高分子量烃油气化探方法的模拟实验研究——以黄海沉积物为例

涂先新; 赵红静; 李双林; 石仲

doi:10.15898/j.cnki.11-2131/td.2015.06.013

高分子量烃油气化探方法的模拟实验研究——以黄海沉积物为例

1.
长江大学油气资源与勘探技术教育部重点实验室, 湖北武汉 430100

2.
长江大学地球环境与水资源学院, 湖北武汉 430100

3.
青岛海洋地质研究所, 山东青岛 266071

基金项目: 国土资源部公益性行业科研专项(201211060-03);国家自然科学基金资助项目(41302121)

详细信息

作者简介: 涂先新, 硕士研究生, 主要从事油气地球化学的学习与研究. E-mail:tuxianxin621@foxmail.com.

通讯作者: 赵红静, 教授, 主要从事油气地球化学的教学与研究. E-mail:zhaodiana@qq.com.

中图分类号: O622.1;O657.7

收稿日期: 2014-10-30

修回日期: 2015-10-30

录用日期: 2015-11-03

刊出日期: 2015-06-25

Application of High Molecular Weight Hydrocarbon to Geochemical Exploration for Oil and Gas with a Simulated Method Using the Sediment of the Yellow Sea as an Example

1.
Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan 430100, China

2.
School of Earth Environment and Water Resources, Yangtze University, Wuhan 430100, China

3.
Qingdao Institute of Marine Geology, Qingdao 266071, China

More Information

Corresponding author: ZHAO Hong-jing, zhaodiana@qq.com

Received Date: 30 October 2014

Revised Date: 30 October 2015

Accepted Date: 03 November 2015

Publish Date: 25 June 2015

摘要

摘要:
传统上认为大分子烃类很难通过微渗漏方式逸散到地表, 但已有研究表明高分子量烃类也可以逸散到现代沉积物中。本文基于黄海现代沉积物与典型原油地球化学特征的不同, 将二者进行正交配比, 系统研究不同配比产物的组成特征。结果表明:随着配比实验中原油比例的增大, 正构烷烃和部分芳烃的色谱指纹呈现规律性变化, 其正构烷烃奇偶优势逐渐消失, 烷基芳烃丰度随之增加; 三环萜烷、藿烷、规则甾烷等化合物的绝对浓度, 以及二苯并噻吩/菲等的比值也呈现规律性变化, 其中三环帖烷、C₂₄四环萜烷/C₂₆三环萜烷和三环萜烷/藿烷三者的变化明显且平稳, 其数值范围均在0~3.0, 适合用于渗逸图版。将研究区采集的未知样品与配比产物的组成特征进行对比, 在排除外源污染的情况下可定性判识该研究区是否存在地下油气藏; 将样品的相关参数投到图版上, 有望进一步定量判识样品中渗入原油的比例。该方法可以作为常规油气化探的补充, 在油气藏评价方面提供诸多信息, 甚至在环境污染监控等领域有望获得推广。
- 高分子烃 /
- 油气化探 /
- 配比技术 /
- 色谱指纹 /
- 环境监控
Abstract:
Although traditionally it is very difficult for high molecular weight hydrocarbons micro-leaking to the surface, existing research shows that high molecular weight hydrocarbons can seep to modern surface sediments. Based on their different geochemical characteristics, modern sediments of the Yellow Sea and typical crude oil have been matched with different ratios to study the composition of each product. Results show that with the increasing proportion of oil in the matching test, the chromatographic fingerprint of n-alkanes and part of aromatic hydrocarbons show regular changes. The OEP of the n-alkanes disappear gradually and the abundance of alkyl aromatic hydrocarbons increases. The absolute concentration of the compounds, such as Tricyclic terpane, hopanes, regular steranes, and ratio of dibenzothiophene versus phenanthrene also show regular changes. Tricyclic terpane, ratio of C₂₄ tetracyclic terpane alkyl/C₂₆ tricyclic terpane and ratio of ricyclic terpanes/hopane change smoothly and obviously with a range of 0-3.0, suitable for building a leakage plate. In the case of excluding external pollution, comparison of unknown samples collected in the study area with the matched mixture can determine whether there is an oil and gas reservoir. Plotting the same indices of the unknown samples on the plate would further quantitatively identify the proportion of crude oil in the sediment sample. This method can be used as a supplement to conventional exploration for oil and gas and can give much more information about reservoir evaluation. This method can alsobe extended to the field of environmental pollution monitoring.
- polymer hydrocarbon /
- geochemical exploration for oil and gas /
- oil partition technology /
- chromatographic fingerprint /
- environment monitoring

HTML全文

图 1 不同配比沉积物中饱和烃的气相色谱图

Figure 1.

