CN108018033B - 一种提高油藏内源厌氧微生物代谢活性的制剂及方法 - Google Patents
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Abstract
本发明提供了一种提高油藏内源厌氧微生物代谢活性的制剂，其由如下组分组成：Na2S·9H2O、PIPES、碳源物质、NaCl、MgCl2·6H2O、CaCl2·2H2O、NH4Cl、KH2PO4、KCl、TE284和维生素组成。本发明还提供了利用上述制剂提高油藏内源厌氧微生物代谢活性的方法。本发明显著的促进了油藏内微生物的生长代谢，从而达到激活油藏内源微生的效果，本发明可以显著的提高油藏内CH4的产量。
Description
技术领域
本发明属于微生物采油技术领域，具体涉及一种提高油藏内源厌氧微生物代谢活性的制剂及方法。
背景技术
微生物采油技术，就是利用微生物的代谢活性，来驱动原油提高开采率的一种技术方法。主要是通过微生物直接利用代谢地层中的原油，改变原油的物化性质，同时微生物在生长代谢中所产生气体、生物表面活性物质、有机酸、聚合物等物质，改变原油的物化性质和地层环境的条件，从而提高原油的采收率。在油藏这种极端的地质环境中仍存在各种类群的微生物，其中以厌氧微生物为主，但由于其环境的特殊性使得在其中的微生物的数量和代谢活性较常规环境都要低，而其中并非所有类群的微生物都有助于原油的开采，这表明提高有助于原油开采微生物菌群的代谢活性是提高微生物采用技术的核心和关键。现有方法多是主要关注特定有机物(如玉米浆干粉等)，对油藏内源微生物数量的影响，并未关注其中微生物的代谢活性的变化。
公开号为CN104087534A的中国专利提供了一种聚合物驱后油藏激活内源微生物驱油的激活剂，其主要利用玉米浆干粉作为激活剂的主要组分，该激活剂对产甲烷菌的激活具有一定的效果。此方法需要油藏中存在具有能代谢特定碳源(玉米浆干粉)的发酵性微生物，将其代谢为产甲烷菌能代谢的产甲烷前体，才能激活CH4的产生，使得此方法存在很大的局限性。
公开号为CN107100601A的中国专利提供了一种提高內源微生物驱油藏采收率的方法。不过该方法的步骤较为复杂，而且需要严格的进行分步处理，不利于工业推广使用。其在产气阶段同样利用玉米浆干粉作为产气激活剂的主要组分。
因此，本领域亟需一种可以显著提高油藏内产气微生物的代谢活性且使用方便的激活剂。
发明内容
针对现有技术的缺点，本发明的目的之一在于提供一种提高油藏内源厌氧微生物代谢活性的制剂。
本发明在此所说的内源厌氧微生物代谢活性主要为发酵性细菌和产甲烷古菌的代谢活性。
按重量份计，所述制剂由如下组分组成：
所述碳源物质包括淀、粉糖蜜、玉米粉、葡萄糖中的至少一种；
所述维生素为V284、VB12、VB1中的一种。
作为本发明的一个优选方案，所述制剂由如下组分组成：
作为本发明的一个可选方案，所述碳源物质为淀粉。
本发明的另外一个目的在于提供利用上述制剂提高油藏内源厌氧微生物代谢活性的方法，该方法包括步骤：将所述制剂加入油藏中，所述制剂的添加量为28.89～46.8g/L。
在所述油藏中，矿化度：0～40.0g/L，Na+：0～680mM，K+：0～8mM，Mg2+：0～15mM，Ca2 +：0～13mM，Cl-：0～700mM，pH值：5-9。
本发明的有益效果：
本发明显著的促进了油藏内微生物的生长代谢，从而达到激活油藏内源微生的效果，本发明可以显著的提高油藏内CO2和CH4的产量。
附图说明
图1为本发明不同试验组的产气结果图；其中，A、B、C分别为针对不同油藏样品的产气结果；
图2为本发明不同试验组的产气结果图；其中，C-1、C-2分别为C区同一采出井样的产气结果；
具体实施方式
下面通过实施例对本发明进行具体描述，有必要在此指出的是以下实施例只是用于对本发明进行进一步的说明，不能理解为对本发明保护范围的限制，该领域的技术熟练人员根据上述发明内容所做出的一些非本质的改进和调整，仍属于本发明的保护范围。
实施例1
按如下重量份关系，配置制剂(下称“激活配方”)：
其中，所述TE284的配方组成为Nitrilotroacetic acid(次氮基三乙酸)12.800g、FeC13·6H2O 1.350g、MnC12·8H2O 0.100g、CoC12·6H2O 0.024g、CaC12·H2O 0.100g、ZnC120.100g、CuC12·6H2O 0.025g、H3BO3 0.010g、Na2MoO4·2H2O 0.024g、NiC12·6H2O 0.120g和Distilled water(蒸馏水)1.0L。
