两项新发表的研究探讨了马蹄形井和强化排水开发 (ADD) 井设计是否应该在非常规石油和天然气行业的未来发挥更大作用的问题。

在本月的 SPE 水力压裂技术会议上，SPE 217792声称提供了 ADD 概念的第一个面向公众的数值模拟结果，该概念通过将割缝衬管井眼直接放置在水平井中，利用从水平井延伸出来的长裂缝。小路。

其主要发现表明，这些被动生产井可能并不适合所有致密岩层，而且在它们确实适用的地方，产量可能仅相当于最终从主动水力压裂井中流出的石油的 5%。然而，本文中未包含的进一步模拟工作正在进行中，并表明替代的 ADD 井位位置可能会改善看似很小的误差范围和盈利能力。

A pair of freshly published studies explore the question of whether horseshoe and augmented drainage development (ADD) well designs deserve a bigger role in the future of the unconventional oil and gas industry.

Presented at this month’s SPE Hydraulic Fracturing Technology Conference, SPE 217792 claims to offer the first public-facing numerical simulation results of the ADD concept which leverages the long fractures that propagate out of horizontal wells by placing a slotted-liner wellbore directly in their path.

Its chief findings indicate that these passive producers may not be ideal in all tight rock plays, and where they do apply may only yield the equivalent of 5% of the oil that will ultimately flow from the active hydraulically fractured well. However, further simulation work not included in the paper is ongoing and suggests alternative ADD well placement locations may improve what appears to be a thin margin of error and profitability.