workover rig diagram brands

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We provide workover rigs/completion rigs from well-known and respected manufacturers including Corsair, BW Hyduke, Cooper, Load Craft and Service King. Please see our inventory below:

NESR’s fleet of rigs range from 200 HP to 1,500 HP and offer drilling capabilities for all type of wells with depths up to 4000m. Our fleet includes 750 HP truck mounted, fast moving rigs which are ideal for both light and heavy work over campaigns as both rigs are equipped with full edge mud system that can handle normal drilling activities.

We continuously update our modern fleet of land drilling rigs through investment and application of the latest technology. Our rigs are equipped with the most advanced equipment available and this combined with our experienced drilling team makes NESR the best choice for drilling and work over projects.

Considering the number of Workover Rigs off contract and stacked it is now highly important that contractors have their equipment in ready to go on contract condition. Major oil companies and operating companies will require a history of  good Rig Maintenance.

This Workover Rig Maintenance program consist of a complete maintenance schedule for all the equipment listed below. Any item listed on any of the check list worksheets can be changed and edited to suite any Workover Rig and any piece of equipment. It also covers Diesel Haulers and Water Haulers if you own your own trucks. Any item can be removed or changed to suite your Workover Rig and equipment.

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Well Service | Workover Rigs - 844/80 Double drum draw works. looks to be recently rebuilt. Has new Lebus Grooving on Tubing Drum. Comes w/ 250 HP 2 speed jackshaft/RA BOX. More Info

Well Service | Workover Rigs - CARDWELL KB200B Freestanding Oilfield Workover Rig / Service Rig / Pulling Unit, Service Rigs, Used Cardwell KB200B Freestanding Service Rig, 5 Axle Carrier, Detroit 8V71... More Info

Well Service | Workover Rigs - WELL SERVICE RIG - COOPER 350 Well Service Unit p/b DETROIT 8V-92 Diesel Eng, ALLISON 750 Trans, 42X12-38x8 DRAWWORKS w/dual disc assist, 97’ 200,000# Telescoping M... More Info

Well Service | Workover Rigs - CROWN 350 SERIES -- SERVICE KING 104" 205,000# DERRICK, CAT3406, ALLISON 5860,38X10 DOUBLE DRUM DRAWWORKS, CROWN SHEAVES REBUILT 2013 MAIN26”X4,SANDLINE 22”, NE... More Info

Well Service | Workover Rigs - 2008 Crown/Cabot 1058 Service unit mounted on 4 axle carrier w/Detroit 60 Power. New 5860 Drop Transmission. 72" Double rod/single tubing Derrickmast 125000# Rig is in Ex... More Info

Well Service | Workover Rigs - WELL SERVICE RIG - FRANKS 1287-160-DTD-HT D/D Well Service Unit p/b DETROIT 8V-71N Diesel Eng, ALLISON CBT-4460-1 Trans. SERVICE KING 96" 180,000# Hydraulically Raised & ... More Info

Well Service | Workover Rigs - FRANKS 300 D/D 1287 w/hydromatic brake, Well Service Unit p/b DETROIT 8V-71 Diesel Eng, ALLISON 750 Trans, (Reman Dec 2011) FRANKS 96’H 150,000# Tri-Scope Telescopin... More Info

Well Service | Workover Rigs - FRANKS 658 D/D Well Service Unit p/b CAT 3406 Diesel Eng, ALLISON HT-750 Trans, FRANKS 96’H 180,000# 4-Leg Telescoping Mast, Hydraulically Raised & Scoped w/4-Sheave... More Info

Well Service | Workover Rigs - FRANKS 658 D/D Well Service Unit p/b Series 60 Detroit Diesel Eng, ALLISON 5860 Trans, 102’H 225,000# (on 4 line) Telescoping Mast, Hydraulically Raised & Scoped, Db... More Info

Well Service | Workover Rigs - IDECO H35 96̢۪ 210,000 MAST, DETROIT 60 SERIES ENGINE, ALLISON 5860 TRANSMISSION, REFURB 2005, IDECO DERRICK REPLACED WITH NATIONAL DERRICK, TUBING DRUM CON... More Info

