What is hydraulic workover?

Asked By: Martins Peninger | Last Updated: 4th June, 2020
Category: business and finance gasoline prices
4/5 (59 Views . 11 Votes)
Hydraulic workover (HWO) units are self-contained, portable, running and pulling systems that provide an economical means of performing routine well maintenance for land, inland waters and offshore installations. The function of the quick rig unit is to insert or remove pipe while the well is under pressure.

Click to see full answer


Simply so, what is a workover rig?

Workover rigs, also called completion rigs or pulling units, are specialized oil rigs set up for inserting or pulling pipe tubing in and out of wells. Workover crews are called when an oil well has been drilled, is undergoing repair or is being retired.

Subsequently, question is, what is well completion and workover? 2. n. [ Well Workover and Intervention] The process of performing major maintenance or remedial treatments on an oil or gas well. In many cases, workover implies the removal and replacement of the production tubing string after the well has been killed and a workover rig has been placed on location.

Accordingly, how dangerous is snubbing?

Snubbing Working Conditions Work in the oilfield industry, including in snubbing activities, can be hazardous and even dangerous. As of 2011, the oil and gas extraction industry had a fatality rate seven times higher than the rate for all other U.S. industries.

How does a snubbing unit work?

It involves running the BHA on a pipe string using a hydraulic workover rig. The first snubbing unit was primarily designed to work in well control situations to "snub" drill pipe and or casing into, or out of, a well bore when conventional well killing methods could not be used.

31 Related Question Answers Found

What is the difference between slickline and wireline?

While a slickline is a thin cable introduced into a well to deliver and retrieve tools downhole, a wireline is an electrical cable used to lower tools into and transmit data about the conditions of the wellbore. Usually consisting of braided cables, wirelines are used to perform wireline logging, as well.

What is a rig?

The definition of a rig is a tool, equipment or arrangement with a specific purpose. An example of a rig is a thin paintbrush to an artist. An example of a rig is a tractor-trailer that hauls good across country. An example of a rig is the arrangement of sails and masts on a ship.

How does a workover rig work?

Similar to a drilling rig, a workover rig is smaller and requires no mud pumping or pressure-control systems. A workover rig is used to retrieve the sucker rod string, pump or production tubing from the well or run wireline cleaning and repair equipment into the well.

What is wireline work?

Wireline jobs are occupations at oil and gas sites in which you rig cable to drop into a well in order to lower equipment and repair materials. Wireline cabling is also used to aid in pipe recovery duties, well intervention, and evaluation tasks.

What is a recompletion well?


Well recompletion is conversion of a well to oil, gas and other subsurface resources production from certain zones (formations, horizons) to others.

What are the different types of drilling rigs?

The various types of offshore rigs include barges, submersibles, platforms, jackups, and floaters (the latter of which include semisubmersibles and drill ships).
  • Barges. A barge rig is designed to work in shallow water (less than 20 ft6.096 m.
  • Submersibles.
  • Platforms.
  • Jackups.
  • Floaters.
  • Semisubmersibles.
  • Drill ships.

Is a Floorhand a roughneck?

Floorhand (Roughneck) The Floorhand is responsible for pipe handling, casing and drilling equipment on the drill floor as well as carrying out maintenance on the equipment.

What is coil tubing used for?

In the oil and gas industries, coiled tubing refers to a very long metal pipe, normally 1 to 3.25 in (25 to 83 mm) in diameter which is supplied spooled on a large reel. It is used for interventions in oil and gas wells and sometimes as production tubing in depleted gas wells.

How do you react when someone snubs you?

Even if this is one in a long series of snubs, avoid an angry reaction. Instead, try to keep your cool and react with good spirits. If you decide to address the behavior in depth, do so when you're calm. Snubbing can make you feel negative about yourself, so try to work on your own sense of self worth.

How dangerous is oil rigging?


Fire. One of the major hazards to workers employed on oil rigs is fire. Petroleum is highly flammable, as are several chemicals regularly used in onshore drilling, including hydrogen sulfide. A well can also build up too much pressure, which may lead to an explosion if it is not corrected in time.

What does snubbing someone mean?

verb (used with object), snubbed, snub·bing.
to treat with disdain or contempt, especially by ignoring. to check or reject with a sharp rebuke or remark.

How dangerous is being a roughneck?

The risk of injury is all around, making these jobs some of the most dangerous ones in the world. It's easy to take for granted the risks that workers take every day. More than 1,100 oil and gas workers died in work-related accidents between 2003 and 2013. That's more than one hundred fatalities per year on average.

What is a pulling unit?

A pulling unit is one of the mechanical oilfield applications used to remove the casing and other tubing apparatuses inside a well bar. It is also used to remove drilling rods inside a wellbore.

What does snubbing mean in Sims 3?

Snubbing is a social action in The Sims 3: Generations. The Sim that is being snubbed will get the "Being Ignored" negative moodlet when they are near the teen who snubbed them. "Start snubbing (name)" is a common wish when a teen is having a mood swing.

What are the two main types of drill bits?


There are two main types of drilling bits: Roller cone bits, fixed cutter bit. I- Roller Cone Drilling Bits: They are also called tri-cone bits.

How do you kill a well?

Well kills during drilling operations
Allowing formation fluid to enter into the well-bore. This influx of formation fluid is called kick and then it becomes necessary to kill the well. This is done by pumping kill mud down the drill pipe, where it circulates out the bottom and into the well bore.

What steps should you follow to prepare a well for completion?

Well completion incorporates the steps taken to transform a drilled well into a producing one. These steps include casing, cementing, perforating, gravel packing and installing a production tree. The first step in completing a well is to case the hole.