CN1963144A - Pneumatic deep-penetrating composite block-removing method for oil layer - Google Patents
Pneumatic deep-penetrating composite block-removing method for oil layer Download PDFInfo
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- CN1963144A CN1963144A CN 200610128302 CN200610128302A CN1963144A CN 1963144 A CN1963144 A CN 1963144A CN 200610128302 CN200610128302 CN 200610128302 CN 200610128302 A CN200610128302 A CN 200610128302A CN 1963144 A CN1963144 A CN 1963144A
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Abstract
The pneumatic deep penetrating oil layer composite deblocking oil exploration technique optimizes the chemical hot gas deblocking technique combined with current situation. Making use of the controllable high pressure aperture resulted from the major pharmaceutical reaction around the well that indirectly triggering heat dissipation reaction of auxiliary pharmaceuticals in perforation section, the successive pressure made by the high temperature and pressure gas after auxiliary pharmaceutical reaction further enlarging the aperture, etching the aperture by the filled in deblocking solvent, it successfully eliminates single phase or multi phase blockings deep down in the oil layer and improves productivity and filling.
Description
One, technical field: the present invention relates to a kind of oil drilling technology, especially Pneumatic deep-penetrating composite block-removing method for oil layer.
Two, background technology: at present, in oil field development,, make notes because improper measures such as drilling well, water filling, operation cause reservoir pollution, adopt two sections improve the difficulty increase.For the releasing that the nearly well band of oil reservoir pollutes, the main at present both at home and abroad technology of using comprises chemical method, physics method, physical-chemical process and microbial method.Chemical method comprises the de-plugging of stifled, the various slow low injury acid solution of conventional acid lyolysis; The physics method comprises de-plugging methods such as multiple-pulse high enegry gas fracturing de-plugging method, low-frequency electric pulse de-plugging method, high-pressure water jet de-plugging method, hydraulic vibration de-plugging method, sound wave-ultrasonic wave; Simple chemical method and the de-plugging of physics method are more effective for the shallow pollution releasing of nearly well band, and be relatively poor for deep obstruction and low permeability reservoir effect.
Three, summary of the invention: the purpose of this invention is to provide have widely applicable, the Pneumatic deep-penetrating composite block-removing method for oil layer that action effect is strong.It has overcome the shortcoming of other method, and it is at the oil field actual conditions, and the optimum organization of chemical hot gas block releasing technique forms.Promptly utilize major pharmaceutical to produce controllable high-voltage in the stratum around the well reaction and make seam, cause assistant medicament indirectly in perforated interval generation exothermic reaction, the assistant medicament reaction generates a large amount of high temperature and high pressure gas and replenishes as packing pressure, further expands the crack of making.The de-plugging solution etching crack of Zhu Ruing reaches the single-phase or compound novel increasing yield and injection method of stopping up mutually in the deep of removing oil reservoir at last.The object of the present invention is achieved like this, and the first step is installed well head after with oil pipe the transmission of major pharmaceutical and assistant medicament sealing system being arrived target zone.Second step started initiating device and causes the major pharmaceutical reaction, closed all valves of well head, and assistant medicament was clamp-oned special-purpose after after reacting 30 minutes; At first by causing the major pharmaceutical reaction, produce a large amount of high temperature, the body of calming the anger, enter the stratum by perforation, press off rock and produce the crack; Secondly the reaction of major pharmaceutical product initiation assistant medicament produces the more high temperature and high pressure gas of volume, forms pressure and replenishes to extend crack formation deep penetration; It three carries out corrosion by injecting aftertreatment fluid to fracture faces at last, make the crack after construction, be difficult to closure, reach the purpose that prolongs construction effect, finish the back in reaction and inject aftertreatment fluid from oil pipe, aftertreatment fluid and product form based on newborn crack such as the further etching of slow hot gas acid such as the low injury of hydrochloric acid, phosphoric acid etc., make the crack rock surface form plane of unconformity, be difficult to closure.The final compound obstruction in oil reservoir deep of removing improves the purpose that the seepage flow condition reaches volume increase, augmented injection.The 3rd step closing well reaction 2 hours; The oil well acid discharge.Well is carried out next step.
Effect of the invention process: the Pneumatic deep-penetrating composite block-removing method for oil layer field trial starts from March, 2003, test 11 mouthfuls of oil wells to the end of the year 2003 altogether in Liaohe Oil Field dawn oil recovery factory, the construction success rate is 100%, effective 10 mouthfuls, efficient is 90.9%, adds up to increase 3129.6 tons of oil by the end of the year.5 mouthfuls in well, technology success rate 100%, measure is efficient 80%, tired augmented injection 18135m
3.