Well Service | Workover Rigs - IDECO RAMBLER H-35 Oilfield Workover Rig / Service Rig / Pulling Unit, Service Rigs, Used Ideco Rambler H-35 workover rig / service rig / pulling unit, 4 axle carrier, De... More Info

Well Service | Workover Rigs - 2015 INTERNATIONAL PAYSTAR 5900 Flushby Unit. C/w 2003, Refurbished in 2015, Western Fab Ltd. flushby unit, s/n 03-09-1008, 50 Ft. Mast height, 50,000 lb. pull rating, fr... More Info

Well Service | Workover Rigs - 2005 KENWORTH T800 Flusby Unit. C/w Lash Ent. flushby unit, 47 ft mast, slant compatible, 3x5 Gardner Denver triplex pump, 5000 psi, 2005 Advance 8m3 tank, TC 406 code, P... More Info

Well Service | Workover Rigs - 2003 KENWORTH T800 Flushby Unit. c/w Online flushby unit, 47 ft. mast, slant compatible, Pullmaster HL25 wotking winch, Pullmaster PL5 catline winch, 2002 wabash two comp... More Info

Well Service | Workover Rigs - 2005 KENWORTH T800B Flushby Unit. c/w Online flushby unit model 50-50, s/n 24641, 40 ft. mast,Salnt compatable, Pull master HL25 and PL5 winch, Gardner Denver 3x5 triplex... More Info

Founded in 1969, RG Petro-Machinery Group Co., Ltd. is the manufacturing base of Chinese major technical equipment and fast move petroleum drilling rigs. At present, it has 12 subsidiaries with 9 production and supporting branches. Its main products include 12 series of more than 200 varieties, such as truck-mounted drilling rigs, skid-mounted drilling rigs, trailer-mounted drilling rigs, workover rigs, oilwell logging equipment, and integrated automatic well service equipment.RG Group has established a complete scientific and technical research and development system. It has academician workstation, post-doctoral scientific research workstation, and the National Petroleum Truck-mounted Equipment Standardization Work Department. It is responsible for hosting in drafting the national petroleum and petrochemical industry truck-mounted equipment standards. It has a nationally recognized enterprise technology center and metrology inspection laboratory, and has strong machinery fabrication and system integration capabilities. The company has passed ISO9001 and API Q1 international quality system and been authorized to use API 4F, 7K, and 8C monograms since 1990s.RG provides the oil and gas drilling equipment and all-round services according to the demands of the customers globally, including drilling services, equipment maintenance services, engineering services, inspection services, and equipment leasing etc. RG Petro-Machinery Group Co., Ltd. makes the great efforts to provide the first class equipment and services for the oil and gas industry of China and the world.

The automatic operation equipment for minor workover is mainly composed of a wellhead operation device, hydraulic elevator, pipe and rod transmission and arrangement device and electro-hydraulic control system.

The device adopts the structural form of dispersing the functional modules and integrated installation on the workover rig: with the hydraulic tong, manipulator and anti splash snap device set on the derrick of the workover rig, which can expand and rotate, and the safety slip is installed above the BOP.

The device only needs to install safety slips, which realizes rapid installation and migration and shortens the auxiliary working time. The device has the function of moving back and forth, left and right, which is convenient to align the wellhead. The height of the hydraulic tong is adjustable and can adapt to the wellhead with different heights. Hoisting equipment and special transport vehicles are not required for the installation and removal of the device.

The main electric control box can be installed on the operation vehicle or integrated into the modular wellhead operation device. The make-up torque of various oil pipes is set on the touch screen to realize automatic make-up and break-down. Equipped with video monitoring, process prompt, safety alarm, etc. The control system has a perfect action interlocking function to ensure the safety and reliability of the workover operation process. All of the electric cabinets, sensors, connectors meet the requirement of Explosion-proof on field.

SCOPE: To provide a representative basis for determining the availability, capability, dependability, reliability of Stability Systems on Land Based Work-Over Rigs and the recommended practices and procedures for their safe use.

The diagram illustrated in Figure 2-2 is typical of the recommendations set forth by the American Petroleum Institute, The International Association of Drilling Contractors and The Association of Oilwell Servicing Contractors. It should be noted that API (The American Petroleum Institute) is in the process of re-assessing some of these criteria. This information will be addressed later in this document.

