Exceptional Service Quality Delivered in Sakhalin, Russia

Welltec Oilfield Services Russia has delivered outstanding service on jobs performed for Sakhalin Energy Investment Company Ltd. (SEIC) from September 2011 to July 2012.

During that period Welltec had zero misruns. This is a result of thorough job planning, solid client communication and excellent accountability on the part of our local and Denmark based work force.

Service quality has reached an impressive 99.74% for all operations executed for SEIC during these 11 months.

Welltec Oilfield Services Russia has a direct contract with Sakhalin Energy Investment Company Ltd. This contract has been effective since early 2009 and was recently extended thru the end of 2013.


Fast, Efficient and Reliable Logging in Nigeria

The Well Tractor has demonstrated its value to Shell in Nigeria by successfully conveying a cement bond logging operation more than four times faster than the available, alternative conveyance option.

The Well Tractor 318 XR conveyed the cement bond logging tool to total depth 10,730 ft (3,270 m) for the main pass as well as a repeat pass without any incidents. The entire tractor operation was completed in eight hours versus the estimated 36 hours pipe conveyed logging would have taken, providing Shell with an approximate gain of $270,000 in rig time savings alone as a result of applying this e-line solution.

Area VP Sub Sahara Africa, ‘Gbenga Onadeko comments: “This was an extremely important job which has given us a good foundation to spring from and to develop our business even further in Nigeria. To highlight our commitment to our clients in Nigeria, we have brought in the right people and established tool maintenance processes to ensure the highest service delivery possible.”

Shell has now adopted the Well Tractor for all cased hole conveyance in Nigeria as a result of the improved operational efficiency they experienced with the Well Tractor.

Client quote
“Good job done by Welltec. The tool demonstrated excellent performance that clearly shows differentiation from the alternatives”, John Ramalho, Well Delivery Manager, Shell.

Please click here for more details about this operation.


Ecopetrol Increases Contract Value due to High Service Delivery

The largest and leading oil company in Colombia, and one of the top five in Latin America, Ecopetrol, has increased Welltec’s total contract value in excess of 300%. This increase is a result of the high service quality and additional value delivered by Welltec. Over the course of the current contract, Welltec has increased infrastructure, added resources and improved processes to demonstrate commitment to sustained operations in Colombia.

Subsequently, our Service Quality Indicator has been improving steadily, from 75% to 87%; led by a strong attention to detail and skilled personnel.

“We appreciate Welltec’s commitment to our operations and recognize the good work, demonstrated by Welltec, which has facilitated this project,” states the Superintendent of interventions, Ecopetrol.


Welltec Participation at SPE ‘Water Flooding’ Workshop in Angola

Welltec participated in the two day SPE workshop “Water Flooding Offshore West Africa” with contributions that demonstrated our e-line capabilities and commitment to Angola.

The General Manager of Welltec Angola delivered a presentation entitled “Water Flooding: E-Line Conveyed Interventions” that highlighted the importance of quick remedies when it comes to early water breakthrough.
“The best strategy is to constantly intervene in order to prevent or correct the issues relating to water flooding. Welltec offers a suite of intervention tools to isolate water producing zones and ultimately increase production.” Said Simeon Tor-Agbidye, GM Welltec Angola.

The presentation and Welltec’s presence on both days of the workshop were very well received and appreciated by the high level audience, including the minister of petroleum and senior managers from both oil companies and service companies. It clearly showed Welltec’s commitment to doing business in Angola by bringing in local, experienced people to drive our business further and contribute to the training of Angolans for the oil sector.

The workshop took place in Luanda, Angola 11-12th of July.

For further information about our service offerings in West Africa please contact Simeon Tor-Agbidye at sagbidye@welltec.com


Ball Seat Milling on Wireline Saves the Reservoir

With an effective milling campaign in Canada, Welltec has turned a risky, high cost operation into an economical, non-intrusive solution for optimization of a sensitive reservoir.

An operator working in the Bakken formation in Saskatchewan needed to remove a series of ball seat restrictions in order to set a bridge plug near the toe of the well. They had been using jointed pipe and coiled tubing, which resulted in some formation damage as a consequence of pumping large amounts of fluid to power the mud-motors. The costs were high and the results were not ideal.

The client was therefore looking for a cost-effective solution that would not require introducing more fluids into the reservoir. They decided that Welltec’s milling capabilities on e-line was an attractive alternative based on the technical advantage of an electrically powered milling tool.

Once on location, the Well Tractor was used to convey the toolstring down the horizontal well path to the exact location of every ball seat. Once there, the Well Miller, equipped with a 2.845” ball seat milling bit, was activated and milled out the ports for further accessibility below.

To date, Welltec has removed 11 ball seats for this operator with milling times typically less than one hour per ball seat. This has been achieved without adding significant fluid to the formation or requiring large amounts of surface equipment. Improved production is anticipated from these low pressure, fluid sensitive formations.


New Base in Indonesia Commemorated by Safety Achievement

Capitalizing on strong growth in the area Welltec recently opened a new base in Indonesia. The base is located in Balikpapan where experienced personnel are fully equipped to perform Welltec’s full range of services to clients.
The base was opened in style with attendance from key clients and top level management. During the grand opening it was demonstrated that the spacious size of the base can easily handle the current activities as well as the projected growth. With this expansion, Welltec has both the process and location in place to receive, prepare and package for shipping of multiple tools simultaneously for the benefit of our clients in the area.

“Our commitment to our Indonesian clients is underpinned with these new and improved service facilities. We are even better positioned to increase the value of our activities and meet our ambitious development goals,” says Antonius Aji, General Manager, Indonesia.

