This website uses cookies to ensure you have the best experience. Learn more

Water Derivative Plot Essay

1163 words - 5 pages

ANALYTICAL PLOTS FOR ANALYSING CONING & CHANNELING IN DIFFERENT RESERVOIRS OF UPPER INDUS BASIN OF PAKISTAN
Muhammad Osama Jafri (NED University), Hafiz Haleem ud Din Farooqi (NED University), Waleed Anwar Saleem (NED University)

Abstract Water and gas drive mechanisms pose different problems for a petroleum engineer. The most common tribulations encountered are water and gas coning, high permeability layer breakthrough and near wellbore water channeling. In order to identify and differentiate between these tribulations different techniques can be applied. In this extended abstract, the characteristic trends of log-log plots of WOR (Water Oil Ratio) vs. Time will be analyzed for ...view middle of the document...

This is called water coning. High permeability layers can cause premature water breakthrough to the well by providing a channel or a path of least resistance to the water. This results in the water bypassing potential production zones, thus reducing the overall recovery. This is called water channeling. Field experience showed successful water control design would not be the same for different mechanisms. If the wrong mechanism is diagnosed, the treatment could even harm the production instead of helping to improve it. Therefore, characterization of the different mechanisms is very important to ensure proper treatments are applied. One of the simplest characterization methods of differentiating between coning and channeling is the Chan Water Diagnostic Plots, introduced by K.S. Chan in the year 1995. The basic idea of the plots is that if the production history ratios (WOR/WGR/GOR) and their time derivatives (WOR’/WGR’/GOR’) are plotted on the log-log graph against time, the graph shows specific trends which can be used to identify what type of

2

ANALYTICAL PLOTS FOR ANALYSING CONING & CHANNELING IN DIFFERENT RESERVOIRS OF UPPER INDUS BASIN OF PAKISTAN

mechanism is responsible for the water production. For an oil well, if the slope of WOR’ is positive, it means that channeling is taking place. If the slope is negative, it indicates coning. In a new approach we tried, we used the plots to discern whether a spike in the WOR was due to change in the channeling or coning mechanism, or due to some other factor like reservoir pressure decline, skin buildup, choke size adjustment or gas lift etc. Analysis for Oil Reservoir A well XYZ from an Upper Indus Basin oil reservoir was chosen as a candidate for the analysis of water production. To accomplish this, Chan advices that first the entire production history of the well should be plotted. From the plot, definite stages of production should be separated and analyzed in more depth. The production history for the XYZ well is shown in Figure 11. Keep in mind that this data is not from the beginning of production so water is already being produced. Looking at the plot, we can define four different periods where sudden change is taking place. The first period comprises the first 8 days of the production data. This data is shown in the Figure 1-1. As this figure quite...

Other Papers Like Water Derivative Plot

Gsl Scientific Library Essay

4796 words - 20 pages gsl_sf_airy_Ai_deriv_e (double x, gsl mode t mode, gsl sf result * result ) [Function] [Function] These routines compute the Airy function derivative Ai′ (x) with an accuracy specified by mode. double gsl_sf_airy_Bi_deriv (double x, gsl mode t mode ) int gsl_sf_airy_Bi_deriv_e (double x, gsl mode t mode, gsl sf result * result ) [Function] [Function] These routines compute the Airy function derivative Bi′ (x) with an accuracy specified by

International Economies Theory Essay

4241 words - 17 pages the same information a different way. In this figure we directly plot the marginal product of labor as a function of the labor employed. (In the appendix to this chapter, we show that the area under the marginal product curve represents the total output of cloth.) A similar pair of diagrams can represent the production function for food. These diagrams can then be combined to derive the production possibility frontier for the economy, as illustrated

Freedom And Responsibility

2141 words - 9 pages Built within the Constitution of the United States are specifically defined freedoms that are guaranteed to all citizens. Conversely, with every constitutional freedom there comes a corresponding responsibility. On September 25, 1789, the state legislature’s twelve proposed amendments were transmitted by congress, the first two dealing with congressional representation and congressional pay. The following numbers three through twelve were

Hate Crime Laws

2348 words - 10 pages On June 7, 1998, 49-year-old James Byrd Jr. of Texas accepted a ride from three white men, who then beat him severely, urinated on him, chained him by his ankles to the back of their pick-up truck, dragged him for three miles into the countryside, and dumped his corpse in front of an African-American cemetery (Graczyk). A little over a year later, a jury sentenced ring leader John King to death by lethal injection (“Man Executed for Dragging

Rational Emotional Behavior Therapy Case Study Conceptualization And Treatment Plan

