天然气地球化学

歧口凹陷歧深1井气源综合对比

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  • 1. 中国矿业大学,北京 100083; 2. 中国石油勘探开发研究院廊坊分院,河北 廊坊 065007;
    3.中国石油大港油田勘探开发研究院,天津 大港 300280

收稿日期: 2009-04-08

  修回日期: 2009-04-29

  网络出版日期: 2009-06-10

基金资助

中国石油股份公司重大专项“歧口富油凹陷大油气田勘探及综合配套技术研究”(编号:2008E-030603)资助.

Gas Source of Qishen-1 Well in Qikou Sag

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  • 1.China University of Mining and Technology, Beijing 100083, China; 2. Langfang Branch, Research Institute of  Petroleum Exploration and Development, PetroChina, Langfang 065007, China; 3. Research Institute ofPetroleum Exploration & Developmen, PetroChina Dagang Oilfield Company, Tianjin 300280, China

Received date: 2009-04-08

  Revised date: 2009-04-29

  Online published: 2009-06-10

摘要

歧深1井是一口位于渤海湾盆地黄骅坳陷歧口凹陷滨海断鼻的深层探井,在4 823.0~5 088 m沙三段地层用10.32 mm油嘴日产气54 611 m3。天然气甲烷、乙烷碳同位素异常重,δ13C1值在-35.7‰~-32.7‰之间,δ13C2值在-19.1‰~-15.2‰之间。通过对该井沙三段烃源岩热解气碳同位素和轻烃的研究,并结合天然气组分、碳同位素和轻烃以及储层包裹体的特征,认为该天然气属于高成熟天然气,主要来自研究区埋深更大的沙三段烃源岩,具有多期充注的特征。证实歧口凹陷存在高成熟,甚至过成熟天然气,进一步明确歧口凹陷深层天然气勘探要以沙二段、沙三段为主要目的层。

本文引用格式

国建英, 于学敏, 李剑, 王东良, 崔会英, 李志生 . 歧口凹陷歧深1井气源综合对比[J]. 天然气地球科学, 2009 , 20(3) : 392 -399 . DOI: 10.11764/j.issn.1672-1926.2009.03.392

Abstract

Qishen 1 well is a deep exploratory well that is located in the Binhai fault nose of the Qikou sag in the Huanghua depression, Bohai Bay Basin. The well section in depth of 4 823.0~5 088 m was tested and produced 54 611 m3/d gas by a 10.32 mm nozzle tip. Carbon isotope values of the natural gas are abnormally heavy:  δ13C1 is between -35.7 ‰~-32.7 ‰,  δ13C2 is between -19.1‰~-15.2 ‰. Based on the integrated study of the carbon isotope value and light hydrocarbon composition of pyrolysis gas from the Es3 source rock, the gas composition, light hydrocarbon composition and carbon isotope value of natural gas and the characteristics of reservoir inclusions, it is considered that the natural gas of Qishen1 is a high maturity gas, mainly from the deeper Es3 source rock with several injection periods. This understanding proves the existence of high\|over mature natural gas in the Qikou sag and identifies Es2 and Es3 as the deep gas exploration prospects.

参考文献

[1]杨池银.千米桥潜山凝析气藏天然气成因分析[J].江汉石油学院学报,2004 ,26(1):35-36.
[2]吴永平,于学敏.黄骅坳陷天然气资源潜力与勘探开发对策[J].天然气地球科学,2003,14(4):235-239.
[3]张亚光, 杨子玉, 肖枚, 等.乌马营潜山天然气藏地质地球化学特征和成藏过程[J].天然气地球科学,2003,14(4):283-286.
[4]李剑,胡国艺,谢增业.中国大中型气田天然气成藏物理化学模拟研究[M].北京: 石油工业出版社, 2001:96-100.
[5]戴金星.鉴别煤成气的指标[C ]煤成气地质研究编委会主编.煤成气地质研究.北京: 石油工业出版社,1987:156-170.
[6]戴金星,裴锡古,戚厚发,等.中国天然气地质学(卷一)[M].北京: 石油工业出版社, 1996:1-288.
[7]戴金星.煤成气涵义及其划分[J].地质评论,1982,28(4):370-372.
[8]王涛.中国天然气地质理论基础与实践[M]. 北京: 石油工业出版社, 1997:50-65.
[9]秦建中,贾蓉芬,郭爱明,等.华北地区煤系烃源层油气生成·运移·评价[M ].北京: 科技出版社,2000:216-224.
[10]秦建中,梁狄刚,王东良,等.冀中石炭-二叠系煤成气与煤成油的有机地球化学特征[M ]//煤成气地质研究.北京: 石油工业出版社,1987:131-144.
[11] 杨池银. 板桥凹陷深层天然气气源对比与成因分析[J].天然气地球科学,2003,14(1):83-88.
[12]Thompson K F M. Lighthydrocarbons in subsurface sedi-ments[J]. Geochimic et Cosmochimic Acta, 1979,(43):657-672.
[13] Cramer B,Faber E, Gerling P, et  al. Reaction kinetics of stable carbon isotopes in natural gas-insights from dry, open system pyrolysis experiments[J].Energy & Fuels, 2001,15(3): 517-532.
[14] Cramer B, Krooss B M, Littke R.Modeling isotope fractionation during primary cracking of natural gas: a reaction kinetic approach[J]. Chemical Geology, 1998,149(3-4): 235-250.
[15] 帅燕华,邹艳荣,彭平安,等. 乙烷稳定碳同位素动力学模拟及地质应用[J]. 地球化学,2006,35(2):151-156.
[16] 秦勇.沉积有机质二次成烃理论及其应用[M ].北京: 地质出版社,2001:158-167.

 

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