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Abstrak :
[Lapangan X merupakan lapangan mature yang berada di Cekungan Sumatera Tengah. Lapangan ini memiliki struktur antiklin produk dari reverse oblique-slip fault yang membentuk zona patahan di sisi Barat Lapangan X. Zona ini terbukti menghasilkan hidrokarbon ditunjukan oleh sumur produksi X-027, X-153 dan X 154. Sehingga zona patahan ini memiliki potensi untuk di eksplorasi lebih lanjut. Namun, kondisi seismik di zona ini chaotic sehingga sulit untuk menginterpretasikan zona patahan. Penelitian ini akan menggunakan metode geoelectric IVEL dan continuous wavelet transform (CWT) untuk mendapatkan informasi keberadaan hidrokarbon di zona patahan Lapangan X. Geoelectric IVEL (Inversion Vertical Electrical Logging) menggunakan metode vertical sounding schlumberger yang diolah untuk menghasilkan penampang resistivitas medium. Hasil penampang resistivitas medium pada penelitian ini menunjukkan adanya kemiripan nilai resitivitas dengan nilai log resistivitas sumur untuk zona reservoar 350sd dan 550sd (10-20 ohmm). Nilai resistivitas ini terlihat juga di zona patahan yang dijadikan indikator hidrokarbon. Hasil dalam domain kedalaman membantu dalam interpretasi kedalaman reservoar di zona patahan. Analisis continuous wavelet transform (CWT) pada penelitian ini menunjukan amplitudo tinggi pada frekuensi rendah 5-20 Hz dan merupakan indikasi adanya hidrokarbon. Amplitudo tinggi pada frekuensi rendah telihat juga di zona patahan, pada posisi dimana IVEL menunjukan nilai resistivitas sebagai indikator. ......Hidrocarbon X field is a mature field in Central Sumatera Basin. It has anticline structure as a result of reverse oblique-slip fault that produces fault zone in the North side of X Field. It is proved hydrocarbon with the production well X-027, X-153 and X-154. However, it is very difficult to interpret the fault zone with the available seismic data because of the chaotic seismic condition in fault zone. This study uses Ivel Geoelectric method and Continuous Wavelet Transform (CWT) to get hydrocarbon indicator in fault zone. Geoelectric IVEL (Inversion Vertical Electrical Logging) using vertical sounding schlumberger is processed to get medium resistivity section. Medium resistivity section from geoelectrical IVEL at reservoir zone showes similar resistivity value with resistivity log (10-20ohm) for reservoar 350sd and 550sd. This value is showed in fault zone as hydrocarbon indicator. Medium resistivity geoelectrical IVEL is depth domain. It is helpful for interpretation of reservoir depth at fault zone, that is not able to be done by seismic. Continuous wavelet transform (CWT) showes high amplitude at low frequency (5-20Hz) as hydrocarbon indicator. High amplitude at low frequency is showed in fault zone where IVEL showes the hydrocarbon indicator;X field is a mature field in Central Sumatera Basin. It has anticline structure as a result of reverse oblique-slip fault that produces fault zone in the North side of X Field. It is proved hydrocarbon with the production well X-027, X-153 and X-154. However, it is very difficult to interpret the fault zone with the available seismic data because of the chaotic seismic condition in fault zone. This study uses Ivel Geoelectric method and Continuous Wavelet Transform (CWT) to get hydrocarbon indicator in fault zone. Geoelectric IVEL (Inversion Vertical Electrical Logging) using vertical sounding schlumberger is processed to get medium resistivity section. Medium resistivity section from geoelectrical IVEL at reservoir zone showes similar resistivity value with resistivity log (10-20ohm) for reservoar 350sd and 550sd. This value is showed in fault zone as hydrocarbon indicator. Medium resistivity geoelectrical IVEL is depth domain. It is helpful for interpretation of reservoir depth at fault zone, that is not able to be done by seismic. Continuous wavelet transform (CWT) showes high amplitude at low frequency (5-20Hz) as hydrocarbon indicator. High amplitude at low frequency is showed in fault zone where IVEL showes the hydrocarbon indicator;X field is a mature field in Central Sumatera Basin. It has anticline structure as a result of reverse oblique-slip fault that produces fault zone in the North side of X Field. It is proved hydrocarbon with the production well X-027, X-153 and X-154. However, it is very difficult to interpret the fault zone with the available seismic data because of the chaotic seismic condition in fault zone. This study uses Ivel Geoelectric method and Continuous Wavelet Transform (CWT) to get hydrocarbon indicator in fault zone. Geoelectric IVEL (Inversion Vertical Electrical Logging) using vertical sounding schlumberger is processed to get medium resistivity section. Medium resistivity section from geoelectrical IVEL at reservoir zone showes similar resistivity value with resistivity log (10-20ohm) for reservoar 350sd and 550sd. This value is showed in fault zone as hydrocarbon indicator. Medium resistivity geoelectrical IVEL is depth domain. It is helpful for interpretation of reservoir depth at fault zone, that is not able to be done by seismic. Continuous wavelet transform (CWT) showes high amplitude at low frequency (5-20Hz) as hydrocarbon indicator. High amplitude at low frequency is showed in fault zone where IVEL showes the hydrocarbon indicator.;X field is a mature field in Central Sumatera Basin. It has anticline structure as a result of reverse oblique-slip fault that produces fault zone in the North side of X Field. It is proved hydrocarbon with the production well X-027, X-153 and X-154. However, it is very difficult to interpret the fault zone with the available seismic because of the chaotic seismic condition in fault zone. This study uses IVEL Geoelectric method and Continuous Wavelet Transform (CWT) to get hydrocarbon indicator in fault zone. Geoelectric IVEL (Inversion Vertical Electrical Logging) using vertical sounding schlumberger is processed to get medium resistivity section. Medium resistivity section from geoelectrical IVEL at reservoir zone showes similar resistivity value with resistivity log (10-20ohm) for reservoar 350sd and 550sd. This value is showed in fault zone as hydrocarbon indicator. Medium resistivity geoelectrical IVEL is depth domain. It is helpful for interpretation of reservoir depth at fault zone, that is not able to be done by seismic. Continuous wavelet transform (CWT) showes high amplitude at low frequency (5-20Hz) as hydrocarbon indicator. High amplitude at low frequency is showed in fault zone where IVEL showes the hydrocarbon indicator, X field is a mature field in Central Sumatera Basin. It has anticline structure as a result of reverse oblique-slip fault that produces fault zone in the North side of X Field. It is proved hydrocarbon with the production well X-027, X-153 and X-154. However, it is very difficult to interpret the fault zone with the available seismic data because of the chaotic seismic condition in fault zone. This study uses Ivel Geoelectric method and Continuous Wavelet Transform (CWT) to get hydrocarbon indicator in fault zone. Geoelectric IVEL (Inversion Vertical Electrical Logging) using vertical sounding schlumberger is processed to get medium resistivity section. Medium resistivity section from geoelectrical IVEL at reservoir zone showes similar resistivity value with resistivity log (10-20ohm) for reservoar 350sd and 550sd. This value is showed in fault zone as hydrocarbon indicator. Medium resistivity geoelectrical IVEL is depth domain. It is helpful for interpretation of reservoir depth at fault zone, that is not able to be done by seismic. Continuous wavelet transform (CWT) showes high amplitude at low frequency (5-20Hz) as hydrocarbon indicator. High amplitude at low frequency is showed in fault zone where IVEL showes the hydrocarbon indicator]

