Goldenman Outlines API 16A Double Ram BOP Configurations for International Drilling Projects

Chinese oilfield equipment manufacturer details available bore sizes, pressure ratings, ram configurations and technical requirements for drilling and well-control applications.

DONGYING, China - Goldenman Petroleum Equipment Co., Ltd., a Chinese manufacturer and exporter of oilfield equipment, has outlined its API 16A Double Ram Blowout Preventer configurations and key technical selection requirements for international drilling and well-control projects.

The company's double ram BOP portfolio covers nominal bore sizes ranging from approximately 4-1/16 to 26-3/4 inches, with available rated working pressures from 2,000 to 20,000 psi, depending on the selected configuration.

Designed for use in drilling, workover and well-servicing
operations, the equipment can be configured with different ram assemblies, connection arrangements and operating requirements to match specific well-control programs.

Goldenman is emphasizing the importance of selecting BOP equipment according to actual well conditions, tubular specifications and system compatibility rather than relying on nominal bore size and pressure rating alone.

Double Ram BOP Design for Well-Control Applications

A double ram blowout preventer incorporates two independently operated ram cavities within one pressure-containing body.

Each cavity can accommodate a specified ram assembly, allowing the equipment to perform different sealing or emergency functions according to the approved BOP stack arrangement.

Available ram configurations include fixed pipe rams, variable-bore rams, blind rams, shear rams and blind-shear ram assemblies.

Fixed pipe rams are designed to seal around specified tubular outside diameters, while variable-bore rams accommodate a qualified range of tubular sizes.

Blind rams provide open-bore closure when no tubular is positioned across the ram cavity. Shear and blind-shear configurations are selected according to the required tubular-cutting and sealing functions.

The final arrangement depends on the well-control program, equipment qualification and operating conditions.
By incorporating two ram cavities in one body, a double ram BOP can provide different closure functions within a single equipment assembly.

However, the choice of ram arrangement must account for the drill-string program, required well barriers and the system's hydraulic operating capabilities.

Available Bore Sizes and Pressure Ratings

Goldenman offers standard and project-specific double ram BOP configurations for different drilling and well-servicing requirements.

Its standard 2FZ-series portfolio includes 5,000 psi configurations with nominal bore sizes corresponding to approximately 7-1/16, 9, 11 and 13-5/8 inches.

Additional configurations are available across a broader nominal bore range, with working-pressure options extending up to 20,000 psi for selected applications.

The available product range supports conventional drilling operations as well as projects requiring higher-pressure equipment.

For deep wells, high-pressure high-temperature applications and other demanding operating environments, equipment selection involves additional review of materials, pressure-containing components, seals, operating conditions and testing requirements.

Not every bore size and pressure rating is available in every combination.

Goldenman determines the applicable configuration using the specified bore, rated pressure, connection arrangement, ram functions and project requirements.

API 16A Requirements and Equipment Compatibility

API Specification 16A establishes requirements for drill-through equipment used in oil and gas drilling operations, including ram-type blowout preventers.

The specification addresses aspects of equipment design, materials, manufacturing, testing, inspection and product identification.

Goldenman's double ram BOP product range is manufactured according to applicable API Spec 16A requirements, with certification and inspection documentation provided according to the specified product configuration and purchase requirements.

For drilling contractors and equipment buyers, evaluating API requirements is an important part of supplier qualification.

However, a BOP must also be compatible with the other components of the well-control system.

This includes the wellhead connection, adjacent BOP stack components, hydraulic control unit, choke and kill equipment, and relevant pressure-control interfaces.

The wellbore pressure rating of a BOP should not be confused with the hydraulic operating pressure required to open or close its rams.

Similarly, ram compatibility must be checked against actual tubular dimensions and operating conditions.

A technically suitable BOP configuration is therefore defined by the complete well-control requirement rather than one equipment specification in isolation.

Ram Selection and Hydraulic Control Requirements

One of the most important decisions in double ram BOP procurement is the selection of upper and lower ram functions.

For drilling programs involving multiple tubular diameters, variable-bore rams may provide additional operating flexibility when their qualified sealing ranges match the required tubular sizes.

