c
c c c
# $ %& ! " % c '( ) *
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 Grooves at pin and box end reduce fatigue failure.
# #-#. Bore 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. The 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. c $ # Hard 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. / Hard Banding at other locations are also catered upon request. c Short 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.
c
,
c , For Elevator and Slip (as per API-7G). It is possible to add elevator and slip recess to ,
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
c % % c Minimize the potential for differential sticking with ,
0 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
c ,
0 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. % These 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.
1
3.1/2" Thru 6.7/8" 7" Thru 11"
% ( 2 3 ( 110,000 psi 120,000 psi 18 (758N/mm2) (827N/mm2) 100,000 psi 110,000 psi 20 (689N/mm2) (758N/mm2)
%&% '( min. 40 Ft lb. min. 40 Ft lb.
*& Relative 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. 1 Size conform to API Spec.7.
Austenic 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. 4 Drill 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). ,
exclusively manufactures Drill Collars in India. $ ,&5c %
$ ,&5c %
+
, 6 ) (
- ,
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. $ * To 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). 7( % +&/ - Nominal Size - Range - API stress relief grooves, if needed - Internal Coating, if needed.
,
exclusively manufactures Heavy Wall Drill Pipe in India.
# ( , 8 9##c ! 9 $9c! $9c! * 4c : 4# " ;; < #c = 9! > c9 ? @ 4c 82 ! 9 c 88 $9c! c 8 #9 9c 8 #9 !9 8 *
,
exclusively manufactures Inside Blowout Preventer in India. A &
7( A &
$ .A &
,
exclusively manufactures Kelly in India A &-
A &-
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13.
c % Spring Lower Seat Lower Seat O-Ring Operating Stem Stem O-Ring Ball Lower Split Retainer Ring Upper Seat Upper Seat O-Ring Upper Split Retainer Ring Solid Retainer Ring Snap Ring Body
$ B% +&/ - O.D. & I.D - Connection - Kelly Cock Upper or Lower - Working Pressure - Type of Service.
,
exclusively manufactures Kelly Cocks in India.
&
&
+B (6$ ) ( +) ( ) It is hob milled with sharp teeth for soft formation drilling. The leading edge of cutter is hardfaced with sintered tungsten carbide. () ( It is hob milled with flat teeth for medium formation drilling. The leading edge of
cutter is hardfaced with sintered tungsten carbide. $ ) ( $) It has pressed-in tungsten carbide inserts for extremely hard and abrasive formations.
,
exclusively manufactures Rotary Reamers in India.
*1
# *1
, *1
, &% *1 / 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 ,
0 shop. ( 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.
,
exclusively manufactures Stabilizers in India. c % (%C
c % (%C
+ / To order or request quotations on ,
c % (%C 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. / Stress relief groove as per API-7 can also be provided on request. ,
exclusively manufactures Drill Pipe Pup Joints in India. B!+( 6!+(*
B!+( 6!+(*
7( 7( ,
!+( B % +&/ - Drill Collar O.D. - Drill collar connection size and type. - Bore diameter, if required.
7( 7( ,
!+(*B % +&/ - 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.
,
exclusively manufactures Thread Protectors, Lift Plugs & Lift Subs in India.
C
C ) c +++ % + 9D> % $ %&D' % 8B 2B222 8B"2B222 8:3 ?<#$ "2) D!# $ / - 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. ,
exclusively manufactures Tool Joints in India.
