FORMATION OF H2S DURING THERMAL RECOVERY FOR VISCOUS OIL BY STEAM
Received date: 2007-07-27
Revised date: 2007-09-29
Online published: 2008-06-20
Steam soak and steam flood are popular thermal recovery techniques for viscous oil. But when they are used for production, some H2S will form for heating oil sand by steam. The formation of H2S is complex when geologic conditions and recovery methods are varied. The H2S formed during thermal recovery are secondary. Through research we think that the reasons for the formation of secondary H2S are thermal decomposition of sulfides (TDS) and thermo\|chemical sulphate reduction (TSR). Examples of thermal recovery for viscous oil abroad have proved that the quantity of H2S formed is in direct proportion to sulfur content of crude oil. Moreover, if there are sulfate ions in the layer, the high temperature will favor the TSR. In fact, the formation of H2S has something to do with both reasons above, and the reasons are connected to each other. Since H2S is harmful, something must be done to prevent H2S from forming.
Key words： Viscous oil; Steam flood; Steam soak
ZHANG Jing-yan ;ZHU Guang-you ; TIAN Jian-bo ;WEN Zhi-gang ;ZHANG Shui-chang . FORMATION OF H2S DURING THERMAL RECOVERY FOR VISCOUS OIL BY STEAM [J]. Natural Gas Geoscience, 2007 , 18(6) : 798 -802 . DOI: 10.11764/j.issn.1672-1926.2007.06.798
［1］ C & C Reservoirs. Reservoir Evaluation Report［M］.Cold Lake Area,1999;Tia Juana Field,1999;Schoonebeek Field,1998;Emeraude Field,2004.
［2］Wilhelm H E Lillie.Status of the Steam Drive Pilot in the Georgsdorf Field,Federal Republic of Germany［R］.SPE 8385,173-180.
［3］朱光有,戴金星,张水昌,等. 含硫化氢天然气的形成机制及其分布规律研究［J］.天然气地球科学,2004,15（2）：166-170.
［4］朱光有,张水昌,梁英波,等. 天然气中高含H2S的成因及其预测［J］.地质科学, 2006,41(1): 152-157.
［5］朱光有,张水昌,梁英波,等. 高含H2S天然气形成的主控因素研究［J］.天然气工业, 2006,26(增刊):8-1.
［6］朱光有,张水昌,梁英波,等. 四川盆地深部海相优质储集层的形成机理及其分布预测［J］.石油勘探与开发, 2006,33(2):161-166.
［7］胡常忠.稠油开采技术［M］.北京：石油工业出版社,1998,6:34-45.
［8］刘喜林.难动用储量开发/稠油开采技术［M］.北京：石油工业出版社,2005,11:151-162.［9］双喜岭油田齐40块蒸汽驱先导试验及扩大试验跟踪研究[R].辽河油田分公司勘探开发研究院,2005:3-6.
［10］Askinat M H.Gas evolution and change of oil composition during steam flooding of oil reservoirs[J].Pet Geology,1983,5(4):363-388.
［11］Monin J C,Audbert A.Thermal Craching of Heavy-oil/Mineral Matrix Systems[R].SPE 16269,1243-1250.
［12］Kowalewski I,Lamoureux-Var V,Lorant F. Geochemical factors controlling H2S production in petroleum reservoirs during steam injection process: TSR experimental simulation[J]. Organic Geochemistry Challenges for the 21th Century,2005，1:368-369.
［13］[KG*7/8]Hoffmann G G,Adelgunde Strohschein. Thermal recovery pr-ocesses and hydrogen sulfide formation[R].SPE 29016.
［14］朱光有,张水昌,梁英波,等.四川盆地H2S的硫同位素组成及其成因探讨[J].地球化学,2006，35(3):432-442.
［15］[JP2]Hyne J B,Greidanus J W. Aquathermolysis of heavy oil［C］//Proc 2nd Int Conf on heavy crude and rar sands.Caracas,Venezuela,1982.
［16］Lamoureux-Var V,Lorant F. H2SArtificial Formation as a Result of Steam Injection for EOR:a Compositional Kinetic Approach[R]. SPE/PS-CIM/CHOA97810.
［17］Belgrave J D M,Moore R G,Ursenbach R G. Comprehensive kinetic models for the aquathermolysis of heavy oils[J]. Journal of Canadian Petroleum Technology, 1997,36（4）:38-44.［18］朱光有,张水昌,梁英波,等.川东北地区飞仙关组高含H2S天然气TSR成因的同位素证据[J].中国科学:D辑,35(11):1037-1046.
［19］朱光有，张水昌，梁英波，等.TSR对深部碳酸盐岩储层的溶蚀改造——四川盆地深部碳酸盐岩优质储层形成的重要方式[J].岩石学报,2006,22（8）,2182-2194.
［20］朱光有,张水昌,梁英波,等.四川盆地威远气田硫化氢的成因及其证据[J].科学通报,2006,51(23):2780-2788.
［21］朱光有,张水昌,梁英波,等,四川盆地高含H2S天然气的分布与TSR成因证据[J].地质学报,2006,80（8）:1208-1217.
［22］范洪富,刘永建,钟立国. 油层矿物对蒸汽作用下稠油组成与粘度变化的影响[J]. 油田化学,2001,18（4）,299-310.
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号