本文選題：渤東地區(qū)　切入點(diǎn)：遠(yuǎn)源　出處：《成都理工大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年04期

【摘要】：利用渤東地區(qū)豐富的鉆探資料,開展油氣橫向與垂向運(yùn)移路徑研究,總結(jié)遠(yuǎn)源型凸起區(qū)和斜坡帶的油氣運(yùn)聚規(guī)律。研究表明,潛山不整合面和館陶組底部區(qū)域砂巖是輸導(dǎo)脊的2種通道類型。輸導(dǎo)脊是淺層新近系油氣富集的基礎(chǔ),它與斷層耦合程度控制淺層油氣運(yùn)移。根據(jù)輸導(dǎo)脊上圈閉與斷層的接觸方式,"脊-斷"耦合關(guān)系分為接觸式和非接觸式,接觸式進(jìn)一步細(xì)分為控圈式和非控圈式。只有接觸式的"脊-斷"耦合關(guān)系才利于淺層油氣運(yùn)移,其中控圈式的接觸關(guān)系淺層運(yùn)移條件最優(yōu)越。綜合考慮輸導(dǎo)脊規(guī)模及其與有效烴源巖的接觸范圍、輸導(dǎo)脊上圈閉面積及其與有效烴源巖之間的壓差等參數(shù),構(gòu)建的輸導(dǎo)脊油氣運(yùn)聚系數(shù)可以較好地反映輸導(dǎo)脊的運(yùn)聚能力。油氣富集層系受斷層活動(dòng)強(qiáng)度與區(qū)域蓋層厚度綜合控制,利用斷蓋比參數(shù)可以定量判斷,斷蓋比值0.25和1分別是深層?xùn)|營組、淺層明下段底部區(qū)域蓋層遮擋的臨界值。輸導(dǎo)脊分布的區(qū)域是遠(yuǎn)源油氣勘探的重要區(qū)帶,"脊-斷"耦合好的構(gòu)造是淺層有利勘探目標(biāo)。
[Abstract]:Based on the abundant drilling data in Bodong area, the transversal and vertical migration paths of oil and gas are studied, and the oil and gas migration and accumulation laws in remote uplift and slope zone are summarized.The results show that the unconformable surface of buried hill and the sandstone at the bottom of Guantao formation are two channel types of transport ridges.The transport ridge is the basis of hydrocarbon accumulation in the shallow Neogene, and its coupling with faults controls the shallow hydrocarbon migration.According to the contact mode between trap and fault on the transport ridge, the "ridge-fault" coupling relationship can be divided into contact type and non-contact type, and the contact type is further subdivided into the control loop type and the non-controlled ring type.Only the contact "ridge-fault" coupling relationship is propitious to shallow oil and gas migration.Considering the parameters such as the scale of the transport ridge and its contact with the effective source rock, the trap area on the transport ridge and the pressure difference between the transport ridge and the effective source rock, the oil and gas migration and accumulation coefficient of the transport ridge can reflect the migration and accumulation ability of the transport ridge.The oil-gas enriched strata are controlled by the fault activity intensity and the thickness of the regional caprock. The ratio of fault-cap ratio 0.25 and 1 is the critical value of the cover cover of the deep Dongying formation and the bottom of the lower part of the shallow layer, respectively, using the parameters of the fault-cap ratio.The distribution of the transport ridges is an important zone in the exploration of distant oil and gas, and the well-coupled structure of ridge-fault is the favorable exploration target for shallow strata.
【作者單位】： 中海石油(中國)有限公司天津分公司渤海石油研究院;
【基金】：“十二五”國家科技重大專項(xiàng)(2011ZX05023-001,2011ZX05023-002,2011ZX05023-006)
【分類號】：P618.13

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