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A BIT OF THEORY

This article addresses the issues that typically unfortunately not discussed in real practice. Initial methods of opening casing, cement and productive formation define all the further work of the well, inflow, period of operation, drop production rate, and the effectiveness of possible subsequent stimulation. 

INFREQUENTLY ASKED QUESTIONS

Why traditional methods of development oil and gas wells used only 50% recoverable reserves, and the rest amount are unrecoverable reserves ?

 

What is the most common cause of fall the well production rate ?

What are the traditional methods of re-completion today, and why the result is only a few extra barrels ? What makes cheap re-completion ?

What is the importance of detailed Geological and Geophysical analysis ?

 

Calculation of the residual reserves and financial profits. Determination of the main causes the falling production rate, and ascertainment of the most effective method of treatments for increase the flow.

What information is needed for Geological and Geophysical analysis, and what the results after analysis ?

Physical factors that cause debit to fall, and what impossible to correct ?

Technical factors that cause debit to fall, and what impossible to correct ?

What are the initial traditional methods of opening casing, cement and productive formation ?

 

What are the main requirements of Geological Mechanics, and what methods this match ?

Comparison of the initial traditional methods of opening casing, cement and productive formation.

 

Gun/cumulative perforation. Abrasive jet-point perforation. Hydro-slotting perforation. Hydraulic fracturing.

Why well does not flow ? Circular stress conditions.

Unloading stress conditions in the near wellbore zone. Increasing of permeability and improving of reservoir properties.

Known methods of additional stimulation and its effectiveness after traditional methods of opening casing, cement and productive formation.