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Less than 4 week delivery on Toshiba 300MVi medium voltage VFD  

EMA is expecting delivery on a brand new 2000 HP Toshiba 300 MVi 4160 volt Medium Voltage VFD in less than 4 weeks.  The medium voltage drive will be sold on a first come first serve basis.  Call us at 800-848-2504.


EMA is proud to stock, sell,  and repair Toshiba Medium Voltage Drives. 

The T300MVi Medium Voltage Adjustable Speed Drive is the most advanced medium voltage VFD  in the industry.  We don’t think any other drive in the market compares.  It has a PWM 5-level design, which allows for a smaller size, reduced component count and  a lower cost. The T300MVi can  use the existing motors and is works with all power systems. In addition, it is  one of the safest Medium Voltage Variable Frequency Drives on the market. (Read about the Medium Voltage Drive market)

The drive has a built in disconnect, vacuum contactors,  and transformer, which allows for  much lower installation costs.    VFDs save substantial energy and on higher horsepower applications, the paybacks can be tremendous.

Click HERE to download a brochure(this is a large PDF, be patient!)  Call 800-848-2504 or hit the “Questions?” balloon on the lower right of this page.



RNG (Real Nice Guy) Consulting, LLC

RNG Consulting, LLC, provides drilling, completion, workover, fluid management, and safety consultants. We provide the industry with professional individuals who bring decades of experience to your project. In addition, RNG consultants have a substantial amount of drilling experience, both international and domestic, including horizontal, horizontal under balance, extended reach drilling (ERD), multi-lateral and directional. All of our consultants are trained in Safety Awareness and Well Control and carry a Well Control Card. Safety is a top priority for RNG Consulting, LLC. Our consultants past training enables them to recognize both safety and environmental issues that can enable the operator to save time and money.

Contact us today for more information

Looking for work?

Submit your resume online to become a consultant with RNG Consulting. We are continually looking for experienced consultants to provide great job opportunities. Please be sure to include the types of wells you have drilled as well as reference phone numbers.

Click here to send us your resume

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  Oil Field NewsLetter (low volume)
Random Story

Safety Factor
09/14/09 @ 19:37

Jim Boone was 6 feet 9 inches tall and weighed 295 lbs. Brother Dave Davis was 6 feet 6 inches tall and weighed 285 lbs. Ed Herring was 6 feet 4 inches tall and weighed 250 lbs. and I ain’t no midget myself. I\'m Jay Colquitt but they call me Cash because my my Gold and Diamond Rolex watch. When I first went to work for Halliburton I weighed 263 lbs. and I made $2.63 an hour so I guess I was paid by the pound. Even big guys can die very fast. Working with high pressures is an art form and Halliburton Services had the best of the best. No other service company could touch Halliburton when it came to horsepower. Max, the Halliburton Services guru for Mechanical Research and Development put a group of men together that could handle these extremely high pressures. South of Jackson, Mississippi in the Piney Woods an oil company had a sour gas well that had blown out and had been killed with heavy mud. All we needed to do was circulate the well with diesel. The company man had the program for us to follow and it called for us to test the surface equipment and discharge lines to 30,000 psi. Since Jim was from Laurel, Mississippi and knew the local personnel he would be the lead off hand in charge. Jim called Max to alert him that the oil company wanted us to test our equipment to such extreme pressures that had never been done in the field before. Max assured Jim that Halliburton had built a “Safety Factor” into these pumps and for Jim to proceed as instructed by the oil company. Reluctantly, Jim agreed but voiced his concern. No one had ever seen 30,000 psi in the field and definitely not at this large volume. In a test cell in Duncan 30,000 psi isn’t that hard to handle in very small volumes. This discharge iron was like 9 in. drill collars with a 3 in. inside diameter. The iron was named “Big Inch” and was clamped together with F style Grayloc clamps with 11 in. hubs. The iron off the back of the pumps was called “Little Inch” and it had “C” style Grayloc clamps. There were no threaded connections with working pressures like this. Halliburton supplied the best and Duncan had built a “Safety Factor” into these HT-1000 pumps. This stuff is really dangerous and without the “Safety Factor” we would be in real trouble. The company man wanted us to stroke the HT-1000 pumps to pressure up on the discharge lines and manifolds. These pumps had 2 3/8 in. plungers with a 60 in. stroke. When you already have pressure on the system it does not take much plunger movement to increase the pressure. These pumps had never seen more than 22,000 or 23,000 psi before. Once we got to this point Jim decided to call and make sure that Max was aware of just what we were doing. The oil company had a phone on location. We all were standing around waiting for Max to sprinkle his holy water on it. Max assured Jim that the “Safety Factor” would cover whatever the oil company wanted to do. He told us to go ahead and pressure up with the pumps. We wanted to jack the pressure in with a hydraulic jack so that we could control the volume pumped. We jumped the pressure from 22,000 psi instantly to 27,500 psi by stroking the HT-1000 pump. Just a little bit of fluid would create a bunch of pressure quick. We had to jack in the rest of the pressure and we all knew it except the company man. The problem was that the company man had other instructions. We knew that we had this “Safety Factor” and we all felt very good about it. After we had a big discussion, Jim decided to call Max to find out just what this “Safety Factor” is. Max was the genius that I have mentioned in previous stories. Max would be silent on the phone until he could give you the proper answer. After waiting a good 10 minutes for the all knowing wizard to enlighten us with the answer, Max said, “Jim, the “Safety Factor” is the 500 miles between Jackson, Mississippi and Duncan, Oklahoma.” He then told Jim to tell the Company Man that from this point on we would and could only control the pressure with the hydraulic jack. The Company Man agreed with Max and we began pressuring up by using the hydraulic jack. When we got to 29,000 psi before the Company Man made us stop. He thought that 29,000 psi was enough. By this time we wanted to continue to 30,000 psi. It had not blown up with the 29,000 psi on it and it probably could stand a little more. As it turned out the 29,000 psi was the maximum pressure that we were allowed to achieve. Our next problem turned out to be the opening of the valve to release the pressure. Try to imagine 4 big fat boys all hanging on to a 20 ft. joint of 2 in. discharge iron attempting to open the 1.3 in. ID valve. As you guessed, this valve did not want to open. When it did open, there were four fat boys in a pile. The force of the released pressure blew down trees in the Piney Woods. It sounded like a cannon going off. When we began to circulate the well our highest pressure was 21,500 psi with a rate of 1.5 Bbl. per minute. As the heavy mud was brought up and out of the hole the rate increased and the pressures went down. The well was ready to go back to production. It was just another walk in the park. Where to now, Boss? There was always somebody waiting on you.

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