document: On 27 February 2018, Alvopetro Energy announced results from testing its 1ALV6DBA new field wildcat well on the REC-T-183 Block of the Reconcavo Basin. The well was originally drilled in 2014 with a total depth of 3,550m. Logs showed the well encountered 168m of potential hydrocarbon net pay in several intervals, using a 6% porosity cut-off. Plans called for the test of two intervals and possibly a third. Alvopetro perforated and completed 10m of potential net pay in the first interval of the Gomo Member of the Candeias Formation, with 9.7% average porosity.  During the 6-hour, cased-hole test the interval flowed natural gas without stimulation at an average rate 240 Mcfg/d or 40 boe/d on a 12/64" choke, with a final flowing tubing head pressure of 249 psi. After the test, the well was shut-in and an injectivity test was performed to evaluate permeability and expected productivity after stimulation. The interval was then sealed with a bridge plug. In the second interval, 6m was perforated and completed in a potential net pay zone of the Caruacu Member of the Maracangalha Formation, with 11.1% average porosity. A 34-hour, cased-hole test was performed and the interval flowed natural gas without stimulation at a final stabilized rate of 92 Mcf/d or 15 boe/d on a 8/64" choke with a flowing tubing head pressure of 414 psi. During the test 12 barrels of 61deg API condensate was also recovered. Alvopetro then moved up-hole to test a third interval where a 15m interval was tested with 11.5% porosity in the Caruacu Member of the Maracangalha Formation.  This test produced only formation water. Alvopetro is currently analyzing the fluid composition data from the second interval and pressure data from both the first and second intervals in order to predict productivity of the two intervals after stimulation. Alvopetro on 9 October 2014 announced the 1ALV6DBA as a hydrocarbon discovery with 189m of potential net pay over several intervals. Based on logs and mapping Alvopetro has estimated that the structure contains 3.8 Tcfg of gas in place or 620 MMboe. Over 40m of core was taken for extensive special core analysis studies. The 1ALV6DBA had a planned total depth of 3,677m. It was spud with the Early Cretaceous Candeias Formation was the projected objective. The block contains three old dry holes and one 1968 well with oil and gas shows. Alvopetro has a 100% interest in the block. 
summary: 1ALV6DBA new field wildcat well on the REC-T-183 Block of the Reconcavo Basin.Logs showed the well encountered 168m of potential hydrocarbon net pay in several intervals, using a 6% porosity cut-off.