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A New Practical Method for Predicting Equivalent Drainage Area of Well in Tight Gas Reservoirs
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Abstract<p>The tight gas is one of the main types of the unconventional gas. Typically the tight gas reservoirs consist of highly heterogeneous low permeability reservoir. The economic evaluation for the production from tight gas production is very challenging task because of prevailing uncertainties associated with key reservoir properties, such as porosity, permeability as well as drainage boundary. However one of the important parameters requiring in this economic evaluation is the equivalent drainage area of the well, which relates the actual volume of fluids (e.g gas) produced or withdrawn from the reservoir at a certain moment that changes with time. It is difficult to predict this equivalent drainage area of well in tight gas reservoir as it takes utterly long time for reservoir pressure to reach to the impermeable physical boundary of the reservoir. The effective drainage area, which grows with time during the transient period; and consequently it is much smaller than the physical drainage arear over the transient flow period in case of tight gas reservoir because of the low permeability. Consequently the production forecasting using physical drainage area (as generally considered for conventional reservoir) can results not only significant error in estimation but also mislead the decision making process.</p><p>In this paper however, a practical method for predicting the equivalent drainage area of a fractured well in tight gas reservoir is proposed. This method is based upon combined gas material balance equation and decline curve analysis. The developed method is validated against reservoir simulation results, which demonstrates that the proposed method is accurate enough to predict the equivalent drainage area, and may be considered as a practical tool for production forecasting for tight gas reservoir. Sensitivity analyses are carried out to investigate various factors, such as porosity, permeability, facture length on equivalent drainage area for fractured vertical well in tight gas reservoir. Based on the sensitivity study it is observed that the fracture half-length and the porosity have strong impact on the equivalent drainage area, and propagation of equivalent drainage area with time.</p>
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Publication Date
Fri Apr 04 2025
Journal Name
لارك
Difficulties in Forming Compound Sentences in Spanish for Arabic Speakers
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A sentence is a key part of Spanish grammar and serves as the fundamental unit in constructing discourse. However, foreign language learners, particularly Arabic speakers, may face complex aspects that hinder their understanding and correct use of sentences. Additionally, there are at least two linguistic approaches that describe the use of compound sentences: one considers the sentence as the basic unit for discourse analysis, while other studies, starting with Van Dijk (2003), emphasize the importance of understanding both the partial and holistic structure of discourse. Therefore, we consider the significance of reviewing the linguistic differences between the native language and Spanish as a potential cause of misunderstanding a

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Publication Date
Sun Oct 29 2023
Journal Name
Iraqi National Journal Of Nursing Specialties
General Social Function for Elderly in Geriatric Homes in Jordan
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Objectives: To assess general social factors for elderly in geriatric homes in Jordan.
Methodology: The study was conducted for clients residing in elderly homes. A purposive sample of (155)
residents were selected. Social resource scale by (Duck University Center) called (OARA) older adult resources
and services was used as tool for data collection. The questions extract data about family structure, patterns of
friends and visiting, availability of a confident, satisfaction with the degree of social interaction and availability
of a helper in the event of illness or disability and the program of trips in the houses.
Results: The findings revealed that the life expectancy for women is greater than for men. In respect to

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Publication Date
Mon Jan 01 2018
Journal Name
Complexity
Complexity Measures for Quantifying Changes in Electroencephalogram in Alzheimer’s Disease
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Alzheimer’s disease (AD) is a progressive disorder that affects cognitive brain functions and starts many years before its clinical manifestations. A biomarker that provides a quantitative measure of changes in the brain due to AD in the early stages would be useful for early diagnosis of AD, but this would involve dealing with large numbers of people because up to 50% of dementia sufferers do not receive formal diagnosis. Thus, there is a need for accurate, low-cost, and easy to use biomarkers that could be used to detect AD in its early stages. Potentially, electroencephalogram (EEG) based biomarkers can play a vital role in early diagnosis of AD as they can fulfill these needs. This is a cross-sectional study that aims to demon

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Publication Date
Wed Dec 11 2019
Journal Name
Journal Of The College Of Education For Women
Terrorism and Internal Displacement in Iraq: A Field Study in Baghdad
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    Terrorism is a serious problem for many societies today. This research aims to identify the impact of terrorism and displacement crisis on human security, which was a shock to the Iraqi society in terms of its impact on the psychological, social and economic conditions of the individual, family, and society. The variety of methods of carrying out the terrorist operations that resulted from the phenomenon of human displacement witnessed by Iraq since the middle of 2014. This phenomenon has its demographic, political and social dimensions.

