SZFP SINGLE ZONE FRAC PACK SYSTEM

Overview

Kelly SZFP is suitable for unconsolidated sandstone reservoir, can be capable of carrying out circulation pack, HRWP or frac pack by controlling return flow, form sand retention near the well bore and between casing and screen, finally prevent producing sand control for a long time.

Running

Following the perforation of the zones, the SZFP assembly is made up on the surface and run into well, placed across all the interval, and landed into the sump packer with CSA snap latch sealing assembly. The top packer is then set and tested and service tools released. The service tools are then positioned in the circulation or frac pack position by weight down tool where the gravel pack treatment is carried out. This can be performed with Circulation Pack, High Rate Water Pack(HRWP), or Fracturing Pack.

Gravel packing

The gravel packing can be performed in the squeeze or the circulating positions, while monitoring annulus pressure, and with or without taking fluid returns.

Excess Gravel

Any remaining gravel slurry inside of the tools and working string, will be reversed out and measured.

Production

The RHS packer is a retrievable packer. Once the production upper string is ran and sealed in the packer, the well is placed on production. If a work over is necessary during the life of the well, the packer can be retrieved in one trip with a special packer retrieving tool. Shear release of the RHS packer provides ease of packer retrieval and subsequent retrieval of the gravel-pack screens.

Feature

• Be appropriate for circulating packing and FracPac in sizes from 5-1/2” to 9-5/8”.

• Able to realize multi-zone Gravel Pack by Stacked Packing.

• Able to position service string by weight down tools to make sure no any movement during fracturing.

• Locking device in Gravel Packing Sleeve avoid the fault switch in the condition of service string movement.

• This technology has the abilities to frac and pack in large displacement, high sand ratio and large sand volume.

• Large amounts of application in site proved that this technology is mature and low risk.

Application

• Casing hole single zone gravel pack

• Gravel pack or frac pack treatments

Associated tools

• RHS Recoverable Hydraulic setting hanger packer

• GS Gravel Sleeve

• QC Quick Connection Joint

• RHS Sump Packer

• HST Hydraulic Setting tool

• SZFP Service Tool

• STSA Single Shifting tool

• STDA Shifting tool

• DW Weight Down tool

• CSA Snap Latch Sealing Assemble

Process Map