Directional Gas Well Completion Method Is Preferred

Optimization of directional gas well competition methods of all angles is a research belongs to new frontiers in and abroad, which studied by precedents oddly and unsystematically. They are almost directed against vertical gas well and heretical gas well but directional ones. Long and systematic studies have been made to optimization of oil welt competition method selection in and board, but it is absolutely antiscientific and unacceptable to make a use of ways and systems established by them .difference lies between deliverability analysis of gas well and oil well in judgment of hole stability, sand prediction and deliverability equation. Therefore, huge importance must be put on probing and studying optimization of directional gas well competition select, which is also the cause of preceding this research.The paper, directed against directional gas well competition method, carried out systematic analysis and deep research in strength and weakness and geologic condition of each competition method, factors influencing method selection, including hole stability in production, sand inflow or not, characters of geologic and gas engineering, bore hole operation, gas engineering requirement and so on. The paper combines directional well competition and propounds a series detailed cue aiming at directional gas well in perspective of competition engineering: first, competition methods selection should be in accordance with gas reservoir style, gas layer characters and take technology requirement into consideration, and take this select as the primary one ;second, the paper deduce deliverability equation of all kinds of competitions styles and predict the productivity competition with primary method; third, it carry out single-well performance according to productivity prediction; at last, according to single-well performance, it estimate competition methods with economic benefit. In such way, the paper makes sure the competition method can meet engineering requirement in any dimension. Consideration of each judge method and evidence in condition of sand inflow with weighted method guarantee the judgment results exactly and reliably.Under such deduce, the paper have gained deliverability equations to directional gas well in all kinds of competition styles, finished analysis of factors influencing productivity and programmed directional gas well competition method optimization soft with VB as to propound a convenient, programmable ,systematic, simple and fast optimized theory and tool. Through applications in sample well, the soft has been confirmed right in calculation methods and competition style select, at same time, insured the theory system founded by my paper.