一种适用于页岩油多层合采的管柱结构设计

The Structure in New Type of Column Being Suitable for Multi-layered Shale Oil Exploitation

页岩油是非常规油气中最具开发价值的油藏之一。页岩油(气)藏属于生储同层油气藏,其特征在于油藏较深,渗透率低,在一定程度上可再生。这些特征使得在开采多层页岩油的过程中出现井下空间狭小无法构造油流通道及无法合理利用页岩油的可再生性造成产油浪费等问题。本文设计的双套管结构是一种运用分时采油最终实现同井筒合采工艺的采油结构。适用于页岩油的多层合采,同时也符合常规油的多层开采需求。同时从井下压力变化、稳定性以及许用压力来分析设计井下的生产管柱结构。

Oil shale oil and gas is one of the most development value ofthe unconventional reservoir. Shale oil reservoir is located, is characterized inthat the reservoir is deep, low permeability, renewable in a certain extent.Because of these characteristics of shale oil, shale oil mining process in themultilayer, there will be underground space is small, the problem not beconstructed oil flow channel and not reasonable utilization of renewable wastecaused by oil shale oil. In this paper, the design of the double sleevestructure is a kind of oil production structure which can be used in theproduction of a well. It is suitable for multi-layer mining of shale oil, and italso meets the requirements of multi-layer mining of conventional oil. At thesame time, the inner structure of the production column is analyzed anddesigned according to the change of downhole pressure, the stability and theallowable pressure.