New sonic logging method discovered by Memorial Engineering team - better method to predict offshore oil field's formation and properties!  Dynamic data driven sonic well log model for formation evaluation. 
Visit: https://www.sciencedirect.com/science/article/abs/pii/S092041051930049X


Highlights

•
A novel data driven nonlinear autoregressive neural network model to estimate the shear and compressional sonic travel time.
•
The proposed model is developed using 11 wells, six from the Norwegian continental shelf and five from West Africa.
•
The results confirm predictability of the actual sonic well logs using proposed model.
•
The predicted sonic logs are used to estimate formation properties like sonic porosity and Poisson's ratio.
•
The proposed model is an easy, efficient and accurate means to reproduce sonic well logs for formation evaluation.

Abstract

The lack of acoustic measurements places severe limitations on the application of well log data to analyze rock physics. In such conditions, other petrophysical data can be used to predict the shear and compressional sonic travel time. This study presents a novel data-driven model based on a nonlinear autoregressive neural network with exogenous (NARX) input to estimate the shear and compressional sonic travel time due to its ability to accurately determine nonlinearity in sequential and temporal data. The architecture of the model comprises three-layers and ten hidden neurons with gamma ray log as exogenous input. The proposed NARX methodology is developed using 11 wells, six from the Norwegian continental shelf and five from West Africa. The results show that the wells provide sufficiently accurate predictions of the actual sonic well logs using the NARX model. The predicted sonic logs are used to estimate formation property parameters like sonic ratio, sonic difference, sonic porosity, and Poisson's ratio. This paper proves NARX is an affordable, efficient and accurate means to reproduce sonic well logs for formation evaluation.
Get the complete document in the link above. 

Comments

Post a Comment

Popular posts from this blog

2 POINTS YOU NEED.

Don’t let worry control you. That’s what Satan wants. He wants you to worry and live in doubt. Don’t let stress consume you too. Take things in your  stride. Think positive. Always look for solutions. Take a deep breath and know that the Almighty has it all worked out for you. When you don’t understand what’s happening in your life, Just close your eyes, and take a deep breath and say, Dear God,  I know this is your plan just help me through it.” Take every day as a chance to become a better Christian. Don't worry be happy. God is there for you.
Read more

ISS GLOVEBOX

Image
Training in the ISS glovebox, for biological experiments that need to be contained, gives me an appreciation for the scientists that do this every day. Science leads to discoveries, to new technologies, to a better life, to further exploration: it lets us go Beyond. The Microgravity Science Glovebox (MSG) is a sealed facility that provides an enclosed space for investigations conducted in a low-gravity, or microgravity, environment created on the International Space Station (ISS). The Glovebox accommodates small and medium-sized investigations from disciplines including biotechnology, combustion science, fluid physics, fundamental physics, and materials science. The MSG can provide the experiment with power, data acquisition, computer communications, vacuum, nitrogen, and specialized tools. It is designed to more closely simulate working laboratory conditions on the ground. The Glovebox provides a safe environment for Space Station crew to conduct research with liquids, fl...
Read more

Boeing 737 carrying 170 crashes in Iran shortly after takeoff with no survivors

Image
A Ukraine Airlines passenger plane carrying at least 170 people crashed in Iran  shortly after takeoff Wednesday morning, killing all on board, according to Iranian officials. "An investigation team from the national aviation department was dispatched to the location after the news was announced," spokesman Reza Jafarzadeh of the Iranian Aviation Organization said in a statement. The crash occurred hours after Iran fired multiple missiles into Iraq, targeting U.S. military sites in what appeared to be retaliation for the recent American drone strike that killed one of its top generals. jd MB he site of the crash of a Ukraine Airlines passenger jet near the Iranian capital of Tehran is seen in this still image...  more The site of the crash of a Ukraine Airlines passenger jet near the Iranian capital of Tehran is seen in this still image from an Associated Press video, Jan. 8, 2020. The site of the crash of the Ukraine 🇺🇦 Airlines passenger jet near the Ira...
Read more