Jan. 06, 2025
Wireline is a flexible metal cable used for various well completion and intervention operations such as fishing, conveyance of downhole tools, and logging.
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Speed ' wireline is often used instead of coiled tubing or service rigs because the run in hole and out of hole speeds are quicker with wireline. In addition, rig in and rig out times are also shorter for wireline units.
Lower cost ' wireline is usually cheaper than coiled tubing or service rigs because less equipment and people are required for the job.
Small footprint on location ' since less equipment is required to perform wireline jobs, it takes less space on location.
Related: 18 Most Common Coiled Tubing Applications
Related: What is Coiled Tubing?
Setting/retrieving plugs ' pump downs with the wireline are very common during the plug and perf operations.
>Fishing ' retrieving various pieces of equipment left downhole.
Running perf guns ' creating holes in the casing so that hydrocarbons can flow from the formation into the wellbore.
Liquid or fill tags ' performed to determine the fluid levels in the well or the depth of obstruction.
Logging ' the vast majority of the wireline operations are logging jobs and may include running gamma, nuclear, sonic, resistivity, and other logs.
Gamma tools are used to find information about the near-wellbore formation by measuring naturally occurring radiation in the rocks.
Nuclear tools emit radiation and then record how the near-wellbore formation reacts to it.
Nuclear logs are most commonly used to find out the porosity of the formation and rock density.
Resistivity logs are used to distinguish between the hydrocarbons and water in the formation.
Cement bond logs (CBL) ' are used to measure the cement integrity between the casing and the formation.
Chemical cutting ' wireline can be used to help retrieve stuck tubing in the well ( ex. coiled tubing) by performing a chemical cut.
The chemical reaction is initiated at the stuck point either by sending an electrical signal or by activating it mechanically.
Related: What is Mud Logging?
Slickline ' single solid non-electrical metal cable used for the operations that don't require a lot of tensile force.
Braided line ' a stronger line made of multiple strands of wire and used for fishing and plug retrieval.
Single or multi-conductor ' has electric cable inside that can be used to send or receive signals from the downhole tools. Used for running different logging tools. Usually covered with armor wire to prevent damage to the conductor during the operations.
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Wireline unit ' comes in different configurations depending on the job type and the well location.
The main purpose of the unit is to provide pulling power to move the wireline in and out of the hole.
The unit has depth and weight counters. Usually, a special wheel is used to keep track of the wireline depth.
Hoisting mechanism or crane ' used for lifting wireline equipment.
Powerpack ' used to provide power for the operation. Can be powered by diesel or electricity.
Sheaves ' used to guide wireline into the wellbore.
Stuffing box ' the tool with special seals used for pressure control on slickline operations. It allows wireline to be run into the well while preventing the well fluids from escaping.
For braided line operations, a grease injection control head is used instead of the stuffing box.
A grease is injected to create a seal around the braided line.
Blow out preventer (BOP) ' used for pressure control in case something unexpected happens during the operation and to prevent blowouts.
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The type of BOP used will depend on the well pressure.
Lubricators (riser) ' used as a barrier to contain downhole tools (similarly to lubricators on coiled tubing units).
The length of the lubricator will depend on the length of the tool and the fish when fishing.
Related: How Do Blowout Preventers Work?
The wireline tool string components will depend on the job type but here are the basics:
Knuckle joint ' used to give more flexibility to the longer wireline tools during the jobs on highly deviated wells.
Mechanical jars ' provide extra tensile force.
Stem (weight bar) ' used to add extra weight to the tool string to help it overcome well pressure and friction.
Rope socket ' used for attaching wireline to the tool string. In some applications, it is also called the cable head. It can also act as a disconnect when the tool gets stuck in the well.
Wireline tool ' the tool required for a specific job.
Gulfwell provides a range of Wireline Pressure Control Equipment. Gulfwell's equipment has various unique features to make it ideal for wellbore operation. Some of them are
Reliability ' Designed to withstand high pressure and temperature conditions inside the wellbore without malfunctioning or failing. They are made of high-quality materials that can resist wear and tear.
Efficiency ' Easy to operate and maintain, with minimal downtime.
Versatility ' Compatible with a wide range of wireline tools, and is adaptable to different types of wellbores, including vertical, directional, and horizontal wells.
Durability ' Built to withstand harsh environmental conditions, like extreme temperatures, corrosive substances, and high pressures
Cost-Effective ' Comes with a reasonable purchase price and low ongoing maintenance costs. It also has a long lifespan to provide good value for money over the long term.
Gulfwell's ACT Lubricator Risers are used to allow the wireline tool string to be raised above the wellhead valve prior to and after wireline operations and enable the wellhead valve to be opened and closed allowing entry and exit of the toolstring from the wellbore. These are made of high-quality materials to withstand high temperatures, high pressure, and corrosive fluid. These risers can easily work at a pressure range of 15,000 PSI.
An O-ring on the pin section forms the seal when made up into the box. The collar has internal ACME threads to match the external threads on the box. The connection can be made up by hand.
ACT Lubricator Risers are available in standard lengths from 4 feet through 12 feet, and 2-1/2' through 6.38' bores. Standard end connections include a union box up and a union pin and collar (nut) down. Bleed off valves are also available in all models upon request.
