Methods and equipment to improve reliability of pinpoint stimulation operations

摘要

Apparatuses and methods for improving the reliability of pinpoint stimulation operations is disclosed. A pinpoint stimulation improvement apparatus is disclosed which includes a hold down device, at least one flow reducer coupled to the hold down device, and a jetting tool coupled to the flow reducer. The flow reducer is positioned downstream from the jetting tool. A fluid flowing through the jetting tool passes through the flow reducer and forms a sand plug downstream from the pinpoint stimulation improvement apparatus.

主权项

1. A method of creating a sand plug at a fracture in a wellbore having a fracture opening comprising the steps of:
flowing a sand slurry to the fracture opening at a low flow rate; creating a sand dune at the fracture opening; flowing the sand slurry into an upper portion of the fracture; allowing sand particles of the sand slurry to drop down into the wellbore from the upper portion of the fracture; depositing the sand particles on the sand dune; and substantially plugging the fracture opening.