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All Journal Jurnal Migasian Akamigas Balongan Indramayu BAKTI BANUA : JURNAL PENGABDIAN KEPADA MASYARAKAT Petro : Jurnal Ilmiah Teknik Perminyakan JURNAL ABDI MASYARAKAT INDONESIA (JAMIN) Journal of Earth Energy Science, Engineering, and Technology Jurnal Migasian

Ratnayu Sitaresmi

Universitas Trisakti

Author-ID : 2707454

Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Public Health Social Sciences Other

Published : 12 Documents Claim Missing Document

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Articles

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The Use of Critical Porosity on Grouping of Rocks Quality of Sandstone Formations Sigit Rahmawan; Ratnayu Sitaresmi; Suryo Prakoso
Journal of Earth Energy Science, Engineering, and Technology Vol. 2 No. 1 (2019): JEESET VOL. 2 NO. 1 2019
Publisher : Penerbitan Universitas Trisakti

Research in the classification of rock quality formations has been carried out by many previous researchers with various methods using core sample data. However, from this research there are still many uncertainties that are found due to the difficulty of the data observed. The study uses the critical porosity for grouping the rock quality. The study obtained evidence on the surface conditions of critical porosity values obtained by the Nur method, et al. Using data P and S wave velocity data on measuring core samples surface pressure conditions that produce different rock quality based on different criticcal porosity ranges. Rock type formed based on the critical porosity has a relation to the pore geometry and pore structure that forms the linkages of each rock type. The similarity of the formation of rock types resulting from the value of critical porosity on rock types using the Wibowo and Permadi methods. In this study ten rock types were obtained. With the formation of rock quality groups that are different from the critical porosity values, further research is needed to find out whether the acoustic log in the data log that has P wave propagation speed can be used to determine the critical porosity value and determine the rock quality classification.

The Effect of Coconut Fibres, Banana Trunk Peel and Baggasse on the Lost Circulation of the Drilling Mud Rizki Akbar; Abdul Hamid; Ratnayu Sitaresmi
Journal of Earth Energy Science, Engineering, and Technology Vol. 2 No. 2 (2019): JEESET VOL. 2 NO. 2 2019
Publisher : Penerbitan Universitas Trisakti

Lost Circulation Materials (LCM) are specially designed not to damage the penetrating formation during handling of loss circulation problems and are very effective for drilling operations worldwide. Optimization of LCM composition may stop loss circulation effectively and protect the production zone from the invasion of mud filtrate. The concentration of lost circulation materials (LCM) is a key parameter to determine the effectiveness of LCM. In this study, laboratory equipment such as the Hamilton beech mixer, Fann VG meter and API filter press are used to evaluate the effectiveness of various LCMs in dealing with loss circulation. In this research, coconut fibre, banana tree skin, and bagasse are used as LCM in various concentrations. The mud losses were simulated using an 80 mesh shaker. The quality of the muddy rheological properties wasthe basic parameters to be evaluated. The test was carried out at 80oF and 200oF. The experimental results show that bagasse has the best performance both at 80oF and 200oF as LCM compared withcoconut fibres and banana trunk. The lost circulation of mud filtrate at 80oF and 200oF due to the addition of 2 gram bagasse is 34 ml and 40 ml, respectively.

Optimization of Drillstring Design to Produce More Stable Dynamic Drilling on Horizontal Drilling by Applying Different Stiffness Combinations Dundie Prasetyo; Ratnayu Sitaresmi; Suryo Prakoso
Journal of Earth Energy Science, Engineering, and Technology Vol. 2 No. 2 (2019): JEESET VOL. 2 NO. 2 2019
Publisher : Penerbitan Universitas Trisakti

Horizontal drilling technique is one of the methodologies that have been widely implemented recently to improve the production of oil and gas wells. Several directional drilling technologies can be utilized to drill the horizontal wells, vary from the simple mud motor technology to Bottom Hole Assembly (BHA) with the advanced motorized rotary steerable system. The most common challenges that are faced on horizontal drilling process are on the torque and the stick-slip throughout drilling process, which can be a technical limiter for the length of horizontal section that would be achieved. Stick-slip is the vibration that occurs due to cyclical rotation acceleration and deceleration of the bit, BHA or drill string. This speed fluctuation can be zero to rate of penetration (ROP) or far in excess of twice the rotational speed measured at the surface. Stick-slip can significantly decrease the ROP, increases tool failures and damage, affects borehole quality, and impacts the data acquisition. Several studies had been done on the stick-slip prevention and mitigation throughout creation of new technology and drilling parameters envelope throughout drilling operation, however no study has ever been done on the modification of the design and arrangement of the BHA itself to produce more stable BHA. Drill pipe is the longest component of the drill string and hence it has biggest contribution towards the drill string dynamic. This study will focus on the analysis of the combination of several designs of the drill-pipe and heavy weight drill-pipe (HWDP) that has different stiffness and characteristic to produce less vibration, more efficient drilling operation and to create zero impact on the data acquisition measured while drilling. FEA drilling dynamic simulator was used to optimize the drill sting configuration. The calculation is made from the depth of 750 m to 2801 m. Based on the drilling simulation results of FEA modeling, it is concluded that the minimum stiffness ratio to give stability of the drill string of Well-Z7 BHA and Well-Z6 BHA is 0.012175272 and 0.07366999, respectively.

