Description
Drill Pipe Engineered for Torque, Tension and Fluid Circulation
Shangshanpetro supplies new drill pipe for onshore and offshore drilling programs in E75, X95, G105 and S135 steel grades. Select the outside diameter, nominal weight, length range, upset and tool-joint connection to match the drill-string design.
Every quotation is based on the required operating envelope and inspection scope. Send the size, grade, connection, quantity and destination to receive a technical review and commercial offer.
Supply Overview
Quick answer: Drill pipe is the hollow steel tubular that transfers rotation and drilling torque from the surface, carries axial loads, and provides the internal flow path for drilling fluid to the bit. It forms most of the drill string between the surface equipment and the bottom-hole assembly.
Why Source Drill Pipe from Shangshanpetro?
The correct pipe is defined by more than outside diameter. Body grade, nominal weight, upset geometry, tool-joint connection, hardbanding and inspection requirements must work together as one drill-string component.
01
API-Based Manufacturing
Pipe body, upset, heat treatment, tool-joint machining and inspection are controlled against the specified API 5DP and purchase-order requirements.
02
Multiple Steel Grades
E75, X95, G105 and S135 options allow the string design to balance strength, fatigue performance, operating load and project economics.
03
Connection Options
NC, IF, FH and other specified tool-joint connections can be evaluated for compatibility with the existing drill string and handling equipment.
04
Wear Protection
Optional hardbanding and surface protection help address tool-joint wear, casing contact, transport and storage conditions.
05
Inspection Documentation
Material traceability, dimensional inspection, mechanical testing and specified NDT documentation can be included in the supply scope.
06
Export Preparation
Thread protectors, bundling and seaworthy packing are arranged according to pipe size, shipment method and destination requirements.
API Drill Pipe Sizes and Specifications
The table below shows common configurations for initial selection. Final dimensions, tool-joint data and performance ratings must be confirmed against the requested grade, weight, upset, connection and current approved product data.
| Pipe OD | Common connection | Available grades | Example nominal weight | Example wall thickness |
|---|---|---|---|---|
| 2-7/8 in | NC31 | E75, G105, S135 | 10.40 lb/ft | 0.362 in |
| 3-1/2 in | NC38 | E75, G105, S135 | 13.30 lb/ft | 0.368 in |
| 4-1/2 in | NC46 | E75, G105, S135 | 16.60 lb/ft | 0.337 in |
| 5 in | NC50 | E75, G105, S135 | 19.50 lb/ft | 0.362 in |
| 5-1/2 in | 5-1/2 FH | E75, G105, S135 | 21.90 lb/ft | 0.361 in |
The combinations shown are representative, not a complete performance table. Do not derive tensile, torsional, collapse or pressure ratings from OD alone. Request the approved data sheet for the exact configuration.
Drill Pipe Grades: E75, X95, G105 and S135
API drill pipe grades indicate minimum yield-strength levels, but the highest grade is not automatically the best selection. The engineer must also consider well profile, anticipated tension and torque, fatigue exposure, corrosion environment, inspection category and connection capacity.
E7575 ksi minimum yield
Commonly considered where moderate mechanical loads and project economics are the main drivers.
X9595 ksi minimum yield
An intermediate strength option for drilling programs that require more capacity than E75.
G105105 ksi minimum yield
Widely used for demanding drilling loads where a higher-strength pipe body is required.
S135135 ksi minimum yield
A high-strength grade for deeper and more demanding service, subject to full design verification.
Tool Joints, Connections and Upset Types
Drill pipe body and tool-joint connection prepared for oilfield service.
Connection compatibility must be confirmed
The tool joint transmits torque and axial load between pipe joints. Connection selection must match the drill-string design, make-up torque, internal-diameter requirement, rig handling equipment and existing inventory.
- NC connections: common numbered rotary-shouldered connections.
- IF and FH connections: available where specified and compatible with the planned string.
- IU: internal upset.
- EU: external upset.
- IEU: internal-external upset.
State the complete connection designation rather than supplying OD alone. If interchangeability is required, provide the mating component details or drawing.
