US 10,711,176 B2 · Method, process, apparatus and chemicals to produce and inject paraffin treating compounds

Abstract

The present invention is a device and a method that combines a carbon disulfide-releasing chemical with a low pH organic or inorganic acid to produce a carbon disulfide-containing fluid at or near the point of injection that minimizes or eliminates the possible exposure of carbon disulfide to workers and the environment. In one particular embodiment a positive displacement injection pump injects the carbon disulfide-containing fluid into a crude oil system for treating crude oil transmission lines and in downhole tubulars to remove paraffin deposits. The device uses a unique in-line motion mixer to mix two fluids. The device is electronically controlled locally and remotely with the system operating data displayed locally and transmitted remotely. The paraffin treating carbon disulfide-containing fluid and supplemental chemicals dissolve, disperse and remove paraffin deposits.

Claims17

Dependent claims

A system for in-line mixing and injection of paraffin treatment solutions comprising:

a first feed tank containing a precursor salt and selectively in communication with a first conduit;
a first positive displacement pump in line with the first conduit;
a second feed tank containing an acid and selectively in communication with a second conduit;
a second positive displacement pump in line with the second conduit;
an in-line motion mixer selectively in communication with the first conduit and second conduit, wherein the in-line motion mixer combines the precursor salt and the acid to form a carbon disulfide solution and release it into an exit conduit;
and
an injection manifold which receives the carbon disulfide solution from the exit conduit and releases it into a flowline.

4 more elements

Dependencies are inferred from the claim text.

Method, process, apparatus and chemicals to produce and inject paraffin treating compounds

Life of this patent

Method, process, apparatus and chemicals to produce and inject paraffin treating compounds

Life of this patent

Abstract

Claims17