Where emergency shearing is required, the engineering review must consider the actual tubular outside diameter, wall thickness, steel grade, material strength, connection geometry and available hydraulic operating pressure.

A nominal statement that a shear ram can cut a specific pipe diameter is insufficient without considering these additional parameters.

The BOP control system must also provide the appropriate hydraulic functions, operating pressures and fluid volumes.
Locking arrangements may be manual or hydraulic according to the selected BOP design.

For replacement equipment, the existing hydraulic
interfaces, ram dimensions, connection configuration and available installation space must be considered.

Goldenman's published specifications for the Goldenman API 16A double ram BOP https://goldenman.com/products/api-16a-double-ram-bop/ provide buyers with an overview of available configurations and the technical information required for equipment selection.

Manufacturing, Pressure Testing and Quality Documentation

Blowout preventers operate as pressure-containing components within safety-critical drilling systems.

Manufacturing quality and inspection documentation are therefore important aspects of the procurement process.

Quality-control activities can include material verification, dimensional inspection, non-destructive examination, hydraulic function testing and pressure-integrity testing, as specified in the approved inspection plan.

For double ram BOPs, particular attention is given to pressure-containing components, ram cavities, sealing surfaces, connections, operating mechanisms and hydraulic interfaces.

Factory acceptance testing may include body pressure tests, ram sealing tests, hydraulic opening and closing operations, locking-system checks and documentation reviews.
The specific inspection and testing requirements depend on the applicable API specification, product configuration and contractual requirements.

Third-party inspection and witness testing can also be incorporated where required by the project.

Technical documentation is important for both equipment acceptance and future maintenance activities.

Manufacturers and buyers should establish the required inspection records and certification package before production and delivery.

Technical Information Required for a Double Ram BOP Quotation

To support accurate equipment selection, Goldenman recommends that buyers prepare a coordinated technical request covering the BOP configuration and its intended operating environment.

The main information includes:
•
BOP dimensions and pressure: Nominal bore, rated working pressure, upper and lower connections, and required ring-gasket specifications.

Ram configuration: Upper and lower ram types, tubular sealing sizes, variable-bore ranges, and any required blind or shear functions.

Hydraulic requirements: Available control pressure, opening and closing functions, operating volumes and locking arrangements.

Operating environment: Temperature requirements, drilling-fluid conditions, H2S or CO2 exposure, and applicable material specifications.

Inspection and delivery: Required API documentation, factory acceptance testing, third-party inspection, destination country and delivery requirements.

For replacement BOPs, existing equipment drawings, nameplate information, connection details and hydraulic interface specifications can support the technical review.

A complete request helps manufacturers identify the appropriate equipment configuration and prepare a more accurate technical and commercial proposal.

Supporting International Drilling and Well-Control Projects

With 20 years of industry experience and products exported to 96 countries, Goldenman supplies equipment for international oil and gas operations.

Its portfolio includes blowout preventers, well-control equipment, drill pipe, drilling tools, mud pumps, wellhead valves and associated drilling components.

The company also participates annually in oil and gas industry exhibitions in Beijing, Russia, Abu Dhabi and Nigeria, maintaining contact with international drilling contractors, equipment distributors and procurement professionals.

For projects requiring double ram blowout preventers, Goldenman supports technical specification reviews, equipment configuration selection, inspection documentation and international procurement arrangements.

About Goldenman Petroleum Equipment Co., Ltd.

Goldenman Petroleum Equipment Co., Ltd. is a Chinese oilfield equipment manufacturer and supplier headquartered in Dongying, Shandong Province.

The company has 20 years of operating history and exports products to 96 countries.

Its principal products include API 16A blowout preventers, API 16C well-control equipment, API 16D BOP control systems, API 6A wellhead equipment, API 5DP drill pipe, drilling tools, mud pumps and drilling rig components.

Media Contact

Goldenman Petroleum Equipment Co., Ltd.
Dongying, Shandong, China
Email: info@goldenman.com

491, 85 Dunstall Hill, Wolverhampton WV6 0SP, UK

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