Downhole API 5DP S135 seamless drill pipe body

Product Introduction:

API 5DP Drill Pipe Body: API Spec 5DP is the global prevailing standard for steel drill pipes used in oil and gas drilling operations, governing material, dimensions, mechanical properties, inspection and other technical requirements. Our main supply is drill pipe body. The API 5DP drill pipe body is manufactured from seamless steel pipe.

Product Advantage:

I. Core Basic Functions

1.1 Torque Transmission

As the main part of the drill string, the pipe body transfers rotary torque from surface rig to downhole drill bit to break rock formations, acting as the key component for power transmission during drilling.

1.2 Axial Load Bearing

It withstands huge tension, compression, bending load and alternating vibration throughout operation. It performs reliably in vertical wells, directional wells and extended-reach wells, avoiding deformation and fracture and ensuring overall stability of the drill string.

1.3 Drilling Fluid Conduit

With hollow structure, the pipe body serves as the flow path for drilling mud. It delivers mud to the bottom hole to cool and lubricate the bit, carry cuttings to surface and balance formation pressure.

1.4 Drill String Connection

The pipe body ends can be processed with various upsetting types in accordance with API standards. It can be connected with tool joints to assemble drill strings of different lengths for wells of various depths, featuring easy assembly and good compatibility.

II. General Product Information

2.1 Product Type

We mainly supply seamless drill pipe body. Multiple upset designs (internal upset, external upset, integral upset) are available for pipe ends to match welded tool joints.

2.2 Product Specification Levels

Three levels are defined: PSL 1, PSL 2 and PSL 3. Higher levels impose stricter requirements on impact toughness, chemical composition, dimensional tolerance and NDT. PSL 3 is applied to ultra-deep wells, HPHT wells and sour service wells.

2.3 Common Steel Grades

Standard grades include E75, X95, G105 and S135. The figures stand for minimum yield strength. E75 is for conventional shallow & medium wells; high-strength S135 is suitable for ultradeep wells and extended-reach wells.

2.4 Size & Length

Standard outer diameter ranges from 2 3/8″ to 6 5/8″. Three length ranges (R1, R2, R3) are available. R2 (27~32 ft) is the most widely used size in oilfields.

III. Core Technical Requirements

All drill pipe bodies comply fully with API 5DP. Strict controls are implemented on dimensional tolerances (OD, wall thickness, straightness), chemical composition and mechanical

Technical Parameters:

Product Uses:

Typical Application Scenarios

Conventional service: Onshore oil & gas exploration and development for shallow and medium wells;

Complex service: Directional wells, horizontal wells, extended-reach wells and offshore drilling platforms;

Severe service: Cold regions, HPHT wells and H₂S-containing sour gas/oil wells.