泥質(zhì)白云巖儲層裂縫識別及常規(guī)測井評價
本文選題:泥質(zhì)白云巖 + 裂縫特征; 參考:《地質(zhì)科技情報》2017年03期
【摘要】:湖相泥質(zhì)白云巖巖性變化與裂縫分布的非均質(zhì)性強,裂縫測井評價難度較大。以塘沽地區(qū)為例,以T12C井巖心段為對象,基于詳細(xì)的巖性、裂縫描述資料,總結(jié)了本區(qū)儲層巖性與裂縫發(fā)育的特征,并以巖性、裂縫特征對裂縫的常規(guī)測井響應(yīng)進(jìn)行地質(zhì)約束,建立了裂縫發(fā)育程度測井相圖版及定量評價模型。研究結(jié)果表明:塘沽地區(qū)儲層裂縫以高角度-垂直構(gòu)造裂縫為主;巖性、層厚對裂縫發(fā)育特征起控制作用,厚層白云巖發(fā)育網(wǎng)狀微裂縫,而薄層段的泥質(zhì)白云巖則發(fā)育大開度張裂縫;測井組合參數(shù)聲波時差與密度比值(AC/DEN)、聲波時差與自然伽馬比值(AC/GR)能夠減弱層界面等非裂縫因素的影響,因此對裂縫的響應(yīng)效果更好。本研究建立了可靠的裂縫發(fā)育程度測井相圖版及定量評價模型,綜合判別準(zhǔn)確率達(dá)到71.43%,以地質(zhì)特征對各圖版之間的差異進(jìn)行合理解釋,較好地預(yù)測了本區(qū)其他井的裂縫發(fā)育情況。
[Abstract]:The heterogeneity of lithology and fracture distribution of lacustrine argillaceous dolomite is strong, and it is difficult to evaluate fracture logging. Taking Tanggu area as an example, taking the core section of T12C well as an example, based on detailed lithology and fracture description data, the characteristics of reservoir lithology and fracture development in this area are summarized, and the characteristics of lithology and fracture are taken as geological constraints to the conventional logging response of fractures. The logging facies chart and quantitative evaluation model of fracture development degree are established. The results show that the reservoir fractures in Tanggu area are dominated by high-angle-vertical structural fractures, lithology and formation thickness play a controlling role in the development of fractures, and dolomite in thick beds develop net-like microfractures. On the other hand, muddy dolomite in the thin section has large opening and tensional fractures, and the ratio of acoustic time difference and density of logging assemblage is AC / DEN, and the ratio of acoustic time difference to natural gamma ray can weaken the influence of non-fracture factors such as layer interface. Therefore, the response to cracks is better. In this study, a reliable log chart of fracture development degree and a quantitative evaluation model have been established, and the accuracy of comprehensive discrimination has reached 71.43. The differences between the plates are explained reasonably by geological characteristics. The fracture development of other wells in this area is well predicted.
【作者單位】: Geology
【基金】:中國石油股份有限公司大港油田分公司重點項目(DGYT-2012-JS-566)
【分類號】:P618.13;P631.81
【相似文獻(xiàn)】
相關(guān)期刊論文 前9條
1 李波峰;;新溝地區(qū)泥質(zhì)白云巖油藏地質(zhì)和試采特征分析[J];長江大學(xué)學(xué)報(自科版);2014年13期
2 查樹貴;何又雄;莫莉;韓兵;牛麗煥;;王場地區(qū)鹽間泥質(zhì)白云巖油藏“甜點”地震預(yù)測[J];石油地球物理勘探;2013年S1期
3 漆智先;李應(yīng)芳;陳素;;潛江凹陷潛江組鹽間泥質(zhì)白云巖巖相特征及意義[J];江漢石油職工大學(xué)學(xué)報;2014年03期
4 孫乘云;;安徽巢湖地區(qū)半湯泥質(zhì)白云巖組的穿時性[J];中國區(qū)域地質(zhì);1988年04期
5 陳樹杰;趙薇;;江漢盆地潛江凹陷鹽間泥質(zhì)白云巖油藏儲層物性特征探討[J];長江大學(xué)學(xué)報(自然科學(xué)版)理工卷;2010年01期
6 羅平,楊式升,馬龍,蘇麗萍;酒西盆地青西坳陷湖相紋層狀泥質(zhì)白云巖中泥級斜長石成因、特征與油氣勘探意義[J];石油勘探與開發(fā);2001年06期
7 劉照顯;放馬山三層礦粉礦選礦試驗[J];化工礦山技術(shù);1989年05期
8 蔡仲輝;;自貢4.6級地震與深井鹵水咸量變化[J];四川地震;1986年02期
9 ;[J];;年期
相關(guān)會議論文 前1條
1 羅平;馬龍;楊式升;;試論湖相紋層泥質(zhì)白云巖的成因[A];2001年全國沉積學(xué)大會摘要論文集[C];2001年
相關(guān)博士學(xué)位論文 前1條
1 趙耀;泥質(zhì)白云巖儲層裂縫系統(tǒng)定量表征及建模[D];中國地質(zhì)大學(xué);2015年
相關(guān)碩士學(xué)位論文 前1條
1 郭建強;含水率變化對泥質(zhì)白云巖石風(fēng)化特征影響的試驗研究[D];貴州大學(xué);2009年
,本文編號:1862259
本文鏈接:http://sikaile.net/kejilunwen/shiyounenyuanlunwen/1862259.html