During rock drilling operation If the Drill bit diameter, Penetration rate, and Spindle speed increases what about Thrust?

More Vijaya Kumar Chodavarapu's questions See All

Which is the most efficient etching solution for nickel based alloys?

Which solution reveals the microstructure and features of nickel-based alloys?

02 March 2021 2,221 3 View

Which is the most convenient manufacturing software for Additive Manufacturing?

Which tools can be used to generate machine codes for additive manufacturing?

02 March 2021 7,220 2 View

Which is the best place in the world for the plant biotechnology research?

I am searching for a good place for the Post Doc,

02 March 2021 4,053 3 View

Which SAR dataset to use for generating coherency matrix and performing target decomposition (Description) ?

Working on chandrayaan-2 DFSAR data, there are three datasets available: 1) Slant range image data product: The slant range complex image file. Each pixel is represented by two 4-byte floating...

02 March 2021 8,481 3 View

How does one access the Cranet survey data on HRM practices?

Hello, The Cranet website does not provide any lead to the data obtained from their multinational survey on HRM practices. Any help on accessing the data would be most appreciated. Thank...

01 March 2021 9,536 3 View

Genome-wide gene identification protocol ?

Is there any book chapter/book, webpage or research article available to understand genome-wide gene identification?

28 February 2021 8,095 1 View

Can the problems of overfitting be solved without cross validation?

For an overfit data set the cross validation error will be much bigger than the training error. Is it true or false?

23 February 2021 3,616 2 View

Research Gate Does it help researches to publicize their scientific work ?

In my opinion, the RG site is useful in solving scientific problems and shows the researcher's ability. Besides, the separation of the H-index from the self-citations and the overall index is an...

22 February 2021 3,894 6 View

How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

How to classify and recognize unseen image class in document sorting?

To sort the scanned document image I have to determine the class of document. But no of classes of image will keep on adding even after training. So at time of inference first I will detect unseen...

16 February 2021 4,501 3 View

I need to accelerate corrosion in steel parts that are used in a salt-water environment. Is there a technique for doing so?

I have a structure that employs d-ring swiveling tie-downs that corrode during use and become "frozen". I have sample swivel assemblies that I wish to corrode to see if I can free them using one...

01 March 2021 3,739 3 View

Having 2 different substrates under the same deposit conditions (TiN coating) why it is possible to obtain different colours in the 2 dif substrates?

Coating is made by same deposit conditions. substrates are HSS Drill bit and Shim SS 300 series. On the drill bit we are getting some golden color, however on the shim we got no color it is like...

08 February 2021 9,383 7 View

For Petroleum Engineers in Ontario, would a P.Eng designation be recommended?

For anyone attempting to find a job as a petroleum engineer (whether it be a reservoir engineer, drilling engineer, etc.) in Ontario, Canada... is it recommended that they acquire a P.Eng...

14 December 2020 5,402 3 View

How Can conduct measurement on powder using Raman Microscopy?

I am trying to measure the Raman microscopy spectrum of a drug in its powder form and I am not sure what is the best way to spread the powder over the microscope slide so that no interference will...

13 December 2020 7,884 6 View

I need Coronary Angiogram Images for Coronary Artery Disease detection?

I need Coronary Angiogram Images(CAI) publically available dataset. Coronary Artery Disease (CAD) is a condition of the heart due to atherosclerosis. Atherosclerosis is the narrowing of arteries...

07 December 2020 6,470 3 View

What quantitative method should I use to assess or predict the economic impact of a specific technology on an operational activity like drilling?

I am trying to assess or predict the use of one specific technology that might have several impacts on an operational activity - drilling in the oil industry. This technology is supposed to...

23 November 2020 3,860 4 View

Why abnormal thrust force was generated in simulation of CFRP drilling?

I am doing some simulations of drilling carbon fiber reinforced plastics (CFRP) with Abaqus/Explicit. 3D Hashin's damage model with damage evolution has been defined for the CFRP composite. The...

20 November 2020 6,715 1 View

What could be the best genetic markers for cuticle resistance in Mosquitoes ?

Insect cuticle plays control roles in reducing insecticide penetration into the insect's internal body. This cuticle possesses cuticular biomolecules such as proteins and hydrocarbons which maybe...

11 November 2020 6,333 1 View

I am looking for advice. How to prepare bacterial cells for AFM images (live and fixed on glass slide)?

We have a new AFM with a capability to achive high resolution images (up to 50nm). The AFM tips can scan the surface of the object and as well, can penetrate into the object. We also have the...

07 November 2020 2,813 7 View

What is the relationship between the type of material(ex: steel, iron etc.), thrust and torque?

If I am drilling through bars of different material(ex: iron, steel etc.) of the same thickness and under the same conditions of drill operations(feed rate and rpm), how will the torque and thrust...

06 November 2020 4,498 3 View

Sergei G. Parsegov

if you're asking about WOB (lb), see MSE definition here on slide 6.

https://www.spegcs.org/media/files/files/c476bb48/GCS_SPE-178842_DSG_Presentation_11-9-16.pdf

For efficient drilling, MSE_consumed is constant for a given formation while other parameters varying to keep MSE constant. If the bit is in disfunction, the answer depends on the type which can be identified by step tests for ROP in WOB-RPM coordinates https://www.oedigital.com/news/446376-managing-stick-slip

Vijaya Kumar Chodavarapu

Respected Sir,

Thank you very much.