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Welcome to the Gutenberg Editor

Of Mountains & Printing Presses

The goal of this new editor is to make adding rich content to WordPress simple and enjoyable. This whole post is composed of pieces of content—somewhat similar to LEGO bricks—that you can move around and interact with. Move your cursor around and you’ll notice the different blocks light up with outlines and arrows. Press the arrows to reposition blocks…

Screen system design and performance evaluation

SCREEN SYSTEM DESIGN AND PERFORMANCE EVALUATION

Screen system design and performance evaluation involves placing a screen barefoot across the producing interval and blowing the reservoir fluid to produce through the screen slots whilst the formation sand is strained by the screen. Screen failures have been reported in many parts of the world especially for horizontal wells. This has led to a…

SAND CONTROL COMPLETION CAUSES OF SAND PRODUCTION AND PREDICTION TECHNIQUES INSTALLATION AND DESIGN

SAND CONTROL COMPLETION

Sand control completion/Well completion involves the design and installation of equipment and treatment/procedures necessary to bring a well into production to meet a company’s objectives of field development.

Therefore, reservoirs with sanding problems, sand control completion can be defined as the technology and practice involved in the management and control of…

ROTARY DRILLING

This section is focused mainly on the conventional rotary drilling method. A general introduction to new rig systems such as ram rig is also presented. There are a number of different drilling methods that have been utilized in the oil industry or are in their prototype stage of development. The oldest of the methods is Cable tool drilling method, which uses the percussion method.…

FORMATION DAMAGE

Formation damage can be defined as a measure of the reduction in the production capacity or injectivity of a given reservoir formation . This can be due to the combined effect of :

reduction in the formation absolute permeability

alteration in the relative permeability of the formation to a specific fluid

alteration in the viscosity of the mobile fluid

It is mainly a consequence…

Environmental Impact of Petroleum

Environmental impact of petroleum  is a major problem in Niger Delta, the Niger Delta is a home  to  some  30  million  people.  It occupies a  total  area  of  about   75,000  km  and  makes  up  7.5% of Nigeria’s  land  mass.  The  Niger  Delta  region  consist   of  nine oil-­producing  states  (Abia,  Akwa-­Ibom,  Bayelsa,  Cross-­River, Delta,  Edo,   Ondo,…

Structure of the Nigerian Petroleum Industry

Nigerian Petroleum Industry:UPstream

Nigerian Petroleum Industry as  would  be  expected  for  one  of the  largest reserves  holders and  petroleum  producers in  the world, Nigeria has  a  large and active  petroleum sector,  with  a large  number  of operators  and oil  services  companies. The  issue facing  Nigeria  is  not  one  of bringing   expertise  into  the country,  but  of  how  to…

ROUTINE CORE SCREENING AND PREPARATION

ROUTINE CORE DESCRIPTION

The purpose of routine core screening and preparation is the recognition of lithological, depositional, structural, and diagenetic features of whole or slabbed core. Qualitative and quantitative core descriptions provide the basis for routine core analysis sampling, facies analysis, and further reservoir studies such as reservoir quality and supplementary core analyses. A…

Field Sampling of core

FIELD SAMPLING OF CORE

Field sampling of recovered core material at the wellsite is not recommended. If it is necessary to sample immediately, precautions must be taken to minimize the exposure time of the core. Samplingshould be quick, efficient, and performed in accordance with sound safety practices. Always obtain samples using the least damaging or contaminating method available. The entire…

WELLSITE CORE HANDLING PROCEDURES

WELLSITE CORE HANDLING PROCEDURES

Several methods are available for wellsite core acquisition. Conventional, full-diameter, continuous coring techniques can be divided into two groups; those that employ a standard reusable steel inner barrel, and those that utilize disposable inner barrels or liners. Other coring methods such as the sidewall devices and wire line-retrieved coring apparatus obtain…

CASING AND CEMENTING PROGRAM DESIGN

DOWNLOAD:CASING AND CEMENTING MATERIAL

DOWNLOAD:CASING MATERIAL

INTRODUCTION

Cementing operations can be divided into two broad categories: primary cementing and remedial cementing. Cement is used to hold casing in place and to prevent fluid migration between subsurface formations. casing are Large-diameter pipe lowered into an openhole and cementedin place. The well designer must design casing…

Well planning in drilling system and operation

DOWNLOAD;WELL PLANNING

DOWNLOAD WELL PLANNING AND EXECUTION

DOWNLOAD RIGS ONSHORE AND OFFSHORE

OVERVIEW OF WELL PLANNING

well planning an oil/gas well plays a key role in  an overall field development the various aspects of which include:

1. Exploration to confirm the potential presence of hydrocarbons. This would normally include seismic exploration among other techniques. 2. Drilling a number…

DRILLING PROBLEM AND SOLUTION

DOWNLOAD:DRILLING PROBLEM AND SOLUTION

INTRODUCTION

The main objectives of every drilling operation as to avoid drilling problem are :

1. High drilling efficiency through the achievement of • Optimum penetration rate • Minimum downtime 2. Minimum operating cost 3. Effective safety 4. Environmental Impact

There are however a number of problems encountered in the hole which mitigate against the…

DRILLING METHODS – ROTARY DRILLING

DOWNLOAD:DRILLING METHOD INTRODUCTION

This section is focused mainly on the conventional rotary drilling method. A general introduction to new rig systems such as ram rig is also presented. There are a number of different drilling methods that have been utilized in the oil industry or are in their prototype stage of development.

  The oldest of the methods is Cable tool drilling method, which…

Download: Drilling fluid

Drilling mud in petroleum engineering, a heavy, viscous fluid mixture that is used in oil and gasdrilling operations to carry rock cuttings to the surface and also to lubricate and cool the drill bit. The drilling mud, by hydrostatic pressure, also helps prevent the collapse of unstable strata into the borehole and the intrusion of water from water-bearing strata that may…

Planning a Coring Program

1. PLANNING A CORING PROGRAM

A coring program begins with the premise that an investment will reap a reward. It progresses through a phase of exploring alternate sources of information; well tests, logs, previous cores, and cuttings or sidewall cores. Planning begins by listing the objectives of the coring program. Constraints in budget, location, and timing will be placed on the program. Hole…

National Petroleum Policy

The  purpose  of  this  document  is  to  define  the  policy  of  the  Federal   Government  of  Nigeria  in  respect  of  Nigeria’s  crude  oil  endowment,   establish  its  medium  to  long-­term  targets  for  the  development  of  its  crude   oil  endowment   and  record  strategies  to  be  pursued  to  ensure  the   successful  implementation  of  the Policy