A perfect HSE record
The base opening also celebrated another important accomplishment in Indonesia: five years without any incidents. This has been achieved through a dedicated effort to quality, health, safety, the environment (QHSE) as well as meticulous job planning.

QHSE is a strong focal point throughout the entire Welltec organization by both management and employees. This is how we reach our objective of delivering unsurpassed service quality to all our clients.

Since opening the first base in Balikpapan in 2009, Welltec Oilfield Services Indonesia has secured direct contracts and performed a series of remarkable jobs. These include the world’s first nipple profile milling on e-line and the first gas lift change outside of the USA.

For more information about our service offerings in Indonesia please contact General Manager Antonius Aji on phone +62 21 719 8750 or email aaji@welltec.com


E-Line Milling Increases Production by 150%

Faced with several wells becoming plugged by scale, an operator was looking for the ideal method to restore well productivity. Several reservoirs were sensitive to foreign fluid invasion and all the wells contained nipple profiles, limiting access further. After consideration they concluded that Welltec’s milling and cleaning solutions run on e-line provided the most flexibility and advantages.

On the first well, initially only a cleaning solution for scale milling was planned; however, it became apparent that running larger OD perforating guns would benefit the recompletion. Hence it also became necessary to remove the nipple profiles in order to gain the required minimum access of 3.5” in the well. Welltec delivered a complete solution that removed the nipple profiles, milled out the scale build up and removed all the debris from the wellbore.

The whole operation was completed in six days, offshore Indonesia. After Welltec’s successful interventions, the client was able to perforate the required zones and increase well production from 1.13 MMSCF to 3.8 MMSCF. Welltec’s milling and cleaning solutions also recovered scale samples, allowing the operator to analyze it for potential remediation. And finally, this robotic, e-line intervention did not require pumping large amounts of fluids into a sensitive reservoir.

Read more about these solutions by clicking here.


Recovering Damaged Straddle Packer

Our ability to quickly provide e-line solutions was put to the test when a simple replacement of straddle packers turned complicated. Combining the Well Stroker and Well Cleaner, we efficiently removed a damaged straddle through the DHSV and recovered all the elements left downhole by the damaged straddle.

The straddle packers were set across an area of parted tubing but after three months they had begun to leak. As part of the original, planned operation, a Well Stroker was applied to pull the first straddle packer which turned out to be missing a metal spring. When trying to pull the next straddle, it got stuck several places in the well. It was finally recovered but the Well Stroker had to be used through the downhole safety valve and side pocket mandrel. At surface, it was concluded that the lower section of the straddle was missing the entire rubber element.

In order to quickly amend the situation, a Well Cleaner PST was rushed to the rig for recovery of the lost elements at 17,303 ft (5,274 m) MD. The Well Cleaner PST made several runs where it recovered the rubber elements and the steel spring from the upper straddle packer along with several, unidentified items. These unidentified items were found to be the “arms” that keep the rubber element of the lower HEX straddle together.

The Well Cleaner PST also recovered several broken elements from the well, implying that the HEX straddle had gotten damaged and the loose parts had been produced through the higher placed straddles. With all the elements safely recovered and accounted for at surface the client was assured that the well was clean of debris down to the top straddle.

Welltec’s solution delivered vital information that allowed the client to plan the next step of the workover and return the well to production.

Read more about this achievement by clicking here.


Well Tractor NG Breaks World Record by 26 miles

Welltec’s new Well Tractor NG got off to an amazing start when it tractored an impressive 423,724 ft (80 miles) in a highly deviated well offshore Norway.

This achievement took place during a major intervention campaign in the Statoil operated field, Oseberg B, in the North Sea. The operator planned to re-perforate a series of existing intervals as well as add new zones. Oseberg B is notorious for its limited rig up height of only 41 ft, adding complexity and reducing tool lengths for all operations.

Following a successful e-line, scale milling operation performed with the Well Miller, the Well Tractor NG conveyed third party perforating guns for 17 descents. Over the course of the operation, the Well Tractor NG performed a total of 21 flawless runs, setting a new world record by tractoring a total distance of 423,723 ft (80 miles) in one trip to the wellsite. Also impressive for the operation was the average tractoring speed of 3,720 ft/hr.

The previous record for total distance tractored in a single well was 282,110 ft (53 miles), which the 318 Well Tractor NG exceeded by 141,614 ft (26.8 miles); a full 50% further.


Milling of Hard Scale One Week Faster than Alternative

Time was of the essence when an operator offshore Norway needed to remove scale on top of a downhole safety valve (DHSV). Welltec removed the scale in one week which was one week faster than broaching that was applied previously.

The DHSV had locked in the open position with no access from surface because of the scale that had settled on top of it. After two weeks of broaching, the well had been opened up to 4.6”. Due to pressing time issues coupled with very hard scale, the operator decided Welltec’s e-line scale milling solution was the better choice.

After four runs, the Well Miller had cleared the scale down to the DHSV, opening the well up to an ID of 4.7”. An attempt was made to pull the DHSV but the fishing neck was unable to be latched. The Well Miller was called into action again; this time fitted with a brush bit, and successfully cleaned the scale around the DHSV, allowing it to be retrieved. After Welltec had removed the scale, the client was able to pull the DHSV and replace it with a new one.

Client Quote
Onshore supervisor: “I would like to thank you and your team for the excellent effort so far. Although we have not yet retrieved the DHSV, the tractor/milling has performed beyond what I anticipated. Welltec mobilized for this job with very little advance notice and the support from the onshore staff in Tananger and Bergen has been first class. The equipment and contingency accessory items were called into action and performed well. You have set the standard for the future milling operations and expectations.”

Click here if you would like to read more about this operation.