The Figure 2-3 shows a typical location preparation plan. The load bearing area (cross hatched area on diagram) should consist of, as a minimum, compacted sand or gravel which requires picking for removal. The area should be level and drained and provide a minimum 8000 psf bearing capacity (API Spec. 4E).

The rig location area may grade away from the well bore along centerline II at a maximum drop of 1:20. The cross grades, parallel to centerline I, should be level. The area shall provide a minimum bearing capacity of 6000 psf.

Using the chart: An anchor in Zone "A" located a horizontal distance of 70 feet from the "Well Head" would require an anchor of what minimum holding capacity? On the chart move along the horizontal legend from left to right until you reach 70 feet. At this juncture proceed vertical until you intersect the curved line for Zone "A", now follow the intersecting horizontal line, left toward the vertical legend. We have now determined that the minimum holding capacity for the anchor, at this precise location, is 20,000 pounds.

Standing at the "Well Head", with the well bore immediately to your back, proceed North (in direction monkey board is facing) 24 paces. (The pace length is not as important as the numerical relationship of the units and the consistency of the unit length. The method will work with any unit of length as long as the same unit is used throughout.) Place a stake or other marker at this location (Bench Reference). Turn West 90 degrees and proceed forward 10 paces. At this location turn your body so that the front portion of your anatomy is approximately parallel to the radial of the guy anchor. If the northwest guy anchor is forward of your right shoulder and the southeast guy anchor is aft to the rear of your left shoulder, it can then be presumed that the radial angles are within acceptable parameters. Repeat the procedure from the bench reference, this time to the east, proceed ten paces. In this orientation the northeast anchor should be forward of the left shoulder and the southwest anchor should be aft of the right shoulder.

A survey of 13 drilling contractors operation 193 drilling rigs in northern Canada and Alaska indicated that there is a wide range of experience and operating practices under extremely low temperature conditions. While there is very little precise information available, there have been a sizeable number of failures in portable masts while in the lowering or raising process in winter. Thus the exposure to low temperature failures focuses on mast lowering and raising operations. Based on reports, however, this operation has been accomplished successfully in temperatures as low as -50 degrees F. While the risk may be considerably greater because of the change in physical characteristics of steel at low temperatures, operators may carry on "normal" operations even at extremely low temperatures. This may be accomplished by a program of closely controlled inspection procedures and careful handling and operation. This should reduce damage and impact loading during raising and lowering operations. At the present, there seems to be no widely accepted or soundly supported basis for establishing a critical temperature for limiting the use of these oilfield structures. Experience in the operation of trucks and other heavy equipment exposed to impact forces indicates that -40 degrees F may be the threshold of the temperature range at which the risk of structural failure may increase rapidly. Precautionary measures should be more rigidly practiced at this point. The following recommended practices are included for reference:

If maintained to these tolerances the sags will indicate a pretension of 1000 pounds for crown to ground guywires and 500 pounds for tubing board guywires. this is based on the use of 5/8 inch, 6x19, or 6x37 class, regular lay, ips, IWRC wire rope, installed according to the rigging guidelines set forth in chart depicted in Figure 5-5

With the new Recommended Practice there are also slight changes in the long existing rectangular guying pattern. The following Diagram, Figure 5-3, is an illustration of the current API thinking.

The drawing on the following page, Figure 5-4, (SAME AS FIGURE 4-4) is another illustration of the continuing evolution of Rig Stability System engineering and design. It represents the latest API thinking relative to planing and preparing a Rig Stability System.

CAUTION: SOLE EMPHASIS SHOULD NOT BE PLACED ON PULL TESTING OR ALTERNATIVES TO PULL TESTING AS THIS MEASURES ONLY ONE COMPONENT OF THE RIG STABILITY SYSTEM.

The rig contractor should be responsible for the following: a. Insuring that anchor capacities are verified and that anchor spacing and capacity is suitable for the mast guying pattern and anticipated loading.

b. Records of pull testing or records of other methods used to verify temporary anchor capacity should be retained by the rig contractor until the job is complete and the guy wires have been removed from the anchors. The records should indicate the capacity of each anchor, the date of verification, name and phone number of the party responsible for verification, and the soil condition at the time of verification.

