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塔里木盆地有机酸来源、分布及对成岩作用的影响

蔡春芳,  梅博文,  马亭,  赵红静,  方孝林

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文章导航 > 沉积学报  > 1997 >  15(3): 103-109
蔡春芳, 梅博文, 马亭, 赵红静, 方孝林. 塔里木盆地有机酸来源、分布及对成岩作用的影响[J]. 沉积学报, 1997, 15(3): 103-109.
引用本文: 蔡春芳, 梅博文, 马亭, 赵红静, 方孝林. 塔里木盆地有机酸来源、分布及对成岩作用的影响[J]. 沉积学报, 1997, 15(3): 103-109.
shu
Cai Chunfang, Mei Bowen, Ma Ting, Zhao Hongjing, Fang Xiaolin. The Source, Distribution of Organic Acids in Oilfield Waters and Their Effects on Mineral Diagenesis in Tarim Basin[J]. Acta Sedimentologica Sinica, 1997, 15(3): 103-109.
Citation: Cai Chunfang, Mei Bowen, Ma Ting, Zhao Hongjing, Fang Xiaolin. The Source, Distribution of Organic Acids in Oilfield Waters and Their Effects on Mineral Diagenesis in Tarim Basin[J]. Acta Sedimentologica Sinica, 1997, 15(3): 103-109.
shu

塔里木盆地有机酸来源、分布及对成岩作用的影响

  • 江汉石油学院,湖北荆沙 434102

基金项目: 国家“八·五”科技攻关研究成果(课题名称:塔里木盆地油田水化学性质与储层性质,编号85-101)之一。
详细信息
    作者简介:

    蔡春芳 男 29岁 讲师 硕士 储层地质与地球化学

  • 中图分类号: P578.98

The Source, Distribution of Organic Acids in Oilfield Waters and Their Effects on Mineral Diagenesis in Tarim Basin

  • Jianghan Petroleum Institute, Jingsha 434102

    摘要
  • 摘要: 塔里木盆地寒武—第三系储层油田水实测表明：有机酸浓度高峰值分布于４３００ｍ以下及不整合面附近；来源于干酪根热成熟作用、原油微生物降解和热化学硫酸盐还原作用等；有机酸浓度多占总碱度３０%～７０%，可达９２%，对油田水的ｐＨ值影响甚大。油田水中Ａｌ浓度在含油层中可高达３.１～５.４ｍｇ/Ｌ，Ａｌ可能以有机络合物形式存在。用国际上常用的水—岩反应地化软件ＳＯＬＭＩＮＥＱ.８８，对石炭、三叠和侏罗系主要造岩矿物溶解—沉淀进行模拟，结果表明，斜长石在储层温度８１℃～１３８℃范围内均可发生溶解作用；低于１３２℃时，高岭石处于超饱和状态，可沉淀；在有机酸参与下，斜长石溶解是该区次生孔隙的主要成因。这与岩观察吻合。
    Abstract: The source, distribution and effects of organic acid anions( OAA) in sedimentary basins were notsystematically studied and were poorly understood in China. The paper presented 185 OAA data and 100samples of dissolved Al, Si, Ba and other 12 elements in oilfield waters from Cambrian to Tertiary reser-voirs of the Tarim basin. The above data showed that OAA of high concentration (> 800× 10- 6) oc-curred in reservoirs deep than 4 300 m and nearby unconformities. OAA are thought to be sourced fromthermal maturation of kerogen biodegradation and thermochemical sulfate reduction of crude oils, whichis supported by high reservoir temperature( 115 ℃ to 139 ℃ ), abundance of dissolved H 2 S in oilfield waters( 600 × 10- 6to 780 × 10- 6), and occurrence of tas mats. OAA may contribute 30 % ～ 70 %, up to 92 % oftotal alkalinity; thus it controls pH values of oilfield waters. The concentration of dissolved aluminumranges up from 3. 1 mg /L to 5. 4 mg /L in oil- bearing reservoirs, and it indicates the existence of organ-ic- complexing agents.Selected mineral equilibrium calculation from Carboniferous, Triassic and Jurassic reservoirs wascarried out by computer code SOLMINEQ. 88 for geochemical modeling of water- rock interaction, andshowed that oligioclase is unsaturated and can be dissolved at 81 ℃ to 138 ℃ while kaolinate is over- sat-urated and tends to precipitate at the temperature lower than 132 ℃; quartz is near equilibrium; K-feldspar is stable between 81 ℃ to 105 ℃. From the above, it can be concluded that oligioclase dissolu-tion and kaolinite precipitation are the main diagenesis, and control secondary porosity. And it is consis-tent with the petrographic observation.
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    • 参考文献(16)
  • [1] Crossey L J, Surdam R C and Lahann R. Application of or-ganic /inorganic diagenesis to porosity prediction, In GrautierD L. ed. Roles of Organic Matter in Sedimentary Diagenesis,SEPM Special Publications, 1986, 38: 147 ～ 155.
    [2] 蔡春芳. 沉积盆地流体— 岩石相互作用研究的现状. 地球科学进展, 1996, 11( 6): 575 ～ 579.
    [3] 蔡春芳,梅博文,马亭等. 塔里木盆地不整合面附近成岩改造体系烃— 水— 岩相互作用. 科学通报, 1995, 40( 24): 2253～2256.
    [4] Worden R H, Smalley P C and Ox toby N H. Gas Souring byThermochemical Sulfate Reduction at 140 ℃. AAPG, 1995, 79( 6): 856 ～ 863.
    [5] Machel H C.硫酸盐— 烃类成岩氧化还原反应的若干问题. 见梅博文主译. 储层地球化学. 西安: 西北大学出版社, 1991,178 ～ 195.
    [6] Krouse H R, Viau C A, Eliuk L S, et al. Chemical and iso-topic evidence of thermochemical sulphate reductiun by lighthydrocarbon gasses in deep carbonate reserv oirs. Nature,1988, 333: 415 ～ 419.
    [7] Connolly C A, Walter L M, Baadsg aard H et al. Origin andevolution of formation waters, Ablerta Basin, Western CanadaSedimentary Basin. Applied Geochemistry, 1990, 5: 375～395.
    [8] Willey L M, Kharaka Y K, Presser T S et al. Short chainaliphatic acid anions in oil field waters and their contribution tothe measured alkalinity, Geochimica et Cosmochimica Acta,1975, 39: 1707 ～ 1711.
    [9] Fisher J B and Boles J R. Water - rock interaction in Tertiarysandstones, San Joaquin basin, California, U S A:Diageneticcontrols on water composition. Chemical Geology, 1990, 32:83 ～ 101.
    [10] Bj φ rlykke K, Aagaard P, Egeberg P K et al. Geochemicalconstraints from formation water analysis from the North Seaand the Gulf Coast Basins on Quartz, ieldspar and illite precip-itation in reserv oir rocks. In Cubitt J Mand England W Aeds. The Geochemistry of Reservoirs, Geological Society Spe-cial Publication 1995, 86: 33 ～ 50.
    [11] Boles J R. Plagioclase dissolution related to oil related to oilresidence time, North Coles Lev ee field, California. AAPGBull, 1991, 75( 3): 544.
    [12] Kharaka Y K, Gunter W D, Aagg arwal P K et al.SOLM IN EQ. 88: A computer program for g eochemical model-ing of water - rock interactions. USGS Water Resources In-vest. Report 88- 4227, Menlo Park, CA, 1988, 1 ～ 120.
    [13] 朱国华,王少依,姚根顺等. 塔北轮南构造带三叠、侏罗系储层孔隙类型和深埋优质储层的成因. 见: 裘亦楠等主编《中国油气储层研究论文集》 (续一 ).北京: 石油工业出版社, 1993,240 ～ 261.
    [14] 蔡春芳,梅博文,马亭等. 塔北侏罗— 三叠系成岩反应. 石油天然气地质, 1995, 15( 3): 259 ～ 264.
    [15] 翟永红,刘生国,郭建华等. 塔中石炭系碎屑岩成岩作用与孔隙演化. 石油与天然气地质, 1995, 16( 3): 252 ～ 258.
    [16] Barth T and Bj φ rlykke U K. Organic acids from source rockmaturation: generation potentials transpo rt mechanisms andrelevance for mineral diagenesis. Applied Geochemistry,1993, 8: 325 ～ 337.
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  • 收稿日期:  1995-11-28

