热采过程中硫化氢成因机制

doi:10.7623/syxb201406013

石油学报 ›› 2014, Vol. 35 ›› Issue (6): 1153-1159.DOI: 10.7623/syxb201406013

热采过程中硫化氢成因机制

林日亿¹, 宋多培¹, 周广响¹, 王新伟¹, 田鑫², 杨开²

1. 中国石油大学储运与建筑工程学院山东青岛 266580;
2. 中国石油辽河油田公司金马油田开发公司辽宁盘锦 124010

收稿日期:2014-05-02 修回日期:2014-08-16 出版日期:2014-11-25 发布日期:2014-10-13
通讯作者: 林日亿,男,1973年4月生,1996年获石油大学(华东)热能工程专业学士学位,2007年获中国石油大学(华东)油气田开发工程专业博士学位,现为中国石油大学(华东)储运与建筑工程学院副教授、硕士生导师,主要从事热力采油和热能利用方面的教学和科研工作。Email:linry@upc.edu.cn
作者简介:林日亿,男,1973年4月生,1996年获石油大学(华东)热能工程专业学士学位,2007年获中国石油大学(华东)油气田开发工程专业博士学位,现为中国石油大学(华东)储运与建筑工程学院副教授、硕士生导师,主要从事热力采油和热能利用方面的教学和科研工作。Email:linry@upc.edu.cn
基金资助:
国家重大科技专项(2011ZX05017-004-HZ05)和山东省自然科学基金项目(ZR2010EL021)资助。

Hydrogen sulfide formation mechanism in the process of thermal recovery

Lin Riyi¹, Song Duopei¹, Zhou Guangxiang¹, Wang Xinwei¹, Tian Xin², Yang Kai²

1. College of Architecture＆Storage Engineering, China University of Petroleum, Shandong Qingdao 266580, China;
2. Jinma Oilfield Company, PetroChina Liaohe Oilfield Company, Liaoning Panjin 124010, China

Received:2014-05-02 Revised:2014-08-16 Online:2014-11-25 Published:2014-10-13

摘要/Abstract

摘要：

为了防范稠油油藏注蒸汽开采过程中井口产出硫化氢所造成的安全隐患,增强热采油井安全生产水平,亟需对稠油热采过程中硫化氢的来源及成因机制开展相关实验研究。对辽河小洼油田洼38区块的岩心、原油和产出水3种不同物质开展了含硫量测定、硫同位素分析和H₂S生成热模拟实验。实验研究结果表明:稠油热采中生成的硫化氢主要来源于岩心和稠油;在硫同位素分馏过程中,形成硫化物(H₂S)的δ³⁴S反映了硫酸盐热化学还原过程中硫在较高温度下的分馏特征;硫化氢的生成机理主要为高温高压酸性环境下稠油水热裂解和硫酸盐热化学还原之间的交互作用。

关键词: 热采, 硫化氢, 硫源, 硫同位素, 模拟实验, 成因机制

Abstract:

In order to prevent potential safety hazard which is caused by hydrogen sulfide(H₂S) produced from wellhead during steam injection in heavy oil reservoir, and increasing safe production level of oil well, it is necessary to carry out experimental research on the source and formation mechanism of H₂S during thermal recovery of heavy oil. This study conducted sulfur measurement, isotope analysis, and thermal simulation experiment of H₂S generation using core, crude oil, and output water samples from the Wa-38 block in Xiaowa oilfield, a heavy oil block in Liaohe oilfield, Panjin, China. During thermal recovery of heavy oil, H₂S is mainly derived from core and heavy oil. In the sulfur isotope fractionation process, the δ34S value of sulfide product (H₂S) reflects the fractional characteristics of sulfur at high temperature during thermal chemical reduction of sulfate. Regarding the formation mechanism, H₂S is mainly formed by interaction between aquathermolysis of heavy oil and thermal chemical reduction of sulfate under high-temperature, high-pressure and acidic conditions.

Key words: thermal recovery, hydrogen sulfide, sulfur origin, sulfur isotope, simulation experiment, formation mechanism

中图分类号:

TE357.4

林日亿, 宋多培, 周广响, 王新伟, 田鑫, 杨开. 热采过程中硫化氢成因机制[J]. 石油学报, 2014, 35(6): 1153-1159.

Lin Riyi, Song Duopei, Zhou Guangxiang, Wang Xinwei, Tian Xin, Yang Kai. Hydrogen sulfide formation mechanism in the process of thermal recovery[J]. ACTA PETROLEI SINICA, 2014, 35(6): 1153-1159.

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热采过程中硫化氢成因机制

Hydrogen sulfide formation mechanism in the process of thermal recovery

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