OUT OF AN ABUNDANCE OF CAUTION IT IS EXTREMELY IMPORTANT TO POINT OUT THAT THE PREVENTION OF RIG UPSET IS DIRECTLY DEPENDENT ON THE TOTAL INTEGRITY OF THE RIG STABILIZATION SYSTEM. THE SYSTEM INCLUDES ALL OF ITS COMPONENTS AND IS ONLY AS SOUND AS ITS WEAKEST MEMBER.

Our research has concluded, that the latest State-of-the-Art in RIG STABILIZATION is to be found in the pending American Petroleum Institute, Recommended Practice for MAINTENANCE and USE of DRILLING and WELL SERVICING STRUCTURES.

The land drilling market worldwide is structured primarily as a rental market, not a sales market, where land drilling companies lease their rigs to E&P companies for an agreed period of time – weeks, months, or years – at a day-rate. The rigs are then used to drill wells and execute the E&P’s drilling programs.

Drilling opportunities are analysed and explored in order, leaving a series of dry holes, until a discovery is made. It is rare for an E&P company to actually own the rigs which they operate, but there are some exceptions such as Chesapeake, who will purchase their own fleet of rigs.

Investors require a minimum level of return for their investment dollars in drilling operations, and typically equate cost with risk. These turnkey drilling contracts may limit risk by guaranteeing a minimum number of wells that can be drilled with the rig. The contract will also outline how the rig can be used – including the pieces of equipment, when to change pieces, temperature and pressure tolerances and the weight of mud.

Nabors operates the world’s largest land drilling rig fleet, with around 500 rigs operating in over 25 countries – in almost every significant O&G basin on the planet. It also has the largest number of high-specification rigs (including new AC rigs and refurbished SCR rigs) and custom rigs, built to withstand challenging conditions such as extreme cold, desert and many complex shale plays.

Headquartered in Tulsa, Oklahoma, H&P is a global business with land operations across the US, as well as offshore operations in the Gulf of Mexico. It is engaged primarily in the drilling of O&G wells for E&P companies, and recognised for its innovative FlexRig technology.

Patterson-UTI operates land based drilling rigs, primarily in O&G producing regions of the continental US, and western Canada. The company also provides pressure pumping services to US E&P companies and specialist technology, notably pipe handling components, to drilling contractors globally.

Precision is an oilfield services company and Canada’s largest drilling rig contractor, with over 240 rigs in operation worldwide. The Company has two segments. The Contract Drilling Services segment operates its rigs in Canada, the United States and internationally. The Completion and Production Services segment provides completion and workover services and ancillary services to O&G E&P companies in Canada and the US.

Pioneer operates a modern fleet of more than 24 top performing drilling rigs throughout onshore O&G producing regions of the US and Colombia. The company also offers production services include well servicing, wireline, and coiled tubing services – supported by 100 well-servicing rigs, and more than 100 cased-hole, open-hole and offshore wireline units.

In Texas, generally considered to be the centre of US land drilling, RigData reports that there are currently 678 active rigs – split between Helmerich & Payne (160), Patterson-UTI (85), Nabors (64), Precision Drilling (39) and 77 other drillers (330).

Most new onshore rigs, both drilling and work over rigs, are built by OEMs in China. In the US, the larger vertically integrated land drillers have in-house manufacturing operations, so they will outsource some equipment construction, but assemble the new rigs at their own facilities. The leading provider of US newbuild rigs is National Oilwell Varco.

The secondary market, where existing rigs are sold, is largely auction dominated with mostly older rigs changing hands. As a rule, the big land drillers do not sell their newbuild rigs, as each has their own flagship designs.

In order to solve low degree of work over automation, labor-intensive job dangerous, poor working environment issues, Shengji has developed a series of mechanical work over system, including workover automatic system, minor workover automatic system and snubbing operation equipment.

Oil well workover is a high-tech, high-risk work. The conventional oilfield workover rig has problems such complicated operating procedures and high labor intensity. Shengji, in cooperation with the Shengli Drilling Corporation, have designed an oilfield workover rig automation system.

