發(fā)布時(shí)間：2018-10-08 06:44

【摘要】：通過(guò)各類型薄片定量鑒定、巖心核磁共振測(cè)試分析、常規(guī)壓汞測(cè)試分析等現(xiàn)代分析化驗(yàn)測(cè)試手段,利用研究三水區(qū)塊的錄井、分析化驗(yàn)、取芯、測(cè)井等資料,分析該區(qū)的沉積特征、巖石學(xué)特征、儲(chǔ)層特征、物性特征、儲(chǔ)層宏觀展布特征,烴源巖條件、蓋層條件,并結(jié)合研究區(qū)構(gòu)造特征進(jìn)一步分析研究區(qū)布心組段油氣成藏主控因素,最后總結(jié)油氣富集規(guī)律。研究表明:(1)寶月地區(qū)布三段巖性以巖屑長(zhǎng)石砂巖和長(zhǎng)石巖屑砂巖為主,孔隙度為2.21～16.12%,平均10.66%,主體小于15%,滲透率0.036～595mD,平均74.35mD,主體小于50mD為低-中孔、低-中滲儲(chǔ)層,溶蝕作用、膠結(jié)作用和壓實(shí)作用是研究區(qū)主要的成巖類型。壓實(shí)作用較弱,剩余粒間孔保存較多,膠結(jié)作用相對(duì)較弱,碎屑顆粒被壓實(shí)、表面次生加大,方解石充填是成巖作用對(duì)儲(chǔ)層物性影響的主要因素;(2)油藏類型主要為常溫常壓構(gòu)造油藏,次為巖性油藏和基巖圈閉油藏。(3)有機(jī)質(zhì)類型:布心組二段以Ⅱ型為主,暗色泥巖中有機(jī)碳含量主體介于為0.7%～1.5%。氯仿瀝青“A”含量最低為0.011%,最高為0.228%,中值為0.103%�？偀N含量為17～1578mg/l,中值643mg/l,Ro值約在0.8%～1.8%之間,達(dá)到了好生油巖標(biāo)準(zhǔn),研究區(qū)寶月構(gòu)造緊鄰寶月凹陷生油巖厚值區(qū),沙頭圩區(qū)塊位于小塘凹陷生油巖厚值區(qū),烴源巖條件十分優(yōu)越。(4)生油凹陷為寶月凹陷、小塘凹陷,相應(yīng)的構(gòu)造帶內(nèi)發(fā)育較好的圈閉,烴源巖布心組二段在華涌組沉積時(shí)期已進(jìn)人生油窗,而上覆布心組三段的構(gòu)造圈閉在該時(shí)期前或同期已形成,利于捕獲油成藏。(5)①“凹中隆”構(gòu)造為油運(yùn)移、聚集成藏提供了有利指向;②構(gòu)造和儲(chǔ)層的良好匹配關(guān)系為油藏的形成提供了有利條件;③斷層側(cè)向封堵對(duì)油藏的形成起到了重要控制作用
[Abstract]:By means of modern analytical and testing means, such as quantitative identification of various types of thin slices, core nuclear magnetic resonance test and conventional mercury injection test and analysis, using logging, analysis, coring, logging and other data of Sanshui block, The sedimentary characteristics, petrological characteristics, reservoir characteristics, physical characteristics, macroscopic distribution characteristics of reservoir, source rock conditions, caprock conditions, and the main oil and gas reservoir forming control factors of Buxin formation in the study area are analyzed in combination with the structural characteristics of the study area. Finally, the law of oil and gas enrichment is summarized. The results show that: (1) the lithology of Busan formation in Baoyue area is dominated by lithic feldspathic sandstone and feldspathic sandstone. The porosity is 2.21 ~ 16.12 and the average is 10.66, the main body is less than 15, the permeability is 0.036 ~ 595mD, the average is 74.35mD. Dissolution, cementation and compaction are the main diagenetic types in the study area. The compaction is weak, the remaining intergranular pores are preserved more, the cementation is relatively weak, the clastic particles are compacted, and the surface secondary increases. Calcite filling is the main factor of diagenesis affecting reservoir physical properties, (2) the reservoir type is mainly normal temperature and atmospheric pressure reservoir, the second is lithologic reservoir and the second is bedrock trap reservoir. (3) the type of organic matter: the second stage of Buxin formation is mainly type 鈪，

本文編號(hào)：2255815