本源微生物激活/调驱复合体系先导试验研究  

Technologic Improvements and Field Pilot Results of Simultaneous Indigenous Bacteria Activation and Indepth Profile Modification at Dagang Oil Field

作　　者：柳敏[1] 程海鹰[1] 冯庆贤[1] 闫云贵[1] 汪娟娟[1] 梁建春[1] 李晓利[2] 

机构地区：[1]中国石油大港油田分公司采油工艺研究院,天津300280 [2]中国石油大港油田分公司勘探开发研究院,天津300280

出　　处：《油田化学》2010年第1期96-99,54,共5页Oilfield Chemistry

摘　　要：所报道的复合体系中,本源菌激活/调驱剂由好氧、厌氧菌激活物和吸水膨胀颗粒按3∶1∶1质量比组成,含有淀粉56.0%、蛋白质13.0%、纤维素10.5%、矿物质5.3%、脂肪4.2%,另外加有聚合物作为固体颗粒悬浮剂。注入复合体系后随即注入空气激活好氧菌。先导试验在有5口油井、含水平均94.1%的羊丛14井组实施两轮,在有6口油井、含水40.7%～95.0%的港西42-6-1井组实施一轮。通过羊丛14井组第一轮试验,根据注入压力将激活/调驱剂浓度由30g/L提高至50g/L,将聚合物浓度由0.4g/L提高至1.0g/L;根据3口油井菌数变化并考虑化学需氧量,将按激活半径1.5m、孔隙中气液比3∶1计算的注入空气量920m3大幅提高至7000m3;注空气工艺由双段塞式改为五段塞式,每月注一次,每次1400m3,共注5次。激活/调驱施工后注水压力上升,油井产出水中FMB、HDB菌数增加,SRB菌数减少,一些油井产油量增加,港西42-6-1井组试验有经济效益。一部分油井未见效果的原因有待深入研究。In the combinational flooding fluid（CFF） for simultaneously activating indigenous bacteria and modifying indepth profile,the activation/profile modification agent（APMA） comprised aerobic and anaerobic bacteria activating substances and swellable particulated solids in mass ratio 3：1：1 and contained 56.0% starch,13.0% protein,10.5% cellulose,5.3% minerals,and 4.2% fat and an HPAM polymer was used as particulated solids suspending agent. The CFF injected was followed by air in several slugs for growth of aerobic bacteria. Field pilots were conducted at the well group Yangcong-14 covering 5 production wells of watercut 94.1% in average in 2 cycles and at the well group Gangxi-42-6-1 covering 6 production wells of watercut in average 40.7—95.0% in 1 cycle. In the course of the first cycle of the pilot at Yangcong-14,the concentration of APMA was raised from 30 to 50 g/L and of polymer——from 0.4 to 1.0 g/L according to the changes in injection pressure;the volume of air injected was raised dramatically from 920 m^3,a value calculated from activating radius 1.5 m and air to solution ratio in reservoir pores 3：1,to 7000 m^3 according to the bacterial population in 3 production wells and with the chemical oxygen demand taken into consideration;instead of a two slug process the air injection was conducted by a five slug process：once a month in duration of 5 months with slug size 1400 m^3. Some positive responses were observed to these pilots：raise of water injection pressure;increase in bacterial population of FMB and HDB and decrease in bacterial population of SRB in produced water;and increase of oil output from some production wells;the Gangxi-42-6-1 pilot was profitable economically. The reasons for absence of positive responses in other production wells needed more deep and detailed research.

关 键 词：本源微生物驱油 深部调剖 微生物激活剂/调剖剂 复合体系 组成与配方 注空气 注入工艺 先导试验 大港油田 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程] TE357.9