Compared to vertical or lowinclination wells, horizontal wells can deliver higher production rates, higher recovery factors, and more efficient use of steam in thermally enhanced recovery projects for heavy oil. However, the shallow, thin, and friable sand reservoirs in Columbia’s Girasol field present several challenges to the accurate placement of horizontal wells. Schlumberger was contracted...

Abstract Electron-positron pair production in asymmetric Sauter potential well is studied, where the has been built as width of right edge fixed but left side changeable at different values. We study momentum spectrum, location distribution and total numbers this case compare them with symmetric case. The relationship between created electron energy, level energy bound states photon used to stu...

This research discusses the optimization of production carried out in Well A and B. The two Wells are with three layers (multilayer) that have different characteristics for each layer. Based on performance evaluation Wells, it’s known B no longer able to produce naturally (natural flow). Therefore, necessary an artificial lift order be produce.The method used is install electric submersible pum...

asphaltene precipitation and deposition is a serious problem in many iranian fields. the deposited asphaltene results in partial or total blockage of the wellbore and wellstring reducing or completely seizing oil production. this paper studies the asphaltene problem and mitigation methods in wellstring systematically. it presents new approach based on the combination of thermodynamic modeling o...