MATURITY STUDY OF THE STRONG BIODEGRADATION VISCOUS OIL：TAKING THE SANTAI-BEISANTAI AREA OF JUNGGAR BASIN AS AN EXAMPLE
-
摘要: 严重生物降解作用形成的稠油轻重组分均遭损失,其演化阶段性判识是油气成因研究的一个难题。该文以准噶尔盆地三台—北三台地区为例,在前人研究的基础上,进一步对Ts/Tm对成熟度的敏感性进行了分析,认为在同源条件下,Ts/Tm能有效的随成熟度增大而增大,且抗生物降解能力强,可以用来对严重生物降解原油成熟度进行判识。文章以此为指标指出三台—北三台地区重质稠油和储层沥青主要是低—未成熟阶段的原油并遭严重生物降解所致,中质稠油主要是成熟阶段原油遭中等生物降解或散失所致。Abstract: When the oil is suffered from strong biodegradation,most hydrocarbon component(including sterane) is loss,and the common maturity parameters can hardly play their roles.So,how to distinguish the maturity of the strong biodegradation oil is one of the research puzzles.Based the previous research,this paper takes the Santai-Beisantai area of the Junggar Basin for example,analyses the dependability of Ts/Tm.It is pointed out that Ts/Tm increases with maturity and is hard to be biodegraded,and can be used to distinguish the maturity of different type of crude oil.The bitumen and heavy oil derived from the result that the crude oil at low evolutionary stage suffered from loss and strong biode-gradation.The medium density oil comes from the result that oil at mature evolutionary stage suffered from loss and moderate biodegradation.
-
Key words:
- biodegradation /
- reservoir bitumen /
- maturity of crude oil /
- Ts/Tm Santai-Beisantai region /
- Junggar Basin /
-
[1] BLANC P,CONNAN J.Origin and occurrence of 25-norhopanes:a statistical study[J].Org Geochem,1992,18(6):813-828. [2] 王顺玉,王廷栋.气侵对油气分布规律的影响[J].天然气工业,1998,18(5):91-93. [3] 李建新,杨斌,何丽箐,等. 准噶尔盆地西北缘稠油成因和早期成烃机制的探讨[J].新疆石油地质,1993,14(3):239-249. [4] BAILEY N J L,KROUSE H R,EVANS C R.Alteration of crude oils by waters and bacteria:Evidence from Geochemical and isotope studies[J].AAPG Bull,1973,57(7):1276-1290. [5] LAFARGUE E,THIEZ P L.Effect of water washing on light ends compositional heterogeneity[J].Org Geochem,1996,24(12):1141-1150. [6] KUO LUNGCHUAN.An experimental study of crude oil alteration in reservoir rocks by water washing[J].Org Geochem,1994,21(5):465-479. [7] HEAD I M,JONES D M,LARTER,S R.Biological activity in the deep subsurface and the origin of heavy oil[J].Nature,2003,426:344-352. [8] 张渠,宋晓莹,张志荣.原油中甾烷的生物降解模拟实验研究[J].石油实验地质,2007,29(1):99-103. [9] 袁莉,包建平.生物降解作用对原油中烷基萘分布与组成特征的影响[J].石油实验地质,2009,31(5):512-515. [10] 倪春华,包建平,顾忆.生物降解作用对芳烃生物标志物参数的影响研究[J].石油实验地质,2008,30(4):386-389. [11] PETERS K E,MOLDOWAN J M.The biomarker guide:interpreting molecular fossils in petroleum and ancient sediments[M].New Jersey:Prentice Hall,1993:110-265. [12] PHILIPPI C T.The deep subsurface temperature controlled origin of the gaseous and gasoline-range hydrocarbons of petroleum[J].Geochim Cosmochim Acta,1975,39:1353-1373. [13] THOMPSON K F M.Light hydrocarbons in subsurface sediments[J].Geochim Cosmochim Acta,1979,43:657-672. -
计量
- 文章访问数: 2084
- HTML全文浏览量: 115
- PDF下载量: 1291
- 被引次数: 0
下载:
苏公网安备32021102000780号