Empirical Correlation Of Oil Effective Permeability As A Function Of Pressure

Project and Seminar Material for Petroleum Engineering

Project and Seminar Material for Petroleum Engineering


Abstract


A poor description of the reservoir characteristics usually poses a unique problem in exploration and production there by leading to poor development and management of a reservoir field to yield optimum profit required. An accurate description is thus a vital key to an improved field development planning and management. This study illustrates how an integration of empirically determine oil effective permeability data was correlated as a function of average reservoir pressure. This is to provide the reservoir engineer with another tool to help him appreciate the importance of empirically determined data in estimating some reservoir properties during oil field planning, development and management to ensure optimum production from the fields.


Chapter One


1.0 Introduction

Of all the formation parameters that petroleum Engineers use , permeability is one of the most important. Oil and Gas use both accurate and approximate permeability values. These values frequently are compared and correlated which are then used to make important conclusions about formation flow potential and for various aspect of reservoir management and development.

Rock formation permeability is one important flow parameter associated with subsurface production and injection .Its importance is reflected by the number of available technique (well-log evaluation, core measurements and well testing ) typically used to estimate it. The literature is full of comparison and correlations of permeability from these sources which are used to make important conclusions without proper regard to the interrelationship among them.

Permeability estimates by individuals techniques within the various permeability

sources can vary with the state of rock (in –Situ Environment), Fluid Saturation distribution flow direction etc. Correlation determines the degree of linear relationship between two variables at a time. Oil effective permeability is correlated as a function of pressure because some relationship exist between them and is found when a change in pressure result in a change in the oil permeability

value of the reservoir. Hence in this project topic titled Empirical Correlation of oil effective permeability, a comprehensive relationship between the two variables will be shown and new values will be predicted as well. This paper reviews the commercial available permeability estimation techniques and discusses the important factors that illustrate their interrelationships which allow meaningful permeability comparisons and correlations.


1.1 Statement Of The Problem

Over the years, Petroleum Production Engineers has been troubled with many problems of which its effects or outcomes gave a poor analysis of reservoir production that generally leads to financial loss and time particularly. An inadequate analysis and understanding of a particular reservoir unfavorably affects the overall success of petroleum production. A reservoir engineers generally have the greatest claim on the use of such data, they are also quite valuable to drilling and production specialist. In many cases, the laboratory analysis to get an accurate and more appropriate permeability (most especially the oil effective permeability) may never be available because of economic reasons.

Reservoir rock properties can be examined through the following ways

  1. Quality check laboratory analysis
  2. Inability to obtain a representative sample during core analysis
  3. Sample volume is sufficient to obtain a complete analysis
  4. Estimating the potential production rate of a reserve found in exploration prospect
  5. Error in laboratory analysis

From the problems above , there is need for generating empirical correlation to be used . This is due to the complications and complexities of formations which vary with location or places.


1.2 Objectives Of The Study

The principal aim of carrying out this project work and research involved is to investigate the effects of pressure on the computation of oil effective permeability for Niger Delta reservoirs which are usually sandstone formation. In addition to experimentally measured properties of the reservoir rock, it is necessary for a

petroleum engineer to determine these properties from empirically derived

correlation. Therefore this work seeks to achieve the following;

  1. To show establish the relationship between oil effective permeability and pressure
  2. To show the trend in the relationship between the oil effective permeability and pressure data
  3. To formulate suitable empirical equation using the oil effective permeability and average reservoir pressure data of a field located in Niger Delta.
  4. To determine the nature of the relationship between the two variables that is if it a positive, negative or zero correlation.
  5. To determine the correlation coefficient which measures the goodness of fit of the line of regression

1.3 Significance Of The Study

There is usually great margin of error when oil effective permeability values are predicted without pressure and saturation consideration. Therefore this work seeks to provide a correlation that will enable the engineer predict oil effective permeability value when given pressure values from well test analysis knowing that the nature and properties of the reservoir does not change. Since production

rate is a function of oil effective permeability, its determination will enable the engineer to predict the production rate of the producing well therefore helps in adequate planning. The correlation will quickly offer the engineer a guide or tool of what the oil effective permeability value will be like at any given pressure which will aid in the planning stage for the optimum design of the well and selection of down hole completion and surface facilities. This will enhance adequate planning for optimum production of the well.

