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水平井开发油气田,提高采收率的一项重要技术,特别是对低渗透、薄油层、稠油、残余油等难开发油藏。本文从油井特性、油藏类型和地层损害程度三大方面对水平井产能的影响因素进行了研究,表明在通常情况下,地层损害程度是影响水平井产量的主要因素,但各向异性比的影响也不能忽略。本文还对水平井经济评价方法进行研究。
Horizontal well development of oil and gas fields, an important technology to enhance oil recovery, especially for low permeability, thin reservoirs, heavy oil, residual oil hard to develop reservoirs. In this paper, the influencing factors of horizontal well productivity are studied from three aspects of well characteristics, reservoir types and formation damage degree. It shows that under normal circumstances, the degree of formation damage is the main factor affecting horizontal well production, but the anisotropy ratio Impact can not be ignored. This paper also studies the economic evaluation of horizontal wells.