绥中36-1油田A油藏生物竞争排斥技术治理下H_(2)S主控因素及机理研究  

Study on the main controlling factors and mechanism of H_(2)S under the bio-competitive exclusion technology in reservoir A of Suizhong 36-1 oilfield

作　　者：付云 宁永庚 杜君 张伟森 陆原 罗厚勇 杜予歆 Fu Yun;Ning Yonggeng;Du Jun;Zhang Weisen;Lu Yuan;Luo Houyong;Du Yuxin(Cnooc Energy Development Co.,Ltd.Engineering Technology Branch,Tianjin,China;Liaodong Operating Company,Tianjin Branch of Cnooc(China)Co.,Ltd.,Tianjin,China;CenerTech Oilfield Chemical Co.,Ltd.,Tianjin,China;Department of Geology,Northwestern University,Xi'an,Shaanxi,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司 [2]中海石油(中国)有限公司天津分公司辽东作业公司 [3]中海油(天津)油田化工有限公司 [4]西北大学地质学系

出　　处：《石油与天然气化工》2022年第6期91-96,103,共7页Chemical engineering of oil & gas

基　　金：国家自然科学基金“TSR相关黄铁矿Re-Os同位素年龄及油气地质意义”(42172173)。

摘　　要：目的绥中36-1油田A油藏采用生物竞争排斥技术治理因注入海水引入硫酸盐还原菌(SRB)而产生的H_(2)S,以油藏为研究对象,进行了H_(2)S生长主控因素和机理研究。方法选取油藏典型油井考查其停药期间不同油井的H_(2)S含量、硫化物含量、微生物含量,观察SRB生长曲线规律,对H_(2)S生长主控因素和机理进行研究。结果生物竞争排斥法能够抑制SRB生长,单井H_(2)S质量浓度降至30 mg/m^(3)以下。停药期间,油藏H_(2)S生长趋势符合Compertz模型,单井A1、A4、A17、A20、A22模型拟合度在0.8以上,方差的统计量较高,显著性为0.001~0.002。结论H_(2)S不受油藏生产动态的控制,海水提供了丰富的SO_(4)^(2-)营养源,绥中36-1油田A油藏H_(2)S生长的主控因素为油藏中的SO_(4)^(2-)含量。该油藏已经形成了非常稳定的生态菌群,稳定的生态系统能自动消除外部引入的硫酸盐,从而系统地控制H_(2)S的生长。Objective In Suizhong 36-1 reservoir A,bio-competitive exclusion technology was used to treat hydrogen sulfide produced by sulfate-reducing bacteria introduced by seawater injection.Taking the reservoir as the research object,the main controlling factors and mechanism of H_(2)S growth are studied.Methods The typical oil wells in the reservoir were selected to investigate the hydrogen sulfide content,sulfide content and microbial content of different oil wells during the withdrawal period.The growth curve of SRB was observed,and the main controlling factors and mechanism of H_(2)S growth were studied.Results The bio-competitive exclusion method could inhibit the growth of SRB and the H_(2)S concentration of all single wells was reduced to below 30 mg/m^(3).During the drug withdrawal period,the growth trend of H_(2)S in the reservoir conformed to the Compertz model.The single well A01,A04,A17,A20,and A22 models had a fitting degree above 0.8,and statistics of variancethe was high,and the significance was between 0.001 and 0.002.Conclusion H_(2)S is not controlled by reservoir production dynamics,seawater provides a rich source of sulfate nutrients,and the main controlling factor for H_(2)S growth in reservoir A of Suizhong 36-1 oilfield is the sulfate ion content in the reservoir.The reservoir has formed a very stable ecological flora,and the stable ecosystem can automatically eliminate the sulfate introduced from the outside,thereby systematically controlling the growth of H_(2)S.

关 键 词：H_(2)S SRB 生长曲线 生物竞争排斥法 主控因素 

分 类 号：TE5[石油与天然气工程—油气田开发工程]