Comparison of Rock Type Determination Based on Permeability Estimation and FZI Value in Upper Cibulakan Shaly Sand Formation, ASR Field Anditya Sapta Rahesthi; Ratnayu Sitaresmi; Sigit Rahmawan
Journal of Earth Energy Science, Engineering, and Technology Vol. 2 No. 3 (2019): JEESET VOL. 2 NO. 3 2019
Publisher : Penerbitan Universitas Trisakti

Rock permeability is an important rock characteristic because it can help determine the rate of fluid production. Permeability can only be determined by direct measurement of core samples in the laboratory. Even though coring gives good results, the disadvantage is that it takes a lot of time and costs so it is not possible to do coring at all intervals. So that the well log is required to predict the level of permeability indirectly. However, the calculation of permeability prediction using well log data has a high uncertainty value, so rock typing is required so that the calculation of permeability prediction becomes more detailed. This research was conducted in an effort to determine the Hydraulic Flow Unit (HFU) of the reservoir in the well that has core data using the Flow Zone Indicator (FZI) parameter and FZI value propagation on wells that do not have core data so that the type of rock and permeability value are obtained from every well interval. From the results of the study, the reservoirs on the ASR field can be grouped into six rock types. The six rock types each have permeability as a function of validated porosity by applying it at all intervals. After FZI is calculated from log data and validated with core data, it can be seen that the results of the method produce a fairly good correlation (R2 = 0.92). Furthermore, from the permeability equation values for each different rock type, the predicted permeability results are also quite good (R2 = 0.81).

Post Treatment Acidizing Study on Carbonate Rock with Wormhole Radius Method Ageng Warasta; Ratnayu Sitaresmi; Pri Agung Rakhmanto; Esaim Mustafa Abrahim Omar
Journal of Earth Energy Science, Engineering, and Technology Vol. 4 No. 1 (2021): JEESET VOL. 4 NO. 1 2021
Publisher : Penerbitan Universitas Trisakti

The problem that generally occurs in production activities is that wells in producing conditions has a low production rate. This could be due to the low permeability value of the reservoir or the increase of the skin factor of the reservoir due to formation damage. This matrix acidizing stimulation method is considered as an effective method in terms of activity costs and the success ratio in carbonate rocks. One of the successes of increasing the permeability around the well area depends on how far the wormholes are formed around the well. The results showed that the fractal dimension and wormhole radius model approach can be used to analyze the post treatment skin effect after validating the field data. Further analysis was carried out by involving limestone and dolomite reservoirs which have different characteristics in terms of porosity, permeability and fractal dimensions. The two reservoirs require different volumes of acid injection to produce the same reduction in skin factor. In this research, it is found that the parameters of permeability ratio, fractal dimensions, acid concentration, rock porosity and type of lithology affect the post treatment skin factor.

Co-Authors Abdul Hamid Ageng Warasta Anditya Sapta Rahesthi Aulia Alfath Bayu Satiyawira Cahaya Rosyidan Dalimunthe, Yusraida Khairani Danaparamita Kusumawardhani Dandi Octarizka Darmasetiawan Hakim Def Marshal Dundie Prasetyo Esaim Mustafa Abrahim Omar Guntur Herlambang Wijanarko Hari Karyadi Oetomo Harin Widiatni Harin Widyatni Havidh Pramadika Lia Mega Livia Ailen Dharma M. Taufiq Fathaddin M.G. Sriwahyuni Muhammad Taufiq Fathaddin, Muhammad Taufiq Onnie Ridaliani, Onnie Pri Agung Rakhmanto puri wijayanti Rizki Akbar Sigit Rahmawan Sugiatmo Kasmungin Suryo Prakoso, Suryo

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