PARVEEN Stabilizers are designed to control hole deviation, prevent differential sticking and minimise dogleg severity and thus provide optimum drill bit's performance.

For ordering stabilizers, Parveen recommends the following rib outside diameters.
- upto 10" diameter - 1/32"
  under hole size.
- upto 15" diameter - 1/16"
  under hole size.
- over 15" diameter - 3/32"
  under hole size.
Most stabilizers loose their stability effect when diameter loss reaches 1/8" to 3/16". At this stage, the stabilizer is recomended for replacement

Integral Blade Stabilizers
Parveen's Integral blades stabilizers are designed with thru hard faced spiral ribs and are available both as string or near bit. Stabilizers in standard design are of right hand spirals. Even configuration for lefthand spirals can be provided.

While in open spirals, the three ribs form a wall contract surface of 132 degree & 95 degree (in straight hole drilling), in the tight spirals, the three ribs form a wall contract surface of 360 degree and 260 degree thus ensuring drill string centralised in deviated holes.

Features of Integral Blade
- Ribs are milled directly from
  the body.
- High amount of tungsten carbide inserts spread over a large wall contract area, results in longer tool life.
- Ribs are provided with mirror type finish with a view to minimise torque and to provide guidance to the bit and collar string.
- Worn ribs of hardfaced stabilizers (inserts by a metal bond) are repairable in Parveen's Shop.

Sleeve Type Stabilizers:
This stabilizer has been designed with a field replaceable sleeve. This sleeve is screwed into a one-piece body and can easily be made up by using rotary tongs.

The fishing neck and sleeve mandrels are available with the same end connection as drill collars.

Sleeves are designed with tungsten carbide hard faced surface (Type-A) or with pressed in tungsten carbide buttons (Type-B). Both types are available at customer's request. The worn hard facing can be repaired at Parveen's shop.

Ordering Instructions
1. Hole Size.
2. Drill Collar O.D.
3. Size & Type of upper and lower connections.
4. Mandrel Size (D or E).
5. Mandrel Bore (G).
6. Type of Sleeve (A or B).
7. Cast Steel or Pressed steel thread protectors.