The oilfield automatic workover rig has a high degree of automation adopting modular integration and advanced robot closed-loop control technology. It functions as self-diagnosis, leakage and short circuit protection and fault alarming, etc. It has remote monitoring capability.

The automatic workover rig greatly increases the automation of workover operations, reduces the number of operators, decreases workers’ labor intensity. The technology is advanced, safe and reliable.

First thought when you see the above will be, what new technology is coming to the field and where? This is actually a reprint of an article Well Servicing Magazine published 50 years ago in Well Servicing Magazine (Jan/Feb 1970). I think you will find the article of great historical interest, both as it relates to rig technology today, and for what is happening in the Permian Basin today.

The strong development of deeper and deeper gas and oil pay in the Permian Basin has motivated the development of some truly gigantic equipment.  Drilling rigs, Christmas trees, pipelines and all other operations and equipment have taken on sizes unseen in this area just a few years ago.

Now that the drilling rigs, logging units, and production facilities are up to size and performing their monumental tasks, the industry is awakening to the need for an even larger workover rig to keep the production flowing.  The Machinery Division of Cabot Corporation has tackled the problem and come up with the rig to meet the large demands of the deeper production.

The approach to the problem was simply applying Cabot’s years of experience in engineering, manufacture and field study of rigs for well servicing, workover and drilling. The concept has always been to combine various components into balanced rigs for the task at hand.

Gale Holiman, West Texas Division salesman for Cabot, had this to say of the new rig.  “This is actually the first portable twin-engine rig to be delivered to the Permian Basin that is designed for workover and drilling in the deep gas and oil pay of such areas as the Delaware Basin.  It’s an API rated 300,000-pound capacity rig that’s portable and safe.”

The twin-engine, 600-HP rig is designed and engineered to handle 300,000 pounds of tubing and pipe safely over a 14-foot cellar. The derrick is 112 feet high and telescopes for a roadable load.

Power for the rig comes from two Detroit Diesel (GMC) 8v-71N engines (600HP) with Allison CLBT 4460 transmission and Model 600 compound and lower output drive. The drawworks is a Model 1287 with an effective braking surface of 3,050 square inches. It has a 22-inch single rotor hydrotarder-brake assist. The carrier is a 6-axle, Model 600-C. Road power comes from the same engine used in rig operations. The rotary table is designed for use at 21-foot levels for easy accommodation of blowout preventers. Rotary drive is accomplished by propeller shaft, driven with oil bath elevated chain drive in the derrick.

The main feature of the rig that sets it apart from other rigs now trying to work in the deep pay is the substructure that is engineered and designed for safe work over a 14-foot cellar (a size common in the Delaware Basin). The new Franks rig has the stamina and design to get on location, rig-up fast and get the job done. “That’s the main thing I like about the rig,” said M. F. Mache, owner of the new rig. “We’ve been looking for a rig such as this that has the built-in features we most want. There are rigs at work now that have been “beefed-up” in one place or another to try to meet the severe service these deep pays demand. This rig, however, has been designed and engineered from the start to handle the big jobs.” The rig is API ratted at 300,000 pounds. “That API rating means a lot in terms of safety and ability,” Machen added. I believe we’ll see operators save themselves considerable money because this rig can work faster with the heavier loads. Besides all that, it’s very portable; the main rig gets there under its own power and only a minimum number of additional loads are required to specific applications, such as swabbing, deepening, or whatever is called for.”

“Another thing I like about the rig,” Machen added, “is that while it’s designed for the deeper workovers I can handle the lesser depths – 8,000 feet to 15,000 feet – with ease, because it’s so quick and easy to set up.

The first job for the new rig was Well Number 1, Getty Oil’s Laughlin-Straughan Unit, about twelve miles northwest of Ft. Stockton. The workover involved remedial work on a collar leak at 18,050 feet. Machen Well Service Company moved in the Franks rig and pulled the production string of 4-inch tubing. “We were at work almost immediately,” Machen said. “The portability of the rig exceeded my expectations.”

Horace Poole, Area Superintendent for Getty said, “I am certainly pleased to see a portable rig with this capacity in the area. This is our only deep well around here, but I think Mr. Machen will find plenty of work with other operators. It has the capacity demanded by this deep pay.”