本文選題：裂縫 + 分布模式��； 參考：《天然氣地球科學(xué)》2017年07期

【摘要】：準(zhǔn)噶爾盆地車排子地區(qū)石炭系內(nèi)發(fā)育有多條逆沖斷層和多樣的火山巖,且火山巖儲層中構(gòu)造裂縫發(fā)育。為了研究逆沖斷層發(fā)育區(qū)火山巖裂縫分布模式,以車排子地區(qū)石炭系火山巖為例,分析了裂縫在縱向上和平面上的分布特征,并引入裂縫分布范圍的"質(zhì)心"概念,定量研究了裂縫分布范圍在三維空間中的變化特征,提出了逆沖斷層發(fā)育區(qū)火山巖裂縫分布模式。研究認(rèn)為:裂縫空間分布范圍變化特征有4種類型:質(zhì)心正向偏移+密度值變大型(Ⅰ型)、質(zhì)心負(fù)向偏移+密度值變大型(Ⅱ型)、質(zhì)心正向偏移+密度值減小型(Ⅲ型)、質(zhì)心負(fù)向偏移+密度值減小型(Ⅳ型)。逆沖斷層發(fā)育區(qū)火山巖裂縫具有條帶狀楔形質(zhì)心偏移模式,該模式特點為:平面上,裂縫分布形態(tài)呈現(xiàn)條帶狀;縱向上,裂縫分布形態(tài)呈現(xiàn)楔形,同時受到火山巖巖性的影響,局部裂縫的分布范圍變大;裂縫分布范圍的"質(zhì)心"會在斷層和火山巖巖性的控制作用下發(fā)生偏移。裂縫分布范圍的"質(zhì)心"概念的引入,可為裂縫分布規(guī)律的研究提供一種新的思路和方法。
[Abstract]:There are many thrust faults and various volcanic rocks in Carboniferous in Chepaizi area of Junggar Basin and tectonic fractures are developed in volcanic reservoir.In order to study the fracture distribution pattern of volcanic rocks in thrust fault development area, taking Carboniferous volcanic rocks in Chepaizi area as an example, the distribution characteristics of fractures in longitudinal and plane are analyzed, and the concept of "center of mass" of fracture distribution range is introduced.The variation characteristics of fracture distribution range in three dimensional space are studied quantitatively, and the distribution pattern of volcanic rock fractures in thrust fault area is proposed.It is found that there are four types of variation in the spatial distribution of fractures: the density value of the forward migration of the center of mass becomes large (type 鈪，

本文編號：1767971