Drill Collars

Drill Collars

Drill Collar O.D. Range

(Inches)

Yield Strength

(Min) (Psi) (N/mm2)

Tensile Strength

(Min) (Psi) (N/mm2)

Elongation(min) with Gage

Length 4 times Diameter

Brinnel Hardness

(Min)

Min. Charpy Impact

Value Ft. lb.

3 1/8" thru 6 7/8"

110000 /758 140000 /965 13% 285 40

7" thru 10" 100000 /689 135000 /931 13% 277 40

Stress Relief GroovesStress relief Grooves at pin and box end reduce fatigue failure.

Bore Back BoxBore back box is nothing but gradual reduction of internal dia by gradually increasing material cross sectional area at critical section. This will ultimately reduce drastically stress concentration during Static / Dynamic loading and prevents box connections

from failure.

Cold Rolled Thread RootsThe cold working on thread roots of the Drill Collars thru inducing compressive

stresses with the help of externally loaded roller will increase life of Drill Collar by protecting against bending stress in fatigue.

Drill Collar Hard BandingHard banding a Drill collar increases the life of Drill Collar while drilling in an

abrasive medium. In hard banding, granular tungsten carbide is deposited upto 1/32" (0.8mm) above Drill Collar O.D. by metal arc, inert gas shielded welding with

controlled preheating & post heating.

Note: Hard Banding at other locations are also catered upon request.

Short Drill CollarsShort Drill Collars are made to suit material, sizes, properties & features as specified above except the length is smaller. Short Drill Collars in various lengths are available in slick or spiral. Standard Short Drill collar lengths are 10, 12, 15 1/2 & 20 ft long.

For Dimensions, please refer to main Drill Collar section.

Drill Collar Groove

Drill Collar GrooveFor Elevator and Slip (as per API-7G). It is possible to add elevator and slip recess to Parveen Drill Collar. These recesses allow one to dispense with lift subs and safety

clamps and to attain savings in operating time. Recommended Slip & Elevator recess dimensions are given below:

All Dimension are in inches U.O.S

Drill Collar Spiral

Spiral Drill CollarsMinimize the potential for differential sticking with Parveen's Spiral Drill Collars.

They reduce the amount of contact between the drill collar and the wall of hole.

All Dimension are in inches U.O.S

Non Magnetic Drill CollarsParveen's Non magnetic drill collars meet the standards for chemical composition

used in directional drilling and in addition have.1. Extremely clean steel.

2. Low permeability, high mechanical properties and superior resistances to corrosion cracking.

3. Display high strength and low permeability throughout the product.

Chemical CompositionThese non magnetic drill collars are of Cr-Mn type. The Chemical Composition will be

such so as to satisfy the following mechanical properties and permeability.

Mechanical Properties

Size Yield Strength (0.2%)

Tensile Strength

(Minimum)

Minimum Elongation

Percent

Charpy Impact Value.

3.1/2" Thru 6.7/8"

110,000 psi(758N/mm2)

120,000 psi(827N/mm2)

18min. 40Ft lb.

7" Thru 11"100,000 psi

(689N/mm2)110,000 psi

(758N/mm2)20

min. 40Ft lb.

PermeabilityRelative Magnetic permeability shall be less than 1.010 through the entire length and the level of such permeability to be uniform. This level of permeability to be uniform.

This level of permeability remains stable despite fluctuation of local plastic deformation and temperature fluctuation during operation.

SizesSize conform to API Spec.7.

Corrosion ResistanceAustenic stainless steel drill collars are subject to cracking due to conjoint action of tensile stress and certain specific corrodents. This is called stress corrosion cracking.

Resistance to corrosion can be demonstrated by subjecting materials from each Drill Collar to the corrosion test as specified in ASTM A262 practice.

Ultrasonic TestingDrill collar bodies are inspected ultrasonically full length over the circumference of the

body before boring. Examination Techniques are specified in ASTM E114(direct contact method) and ASTM E214 and / or ASTM E1001 (immersion method).

Parveen exclusively manufactures Drill Collars in India.

Heavy Wall Drill Pipe

Heavy Wall Drill Pipe

Stress Relief Grooves & Connections Features

- Parveen long stress relief grooves on box ends are standard on 4 1/2" IF, 4" IF & 3 1/2 IF Connections.- API stress relief grooves on pin ends are standard on 4 1/2" IF, 4"IF & 3 1/2 IF connections.- Thread roots are cold worked on all sizes.- All connections are phoshatized, coated with lubricant and provided with steel protectors.

