scope:

Coverage. This specification covers items of equipment utilized for pressure control systems required during the drilling and production life of a well. Specifically covered are the groups of equipment usually referred to as ring-joint flanges, ring-joint gaskets, drilling-through and flowline valves, multiple completion valves, flanged drilling through equipment, screwed wellhead equipment, flanged wellhead equipment, christmas tree equipment, flow control chokes, water sampling devices, and segmented flanges, which include the following:

Sect. 2 Ring-Joint Flanges

Type 6B: 2,- 8,- and 6,000 psi

Blind

Integral

Threaded

Welding Neck

Type 6BX: 5,-10,- and 15,000 psi

Blind (10,- and 15,000 psi only)

Integral

Welding Neck (10,- and 15,000 psi only)

Sect. 3 Ring-Joint Gasket

Type R, RX, and BX

Sect. 4 Valves, Drilling-Through and Flowline

Flanged and Screwed

Sect. 5 Valves, Multiple Completion

Flanged, flow-line, full-bore gate and plug

Sect. 6 Drilling-Through Control Equipment

Blowout Preventers

Fittings, Drilling-Through

Adapters or Spools, Drilling-Through

Sect. 7 Screwed Wellhead Equipment

Screwed Casing Heads

Screwed Tubing Heads

Sect. 8 Flanged Wellhead Equipment

Casing Heads

Tubing Heads

Crossover Flanges

Adapters

Sect. 9 Christmas Tree Equipment

Flow Fittings

Adapters

15,000 psi Test Connections

Sect. 10 Flow Control Chokes

Adjustable Chokes

Positive Chokes

Sect. 11 Automatic Shutoff Valves

Sect. 12 Water Sampling Devices

Sect. 13. Segmented Flanges

Many of the foregoing items of equipment have specific complementary internal dimensions to permit (1) drilling-through, (2) running and landing a smaller string of pipe as diagrammatically shown in Fig. 1.1, (3) running tools, instruments, etc., into the well bore via the tubing passage.

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