本文選題：旅大構(gòu)造 + 沉火山碎屑巖��； 參考：《大慶石油地質(zhì)與開(kāi)發(fā)》2017年06期

【摘要】：渤海海域旅大16構(gòu)造沙三段沉火山碎屑巖儲(chǔ)層受火山碎屑物質(zhì)和沉積作用雙重控制,但優(yōu)質(zhì)儲(chǔ)層形成機(jī)理尚不清楚。綜合應(yīng)用井壁取心、鑄體薄片、測(cè)井曲線(xiàn)等資料,對(duì)沉火山碎屑巖儲(chǔ)層致密成因及相對(duì)高滲儲(chǔ)層主控因素進(jìn)行了研究。結(jié)果表明:臨近物源區(qū)的儲(chǔ)層巖石成分成熟度和結(jié)構(gòu)成熟度較低,成巖過(guò)程中形成大量搭橋狀伊利石充填了孔隙,富鐵、鎂的安山巖巖屑蝕變析出細(xì)小黃鐵礦晶簇,呈星散狀密集分布在粒間,儲(chǔ)層中毛管束縛水含量高是儲(chǔ)層致密的主要成因;沉積期風(fēng)化淋濾作用及后期成巖作用形成的高嶺石對(duì)儲(chǔ)層起到支撐和保護(hù)作用,酸性火山巖巖屑在埋藏過(guò)程中生成大量環(huán)顆粒分布的雛晶石英,能夠起到抗壓實(shí)和抑制伊利石生長(zhǎng)的作用,酸性火山巖巖屑相對(duì)易溶蝕而形成次生孔隙,是局部相對(duì)高滲儲(chǔ)層的主要成因。
[Abstract]:The sedimentary pyroclastic rock reservoir of the third member of structure Sha 3 of Lida 16 in Bohai Sea is controlled by pyroclastic material and sedimentation, but the formation mechanism of high quality reservoir is not clear. Based on the well wall coring, casting thin sheet and logging curves, the compactness origin of sedimentary pyroclastic reservoir and the main controlling factors of relatively high permeability reservoir are studied. The results show that the rock composition maturity and structure maturity are low in the adjacent source area, and a large number of bridging Illite fill the pores during the diagenesis process, and fine pyrite clusters are precipitated from the lithic alteration of the rocks rich in iron and magnesium. The formation of reservoir is mainly caused by high capillary irreducible water content, and the kaolinite formed by weathering and leaching and late diagenesis plays a supporting and protective role on the reservoir. In the process of burial, acid volcanic cuttings produce a large number of crystal crystals with ring particle distribution, which can resist compaction and inhibit the growth of Illite. The acid volcanic debris is relatively easy to dissolve and form secondary pores. It is the main cause of formation of local relatively high permeability reservoir.
【作者單位】： 中海石油有限公司天津分公司;
【基金】：國(guó)家科技重大專(zhuān)項(xiàng)“近海隱蔽油氣藏勘探技術(shù)”(2011ZX05023-002) 中海油重大科技項(xiàng)目“中國(guó)近海低孔低滲油氣藏勘探開(kāi)發(fā)關(guān)鍵技術(shù)與實(shí)踐”(CNOOC-KJ 125 ZDXM 07 LTD-TJ-02)
【分類(lèi)號(hào)】：P618.13

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本文編號(hào)：1982757