所述维生素为V284，所述V284的配方组成为Biotin(生物素)4.9mg、Folic acid(叶酸)8.8mg、Pyridoxine·HCl(维生素B6)4.1mg、Thiamine·HCl(维生素B1)6.7mg、Riboflavin(维生素B2)7.5mg、Nicotinic Acid(烟酸)2.5mg、DL-Calcium pantothenate(泛酸钙)9.5mg、Vitamin B12 27.1mg、p-Aminobenzoic acid(对氨基苯甲酸)2.7mg、Lipoic acid(硫辛酸)4.1mg和Distilled water(蒸馏水)1.0L。
选用三个不同区块采油井的采出液(矿化度：4.7-12.0g/L、Na+：38-155mM、K+：0.2-0.8mM，Mg2+：0-8mM、Ca2+：1-13mM、Cl-：35-160mM、SO4 2-：0-0.5mM、NO3-：0mM、PO4 3-：0mM，pH值：5-8。)作为案例样本(A、B、C)，按上述配方的量加入样品中，参照各样品来源的地层温度(55℃、65℃、65℃)进行模拟培养，结果如图1和表3所示。
表1
在仅添加玉米粉(在本发明相应表中和图中，记为“玉米粉”)的实验中并未检测到CH4的产生，样本A添加激活配方CH4的产量、对底物的转化率和平均转化率分别是仅添加淀粉组的2倍、2倍和3倍以上，样本B和样本C仅在添加激活配方组中检测到CH4的产生，这表明激活配方的添加有效的激活油藏中本源发酵性细菌和产甲烷古菌的代谢活性。
为进一步验证激活配方的功效，对案例样本C区块同一产出井在不同时期分别采样(C-1、C-2)进行同样的模拟实验，结果如图2所示，添加激活配方实验组CH4的产量是仅添加淀粉组(在本发明相应表中和图中，记为“淀粉”)的3倍左右，对底物的转化率提高了2倍以上，平均转化率则分别提高了4倍、13倍，这表明激活配方的添加对不同时期的C区样品中微生物的代谢活性均有显著的激活效果。
Claims (4)
1.一种提高油藏内源厌氧微生物代谢活性的制剂，其特征在于，按重量份计，所述制剂由如下组分组成：
所述碳源物质为淀粉；
所述TE284的配方组成为次氮基三乙酸12.800g、FeC13·6H2O 1.350g、MnC12·8H2O0.100g、CoC12·6H2O 0.024g、CaC12·H2O 0.100g、ZnC12 0.100g、CuC12·6H2O 0.025g、H3BO3 0.010g、Na2MoO4·2H2O 0.024g、NiC12·6H2O 0.120g和蒸馏水1.0L；
所述维生素为V284，所述V284的配方组成为生物素4.9mg、叶酸8.8mg、维生素B64.1mg、维生素B1 6.7mg、维生素B2 7.5mg、烟酸2.5mg、泛酸钙9.5mg、Vitamin B1227.1mg、对氨基苯甲酸2.7mg、硫辛酸4.1mg和蒸馏水1.0L。
2.根据权利要求1所述的制剂，其特征在于，按重量份计，所述制剂由如下组分组成：
3.利用权利要求1～2任一项所述制剂提高油藏内源厌氧微生物代谢活性的方法，其特征在于，所述方法包括步骤：将所述制剂加入油藏中，所述制剂的添加量为28.89～46.8g/L。
4.根据权利要求3所述的方法，其特征在于，在所述油藏中，矿化度：0～40.0g/L，Na+：0～680mM，K+：0～8mM，Mg2+：0～15mM，Ca2+：0～13mM，Cl-：0～700mM，pH值：5-9。
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| CN102852499A (zh) * | 2012-09-28 | 2013-01-02 | 天津亿利科能源科技发展股份有限公司 | 一种定向调控油藏内源微生物驱油的方法 |
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| CN102852499A (zh) * | 2012-09-28 | 2013-01-02 | 天津亿利科能源科技发展股份有限公司 | 一种定向调控油藏内源微生物驱油的方法 |
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