本文選題：膠萊盆地 + 水南組�。� 參考：《中國礦業(yè)大學(xué)》2015年碩士論文

【摘要】：膠萊盆地發(fā)育有多套富有機(jī)質(zhì)泥頁巖,其中水南組富有機(jī)質(zhì)泥頁巖發(fā)育良好,具有較好的頁巖氣成藏地質(zhì)條件。本文以膠萊盆地水南組富有機(jī)質(zhì)泥頁巖為研究對(duì)象,通過資料收集-野外地質(zhì)調(diào)查-實(shí)驗(yàn)測(cè)試-理論分析,對(duì)研究區(qū)水南組頁巖氣成藏條件展開系統(tǒng)研究,結(jié)果表明:水南組為一套半深湖-深湖相沉積,巖性組合以頁巖、粉砂巖和泥灰?guī)r為主,總厚度介于50~200m,目前埋深主體位于1000~3000m,最大可達(dá)5000m。泥頁巖有機(jī)質(zhì)類型以II型為主,次為Ⅲ型;有機(jī)質(zhì)豐度主體位于0.15~4.00%;有機(jī)質(zhì)成熟度介于0.8~1.6%,主體位于1.0~1.4%,已進(jìn)入成熟階段。礦物成分以黏土礦物和石英為主,脆度與中國南方下古生界海相頁巖相當(dāng)。氣體最大吸附量介于1.34~2.09m3/t,平均為1.67m3/t。水南組泥頁巖發(fā)育有機(jī)質(zhì)孔、粒內(nèi)孔、粒內(nèi)溶蝕孔和粒間孔等類型�？讖街饕性谖⒖缀托】追秶�,孔隙度一般為4.0~10.0%。泥頁巖儲(chǔ)層裂縫主要以天然微裂縫為主,是吸附氣由解析到游離的主要通道,有利于頁巖氣的運(yùn)移。水南組頁巖氣成藏主控因素概括為以下幾個(gè)方面:沉積環(huán)境控制了水南組頁巖氣成藏的物質(zhì)來源、有效厚度、有機(jī)質(zhì)豐度等;黏土礦物為頁巖氣吸附提供了大量的微孔隙體積和比表面積,脆性礦物可以增強(qiáng)頁巖的脆度和造縫能力;構(gòu)造埋藏作用促進(jìn)頁巖中的有機(jī)質(zhì)生烴,構(gòu)造拉張擠壓使頁巖中發(fā)育大量的裂隙,影響頁巖氣的運(yùn)移和聚集;孔隙結(jié)構(gòu)和類型影響頁巖氣的游離和吸附狀態(tài),尤其是有機(jī)質(zhì)孔對(duì)頁巖氣的賦存影響最大。綜合評(píng)價(jià),認(rèn)為膠萊盆地具有較好的頁巖氣資源前景,其中桃村凹陷、萊陽凹陷深部、夏格莊洼陷東部、諸城凹陷深部以及平度洼陷北部,頁巖氣成藏條件好,具備頁巖氣勘探開發(fā)前景。
[Abstract]:There are many sets of organic shale rich in organic matter in Jiulai basin, of which the organic shale of Shuinan formation is well developed, and has good geological conditions of shale gas reservoir formation. Taking the organic shale of the Shuinan formation in Jiaolai Basin as the research object, through data collection, field geological investigation, experimental test and theoretical analysis, the conditions of shale gas accumulation in Shuinan formation in the study area are studied systematically. The results show that the Shuinan formation is a set of semi-deep lacustrine-deep lacustrine facies deposits, with shale, siltstone and marlite as the main lithologic assemblages, with a total thickness of 50 ~ 200m. At present, the buried depth is located at 1000m ~ 3000m, with a maximum of 5000m. The type of organic matter of shale is mainly type II, the third type, the abundance of organic matter lies at 0.154.00, the maturity of organic matter is between 0.8 and 1.6, and the main body is at 1.0 and 1.4, which has entered the mature stage. The mineral composition is mainly clay and quartz, and its brittleness is equivalent to that of lower Paleozoic marine shale in southern China. The maximum adsorption capacity of gas is between 1.34 and 2.09 m3 / t, with an average of 1.67 m3 / t. The shale of the Shuinan formation developed organic pore, inner-particle corrosion pore and intergranular pore. The pore size is mainly concentrated in micropores and micropores, and the porosity is generally 4.0 ~ 10.0. The main fractures in shale reservoir are natural microfractures, which are the main channels of adsorptive gas from analytic to free, which is beneficial to the migration of shale gas. The main controlling factors of shale gas accumulation in Shuinan formation are summarized as follows: the sedimentary environment controls the material source, effective thickness and abundance of organic matter of shale gas reservoir in Shuinan formation; Clay minerals provide a large amount of micropore volume and specific surface area for shale gas adsorption, brittle minerals can enhance the brittleness and fracture ability of shale, and structural burial can promote hydrocarbon generation of organic matter in shale. Structural tensioning and squeezing make a large number of fractures develop in shale, which affect the migration and accumulation of shale gas, and pore structure and type affect the free and adsorption state of shale gas, especially the pore of organic matter has the greatest influence on the occurrence of shale gas. The comprehensive evaluation shows that Jialai Basin has a good prospect of shale gas resources, including Taocun depression, Laiyang sag, eastern Xiagezhuang sag, deep Zhucheng sag and northern Pingdu sag, and good conditions for shale gas accumulation. Shale gas exploration and development prospects.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13

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