Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

Abstract

Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte i primenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko je prikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se video značaj ovog naftnog polja. Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate proces proizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gaslift sistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodni problemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali su smanjenje proizvodnje nafte od 40 do 75%. Zbog toga je bilo neohodno da se preduzmu dodatne mere i aktivnosti na rešavanju proizvodnih problema kao se oni dodatno nebi pogoršali i uzrokovali još veće smanjenje proizvodnje nafte. Na osnovu karakteristika naftnog polja Amala, detaljne analize proizvodnih problema, najnovijih literaturnih saznanja definisan je novi model za postizanje optimalne proizvodnje nafte. Model se sastoji iz dva ključna dela, prvog koji se bavi rešavanjem proizvodnih problema i drugog za određivanje optimalnih parametara rada gaslifta. Originalnost modela leži i u činjenici da se u model egzaktno uvode ekološki aspekti funkcionisanja procesa proizvodnje nafte i algoritamski se predlažu mere za smanjenje uticaja na životnu sredinu. Za efikasnije rešavanje problema taloženja parafina definisan je skup novih aktivnosti koje se moraju preduzeti. Urađena je analiza primene hemijskih inhibitora i predložena primena termičke metode zagrevanja tubinga. Za rešavanje prodora slojnog pesak u proizvodni sistem predložena je primena metode gravel paka. U cilju efikasnije proizvodnje nafte definisan je model za adekvatnu raspodelu gasa koji se utiskuje u bušotine, na nivou sabirnih stanica, odnosno kompresorskih stanica. Radi optimizacije proizvodnje nafte primenjena je sistem analiza rada bušotina u gasliftu koja je omogućila efikasniju proizvodnju nafte sa jedne strane i povećanje proizvodnje nafte sa druge strane...

In this doctoral dissertation, it has analyzed the problems of oil production and application of methods for their solutions at the Amal oilfield. It has also provided a brief presentation of oil production in Libya, its characteristics and reserves in order to show the importance of this oilfield. It has been found that major problems accompanying the production process at the Amal oilfield are paraffin deposition, occurrence of layer sand, inefficient operations of Gas Lift System, inefficient oil desalination and environmental issues. Production problems, taken individually or several of them together, at some oil wells, caused a decrease in production of 40% up to 75%. It was necessary to take additional measures and actions in order to solve the production problems so that they could not become worse and cause further decrease in oil production. Based on the characteristics of the Amal oilfield, detailed analysis of the accompanying problems and the latest technical literature, a new model has been defined for achieving the optimum oil production. The model consists of two major parts; the first one dealing with the solution of the production problems, and the second one dealing with the determination of optimum parameters for Gas Lift Operations. The originality of the model reflects in the fact that environmental aspects of the functioning of the oil production process have been exactly introduced into it and measures based on algorithms for the decrease of impact on the environment have been proposed. Regarding more efficient solution of the paraffin deposition problems, it has defined a set of new actions that must be taken. The analysis of the application of chemical inhibitors has been performed, and the application of thermal method of tubing heating has been proposed. As a solution for the penetration of layer sand into the production system, it has proposed the use of gravel pack method...