本文選題：燈影組　切入點：儲層　出處：《西南石油大學(xué)》2015年碩士論文

【摘要】：四川盆地深層海相碳酸鹽巖油氣勘探領(lǐng)域已取得較大的突破,川中高石梯-磨溪地區(qū)震旦系勘探表明其基本油氣地質(zhì)條件較好、油氣資源豐富、勘探潛力好。然而,鑒于燈影組儲集層段埋藏較深、成巖作用復(fù)雜、成藏規(guī)律認(rèn)識不足及勘探程度低等因素,對高-磨以東的合川-廣安地區(qū)燈影組儲層基本特征、主控因素、發(fā)育規(guī)律及油氣成藏等問題的認(rèn)識尚不明晰。因此,深化合川-廣安地區(qū)燈影組儲層特征研究、落實其含油氣性、擴(kuò)大勘探場面意義重大。 合川-廣安地區(qū)震旦系燈影組碳酸鹽巖以灰色藻云巖、晶粒云巖為主,次為砂屑云巖、溶塌角礫巖。沉積相類型以碳酸鹽巖潮坪為主,具體可以劃分為淺水臺坪和半深水臺坪兩個相及高能灘、較高能丘、藻丘、低能云坪、低能云泥坪等多個亞/微相。儲集空間類型以晶間溶孔、粒間溶孔及裂縫為主,總體屬裂縫-孔洞型儲層。研究區(qū)及鄰區(qū)燈二段孔隙度為2%～3.5%,滲透率為0.01～0.1mD；燈四段孔隙度主要分布在4.0%～9.0%之間,次為2.5%～3.0%,滲透率為0.1～10mD,總體屬低孔、低滲儲層。儲層主要分布在燈二段及燈四段頂部,燈二段上部儲層厚度較大、橫向展布較連續(xù),燈四段上部儲層橫向展布較連續(xù),厚度從西向東逐漸減薄。 研究區(qū)烴源巖主要以上覆筇竹寺組暗色泥頁巖為主,次為燈影組燈三段及陡山沱組。其中,筇竹寺組烴源巖厚度為90m左右、Ro大于2%、有機(jī)碳豐度平均值為1.48%,生氣強(qiáng)度約20×108m3/km2。因此,筇竹寺組頁巖應(yīng)為優(yōu)質(zhì)有效烴源巖。 合川-廣安地區(qū)燈影組地層受樂山-龍女寺古隆起演化明顯,油氣運聚具多期成藏特征�？傮w看來,研究區(qū)燈影組位于相對有利的沉積環(huán)境、構(gòu)造演化有利于成藏、儲-蓋搭配較好利于油氣聚集、氣藏圈閉類型主要以構(gòu)造-巖性復(fù)合圈閉為主,為相對有利的勘探區(qū)帶。
[Abstract]:Great breakthrough has been made in the exploration of deep marine carbonate rocks in Sichuan Basin. The Sinian system exploration in the Gaoshita-Moxi area shows that the basic oil and gas geological conditions are good, the oil and gas resources are abundant, and the exploration potential is good. In view of such factors as deep burial, complex diagenesis, insufficient understanding of reservoir formation law and low exploration degree, the basic characteristics and main controlling factors of Dengying formation reservoir in Hechuan-Guangan area east of Gaomo are analyzed. Therefore, it is of great significance to deepen the study of reservoir characteristics of Dengying formation in Hechuan-Guangan area, to carry out its oil-gas bearing property and to expand the exploration scene. The carbonate rocks of the Dengying formation of the Sinian system in Hechuan-Guang 'an area are mainly composed of grey algal dolomite, grain dolomite, sand dolomite and dissolved collapse breccia. The sedimentary facies type is mainly carbonate tidal flat. It can be divided into two phases: shallow water platform flat and semi-deep water platform flat, and high energy beach, higher energy hill, algae dune, low energy cloud flat, low energy cloud mud flat and other sub-/ microfacies. The reservoir space types are intergranular dissolved pore, intergranular dissolved pore and fracture, etc. The porosity of the second stage of the study area and adjacent area is 2 ~ 3. 5 and the permeability is 0. 01 ~ 0. 1 mD.The porosity of the fourth section of the lamp is mainly distributed between 4.0% and 9. 0%, the secondary porosity is 2. 5% and the permeability is 0. 1 ~ 10 mD. the total porosity is low. The reservoir is mainly distributed at the top of the second section of the lamp and the fourth section of the lamp. The upper part of the second section of the lamp is thicker and the lateral distribution is continuous, and the upper reservoir of the fourth section of the lamp is more continuous, and the thickness is gradually thinning from the west to the east. In the study area, the source rocks are mainly covered with dark mud shale of Qiongzhusi formation, followed by Dengying formation and Doushantuo formation. The thickness of source rock of Qiongzhusi formation is about 90 m and Ro is more than 2. The average value of organic carbon abundance is 1.48 and the gas generation intensity is about 20 脳 108 m3 / km2. The Qiongzhusi formation shale should be a high quality effective source rock. The strata of Dengying formation in Hechuan and Guangan area are obviously evolved by Leshan-Longnusi paleouplift, and the hydrocarbon migration and accumulation are characterized by multi-stage accumulation. Generally speaking, the Dengying formation in the study area is located in a relatively favorable sedimentary environment, and the tectonic evolution is favorable to reservoir formation. The combination of reservoir and cap is favorable for oil and gas accumulation, and the trap type of gas reservoir is mainly tectonic-lithologic complex trap, which is a relatively favorable exploration zone.
【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 華保欽;構(gòu)造應(yīng)力場、地震泵和油氣運移[J];沉積學(xué)報;1995年02期

2 康永尚,龐雄奇;油氣成藏流體動力系統(tǒng)分析原理及應(yīng)用[J];沉積學(xué)報;1998年03期

3 何海清,王兆云,程玉群;渤海灣盆地深層石油地質(zhì)條件分析[J];沉積學(xué)報;1999年02期

4 岳伏生,郭彥如,馬龍,李天順;成藏動力學(xué)系統(tǒng)的研究現(xiàn)狀及發(fā)展趨向[J];地球科學(xué)進(jìn)展;2003年01期

5 王月;沈建偉;楊紅強(qiáng);王旭;劉苗苗;;微生物碳酸鹽沉積及其研究意義[J];地球科學(xué)進(jìn)展;2011年10期

6 邱楠生,金之鈞;油氣成藏的脈動式探討[J];地學(xué)前緣;2000年04期

7 賈承造;魏國齊;李本亮;;中國中西部小型克拉通盆地群的疊合復(fù)合性質(zhì)及其含油氣系統(tǒng)[J];高校地質(zhì)學(xué)報;2005年04期

8 羅平;王石;李朋威;宋金民;金廷福;王果謙;楊式升;;微生物碳酸鹽巖油氣儲層研究現(xiàn)狀與展望[J];沉積學(xué)報;2013年05期

9 常象春,張金亮;油氣成藏動力學(xué):涵義、方法與展望[J];海洋地質(zhì)動態(tài);2003年02期

10 ;Microbial carbonates in Holocene beachrocks,Shuiweiling,Luhuitou Peninsula,Hainan Island[J];Science in China(Series D:Earth Sciences);2008年01期

，

本文編號：1691784