Composing a petroleum /reservoir engineering report

Composing a petroleum/reservoir engineering report

It’€™s a petroleum/reservoir engineering report paper, so I need help from someone who worked on this subject before. I choose it as a research paper, because the results I found will need to be supported with sources and only scholar sources in oil & gas industry are accepted (Ex. SPE papers). I’ve attached some reports that were given by the instructor as an example. Those reports represent the same UK field I’m working on, but SOME OF my results are different. To avoid Plagiarism, please use your own words with the right terminologies of the industry. You can look at V3-Example.doc to get an idea how the paragraphs should be like , and I highlighted the sections I need help with in the contents page:

  1. Geostatistics: Porosity-permeability Evaluation ( Basic statistics , Lorenz plots, Semi- Variograms, and Kv/kh ratio). Can use the attached (chapter 8 in “Res Con.Pdf”) and (Geo&Man2016.Pdf) as sources also.
  2. RFT Analysis. Search
  3. SCAL Analysis: (Capillary Pressure & J-Function, Relative Permeability, and Wettability Determination). Search
  4. STOIIP Calculations: (Deterministic Calculations, Probabilistic Calculations, and Sensitivity Analysis) you can see how (V3.doc) covered this Part Pages (74-80)

Geostatistics
Basic statistics

  • Discuss the importance of Geoengineering and Geostatistics in understanding and characterizing a reservoir. Then, explain each of the following results: (number of samples, sample sufficiency, sample tolerance, coefficient of variance and the averages (“Arithmetic, Geometric, Harmonic”). The averages at each well will characterize that region and show how one zone differ from another in the same reservoir.

Lorenz plots

  • For the 4 wells, examine both Lorenz plots and explain what they display, such as: (reservoir Heterogeneity, speed zones, reservoir system/structure, randomness, layering and cyclicity)

Discuss the effect of the speed/thief zones in Lorenz plots on the field performance and what is the appropriate development plane for it (Example, they cause early water breakthrough, therefore perforating those zones will be one of the solutions etc.

Semi- Variograms

  • Analyse the Semi- Variograms for each parameter of the 4 wells, fit them to the appropriate theoretical variograms ((you can use Geo & Man 2016.Pdf) page 83-84)) and summarize what they represent. Find the Nugget, Range and Sill for each plot. Are the data of each parameter (in each well) correlated or not? Explain how a variogram is used to explore spatial correlation in data, make judgement on relevant underlying geological features and make the modelling choices to follow in populating reservoir model properties. What can you assume about the stationarity & why? Below, I’ve attached a summary from a source followed by my results for the 4 wells.

Figure 1: How to Analyse Variograms

Porosity Cut-off

  • Write about how the (Horizontal Permeability Verse Porosity) Plots are used with the assumption of (1 mD permeability cut-off) to get the Porosity Cut-off that will be used to get the Net to Gross ( NTG) value for each well. Furthermore, write why this approach won’t be appropriate and we going to use GHE instead to get the Porosity Cut-off
  • Composing a petroleum

Sample Solution

 

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