More Reliable Wellhead Recovery
The ProLATCH* wellhead retrieval system combines a high-performance wellhead spear, hydraulic pipe cutter, and nonrotating stabilizers to recover surface casing and subsea wellheads for plug and abandonment operations.
Simplify mechanical abandonment operations
The ProLATCH wellhead retrieval system is designed to simplify mechanical abandonment operations by eliminating the need for a marine swivel and a long drill collar string and reducing workstring handling time. Once engaged, the system can retrieve both the surface casing and the subsea wellhead.
Wellhead Retrieval System
The casing is severed mechanically, and the wellhead spear remains engaged for a simultaneous retrieval of the casing section and wellhead.
Reliable recovery of surface casing
and wellhead
To begin a casing retrieval operation, the wellhead spear is engaged and overpull is applied in order to assist with tension cutting. The hydraulic pipe cutter severs the casing, and a pressure indication confirms that the cut has been successful. This feature eliminates the possibility of pulling the cutter out of the hole before the cutting operation is complete. Once the casing is severed, the ProLATCH system wellhead spear remains engaged in order to recover the surface casing, wellhead and guide base to surface. A customized range of wellhead segment grapples are available to ensure effective engagement during wellhead recovery.
The system can be operated using a top-drive for rotary cutting operations or deployed with a positive displacement motor (PDM).
Reduce bowing effect in the workstring
After the BHA is run downhole and the spear is engaged to the stuck casing the PullMaster Anchor and Pulling system is activated to provide up to 1.2 Mlbf to recover stuck casing. The tool can be reset and activated multiple times as required.
Document Downloads
| Title | Link |
|---|---|
| Well Intervention Through 7in Casing Colombia Performance Bulletin | |
| K-Mill Section Milling Offshore Qatar Performance Bulletin | |
| ProLatch Japan Performance Bulletin | |
| Red Baron Catalog | |
| WIS-ProMAXX Pipe Cutter_Factsheet | |
| WIS-ProMAXX Hydraulic Spear-Factsheet | |
| ProLATCH N_APAC_Australia Performance Bulletin | |
| ProLATCH N_APAC_W Australia Performance Bulletin | |
| CutPull_APAC_Indonesia Performance Bulletin | |
| PullMaster_ESSA_N Sea Performance Bulletin | |
| ProLATCH Subsea PA_Japan_APAC Performance Bulletin | |
| PullMaster Hydraulic Pulling Factsheet | |
| CutMaster X3_PipeCutter Factsheet | |
| Well Abandonment Brochure |
Benefits
- Eliminates the need for marine swivel or long drill collar string
- Can cut and retrieve both the casing string and the subsea wellhead in one run
- Robust design reduces bowing effect in the workstring, as weight does not have to be slacked off onto a marine swivel
- Minimizes possible drillstring failure because the drillstring is not rotated in open water.
