Abstract Understanding the formation damage surrounding well during drilling operation is key to predict degree and protect in oil/gas reserviors. Based on core drainage results, we obtained an empirical relationship between invasion volume of fluid permeability reduction formation. Furthermore, equation incorporated into a commercial reservior numerical simulation simulator characterize behavi...

MECHANISMS ..............................................................................................................2 INTRA-MOLECULAR DIPOLE-DIPOLE INTERACTIONS.....................................................4 INTER-MOLECULAR DIPOLE-DIPOLE INTERACTIONS .....................................................5 SPIN-ROTATION INTERACTIONS........................................................

Problems such as well loss and collapses in deep shale gas drilling are most often due to the development of cracks formation, resulting significant leaks fluid, sticking burrowing tools, other engineering accidents. In addition, horizontal sections wells very long issues friction, rock transport, formation contamination loom large. As a result, performance fluids directly affects efficiency, a...

The article provides information on the causes of drilling fluid absorption and research conducted during its absorption. It is known that some complications arise when a well. One them loss circulation. Absorption mainly depends several factors. main factors depend condition well, geological structure correctness processes performed drilling. Also, another factor has an effect, which type flui...

Esters were found to be promising alternatives oil, as a constituent of drilling fluids, due their biodegradability and bioaccumulation attributes. In this study, we used ethyl octanoate ester (EO) low molecular weight synthetic oil for formulating an ester-based fluid (EBDF). Aluminum oxide nanorods (nanoparticles) introduced Pickering emulsion stabilizer. Like the commercial emulsifiers, they...

The problem of slow drilling in deep shale formations occurs worldwide causing significant expenses to the oil industry. Bit balling which is widely considered as the main cause of poor bit performance in shales, especially deep shales, is being drilled with water-based mud. Therefore, efforts have been made to develop a model to diagnose drilling effectivity. Hence, we arrived at graphical cor...

a r t i c l e i n f o The use of high-volume horizontal hydraulic fracturing (fracking) has increased substantially over the past five years in the United States. Use of this drilling technology to extract natural gas from hitherto impermeable shale is expected to increase even more in coming decades. Two institutions, integration contracts and well spacing requirements, evolved to mitigate the...

Abstract This review presents the latest update, applications, techniques of NMR tools in both laboratory and field scales oil gas upstream industry. The applications scale were thoroughly reviewed summarized such as porosity, pores size distribution, permeability, saturations, capillary pressure, wettability. is an emerging tool to evaluate improved recovery techniques, it was found be better ...