotile asbestos fibre (length is 0.1～0.4cm, and length-to-diameter ratio is 4～10) 18g that building asphalt 38g and Sichuan Xin Kang asbestos deposit are produced, thorough mixing in puddling device promptly gets product---permeation promoter.
Embodiment 4
With this permeation promoter 0.9t, be equipped with cement dispersants SXY20kg, cement water reducer HR-2A80kg, setting accelerator CaCl
2150kg and oil well G class g cement 13.5t, quartz sand 10.5t are mixed with the perviousness mortar architecture by water cement ratio W/C=0.54 and are used for oilwell water shutoff after doing and mixing.Reach 90 ℃ in the well temperature, behind the Hou Ning 48h, the ultimate compression strength 〉=5MPa of cement stone, rate of permeation reaches 800 * 10
-3μ m
2, folding strength is 2.0～2.2MPa, has certain temperature resistance, anti-salt, antiscour and resistance to corrosion, water plugging effect is good.And do not add permeation promoter, and when other component dosages are identical with condition, the ultimate compression strength≤15MPa of cement stone, rate of permeation is about 5 * 10
-3μ m
2, folding strength is about 7MPa.Compare with the cement stone after adding permeation promoter, though resistance to compression and folding strength are higher, rate of permeation is extremely low, so this permeation promoter can keep on the certain intensity based of cement stone its rate of permeation significantly being risen, effect is obvious.
Claims (2)
1 one kinds of cement permeation promoter for oil and gas well, it is characterized in that, this permeation promoter be by gum resin, modified aluminium powder, pitch, chrysotile asbestos fibre is composite forms, described modified aluminium powder is aluminium powder to be handled the post-passivation oven dry with the aqueous solution that contains potassium permanganate 12～18 weight % form, each percentages of ingredients is:
Gum resin 25～35 weight %
Modified aluminium powder 8～12 weight %
Pitch 35～45 weight %
Chrysotile asbestos fibre 16～24 weight %.
2 cement permeation promoters as claimed in claim 1 is characterized in that, described gum resin contains more than the sodium abietate 80 weight %.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100203849A CN100345932C (en) | 2006-03-01 | 2006-03-01 | Cement permeation promoter for oil and gas well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100203849A CN100345932C (en) | 2006-03-01 | 2006-03-01 | Cement permeation promoter for oil and gas well |
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| Publication Number | Publication Date |
|---|---|
| CN1810916A CN1810916A (en) | 2006-08-02 |
| CN100345932C true CN100345932C (en) | 2007-10-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479460B (en) * | 2016-10-17 | 2021-03-02 | 西南石油大学 | Permeable cement slurry for steam huff-puff to steam flooding oil layer transformation |
| CN109772297B (en) * | 2017-11-15 | 2022-05-10 | 宁波市雨辰环保科技有限公司 | Preparation method of catalyst for removing volatile organic compounds by catalytically activating oxygen at room temperature, and regeneration method and application thereof |
| CN108048059A (en) * | 2018-01-09 | 2018-05-18 | 成都川锋栲胶有限公司 | Oil-well cement agent for anti gassing-out preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065083A (en) * | 1991-03-19 | 1992-10-07 | 魏金统 | Strong waterproof protecting and fixing agent |
| CN1300807A (en) * | 1999-12-17 | 2001-06-27 | 邵秋生 | Water-proof cold adhesive |
| CN1536031A (en) * | 2003-04-11 | 2004-10-13 | 陈书怡 | Polycrystalline state composite and its preparation method |
| EP1620479A1 (en) * | 2002-10-15 | 2006-02-01 | Exxonmobil Chemical Patents Inc. | Polyolefin adhesive compositions and articles made therefrom |
-
2006
- 2006-03-01 CN CNB2006100203849A patent/CN100345932C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065083A (en) * | 1991-03-19 | 1992-10-07 | 魏金统 | Strong waterproof protecting and fixing agent |
| CN1300807A (en) * | 1999-12-17 | 2001-06-27 | 邵秋生 | Water-proof cold adhesive |
| EP1620479A1 (en) * | 2002-10-15 | 2006-02-01 | Exxonmobil Chemical Patents Inc. | Polyolefin adhesive compositions and articles made therefrom |
| CN1536031A (en) * | 2003-04-11 | 2004-10-13 | 陈书怡 | Polycrystalline state composite and its preparation method |
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| CN1810916A (en) | 2006-08-02 |
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Granted publication date: 20071031 Termination date: 20100301 |