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渤南洼陷北部陡坡带沙四上亚段成岩演化及其对储层物性的影响

马奔奔,  操应长,  王艳忠,  贾艳聪,  张少敏

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文章导航 > 沉积学报  > 2015 >  33(1): 170-182
马奔奔, 操应长, 王艳忠, 贾艳聪, 张少敏. 渤南洼陷北部陡坡带沙四上亚段成岩演化及其对储层物性的影响[J]. 沉积学报, 2015, 33(1): 170-182. doi: 10.14027/j.cnki.cjxb.2015.01.018
引用本文: 马奔奔, 操应长, 王艳忠, 贾艳聪, 张少敏. 渤南洼陷北部陡坡带沙四上亚段成岩演化及其对储层物性的影响[J]. 沉积学报, 2015, 33(1): 170-182. doi: 10.14027/j.cnki.cjxb.2015.01.018
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MA BenBen, CAO YingChang, WANG YanZhong, JIA YanCong, ZHANG ShaoMin. Diagenetic Evolution and Its Influence on Physical Properties of Es4s Reservoir in the Northern Steep Zone of the Bonan Sag[J]. Acta Sedimentologica Sinica, 2015, 33(1): 170-182. doi: 10.14027/j.cnki.cjxb.2015.01.018
Citation: MA BenBen, CAO YingChang, WANG YanZhong, JIA YanCong, ZHANG ShaoMin. Diagenetic Evolution and Its Influence on Physical Properties of Es4s Reservoir in the Northern Steep Zone of the Bonan Sag[J]. Acta Sedimentologica Sinica, 2015, 33(1): 170-182. doi: 10.14027/j.cnki.cjxb.2015.01.018
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渤南洼陷北部陡坡带沙四上亚段成岩演化及其对储层物性的影响

doi: 10.14027/j.cnki.cjxb.2015.01.018

  • 中国石油大学地球科学与技术学院 山东青岛 266580

基金项目: 国家油气重大专项(编号:2011ZX05006-003)、国家自然科学基金(批准号:41102058)、国家自然基金石油化工石油化工联合基金重点项目(编号:U1262203)与中国石油大学(华东)优秀博士学位论文培育计划项目(编号:LW140101A)联合资助
详细信息
    作者简介:

    马奔奔 男 1988年出生 博士研究生 储层地质学 E-mail: mabenbenupc@163.com

    通讯作者:

    操应长 男 教授 E-mail: cyc8391680@163.com

  • 中图分类号: TE122.2

Diagenetic Evolution and Its Influence on Physical Properties of Es4s Reservoir in the Northern Steep Zone of the Bonan Sag

  • School of Geosciences, China University of Petroleum, Qingdao 266580

    摘要
  • 摘要: 综合利用岩芯观察、岩石铸体薄片、流体包裹体、岩芯实测物性并结合埋藏史分析,对渤南洼陷北部陡坡带沙四上亚段砂砾岩储层的成岩演化和物性演化特征进行了研究.结果表明:储层经历了强烈压实、碳酸盐灰泥重结晶、多期胶结和溶解以及复杂交代等成岩演化过程.结合成岩环境演化特征,认为储层经历了多期酸碱交替的流体演化,在同一成岩环境演化背景下,由于近岸水下扇不同亚(微)相沉积特征差异性,控制了不同亚(微)相成岩演化特征的差异性,并决定了其物性演化的差异性.采用反演回剥的方法对地史时期近岸水下扇砂砾岩储层的物性进行了恢复,可知对储层物性演化起到重要影响的有压实作用、碳酸盐胶结、碳酸盐灰泥重结晶作用、酸性溶解及油气充注,并建立了近岸水下扇不同亚(微)相储层物性演化模式:扇根砾岩在埋藏过程中成岩作用以压实作用和灰泥杂基重结晶作用为主,溶解作用微弱,物性持续降低,在中深层灰泥杂基的重结晶作用使扇根砾岩物性快速降低,现今物性极差,主要发育干层.扇中辫状水道距泥岩层较远的储层,由于两期酸性溶解对储层的改造以及油气充注对胶结作用的抑制,中深层仍发育大量原生孔隙和次生孔隙,储层物性较好,可作为良好的油气储集层.扇中辫状水道距泥岩层较近的储层、扇中水道间和扇缘储层成岩作用以强烈胶结作用和交代作用为主要特征,现今物性差,主要发育干层.
    Abstract: Through the analysis of core observations, thin sections, measured physical properties and combined with the homogenization temperature analysis of fluid-inclusion and burial history in the nearshore subaqueous fan of the Es4s in the northern steep zone of the Bonan sag, the evolution characteristics of diagenesis and reservoir properties was studied. The results showed that, the reservoir diagenesis mainly included strong compaction, lime-mud matrix recrystallization, multi-phase of dissolution and cementation, and complicated metasomatism. The reservoirs have experienced multi-phase acidic and alkaline fluid evolution based on the characteristics of diagenetic environment. In the same diagenetic environment, the difference of sedimentary characteristics in different sub/micro-facies of nearshore subaqueous fan controls the difference of diagenetic evolution characteristics, which also determines the difference of the evolution of reservoir physical property. Based on a method of porosity's inversion and back stripping, physical properties of the reservoirs in geological history were restored, it is shown that compaction, carbonate cementation, lime-mud matrix recrystallization, acid dissolution and former hydrocarbon filling exert the most important effect on the evolution of physical properties. The evolution mode of reservoir physical properties in different sub/micro-facies of nearshore subaqueous fan have been established. The conglomerate in inner fan mainly experiences compaction and lime-mud matrix recrystallization, with weak dissolution, so the physical properties of the conglomerate in inner fan keep reducing and the lime-mud matrix recrystallization results in a rapid reduction of physical properties of the conglomerate in inner fan in middle-deep layers. The present physical property of inner fan becomes extremely poor and mainly develops dry layers. Because two stages of acid dissolution reconstruct the reservoirs and the hydrocarbon filling inhibits cementation, the reservoirs far away from mudstone layers in the braided channels of the middle fan develop a great number of primary and secondary pores, have a higher porosity and permeability, and can be effective reservoirs of hydrocarbon. The reservoirs adjacent to mudstone layers in braided channels of the middle fan, the reservoirs in interdistributaries of the middle fan and outer fan develop intensive cementation and metasomatism, therefore they have poor physical property and mainly develop dry layers.
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出版历程
  • 收稿日期:  2013-08-05
  • 修回日期:  2014-06-04
  • 刊出日期:  2015-02-10

