
Deployment of a Non-Cemented Liner with Ball-Actuated Multistage Fracturing System

Deployment of a Non-Cemented Liner with Ball-Actuated Multistage Fracturing System
Company required a solution for deploying and installing a liner in a horizontal well at the Zapadnaya Prorva field, as part of a project aimed at increasing production through the implementation of a multistage hydraulic fracturing (MSHF) system. The objective was to run a 114 mm liner with ball-activated frac sleeves to a total depth of 3,550 m and set a liner hanger in a 178 mm production casing
Our company supplied the SAPSAN non-cemented liner hanger system, engineered for high-pressure applications up to 69 MPa
The SAPSAN liner hanger was deployed on drill pipe and set inside the 178 mm production casing at a depth of 2,350 m in a single trip, without requiring additional equipment
The liner shoe reached the designed depth of 3,550 m as planned
The hanger was hydraulically set using surface equipment, creating a secure pressure barrier rated to 69 MPa and 149 °C
Subsequent multistage fracturing operations were executed as planned, with sleeve opening pressures and ball dissolution times matching design specifications
Deployment of a Non-cemented Liner in a high-temperature geothermal well

Deployment of a Non-cemented Liner in a high-temperature geothermal well
Company required the installation of a liner in a pilot geothermal well at the Podravska Slatina field, where the reservoir temperature reaches 300°C. The goal was to deploy a 178mm slotted liner tothe planned depth of 4,580m and set a liner hanger in a 245mm productioncasing.
Our company provided the Sapsan non-cemented liner hanger system, equipped with high-temperature-resistant sealing components and a thermal-rated packer element designed for extreme temperatures up to 315°C.
The Sapsan liner hanger was deployed into the well on drill pipe and set insidethe 245mm production casing at a depth of 4,100m in a single trip
The 178 mm liner shoe reached the target depth of 4,580 m, in accordance with the well plan. Duringthe running of the liner, a heavy mud with a high solids content was used, which complicated the operation
The hanger was hydraulically set using surface equipment. As a result, a reliable pressure barrier was established, rated for 21 MPa and 315°C
Subsequent operations by the client proceeded according to schedule
Deployment of a Cemented Liner in a Production Well
Required the deployment, installation, and cementing of a liner in a deviated production well in the Chepakovskoe field, with a formation temperature of 146 °C. The goal was to run a 114 mm liner to the planned depth of 3,000 m and set a liner hanger with packer in the 178 mm production casing, while maintaining formation integrity and minimizing non-productive time.
Our company supplied the Osprey cemented liner hanger system, equipped with hydrogenated nitrile (HNBR) sealing and packing elements rated for temperatures up to 149 °C
The Osprey liner hanger was run into the well on a drill pipe string and set inside the 245 mm production casing at the planned depth of 2,500 m in a single trip
The anchor section of the Osprey liner hanger was hydraulically set using surface pumping equipment. Following verification of anchoring, the liner was cemented while being rotated continuously to prevent channeling and enhance cement bond quality
The running tool was then released hydraulically; the mechanical backup release was not required. The packer section of the Osprey hanger was mechanically set using applied axial load. This created a secure pressure barrier rated for 69 MPa and 149 °C, ensuring safe future production from the well
Subsequent operations by the client were executed according to plan
Wellhead Replacement Using RIBP Retrievable Inflatable Bridge Plug in Achimgas Urengoi Oilfield

Wellhead Replacement Using RIBP Retrievable Inflatable Bridge Plug in Achimgas Urengoi Oilfield
Company needed to replace a malfunctioning wellhead on a producing well in the Urengoi field, which had a bottomhole pressure of 450 bar and a temperature of 98 °C. The main objective was to safely isolate the high-pressure, high-temperature (HPHT) reservoir.
Our team provided a Retrievable Inflatable Bridge Plug (RIBP) equipped with SYMOIL’s proprietary valving system and a high-performance inflatable sealing element. It was deployed via coiled tubing to ensure accurate placement within the wellbore, even in the challenging environment of the Urengoi formation
The RIBP was successfully run in hole and set just below the wellhead in a single coiled tubing run, eliminating the need for additional intervention equipment
Inflation was performed from the surface, establishing a robust pressure barrier capable of withstanding 450 bar and 98 °C, enabling the safe removal of the damaged wellhead
The SYMOIL RIBP™ sealing element, engineered specifically for HPHT operations, maintained effective isolation even against the irregular casing surfaces typical of Achimgas wells
Following the wellhead replacement, the plug was safely retrieved via coiled tubing
Casing pressure testing with WRBP retrievable Isolation plug in large-diameter casing

Casing pressure testing with WRBP retrievable Isolation plug in large-diameter casing
The client required pressure testing of an 11 ¾" (298.5 mm) casing string in an existing wellbore. The objective was to isolate the productive formation to allow pressure testing of the casing at 30 MPa overpressure.
SYMOIL supplied a WRBP (Wireline-Set Retrievable Bridge Plug) designed for deployment and setting via slickline. The plug was deployed using Phoenix, an electronic setting tool that enables precise placement in deviated wells using slickline.
The WRBP was deployed into the well on slickline and set inside the 11 ¾" casing at a depth of 2,374 m in a single run, without requiring additional equipment
The plug was set using the Phoenix electronic setting tool. A secure pressure barrier was established and successfully held 34 MPa, providing full isolation of the casing interior. The casing was then pressure-tested to 30 MPa, confirming the plug’s reliable performance
The Phoenix setting tool, compatible with both slickline and electric line, was pre-programmed during surface preparation for timed deployment and setting via slickline
After testing, the WRBP was successfully retrieved using a standard fishing tool on drill pipe
Design and manufacture of advanced service solutions for the oil and gas industry