Abstrak :
ABSTRAK
Kualitas data seismik yang diakuisisi di atas endapan vulkanik di wilayah Banjar, Jawa Barat, relatif rendah. Upaya lain untuk mendapatkan model bawah permukaan adalah menggunakan metode MT dalam bentuk distribusi nilai resistivitas. Pemodelan tersebut didukung oleh peta geologi serta data tambahan berupa informasi contoh batuan pada studi sebelumnya. Sehingga, penelitian ini dapat digunakan untuk eksplorasi hidrokarbon pada wilayah observasi di kota Banjar-Pangandaran, provinsi Jawa Barat. Data MT pada penelitian ini terdiri dari tiga lintasan dengan total stasiun perekaman data sebanyak 179 titik. Pada line-1 yang terdiri dari 47 titik data merupakan cross-section pada lintasan lainnya, memperlihatkan suatu bentuk endapan sedimen yang ditandai oleh nilai resistivitas rendah dan semakin meningkat ke bawah. Pada line-8 yang terdiri dari 62 titik data, merupakan lintasan yang sejajar dengan line-4 yang terdiri dari 70 titik data. Kesejajaran antara kedua lintasan itu memperlihatkan pemodelan sebaran resistivitas di kedua lintasan tersebut tidak jauh berbeda. Pada koreksi crosspower di beberapa stasiun perekaman memiliki hasil trend kurva resistivitas yang berbeda sesuai dengan kondisi geologi di wilayah tersebut. Hasil inversi pada line-4 dan line-8 menunjukkan beberapa patahan-patahan menunjam kebawah yang disebut sebagai patahan Gabon dengan beberapa formasi-formasi yang berpotensi sebagai reservoir. Formasi-formasi tersebut diantaranya formasi Jampang dengan visual porositas 10-20 %, formasi Kalipucang dengan visual porositas 10-15 %, formasi Pamutuan dengan visual porositas 17 % dan formasi Bentang dengan visual porositas 13-26 %. Informasi data visual porositas pada contoh batuan ini digunakan untuk memodelkan potensi reservoar di bawah wilayah penelitian serta didukung oleh peta geologi untuk menginterpretasikan kondisi-kondisi geologi yang terjadi di setiap lintasan

