DETAIL KOLEKSI

Analisa uji pressure build up pasa sumur hydraulic fractured I-1 dengan metode horner dan pressure derrivative


Oleh : Ikhsan Darma Putra

Info Katalog

Nomor Panggil : 1080/TP/2019

Penerbit : FTKE - Usakti

Kota Terbit : Jakarta

Tahun Terbit : 2019

Pembimbing 1 : Suryo Prakoso

Pembimbing 2 : Ghanima Y.

Subyek : Oil well drilling

Kata Kunci : horner, pressure derrivative, IPR.


File Repositori
No. Nama File Ukuran (KB) Status
1. 2019_TA_TM_071001300233_Halaman-judul.pdf 2543.89
2. 2019_TA_TM_071001300233_Bab-1.pdf 721.41
3. 2019_TA_TM_071001300233_Bab-2.pdf 1579.96
4. 2019_TA_TM_071001300233_Bab-3.pdf 1220.6
5. 2019_TA_TM_071001300233_Bab-4.pdf 1530.08
6. 2019_TA_TM_071001300233_Bab-5.pdf 694.15
7. 2019_TA_TM_071001300233_Daftar-pustaka.pdf 884.31
8. 2019_TA_TM_071001300233_Lampiran.pdf 2894.13

S Sumur I-1 merupakan sumur produksi minyak dengan tipe reservoirhomogen dengan litologi batuan formasi sandstone. Sumur ini sudah cukup lamaberproduksi yaitu selama 24 tahun. Alaminya dengan rentang waktu produksiselama itu, tekanan reservoir menjadi turun (depleted) karena fluida reservoiryang secara kontinyu terkuras. Dengan tekanan reservoir yang menurun artinyalaju alir minyak ikut menurun. Oleh karena itu sumur ini dilakukan stimulasiHydraulic Fracturing. Dengan stimulasi tersebut diharapkan dapat meningkatkanlaju alir dan produktivitas sumur I-1. Untuk mengetahui performa laju alir sumuryang dilihat dari fungsi tekanan alir, maka dibuat kurva Inflow PerformanceRelationship (IPR). Kurva IPR dibuat berdasarkan dari data output hasil ujiPressure Build Up. Dari uji Pressure Build Up didapatkan data yang diperlukanuntuk menghitung efisiensi aliran, seperti permeabilitas, skin dan penurunantekanan dinding sumur (dPskin). Dari data tersebut selanjutnya dilakukanperhitungan terhadap tekanan laju alir dengan tekanan dasar alir sumur yang dapatdiplot menjadi kurva IPR. Dalam kasus ini, diketahui laju alir sumur saat ini(stimulated) sebesar 43 bopd dengan tekanan alir sumur 278.14 psi. Jika dilihatdari kurva IPR ada peningkatan laju alir sebesar kurang lebih 12 bopd padatekanan alir sumur yang sama. Perbandingan laju alir sebelum distimulasi adalahasumsi ketika sumur normal atau tidak mempunyai nilai skin. Secara teknisstimulasi berhasil dilakukan karena terdapat peningkatan produktivitas. Selainmengetahui produktivitas sumur, penelitian ini juga bertujuan menganalisakondisi reservoir nyata sesudah distimulasi Hydraulic Fracturing. Analisatersebut dilakukan dengan uji Pressure Build Up. Uji PBU dilakukan saat sumurditutup atau no flowing. Analisa dan perhitungan dilakukan dengan dua cara yaitumanual dan software. Cara manual dihitung dengan pendekatan Horner dansoftware dengan pendekatan Pressure Derrivative.

W Well of I-1 represents the dominant oil well that classified as homogeneousreservoir type and sandstone formation rock. This well has been producing forquite a long time, for 24 years. Naturally, with that long production time,reservoir pressure drops (depleted) because the reservoir fluid is continuouslydrained. With decreasing reservoir pressure, the oil flow rate also decreases.Therefore this well is carried out Hydraulic Fracturing stimulation. With thisstimulation it is expected to increase the flow rate and productivity of I-1 wells.To determine the performance of the well flow rate as seen from the function offlow pressure, an Inflow Performance Relationship (IPR) curve is made. The IPRcurve is based on the output data of the Test results of Pressure Build Up. Fromthe Pressure Build Up test, data is needed to calculate flow efficiency, such aspermeability, skin and decrease in well wall pressure (dPskin). From these data,then the calculation of the flow rate pressure with the well flow bottom pressurecan be plotted into the IPR curve. In this case, it is known that the well flow rate(stimulated) is 43 bopd with a well flow pressure of 278.14 psi. When viewed fromthe IPR curve there is an increase in flow rate of approximately 12 bopd at thesame well flow pressure. Comparison of the flow rate before stimulation is anassumption when the well is normal or does not have a skin value. Technically,stimulation is successful because there is an increase in productivity. In additionto knowing well productivity, this study also aims to analyze the condition of thereal reservoir after stimulated Hydraulic Fracturing. The analysis is carried outby testing Pressure Build Up. PBU test is carried out when the well is closed orno flowing. Analysis and calculations are carried out in two ways, namely manualand software. The manual method is calculated using the Horner approach andsoftware with a Pressure Derrivative approach.

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