Description
The Compressional Annulus Casing Packer (ACP) is a downhole sealing tool engineered to provide a reliable annular seal between casing strings or between the casing and the open hole in oil and gas wells. Designed with a special solid core packer structure, it ensures dependable sealing performance even in complex wellbore geometries such as deep, ultra-deep, directional, and horizontal wells.
Annulus casing packers are widely used in well completion and cementing operations to isolate annular spaces, maintain well integrity, and prevent fluid migration. They are critical components for achieving zonal isolation and supporting pressure control during drilling and completion phases.
Product Overview
An annulus casing packer (ACP) is installed as part of the casing string or around the casing to seal the annular space in the wellbore. It provides a mechanical barrier that helps isolate fluids, improve zonal separation, and enhance cementing efficiency. Unlike inflatable packers that rely on pressure to expand elastomeric elements, compressional packers use a solid core design to maintain contact and seal between the casing and surrounding surfaces.
The Compressional ACP from Shangshan Petro is designed for robust sealing performance under high temperature conditions, with a maximum temperature rating between 150 °C and 170 °C. Its sealing ability makes it suitable for a range of well types including standard onshore, directional, horizontal, and side-tracking wells.
Key Features & Advantages
Reliable Solid Core Seal
Special packer core design provides a dependable seal between casing strings or between casing and open hole, enhancing zonal isolation.High-Temperature Resistance
Capable of operating in environments with max working temperatures from 150 °C to 170 °C, suitable for high-temperature well conditions.Wide Application Conditions
Suitable for deep wells, ultra-deep wells, directional wells, horizontal wells, and side-tracking wells, offering field versatility.Custom Quantity Based on Well Requirements
The number of packers used can be adjusted according to casing size and the diameter of the open hole to provide optimal sealing performance.
Technical Specifications
| Size (in) | Max O.D. (mm) | Max Isolated Borehole or Casing I.D. (mm) | Thread |
|---|---|---|---|
| 4-1/2″ | 139.7 | 195.3 | LTC / BTC |
| 5-1/2″-I | 174.6 | 250.8 | LTC / BTC |
| 5-1/2″-II | 190.5 | 295.3 | LTC / BTC |
| 7″ | 203.2 | 265.1 | LTC / BTC |
| 9-5/8″ | 285.8 | 387.4 | LTC / BTC |
Please send us your required specifications, parameters, or technical drawings. Our expert team will help confirm the suitable model and provide a factory quotation within 24 hours.
Email: info@shangshanpetro.com
Contact: Contact Us for a Quote
Applications
The Compressional Annulus Casing Packer (ACP) is widely used in:
Zonal isolation during cementing and completion in oil & gas wells
Sealing annular spaces between multiple casing strings
Preventing fluid migration between formations
Maintaining well integrity in deep, horizontal, and deviated wells
Supporting pressure control during drilling and completion operations
Annulus casing packers help ensure that cement and formation boundaries remain sealed, providing a mechanical barrier that supports long-term well integrity.
Frequently Asked Questions
Q1: What is an ACP (Annulus Casing Packer)?
An ACP (annulus casing packer) is a downhole sealing device installed to provide a pressure-tight seal in the annular space, either between casing strings or between casing and open hole, to prevent fluid migration and maintain well integrity.
Q2: How does a compressional ACP differ from inflatable packers?
A compressional ACP uses a solid core sealing design that relies on mechanical compression to seal the annulus, whereas inflatable packers use elastomer sleeves that expand by hydraulic or pneumatic pressure.
Q3: What well conditions is this packer suitable for?
This compressional ACP is suitable for deep, ultra-deep, directional, horizontal, and side-tracking wells where reliable annular sealing and temperature resistance are required.
Q4: Can multiple packers be used in the same well?
Yes. The quantity of ACPs can be selected based on casing size and the dimensions of the open hole to provide optimal sealing performance throughout the annulus.
