Blowout at EOG site in Eagle Ford Shale – Nabors Rig Blows Out

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I would like to share this NEWS.

A drilling rig owned by Nabors Drilling USA blew out and caught fire Wednesday evening just before 7 pm while drilling an Eagle Ford Shale horizontal well for EOG Resources in Lavaca County, Texas.

Nabors+Rig+Fire

The well control incident occurred at Farm to Market 966 and State Highway 111 near Petersville, Texas. No injuries were reported.
Well control specialists from Houston have been called to put out the rig fire and conduct an investigation according to Shiner Volunteer Fire department Chief Mark Panus.
A nearby resident, who asked not to be identified, said her husband was in the front yard with their 4 year-old son at the time of the explosion and saw workers running. When he asked workers what happened the workers kept running so he too grabbed their son and ran, she said.

Ref: http://www.drillingahead.com/page/nabors-rig-blows-out-while-drilling-for-eog-resources-in-eagle-fo

Pipe Light Calculation

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Pipe light (figure 1) describes the condition of the well which well head pressure and buoyancy acting upward against a cross sectional area of pipe is greater than weight of the string. If the light pipe condition is happened and the string is not controlled by the snubbing unit, the string will be pushed out of the well.

Figure 1 - Diagram for Pipe Light Condition

Figure 1 – Diagram for Pipe Light Condition

You may see these videos showing the pipe light condition. These videos below clearly demonstrate when the pipe is in “Pipe Light” condition. You can see that the tubing string is  hydraulically pushed out of the hole by wellbore pressure.

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Free Promotion Download Well Control Quiz Book: Tricky Questions and Well Control Equipment

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We would like to have a free download promotion for our Kindle well control book “Tricky Questions and Well Control Equipment” which is the interactive quiz book running on kindle devices, Tablets, and computers.

 

Well Control Quiz Book -Tricky Questions and Well Control Equipment

This promotion will be only 5 days from 08-Aug-13 to 12-Aug-13.  This promotion will be end at 11:59 PM Pacific Standard Time on 19-Jul-13.

Please click this link to see the download page

 

http://amzn.to/16y6Zln

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BP’s $1Billion Battle On ‘Absurd’ Oil Rig Blast Claims As Total Bill For Disaster Hits £27.7Billion

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BP is to appeal $1billion of compensation payments for its Gulf of Mexico oil spill, after lashing out at ‘absurd’ claims by US law firms cashing in on the disaster.

The British oil giant yesterday increased its estimate of the total bill for the 2010 disaster to an eye-watering £27.7billion.

Some £6.3billion of the total is made up of claims by people who say the accident cost them money, many of them fishermen, hoteliers and restaurant owners.

But BP is set to battle ‘fictitious’ claims by ‘greedy’ lawyers looking to use the oil company as a cash machine.

The explosion happened on 20 April 2010 triggering the worst oil spill in US history. BP says it will fight fanciful legal claims over the accident

The explosion happened on 20 April 2010 triggering the worst oil spill in US history. BP says it will fight fanciful legal claims over the accident

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Drillstring Elongation Due To a Tensile Load

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When a tensile load is applied into a drillstring, it results in elongation of the drillstring.

Drillstring elongation due to tensile load 1

The formula to determine pipe elongation is listed below;

Oilfield unit

e = (L x T) ÷ (735,000 x W)

Where;

e = elongation, inch

L = length of drill string, ft

T = tensile load, lb

W = drill string weight, lb/ft

Metric (SI) unit

e = (L x T) ÷ (26.7 x W)

Where;

e = elongation, mm

L = length of drill string, metres

T = tensile load, kN

W = drill string weight, kg/m

Note: The equations are taken from API RP 7G 16th Edition, August 1998.

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