利用地震資料確定油源斷裂輸導(dǎo)油氣能力及油氣富集的差異性
本文選題:地震資料 + 油源斷裂; 參考:《地球物理學(xué)進(jìn)展》2017年01期
【摘要】:為了更加準(zhǔn)確地研究油源斷裂在下生上儲(chǔ)油氣成藏中的作用,在油源斷裂類型及其特征研究的基礎(chǔ)上,通過(guò)不同油源斷裂和同一條油源斷裂不同時(shí)期和不同部位活動(dòng)特征、斷面產(chǎn)狀與油氣分布之間關(guān)系分析,對(duì)油源斷裂輸導(dǎo)油氣能力及油氣富集的差異性進(jìn)行了研究,結(jié)果表明:油源斷裂輸導(dǎo)油氣能力及油氣富集的差異性主要表現(xiàn)在以下3個(gè)方面:1不同油源斷裂同一時(shí)期的輸導(dǎo)油氣能力及油氣富集存在差異性,活動(dòng)強(qiáng)度大的油源斷裂輸導(dǎo)油氣能力強(qiáng),有利于油氣聚集,其附近油氣富集;而活動(dòng)強(qiáng)度小的油源斷裂輸導(dǎo)能力弱,不利于油氣聚集,其附近油氣不富集.2同一條油源斷裂不同時(shí)期的輸導(dǎo)油氣能力及油氣富集存在差異性,強(qiáng)活動(dòng)時(shí)期油源斷裂輸導(dǎo)油氣能力強(qiáng),有利于油氣聚集,對(duì)油氣富集所起作用越大,應(yīng)是油氣成藏的主要時(shí)期;而弱活動(dòng)時(shí)期油源斷裂輸導(dǎo)油氣能力弱,不利于油氣聚集,對(duì)油氣富集所起作用越小,不是油氣成藏的主要時(shí)期.3同一條油源斷裂不同部位的輸導(dǎo)油氣能力及油氣富集存在差異性,活動(dòng)速率大的油源斷裂凸面脊發(fā)育部位輸導(dǎo)油氣能力強(qiáng),有利于油氣聚集,是油氣成藏的有利部位;而活動(dòng)速率小的油源斷裂非凸面脊發(fā)育部位輸導(dǎo)油氣能力弱,不利于油氣聚集,不是油氣成藏的有利部位.
[Abstract]:In order to study more accurately the role of oil-source faults in the formation of oil reservoirs on the lower source, on the basis of the study of the types and characteristics of oil-source faults, the active characteristics of different oil source faults and the same oil-source faults in different periods and different parts are discussed. Based on the analysis of the relationship between fault section occurrence and oil and gas distribution, the oil and gas transport ability and the difference of oil and gas enrichment in oil-source faults are studied. The results show that the differences of oil and gas transport ability and hydrocarbon enrichment of oil-source faults are mainly manifested in the following three aspects: 1. There are differences in oil and gas transport capacity and hydrocarbon enrichment between different oil source faults at the same time. The oil-source fault with high activity intensity has strong ability of transporting oil and gas, which is favorable to oil and gas accumulation, but the oil source fault with low activity intensity is weak, which is not conducive to oil and gas accumulation. There are differences in oil and gas transport ability and hydrocarbon enrichment in different periods of the same oil source fault in the vicinity of oil and gas enrichment. Oil source fault has strong oil and gas transport ability in strong activity period, which is beneficial to oil and gas accumulation, and the effect on oil and gas enrichment is greater. It should be the main period of oil and gas accumulation, but in the weak activity period, the ability of oil source fault to transport oil and gas is weak, which is not conducive to oil and gas accumulation, and the effect on oil and gas accumulation is smaller. There are differences in oil and gas transfer ability and hydrocarbon enrichment in different parts of the same oil source fault during the main period of oil and gas accumulation. The oil source fault with high activity rate has strong oil and gas transport ability in the development area of the uplift ridge, which is conducive to oil and gas accumulation. It is a favorable position for oil and gas accumulation, and the oil source fault with low activity rate is not favorable for oil and gas accumulation because of its weak ability to transport oil and gas, which is not favorable for hydrocarbon accumulation in the development area of non-convex ridge of oil source fault.
【作者單位】: 東北石油大學(xué);
【基金】:國(guó)家自然科學(xué)基金“斷層巖水壓張裂漏油主控因素及張性破裂壓力預(yù)測(cè)”(41372154) 中國(guó)石油科技創(chuàng)新基金項(xiàng)目(2015D-5006-0103)聯(lián)合資助
【分類號(hào)】:TE86
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