發(fā)布時(shí)間：2019-03-05 21:04

【摘要】：以江西省富有機(jī)質(zhì)頁(yè)巖層系為研究對(duì)象,采用文獻(xiàn)調(diào)研—野外地質(zhì)調(diào)查—實(shí)驗(yàn)測(cè)試—軟件模擬—理論研究系統(tǒng)方法,以富有機(jī)質(zhì)頁(yè)巖層系構(gòu)造埋藏史和保存富集為核心科學(xué)問(wèn)題,在各區(qū)域的構(gòu)造演化史恢復(fù)的基礎(chǔ)上,恢復(fù)各富有機(jī)質(zhì)頁(yè)巖層系埋藏史,進(jìn)一步研究埋藏—受熱—成熟—生烴的配置關(guān)系及頁(yè)巖氣保存條件,探索江西省頁(yè)巖氣的富集模式,優(yōu)選富集有利區(qū)。研究結(jié)果表明:富有機(jī)質(zhì)頁(yè)巖層系形成過(guò)程中受晉寧、加里東、海西、印支等多期構(gòu)造運(yùn)動(dòng)影響,形成多個(gè)構(gòu)造旋回;除贛西北區(qū)埋藏史屬“早降晚抬”型外,贛東北區(qū)和萍樂(lè)坳陷區(qū)埋藏史均屬“早抬晚降”型,經(jīng)歷多次沉降—抬升階段,最大埋深均出現(xiàn)于喜馬拉雅期;生烴過(guò)程中存在多次生烴過(guò)程,除贛西北寒武系頁(yè)巖生烴高峰位于志留紀(jì)末期,其他頁(yè)巖層系的生烴高峰均位于侏羅紀(jì)—古近紀(jì)之間,生烴過(guò)后均伴有不同程度的構(gòu)造抬升。研究區(qū)內(nèi)頁(yè)巖具有較好的自封閉性,除梨樹(shù)窩組和安源組頂?shù)装宸忾]性相對(duì)較低外,皮園村組、王音鋪組、觀音堂組、荷塘組、樂(lè)平組、小江邊組均具有較好的頂?shù)装宸獯鏃l件。區(qū)內(nèi)修武復(fù)向斜、九瑞復(fù)向斜、北部向斜、中部向斜及萍樂(lè)坳陷東段斷層發(fā)育較少,保存條件較好�；诼癫亍鸁N配置關(guān)系,考慮保存條件,總結(jié)出江西省頁(yè)巖氣富集模式,認(rèn)為頁(yè)巖氣富集成藏經(jīng)歷了源—蓋沉積期、初始富集期、持續(xù)富集期(動(dòng)蕩富集期)和保存定型期四個(gè)階段,以保存定型期控制作用為主。將省內(nèi)保存富集有利區(qū)劃分為5類(lèi),并在全省范圍內(nèi)優(yōu)選出修武復(fù)向斜、九瑞復(fù)向斜、中部復(fù)向斜等9個(gè)富集有利區(qū)。
[Abstract]:Taking the organic shale stratigraphy of Jiangxi Province as the research object, this paper adopts the systematic method of literature investigation, field geological investigation, experimental test, software simulation and theoretical research. Taking the history of structural burial and preservation and enrichment of rich organic shale series as the core scientific problems, on the basis of the restoration of tectonic evolution history in various regions, the burial history of rich organic shale strata is restored. The distribution relationship between burial, heating, maturity and hydrocarbon generation and the conditions of shale gas preservation were further studied, and the enrichment model of shale gas in Jiangxi Province was explored, and the favorable areas for enrichment were optimized. The results show that the formation process of rich organic shale strata is influenced by the multi-stage tectonic movements, such as Jinning, Caledonian, Hercynian, Indosinian and so on, resulting in the formation of multiple tectonic cycles. Except that the burial history of northwest Jiangxi belongs to "early fall and late lift" type, the buried history of northeast Jiangxi and Pingle depression all belong to "early lift and late fall" type, which has experienced many subsidence-uplift stages, and the maximum buried depth has occurred in the Himalayan period. The hydrocarbon generation peak of Cambrian shale in northwest Jiangxi is located at the end of Silurian period, the hydrocarbon generation peak of other shale strata is between Jurassic and Paleogene, and the hydrocarbon generation is accompanied by different degrees of tectonic uplift after hydrocarbon generation. Besides Lishuwo formation and Anyuan formation, the sealing ability of roof and floor is relatively low, Piyuancun formation, Wangyingpu Group, Guanyintang Group, Hetang Group, Leping Group, etc, have good self-sealing property in the study area, except that Lishuwo formation and Anyuan formation are relatively low. Xiaojiang edge group all have better conditions of top and floor sealing. The faults of Xiu Wufu syncline, Jiurui complex syncline, northern syncline, central syncline and eastern Pingle depression are less developed in this area, and the preservation conditions are better. Based on the relationship between burial and hydrocarbon generation and considering the preservation conditions, this paper summarizes the shale gas enrichment model in Jiangxi Province, and considers that the shale gas rich integrated reservoir has experienced the source-cap sedimentary period and the initial enrichment period. There are four stages of continuous enrichment period (volatile enrichment period) and preservation stereotype period, which are mainly controlled by preservation pattern period. The favorable areas for preservation and enrichment in the province are divided into 5 types, and nine enrichment favorable areas, such as Xiu Wu complex syncline, Jiurui complex syncline and central one, are selected in the whole province.
【學(xué)位授予單位】：中國(guó)礦業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P618.13

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