Downhole Tools Rental

Drill CollarOur Drill collars are manufactured from AISI 4145H Mod. chromium molybdenum alloy steel, drill collar bars are full-length uniformly quenched and tempered to obtain API Spec.7-1, NS-1 and DS-1 properties. Mill test certificates including mechanical properties, chemical analysis and nondestructive inspections are supplied with all drill collars. Mill test certificates guarantee conformance to API Spec. 7-1, NS-1, DS-1 and customer requirements. Drill collar bars are trepanned and inside diameters are gauged to API Spec. 7-1 specification with a 10ft drift mandrel. Bar surface finish is hot-rolled and mill-finish for diameter below or equal to 8 ½ and forged and peeled for diameter above 8 ½. Spiral drill collars are grooved to avoid differential pressure sticking in the hole. Slip and elevators recesses are machined in accordance with API Spec.7-1 to improve handling efficiency and safety.

stabilizerOur Stabilizers are manufactured from forging single piece of AISI 4145H modified alloy steel, full length quenched and tempered to obtain API Spec. 7-1, NS-1 and DS-1 properties. Ultrasonic inspection and MPI inspections are performed on each forging over its full length and section, after rough machining according to API Spec 7-1, NS-1 and DS-1. Mill test certificates including mechanical properties, chemical analysis and inspections are supplied with all stabilizers.

And Our Non-Magnetic Stabilizers are manufactured from chromium manganese austenitic low carbon alloy obtained by VOD process and high-speed press warm forging process combining chemical analysis and temperature /time cycle to get API Spec. 7-1 properties. Ultrasonic inspection and MPI inspections are performed on each forging over its full length and section, after rough machining according to API Spec 7-1. Mill test certificates including mechanical properties, chemical analysis, magnetic properties and inspections are supplied with all stabilizers.

Hole Openers are versatile tools used for hole enlargement up to 42 “. Body is machined from AISI 4145 Mod., fully heat-treated forging to API Spec. 7-1 with cutter arms welded onto the body. Cutter arms are hardfaced and equipped with removable of fixed cutter. Hole Opener have three to seven jet tubes with replaceable nozzles so that jet streams quickly clean the cutters and the enlarged hole.

Rotary subAll rotary subs, Lift Subs and Lift Plugs are manufactured from AISI 4145H modified chromium molybdenum alloy steel, fully-quenched and tempered to obtain API Spec. 7-1 mechanical properties. All connections are machined according to API Spec.7-2 and thread roots are cold worked, phosphatized and coated with API thread compound and equipped with protectors.

Non-mag Non-Magnetic Drill Collars Non-Magnetic Flex Collars, Pony Collars and Stabilizers are produced from Amagnit 501 and Amagnit 601. Amagnit 501 and 601 are chromium manganese austenitic low carbon alloy steels obtained by VOD process, and rotary hammer warm forging process combining chemical analysis and temperature / time cycle. Amagnit 501 and 601 are resistant to stress corrosion cracking with high mechanical properties, low magnetic permeability and no tendency to galling. Ultrasonic inspection and MPI inspections are performed on each forging over its full length and section, after rough machining according to API Spec 7-1. A compressive layer is applied to the bore of the collars to increase the resistance to stress corrosion cracking.Accordion Content

Heavy Weight Drill PipeIntegral Heavy Weight Drill Pipes Heavy Weight Drill Pipes are machined from 31ft bars of AISI 4145H Mod. alloy steel, full-length quenched and tempered to obtain the API Spec. 7-1, NS-1 and DS-1 mechanical properties. All Heavy Weight Drill Pipe bars are trepanned and inside diameters are gauged to API Spec.7-1 specification,

Welded Heavy Weight Drill Pipes
Welded Heavy Weight Drill Pipes consists of two tool joints and one central tube, assembled by welding. Tool joints are made from AISI 4145H Mod. alloy steel quenched and tempered to obtain the API Spec. 7-1, NS-1 and DS-1 mechanical properties. Central tube is made from 1340 normalized steel to achieve API Spec.7-1, NS-1 and DS-1 mechanical properties.
Spiral Heavy Weight Drill Pipes
The Heavy Weight Drill Pipes are machined from 31ft bars of AISI 4145H Mod Alloy steel, full-length quenched and tempered to obtain the API spec. 7.1, NS-1 and DS-1. Mechanical properties. ​

Drill pipeDrill pipes are manufactured from upset pipe body ends and friction welded on tool joints. Tool joints are forged from chromium molybdenum alloy steel and uniformly quenched and tempered to obtain API Spec.7-1 properties. Pipe body standard grades, covered by API Spec. 5DP/ISO 11961 are: Grade E and High-strength grades X, G and S The type of upset are: EU, IU,IEU Tool Joint s are weld to the pipe body by friction welding. After welding, an area wider than the weld zone to tempering temperature. Each weld is 100% inspected according to API Spec. 5DP. Drill pipes are also provided with internal coating and the different types of box tool joint hardbanding.

Mechanical Properties of Tool Joint

Yield Strength

psi

Tensile Strength

Psi

Elongation

%

Charpy V Impact

ft-lb

Brinell

Hardness

Min.

Max.

Min.

Min.

Min. (700F)

Min.

120,000

165,000

140,000

13

40 average

285 HB

Mechanical properties of pipe body

Grade

Yield Strength

psi

Tensile Strength

Psi

Elongation

%

Charpy V Impact

ft-lb

Min.

Max.

Min.

Min.

Min. (700F)

Grade E

75 000

105 000

100 000

a

40 average

Grade X

95 000

125 000

105 000

a

40 average

Grade G

105 000

135 000

115 000

a

40 average

Grade S

135 000

165 000

145 000

a

40 average

The minimum elongation is calculated with the formula e=625000A0.2/U0.9 A=cross sectional area of tensile strength (sq.in.) U=specific tensile strength (psi)