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Journal : Journal of Earth Energy Science, Engineering, and Technology

Application of Pressure Type Curve Matching for Characterizing the Naturally Fractured Reservoir Sri Feni Maulindani; Doddy Abdassah; Taufan Marhaendrajana; Suryo Prakoso; Muhammad Taufiq Fathaddin
Journal of Earth Energy Science, Engineering, and Technology Vol. 4 No. 1 (2021): JEESET VOL. 4 NO. 1 2021
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1875.102 KB) | DOI: 10.25105/jeeset.v4i1.9060

Abstract

Naturally fractured reservoirs have an important role in the production and reserves of hydrocarbons, where more than 40% of the oil and gas reservoir production comes from this reservoir type. There are two systems that affect the production mechanism in this reservoir, namely the matrix as a fluid source and fractures as a fluid transfer network to the wellbore. This study discusses the characterization of naturally fractured reservoirs using curve type matching. In this study, the Warren and Root model is applied to create a reservoir model that applies the fluid flow mechanism from the matrix to the fracture with pseudo steady state interporosity flow. Pressure transient analysis is commonly known and widely used by reservoir engineers as a tool to identify reservoir characteristics, where there are two important parameters that influence reservoir productivity, namely the ratio of the storativity coefficient (omega) and the interporosity flow coefficient (lamda). Based on the results of the analysis, it is found that the coefficients are strongly affected by the values of porosity fracture and permeability fracture also the productivity of the reservoir.
Evaluation of the Performance of Injection Wells in EX Structure Zona Nuansa Antariksa; Sonny Irawan; Dyah Rini Ratnaningsih; Taufan Marhaendrajana; Rini Setiati; Muhammad Taufiq Fathaddin
Journal of Earth Energy Science, Engineering, and Technology Vol. 5 No. 3 (2022): JEESET VOL. 5 NO. 3 2022
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jeeset.v5i3.14643

Abstract

One of the efforts that can be done to evaluate the performance of water injection in a field is by monitoring the injector wells. Observations can be made by looking at the flow rate and injection pressure at each injector well. The response given by each injection well will be able to represent the injection performance on a field scale. The EX structure is a structure that has been produced for more than 40 years. In addition, water injection has also been applied for approximately 16 years. There are four injection wells operating in this EX structure with an average injection flow rate of 3000-8000 bwipd per well. Evaluation of injection well performance is carried out by conducting a Hall Plot on each injection well from the start of the injection process to the last data obtained. Based on the evaluation results, it was found that there was plugging in the EA-IIS and EJ-IVS injection wells. Stimulation activity is needed in both wells to restore the well injection capability. Meanwhile, for the EA-IS and EB-IIL injection wells, there are no significant problems in those wells so they can still function properly as injection wells.