本文選題：菱鐵質(zhì)泥巖　切入點(diǎn)：含氣系統(tǒng)　出處：《天然氣地球科學(xué)》2017年04期 　論文類型：期刊論文

【摘要】：以鄂爾多斯盆地東北緣地區(qū)本溪組—山西組菱鐵質(zhì)泥巖為研究對象,對研究區(qū)鉆孔巖心與測井資料采用邏輯判別、蛛網(wǎng)圖等方法,量化了研究區(qū)菱鐵質(zhì)泥巖的測井識別特征,建立其測井識別模板。研究表明,菱鐵質(zhì)泥巖具有高光電吸收截面指數(shù)(PE)、高密度(DEN)、高自然伽馬(GR)、低聲波時(shí)差(AC)、低電阻率(M2RX)、低中子孔隙度(CNCF)的特征,研究區(qū)12口鉆孔中的菱鐵質(zhì)泥巖識別結(jié)果表明,總厚度為3.9~25.4m,總層數(shù)為8~28層,區(qū)域分布不均;通過測井資料定量分析了菱鐵質(zhì)泥巖的物性及封蓋性能,指出研究區(qū)菱鐵質(zhì)泥巖具低孔低滲性及高突破壓力的特點(diǎn),其平均滲透率為2.29×10~(-8)μm~2、平均有效孔隙度為1.20%、平均突破壓力為12.32MPa,在疊置含氣系統(tǒng)中具備隔水阻氣性能�；诹忤F質(zhì)泥巖的空間發(fā)育位置,沉積環(huán)境及形成過程分析,在本溪組山西組共識別出4個(gè)穩(wěn)定隔水阻氣層,結(jié)合氣測資料將研究區(qū)本溪組—山西組垂向劃分出5個(gè)獨(dú)立含氣系統(tǒng),每個(gè)獨(dú)立含氣系統(tǒng)的邊界便是區(qū)域分布穩(wěn)定、連續(xù)性好且垂向發(fā)育具有一定規(guī)模的以菱鐵質(zhì)泥巖為主要巖層的隔層。
[Abstract]:Taking the rhombohedral mudstone of Benxi formation and Shanxi formation in the northeastern margin of Ordos Basin as the object of study, the logging identification characteristics of rhombohedral mudstone in the study area are quantified by using the methods of logical discrimination and cobweb map to the borehole core and logging data in the study area. The well logging identification template has been established. The results show that the rhombohedral mudstone has the characteristics of high photoelectric absorption cross section index (PEI), high density (DENU), high natural gamma ray (RG), low wave time difference (AC), low resistivity (M 2RX), and low neutron porosity (CNCFC). The identification results of rhombohedral mudstone in 12 boreholes in the study area show that the total thickness is 3.9 ~ 25.4 m, the total layer number is 8 ~ 28 layers, and the distribution is uneven, and the physical properties and capping properties of rhombotite mudstone are quantitatively analyzed by well logging data. It is pointed out that the rhombohedral mudstone has the characteristics of low porosity and low permeability and high breakthrough pressure. The average permeability is 2.29 脳 10 ~ (-8) 渭 m ~ (-2) 渭 m ~ (-2), the average effective porosity is 1.20 and the average breakthrough pressure is 12.32 MPa. It has the property of water insulation and gas resistance in the superimposed gas-bearing system. In the Shanxi formation of Benxi formation, four stable water and gas barrier reservoirs were identified, and five independent gas-bearing systems were divided into five independent gas-bearing systems in the vertical direction of Benxi formation and Shanxi formation combined with gas logging data. The boundary of each independent gas-bearing system is regional distribution stability. There is good continuity and vertical development of a certain scale of iron ribosite mudstone as the main strata of the interlayer.
【作者單位】： 中國礦業(yè)大學(xué)煤層氣資源與成藏過程教育部重點(diǎn)實(shí)驗(yàn)室;中國礦業(yè)大學(xué)資源與地球科學(xué)學(xué)院;中聯(lián)煤層氣有限責(zé)任公司;
【基金】：國家自然科學(xué)基金項(xiàng)目(編號:41102100;41541046;41672146) 國家科技重大專項(xiàng)項(xiàng)目(編號:2016ZX05044-002-001;2016ZX05066-001-004)聯(lián)合資助
【分類號】：P618.13;P631.81

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