【摘要】：本文通過對川西北地區(qū)下二疊統(tǒng)棲霞組的鉆井資料、巖心資料、野外露頭資料、薄片資料、地球化學(xué)測試資料及前人研究成果,以沉積巖石學(xué)、構(gòu)造地質(zhì)學(xué)及儲層沉積學(xué)為理論指導(dǎo),對川西北地區(qū)棲霞組地層和沉積相特征、儲層特征及儲層發(fā)育成因機(jī)理進(jìn)行了一系列研究,總結(jié)出了棲霞組白云巖儲層的儲層基本特征、成巖作用及儲層成因機(jī)理。 本次工作主要取得了以下幾點(diǎn)認(rèn)識：(1)根據(jù)巖性組合、電性和旋回特征,將棲霞組自下而上劃分為棲一段和棲二段,棲一段又分為棲一A亞段、棲一B亞段；地層整體分布穩(wěn)定,有向北逐漸變薄的趨勢,以發(fā)育開闊一半局限臺地相的臺內(nèi)灘、障壁灘相沉積為特征,障壁灘主要受龍門山島鏈遠(yuǎn)帶微地貌高地控制,臺內(nèi)灘可能是受臺地內(nèi)部局部構(gòu)造高地貌以及同沉積斷裂上升盤的控制；(2)通過巖樣觀察、薄片鑒定及測試資料分析,棲霞組儲集巖可劃分為中-粗晶云巖和殘余顆粒云巖,儲集空間以離解碳酸鹽巖砂間溶孔、晶間(溶)孔和充填殘余溶洞、縫為主,基巖白云石化后形成的白云巖儲集空間受控于原巖的儲集面貌,儲層類型為裂縫孔洞型；(3)棲霞組共經(jīng)歷了壓實作用、膠結(jié)作用等破壞性成巖作用,準(zhǔn)同生期層控型風(fēng)化殼巖溶作用、混合熱液白云石化作用、埋藏溶蝕作用等建設(shè)性成巖作用；(4)儲層發(fā)育受高能顆粒灘相控制明顯,準(zhǔn)同生期層控型風(fēng)化殼巖溶是儲層優(yōu)化的關(guān)鍵,混合熱液白云巖是儲層保存的重要條件,后期構(gòu)造破裂和埋藏溶蝕對儲層起一個調(diào)整作用。
[Abstract]:Based on drilling data, core data, outcrop data, sheet data, geochemical test data and previous research results of Qixia formation of Lower Permian in northwest Sichuan, sedimentary petrology is studied in this paper. Under the guidance of tectonic geology and reservoir sedimentology, a series of studies on the stratigraphic and sedimentary facies, reservoir characteristics and formation development mechanism of Qixia formation in northwestern Sichuan are carried out, and the basic reservoir characteristics of Qixia formation dolomite reservoir are summarized. Diagenesis and formation mechanism. The main results of this work are as follows: (1) according to the lithologic assemblages, electrical properties and cycle characteristics, Qixia formation is divided from bottom to top into the first and second member of the habitat, and the first segment is subdivided into submember A and submember B; The overall distribution of the strata is stable, with a trend of gradually thinning northward, characterized by the development of a flat with half of the open confined platform facies and the deposition of the barrier beach facies. The barrier beach is mainly controlled by the high landform of the remote island chain of Longmen Mountain. The beach in the platform may be controlled by the high geomorphology of local tectonics in the platform and the uplift of synsedimentary faults. (2) through the observation of rock samples, the identification of thin slices and the analysis of test data, the reservoir rocks of Qixia formation can be divided into medium-coarse grain dolomite and residual granular dolomite. The reservoir space is composed of dissolved pores, intergranular (dissolved) pores and residual caverns filled in carbonate rocks. The dolomite reservoir space formed after dolomitization of bedrock is controlled by the reservoir appearance of the original rock, and the reservoir type is fracture pore type. (3) Qixia formation has experienced such destructive diagenesis as compaction, cementation, quasi-syntectic controlled weathering crust karstification, mixed hydrothermal dolomitization, burial dissolution and other constructive diagenesis. (4) the development of reservoir is obviously controlled by high energy grain beach facies, the karst of stratified weathering crust is the key to reservoir optimization, and mixed hydrothermal dolomite is an important condition for reservoir preservation. Late structural fracture and buried dissolution play an adjustment role on reservoir.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 金振奎,馮增昭;滇東—川西下二疊統(tǒng)白云巖的形成機(jī)理——玄武巖淋濾白云化[J];沉積學(xué)報;1999年03期

2 何瑩;鮑志東;沈安江;申銀民;李明和;;塔里木盆地牙哈—英買力地區(qū)寒武系—下奧陶統(tǒng)白云巖形成機(jī)理[J];沉積學(xué)報;2006年06期

3 李軍龍;王興志;張帆;岳曉軍;;龍門山北段礦山梁—天井山地區(qū)棲霞組儲層研究[J];重慶科技學(xué)院學(xué)報(自然科學(xué)版);2011年03期

4 康玉柱;塔里木盆地塔河大油田形成的地質(zhì)條件及前景展望[J];中國地質(zhì);2003年03期

5 蔣志斌;王興志;曾德銘;魯鐵梅;王保全;張金友;;川西北下二疊統(tǒng)棲霞組有利成巖作用與孔隙演化[J];中國地質(zhì);2009年01期

6 覃建雄;白云巖化研究的新進(jìn)展[J];地質(zhì)科技情報;1992年02期

7 陳維濤;周瑤琪;馬永生;楊恒書;;關(guān)于龍門山地區(qū)東吳運(yùn)動的存在及其性質(zhì)的認(rèn)識[J];地質(zhì)學(xué)報;2007年11期

8 楊玉卿,馮增昭;中國南方二疊紀(jì)沉積體系[J];古地理學(xué)報;2000年01期

9 胡明毅;魏國齊;胡忠貴;楊威;胡九珍;劉滿倉;吳聯(lián)錢;向娟;;四川盆地中二疊統(tǒng)棲霞組層序——巖相古地理[J];古地理學(xué)報;2010年05期

10 羅志立;孫瑋;韓建輝;王睿婧;;峨眉地幔柱對中上揚(yáng)子區(qū)二疊紀(jì)成藏條件影響的探討[J];地學(xué)前緣;2012年06期

，

本文編號：2240804