Keep Petrophysics Simple.

Dosh Nazlan

22 July, 2018

The Super Petrophysics Framework Our aim? Keep Petrophysics simple so non Petrophysicists can do more Petrophysics quickly and easily. Why? We believe in simplicity. Simplicity is powerful. We want to make life simpler for our users. How? 1. Keep it simple. 2. Focus on big ideas. 3....

Average reservoir parameters for common shale gas reservoirs

Dosh Nazlan

14 March, 2018

Here are the average reservoir parameters for Barnett Shale and Eagle Ford Shale. This post will give you ideas about the quality of each shale gas reservoir. Some body will scream, "Oh, each shale reservoir is different!". Of course they are. Use at your own risk. Average Reservoir...

Petrophysics Core Skills

Dosh Nazlan

11 March, 2018

The basic building block for petrophysics. 1. Logging a. Tool physics + Environmental corrections i. Basic Logs ii. Advanced Logs iii. Non Logs b. Logging Operations 2. Well Log Interpretation a. Open Hole Log Interpretation b. Cased Hole Log Interpretation c. Integrated Formation...

RCA vs SCAL

Dosh Nazlan

31 July, 2017

From RCA you get grain density, porosity and permeability. From SCAL you get the electrical parameters (m,n), capillary curves and relative permeability.

Generate missing sonic log using resistivity logs with this transform

Dosh Nazlan

21 July, 2017

In many older fields, you only have resistivity logs to work with. What if you need a sonic log to generate seismic seismogram? A quick solution is to generate your own pseudo sonic log. (image source: borrachas.tumblr.com) In 1951, Faust came up with a transform to estimate compressional...

The 'X-Ray' trick to estimate density-neutron porosity

Dosh Nazlan

20 July, 2017

Do you know that you can visually estimate porosity just by looking at your density and neutron logs? The trick is very simple, but not a lot of people know about it. It’s particularly useful in a relatively clean carbonate or sandstone and liquid (oil or gas) bearing zone. So, here is the...

Patterns and trends: A sure and a quick way to evaluate a reservoir.

Dosh Nazlan

11 July, 2017

Petrophysicists like patterns and trends. It’s a sure and a quick way to evaluate a reservoir. They make it easier for us to establish, correlate and predict the outcomes. Like in a quick log analysis, if we know that the density-neutron are overlaying, it means that we are in an oil or water...

Is wireline depth always deeper than the LWD depth?

Dosh Nazlan

10 July, 2017

Is wireline depth always deeper than the LWD depth? In most cases, the wireline depth is deeper than the LWD Depth. The cable stretches more than the pipe stretch of LWD string. But the good thing is, the cable stretch can be corrected, while the LWD stretch cannot be corrected. The first...

The Three Things You Need To Be Good At When Interpreting Logs

Dosh Nazlan

10 July, 2017

There are three things you need to be good at log interpretation: Identify, Interpret and Integrate. 1. Identify Have an interest in what, why and how of the things you do. For instance, if you want to interpret a log, you need to know why you spend money to get the logs, how to tell good...

Rock Typing In Complex Carbonates. Which One Do You Choose?

Dosh Nazlan

10 July, 2017

Diagenesis makes complex carbonate complex. Classifying the rock types in any complex carbonate reservoirs is very hard. Rock typing is a clustering of rocks that have the similar geological and petrophysical properties at core and log scale. It's like trying to group your rock favorite rock...

The Super Petrophysics Blog

Simple shortcuts to day-to-day petrophysics.

Keep Petrophysics Simple.

Average reservoir parameters for common shale gas reservoirs

Petrophysics Core Skills

RCA vs SCAL

Generate missing sonic log using resistivity logs with this transform

The 'X-Ray' trick to estimate density-neutron porosity

Patterns and trends: A sure and a quick way to evaluate a reservoir.

Is wireline depth always deeper than the LWD depth?

The Three Things You Need To Be Good At When Interpreting Logs

Rock Typing In Complex Carbonates. Which One Do You Choose?

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