Search

Well I-25 of Field Jatibarang is an oil well that produces at 3746-3753 ft depth. The well perforation penetrates Pre Parigi unit of Cibulakan formation. The formation has porosity and permeability of 18 and 62 mD respectively. This specific unit is majorly consisted of limestone. I-25 has been indicated with CaCO3 scale and formation damage based on Stability Index method proposed by Stiff and Davis. The Stability index number obtained was +1.373 and skin factor was +0.85. Based on these numbers, it was then decided to perform matrix acidizing on I-25. Acid selection was based on the rock lithology. Chloride acid (HCl) was proposed due to its soluble products and high reactivity whenever the reaction involves limestone or dolomite. This paper's methodology begins with data acquisition, followed by calculation-based evaluation. The comparison of evaluation parameters ultimately tells if the stimulation succeeded or not. These parameters are as follows: flow rate, productivity index, inflow performance relationship, Skin factor, and flow efficiency,. Flow rate increased from 40 bfpd to 195 bfpd. Oil flow rate increased from 10 bopd to 35.3 bopd. Flow efficiency improved from 0.93 to 4.55 which indicates permeability improvement, primarily within the damage radius. Skin factor improved from +0.85 to -5.625, and transmissibility factor increased from 271 md-ft/cp to 276 md-ft/cp. Based on these numbers, it can be concluded that matrix acidizing performed on I-25 succeeded. [ABSTRACT FROM AUTHOR]

We are currently witnessing the beginning of the global food crisis and disturbances in the fertilizer market. On the other hand, on July 16, 2022, Regulation (EU) 2019/1009 of the European Parliament and of the Council for laying down rules on the placing on the market of EU fertilizer products establishes strict rules on the safety and quality of fertilizers and repealing Regulation (EC) 2003/2003. The paper presents the modeling of process parameters of multifunctional fertilizer, as a compound inorganic macronutrient fertilizer/liming material/soil improver, based on pyrophyllite shale (pyrophyllite), deposits Parsovići, Konjic, BiH, enriched with dolomite, BiH to achieve the formulation of Product Function Categories (PFC) in terms of the content of secondary macronutrients (CaO and MgO) accordance with Regulation (EU) 2019/1009. The biological efficiency of the newly formulated fertilizer was tested through vegetation trials with beets (Beta vulgaris var. Conditiva). [ABSTRACT FROM AUTHOR]

Acidizing of carbonate reservoir is a challenge to find optimum acidizing operation. Therefore, one of the most importance use acid to remove the damage of the near wellbore in the hole of the well. The main objective of this study to estimate technology, efficiency of productivity index (productivity decreases during production) and stimulate non- working but productive intervals in Mauddud Formation. Much of the world's oil and gas almost from Limestone and Dolomite Formations. Dolomites are similar to Limestone in Mauddud Formation with the exception that they generally action more slowly with hydrochloric acid (HCL). The problems and damage resulting from Formation can be very severe. Reduced permeability (K) due to the mobilization of the Formation material can shut off production itself. Four wells were used and the results obtained after the candidate wells selection for stimulation jobs will help the company to select the wells based on the model they choose. This paper shows the results of different acidizing methods with (selective acid treatment with coiled tubing packer, emulsified two phase retarded acid system, and combination of single phase retarded acid system with selective acid treatment and coiled tubing packer) for carbonate reservoir. Therefore acidizing can be used to improve productivity of production wells to reach two to three time of production oil well. Result show that the selective acid treatment with coiled tubing packer was most method to improve oil production in Badra Filed. [ABSTRACT FROM AUTHOR]

Kurrachine Dolomite (K.D) formation, which has Middle Triassic age, is considered as one of the most important formations in the northern Palmyrian sub-folding zone. It's existed in all places of the studied area, with thickness to be more than 500m, and depth to be approximately 2200m. Economic quantities of oil and gas were discovered in this formation in some tectonic units. Sedimentary burial, and geo-temperature histories for this formation were drown depending on real data from fourteen selected drilled wells in the study area, and then the sum of the time-temperature effects, were calculated, by using time-temperature Arrhenius index (ΣTTIArr), on the deferent types of kerogen, and the percent of the realized capacity on conversion into petroleum hydrocarbons were calculated. The results showed that K.D. formation may be only played partial role in forming hydrocarbons, and that only in some places in the studied area, while most of the petroleum hydrocarbons, reserved in this formation had been migrated from earlier formations. [ABSTRACT FROM AUTHOR]