custody transfer static mixer

Custody Transfer (CT) Static Mixer for Oil and Gas

One of the biggest problems with Custody Transfer is the ability to distribute the water and bottom sediments across the crude oil pipeline for accurate crude oil sampling and crude oil metering. Water, being heavier than and immiscible with oil, tends to flow on the bottom of the pipeline, where oil will flow above the water. The Komax Custody Transfer Static Mixer solves this problem by using the Komax Triple Action Static Mixing Elements configured for a Custody Transfer (CT) arrangement. By ensuring the water and oil are homogeneous and dispersed, the automatic sampler or manual sample probe will be able to take an accurate grab sample from the line and know how much water is in the line to provide an accurate and cost efficient reading. If the water and bottom sediment is not homogenous across the cross section, a sample could reflect pure oil, when really there would be some percentage of water in the line, leading to financial losses. It is recommended that the sample port be located between 2 – 4 pipe diameters downstream of the mixer for best sampling or metering results.
The Komax Custody Transfer Static Mixer is designed to comply with sampling/metering standards API MPMS 8.2 and ISO 3171 and can be built per ASME B31.3, B31.4, Section VIII Div 1, or PED 2014/68/EU.

Category:

Industries

  • Oil & Gas

TYPICAL APPLICATIONS

  • Water & Bottom Sediment
  • Crude Oil
  • Naptha
  • Stabilized Condensate
  • Demulsifier
  • Bitumen
  • Chemical rich amine
  • Blending of Oil with Water and Bottom Sediments
  • Blending of Naptha with Water and Bottom Sediments
  • Combining of Bitumen with Water and Bottom Sediments
  • Blending of Butane with Water and Bottom Sediments
  • Blending of Ethane with Water and Bottom Sediments
  • Combining of Condensate with Water and Bottom Sediments
  • Blending of Emulsified Water and Oil With Demulsifier
  • Chemical Dosing into a Hydrocarbo Stream
  • Blending of Two Immiscible Products

End Connections & Available Custom Options

Weld Neck Flanges: The Custody Transfer Static Mixer as a standard, comes with a flange with an extended hub for easy welding (butt welding) to the pipe it is connected to. Weld neck flanges can come with two types of faces: Raised Face (RF) or Ring Type Joint (RTJ).

NPT Connections: The Custody Transfer Static Mixer can come with NPT ends rather than flanged connections if desired.
Weld Prep Ends: It can come with butt weld ends for weld in installations or installations where custom connections are needed.

Sampling Port: The Custody Transfer static mixer can come complete with a sampling port to connect a sample probe, densitometer, or viscosimeter. Sampling connections can be either flanged or with NPT connections, depending on customer specifications.

Materials & Sizing

Diameter: ¾” – 48″

Standard Metals: Standard materials include Carbon Steel (all grades), Stainless Steel (all grades), Low Temp Carbon Steel/SA 333 GRD 6, & Killed Carbon Steel but can also be fabricated in exotic alloys such as Hastelloy, Inconel, Monel, Titanium, etc.

Pipe Schedule: Pipe schedule is determined based on the customer specifications or design code specified. Komax assumes ASME B31.3 if no design code is specified.

Mixing Elements

Triple Action Mixing Elements –

Installed in a vertical or horizontal pipe, the Komax Custody Transfer Static Mixer configures its mixing elements at a 30 degree rotation from vertical centerline. This allows the first element to act as a scoop or ramp for the water to be forced into the middle of the pipeline, where the rest of the mixing elements will be able to increase turbulence and evenly distribute the water across the entire pipe cross-section.
The Komax Custody Transfer Static Mixer also employs a flow straightening vane downstream of the element assembly. The flow straightening vane removes any swirl and axial forces in the line that may remain after traveling through the mixer to ensure that the water and bottom sediments remain suspended and do not get thrown to the pipe wall via centripetal forces (also known as barber poling).

LEARN MORE

Custody Transfer Static Mixer Sizing Table:

2 Elements Overall Weight LBS
Line Size Overall Length 150# 300#
3/4″ 4 1/2″ 6 7
1″ 4 7/8 8 10
1 1/2″ 5 1/2″ 11 16
2″ 6″ 15 21
3″ 9″ 32 38
4″ 12″ 47 65
6″ 18″ 86 120
8″ 24″ 152 209
10″ 30″ 231 310
12″ 36″ 347 467
14″ 39″ 448 588
16″ 45″ 577 797
18″ 51″ 720 1158
20″ 57″ 883 1443
22″ 63″ 1085 1724
24″ 69″ 1282 2186
Plain Ends
Weld Prep Ends
Threaded Ends

Custody Transfer Static Mixer Sizing Table:

3 Elements Overall Weight LBS
Line Size Overall Length 150# 300#
3/4″ 4 1/2″ 6 8
1″ 5″ 7 10
1 1/2″ 7″ 11 17
2″ 9″ 16 22
3″ 13″ 35 41
4″ 17″ 54 71
6″ 26″ 102 136
8″ 34″ 185 241
10″ 42″ 285 363
12″ 51″ 428 548
14″ 56″ 550 690
16″ 64″ 707 927
18″ 73″ 910 1389
20″ 81″ 1116 1726
22″ 89″ 1381 2068
24″ 98″ 1620 2634
2 Elements with Sample Port Overall Weight LBS
Overall Length
Line Size L1 L2 L3 for 150# L3 for 300# 150# 300#
3″ 25″ 7 1/4″ 5 3/4″ 6″ 43 49
4″ 29″ 8″ 6 1/4″ 6 1/2″ 59 76
6″ 39″ 8 5/8″ 7 5/16″ 7 9/16″ 103 137
8″ 48″ 9 1/4″ 8 5/16″ 8 9/16″ 176 232
10″ 57″ 10″ 9 3/8″ 9 5/8″ 283 361
12″ 67″ 10 1/8″ 10 3/8″ 10 5/8″ 416 536
14″ 73″ 10 1/2″ 11″ 11 1/2″ 537 677
16″ 82″ 11″ 12″ 12 1/4″ 683 903
18″ 92″ 11 1/4″ 13″ 13 1/4″ 845 1321
20″ 101″ 11 1/2″ 14″ 14 1/4″ 1042 1650
24″ 119″ 12″ 16″ 16 1/4″ 1480 2475
3 Elements with Sample Port Overall Weight LBS
Overall Length
Line Size L1 L2 L3 for 150# L3 for 300# 150# 300#
3″ 29″ 7 1/4″ 5 3/4″ 6″ 44 72
4″ 34″ 8″ 6 1/4″ 6 1/2″ 59 106
6″ 47″ 8 5/8″ 7 5/16″ 7 9/16″ 103 188
8″ 58″ 9 1/4″ 8 5/16″ 8 9/16″ 176 308
10″ 69″ 10″ 9 3/8″ 9 5/8″ 283 516
12″ 82″ 10 1/8″ 10 3/8″ 10 5/8″ 416 670
14″ 90″ 10 1/2″ 11″ 11 1/2″ 537 827
16″ 101″ 11″ 12″ 12 1/4″ 683 1094
18″ 114″ 11 1/4″ 13″ 13 1/4″ 845 1384
20″ 125″ 11 1/2″ 14″ 14 1/4″ 1042 1702
24″ 148″ 12″ 16″ 16 1/4″ 1418 2427

Downloadable Information:

Custody Transfer

Custody Transfer Data

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