PMM REPLACEABLE/INTERCHANGEABLE SLEEVE STABILIZERS
PMM Replaceable Sleeve Stabilizers ensure durable support and smooth operation, even under heavy workloads.
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PMM REPLACEABLE / INTERCHANGEABLE SLEEVE STABILIZERS
Replaceable sleeve stabilizers consist of replaceable sleeves that are mounted on the mandrel body. Consisting of a single mandrel and a replaceable sleeve, replaceable sleeve stabilizers are ideal in remote areas, where repairs and redressing of the blades are not feasible. The sleeve can be changed easily on the drill floor without the need for special tools. As an additional benefit, one mandrel can be used with sleeves of different sizes, reducing equipment costs.
The crown surface and the leading edge of the sleeves are provided with protection against abrasion through hard facing. HF-2000, HF-3000,HF-4000 & HF-5000 types of hard facing can be provided based on customer requirements. The sleeve is screwed onto the middle threads on the outside of the mandrel and torqued up to the recommended value.
Mandrels are manufactured from AISI 4145H modified alloy steel fully heat treated (quenched and tempered) full length and sleeves are manufactured from EN-19 steel. The neck regions of mandrels have tensile properties and impact energy requirements equal to those of drill collars of the same size as specified in API 7-1 specification.
Deep spiral machining is performed to allow maximum mud circulation. Sleeves are provided with 3 number of blades. Sleeves are provided with 250 to 360 degrees wrap angle (hole wall contact). Wrap angle can be tailored to customer requirements.
Rotary shouldered connections of the mandrels are threaded as per the requirements of API 7-1 specification and thread gauging & thread inspections are conducted as per requirements specified in API 7-2 specification. Based on customer requirements the end connections can be provided with pin stress relief grooves, box bore back features and cold rolled thread roots. A gall-resistant treatment of manganese phosphate is applied to the threads and sealing shoulders of both the upper and lower connections. Dimensions of the replaceable sleeve stabilizer can be tailored to customer requirements.
| Hole size/ Sleeve OD Range |
Neck Diameter/ Mandrel OD |
Inside Diameter/ Bore |
Connection Box x Pin (String) |
Connection Near Bit Lower |
Blade Width (min) |
Sleeve Length (min) |
Upper Neck Length |
|---|---|---|---|---|---|---|---|
| 5-1/8 to 7-3/8 | 4-3/4 | 2 to 2-1/4 | NC38 | 3-1/2 REG | 2 | 14 | 20-30 |
| 7-1/2 to 7-7/8 | 6-1/2 | 2-13/16 | NC46 | 4-1/2 REG | 2.5 | 14 | 20-30 |
| 8 to 9-5/8 | 6-1/2 to 6-3/4 | 2-13/16 | NC50 | 4-1/2 REG | 2.5 | 14 | 20-30 |
| 9-1/2 to 15-1/2 | 8 | 2-13/16 | 6-5/8 REG | 6-5/8 REG | 3 to 3.5 | 14 | 20-30 |
| 15-5/8 to 20 | 8 | 2-13/16 | 6-5/8 REG | 7-5/8 REG | 3.5 to 4 | 18 | 25-30 |
| 12-1/4 to 20 | 9-1/2 | 3 | 7-5/8 REG | 7-5/8 REG | 3 to 4 | 18 | 20-30 |
| 15-5/8 to 26 | 9-1/2 | 3 | 7-5/8 REG | 7-5/8 REG | 3 to 4 | 18 | 25-30 |
| 20 to 26 | 9-1/2 to 11 | 3 | 7-5/8 REG | 8-5/8 REG | 4 | 24 | 25-30 |
| >26 | 11 | 3 | 8-5/8 REG | 8-5/8 REG | 4 | 24 | 25-30 |
PMM Sleeve Stabilizers
HARD FACING OF STABILIZERS
Hard facing is essential for drill string stabilizers, improving wear resistance, service life, and gauge control. As one of the most wear-prone components in the Bottom Hole Assembly (BHA), the stabilizer needs a durable surface to withstand harsh downhole conditions.
PMM REPLACEABLE SLEEVE STABILIZERS
PMM Replaceable Sleeve Stabilizers offer easy maintenance and longer tool life through a removable sleeve design. The replaceable sleeve eliminates the need to scrap the entire tool, ensuring consistent gauge control and reduced downtime.
