Monday, January 27, 2020

No News Is.......

Prime Rock's rig, the Ensign 777, had its challenges as I forecasted.  The Crosby 10H-1 took 83 days to reach total depth.  As stated prior, this was an ambitious first well with a long measured depth planned.

Let's hope for a great completion with more oil than projected.  $1.91/mcf natural gas isn't going to help this region of the play.  The rig will be heading back to Marathon to spud their third well.

Prime Rock Crosby 10H-1     Source: SONRIS

"The deeper, more pressured region of the play, will have drilling challenges. Those challenges can be very costly as we saw in Marathon's Crowell #1." 
LAMS Stack & Austin Chalk Blog, November 7, 2019

"These are deep wells with TVD's of 16200' and 15332'.   Both of these wells will be expensive so large volumes of hydrocarbons need to be produced. Marathon proved on the Crowell #1 that drilling in this high pressure environment is very challenging."
LAMS Stack & Austin Chalk Blog, November 6, 2019

"This is a deep, ambitious well on the southern end of Masters Creek Field.  It will test the concepts of depletion, high pressure, and water production."
LAMS Stack & Austin Chalk Blog, October 1, 2019

"Pressure 'is your friend' when producing low perm reservoirs, but it's not easy to drill through."
LAMS Stack & Austin Chalk Blog, March 28, 2019

Source: SONRIS

Source: SONRIS

Source: SONRIS


  1. Yeah but the problem is there is no oil where these nice drilling days are. Or its not movable. Ask COP! BTW most of the cost are in the completions/fracs, the drilling days will come down with repetition and learnings. I would think being next to legacy fields where natural fracturing almost worked in the previous spikes of drilling, volatile oil to Condensate fluid properties, pore pressure is fairly high(Think Drive Mechanism), and the basal high Resistivity chalk is still fairly thick. Looks like Marathon is in good spot! Matrix Porosity + Fracture Perm/Porosity + High Pore Psi + High GOR fluids = High EUR's!

    1. ML, check those natural gas prices and the recent result. High water cut and giving away natural gas. You forgot economics in your equation.

  2. I understand you talking up your own book (the updip area). However, please be consistent with your message.

    Exhibit I. - McKowen #1 post on June 17, 2019

    “Let's start with what we don't know:
    -Frac design: proppant/water volume, stage/cluster details, and pressures
    -Reservoir pressure
    -Mudlog: lithology and gas
    -Geosteering; wellbore path and landing zone
    -Timing of the volumes that were released as the initial potential
    -Chlorides of the produced water. Is is frac or reservoir water?”

    “The results that were submitted represent a time period early in the flowback period where the frac water volume is very high. Future monthly production volumes will prove or disprove this theory.”

    The 1/21/20 Crowell well posted rate of 210 bbls of oil was on the first day of flowback. Hence the low oil/gas rates and high water rate (primarily flowback water). Just like before it’s too early to tell, right?..……but unlike the McKowen updip area, there is plenty of offsetting production and high pore pressure in the Marathon area…and from what I’m hearing Marathon is excited about the “current” “cleaned up” performance.

    1. Marget,
      We have significant acreage on the west side and downdip. My "own book" is scattered across the play. What is "your book"? My message has always been factual, timely, and for the good of all. Sounds like you should start a blog and contribute hundreds of hours for the common good?

    2. It clearly appears from your post that also referenced previous posts about your prediction of the western fairway that you were saying “I told you so”, while in fact you were referencing a state test on the first day of production with the whole flow back problems with making estimates early on, of which you pointed out on an previous post for COP Mckowan(over to the East on acreage you assembled for COP).

      I don’t think it’s a coincidence that MRO made this comment in their conference call: “Gas/oil ratio, API gravity at around 49 degrees, and water/oil ratio are all consistent with our pre-drill expectations. Again, some encouraging early performance in contrast to some erroneous conclusions you may have seen drawn from state data featuring test rates in the first 72 hours of cleanup." Most likely specifically referencing your negative comment on this blog made about their well.

      It does seem you have changed your tune regarding the Crowell well because you prob realized that there might be something to the western side. May want to go get some more free acreage! It appears so far that COP acreage didn’t have a chance and MRO acreage does, which would be inconsistent with the message you have put out for “the common good”.