Mixing started on the DF – 1600 @ 8,152’ft. They were putting 50,000 on the bit and sliding @ 2.8' / hr. before mixing started. On the next slide, after mixing the DF – 1600 in the premix and pumped it, there was 41,000 on the bit and it started sliding @ 6.6' / hr., with 50,000 on the bit it went to 13.6' / hr.
In 17 hours of mixing the DF – 1600 our ROP was 37.9’/hr. with slides. The DF-1600 turned in 147’ more than the previous day of 24 hours of drilling using a competitor’s product.
After mixing the DF – 1600 for a 24 hour period the average ROP had increased to 53.9’/hr with slides. The pump strokes had to be increased from 88 to 96 to get the same amount of pump pressure. At 200’ from TD which was 10,060’ (TMD) sliding became necessary, they were able to slide with less weight on the bit and still have a ROP of 13.1’/hr.
While tripping out of the hole, drag was almost unnoticeable, about 5,000 – 7,000 over in spots. Also when the sweeps came around I noticed a lot more fines than from the previous sweeps without the DF – 1600.
It blended the shakers off, due to the fact it was carrying a lot more solids out of the hole.
The well was finished and logged. The drilling engineer noted that the caliper logs looked great and the hole was in gauge. The directional drillers, company man, drilling engineer, drilling superintendent, all believe the test results were very successful and allowed completion of the the well to our planned measured depth in record time.