Control Chokes
16Pages

Control Chokes The industry standard in flow control technology

Cameron control choke design incorporates hydrodynamic energy dissipation to reduce erosion problems while ensuring positive flow control. During service, the flow enters the choke inlet and circulates around the annulus between the body and the cage. The cage has an even distribution of ports that determine the maximum flow capacity. The high-velocity fluid streams produced by the flow collide in the center of the cage. Since the fluid streams impinge directly with each other, this enables the most erosive energy to be dissipated. This in turn minimizes the risk of erosion damage to...

Plug & Cage The plug & cage control choke uses the plug as the controlling element, and throttles the flow on the internal diameter of the ported cage. The ports in the cage are sized and arranged to give the most appropriate combination of controllability and flow capacity for each application. A major consideration when sizing the choke is the ability to achieve closely managed well startup while also optimizing capacity towards the end of well life to maximize production. The plug & cage design is highly optimized, and incorporates the largest possible flow area, making it ideal for...

External Sleeve The external sleeve control choke has a sleeve that throttles the flow on the external diameter of the ported cage. The external sleeve trim is particularly suited for lowcapacity/high pressure-drop applications. The external sleeve is designed specifically for severely erosive service where the combination of high pressure drops and high sand concentrations can reduce the life of a choke. Additional features include: ■■ Large visual indicator provides position in 1/64-in bean as standard. External grease port lubricates threads and bearings. Stem lock maintains set...

Multistage Trim A multistage choke trim is used in applications where high differential pressures result in unacceptably high noise and vibration levels, especially in gas service. Multistage trims also are commonly used to prevent cavitation in the case of liquids, particularly for water injection. The trim works by reducing the pressure over a number of discrete stages, giving a carefully managed pressure profile. Similarly, it manages the velocities within the trim, and prevents the occurrence of undesired flow effects such as sonic velocities and high velocity jetting. In addition to...

CC15 Control Choke Handle Position indicator CC15 choke with linear hydraulic actuation Bonnet nut Stem seal Body Plug/stem assembly Cage assembly CC15 choke plug & cage trim CC15 Choke Flow Curves CC15 control choke API 5K/10K, plug & cage

CC20 Control Choke Position indicator Locking screw Bonnet Bonnet nut Body Body bleed port CC20 choke with pneumatic diaphragm actuation Cage Plug/lower stem CC20 choke plug & cage trim CC20 control choke API 5K/10K, plug & cage CC20 Choke Flow Curves CC20 control choke API 5K/10K, external sleeve CC20HP HP/HT API 15K/20K, external sleeve

CC30 Control Choke Position Indicator Upper stem Bonnet gasket CC30 choke with linear hydraulic actuation Bonnet Plug/lower stem Body Cage assembly CC30 choke plug & cage trim CC30 control choke API 5K/10K/15K, plug & cage Bean size, 1/64 in CC30 Choke Flow Curves CC30 control choke API 5K, external sleeve CC30HP HP/HT control choke API 10K/15K, external sleeve

CC40 Control Choke Jam nuts/ limit stop Stem drive bushing Stem seal Bonnet studs/nut Bonnet CC40 choke with hydraulic stepping actuation Body Plug/lower stem Cage assembly CC40 choke plug & cage trim CC40 Choke Flow Curves CC40 choke API 5K/10K/15K, plug & cage CC40 choke API 5K, external sleeve CC40HP HP/HT choke API 10K/15K/20K, external sleeve

CC60 Control Choke Position indicator Handwheel Stem drive bushing Upper Stem CC60 choke with electric actuation Body Plug/lower stem Cage assembly CC60 choke plug & cage trim CC60 choke API 5K/10K, plug & cage, equal percent trim CC60 choke plug & cage, linear trim CC60 Choke Flow Curves

CC70 Control Choke Position indicator Stem seal Stem Bonnet Studs/Nut Body Plug assembly Cage assembly CC70 choke plug & cage trim CC70 Choke Flow Curves CC70 choke API 5K, plug & cage, linear trim Bean size, 1/64 in

Bonnet adaptor Stem Bonnet CC80 choke with electric actuation Body Plug Body bleed port Cage CC80 choke plug & cage trim CC80 choke API 5K, plug & cage, linear trim Bean size, 1/64 in CC80 Choke Flow Curves

High Temperature and High Pressure Anti-rotation ring Ring gasket CC20 external sleeve 15k choke with electric actuation Yoke hub Pressure-balanced seal Body Stem/sleeve assembly Seat/cage assembly CC20 external sleeve HPHT trim choke Our range of control chokes includes a series of models engineered specifically for use in high-pressure, high-temperature service in corrosive/erosive environments. The high-pressure, high-temperature designs utilize metal seals and non-elastomeric seals. These seals are tested and qualified to provide high performance and reliability in sour service, with...

Choke sizing program Selection of the correct trim size and type is vital to the successful and reliable operation of a choke. Cameron offers a computer-based choke sizing program to optimize choke sizing and selection for the customer. Based on flow and pressure requirements of the application, the program analyzes and specifies the optimum choke size and trim configuration. Features of the choke sizing program include: ■ Capability to size a large number of chokes and flow conditions ■ Modular sizing program structure that enables the addition of new choke and choke trim data updates as...

_AA, BB, DDf, EE12 CC2, FF HH2 Valve body/bonnet2 AISI 4130 AISI 410, Duplex SS UNS 31803, AISI 4130 with Ni-alloy clad Super Duplex SS UNS 32760, A182 F6NM SS Flange2 AISI 4130/ASTM A350 LF2 AISI 410, Duplex SS UNS 31803, AISI 4130 with Ni-alloy clad/ Super Duplex SS UNS 32760, A182 F6NM SS ASTM A350 LF2 with Ni-alloy clad Stem (wetted)17-4 pH SS17-4 pH SS718 Ni-alloy Bolting5ASTM 320 L7MASTM 320 L7MASTM 320 L7M Slip-fit gasketPTFEPTFEPTFE Bonnet gasket 316 SS 316 SS 825 Ni-alloy Junk ring 316 SS 316 SS 825 Ni-alloy Retaining ring Ni-alloy, X-750 Ni-alloy, X-750 Ni-alloy, X-750 Material...