ACT also supplies Light Weight Lubricator Risers in low alloy steel and 28 chrome stainless steel.
Union Cross Over Adapters are utilized to provide a transition between otherwise incompatible unions made by the same or different manufacturers. These adapters are designed with a Union Box Up and Union Pin & Collar Down and are always rated, both in terms of service and pressure. Any combination of end connections are available.
Floor Block (Hay Pulley) is used to bring the wireline down to a position where it is horizontal from the lubricator tree to the wireline rig. It also shifts the point of wireline pull from the top of lubricator to the base of the lubricator tree and reduces side loading of the lubricator. Pulleys are available in aluminium or composite material for lighter weight.
A Wireline Clamp is used to clamp the wireline while raising and lowering the lubricator and during fishing operations.
A Wellhead Connection is
used to connect the bottom of the wireline valve to the top tree connections. The top of the connection fits the bottom of valve and the bottom thread of connection is threaded to screw into the particular threads on top of the tree flange connections.
A Telescopic Gin Pole is used to raise the lubricator to the top of the wireline valve and maintain this position while breaking off or making up wireline tool string.
A Load Binder and Chain are used to bind the gin pole to the tree and to the wireline valve.
Rope Blocks are used to raise and lower the lubricator.
A Lubricator Pick-Up Clamp is used to hook the rope block to pick up the lubricator.
Pump ' In ' Subs and Plug Valves are used to pressurize the lubricator during hydrostatic testing or pumping in to the well bore when that becomes necessary during the course of servicing operations. Models with a working pressure above 5,000 PSI are equipped with specially designed side ports and accept plug valves with integral unions. Plug Valves are available separately and as a component of Pump-in-Subs. Fitted with a variety of Top and Bottom Connections, ' Quick Union connections being most common, ' these assemblies are available from 2.50 ID. inch through 6.38' ID. with WP from 3,000 PSI through 15,000 PSI.
Gulfwell's ACT Blowout Preventors are designed to prevent the uncontrolled release of oil and gas during wireline operations. It works by applying constant pressure on the wellhead, allowing operators to safely control the flow of oil and gas from the well.
Gulfwell's Blowout preventors are available in two types hydraulically operated and manually operated, with configurations as desired. Hydraulically operated BOP consists of large, heavy-duty valves that are connected to the wellhead and operate hydraulically using either high-pressure fluid or electric signals. The valves are designed to close quickly when pressure within the well reaches an unsafe level, thus preventing any further flow of hydrocarbons from the well. Manually operated BOP is designed to be operated manually by personnel on the well site, and can be used to shut off the flow of fluid in an emergency situation.
Gulfwell's Blow Out Preventers are available in light weight and compact models.
Gulfwell blowout preventors are available in sizes ranging from 2-1/2' ID through 6- 3/8' ID and 3,000 PSI through 15,000 PSI working pressures. Contact the Gulfwell representative for details on pumps, fittings, hoses and other accessories.
ACT Quick Test Sub is designed to save rig time while pressure testing a lubricator rig up, before exposing it to well pressure. When multiple wireline runs are required, the lubricator has to be tested each time the bottom connection is broken, and much time can be lost. After performing the first pressure testing of the whole string, subsequent pressure test can be made using the Quick Test Sub to verify the integrity of the joint disconnected, rather than testing the whole lubricator assembly. This is done by connecting a small hand pump to the Quick Test Sub and testing the two O-Rings seals from outside.
The Quick Test Sub s installed either above or below the BOP and becomes the joint that is disconnected each time to insert and retrieve tools from the well.
Features: The Spooling Unit is designed with the ultimate flexibility, for a stand alone operation & with transportable weight.
Dimension & Weight: Length = 2.00 m (6.56 FT)
Width = 1.50 m (4.92 FT) Height = 1.59 m (5.24 FT)
General: The spooling unit is constructed with steel tubing.
The unit has four lifting points for crane handling, integral forklift pockets for ground handling & four anchoring points for floor fixing. This spooling unit is used for drawing old wireline from a wireline unit drum and for spooling new wireline on the wireline unit drum under tension.
Operation of the spooler is done by hydraulic source from open-loop hydraulic power pack. The unit has a hydraulically driven arbour on which the new drum (shipping drum) is placed. The unit is supplied with wire tensioning device.
The hydraulically driven spooler arbour will accept all standard wire shipping drums from small slickline 0.092' to large 0.125' wire drums upto 40' diameter. Hydraulic tension during spooling is controlled from a control panel mounted on the side of the unit.
Tensioning Unit (TRS ' 01): The wire tension assembly traverses freely on sealed linear bearing and tensioning is done by two brake bands acting on the circumference of the tensioning wheel. Braking is controlled by means of a hand wheel in front of the tensioning head.
A spring loaded pressure wheel is positioned at the top of the tensioner wheel to hold wire in place. A set of guide rollers are set in front of the head which function to keep the tensioner head in line with the wire.
