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| 1 | 张家垛油田阜三段湖相滩坝砂储层特征显示文摘湖相滩坝砂往往毗邻烃源岩,在高源-储压差条件下易聚集成藏。近年来在我国东部新生代地层中发现了大量的此类油气藏,成为勘探的热点。以张家垛油田阜三段为例,通过岩心观察、研究滩坝砂的分布规律;利用压汞资料、铸体薄片及扫描电镜,分析不同成因储层的孔喉分布和孔隙类型组合。研究结果表明:1滩坝砂中发育3种岩相,4种岩相组合类型,对应于4种测井相;2滩坝砂具有粒度细、单层厚度小、滩坝间互、叠合连片的特征,坝砂呈土豆状平行于湖岸线展布;3坝砂以细砂岩为主,杂基含量低;原生孔隙和次生孔隙发育,粘土中富高岭石而贫绿泥石和混层粘土;滩砂以粉砂-极细砂为主,杂基含量高,孔隙结构差,次生孔隙欠发育,粘土中富混层粘土而贫高岭石和绿泥石。 | 杨鹏 丁晓琪 张哨楠 韩玫梅 刘曦翔 湛小红 张咏梅 | 2015 | 石油与天然气地质2015，36，3： | 6 |
| 2 | 张家垛油田阜三段Ⅲ砂组沉积微相特征与沉积模式显示文摘苏北盆地张家垛油田阜宁组三段发育4种岩相:黑色泥岩相,生物扰动粉砂岩相、泥质纹层+生物钻孔粉-细砂岩相及平行层理细砂岩相。剖面结构主要为向上变粗的反韵律,其次是向上变粗复变细的复合韵律,几乎不见正韵律。根据岩石相、剖面结构、测井相及粒度累计曲线,认为阜宁组三段为浅湖滩坝沉积。根据沉积特征和砂体展布规律,将储层进一步划分为坝砂和滩砂,并提出该地区的滩坝沉积模式。坝砂由于泥质含量低、储层物性好,油气充满度高;而滩砂泥质纹层理发育,非均质性弱。由于主要充填在平行层理细砂岩相和泥质纹层+生物钻孔粉砂岩相中,充注程度差别大。 | 陈倩倩 丁晓琪 万友利 张哨楠 | 2013 | 石油与天然气地质2013，34，6： | 3 |
| 3 | 流体异常高压对深层储集层物理性质的作用机理——以准噶尔盆地南缘侏罗系头屯河组为例显示文摘针对超压对深层储集层骨架颗粒物理变化的作用机制以及超压与静水压力条件下骨架颗粒物理变化的差异性问题,以准噶尔盆地南缘侏罗系头屯河组砂岩为例,开展超压对深层储集层物理性质作用机理的物理模拟实验。研究结果表明:①在模拟埋深6000~8000 m的条件下,超压环境下机械压实作用使剩余原生孔的减小值约是静水压力下的二分之一,超压可有效抑制机械压实作用,使粒间原生孔隙得以保存。②超压环境下的颗粒线状接触比例始终小于相同深度静水压力下的颗粒线状接触比例,但二者差值向深层呈现减小趋势,揭示流体异常高压抵抗有效应力增大的作用减弱,超压下机械压实程度向深层有逐渐接近静水压力下机械压实程度的趋势。③由于异常高压流体的存在,深层储集层在超压下易形成拉张裂缝,骨架颗粒内微裂缝呈细长特征,而静水压力下骨架颗粒内微裂缝呈短宽特征。④超压下骨架颗粒内微裂缝发育的主要时期晚于静水压力下,微裂缝发育程度及长度均有向更深层延伸的特点。⑤超压下骨架颗粒内微裂缝的发育期次主要受控于流体异常高压的发育期次以及作用于骨架颗粒上的有效应力大小,深层储集层超压下骨架颗粒内微裂缝发育期次多于静水压力下的发育期次,流体异常高压的多次发育对改善深层储集层的物理性质具有重要作用。 | 高志勇 崔京钢 樊小容 冯佳睿 石雨昕 罗忠 | 2023 | 石油勘探与开发2023，50，6： | 0 |
| 4 | Action mechanisms of abnormal fluid pressure on physical properties of deep reservoirs: A case study on Jurassic Toutunhe Formation in the southern margin of Junggar Basin, NW China显示文摘Considering the action mechanisms of overpressure on physical changes in skeleton particles of deep reservoir rocks and the differences in physical changes of skeleton particles under overpressure and hydrostatic pressure, the sandstone of the Jurassic Toutunhe Formation in the southern margin of Junggar Basin was taken as an example for physical modeling experiment to analyze the action mechanisms of overpressure on the physical properties of deep reservoirs. (1) In the simulated ultra-deep layer with a burial depth of 6000-8000 m, the mechanical compaction under overpressure reduces the remaining primary pores by about a half that under hydrostatic pressure. Overpressure can effectively suppress the mechanical compaction to allow the preservation of intergranular primary pores. (2) The linear contact length ratio under overpressure is always smaller than the linear contact length ratio under hydrostatic pressure at the same depth. In deep reservoirs, the difference between the mechanical compaction degree under overpressure and hydrostatic pressure shows a decreasing trend, the effect of abnormally high pressure to resist the increase of effective stress is weakened, and the degree of mechanical compaction is gradually close to that under hydrostatic pressure. (3) The microfractures in skeleton particles of deep reservoirs under overpressure are thin and long, while the microfractures in skeleton particles of deep reservoirs under hydrostatic pressure are short and wide. This difference is attributed to the probable presence of tension fractures in the rocks containing abnormally high pressure fluid. (4) The microfractures in skeleton particles under overpressure were mainly formed later than that under hydrostatic pressure, and the development degree and length of microfractures both extend deeper. (5) The development stages of microfractures under overpressure are mainly controlled by the development stages of abnormally high pressure and the magnitude of effective stress acting on the skeleton particles. Moreover, the development stages of microfractures in skeleton particles are more than those under hydrostatic pressure in deep reservoir. The multi-stage abnormally high pressure plays an important role in improving the physical properties of deep reservoirs. | GAO Zhiyong CUI Jinggang FAN Xiaorong FENG Jiarui SHI Yuxin LUO Zhong | 2023 | Petroleum Exploration and Development2023，50，6： | 0 |
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