The Analysis And Research Of Horizontal Wells Production In Sulige14Reservoir

Based on the horizontal well production mechanism, the Sulige gas field as researchobject, the analysis of horizontal well production, Sulige gas field has become the main placeof natural gas in our country construction of large-scale production, is currently China’slargest uncompartmentalized gas fields onshore, proven reserves of6025hundred millioncubic meters, equivalent to a6million tons of large oil fields, because of large reserves, highgrade, so the Sulige gas field has become an important source of national "west east gastransmission" project. Firstly, on the productivity of horizontal wells or productivityprediction aspects of domestic and international literatures were reviewed; then Sulige fieldregional geological, reservoir characteristics, as well as the Su14block of the study ofreservoir characteristics are analyzed; on this basis, the Sulige gas reservoir permeabilitycharacteristics were analyzed, and to explore the the main methods of horizontal wellproduction or productivity prediction; finally using the Eclipse software to establish themodel, the factors that may affect the productivity of horizontal wells were simulated andanalyzed, mainly including the reservoir permeability, permeability anisotropy, the reservoirthickness, the length of horizontal well, the starting pressure gradient, the reservoir damagefactors results indicate that, these factors, is a direct impact on production of horizontal well,but the influence of various sizes, the impact is the biggest is reservoir permeability andreservoir thickness prediction formula, in Sulige gas field binomial productivity, through theexperiment verified the availability formula.This study, has certain theoretical significance for the research results to further improvethe domestic and foreign scholars in horizontal gas well production or production field; at thesame time can be beneficial, considering many factors of horizontal well technologyparameters of redesign, has important practical significance for further play to bring thehorizontal well technology economic benefit.