本文選題：大陸科學(xué)鉆探計(jì)劃 + 松科2井東孔��； 參考：《中國地質(zhì)大學(xué)(北京)》2017年碩士論文

【摘要】：科研鉆探是獲取地球內(nèi)部的各種地質(zhì)信息最直接、最有效、最可靠的途徑。松科2井東孔作為松遼盆地的白堊紀(jì)大陸科學(xué)鉆探工程的主體鉆孔,其未采取定向取心技術(shù)。許志琴院士曾經(jīng)指出,巖心資料是否準(zhǔn)確將會(huì)很大程度上影響到科研成果的精度。因此有必要針對科研鉆井對未定深、定向的巖心進(jìn)行空間歸位,為高精度的科學(xué)研究提供準(zhǔn)確的深度和方位信息。論文通過收集松科2井東孔成像測井資料和巖心掃描資料,利用成像-巖心掃描圖像綜合處理軟件開展巖心空間歸位工作,完成了松科2井東孔三開井段的巖心空間歸位工作并對歸位結(jié)果進(jìn)行了質(zhì)量評(píng)級(jí)。歸位結(jié)果顯示,隨著深度的增加,巖心校正深度誤差也隨之增加,符合鉆桿和電纜由于拉伸產(chǎn)生系統(tǒng)誤差隨深度逐漸增大的規(guī)律。依照巖心空間歸位質(zhì)量分級(jí)標(biāo)準(zhǔn)對松科2井東孔巖心空間歸位結(jié)果進(jìn)行質(zhì)量評(píng)定分級(jí)顯示,歸位質(zhì)量等級(jí)在AA和AB的巖心占半數(shù)以上,表明電成像測井巖心空間歸位效果整體上良好,說明該巖心空間歸位方法在松科2井東孔適用性較好,為下一步的地質(zhì)分析及科學(xué)研究奠定了基礎(chǔ)。本文詳細(xì)分析了不同巖性層段對歸位質(zhì)量的影響,研究發(fā)現(xiàn),粗砂巖、礫巖及火成巖等層段巖心深度歸位一般較為準(zhǔn)確,但無法實(shí)現(xiàn)精確的方向定位,泥巖、泥質(zhì)粉砂巖等層段巖心方向定位較為準(zhǔn)確,而深度可能存在一定的誤差�？偨Y(jié)概括歸位過程中主要的巖性、層理、裂縫等地質(zhì)特征,在此基礎(chǔ)上劃分了 4種巖心空間歸位典型特征,這些歸位典型特征可為該地區(qū)后續(xù)的巖心空間歸位工作提供參考。最后,論文結(jié)合松遼盆地徐家圍子斷陷帶構(gòu)造演化歷史和地層產(chǎn)狀分布規(guī)律,利用井震顯示技術(shù)對松科2井井旁構(gòu)造進(jìn)行解釋。結(jié)果表明,該地區(qū)構(gòu)造演化分為斷陷期和坳陷期兩個(gè)階段,斷陷期地層受區(qū)域性的擠壓改造作用影響,形成了地層傾角為14°左右,傾向?yàn)檎�、南西向的鼻狀�?gòu)造帶;坳陷期受到地質(zhì)改造作用較弱,形成了地層傾角較低的沉積地層。
[Abstract]:Scientific research drilling is the most direct, effective and reliable way to obtain all kinds of geological information inside the earth. As the main drilling hole of Cretaceous continental scientific drilling engineering in Songliao Basin, the orient coring technique has not been adopted. Academician Xu Zhiqin has pointed out that the accuracy of core data will greatly affect the accuracy of scientific research. Therefore, it is necessary to locate the undetermined and oriented cores in order to provide accurate depth and azimuth information for scientific research. By collecting imaging logging data and core scanning data from the east hole of Songke 2 well, the core spatial location is carried out by using the integrated image-core scanning image processing software. The work of core space homing in the third section of east hole of Songke 2 well has been completed and the quality rating of the result of return has been carried out. The result of homing shows that the error of core correction depth increases with the increase of depth, which accords with the rule that the systematic error of drill pipe and cable due to tension increases gradually with depth. According to the quality classification standard of core spatial homing, the results of spatial homing in east hole of Songke 2 well show that the homing quality grade is more than half of the cores of AA and AB. The results show that the effect of core space homing in electroimaging logging is good on the whole, which indicates that the core spatial homing method is suitable for the east hole of Songke 2 well, which lays a foundation for further geological analysis and scientific research. In this paper, the influence of different lithologic strata on the homing quality is analyzed in detail. It is found that the depth of core in the strata such as coarse sandstone, conglomerate and igneous rock is generally more accurate, but it is unable to achieve accurate orientation, mudstone, etc. The direction orientation of the core in the shaly siltstone is more accurate, but the depth may have some errors. This paper summarizes the main geological characteristics of lithology, bedding, fracture and so on in the process of homing, and on this basis divides four typical characteristics of core spatial homing, which can provide reference for the subsequent work of core spatial homing in this area. Finally, combined with the history of structural evolution and formation occurrence and distribution law of Xujiaweizi fault belt in Songliao Basin, well seismic display technique is used to interpret the structure around well Songke 2. The results show that the tectonic evolution in this area can be divided into two stages: the faulting stage and the depression stage. The strata in the faulted period are affected by regional compressional transformation, forming a nasal structural belt with a dip angle of 14 擄and a tendency to be positive west and south west. The depressions were weak by geological transformation and formed sedimentary strata with low dip.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P631.81;P634

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 高有峰;瞿雪姣;蔣麗君;王樹學(xué);王璞s，

本文編號(hào)：1868981