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ABSTRACT
The quality of the seismic data in volcanic deposits at Banjar, West Java, is relatively low. Another attempt to get beneath the surface of the model is using the MT method in the form of distribution of resistivity values. The modeling is supported by geological maps as well as additional data in the form of information rock samples in previous studies. Thus, this study could be used for exploration of hydrocarbons in the observation area at Banjar-Pangandaran, West Java province. In this study, the MT data consists of three lines with total station data recording is 179 points. In the line-1 consists of 47 data points that is cross-section on the other line, showing sediments formation that have characterized by low resistivity values and the deeper formation show the increased of resistivity. In the line-8 consist of 62 data points, a trajectory parallel to the line-4 consist of 70 data points. The parallels trajectory modeling shows not really different resistivity value distribution in both these line. The crosspower correction in several recording stations have curve resistivity trend results according to different geological conditions at that region. Inversion results on line 4 and line 8 shows several down subduction faults, called as Gabon fault with some formations that have the potential as a reservoir. These formations include Jampang formation with visual porosity of 10-20%, Kalipucang formation with visual porosity of 10-15%, Pamutuan formation with 17% visual porosity and Bentang formations with 13-26% visual porosity. Information of visual data porosity rock samples is used to potential reservoir modelling beneath the study area and supported by geological maps to interpret the geological conditions in each line

Abstrak :
Analisis potensi shale hidrokarbon dengan pendekatan data geokimia dan interpretasi seismik telah berhasil dilakukan pada lapangan FH, Sub-Cekungan Jambi. Parameter dalam eksplorasi shale hidrokarbon yang mengandung Total Organic Content TOC lebih tinggi dari 1, Indeks Hidrogen HI lebih tinggi dari 100, Vitrinite Reflectance Ro lebih tinggi dari 1,3 untuk dry gas, Net Shale Thickness lebih dari 75, dan kerogen dikelompokkan menjadi tipe I, II atau III. Penelitian ini berlokasi di Sub-Cekungan Jambi, yang terletak di provinsi Jambi, bagian timur pulau Sumatera. Sub-Cekungan Jambi adalah Sub-Cekungan dari Cekungan Sumatera Selatan. Berdasarkan petroleum sistem di wilayah Sub-Basin Jambi, source rock berasal dari bentuk Formasi Lahat berupa Formasi Lacustrine dan Talang Akar berupa terrestrial coal dan coal shale. Penelitian ini bertujuan untuk mengetahui dan menganalisis potensi shale hidrokarbon di Sub-Cekungan Jambi. Formasi Talang Akar menjadi fokus penelitian ini. Talang Akar memiliki sumber batuan yang berkisar dari yang baik sampai yang sangat bagus dan sangat potensial mulai dari 1,5 sampai 8 wt TOC di daerah Sub-Cekungan Jambi. Inversi seismik adalah teknik pembuatan model geologi bawah permukaan dengan menggunakan data seismik sebagai masukan dan data geologi sebagai kontrol. Hasil analisis menunjukkan bahwa nilai TOC berada pada kisaran 0,5 - 1,5 wt dan Ro berada pada kisaran 0,51 - 1,1. Hasil analisi parameter petrofisika menunjukkan nilai porositas di bawah 10 dan saturasi air lebih dari 50. Interpretasi seismic menunjukkan daerah yang memiliki potensi berada pada nilai akustik impedan di atas 7800 m/s g/cc. Berdasarkan peta persebaran akustik impedan, daerah Timur Laut dan Tenggara merupakan daerah dengan potensi shale hidrokarbon yang baik. ......Analysis of the potential of hydrocarbon shale with geochemical data and seismic interpretation has been successfully done in field FH, Jambi Sub Basin. The parameters in the exploration of shale hydrocarbon contains Total Organic Carbon TOC is higher than 1, Index Hydrogen HI is higher than 100, Vitrinite Reflectance Ro is higher than 1.3 for window dry gas, the Net shale Thickness is over 75, and kerogen is classified into type I, II or III. This study are is located in Jambi sub basin, which is situated in the province of Jambi, the eastern part of the Sumatra island. Jambi sub basin is a sub basin of South Sumatra Basin. Based on the petroleum system in the area of Jambi Sub Basin, source rocks derived from the form Lahat Formation lacustrine and Talang Akar Formation in the form of terrestrial coal and coal shale. This study aims to identify and analyze the potential of shale hydrocarbons in the Jambi Sub Basin. Talang Akar Formation is the focus of this study. Talang Akar has a source rock that is ranged from good to excellent and highly potential ranging from 1.5 to 8 wt TOC in Sub Basin area Jambi. Seismic inversion is a technique of making the subsurface geological models using seismic data as an input and geological data as control. Analysis shows that TOC values are in the range of 0.5 ndash 1.5 wt and Ro is in the range of 0.51 ndash 1.1. petrophysic parameter shown that area having porosity less than 10 and water saturation more than 50. Seismic interpretation showing that area interest have acoustic impedance more than 7800 m s g cc. Based on the Acoustic Impedance distribution map, Northeast and Southeast is an area with good shale hydrocarbon potential.

