Formation Evaluation for Jeribe Formation in the Jaria Pika Gas Field

Abdulrahman, Salam Sameer; Al-Kubaisi, Manal Shakir; Al-Sharaa, Ghazi H.

doi:10.46717/igj.53.2f.6ms-2020-12-29

Cited by 5 publications

(6 citation statements)

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“…The main controlling factors that influence the occurrence characteristics of movable fluids are demonstrated to be reservoir physical property, pore type, pore and throat radii, porethroat radius ratio, sorting coefficient, effective pore-throat volume, and clay mineral filling (Li, 2018). Similar studies on Iraqi reservoirs become increasingly important such as Abdulrahman et al (2020) on Jeribe Formation in Jeria Pika gas field, and Mamaseni (2020) on the Sargelu reservoir in Atrush oil field. The purpose of this work is to evaluate fluids mobility and its relations to the Mauddud reservoir petrophysical property.…”

Section: Introductionmentioning

confidence: 91%

Evaluation of Reservoir Fluids Mobility, Mauddud Reservoir (Albian), Khabbaz Oil Field, Kirkuk Area, NE Iraq

Al-Qayim

Al-Beyati

2021

IGJ

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The Albian Mauddud reservoir of the Khabbaz Oil Field is consisting of 170 m alternating shelf carbonates and pervasive dolomite horizons of coarse to fine crystalline mosaic. Core analysis and log measurements reveal the occurrence of three electrofacies units (A, B, and C) with variable petrophysical properties. Unit A with good reservoir quality shows average porosity of 18.8 % and average permeability of 27.5 md. The other two units (B and C) are less attractive and have an average porosity of 9.6 % and 9.2 % consequently. Pore size ranges between macro to meso types and related mainly to vugs, fractures and intercrystalline porosity, especially in the dolomite units. The reservoir fluids saturation, bulk volume, and mobility are evaluated using resistivity logs measurements and porosity logs (Neutron-Density porosities) in addition to other reservoir laboratory data. Calculations and cross data plotting of the related petrophysical parameters were applied to the three units of the Mauddud reservoir in seven wells of the field. It shows an overall good reservoir fluids mobility. Results indicate that the formation water of Khabbaz Oil Feld is a non-movable type especially for the crestal wells which make most of these wells produce water-free hydrocarbon. Variability within well’s hydrocarbon mobility is noticed and related to units and subunits lithology and porosity variation. Other variations seem to be related mainly to permeability, pores geometry and variability of water saturation in addition to the location of well with respect to oil pool within the field structure.

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Section: Introductionmentioning

confidence: 91%

Evaluation of Reservoir Fluids Mobility, Mauddud Reservoir (Albian), Khabbaz Oil Field, Kirkuk Area, NE Iraq

Al-Qayim

Al-Beyati

2021

IGJ

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“…Then, using the equation (Schlumberger, 1987in Abdulrahman et al, 2020, determine hydrocarbon saturation (Sh), which is defined as the portion of the pores that is not filled with water: Sh = (1-Sw) ( 16)…”

Section: Water and Hydrocarbon Saturationmentioning

confidence: 99%

“…Physical measurements from well logging are required to determine subsurface parameters. Log data is the kind of down-hole data that is most typically utilized for analyzing subsurface rocks and their physical characteristics.The basic goal of well log interpretation is to use drilling to assess the potential production of porous and permeable formations (Abdulrahman et al, 2020). Over 80% of Iraq's oil reserves are found in the country's most productive time period.…”

Section: Introductionmentioning

confidence: 99%

Petrophysical Evaluation of Mishrif Formation in X oilfield, southeastern Iraq

Alghafour

Al-Kubaisi

Jaafar

2022

IGJ

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Well logs data was analyzed and used to identify reservoir properties. The Mishrif Formation was sudivided into six units (MA, MB1, MB2, MC1, MC2 and MC3) with different potential characteristics. By using the MID method and M-N cross plots to determine the rock and mineral composition of the Mishrif Formation in the X oil field, it was found through the profiles that the Mishrif Formation consists largely of limestone, little dolomite and shale. Based on the CPI results of the two wells (XA and XB)it was noted that the units BM1, BM2 and MC1 reservoir units have good petrophysical properties as they had good porosity ranging from 0.1 to 0.19 with low values of water saturation (0.3-0.79) and shale volume (0.0295-0.070) respectively). Due to these characteristics these units are considered oil-bearing areas are among the most important units in the Mishrif Formation in the X field. while the other units (MA, MC2 and MC3) are considered non-reservoir units due to It has poor petrophysical properties.

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“…Tali and Farman, 2021 calculated the porosity of a carbonate reservoir in the south of Iraq using standard and statistical approaches. Abdulrahman et al (2020) evaluated the Jeribe Formation in Jaria pika gas field in northeast Iraq. These researches as well as other published articles, did not address the petrophysical and geomechanical characteristics of rocks in the area under study with relation to the fracability of the formation using data from vertical wells.…”

Section: Introductionmentioning

confidence: 99%

Integrating Petrophysical and Geomechanical Rock Properties for Determination of Fracability of the Iraqi Tight Oil Reservoir

Farouk

Alhaleem

2022

IGJ

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Tight oil reservoirs have been a concerned of the oil industry due to their substantial influence on oil production. Due to their poor permeability, numerous problems are encountered while producing from tight reservoirs. Petrophysical and geomechanical rock properties are essential for understanding and assessing the fracability of reservoirs, especially tight reservoirs, to enhance permeability. In this study, Saadi B reservoir in Halfaya Iraqi oil field is considered as the main tight reservoir. Petrophysical and geomechanical properties have been estimated using full-set well logs for a vertical well that penetrates Saadi reservoir and validated with support of diagnostic fracture injection test data employing standard equations and correlations. Subsequently, breakdown pressures are computed, and two fracturing models have been developed. The petrophysical analysis infers that the reservoir has poor properties, while the findings of the geomechanical properties indicate that the reservoir is brittle with ductile rock strata. These ductile strata underlay and overlay more brittle formations than the reservoir. The results from diagnostic fracture injection test DFIT are quite consistent with well logs results. The breakdown pressure reflects that this reservoir could easily be fractured by inserting pressure equal to 6250 psi. However, the fracturing model design parameters manipulates the fracture height confinement within Saadi Formation and its propagation to Hartha and/or Tanuma Formations. Therefore, the employment of petrophysical and geomechanical properties of the rocks assists in understanding the fracability of the formation and demonstrating the orientation and the fracture propagation direction.

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Formation Evaluation for Jeribe Formation in the Jaria Pika Gas Field

Cited by 5 publications

References 0 publications

Evaluation of Reservoir Fluids Mobility, Mauddud Reservoir (Albian), Khabbaz Oil Field, Kirkuk Area, NE Iraq

Evaluation of Reservoir Fluids Mobility, Mauddud Reservoir (Albian), Khabbaz Oil Field, Kirkuk Area, NE Iraq

Petrophysical Evaluation of Mishrif Formation in X oilfield, southeastern Iraq

Integrating Petrophysical and Geomechanical Rock Properties for Determination of Fracability of the Iraqi Tight Oil Reservoir

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