CAJ | 학술논문

NLSD-1孔是南岭地区第一口科学钻探孔，也是目前我国金属矿区最深的科学钻探工程之一，终孔深度达到2967．83 m。为了精细刻画矿集区深部结构框架、揭示深部矿化带分布特征和建立深部找矿地球物理解释标尺，提高对深部成矿规律的认识，该孔在钻进过程中实施了连续取芯，并且进行了多种地球物理测井和井中物探方法的测量。超声波成像测井是一种先进的测井技术，包含丰富的原位地质特征信息，在油气勘探中常用于井旁地质构造和地应力分析。本文将超声波成像测井应用于金属矿区科学钻探中，对NLSD-1孔采集到的超声波成像测井资料进行了研究，认为成像测井图像能够精细刻画孔壁裂缝、破碎带等地质特征，同样适合于金属矿勘查中的井旁构造解释；主要矿化层（409～429 m、430～446 m、621～641 m、655～666 m、679～691 m、696～706 m、744～759 m、776～788 m、907～921 m、1031～1042 m、1081～1090 m、1430～1439 m、1440～1448 m等）均发育裂缝或破碎带，表明测井结果对矿化层埋深具有指示作用，并且揭示钻孔附近矿化层具有西浅东深的空间展布特征；根据裂缝产状的垂向变化，推断F1断层过NLSD-1孔深度范围为1375．32～1380．79 m；此外，裂缝与孔斜关系的研究对钻孔纠斜具有指导意义。研究结果表明超声波成像测井在深部找矿中能够发挥重要作用。
NLSD-1공시남령지구제일구과학찬탐공，야시목전아국금속광구최심적과학찬탐공정지일，종공심도체도2967．83 m。위료정세각화광집구심부결구광가、게시심부광화대분포특정화건립심부조광지구물리해석표척，제고대심부성광규률적인식，해공재찬진과정중실시료련속취심，병차진행료다충지구물리측정화정중물탐방법적측량。초성파성상측정시일충선진적측정기술，포함봉부적원위지질특정신식，재유기감탐중상용우정방지질구조화지응력분석。본문장초성파성상측정응용우금속광구과학찬탐중，대NLSD-1공채집도적초성파성상측정자료진행료연구，인위성상측정도상능구정세각화공벽렬봉、파쇄대등지질특정，동양괄합우금속광감사중적정방구조해석；주요광화층（409～429 m、430～446 m、621～641 m、655～666 m、679～691 m、696～706 m、744～759 m、776～788 m、907～921 m、1031～1042 m、1081～1090 m、1430～1439 m、1440～1448 m등）균발육렬봉혹파쇄대，표명측정결과대광화층매심구유지시작용，병차게시찬공부근광화층구유서천동심적공간전포특정；근거렬봉산상적수향변화，추단F1단층과NLSD-1공심도범위위1375．32～1380．79 m；차외，렬봉여공사관계적연구대찬공규사구유지도의의。연구결과표명초성파성상측정재심부조광중능구발휘중요작용。
The hole NLSD-1 is the first scientific drilling deep hole in the Nanling region,which also is one of the deepest scientific drilling projects in metallic ore districts of China,and its final depth is 2967.83 m.In order to characterize the deep structural frame of the ore concentration area,reveal the distribution characteristics of the deep mineralization belt,establish the geophysical interpretation rule of deep ore prospecting,and improve the understanding of the laws of deep mineralization of deposit,this hole was implemented continuous coring,and conducted the measuring of a variety of geophysical logging and borehole geophysical methods in the drilling process.Ultrasonic imaging logging is an advanced logging technology,which contains abundant in-situ geological characteristics information,often used to analyze the geological structure and in-situ stress near the hole in the oil and gas exploration.This paper applied ultrasonic imaging logging to scientific drilling in metallic ore districts,studied the ultrasonic imaging logging data of hole NLSD-1 ,considered that ultrasonic imaging logging images which can characterize the geological features of fractures and fracture zones of the borehole wall,are also suitable for the structural interpretation near the hole in the metal ore exploration.All the main mineralized layers (409~429 m,430~446 m,621~641 m,655~666 m,679~691 m,696~706 m,744~759 m,776~788 m,907~921 m, 1031~1042 m,1081~1090 m,1430~1439 m,and 1440~1448 m et al.)were developed fractures or fracture zones,which indicated that the logging results can illustrate the depth of mineralized layers,and explained the spatial extension characteristics of west light and east deep in the mineralized layers near the hole.Based on the vertical variation of the fracture occurrence,we inferred that the intersection depth range of the fault F1 and hole NLSD-1 is 1375.32~1380.79 m.Besides,the study of the relation between fracture inclination and well deviation has guiding significance for drilling hole straightening.The study results indicate that the ultrasonic imaging logging plays an important role in deep ore prospecting.