Abstrak :
Lapangan X merupakan lapangan produksi minyak dan gas bumi yang terletak pada cekungan Sumatera Tengah Daerah. Zona target hidrokarbon berada pada formasi Bekasap. Formasi Bekasap merupakan salah satu batuan reservoar yang utama di cekungan Sumatera Tengah. Penelitian ini telah dilakukan analisis inversi seismik dan analisis atribut seismik untuk mengidentifikasi persebaran reservoar dan dapat menganalisis keberadaan hidrokarbon pada daerah penelitian. Inversi seismik dan atribut seismik dilakukan dengan menggunakan data seismik 3D Post Stack dan data log dari 3 sumur. Data tersebut dianalisa dengan menggunakan metode inversi dan ekstraksi atribut. Perpaduan antara atribut seismik dan inversi seismik efektif untuk dijadikan sebagai landasan dalam mengambil tindakan terhadap reservoar. Dari perpaduan tersebut berupa peta persebaran reservoar batu pasir berdasarkan analisa inversi model based dan analisa atribut seismik menggunakan atribut Root Mean Square (RMS), Atribut Envelope dan Instantaneous Frequency. Berdasarkan hasil pengolahan dan interpretasi dari penelitian lapangan X, maka didapatkan nilai impedansi akustik yang tinggi sebesar 6200-7200ft/s yang intepretasikan sebagai batu pasir, Dimana pada nilai AI yang tinggi menunjukkan sand dan impedansi akustik rendah sebesar 5600-6200 ft/s yang diintepretasikan sebagai batu lempung. Dimana pada nilai AI yang rendah menunjukan shale. ......Field X is an oil and gas production field located in the Central Sumatra Regional Basin. The hydrocarbon target zone is in the Bekasap formation. Bekasap Formation is one of the main reservoir rocks in the Central Sumatra basin. This research has conducted seismic inversion analysis and seismic attribute analysis to identify reservoir distribution and can analyze the presence of hydrocarbons in the study area. Seismic inversion and seismic attributes were carried out using 3D Post Stack seismic data and log data from 3 wells. The data is analyzed using inversion methods and attribute extraction. The combination of seismic attributes and effective seismic inversion is used as the basis for taking action on the reservoir. From this combination in the form of sandstone reservoir distribution map based on model based inversion analysis and seismic attribute analysis using the Root Mean Square (RMS) attribute, Envelope Attribute and Instantaneous Frequency attribute. Based on the results of processing and interpretation of X field research, the high acoustic impedance value of 6200-7200ft/s is interpreted as sandstone, where at high AI values ​​it shows sand and low acoustic impedance of 5600-6200 ft/s interpreted as clay stones. Where the low AI value shows shale.

