COSL is capable of designing the whole wellbore layered gas injection completion process scheme of CCUS/CCS well and develop customized tools for carbon dioxide storage and layered gas flooding in offshore oil and gas fields.
Technical Principles
Carbon dioxide is injected into the underground reservoir through a hydraulic controlled intelligent layered gas injection pipe column. The hydraulic controlled intelligent layered gas injection tool achieves precise adjustment of the injection volume for each layer, and the layered sand control is combined with insertion sealing to achieve interlayer sealing of each reservoir layer. V0 level cable production packers ensure the integrity of the wellbore, and permanent optical fibers are used to monitor the temperature and pressure profile and wellbore integrity in real time.
Technical Characteristics
Suitable for highly deviated wells, horizontal wells, and deep wells;
Long term real-time monitoring of parameters such as pressure, temperature, and flow rate in various underground layers;
The surface hydraulic control regulation method has strong adaptability to complex fluid environments underground.
Technical specifications of core tools
Technical specifications of hydraulic control intelligent layered gas injection tool
| Maximum OD (mm) |
95 |
| Minimum ID (mm) |
37 |
| Material |
13Cr-L80 |
| Pressure rating |
5000psi |
| Temperature rating |
150℃ |
| Adjustable levels |
8 |
| Upper thread |
2-3/8"VAM TOP BOX |
| Lower thread | 2-3/8"VAM TOP PIN |
Technical specifications of 7” V0 grade cable production packer
| Applicable casing size |
7"（177.80mm） |
| Casing scale | 23-29lbs/ft |
| Maximum OD (mm) | 147.8mm(5.82") |
| Minimum ID (mm) |
62mm(2.44") |
| Material | 13Cr-L80 |
| Material of rubber&O-ring | HNBR |
| Setting method | Hydraulic Setting |
| Setting pressure | 6500psi |
| Pressure rating | 5000psi |
| Temperature rating | 150℃ |
| Releasing method | Cut and pull up |
| Pipeline connection thread type | 1/4" Jamnut |
| Tensile strength |
246klbs |
Technical specifications of 7” V0 level top packer
| Applicable casing size |
7"（177.80mm） |
| Casing scale | 23-29lbs/ft |
| Maximum OD (mm) | 151.89mm(5.98") |
| Minimum ID (mm) |
101.6mm（4"） |
| Material | 13Cr-L80 |
| Setting method | Setting tool |
| Setting pressure | 2800psi |
| Pressure rating | 5,000psi |
| Temperature rating | 150℃ |
| Releasing method | Use specified retrieval tool to release |
| Pipeline connection thread type | 4.5"-4 ACME-2G LH BOX |
| Tensile strength |
207klbs |
| Upper thread type |
4.5"-4 ACME-2G LH BOX |
| Lower thread type | 5"-8 STUB ACME-2G BOX |
