Hydrogen sulfide formation mechanism in the process of thermal recovery

被引：0

作者：

Lin, Riyi ^{[1
]}

Song, Duopei ^{[1
]}

Zhou, Guangxiang ^{[1
]}

Wang, Xinwei ^{[1
]}

Tian, Xin ^{[2
]}

Yang, Kai ^{[2
]}

机构：

[1] College of Architecture & Storage Engineering, China University of Petroleum, Qingdao , 266580, Shandong

[2] Jinma Oilfield Company, PetroChina Liaohe Oilfield Company, Panjin , 124010, Liaoning

来源：

Shiyou Xuebao/Acta Petrolei Sinica | 2014年 / 35卷 / 06期

关键词：

Formation mechanism; Hydrogen sulfide; Simulation experiment; Sulfur isotope; Sulfur origin; Thermal recovery;

D O I：

10.7623/syxb201406013

中图分类号：

学科分类号：

摘要：

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. ©, 2014, Science Press. All right reserved.

引用

页码：1153 / 1159

页数：6

共 20 条

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