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Frac pack "Bypass Tool" System Design

IP.com Disclosure Number: IPCOM000247169D
Publication Date: 2016-Aug-11
Document File: 1 page(s) / 4K

Publishing Venue

The IP.com Prior Art Database

Abstract

One of the key challenges in frac pack jobs is to maintain positive weight on packer during the operations. When conducting frac pack, pumping through the work string will result in a high pressure profile in it. Consequently, a ballooning effect will cause the work string to shrink, which will reduce the weight on packer. The return flow will be through the work string. The new design will create reverse ballooning effect for the work string as the annular pressure is greater than tubing pressure during the frac pack. The reverse ballooning effect will elongate the work string, which helps maintain the weight on packer. The new frac pack system will also help reduce pumping pressure loss and allow use of heavier (smaller ID) drillpipe to obtain desired weight on packer during operation. A novel "Bypass Tool" design is proposed to replace the current "Crossover Tool" in frac pack system. This new frac pack system will use annulus instead of work string when pumping the slurry. The "Bypass Tool" will guide the annular slurry bypass the sand control packer to the annulus of the lower completion. The return flow will be through the work string. The new design will create reverse ballooning effect for the work string as the annular pressure is greater than tubing pressure during the frac pack. The reverse ballooning effect will elongate the work string, which helps maintain the weight on packer. There is a one-way valve in the "Bypass Tool" which allow the flow from work string to the annulus when picking up to reverse.

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Frac pack "Bypass Tool" System Design

One of the key challenges in frac pack jobs is to maintain positive weight on packer during the operations. When conducting frac pack, pumping through the work string will result in a high pressure profile in it. Consequently, a ballooning effect will cause the work string to shrink, which will reduce the weight on packer. The return flow will be through the work string. The new design will create reverse ballooning effect for the work string as the annular pressure is greater than tubing pressure during the frac pack. The reverse ballooning effect will elongate the work string, which helps maintain the weight on packer. The new frac pack system will also help reduce pumping pressure loss and allow use of heavier (smaller ID) drillpipe to obtain desired weight on packer during operation.  A novel "Bypass Tool" design is proposed to replace the current "Crossover Tool" in frac pack system. This new frac pack system will use annulus instead of work string when pumping the slurry. The "Bypass Tool" will guide the annular slurry bypass the sand control packer to the annulus of the lower completion. The return flow will be through the work string. The new design will create reverse ballooning effect for the work string as the annular pressure is greater than tubing pressure during the frac pack. The reverse ballooning effect will elongate the work string, which helps maintain the weight on packer. There is a one-way valve in the "Bypass Tool...