This project work is essential as it exposes the relevance of a higher accuracy in making reservoir calculation as it affects production. Also with the knowledge of the correlated oil effective permeability value, viscosity, pore geometry, wettability, fluid distribution and saturation history which are function of oil effective permeability values can be determined and are relevance for the reservoir study. It is expected that the correlation will be useful in saving the cost and time expended in generating oil effective permeability values through laboratory analysis of the core samples.


1.4 Scope Of Study

As a result of the stringent measures in getting data from multinationals and limitation in time for this project work the result was based on the data collected from Niger Delta field. Also this work is restricted to the assessment of the effect of pressure on oil effective permeability not putting general consideration effect of other reservoir petro physical properties. The new empirical correlation developed is from the data gotten from oil producing well in Niger Delta. Also minimal effect of errors that could result when taking the readings is evident in the correlation.


Chapter Five


Conclusion And Recommendation

5.1 Conclusion

From the findings of this project work it becomes obvious that

  1. In any reservoir Engineering calculation and prediction ,we should not neglect correlation technique.
  2. Oil effective permeability value cannot be predicted without considering the average reservoir pressure which is directly affected by the saturation of the fluids in the reservoir.
  3. Empirical data are one of the greatest assets petroleum engineer has in studying the reservoir and its properties.
  4. Correlation technique is economically important because the time and money spent in carrying out other methods of determining the oil effective permeability value of a particular reservoir is minimized to a great extent.
  5. Diversities in regression types helps to determine the actual trend two data variables has.

5.2 Recommendation

Based on the results obtained in this study, the following recommendations are proposed,

  1. In analysis of a reservoir properties such prediction of oil effective permeability value as found in this project work, empirical data should never be neglected
  2. Pressure effect on oil effective permeability cannot be accurately studied and correlated without considering the saturation of that fluid and other properties in the reservoir.

Empirical Correlation Of Oil Effective Permeability As A Function Of Pressure


Project Material Download

3,000 Naira


The complete material will be sent to you in just 2 steps.

Quick & Simple…


Step One Purchase

Make payment of ₦3,000: through USSD Transfer, Bank Mobile App, ATM Transfer, or POS Transfer to:

Access Bank PlcAccount No.: 0811003731
Name: Samphina Academy
Account Type: Current

Or Click Here to pay with Debit Card

FOR CLIENTS OUTSIDE NIGERIA:
Click Here to pay with Debit Card ($15)
GHANA – Make Payment of 60 GHS to MTN MoMo, 0553978005, Douglas Osabutey 

  PAY WITH CRYPTOCURRENCY


Step Two Purchase

Send the following details through Text Message or WhatsApp Messenger | +234-8143831497

  • Payment Details 
  • Email Address 
  • Empirical Correlation Of Oil Effective Permeability As A Function Of Pressure

The complete material will be sent to your email address after receiving your payment information | T & C Apply


  Contact Our Help Desk


You may also like:

⚠️ Need a different topic? Perform a quick search



Get A Complete Business Plan For Any Business In Nigeria

Business Plan for Businesses in Nigeria

  Business Plans in Nigeria


Disclaimer


This research material “Empirical Correlation Of Oil Effective Permeability As A Function Of Pressure” is for research purposes and should be used as a guide in developing your research project / seminar work. For no reason should you copy word for word (verbatim) as samphina.com.ng will not be liable for any who copied the material.

The aim of providing this material is to reduce the stress of moving from one school library to another all in the name of searching for research materials. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works. According to Austin Kleon “All creative work builds on what came before”.

samphina.com.ng is only providing this material “Empirical Correlation Of Oil Effective Permeability As A Function Of Pressure” as a reference for your research. The paper should be used as a guide or framework for your own paper. The contents of this paper should be able to help you in generating new ideas and thoughts for your own research. Use it as a guidance purpose only.

Samphina Academy

Samphina Academy is an Online Educational Resource Center that is aimed at providing students with quality information and materials to aid them in succeeding in their academic pursuit.