【摘要】：通過(guò)系統(tǒng)分析四川盆地中部地區(qū)(川中地區(qū))大安寨段致密油的基本地質(zhì)特征,結(jié)合大量勘探開(kāi)發(fā)數(shù)據(jù),解剖致密油高產(chǎn)穩(wěn)產(chǎn)主控因素及勘探方向。大安寨段致密油具有如下特征:資源量大,豐度低;儲(chǔ)集層總體致密,發(fā)育相對(duì)優(yōu)質(zhì)儲(chǔ)集層;源儲(chǔ)一體(或緊鄰),油氣運(yùn)聚有利;不同類(lèi)型孔隙普遍含油,連續(xù)分布。開(kāi)發(fā)實(shí)踐揭示,致密油高產(chǎn)穩(wěn)產(chǎn)井主要分布在濱湖沉積亞相中的裂縫-孔洞型儲(chǔ)集層中,裂縫在大安寨段致密油高產(chǎn)穩(wěn)產(chǎn)影響因素中至關(guān)重要,天然氣在石油運(yùn)聚以及油井的高產(chǎn)中起到了重要驅(qū)動(dòng)(氣驅(qū))作用。結(jié)合高產(chǎn)穩(wěn)產(chǎn)特征、勘探開(kāi)發(fā)成效以及鉆井投資成本等因素綜合評(píng)價(jià)認(rèn)為,川中南部地區(qū)的大安寨段為四川盆地侏羅系致密油效益勘探開(kāi)發(fā)的現(xiàn)實(shí)領(lǐng)域。
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[Abstract]:Based on the systematic analysis of the basic geological characteristics of tight oil in the central Sichuan Basin (central Sichuan), combined with a large number of exploration and development data, the main controlling factors and exploration direction of high and stable yield of dense oil are dissected. The dense oil in Da'anzhai section has the following characteristics: large resources and low abundance; the reservoir is generally dense and relatively high quality reservoirs are developed; the source reservoir is integrated (or adjacent), and the oil and gas migration and accumulation are favorable; different types of pores are generally oil-bearing and continuously distributed. The development practice shows that the tight oil high and stable production wells are mainly distributed in the fracture-pore reservoir in the lacustrine sedimentary subphase, and the fractures are very important in the influencing factors of the high and stable production of tight oil in Da'anzhai section. Natural gas plays an important driving role in oil migration and accumulation and the high yield of oil wells. Combined with the characteristics of high and stable production, the effect of exploration and development and the cost of drilling investment, it is considered that the Da Anzhai section in central and southern Sichuan is a realistic field for the exploration and development of Jurassic tight oil in Sichuan Basin.
【作者單位】： 中國(guó)石油西南油氣田公司勘探開(kāi)發(fā)研究院;中國(guó)石油西南油氣田公司川中油氣礦;中國(guó)石油勘探開(kāi)發(fā)研究院;西南石油大學(xué);
【基金】：國(guó)家油氣重大專(zhuān)項(xiàng)“四川盆地致密油資源潛力、甜點(diǎn)區(qū)預(yù)測(cè)與關(guān)鍵技術(shù)應(yīng)用”(2016ZX05046006-008)
【分類(lèi)號(hào)】：TE34

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