Comparative study using seismic P-wave velocity and acoustic impedance parameter to pore pressure distribution: Case study of North West Java Basin

B. T. Dewantari, Supriyanto, I. S. Ronoatmojo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

PS Field is exploration field that located in the onshore of Northwest Java Basin. Exploration activities in PS Field were commenced in 1985 when TR-1 and TR-2 as two exploratory well were drilled. PS Field is an exploration field where needs a lot of observations to regarding the spread of pressure in the field. In the northern wells there has been a kick and lost circulation event during drilling due to errors in determining the drilling mud weight. In addition, there are abnormal pressure below the surface. These problems may occur because pore pressure prediction was not accurate at that time before drilling. In order to overcome these problems, we have performed a research for predicting pore pressure. Pore pressure prediction below the surface can be determined by using well log or seismic data. Pore pressure prediction in this research are done by using a method developed by Eaton (1975). The calculation result of pore pressure in this research are calibrated by well pressure data that consist of DST data and drilling mud pressure value over normal trend on the well data. This study uses several techniques applied to pore pressure in three different formation that are Baturaja, Talang Akar and Mid Main Carbonate (Part of Upper Cibulakan). Normal Compaction Trend (NCT) are analyzed in each formation due to different lithology. The post-stack seismic data 2D inversion process was used to generate AI section and velocity section, then combined to well log data to generate distribution of pore pressure. The blind test was also applied to determine which parameters is better to distribute pore pressure, where this model will be useful to the future drilling program in the PS Field.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
EditorsRatna Yuniati, Terry Mart, Ivandini T. Anggraningrum, Djoko Triyono, Kiki A. Sugeng
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417410
DOIs
Publication statusPublished - 22 Oct 2018
Event3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017 - Bali, Indonesia
Duration: 26 Jul 201727 Jul 2017

Publication series

NameAIP Conference Proceedings
Volume2023
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
CountryIndonesia
CityBali
Period26/07/1727/07/17

Keywords

  • Acoustic Impedamce
  • Eaton Methods
  • Pore Pressure
  • Seismic Inversion

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    Dewantari, B. T., Supriyanto, & Ronoatmojo, I. S. (2018). Comparative study using seismic P-wave velocity and acoustic impedance parameter to pore pressure distribution: Case study of North West Java Basin. In R. Yuniati, T. Mart, I. T. Anggraningrum, D. Triyono, & K. A. Sugeng (Eds.), Proceedings of the 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017 [020274] (AIP Conference Proceedings; Vol. 2023). American Institute of Physics Inc.. https://doi.org/10.1063/1.5064271