HardbandingTo optimize wear resistance hardbanding is standard on pin and box connections and central upset. The heavy duty hard metal is sintered granular tungsten carbide 10/20 mesh or 20/45 mesh(fine particles). The hardbanding is deposited by an automatic machine after pre-heating the pipe and is followed by stress relieving. Standard pads- One 4" wear pad on both pin and box end. Plus one 1" pad on taper section of box.- Two 3" wear pads on central upsets.

The hardbanding is completely flush on both tool joints and 4/32" oversize on the central upset (fully flush on request).

On Enquiries and Orders Please Specify:

- Nominal Size- Range- API stress relief grooves, if needed- Internal Coating, if needed.

Parveen exclusively manufactures Heavy Wall Drill Pipe in India.

Inside Blowout Preventor

1. STAB BODY

2. RELEASE HANDLE

2a. HANDLE

2b. STUD

3. SUB

4. "O" RING

5. BODY

6. SEAL RING

7. DART 

8. SPRING

9. GUIDE

10. RELEASE ROD

11. HANDLE ROD

12. BASE STAND

12a. BASE PLATE

12b. PIPE

Parveen exclusively manufactures Inside Blowout Preventer in India.

Kelly

Square Kelly

Hex Kelly

Parveen exclusively manufactures Kelly in IndiaKelly Cocks

Kelly Cocks

 

P.NO.

Description

1. Spring 2. Lower Seat 3. Lower Seat O-Ring 4. Operating Stem 5. Stem O-Ring 6. Ball 7. Lower Split Retainer Ring 8. Upper Seat 9. Upper Seat O-Ring 10. Upper Split Retainer Ring 11. Solid Retainer Ring 12. Snap Ring 13. Body

How to Order, Specify:

- O.D. & I.D- Connection- Kelly Cock Upper or Lower- Working Pressure- Type of Service.

Parveen exclusively manufactures Kelly Cocks in India.

Rotary Reamers

Rotary Reamers

Soft, Medium & Hard Formation Cutter

Soft Formation Cutter (SFC)It is hob milled with sharp teeth for soft formation drilling. The leading edge of cutter

is hardfaced with sintered tungsten carbide.

Medium Formation CutterIt is hob milled with flat teeth for medium formation drilling. The leading edge of

cutter is hardfaced with sintered tungsten carbide.

Hard Formation Cutter (HFC)

It has pressed-in tungsten carbide inserts for extremely hard and abrasive formations.

Parveen exclusively manufactures Rotary Reamers in India.

Stabilizers

Integral Blade Stabilizers

Sleeve Stabilizers

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 Instructions1. 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.

Parveen exclusively manufactures Stabilizers in India.Drill Pipe Pup Joints

Drill Pipe Pup Joints

Ordering Information:To order or request quotations on Parveen Drill Pipe Pup Joints please specify:-

- Nominal Size.- Bore Diameter.- Tool Joint O.D.- Size and type of connections (Example: 4 1/2"I.F. box up X 4 1/2" I.F. pin down, etc.)- Overall lebgth, shoulder to shoulder.- 18 degree taper or square shoulder.- Pressed or cast steel thread protectors.

Note: Stress relief groove as per API-7 can also be provided on request.

Parveen exclusively manufactures Drill Pipe Pup Joints in India.Thread Protectors, Lift Plugs & Lift Subs

Thread Protectors, Lift Plugs & Lift Subs

To order or request quotations on Parveen Lift Plugs, Please specify:

- Drill Collar O.D.- Drill collar connection size and type.- Bore diameter, if required.

To order or request quotations on Parveen Lift Subs, Please specify:

- Drill Collar O.D.- Tool Joint O.D.- Tapered or square shoulder- Drill pipe O.D.- Drill collar connection size and type.- Bore diameter, if required.- Pressed or cast steel thread protectors.

Parveen exclusively manufactures Thread Protectors, Lift Plugs & Lift Subs in India.

Tool Joints

Tool Joints(For Dimensions of different parameter refer API-7)

Mechanical PropertiesYield Strength

(PSI)Tensile

Strength(PSI)

Elongation Hardness Charpy -VImpact

1,20,000 PSI(Min)

1,40,000 PSI(Min)

13%(Min)

285 BHN(Min)

40 FT-LB(Min)

How to Order:

- Drill Pipe size, P.P.F, Material, Type of upset and Range.- Tool Joint O.D. & I.D.- Connection Size & Type.- Tool Joint Length (API Standard or 1" or 2" longer than standard available on both Box & Pin.)- Box O.D, whether hard banded or without hard banded, including type of hardbanding desired.- Type of internal coating required.- Description of any special marking required, such as stamping or string number.

Parveen exclusively manufactures Tool Joints in India.