Well Intervention Equipment

• Wellhead: The foundational, structural surface component that mechanically supports and seals casing and production tubing strings. It manages access to the well annulus during drilling and completion. [
• Christmas Tree: A series of integrated valves, chokes, and pressure-monitoring adapters installed above the tubing head once the well is completed. Its purpose is to regulate and safely isolate production flow during operations.

API Specification 6A, titled “Specification for Wellhead and Christmas Tree Equipment,” is the primary industry standard published by the American Petroleum Institute (API) for the design, manufacturing, testing, and performance of wellhead and Christmas tree equipment for oil and gas drilling and production services.

• Scope: It defines requirements for materials, dimensions, testing, quality control, and marking for a wide range of equipment.
• Purpose: Its main goal is to ensure the safety, reliability, and interchangeability of equipment from different manufacturers.
• Application: It applies to equipment used for pressure containment and control in surface and subsea drilling and production operations.

CEEM FZE provides elite, fully engineered pressure-control packages built to thrive in harsh environments. By implementing strict Product Specification Levels (PSL 1 to PSL 4) and premium material configurations (AA to HH), CEEM FZE customizes every assembly to meet localized field pressures up to 20,000 PSI.

API 6A gate valves are engineered for critical surface pressure containment and high-velocity fluid management directly at the wellhead. Unlike standard API 6D pipeline valves, API 6A valves must endure severe fluctuating downhole pressures, high concentrations of abrasive solids (like frac sand), and corrosive media (H₂S, CO₂) with extreme performance validation ratings like PR2.

A wellhead system is a complex assembly of spools, valves, and fittings installed at the surface of a well. Its primary components are built up in stages as the well is drilled.

1. Casing Head (or Starter Head): This is the lowest part of the wellhead. It attaches to the surface casing string and supports the next casing string. It provides a means of sealing the annulus between casing strings.
2. Casing Spool(s): Installed on top of the casing head, these spools support and seal subsequent, smaller-diameter casing strings. A well may have multiple casing spools.
3. Tubing Head (or Tubing Spool): This is the final spool installed on the wellhead. It supports the production tubing string, seals the annulus between the tubing and the final casing string, and provides access to that annulus.
4. Christmas Tree: Installed on top of the tubing head, this is an assembly of valves, chokes, and fittings used to control the flow of fluids from the well during production.

PSLs define different levels of technical and quality requirements for equipment. They are chosen based on the service conditions and criticality of the well. There are four main PSLs:

• PSL 1: The baseline and lowest level. It covers basic quality and testing requirements suitable for general, low-pressure service.
• PSL 2: Has more stringent requirements than PSL 1. It includes additional quality control measures, such as traceable material properties and hydrostatic testing of each unit.
• PSL 3: Designed for high-pressure, critical service. Requirements are significantly higher than PSL 2, including:
  • More extensive Nondestructive Examination (NDE).
  • Mandatory hydrostatic testing of each unit with longer hold times.
  • More detailed material qualification and traceability.
• PSL 3G: Has all the requirements of PSL 3 plus an additional gas testing requirement. This is intended for equipment in high-pressure gas service where gas leaks are a major concern.

• DSA: Perfect when space constraints exist. DSAs allow cross-over bolting between two different nominal sizes or pressure classes (e.g., transitioning from a 5,000 PSI flange to a 10,000 PSI component) using independent tap-end studs.
• Spacer/Drilling Spools: Used when distance or clearance is required between blowout preventers (BOPs) or wellhead components, often featuring side outlets for choke and kill line hookups

Every CEEM FZE DSA, drilling spool, and adapter flange is forged from premium alloy steels and precisely machined to match standard API 6B and 6BX Ring Type Joint (RTJ) configurations. For high-corrosion wells, we offer specialized Alloy 625 internal overlays inside the ring grooves to permanently prevent leakage paths.

CEEM FZE Choke and Kill Manifolds are custom-engineered, skid-mounted, pre-tested arrays. We provide configurations from 2″ to 4″ lines with operating ranges up to 15,000 PSI, outfitted with heavy-duty manual or hydraulic-actuated chokes for precise remotely monitored throttling.

Also known as an accumulator system, a BOP Control Unit stores high-pressure hydraulic fluid to actuate critical drill-through equipment, including annular and ram blowout preventers. Operating under API Spec 16D standards, these units must provide safe, instant, and reliable closing pressure (typically within 30 seconds) to close off the wellbore during an unexpected influx or kick.

At CEEM FZE, safety is non-negotiable. Our BOP Control Units feature multi-pump redundancy (air and electric options), explosion-proof electrical enclosures, and ergonomic remote control panels (touchscreen or push-button) tailored for modern drilling rigs. Each system undergoes pressure testing to ensure emergency rapid response deployment in any terrain.