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The Luckiest Derrick Man – TDS Drop

You must watch this VDO. In this vdo, it shows that a bad situation can be occurred any time.

It took less than half a minute for this catastrophic happened. The derrick man was extremely lucky because he was in derrick instead of monkey board. This is a right working practicing while working in derrick. We are not sure about the details of this incident but we would like to use this event to raise oilfield safety awareness and learn from other safety incidents to make our work place safe.

What Can We Learn from This Situation?

  • Always be in a safe zone while working in derrick especially when TDS moving.
  • Possible lack of drilling line maintenance or poor quality drilling line
  • Drill floor is one of the most dangerous places on the rig. As you can see from this case, there will be big damage on equipment but we are not sure about people life. We hope they will not get hurt or lost their life.
  • If you don’t have any jobs on the drill floor, you are recommended to stay away from that area.
  • One example of how bad of dropped TDS is Rig 325 Mexico Catastrophic

  • Dynamic dropped object is very dangerous. People spend a lot of time on static dropped objects because they are all visible and easy to recognize. However, dynamic dropped objects are happened when there is movement like this case. Therefore, proper maintenance is the key of success to mitigate this issue.

What Are Your Thought About It?

Please feel free to share your valuable comments.

 

Hydrocarbon Migration

Hydrocarbon migration is a process that petroleum migrates from source rocks into reservoir. In petroleum geology, hydrocarbon migration is divided into two parts, which are a primary migration and a secondary migration.

Primary Migration

The primary migration is when petroleum comes out of source rocks. The mechanisms behind the expulsion of hydrocarbons from source rocks into reservoir rocks are not clearly understood. There are several questions which nobody can clearly answer as (AAPG Wiki, 2015);

  • How does oil escape from the source rock?
  • Does oil migrate out of the trap?
  • Why are there marked differences in oil gravity, wax content, and sulfur content in lateral and stratigraphically successive sands?
  • Why are there differences in water salinity for multiple sands in one structural trap?
  • What is the role of faults in transporting and trapping hydrocarbons?
  • Why are there barren sands within sequences of productive sands?
  • How is the cross-formational flow of hydrocarbons accomplished?
  • Does the form change during migration and, if so, which form is dominant under what conditions?
  • How can we estimate the timing, volumes, and compositions of transported hydrocarbons?

Figure 1 shows the diagram of a primary and secondary migration.

Figure 1 – Primary and Secondary Diagram

(Ref Image: http://www.ngdir.ir/Data_SD/GeoLab/Pics/GeoLabPic_865_2.jpg)

Secondary Migration

Secondary migration is the movement of hydrocarbon through reservoir rocks such as limestones and sandstones which are permeable. Hydrocarbon can travel through these rock as distinct phases in the upwards direction where there is a decrease in hydrostatic pressure.

Three forces relating to how hydrocarbons move in porous rocks are a gravity force, a buoyancy force and a capillary force. In order for hydrocarbons to migrate, the buoyancy force must overcome gravity and capillary pressure. Hydrocarbons will naturally flow through reservoir rocks until they are stopped by impermeable structures. Then they begin to accumulate. If there is no trap, hydrocarbon will reach surface and this is called “oil seepage.”

Hydrocarbons accumulating in reservoirs will separate as layer sequences – gas on top, oil in the middle and water at the bottom (Figure 2).

Figure 2 – Hydrocarbons in Reservoirs

(Ref Image http://1.bp.blogspot.com/-_U6qLaOf49s/VIHgXlKG5SI/AAAAAAAACnk/zMaHaKYmsRc/s1600/natural_gas172.jpg)

References

Richard C. Selley, 2014. Elements of Petroleum Geology, Third Edition. 3 Edition. Academic Press.

Norman J. Hyne, 2012. Nontechnical Guide to Petroleum Geology, Exploration, Drilling & Production, 3rd Ed. 3 Edition. PennWell Corp.

Richard C. Selley, 1997. Elements of Petroleum Geology, Second Edition. 2 Edition. Academic Press.

Transform Organic Matter into Petroleum

This article will explain the overall of how to transform organic matter into petroleum. Chemical processes will take place in order to transform organic matter preserved in source rocks into petroleum. This can be called a cooking process. Three phases regarding maturation of the organic matter to form petroleum are diagenesis, categenesis and metagenesis.

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Long History of Forties Field North Sea

This is the story of Forties oil field which is generally known as the field where offshore production of oil was started throughout North Sea. At that time, every technological and engineering step was a fist, as biggest field in North Sea set to break the boundaries in attempt to start production. Sir Ian Wood, the former CEO of Wood Group, describes it as a science fiction sort of engineering development at that time.

Ref Image – http://www.offshore-technology.com/uploads/newsarticle/731318/images/148706/large/apache.jpg Continue reading

Spectacular Oilfield Calendar 2016 – Free Download

This year, 2015, is one of the toughest years in oil and gas industry because oil price drastically drops than anybody can imagine. We wish in 2016 this will be a great year for us. We create a calendar for 2016 that you can download for free. Each image has 1600 pixels in width and 1200 pixels in height.

We wish you would enjoy our special oilfield calendar 2016. Please feel free to share with your friends, colleges, family members, etc.

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