Abstrak :
Integrasi dari data sumur dan data seismik sangat berguna untuk mendapatkan interpretasi yang baik dalam proses eksplorasi hidrokarbon. Beberapa metode yang mengintegrasikan kedua data tersebut antara lain, metode inversi impedansi akustik dan metode seismik multiatribut. Metode inversi impedansi akustik dilakukan untuk memprediksi informasi sifat fisis bumi berdasarkan informasi rekaman seismik yang diperoleh. Pada metode ini, sifat fisis bumi yang dimodelkan adalah impedansi akustik. Sedangkan metode seismik multiatribut metode yang menggunakan lebih dari satu atribut untuk memprediksi beberapa properti fisik dari bumi. Metode ini digunakan untuk memprediksi persebaran porositas dari volum seismik. Kedua metode ini digunakan untuk mengkarakterisasi reservoar pada lapangan F3 di Belanda yang diduga terdapat akumulasi hidrokarbon. Hal ini terlihat dari adanya fenomena bright spots dan gas chimneys pada bawah permukaan yang berasosiasi dengan adanya akumulasi gas pada lapangan tersebut.

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Integration of well and seismic data are very useful to get good interpretation in the process of hydrocarbon exploration. Several methods that integrate both data are seismic inversion and multi-attribute seismic. Acoustic impedance inversion method is used to predict the physical properties of the earth based on information obtained by the seismic record. Multi-attribute seismic method is seismic method that uses more than one attribute to predict physical properties of the earth. This method is used to predict the distribution of porosity from seismic volume, which are applied to characterize the reservoir in the field F3 in the Netherland. The field has been indicated to have an accumulation of hydrocarbons. This indication can be seen from the phenomena of bright spots and gas chimneys on the sub-surface expressions which is associated with the accumulation of gas in the field.

Abstrak :
ABSTRACT
South and Central Palembang Sub-basins have shale hydrocarbon which are considerably promising in the Talang Akar and Lemat/Lahat Formations. Seismic interpretation results shows potential of shale hydrocarbon scattered in several areas around the Rukam-l, Kemang-l, SInga-l and Tepus'l wells. Generally, thermal modelingg results indicate early maturity of oil on the value of Ro= 0.6% at about 2000m depth (h), the oil generation value Ro=(0.7-0.9)% at between (2200 £ h<3100)m depth and the oil generation Ro values between (0.9-1.2)% at a depth between (3100-3500m, Talang Akar and Lahat/Lemat Formations have a shallow marine depositional environment with Type II/III kerogen and lacustrine with Type III kerogen respectively. Based on advanced seismic data processing (seismic attributes and spectral decomposition) these areas are expected to have TOC>value2%. The calculation (P-50) of potential unconventional oil and gas recources at Talang Akar and Lahat/Lemat Formations is estimated to be fairly large (up tp 4200 MMBOE)

(Author)