下载: 全尺寸图片幻灯片

图 2 不同配比沉积物芳烃色谱指纹变化

Figure 2.

下载: 全尺寸图片幻灯片

图 3 配比实验产物图版

Figure 3.

下载: 全尺寸图片幻灯片

表 1 不同配比比例下50 g沉积物所需原油的质量

Table 1. The quality of the crude oil for 50 g sediment under different proportioning ratio

氯仿沥青A与原油配比比例	所需原油量 (μg)	氯仿沥青A与原油配比比例	所需原油量 (μg)
90:10	1039.10	40:60	14027.90
80:20	2337.98	30:70	21821.17
70:30	4007.97	20:80	37407.72
60:40	6234.62	10:90	84167.37
50:50	9351.93

下载: 导出CSV

表 2 黄海现代沉积物与渤海湾含油气盆地原油正交配比产物指纹化合物组成

Table 2. The composition of fingerprint compound from orthogonal partition products of modern sediment in Yellow sea and the crude oil from Bohai bay basins

化合物含量/指标	氯仿沥青A与原油配比比例
化合物含量/指标	90:10	80:20	70:30	60:40	50:50	40:60	30:70	20:80	10:90
总三环萜烷(μg/g)	0.297	0.427	0.463	0.695	0.842	1.084	1.238	1.770	2.791
总藿烷(μg/g)	0.321	0.581	0.862	1.610	2.109	3.701	4.937	9.473	17.295
总规则甾烷(μg/g)	0.123	0.208	0.286	0.542	0.700	1.206	1.464	2.732	5.372
总4-甲基甾烷(μg/g)	0.007	0.012	0.018	0.042	0.057	0.099	0.106	0.195	0.433
F₂	0.294	0.287	0.276	0.275	0.271	0.269	0.268	0.263	0.261
C₂₆₊	0.138	0.141	0.230	0.240	0.240	0.300	0.314	0.419	0.435
DBT/PHEN	0.169	0.146	0.145	0.128	0.127	0.114	0.108	0.104	0.104
C₂₄Te/C₂₆TT	2.300	2.163	1.913	1.683	1.555	1.386	1.262	1.047	0.965
TT/H	0.926	0.735	0.537	0.432	0.400	0.293	0.251	0.187	0.161
OEP	1.555	1.860	2.231	1.707	1.555	1.366	1.272	1.205	1.142

下载: 导出CSV

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高分子量烃油气化探方法的模拟实验研究——以黄海沉积物为例

1. 长江大学油气资源与勘探技术教育部重点实验室, 湖北 武汉 430100 2. 长江大学地球环境与水资源学院, 湖北 武汉 430100 3. 青岛海洋地质研究所, 山东 青岛 266071

作者简介: 涂先新, 硕士研究生, 主要从事油气地球化学的学习与研究. E-mail:tuxianxin621@foxmail.com.

通讯作者: 赵红静, 教授, 主要从事油气地球化学的教学与研究. E-mail:zhaodiana@qq.com.

Application of High Molecular Weight Hydrocarbon to Geochemical Exploration for Oil and Gas with a Simulated Method Using the Sediment of the Yellow Sea as an Example

1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan 430100, China 2. School of Earth Environment and Water Resources, Yangtze University, Wuhan 430100, China 3. Qingdao Institute of Marine Geology, Qingdao 266071, China

Corresponding author: ZHAO Hong-jing, zhaodiana@qq.com

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目录

1.
长江大学油气资源与勘探技术教育部重点实验室, 湖北武汉 430100

2.
长江大学地球环境与水资源学院, 湖北武汉 430100

3.
青岛海洋地质研究所, 山东青岛 266071

1.
Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan 430100, China

2.
School of Earth Environment and Water Resources, Yangtze University, Wuhan 430100, China

3.
Qingdao Institute of Marine Geology, Qingdao 266071, China