2140 words - 9 pages Rational Emotional Behavior Therapy Case Study of Sarah: A Conceptualization and Treatment Plan Rational emotive behavior therapy, REBT, was developed by Albert Ellis and holds the central belief that the events in our lives do not cause our disturbances but that they are instead caused by our view of the events (Murdock, 2009). Murdock (2009) states that “people are seen as responsible for their behavior” (p. 279) but, because they are

Holidays In Albania

1636 words - 7 pages situated in the northern Albania, where tourists have discovered amazing mountains, landscapes with isolated charm-full valleys, and ancient traditions. The valley of Valbona is the first picturesque landscape you should visit. The snowy sword-like mountains that surround the valley perfectly indicate the Albanians’ bravery and patience. While walking along this valley, you will hear the strong gurgling sound of the water. The village situated

A Heart Of Darkness

1748 words - 7 pages emphasizing the two images of Kurtz: a barbarous and savage man of an uncivilized society vs. refined gentlemen from civilized Europe. The manager of the ivory company in Africa is essentially the scoundrel of the plot. He is the dark force indirectly responsible for the corruption and decadence in the Congo. Setting is also relevant to the overall theme of the novel. As the plot opens up, Marlow begins to compare the Thames River to the Congo. He

The Aspects Of Vulnerability Among The Exploited In Medical Research

2287 words - 10 pages Essentially, everyone is in some state of vulnerability. However, some of us are more susceptible to harm due to our vulnerabilities. The susceptible are the individuals with the greatest risk. These individuals risk the loss of their autonomy, and maybe even their lives. Vulnerable populations can be found in every subset of society. However, as previously mentioned, there are some vulnerable populations that are at an even greater risk than

The Hitchhiker’S Guide To The Galaxy

1171 words - 5 pages The Hitchhiker’s Guide to the Galaxy As the human race makes life-changing discoveries, it is made apparent that there is always more to learn as the universe, instead of becoming familiar, is becoming absurd. The Hitchhiker’s Guide to the Galaxy, written by Douglas Adams, as well as the 2005 film adaption, portrays absurdity to be an all-encompassing system in the universe. Through the introduction and attempt to understand lack of reason, the

The Ford Motor Company Wage Increase Of 1914 And The Theory Of Incentives And Efficiency Wages

1252 words - 6 pages ‘It’s not the employer who pays the wages. Employers only handle the money. It is the customer who pays the wages’ (Henry Ford, cited in Johnson and Weinstein 2004, p. 2). When the Ford Motor Company announced that it would more than double the wages of its workers in January 1914 to a ‘five-dollar day’ minimum, was this a contradiction to Henry Ford’s statement? If customers are actually the ultimate payers of wages, then more than

Historical Analysis Of The Economical Breakthroughs Of The Industrial Revolution

1396 words - 6 pages A Historical Analysis of the Economical Breakthroughs of the Industrial Revolution During the Industrial Revolution, many elements of society experienced huge breakthroughs that would change the way they functioned forever. Economics were definitely one of them. With many new inventions and many factories appearing, many, many, more resources were being created than ever before. Also, all of the revenue from these resources was being given to

Related Essays

Lab Report

942 words - 4 pages controller is the most effective controller that eliminates the offset of the proportional mode and still provides fast response. That is why PID controller has been chosen. It may be further stated that because of the action of Proportional parameter, the plot result will respond to a change very quickly. Due to the action of Integral parameter, the system is able to be returned to the set point value. The Derivative parameter will measure the change in the error and help to adjust the plot result accordingly.

Homework 1 Solutions Essay

919 words - 4 pages of liquid in the tank (V) and volumetric flow of water (Fo). The tank is well-mixed (i.e. C1 is uniform, throughout the tank). m The salt dissolves instantly at time t = 0 (i.e. Co = o ). V A molar balance (input – output = accumulation) on the salt in the first tank gives: ⎡ moles ⎤ ⎣ ⎦ FoCin Δt − FoC1Δt = V1C1 t+Δt − V1C1 t (1) Since Cin = 0, we can drop the first term and divide by Δt: − FoC1 = VC1 t+Δt − VC1 t

Fahrenheit 451 Essay

2080 words - 9 pages fireman, Guy Montag, attempts to understand what is present in books that at the mere sight of a book is incentive enough to burn it. The plot is simple, yet fiery. Fire is the panacea to everything in this story. Bradbury is attempting to send a message about censorship through his novel by showing that censorship is a natural outcome of a tolerant society.In Fahrenheit 451, Bradbury introduces readers to an assortment of characters and

Racism In Star Wars Essay

4074 words - 17 pages " (Ferguson, p.50).Before beginning to analyze the film, it is important to set the context by defining the concept of race and describing the movie plot. First, in defining what race is we look at it from a few different perspectives to construct a meaningful understanding. So what is race? Biologically race is "a population of interbreeding species that develops distinct characteristics differing from other populations of the same species