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Behavior of Gas in a Horizontal Well Kick

Gas kick behavior in horizontal wells is different from the gas behavior in normal wells (vertical and deviated wells). Gas follows Boyle’s gas law when it moves up to the shallower section of the wellbore. However, in the horizontal section, there is no change in volume because gas will move up to high side of the wellbore and there is no change in pressure.

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The gas kick volume will increase when the kick is circulated out of the horizontal section because the reduction in hydrostatic pressure results in expanding of gas as per Boyle’s gas law (see below).

Boyle’s Law

P1 x V1 = P2 x V2

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How To Get into Oil and Gas Industry

The standpoint for employment in the industry of oil and gas today has been consistently vehement.  Most people are expecting a “crew shift” transformation because today a lot of existing employees are quitting or retiring due to which there is substantial demand and fresh employment opportunities. The petroleum industry is one of the most wanted industries for employees because of challenge and payment. There has been increasing need for people who are skilled and credible, ranging through different genres from roustabouts, drilling supervisors, geologists, & engineers, health and environmental consultants, etc.  A couple of strong years of experience and consistency in the oil and gas industry could lead to brilliant opportunities and a bright future ahead. However, the question that arises is- “How should one go about it?

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Usually people can start their journey in this industry through technical or entry-level positions, which might need certain qualifications, but it is not mandatory.  It could be helpful to have some kind of knowledge or experience in mechanical or electrical knowledge because these skills can land you a job in oil & gas industry easier. Your resume will get better with safety-related or technical certifications. Apart from these, leadership & communication skills, working under pressure, being a perfectionist, team work and co-ordination are also required.

Offshore or Onshore?

Positions for both offshore & onshore are available; however, offshore jobs have better pay since individuals with more experience are chosen for the offshore jobs. In fact, offshore operations are quite expensive hence safe & efficient operations are crucial. There are some who think of offshore jobs as more dangerous, and require workers to stay away from home for longer time. There’s no doubt that such kind of jobs involve more long hours of duty and more difficult task, but when it comes to pay, it’s worth it. Continue reading

Drill string valves and IBOPs VDO Training

Drillstring valves and IBOPS are one of the most critical well control equipment on the rig. This VDO training will teach you about drillstring valves and iBOPs. After watching this, you will fully understand several of the valves and their applications. Additionally, we also have full VDO transcript to help anyone who are unable to fully understand the English speaking in the VDO. We wish you would enjoy watching it.

Full VDO Transcript

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Drill string valves stop fluid from flowing up the drill string often if the drill kicks with the bit off bottom. Formation fluids flow from the annulus and up the drill string. Crewmembers close of the drill string valves. The flow is in the string, If the Kelly is made up the can close the upper or lower Kelly cock. If the Kelly is not made up then they can install the full opening safety valve in the top of the drill string.

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Kick Prevention for Horizontal Wells

After we’ve learnt several topics in regard to horizontal well control, today we will talk about how to prevent well control situation both while drilling and while tripping. Since the horizon well control is quite tricky when compared to normal well control due to long reach horizontal section, the best way is to prevent it.

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How To Prevent Kick While Drilling (Horizontal Wells)

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Kick Scenarios in Horizontal Wells For Well Control

Drilling horizontal wells are always in the development phase and people know the geological area pretty well. Additionally, they can accurately determine reservoir pressure of the target sand for the horizontal candidate. Hence, drilling engineers can plan the well with less chance of being underbalance condition. However, there are several scenarios where the well control occurs in horizontal wells. We will need to understand what circumstances can create well control situations in the known well bore pressure like the horizontal wells.

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Swabbed Kick

The swab in the horizontal wells is similar to swabbing in normal well. Swabbing effect can occur when the pipe is pulled off bottom for making up connection or when tripping out of hole. High rate of swab entering into the well can happen if swabbing occurs when tripping out of the hole. The length of horizontal section will be exposed to the differential swab pressure. On the other hand, the swab will be small when the pipe is pulled off bottom for making connection. In this case, you may see several small gas behind the bit which will show on the surface later. Continue reading