Chemical delivery apparatus, system, and method for hydrocarbon production

摘要

A chemical distribution device includes mixing manifold that receives well treatment chemicals and solvent that are to be mixed. A siphon is positioned within the mixing manifold to control the fluid level. The mixture is not delivered from the chemical distribution device until the fluid level of the mixture is above a crest of the siphon. The mixture is delivered in a batch to the well via a flowline until the fluid level of the mixture is below the inlet of the siphon.

主权项

1. An apparatus for delivering chemicals to a hydrocarbon well producing a produced fluid from a reservoir, the apparatus comprising:
a chemical source configured to provide a well treatment chemical; a manifold configured to receive the produced fluid from the well and the chemical from the chemical source and communicate a mixture of the produced fluid and the chemical to a production annulus of the well; a chemical line inside the manifold and configured to deliver the mixture to the production annulus of the well, wherein the chemical line comprises an inlet inside the manifold for receiving the mixture, an upfill portion inside the manifold extending upward from the inlet to a crest portion inside the manifold, and a downfill portion inside the manifold extending downward in the manifold from the crest portion, such that the upfill, crest, and downfill portions in combination form a continuous tubular siphon inside the manifold; and a vent line with an opening in the production annulus of the well and an opening above the crest portion of the chemical line inside the manifold, the vent line connecting the production annulus of the well and the manifold and configured to equalize pressures therebetween such that the mixture is delivered to the production annulus of the well when a level of the mixture in the manifold rises to the crest portion and delivery of the mixture ceases when the level of the mixture falls below the inlet.