R1, R2 and R3 Drill Pipe Lengths
API drill pipe is commonly ordered by length range. Range 2 is widely used, while the final selection depends on derrick capacity, setback arrangement, transport restrictions and operating practice.
| Length range | Typical length interval | Selection consideration |
|---|---|---|
| R1 | 18-22 ft | Shorter joints for specific handling, transport or operational requirements. |
| R2 | 27-30 ft | Common drilling range for many conventional rig programs. |
| R3 | 38-45 ft | Longer joints that require compatible rig handling and transport planning. |
Confirm the applicable purchase specification and exact permissible length distribution before ordering.
Manufacturing and Quality-Control Scope
Inspection scope should be agreed before production. The purchase order can define required standards, acceptance criteria, documentation and third-party witness points.
Important: Sour-service, low-temperature, high-fatigue or other special environments require project-specific material and engineering review. State these conditions in the enquiry rather than selecting a grade from yield strength alone.
How to Specify Drill Pipe for a Quotation
For an accurate factory quotation, provide the following information. Where some parameters are not yet fixed, send the well and rig requirements for engineering review.
Drill Pipe vs Heavy Weight Drill Pipe vs Drill Collar
These components occupy different positions in the drill string and should not be selected as interchangeable products.
| Component | Primary role | Typical position | Key selection focus |
|---|---|---|---|
| Drill pipe | Transfers rotation, torque and drilling fluid while carrying axial loads. | Forms most of the drill string. | Grade, weight, connection, fatigue and tensile capacity. |
| Heavy weight drill pipe | Provides a transition in stiffness and additional weight. | Often between drill pipe and drill collars in the BHA transition area. | Section geometry, wear, stiffness transition and connection. |
| Drill collar | Provides weight on bit and stiffness near the drilling assembly. | Lower portion of the bottom-hole assembly. | OD, ID, length, material, spiral design and connection. |
Drill Pipe Frequently Asked Questions
What is drill pipe used for?
Drill pipe transfers rotary motion and drilling torque to the bottom-hole assembly, carries axial loads, and circulates drilling fluid through its internal bore to the drill bit.
What drill pipe sizes are available?
Shangshanpetro supplies common oilfield drill pipe sizes from 2-3/8 in through 6-5/8 in, subject to grade, nominal weight, upset, connection and production availability. The table above shows several common configurations.
What is the difference between E75, X95, G105 and S135 drill pipe?
The grade designation corresponds to a minimum yield-strength level: 75, 95, 105 and 135 ksi respectively. Grade selection must also consider fatigue, corrosion, connection capacity, well profile and the complete load envelope.
What do R1, R2 and R3 mean?
They are API drill pipe length ranges. Typical intervals are 18-22 ft for R1, 27-30 ft for R2 and 38-45 ft for R3. Confirm the exact permitted length distribution in the purchase specification.
Is 2-7/8 inch drill pipe available?
Yes. A common example is 2-7/8 in drill pipe with NC31 connection, with the final grade, nominal weight, wall thickness, upset, length range and quantity confirmed in the quotation.
Can you supply S135 drill pipe?
Yes, S135 drill pipe can be supplied in compatible sizes and configurations. Provide the size, weight, connection, length, inspection scope and service conditions for confirmation.
Can hardbanding be applied to the tool joint?
Optional hardbanding can be specified. The material, application area, casing-compatibility requirement and inspection criteria should be stated before production.
What information is needed to obtain a drill pipe price?
Send OD, nominal weight, grade, length range, connection, upset type, tool-joint dimensions, hardbanding, inspection documents, quantity, delivery destination and requested schedule.
Request a Drill Pipe Quotation
Send your drill-string specification or required size, grade and connection. Shangshanpetro will review the configuration and prepare a technical and commercial response.
- Size, weight and grade
- Connection and upset type
- Length range and quantity
- Inspection and documentation
- Destination and delivery date
Technical note: Product availability and ratings depend on the exact configuration and current approved manufacturing data. Final selection remains subject to purchaser engineering review and the applicable project specification.
