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Analisis Diagenesis Batupasir Formasi Talangakar Di Lapangan 'dbd', Cekungan Sumatera Selatan


Oleh : Dean Baby Darian

Info Katalog

Nomor Panggil : 837/TG/2017

Penerbit : FTKE - Usakti

Kota Terbit : Jakarta

Tahun Terbit : 2017

Pembimbing 1 : Denny Suwanda Djohor

Pembimbing 2 : Andy S.

Subyek : Cementation;Grain contact

Kata Kunci : grain contact, reservoir, silicyclastic, diagenesis, core, porosity, analisis


File Repositori
No. Nama File Ukuran (KB) Status
1. 2017_TA_GL_07212048_Halaman-judul.pdf 2140.72
2. 2017_TA_GL_07212048_Bab-1.pdf 928.13
3. 2017_TA_GL_07212048_Bab-2.pdf 1277.21
4. 2017_TA_GL_07212048_Bab-3.pdf 1431.59
5. 2017_TA_GL_07212048_Bab-4.pdf 5790.83
6. 2017_TA_GL_07212048_Bab-5.pdf 728.17
7. 2017_TA_GL_07212048_Daftar-pustaka.pdf 684.58
8. 2017_TA_GL_07212048_Lampiran.pdf 6864.64

P Penelitian dilakukan dengan menggunakan metode analisa core, petrografi, Scanning Electron Microscope (SEM), dikalibrasi dengan data X-Ray Diffraction (XRD). Dimana penilitian berada pada Sumur DB, Formasi Talang Akar, Cekungan Sumatera Selatan dimana termasuk kedalam batuan reservoir yang terbentuk pada fase synrift, sehingga memiliki lapisan yang tebal. Penebalan lapisan akan menghasilkan proses pembebanan pada lapisan di bawahnya dan akan memicu proses diagenesis. Dimana proses diagenesis disebabkan adanya kompaksi yang akan menghasilkan kontak butir point contact, concave-convex, long contact, hingga suture contact, yang kedua sementasi berupa illite, kaolinite dan quartz overgrowth hadir pada proses sementasi, yang ketiga disolusi, serta terjadinya penggantian mineral k.feldspar oleh illit serta kaolinit, menunjukkan pula proses diagenesis terjadi. Tahapan diagenesis yang berlangsung adalah eodiagenesis, dan mesodiagenesis, Yang menyebabkan berkurangnya nilai porositas dan permeabilitas dan mengakibatkan tingkat kualitas reservoir tergolong cukup hingga baik.

T The research was done by using core analysis method, petrography, Scanning Electron Microscope (SEM), calibrated with X-Ray Diffraction (XRD) data. The DB well is located in Talang Akar Formation, South Sumatera Basin, which is included in the reservoir rock formed in the synrift phase, thus having a thick layer. Layer thickening will result in a loading process in the underlying layer and will trigger the diagenesis process. Where the process of diagenesis is caused by the compaction which will result in the contact of the contact point, concave-convex , long contact point, to suture contact, the second cementation is illite, kaolinite and quartz overgrowth present in the cementation process, the third dissolution, feldspar by illite and kaolinit, also shows the process of diagenesis occurs. Stages of the ongoing diagenesis are eodiagenesis, and mesodiagenesis. That causes a decrease in porosity and permeability values and leads to a sufficient level of reservoir quality.

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