發(fā)布時(shí)間：2018-09-13 07:08

【摘要】：通過(guò)綜合解釋鎮(zhèn)原—涇川地區(qū)的鉆井和三維地震資料,分析了走滑斷層的分布規(guī)律、形成期、應(yīng)力性質(zhì)及其對(duì)長(zhǎng)8油藏和高產(chǎn)井的控制作用,得出以下認(rèn)識(shí):(1)研究區(qū)在印支期的NE-SW向擠壓作用力下形成了NEE和NNE向"X"型共軛剪切斷層,在燕山期的SE向右旋壓扭作用力下形成NW向斷層,NEE向斷層持續(xù)活動(dòng),NNE向斷層活動(dòng)不明顯;(2)走滑斷層分為Ⅰ、Ⅱ、Ⅲ等3類,其中Ⅰ類自?shī)W陶系及以下地層斷至白堊系及以上地層,平面延伸最長(zhǎng),斷開(kāi)地層最厚,在平面上共發(fā)育NW和NEE向兩組斷裂帶,Ⅱ類自三疊系內(nèi)部斷至白堊系及以上地層,在平面上主要呈NE向延伸,Ⅲ類自?shī)W陶系及以下地層斷至中、上二疊統(tǒng),在平面上主要呈NNE向延伸;(3)高產(chǎn)水平井均沿Ⅰ類走滑斷層分布,沿Ⅱ、Ⅲ類走滑斷層分布的長(zhǎng)8砂巖多為水層或含油水層。
[Abstract]:Based on the comprehensive interpretation of drilling and 3D seismic data in Zhenyuan-Jingchuan area, the distribution of strike-slip faults, their forming period, stress properties and their control effects on Chang-8 reservoir and high-yield wells are analyzed. The main conclusions are as follows: (1) in the Indosinian period, the conjugate shearing faults of NEE and NNE direction "X" were formed under the NE-SW compression force in the Indosinian period. In Yanshanian period, the continuous activity of NNE-trending faults is not obvious due to the formation of NW trending faults under the right spinning and torsional forces of Yanshanian period. (2) the strike-slip faults can be classified into three types: 鈪，

本文編號(hào)：2240434