    In order to achieve the goal of this study and the importance of the subject, the social survey method was used by selecting a sample of 200 IDPs in a compou

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Publication Date
Wed Mar 30 2022
Journal Name
Journal Of Educational And Psychological Researches
The Degree of Availability of Moral Values in the Arabic Language Textbook (Al-Mu’nes) For Grades Eleven and Twelve For Post-Basic Education in The Sultanate of Oman
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          The current study aimed to reveal the moral values available in the Arabic language textbook (Al-Mu’nes) for   grades eleven and twelve for post-basic education in the Sultanate of Oman. The researcher adopted the descriptive approach using the sentence as measuring unit in the analysis process. The five fields of moral values and their subcategories values represented the categories of the analysis. Iterations of values and the percentages of iteration were calculated in those textbooks. Moreover and the analysis and stability of the process were confirmed.

         After referring to previous studies, it was possible to de

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Publication Date
Tue Apr 18 2023
Journal Name
Al–bahith Al–a'alami
Media policy and its impact on the level of objectivity in the Iraqi media : A study from the communicators’ point of view in the Iraqi medi outlets for the period from (1/5/2021 to 1/9/2021)
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The research aims to reveal the impact of media policy in Iraqi media outlets on the level of objectivity in these outlets. A study from the communicators’ point of view where the researcher used a survey method on the communicators in media outlets to reveal the extent of media policies knowledge as well as the pressures exerted by this policy on communicators in media outlets. It also reveals the extent of their commitment to objectivity, neutrality in dealing with information and the way used to transfer it.
The research sample included (179) respondents from communicators in a range of Media outlets such as (Press, Radio, and Television), The researcher was careful with the diversity of the sample, and

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Publication Date
Tue Jan 29 2019
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
Factors Affecting in Planning of Current Expenditurs For Federal Public Budget of State: An Applied Research For ASample of Health Ministry Depatments
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Increasing interest in planning at the level of government units as a means to manage the physical and human resources, direct and invest in areas that would include an increase in the economies of the general government units that are part of the general economics of the state.The research problem lies in the introduction of the factors influencing the ongoing expenses that adversely affect the financial planning process at the level of the Ministry of Health Planning, which affects the quality of services provided to citizens, so I sought the researchers to study the reality of financial planning in some of the Ministry of Health and health departments through the analysis of current budgets and diagnose deviations in the implementatio

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Publication Date
Sat Jan 01 2011
Journal Name
Journal Of Baghdad College Of Dentistry
Assessment of the accuracy of a fifth generation apex locator (in vitro study)
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Background: The use of electronic apex locators for working length determination eliminates many of the problems associated with the radiographic measurements (interference of anatomical structures, errors in projection such as elongation or shortening, and lack of three-dimensional representation). Its most important advantage over radiography is that it measures the length of the root canal to the apical constriction, not to the radiographic apex. The aim of this study was to assess the accuracy of a new fifth generation apex locator (Joypex 5) in recording the apical constriction and comparing it with a third generation apex locator (Root ZX) in vitro. Materials and method: Twenty four single-rooted sound human premolars, extracted for t

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Publication Date
Tue May 31 2022
Journal Name
International Journal Of Research In Social Sciences & Humanities
A Critical Discourse Analysis Study of Silence in Selected Texts of Virginia Woolf
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BN Rashid, Social Sciences, 2022

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Publication Date
Sat Jan 01 2022
Journal Name
Malaysian Journal Of Medicine And Health Sciences
Severity of Coronavirus Disease 19: A Profile of Inflammatory Markers in Iraqi Patients
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