WORKOVER UNITADVANCED HYDRAULIC

CEEM as a recognized supplier of oilfield equipment has become a solution provider

to the oil exploration and production sector. CEEM has routinely implemented

improvements to equipment designs and provided operational solutions with

specially designed equipment.

CEEM has participated in the refurbishment and enhancement of equipment owned

by all of the Major HWU suppliers. In doing so it has developed a strong sense of

market requirement and has a wealth of knowledge related to HWU services and

commercial requirements.

CEEM has now assembled a package consisting of all the advancements made to

the hydraulic work-over units as well as bundling of all of the support equipment

that has brought success to many projects.

An Introduction to CEEM’s AHWU

460K AHWU

The CEEM 460K AHWU is designed to be rigged up as a stand-alone unit, and to

be used for the work over of existing wells Offshore and Land based. The rig is

designed to complete all work-over functions completed by a conventional rig with

the additional capability of working with pressure in snubbing and underbalanced

situations.

The CEEM 460K AHWU containerized rig standard package consists of:

Hydraulic jack

Main work basket

Main control panel

Main winch panel

Tong panel

Counterbalance panel

Basket riser workover (two meter height)

Basket riser drilling (three meter height)

Telescopic derrick

Counterbalance winches (two units typical)

Main winch (15 ton)

Rotary table

Tong delivery

Work window (three meter inside height)

Adjustable work windown plate (within jack frame)

Lower basket

Mid level basketWork window basket

The CEEM 460K AHWU has the following advantages compared to a conventional rig:

No drill line required (no slipping or cutting drill).

Function of mast for lifting single joints of pipe and bottom hole assemblies

Individual component weights can be reduced to 8 tons

Low center of gravity.

Unexpected pipe movement maximum 10 feet

Can accommodate any bop stack configuration.

Under-balanced operations and snubbing operations integrated

Small operational footprint

Noise reduced to minimum.

The CEEM 460K AHWU has the following advantages compared to a conventional HWU:

Simplified rig up

All parts of the rig are compatible as they have been designed to work in a

system

All components are sized to fit in standard shipping containers

All spares and consumables have custom storage to protect the asset until it is

required

15 ton main winch for deploying and recovering bottom hole assemblies

Individual component weights can be reduced to 8 tons

Rig components have been simplified in order to utilize less experienced

personnel

Equipment has been built with common components used in other standard

equipment allowing for purchase from common vendors world wide

Equipment has been built to withstand in field abuse and neglect and require

only the most basic maintenance of lubrication and service

Modular Design

The CEEM 460K AHWU containerized rig achieves its most fundamental profit

enhancement by being modular with all components containers sized.

All components within container dimension

All components can be disassembled to achieve a maximum per piece weight

of 8 tons

All materials have designated storage or shipping frames within the package to

protect them

All components have API lifting eyes for loading, unloading and assembly

Environmental Conditions

The rig is constructed for the following environmental conditions.

Minimum water temperature : N/A

Maximum water temperature : N/A

Ambient extreme maximum : +50º C

Design temperature. min. (class) : -20º C

Atmosphere : Salty & corrosive

Maximum relative humidity : 100%

T

Design Loads

he CEEM 460K AHWU containerized rig is designed to meet expected operational

loads and comply with applicable API guidelines. All steel structures are modeled

and verified by FEA prior to build. After construction materials are proof loaded as

required and NDT is completed

Design Features

All components are able to be shipped inside of shipping containers

Jack HUSCO valve mounted on milled flat bracket to ensure zero tension on housing

