Dec 25

Producing oil and natural gas wells occasionally requires major repairs or modifications, called “workovers.” Workover services are carried out with the same type of rig used to perform maintenance services, although the rig often is outfitted with specialized equipment including rotary drilling equipment, mud pumps, mud tanks and blowout preventers. A workover may last anywhere from a few days to several weeks to accomplish.

workover rig mud tank

workover rig mud tank

Many oil wells rely on artificial lift methods to make the oil surface. Oil can be lifted by different techniques , which require specialized equipment operating under dificult conditions for long periods of times. These equipments are assigned to the wells as long as their use is economically rentable. Failures of these equipments over the time require maintenance services such as cleaning, reinstatement, stimulation and others, which are essential to the exploitation of the wells. These services are performed by workover rigs.

GN solids control provides related solids control equipments and consultant service for workover rig operation. The most common workover model clients may require is XJ550HP, 450HP, 350HP, 650HP. GN solids control owns standard design of solids control equipments for these workover rig models.

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Dec 16

Top 550HP workover rig manufacturers in the world

1 New Oil Rigs based in international market

They fabricate and manufacture custom oil and gas rigs for vertical and horizontal well drilling and oilfield work over service.  We have experience in customizing rigs for both desert and arctic service.  Rigs are from 450 to 3000hp and include carrier based, self-elevating, and box-on-box rigs.

550HP workover rig mud tank system

550HP workover rig mud tank system

2 XQ PACIFIC GROUP CORPORATION

XQ Pacific Group Corporation is incorporated in Ontario province Canada by Canadian law on Jan 17, 2005. It is an integrated service group. Workover rig Products including Heavy-duty workover rig, special environment workover rig, Light-duty onshore workover rig, slant-well workover rig, except these, they also have onshore& offshore drilling rig, etc.

3 GN solids control design and manufacture mud tank system for workover rig and oil & gas drilling rig. We have a standard 550HP workover rig mud tank system, but we can make some changes according to client’s using habit and special requirement.

GN 550HP workover rig mud tank system including:

2 ea GNZS703 shale shaker

1 ea GNZJ703 mud cleaner

1ea GLW355x1250N decanter centrifuge for option

15HP mud agitator

Mechanical seal centrifugal pump

Container suitable mud tank for easy transportation

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Mar 04

Repairing an oil well sometimes requires a workover. It is commonly called by several names such as completion rig, workover rig, or pulling unit.

 Function of workover rig 

workover rig equipments and material

workover rig equipments and material

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. Through-tubing workover operations, using coiled tubing, snubbing or slickline equipment, are routinely conducted to complete treatments or well service activities that avoid a full workover where the tubing is removed. This operation saves considerable time and expense.

 Companies that supply this type of equipment are Key Energy Services, Pool Workover Services, and Basic Well Services.

 Of all the problems that can occur during production, three stand out the most: equipment failure, wellbore problems, and saltwater disposal.

 WELLBORE PROBLEMS

 Sanding, formation damage, paraffin accumulation, oil-water emulsions, and corrosion are common wellbore problems.

 GN workover rig solids control system is mainly used for sanding problem. The system can separate large particles sand from the drilling fluids so the drilling mud can be recycled for drilling and “kill”the well. The working principle is to clean the drilling mud by 4 phase cleaning, they are shale shaker, desander, desilter, decanter centrifuge. But usually for workover operation, sometimes you can use a shale shaker and centrifuge only, because the sand size is not so large, but it needs to separate finer particles than oil& gas drilling.

 Sanding Problem

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