目录

    塔里木盆地有机酸来源、分布及对成岩作用的影响

    • 江汉石油学院,湖北荆沙 434102
      • 基金项目:  国家“八·五”科技攻关研究成果(课题名称:塔里木盆地油田水化学性质与储层性质,编号85-101)之一。
      作者简介:

      蔡春芳 男 29岁 讲师 硕士 储层地质与地球化学

    • 收稿日期: 1995-11-28

    • 中图分类号: P578.98

    摘要: 塔里木盆地寒武—第三系储层油田水实测表明：有机酸浓度高峰值分布于４３００ｍ以下及不整合面附近；来源于干酪根热成熟作用、原油微生物降解和热化学硫酸盐还原作用等；有机酸浓度多占总碱度３０%～７０%，可达９２%，对油田水的ｐＨ值影响甚大。油田水中Ａｌ浓度在含油层中可高达３.１～５.４ｍｇ/Ｌ，Ａｌ可能以有机络合物形式存在。用国际上常用的水—岩反应地化软件ＳＯＬＭＩＮＥＱ.８８，对石炭、三叠和侏罗系主要造岩矿物溶解—沉淀进行模拟，结果表明，斜长石在储层温度８１℃～１３８℃范围内均可发生溶解作用；低于１３２℃时，高岭石处于超饱和状态，可沉淀；在有机酸参与下，斜长石溶解是该区次生孔隙的主要成因。这与岩观察吻合。

    English Abstract

    蔡春芳, 梅博文, 马亭, 赵红静, 方孝林. 塔里木盆地有机酸来源、分布及对成岩作用的影响[J]. 沉积学报, 1997, 15(3): 103-109.
    引用本文: 蔡春芳, 梅博文, 马亭, 赵红静, 方孝林. 塔里木盆地有机酸来源、分布及对成岩作用的影响[J]. 沉积学报, 1997, 15(3): 103-109.
    shu
    Cai Chunfang, Mei Bowen, Ma Ting, Zhao Hongjing, Fang Xiaolin. The Source, Distribution of Organic Acids in Oilfield Waters and Their Effects on Mineral Diagenesis in Tarim Basin[J]. Acta Sedimentologica Sinica, 1997, 15(3): 103-109.
    Citation: Cai Chunfang, Mei Bowen, Ma Ting, Zhao Hongjing, Fang Xiaolin. The Source, Distribution of Organic Acids in Oilfield Waters and Their Effects on Mineral Diagenesis in Tarim Basin[J]. Acta Sedimentologica Sinica, 1997, 15(3): 103-109.
    shu

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