Abstrak :
Isolat bakteri SM 1_7 merupakan mikroorganisme yang diisolasi dari habitat mangrove dan memiliki kemampuan untuk memanfaatkan hidrokarbon sebagai sumber energi. Penelitian sebelumnya menguji kemampuan bakteri SM 1_7 pada konsentrasi hidrokarbon 1 . Potensi kemampuan biodegradasi isolat bakteri SM 1_7 perlu diuji kembali dengan meningkatkan konsentrasi senyawa hidrokarbon. Penelitian ini bertujuan untuk menganalisis kemampuan biodegradasi isolat bakteri SM 1_7 pada konsentrasi minyak diesel 1,5 . Pengukuran pertumbuhan isolat bakteri SM 1_7 dilakukan menggunakan metode Total Plate Count TPC dan analisis degradasi senyawa hidrokarbon menggunakan metode GC/MS. Hasil pengukuran pertumbuhan menunjukkan bahwa isolat SM 1_7 mengalami peningkatan jumlah koloni dari 9,38 x 105 CFU/mL pada jam ke-0 menjadi 9,28 x 108 CFU/mL setelah inkubasi 48 jam. Hasil analisis biodegradasi senyawa hidrokarbon menunjukkan bahwa isolat SM 1_7 mampu mendegradasi beberapa senyawa alkana dengan panjang rantai karbon C12--C23, yaitu Dodecane 49,997 , tridecane 49,603 , tetradecane 13,880 , pentadecane 34,323 , hexadecane 9,247 , heptadecane 33,683 , heneicosane 61,143 , tricosane 51,453 , dan senyawa asam lemak hexadecanoic acid 75,467 dan octadecanoic acid 82,630. ......Bacterial isolate SM 1 7 was isolated from mangrove habitat and has the capability to utilize hydrocarbons as a carbon source. Previous research examined the capability of bacterial isolate SM 1 7 to degrade 1 v v hydrocarbon. The biodegradation potential of hydrocarbons from bacterial isolate SM 1 7 needs to be re examined by increasing the concentration of hydrocarbon. The objective of this research is to analyze the hydrocarbon degrading capabilities of bacteria isolate SM 1 7 in 1,5 v v diesel oil. Growth measurement of SM 1 7 bacterial isolate was performed using Total Plate Count TPC method, and analysis of hydrocarbon degradation was carried out by GC MS. The growth measurements show that the total number of bacteria increased from 9,38 x 105 CFU mL to 9,28 x 108 CFU mL after 48 hours incubation. Analysis of hydrocarbon compounds showed that bacteria isolate SM 1 7 is capable of degrading alkane hydrocarbon compounds with carbon chain length C12 C23, namely Dodecane 49,997 , tridecane 49,603 , tetradecane 13,880 , pentadecane 34,323 , hexadecane 9,247 , heptadecane 33,683 , heneicosane 61,143 , tricosane 51,453 , and fatty acid compounds hexadecanoic acid 75,467 and octadecanoic acid 82,63.

Abstrak :
Plastik merupakan senyawa polimer hidrokarbon petrokimia yang memiliki nilai tambah dan densitas energi yang tinggi. Namun plastik yang tidak diolah dengan baik menyebabkan berbagai pencemaran lingkungan. Maka proses konversi plastik menjadi bahan kimia dengan nilai tambah melalui perengkahan dengan metode katalitik pirolisis dikembangkan. Dalam penelitian ini dilakukan sintesis zeolit H/ZSM-5 dengan metode hidrotermal dan Low Temperature Synthesis (LTS) yang selanjutnya dikarakterisasi menggunakan XRD, FTIR, SEM, BET dan TGA. Kemudian dilakukan perengkahan pada plastik jenis Low Density Polyethylene (LDPE) dengan teknik thermalgravimetrik dengan rasio campuran antara LDPE dan Katalis (9:1). Didapatkan hasil yang diurutkan sesuai performa H/ZSM-5 H2 (∆T50 = 20.46oC) > H/ZSM-5 H1 (∆T50 = 20.26oC) > H/ZSM-5 M (∆T50 = 16.55oC) . Energi aktivasi didapatkan dengan menggunakan persamaan Arrhenius dan Coats-Redfern dengan orde reaksi sama dengan satu. Didapatkan energi aktivasi untuk H/ZSM-5 H2 209 kJ/mol, H/ZSM-5 H1 271 kJ/mol, dan H/ZSM-5 M 277 kJ/mol.

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Plastic is a petrochemical hydrocarbon polymer compound that has a high added value and high energy density. However, plastic that is not treated properly causes a variety of environmental pollution. Then the process of converting plastics into chemicals with added value through cracking with the pyrolysis catalytic method was developed. In this research, the synthesis of zeolite H / ZSM-5 using the hydrothermal method and Low Temperature Synthesis (LTS) was then characterized using XRD, FTIR, SEM, BET and TGA. . Then cracking is done on plastic type Low Density Polyethylene (LDPE) with thermalgravimetric technique with a mixture ratio between LDPE and catalyst (9: 1). The results are sorted according to performance H / ZSM-5 H2 (∆T50 = 20.46oC) > H / ZSM-5 H1 (∆T50 = 20.26oC)> H / ZSM-5 M (∆T50 = 16.55oC). The activation energy is obtained using the Arrhenius and Coats-Redfern equations with a reaction order equal to one. Activation energy obtained for H/ZSM-5 H2 209 kJ / mol, H /ZSM-5 H1 271 kJ / mol, and H/ZSM-5 H1 277 kJ / mol.