that may cause spool sticking

HUSCO valve piping connected by way of fully machined manifold block to

prevent any tension on HUSCO valve body

Hydraulic piping is 2.5 inch through the tee and then reduces to 2 inch to the

cylinders allowing for maximum flow

CEEM designed swivel flanges on hydraulic piping allowing for zero stress

connection with perfect flange alignment

Valves for two leg four leg selection are full port 2.5 inch flanged connection

Hydraulic piping from barrel end of cylinder is routed on backside of post

allowing for maximum work space in window area

Threaded connection on the piping are joined by flanged connection making for

quick repair in the event a threaded connection becomes damaged

Hydraulic cylinders are manufactured with full opening flange on rod end

allowing for rod and piston to be removed through the opening. This allows rod

and piston service with pipe in the hole and no requirement to rig down

Jack is assembled with four posts that form the structure of the jack, cylinders

are not stresses by forces other than the movement of tubulars

Jack cylinders can be removed from jack through the top of the jack frame. This

can be done with pipe in the hole and no requirement to rig down

Jack work window Jack work window is formed by the main posts of the jack and has line bored

holes at 300mm intervals bored on each post

Jack work window plate can travel the full length of the jack structure allowing

the slips to be positioned at any height

Jack work window through manipulation of slip position can be utilized to create

an effective stroke of 20 feet for the removal / installation of long tool assemblies

Jack work window plate can be positioned near the top of the frame allowing

banding of cable to completed below the slip bowls

Main workbasket Folding design allows for transport and storage inside a standard shipping

container

Flat finished floor with zero projections above the grating

All floor gratings are hot dipped galvanized

All floor gratings are removable for repair and replacement by threaded fasteners

All main run hydraulic hoses are located within the floor structure and are covered

by stainless steel bulkhead plates complete with stainless steel fasteners

All panels are mounted in the basket by threaded fasteners and are left in

position during normal shipping (folded basket)

Connected to basket riser by way of three inch acme threaded fasteners

Control panels All panels are constructed of 316 stainless steel

All control levers are profile cut 316 stainless steel

All knobs and dials are machines 316 stainless steel

All fasteners are stainless steel

Control panel lever locks have been designed to operate in both working

positions and neutral position

Control panel lever lock pins are connected to the panel by stainless steel

1000kg test braided line

Control panel lever locks have convenient storage hole adjacent to the lever

assembly they are used with

Derrick Crown assembly is bolted construction

allowing easy assembly / disassembly for

inspection and service intervals in the field

Crown assembly is mounted on a hinge pin

allowing the crown assembly to tip up so

the derrick can sit on the ground or work

deck directly requiring no special stands

Derrick has rollers built in to the base and

tip so that it can be tailed in/out easily

during rig up/down as well as for rolling in/

out of containers for storage and shipping

Derrick rigs in from the horizontal

requiring a lower sling lift height than the

workbasket for placement

Derrick is pinned in the extended position

by way of spring over hydraulic locks

Cylinders are double rod design with

internal rod pushing a 75mm 4130 pin that

locks the travel of the derrick extension

Exterior rod shows to workers as a visual

indication of lock position, rod flush to outside

of cylinder barrel end lock is engaged, rod

showing lock is in the open position

Counterbalance winch Winches are mounted over/under allowing

both winch drums to run centerline

and cable is spooled evenly across the

centerline of the drum

Main winch Winch is strung as two line utilizing die formed cable to reduce overall cable size

Winch block is designed to have 20 percent greater weight than cable on back

side when block at crown to provide no load travel down from crown

Winch block is slim line to allow for minimum distance between counterbalance

winches and provide all three winches with near to center hole operation

Jack plate guide Jack plate is guided on rails to dampen torque pulsations from rotary table

Guide in drilling riser is full stroke

Guide in work over riser is half stroke

Guide is utilized on derrick deployment

Rotary table hose guide Rotary supply, return and case drain hoses are protected from snagging during

continuous rotating and jacking operations

Hoses are kept out of the way of workers and do not block entry or exit to the

work floor

Break/make cylinders Located on bottom side of basket

Left Side / Right side

Used for operating manual tongs in work basket

Hydraulic hose connectionHydraulic hoses at work basket level are connected with special pipe ends with

integral lifting eye