Application: Slickline / Braided line
Operator Control Panel: The operator console is built with stainless steel machine engraved English letters coded and is equipped with:
Operator seat, safety glass, counter meter, three positions, four way directional control valve @ 3,000 PSI, hydraulic system pressure gauge 0-3,000 PSI, pressure relief valve @ 3,000 PSI & joystick for moving the tensioning wheel.
Third Party Inspection /Certification: Unit will be certified by third party BV, DNV, ABS, Lloyds, Vetco Tuboscope etc as per the requirement of the customer.
Painting: All steel materials are sandblasted to Sa 2 ½ standard, inorganic zinc primer coated and all aluminum materials are primed, painted to customer supplied color code.
Signs & Decals: Wherever applicable signs & decals required will be placed. Unit daily checklist starting procedure
Safety instructions
All hydraulic connections will be tagged with proper identification SWL of the unit
Documentation: Operations & the maintenance manuals are provided in a hard copy and a soft copy (in CD format) in English.
Features: The Hydraulic Gin Pole is designed with the ultimate flexibility for performing wireline operations, stand alone & with transportable weight especially for offshore applications. The Gin Pole is supplied with a transportable container which has four lifting pad eyes and integral forklift pockets for ground handling.
General: The complete system consists of: A hydraulic cylinder connected with two hose pipes to its control console, which will be connected to the power pack available on platform. The cylinder is a double acting type equipped with a check valve so that in the event hose pipe breaks while erecting the gin pole, the cylinder will not come down, it will stop at the same position so as to avoid any possibility of accident.
The control console of the cylinder consists of a pressure control valve, a manually operated direction control valve, a flow control valve, a pressure gauge, all required fittings and standard accessories. A heavy duty portable telescopic gin pole complete with steps, chain block, chain, ratchet type binder, guy lines and other accessories.
Length adequate to support 40 feet of 3' I.D. X 5,000 PSI lubricator.
Operation: The gin pole is hydraulically erected
Operator Control Console: The operator console is built with a stainless steel machine engraved hydraulic circuit diagram and is equipped with:
A three positions directional control valve @ 3,000 PSI A flow control valve for speed adjustment
A pressure relief valve @ 3,000 PSI
A hydraulic system pressure gauge 0-3,000 PSI
Hydraulic: Operation of the gin pole can be done from a standard open-loop hydraulic power pack. A power pack is not included.
Painting: All steel materials are sandblasted to Sa 2 ½ standard and coated using an inorganic zinc primer, then painted to customer's supplied color code.
Documentation: Operations & the maintenance manuals are provided in a hard copy and a soft copy (in CD format) in English.
Grease Injection Control Head is required to obtain a seal when using braided cable.
Principle of Operation: Grease is injected at a pressure higher than the well pressure (approximately 20% higher). The grease fills the interstitial grooves between the braided line strands. The most critical components of the grease injection head are the 'flow tubes'. These should be approximately 0.010' ID larger than the measured outside diameter of the line. A seal is effected by pumping grease at slightly above the well pressure. This action causes pressure drop to occur across each tube. The pack off at the top is closed fully in order to gain control of the pressure before running the cable.
The following equipment is required to operate the grease injection system
Ancillary Equipment:
Use :
The following factors will effect the volume of grease required :
Description: Grease & Hydraulic Control Unit Module is designed to operate pressure control equipment up to 10,000 PSI working pressure. They can operate BOPs, tool catcher, tool trap, stuffing box and line wiper.
General: An air driven hydraulic pump is used to power all hydraulic functions. Back-up hand pumps are provided for the event of an air/hydraulic pump failure. The back-up hand pump has a maximum working pressure of 3,000 PSI. The units also have two independent grease injection circuits to supply grease to BOPs and the grease head.
These have a crossover valve allowing one pump to drive either grease injection line. All hoses are mounted on spring loaded reels & hence there is no need for manual operation to wind hoses on the reels.
A panel is designed to layout the controls on a picture format so that the operator can more easily visualize the state of the equipment. The module is equipped with a Haskel AW25 air operated hydraulic pump for the BOPs, tool trap, tool catcher, line wiper and stuffing box. This pump can produce a fluid pressure of 2,500 psi with 100 PSI air.One accumulator with a capacity of 9.1 liters is fitted as a back-up for air powered pump. They are normally pre- charged to 1,500 PSI nitrogen. Two hydraulic hand pumps are provided. The back-up hand pump has a maximum working pressure of 3,000 PSI while the grease ARO 100:1 pump is rated to 10,000 PSI.
Dimensions & Weight: Length: 1.45 m Height: 1.55 m Width: 0.79 m
Capacity of pump first grease tank: 187 liters Capacity of pump second grease tank: 187 liters Capacity of hydraulic oil tank: 20 liters Approx. weight: 750 kgs.
Third Party Inspection /Certification: Unit will be certified by third party BV, DNV, ABS, Lloyds, Vetco Tuboscope, etc. as per the requirements of the customer.
Painting: All steel materials are sandblasted to Sa 2 ½ standard and coated using an inorganic zinc primer. All aluminum materials are primed and painted to customer's supplied color code.
Documentation: Operations & the maintenance manuals are provided in a hard copy and a soft copy (in CD format) in English.
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