?url_ver=Z39.88-2004&rft_id=1415051068&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=KARAKTERISASI+RESERVOAR+MENGGUNAKAN+SPEKTRAL+DEKOMPOSISI+BERBASIS+CONTINUOUS+WAVELET+TRANSFORM+(CWT)%2C+SEISMIK+INVERSI+DAN+ANALISIS+PETROFISIKA%3A+STUDI+KASUS+CEKUNGAN+BONAPARTE&rft.creator=Sri+Rizky%2C+1415051068&rft.subject=QC+Physics&rft.subject=Teknologi+(General)&rft.description=Data+seismik%2C+secara+alami+merupakan+sinyal+non+stasioner+yang+mempunyai+bermacam+frekuensi+yang+berubah+terhadap+waktu.+Salah+satu+atribut+seismik+yang+mampu+mencirikan+tanggap+frekuensi+yang+berubah+terhadap+waktu+dari+batuan+dan+reservoar+adalah+dekomposisi+spektral.+Pemilihan+frekuensi+yang+tepat+dapat+memberikan+penggambaran+zona+target+yang+lebih+jelas..+Pada+penelitian+ini%2C+analisis+dekomposisi+spektral+frekuensi+rendah+berbasis+Continuous+Wavelet+Transform+(CWT)+dikombinasikan+dengan+analisis+petrofisika+dan+seismik+inversi+impedansi+akustik+diterapkan+pada+Formasi+Flover%2C+Cekungan+Bonaparte+untuk+mengidentifikasi+reservoar+batupasir+tersaturasi+gas.+Pada+proses+CWT+dilakukan+FFT+(Fast+Fourier+Transform)+dari+setiap+window+waktu+sinyal+secara+menerus+sampai+diperoleh+frekuensi+yang+paling+tepat+pada+zona+target.+Dari+hasil+penelitian+menunjukkan+adanya+low+frequency+shadow+sebagai+DHI+(Direct+Hydrocarbon+Indicator)+pada+frekuensi+12+Hz+di+zona+reservoar+daerah+penelitian.+Hal+ini+didukung+dengan+hasil+inversi+yang+menunjukkan+nilai+AI+yang+rendah+yaitu+berkisar+10000%E2%80%9322000+((ft%2Fs)*(gr%2Fcc)).+Berdasarkan+hasil+perhitungan+petrofisika%2C+zona+reservoar+memiliki+nilai+porositas+sekitar+5-25%25%2C+nilai+Vshale+0.11-0.14%2C+nilai+Sw+2-30%25%2C+dan+nilai+densitas+sekitar+2.00%E2%80%932.25+gr%2Fcc.+Kombinasi+metode+dekomposisi+spektral+berbasis+CWT%2C+inversi+seismik%2C+dan+analisis+petrofisika+mengindikasikan+adanya+akumulasi+hidrokarbon+berupa+gas+pada+zona+reservoar+yang+terletak+di+area+tenggara+daerah+penelitian.%0D%0A%0D%0AKata+kunci%3A+Dekomposisi+spektral%2C+Continuous+Wavelet+Transform+(CWT)%2C+Inversi%2C+Petrofisika%0D%0A%0D%0A%0D%0AABSTRACT%0D%0A%0D%0A%0D%0ASeismic+data+is+a+non-stationary+signal+that+has+multiple+frequencies+that+change+with+time.+One+of+the+seismic+attributes+capable+of+characterizing+the+changing+frequency+response+to+the+time+of+rocks+and+reservoirs+is+the+spectral+decomposition.+The+selection+of+the+right+frequency+can+provide+a+detail+charaterization+of+the+target+zone.+In+this+study%2C+the+analysis+of+low+frequency+spectral+decomposition+based+on+Continuous+Wavelet+Transform+(CWT)+combined+with+petrophysical+analysis+and+seismic+inversion+of+acoustic+impedance+applied+to+Flover+Formation%2C+Bonaparte+Basin+to+identify+sandstone+reservoir+saturated+gas.+In+the+CWT+process%2C+FFT+(Fast+Fourier+Transform)+is+performed+from+each+window+of+signal+time+continuously+until+the+most+appropriate+frequency+is+reached+in+the+target+zone.+The+results+of+the+research+shows+the+existence+of+low+frequency+shadow+as+DHI+(Direct+Hydrocarbon+Indicator)+at+frequency+12+Hz+in+reservoir+zone+of+research+area.+This+is+supported+by+the+inversion+results+indicating+low+AI+values+ranging+from+10000-22000+((ft%2Fs)*(gr%2Fcc)).+Based+on+the+calculation+of+petrophysics%2C+reservoir+zone+has+a+porosity+value+of+about+5-25%25%2C+Vshale+0.11-0.14%2C+Sw+value+2-30%25%2C+and+density+value+about+2.00-2.25+gr%2Fcc.+The+combination+of+CWT+method%2C+seismic+inversion%2C+and+petrophysical+analysis+indicate+the+accumulation+of+gaseous+hydrocarbons+in+the+reservoir+zone+located+in+the+southeast+area+of+the+study+area.%0D%0A%0D%0AKeywords%3A+Spectral+Decomposition%2C+Continuous+Wavelet+Transform+(CWT)%2C+Inversion%2C+Petrophysical%0D%0A&rft.publisher=FAKULTAS+TEKNIK&rft.date=2018-05-22&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31802%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31802%2F9%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31802%2F15%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++Sri+Rizky%2C+1415051068++(2018)+KARAKTERISASI+RESERVOAR+MENGGUNAKAN+SPEKTRAL+DEKOMPOSISI+BERBASIS+CONTINUOUS+WAVELET+TRANSFORM+(CWT)%2C+SEISMIK+INVERSI+DAN+ANALISIS+PETROFISIKA%3A+STUDI+KASUS+CEKUNGAN+BONAPARTE.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F31802%2F