Four, the specific embodiment: Pneumatic deep-penetrating composite block-removing method for oil layer, it is at the oil field actual conditions, the optimum organization of chemical hot gas block releasing technique forms.Promptly utilize major pharmaceutical to produce controllable high-voltage in the stratum around the well reaction and make seam, cause assistant medicament indirectly in perforated interval generation exothermic reaction, the assistant medicament reaction generates a large amount of high temperature and high pressure gas and replenishes as packing pressure, further expands the crack of making.The de-plugging solution etching crack of Zhu Ruing reaches the single-phase or compound novel increasing yield and injection method of stopping up mutually in the deep of removing oil reservoir at last.The object of the present invention is achieved like this, and the first step is installed well head after with oil pipe the transmission of major pharmaceutical and assistant medicament sealing system being arrived target zone.Second step started initiating device and causes the major pharmaceutical reaction, closed all valves of well head, and assistant medicament was clamp-oned special-purpose after after reacting 30 minutes; At first by causing the major pharmaceutical reaction, produce a large amount of high temperature, the body of calming the anger, enter the stratum by perforation, press off rock and produce the crack; Secondly the reaction of major pharmaceutical product initiation assistant medicament produces the more high temperature and high pressure gas of volume, forms pressure and replenishes to extend crack formation deep penetration; It three carries out corrosion by injecting aftertreatment fluid to fracture faces at last, make the crack after construction, be difficult to closure, reach the purpose that prolongs construction effect, finish the back in reaction and inject aftertreatment fluid from oil pipe, aftertreatment fluid and product form based on newborn crack such as the further etching of slow hot gas acid such as the low injury of hydrochloric acid, phosphoric acid etc., make the crack rock surface form plane of unconformity, be difficult to closure.The final compound obstruction in oil reservoir deep of removing improves the purpose that the seepage flow condition reaches volume increase, augmented injection.The 3rd step closing well reaction 2 hours; The oil well acid discharge.Well is carried out next step.
Claims (1)
1, Pneumatic deep-penetrating composite block-removing method for oil layer, it is characterized in that: it is at the oil field actual conditions, the optimum organization of chemistry hot gas block releasing technique forms, promptly utilize major pharmaceutical to produce controllable high-voltage and make seam in the stratum around the well reaction, cause assistant medicament indirectly in perforated interval generation exothermic reaction, the assistant medicament reaction generates a large amount of high temperature and high pressure gas and replenishes as packing pressure, further expand the crack of making, the de-plugging solution etching crack of Zhu Ruing at last, reach the single-phase or compound novel increasing yield and injection method of stopping up mutually in the deep of removing oil reservoir, the first step is installed well head after with oil pipe the transmission of major pharmaceutical and assistant medicament sealing system being arrived target zone; Second step started initiating device and causes the major pharmaceutical reaction, closed all valves of well head, and assistant medicament was clamp-oned special-purpose after after reacting 30 minutes; At first by causing the major pharmaceutical reaction, produce a large amount of high temperature, the body of calming the anger, enter the stratum by perforation, press off rock and produce the crack; Secondly the reaction of major pharmaceutical product initiation assistant medicament produces the more high temperature and high pressure gas of volume, forms pressure and replenishes to extend crack formation deep penetration; It three carries out corrosion by injecting aftertreatment fluid to fracture faces, make the crack after construction, be difficult to closure, reach the purpose that prolongs construction effect, finish the back in reaction and inject aftertreatment fluid from oil pipe, aftertreatment fluid and product form based on newborn crack such as the further etching of slow hot gas acid such as the low injury of hydrochloric acid, phosphoric acid etc., make the crack rock surface form plane of unconformity, are difficult to closure, the final compound obstruction in oil reservoir deep of removing improves the purpose that the seepage flow condition reaches volume increase, augmented injection; The 3rd step closing well reaction 2 hours; The oil well acid discharge.Well is carried out next step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101283022A CN100472030C (en) | 2006-11-30 | 2006-11-30 | Pneumatic deep-penetrating composite block-removing method for oil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101283022A CN100472030C (en) | 2006-11-30 | 2006-11-30 | Pneumatic deep-penetrating composite block-removing method for oil layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1963144A true CN1963144A (en) | 2007-05-16 |
| CN100472030C CN100472030C (en) | 2009-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101283022A Expired - Fee Related CN100472030C (en) | 2006-11-30 | 2006-11-30 | Pneumatic deep-penetrating composite block-removing method for oil layer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103975039A (en) * | 2011-11-23 | 2014-08-06 | 沙特阿拉伯石油公司 | Synthetic sweet spots in tight formations by injection of nano encapsulated reactants |
| CN109594964A (en) * | 2019-01-25 | 2019-04-09 | 西安石油大油气科技有限公司 | A kind of volume increase of oil gas field with "nine squares" aerodynamic force deep penetration composite deblocking process and device |
| CN113999661A (en) * | 2020-07-28 | 2022-02-01 | 中国石油天然气股份有限公司 | Energy-increasing blockage removing agent for improving productivity of thermal production thick oil well and preparation method and application thereof |
-
2006
- 2006-11-30 CN CNB2006101283022A patent/CN100472030C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103975039A (en) * | 2011-11-23 | 2014-08-06 | 沙特阿拉伯石油公司 | Synthetic sweet spots in tight formations by injection of nano encapsulated reactants |
| CN109594964A (en) * | 2019-01-25 | 2019-04-09 | 西安石油大油气科技有限公司 | A kind of volume increase of oil gas field with "nine squares" aerodynamic force deep penetration composite deblocking process and device |
| CN113999661A (en) * | 2020-07-28 | 2022-02-01 | 中国石油天然气股份有限公司 | Energy-increasing blockage removing agent for improving productivity of thermal production thick oil well and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN100472030C (en) | 2009-03-25 |
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Granted publication date: 20090325 Termination date: 20101130 |