目录

    渤南洼陷北部陡坡带沙四上亚段成岩演化及其对储层物性的影响

    doi: 10.14027/j.cnki.cjxb.2015.01.018
    • 中国石油大学地球科学与技术学院 山东青岛 266580
      • 基金项目:  国家油气重大专项(编号:2011ZX05006-003)、国家自然科学基金(批准号:41102058)、国家自然基金石油化工石油化工联合基金重点项目(编号:U1262203)与中国石油大学(华东)优秀博士学位论文培育计划项目(编号:LW140101A)联合资助
      作者简介:

      马奔奔 男 1988年出生 博士研究生 储层地质学 E-mail: mabenbenupc@163.com

      通讯作者: 操应长 男 教授 E-mail: cyc8391680@163.com
    • 收稿日期: 2013-08-05
    • 修回日期: 2014-06-04
    • 刊出日期: 2015-02-10

    • 中图分类号: TE122.2

    摘要: 综合利用岩芯观察、岩石铸体薄片、流体包裹体、岩芯实测物性并结合埋藏史分析,对渤南洼陷北部陡坡带沙四上亚段砂砾岩储层的成岩演化和物性演化特征进行了研究.结果表明:储层经历了强烈压实、碳酸盐灰泥重结晶、多期胶结和溶解以及复杂交代等成岩演化过程.结合成岩环境演化特征,认为储层经历了多期酸碱交替的流体演化,在同一成岩环境演化背景下,由于近岸水下扇不同亚(微)相沉积特征差异性,控制了不同亚(微)相成岩演化特征的差异性,并决定了其物性演化的差异性.采用反演回剥的方法对地史时期近岸水下扇砂砾岩储层的物性进行了恢复,可知对储层物性演化起到重要影响的有压实作用、碳酸盐胶结、碳酸盐灰泥重结晶作用、酸性溶解及油气充注,并建立了近岸水下扇不同亚(微)相储层物性演化模式:扇根砾岩在埋藏过程中成岩作用以压实作用和灰泥杂基重结晶作用为主,溶解作用微弱,物性持续降低,在中深层灰泥杂基的重结晶作用使扇根砾岩物性快速降低,现今物性极差,主要发育干层.扇中辫状水道距泥岩层较远的储层,由于两期酸性溶解对储层的改造以及油气充注对胶结作用的抑制,中深层仍发育大量原生孔隙和次生孔隙,储层物性较好,可作为良好的油气储集层.扇中辫状水道距泥岩层较近的储层、扇中水道间和扇缘储层成岩作用以强烈胶结作用和交代作用为主要特征,现今物性差,主要发育干层.

    English Abstract

    马奔奔, 操应长, 王艳忠, 贾艳聪, 张少敏. 渤南洼陷北部陡坡带沙四上亚段成岩演化及其对储层物性的影响[J]. 沉积学报, 2015, 33(1): 170-182. doi: 10.14027/j.cnki.cjxb.2015.01.018
    引用本文: 马奔奔, 操应长, 王艳忠, 贾艳聪, 张少敏. 渤南洼陷北部陡坡带沙四上亚段成岩演化及其对储层物性的影响[J]. 沉积学报, 2015, 33(1): 170-182. doi: 10.14027/j.cnki.cjxb.2015.01.018
    shu
    MA BenBen, CAO YingChang, WANG YanZhong, JIA YanCong, ZHANG ShaoMin. Diagenetic Evolution and Its Influence on Physical Properties of Es4s Reservoir in the Northern Steep Zone of the Bonan Sag[J]. Acta Sedimentologica Sinica, 2015, 33(1): 170-182. doi: 10.14027/j.cnki.cjxb.2015.01.018
    Citation: MA BenBen, CAO YingChang, WANG YanZhong, JIA YanCong, ZHANG ShaoMin. Diagenetic Evolution and Its Influence on Physical Properties of Es4s Reservoir in the Northern Steep Zone of the Bonan Sag[J]. Acta Sedimentologica Sinica, 2015, 33(1): 170-182. doi: 10.14027/j.cnki.cjxb.2015.01.018
    shu

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