METHOD FOR PROVIDING STEP CHANGES IN PROPPANT DELIVERY

摘要

A method of creating a step-change in proppant concentration in a fracturing fluid at a desired location within the conduit or wellbore of an oil or gas well includes the steps of connecting an in-line mixer at an end of a conveyance, placing the in-line mixer within a conduit proximate to the desired location, providing a flow of a clean fluid from an upper portion of the conduit past the in-line mixer and into a lower portion of the conduit, introducing a proppant slurry into the conveyance, and injecting the proppant slurry into the clean fluid from the in-line mixer to generate a first step-change from the clean fluid to a flow of a mixture of the proppant slurry and the clean fluid within the desired location.

主权项

1. A method of providing a step-change in proppant concentration, the method comprising:
connecting an in-line mixer at an end of a conveyance; placing the in-line mixer within a conduit; providing a flow of a clean fluid from an upper portion of the conduit past the in-line mixer and into a lower portion of the conduit; introducing a proppant slurry into the conveyance; and injecting the proppant slurry into the clean fluid from the in-line mixer to generate a mixture of the proppant slurry and the clean fluid, wherein the mixture exhibits a first step-change from the clean fluid to a flow of the mixture in the lower portion of the conduit.