【摘要】：研究區(qū)處于志留系生油凹陷,嘉陵江組烴源主要來自于志留系,烴源充足；地面出露侏羅系沙溪廟組地層,上覆蓋層完整,保存條件好。同時研究區(qū)內(nèi)嘉陵江組縱向上發(fā)育多套儲集層,物性較好,鉆井中井噴、井漏等油氣顯示普遍。研究區(qū)嘉陵江組天然氣控制儲量大,而探明程度低,可探潛力大。 本文綜合利用錄井、鉆井、測井、地震和多種實驗測試資料,對研究區(qū)的地層劃分和對比、沉積相特征、儲層特征等進(jìn)行系統(tǒng)研究。鹿角場-李子壩地區(qū)嘉陵江時期為碳酸鹽臺地,發(fā)育開闊臺地相和局限臺地相。研究區(qū)嘉陵江組在其沉積演化過程中經(jīng)歷了三次海平面升降變化,三次海進(jìn)的范圍和海平面相對高度,有逐漸減小和降低的趨勢。雖然研究區(qū)嘉陵江組沉積相的垂向分異具有明顯的旋回疊置特征,但是平面分布特征,卻沒有如此簡明的規(guī)律性,幾套儲蓋層在平面上的沉積相變化和分異比較頻繁。 基于嘉陵江組地層發(fā)育的基本特征,以層序地層學(xué)理論為指導(dǎo),選取三條剖面進(jìn)行了地層對比。對比發(fā)現(xiàn),研究區(qū)發(fā)育幾套穩(wěn)定的標(biāo)志層,地層界限比較明顯,易于對比。研究區(qū)嘉陵江組的儲集巖主要包括：顆�；�?guī)r、顆粒云巖以及粉一微晶云巖3大巖石類型。 研究區(qū)嘉陵江組為特低孔、低滲儲層,82.39%的樣品孔隙度小于2%,孔隙度大于6%的只占到3.3%左右,僅約6%的樣品實測滲透率大于0.1×10-3mD,在裂縫的作用下,可在局部形成較高孔隙度、高滲透率的層段,判定本研究區(qū)嘉陵江組的儲層為低孔低滲型的儲層。研究區(qū)儲集層的儲集空間類型較多樣化,綜合對比分析,儲集空間以次生孔隙或孔洞為主,另外發(fā)育有溶洞和裂縫儲集空間,綜合判斷,嘉陵江組儲層類型主要為裂縫—孔隙型。 研究區(qū)嘉陵江組儲層分為4類,嘉二1-嘉一上儲層最為發(fā)育,其次為嘉二2。根據(jù)鹿角場-李子壩地區(qū)嘉陵江組單井測井解釋成果,在研究區(qū)內(nèi)儲層段篩選了3條剖面,進(jìn)行了連井儲層對比評價,總結(jié)了儲層的分布特征,并對本區(qū)嘉陵江組地層開展有利開發(fā)目標(biāo)評價研究。
[Abstract]:The research area is in the oil-bearing depression of the Silurian system, and the hydrocarbon source in the Jialing River is mainly from the Silurian system and the source of the hydrocarbon is sufficient; the formation of the Jurassic Shaximiao Formation of the Jurassic in the ground is complete and the storage condition is good. At the same time, there are multiple reservoirs in the longitudinal direction of Jialing River in the study area, with good physical property, well blowout and well leakage in the well. The gas control reserves of the Jialingjiang Formation in the research area are large, and the exploration potential is low and the exploration potential is large. This paper comprehensively uses mud logging, drilling, logging, earthquake and various experimental data to study the formation and contrast, sedimentary facies and reservoir characteristics of the research area. The period of Jialing River in the antlers-plums area is the carbonate platform, the open platform facies and the limited platform are developed. In the process of its sedimentary evolution, the Jialingjiang Formation of the research area has undergone three changes of sea level rise and fall, the range of the three transgression and the relative height of sea level, and the trend of gradually decreasing and decreasing the sea level Although the vertical differentiation of the sedimentary facies of the Jialingjiang Formation in the research area has obvious cyclic stacking characteristics, the distribution of the plane is not so simple, and the sedimentary facies change and the differential frequency of the cover layers in the plane are different. Based on the basic characteristics of the formation development of the Jialingjiang Formation, three sections are selected by the sequence stratigraphy theory as the guide. The comparison of the two layers shows that the study area has several stable marker layers, and the formation boundary is obvious and easy to use. The primary rock of the Jialingjiang Formation in the study area is mainly composed of the granular limestone, the granulites and the 3 large rocks of the fine-grained migmatite. The porosity of the sample is less than 2%, the porosity is more than 6%, only about 3.3%, and only about 6% of the sample has a measured permeability of more than 0.1% to 10-3 mD, and can be formed locally under the action of the crack. The reservoir of the Jialingjiang Formation in the study area is low in porosity and low in the layer segment with higher porosity and high permeability. The types of reservoir space in the reservoir of the study area are diversified, the comprehensive comparison and analysis, the reservoir space is the main pore or the hole, and the karst cave and the fracture reservoir are developed, and the reservoir type of the Jialingjiang Formation is mainly divided. The reservoir of Jialingjiang Formation in the study area is divided into 4 types, Jiayuan 1-Jiacheng reservoir is the most developed. 2. According to the results of well logging interpretation of Jialingjiang Formation in the area of the antlers-plums, three sections were selected in the reservoir section in the study area, and the reservoir comparative evaluation was carried out, and the distribution characteristics of the reservoir were summarized, and the formation of the Jialingjiang Formation in this area was carried out.
【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

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