Minimizing fouling in steam assisted oil production 机翻标题: 暂无翻译,请尝试点击翻译按钮。

公开号/公开日
WO2015065894 A1 2015-05-07 [WO201565894] / 2015-05-07
申请号/申请日
2014WO-US62372 / 2014-10-27
发明人
ZHANG JINGWEI;SEABA JAMES P;
申请人
CONOCOPHILLIPS;
主分类号
IPC分类号
E21B-036/00
摘要
(WO201565894) Methods and systems generate steam for heavy oil recovery operations, wherein fouling is limited with the use of wire matrix turbulators in tubes with tendencies to foul.
机翻摘要
暂无翻译结果,您可以尝试点击头部的翻译按钮。
地址
代理人
代理机构
;
优先权号
2013US-61897517 2013-10-30 2014US-14524250 2014-10-27
主权利要求
(WO201565894) WHAT IS CLAIMED IS:   1.  A steam generator system for oil production, comprising a once through steam generator (OTSG) having:    an economizer section for pre-heating feedwater and fitted with a wire matrix turbulator; a radiant section for converting said pre-heated feedwater to steam; and    an injection system for injecting steam into an oil reservoir, wherein the economizer section, radiant section and injection system are fluidly connected.   2. The steam generator system of claim 1, wherein said wire matrix turbulator comprises a coiled wire, wherein subsequent coils are radially shifted around a central axis, and wherein all coils slant in a direction of fluid flow.   3. The steam generator system of claim 1, wherein said wire matrix turbulator comprises stainless steel wire.   4. The steam generator system of claim 1 , wherein said wherein wire matrix turbulator comprises a polymer coated wire.   5. The steam generator system of claim 1, wherein said wire matrix turbulator comprises a polymeric wire or mesh.   6. The steam generator system of claim 1, wherein said radiant section also includes the wire matrix turbulator.   7. The steam generator system of claim 1, further comprising a water and steam separator in fluid communication between the radiant section and the injection system for injecting separated steam into the oil reservoir.   8. An improved method of producing steam for heavy oil production, the method comprising heating feedwater in a once-through steam generator (OTSG) sufficiently to make steam to inject into a wellbore and use in mobilizing heavy oil, the improvement comprising outfitting tubes in said OTSG with a turbulator and thus reducing fouling in said tubes as    compared with the same OTSG lacking said turbulator.   9. The method of claim 8, further comprising preheating feedwater in an economizer of the OTSG, then further heating said feedwater in the OTSG sufficiently to make the steam, wherein the tubes with the turbulator are disposed in said economizer.   10. The method of claim 8, wherein the turbulator is a wire matrix turbulator.   11. The method of claim 8, further comprising preheating feedwater in an economizer of the OTSG, then further heating said feedwater in the OTSG sufficiently to make the steam, wherein the tubes with the turbulator that is a wire matrix turbulator are disposed in said economizer.   12. The method of claim 8, further comprising injecting the steam into the wellbore.   13. The method of claim 8, wherein the turbulator is disposed in an economizer section of the OTSG and alters fluid flow direction near the wall, thus decreasing the temperature gradient and limiting nucleate boiling and fouling.   14. The method of claim 8, wherein the turbulator is disposed in a radiant section of the OTSG to increase the heat transfer area and lead to a more uniform temperature distribution so as to minimize the risk of local burnout caused by high temperature gradients at the wall.   15.  A method of generating steam for oil production, comprising:    pre-heating feedwater in a steam generator within an economizer section fitted with a wire matrix turbulator;    converting the feedwater pre-heated in the economizer section to steam in a radiant section of the steam generator; and    injecting the steam into an oil reservoir.   16. The method of claim 15, wherein said wire matrix turbulator comprises a coiled wire, wherein subsequent coils are radially shifted around a central axis, and wherein all coils slant in a direction of fluid flow.   17. The method of claim 15, wherein said wherein wire matrix turbulator comprises a polymer coated wire.    18. The method of claim 15, wherein said wire matrix turbulator comprises a polymeric wire or mesh.   19. The method of claim 15, wherein said radiant section also includes the wire matrix turbulator.   20. The method of claim 15, further comprising separating liquid from the steam output from the radiant section prior to the injecting into the oil reservoir.
法律状态
(WO201565894) LEGAL DETAILS FOR WO2015065894  Actual or expected expiration date=2017-04-30    Legal state=ALIVE    Status=PENDING     Event publication date=2014-10-27  Event code=WO/APP  Event indicator=Pos  Event type=Examination events  Application details  Application country=WO WOUS2014062372  Application date=2014-10-27  Standardized application number=2014WO-US62372     Event publication date=2015-05-07  Event code=WO/A1  Event type=Examination events  Published application with search report  Publication country=WO  Publication number=WO2015065894  Publication stage Code=A1  Publication date=2015-05-07  Standardized publication number=WO201565894  LEGAL DETAILS FOR DESIGNATED STATE DE  Actual or expected expiration date=2016-05-02    Legal state=DEAD    Status=LAPSED   Corresponding cc:  Designated or member state=DE     Event publication date=2016-05-02  Event code=WO/NENP  Event type=Event indicating Not In Force  Non-entry into the national phase in: Corresponding cc:  Designated or member state=DE  LEGAL DETAILS FOR DESIGNATED STATE EP  Actual or expected expiration date=2016-11-23    Legal state=DEAD    Status=LAPSED   Corresponding cc:  Designated or member state=EP Corresponding appl: EP14858855    Event publication date=2015-06-17  Event code=WO/121  Event type=Designated states  EP: The EPO has been informed by wipo that ep was designated in this application Corresponding cc:  Designated or member state=EP     Event publication date=2016-11-23  Event code=WO/122  Event indicator=Neg  Event type=Event indicating Not In Force  EP: PCT  app. not ent. europ. phase EP: Pct  anm. nicht in europ. phase eing. Corresponding cc:  Designated or member state=EP
专利类型码
A1
国别省市代码
若您需要申请原文,请登录。

最新评论

暂无评论。

登录后可以发表评论

意见反馈
返回顶部