陆相页岩层系岩心中气态烃井场测定技术初步应用及展望

贾梦瑶; 鲍云杰; 李志明; 申宝剑; 曹婷婷; 刘鹏; 杨振恒; 卢龙飞; 黎茂稳

doi:10.11781/sysydz202401183

陆相页岩层系岩心中气态烃井场测定技术初步应用及展望

doi: 10.11781/sysydz202401183

贾梦瑶^{1, 2, 3, 4,},
鲍云杰^{1, 2, 3, 4, ,},
李志明^{1, 2, 3, 4},
申宝剑^{3, 5},
曹婷婷^{1, 2, 3, 4},
刘鹏^{1, 2, 3, 4},
杨振恒^{1, 2, 3, 4},
卢龙飞^{1, 2, 3, 4},
黎茂稳^{3, 5}

1.
中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126
2.
中国石化油气成藏重点实验室, 江苏无锡 214126
3.
页岩油气富集机理与高效开发全国重点实验室, 江苏无锡 214126
4.
国家能源页岩油研发中心, 江苏无锡 214126
5.
中国石化石油勘探开发研究院, 北京 102206

基金项目:

国家自然科学基金项目 42090022

中国石化科技部项目 KLP23017

详细信息

作者简介:
贾梦瑶(1994-), 女, 硕士, 工程师, 从事页岩油气评价研究。E-mail: jiamy975.syky@sinopec.com

通讯作者:
鲍云杰(1963-), 男, 研究员, 从事测试技术与页岩油气评价研究。E-mail: baoyj.syky@sinopec.com

中图分类号: TE135
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- 文章访问数: 104
- HTML全文浏览量: 29
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- 被引次数: 0
出版历程
- 收稿日期: 2023-04-17
- 修回日期: 2023-12-17
- 刊出日期: 2024-01-28

Preliminary application and prospect of well site determination technology of gaseous hydrocarbon in continental shale cores

JIA Mengyao^{1, 2, 3, 4
,},
BAO Yunjie^{1, 2, 3, 4
, ,},
LI Zhiming^{1, 2, 3, 4},
SHEN Baojian^{3, 5},
CAO Tingting^{1, 2, 3, 4},
LIU Peng^{1, 2, 3, 4},
YANG Zhenheng^{1, 2, 3, 4},
LU Longfei^{1, 2, 3, 4},
LI Maowen^{3, 5}

1.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China
2.
SINOPEC Key Laboratory of Petroleum Accumulation Mechanisms, Wuxi, Jiangsu 214126, China
3.
State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efficient Development, Wuxi, Jiangsu 214126, China
4.
State Energy Center for Shale Oil Research and Development, Wuxi, Jiangsu 214126, China
5.
SINOPEC Petroleum Exploration & Production Research Institute, Beijing 102206, China

摘要

摘要: 陆相页岩层系的流体分析是页岩油甜点评价的重要基础，针对岩心样品中气态烃易于散失的特性和页岩油钻井现场的需求，研发了井场岩心气态烃快速采集测定装置及方法，探讨了基于岩心气态烃分析和热解含油性分析资料快速计算视气油比和估算游离油损失的方法。研究表明，该装置适用于全直径岩心和块状样品的气态烃检测，既可以实现全直径岩心在常温、常压下逸散气态烃的采集测定，也可以测定块状岩心样品的气态烃总量，气态烃检测相对误差10%，测试结果可以转换为单位质量岩样气态烃含量。全直径岩心逸散气分析可实现岩心气态烃的非破坏式采集和测定，反映了页岩层系垂向上含油气性及其非均质性的变化特征。视气油比可反映页岩层系含油气性和可流动性的趋势，视气油比越大，代表相应页岩层系页岩油可流动性越好。利用视气油比可估算岩心经历降压降温脱气过程中游离烃的损失量，在建立岩心降温降压脱气过程的热解游离烃损失恢复方法中具有较大应用潜力。岩心气态烃井场测定技术丰富了适用于井场的岩心流体分析实验技术手段和方法，为陆相页岩层系流体评价及甜点确定提供数据支撑。
- 气态烃含量 /
- 视气油比 /
- 游离油损失恢复 /
- 可流动性评价 /
- 页岩油气 /
- 陆相页岩
Abstract: Fluid analysis of continental shale formations is an important basis for the evaluation of shale oil sweet spots. In view of the characteristics that gaseous hydrocarbons in core samples are easy to lose and the needs of shale oil drilling site, a device and method for rapid collection and determination of gaseous hydrocarbons in cores at well site are developed, and a rapid method for calculating apparent gas-oil ratio (AGOR) and estimating free oil loss based on gaseous hydrocarbon analysis and pyrolysis oil content analysis data of cores is discussed. The research shows that the device is suitable for the detection of gaseous hydrocarbons in full-diameter cores and bulk samples. It can not only realize the collection and determination of gaseous hydrocarbons in full-diameter cores at normal temperature and pressure, but also determine the total amount of gaseous hydrocarbons in bulk core samples. The relative error of gaseous hydrocarbon determination is 10%, and the test results can be converted into gaseous hydrocarbon content per unit mass of rock samples. The full-diameter core escape gas analysis can realize the non-destructive collection and determination of gaseous hydrocarbons in the cores, which reflects the change characteristics of vertical oil and gas bearing and heterogeneity of shale formations. AGOR can reflect the trend of oil-gas bearing and flowability of shale formations, and the higher AGOR, the better the flowability of shale oil of corresponding shale formations. AGOR can be used to estimate the loss of free hydrocarbon in the process of pressure and temperature reduction degassing, which has great application potential in establishing the recovery method of the loss of free hydrocarbon in the process of core temperature and pressure reduction degas-sing. The core gas hydrocarbon determination technology enriches the experimental technical means and methods of core fluid analysis suitable for well sites, and provides data support for fluid evaluation and sweet spot determination of continental shale formations.
- gaseous hydrocarbon content /
- apparent gas-oil ratio /
- free oil loss recovery /
- flowability evaluation /
- shale oil and gas /
- continental shale
注释:

1) 所有作者声明不存在利益冲突。

1) 利益冲突声明/Conflict of Interests

2) 作者贡献/Authors’Contributions

2) 贾梦瑶、鲍云杰参与实验设计；贾梦瑶、鲍云杰、曹婷婷、刘鹏、杨振恒完成实验操作；贾梦瑶、鲍云杰、李志明、申宝剑、曹婷婷、刘鹏、杨振恒、卢龙飞、黎茂稳参与论文写作和修改。所有作者均阅读并同意最终稿件的提交。

HTML全文

图 1 岩心气态烃采集测定仪组成示意

Figure 1. Composition of core gaseous hydrocarbon collection and measurement instrument

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图 2 红外全烃气体检测仪及其原理

Figure 2. Infrared total hydrocarbon gas detector and schematic diagram

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图 3 渤海湾盆地沾化凹陷A1井气态烃与热解参数综合评价

YSQ为岩心出筒后放置于分段密封筒中，在常温常压下放置1 h测得的单位质量岩心的逸散气含量。

Figure 3. Comprehensive evaluation of gaseous hydrocarbon and pyrolysis parameters in well A1, Zhanhua Sag, Bohai Bay Basin

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图 4 渤海湾盆地沾化凹陷A1井气态烃与热解、油饱和指数相关关系

Figure 4. Correlation between gaseous hydrocarbon and pyrolysis and oil saturation index of well A1 in Zhanhua Sag, Bohai Bay Basin

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图 5 视气油比评价图版

Figure 5. Evaluation of apparent gas-oil ratio

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表 1 气态烃测试井基本数据

Table 1. Basic data of gas hydrocarbon test wells

井号	层位	视气油比/(cm³/g)		样品数量/ 件	热解游离油平均值/(mg/g)	压裂求产情况/ (t/d)
井号	层位	范围	平均值	样品数量/ 件	热解游离油平均值/(mg/g)	压裂求产情况/ (t/d)
苏北盆地B1井	阜二段	35~71	51	8	2.20	22
苏北盆地B2井	阜二段	9~398	58	28	2.72	30
渤海湾盆地A1井	沙河街组	14~268	74	13	2.28	150
渤海湾盆地A2井	沙河街组	11~149	53	37	4.51	求产未稳
南襄盆地C井	核三段	4~79	14	48	2.67	未求产

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表 2 渤海湾盆地A1井沙河街组游离油损失恢复数据

Table 2. Loss and recovery data of free oil in Shahejie Formation, well A1, Bohai Bay Basin

样号	气态烃总量/ (cm³/g)	游离油量/ (mg/g)	视气油比/ (cm³/g)	折算视气油比/ (cm³/cm³)	游离油损失量/ (mg/g)	恢复后游离油量/ (mg/g)	游离油损失量占比/%	油饱和度/ %	恢复后油饱和度/%	油饱和度差值/%
1	0.147	1.75	83.9	71.3	2.07	3.82	54.1	10.50	22.90	12.40
2	0.139	1.50	92.6	78.7	1.81	3.31	54.7	9.00	19.88	10.88
3	0.178	1.49	119.6	101.6	1.93	3.42	56.4	8.94	20.50	11.56
4	0.111	2.58	43.0	36.6	2.72	5.30	51.3	15.48	31.77	16.29
5	0.088	2.37	37.2	31.6	2.45	4.82	50.8	14.22	28.93	14.71
6	1.070	4.00	267.6	227.4	7.03	11.03	63.8	24.00	66.21	42.21
7	0.234	2.91	80.5	68.4	3.41	6.32	53.9	17.46	37.89	20.43
8	0.304	2.80	108.5	92.3	3.52	6.32	55.7	16.80	37.94	21.14
9	0.140	3.00	46.6	39.6	3.19	6.19	51.5	18.00	37.15	19.15
10	0.105	1.76	59.5	50.6	1.94	3.70	52.5	10.56	22.22	11.66
11	0.052	1.84	28.4	24.1	1.85	3.69	50.2	11.04	22.15	11.11

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