Stocker #1-H Austin Chalk Drilling Program and Well

BOPD = Barrels of oil per day; MCF = Thousand cubic feet of natural gas also the standard unit for gas sales; MCFPD = Thousand cubic feet of natural gas per day . Glossary.

Sorted by Well Name

8/11/2008 For the month of June, the well produced 4,889 MCF and 295 Barrels of Oil.

7/17/2008 For the Month of May, the well produced 4,750 MCF and 269 Barrels of Oil.

6/4/2008 For the month of April, the well produced 4,355 MCF and 304 Barrels of Oil.

5/12/2008 MPI is only providing monthly totals, so we are unable to post daily averages, as we have previously.

For the month of March, the well, produced 4,664 MCF and 306 Barrels of Oil.

For the month of February, the well produced 4,444 MCF and 286 Barrels of Oil.

2/24/2008 For the month of January, the well produced a total of 212 Barrels of Oil and averaged 155.22 MCFPD.

1/23/2008 For the month of December, the well averaged 9.2 BOPD and 138.87 MCFPD.

12/26/2007 For the month of November, the well averaged 9.66 BOPD and 183.76 MCFPD.

12/10/2007 For the month of October, the well averaged 9.74 BOPD and 190.90 MCFPD.

11/2/2007 For the month of September, the well averaged 10.86 BOPD and 195.36 MCFPD

9/25/2007 For the month of August, the well averaged 10.32 BOPD and 202.61 MCFPD.

8/21/2007 For the month of July, the well averaged 11.39 BOPD and 217.32 MCFPD.

7/17/2007 For the month of June, the well averaged 12.24 BOPD and 229.63 MCFPD.

6/28/2007 For the month of May, the well averaged 11 BOPD and 229 MCFPD.

5/04/2007 For the month of April, the well averaged 13.52 BOPD and 251.17MCFPD.

4/04/2007  For the month of February, the well averaged 14.4 BOPD and 253 Mcfpd

2/20/2007 For the month of January, averaged 12.8 BOPD and 247 Mcfpd.

1/19/2007  For the month of  December, averaged 13 BOPD and 249 Mcfpd.

12/12/06 For the month of November, averaged 14 BOPD, and 276 Mcfpd.

11/08/2006 For the month of October, the well was shut in for 4 days during repairs on location nearby, and had 4 days of compressor problems. For the 23 days of full production, the well averaged 14.22 BOPD and 384 MCFPD

10/10/2006 For the month of September, averaged 17 BOPD, and 327 MCFPD

9/06/2006 For the 22 days on Production for the month of August, averaged 22 BOPD, and 377 MCFPD

8/22/2006 Well was shut in for 9 days for repairs. After repairs complete, well flowing 25 BOPD, 423 MCFPD

7/26/2006 flowing 18 BOPD, 326 MCFPD  

6/27/2006  flowing 11 BOPD, 218 MCFGPD

5/10/2006  flowing 19 BOPD and 360 MCFGPD          

4/13/2006 flowing 20 BO 420 MCFGPD

3/20/2006  flowing 20 BO 420 MCFGPD                 

3/2/2006 Flowing 25 BOPD and 500 MCFGPD.

2/2/2006 flowing 650 mmcfpd.

12/21/2005 The Stocker continues to flow at approximately 500 mcfpd and 30 bopd

11/5/2005 The Stocker continues to flow at approximately 500 mcfpd and 30 bopd.

10/4/2005 Cruse and Stocker wells were shut in for hurricane Rita on 9/23.  Due to storm damage of roads and to other related facilities, the wells were not able to be place back on line until Friday 9/30.

8/4/2005  Stocker producing at a rate of 1.3 MMCFPD.

8/2/2005   EL PASO FINISHES EARLY!  CRUSE AND STOCKER WELLS BACK ON !

7/15/2005 IMPORTANT NOTE: El Paso has notified us that, in order to comply with the Pipeline Safety Act passed by congress last year, it must shut the gas pipeline that we ship into for 7/19 to 8/10, to install equipment needed to be in compliance.  As a result, we will be unable ot make any sales from the well during that period.

6/20/2005 Stocker continues to produce between 1.3-1.5 MMCFPD and 60-100 BOPD.

5/16/2005  The Stocker is producing  between 1.5-2 MMCFPD and 100-150 BOPD

5/5/2005 The Stocker well for the part of April that it was operational sold approximately 1600 barrels of oil and  23 million cubic feet of natural gas.  The check for that production should be paid in June. The well is currently on restricted flow through a 12/64th choke (flowing through a hole approximately 1/6th of an inch in diameter), producing around 2.5 million cubic feet per day, with a flowing tubing pressure of 3,400 psi.  Flow is currently restricted because (1) the btu content of the gas is higher  than pipeline specification, and (2) the gas has a CO2 content of about 4%, which must be reduced to meet pipeline specifications.  A treatment plant would enable significant increase in production, at a cost of around $250,00 annually (which would only be about 20 cents per MCF), but we believe that that expense can be avoided by waiting until the Cruse  well is completed and on stream in early June.  By blending the untreated Stocker gas with the treated Cruse gas, the mix should be able to meet pipeline specification. At that time, the Stocker well can be opened up to a higher level of production.

4/18/2005  Choked well back to a 12/64th choke to restrict production to level that temporary dehydration equipment could handle so that production could be sold into pipeline.  Temporary dehydration unit capacity limited due to current water production during continued well cleanup.  Well flowing 3 million cubic feet per day of gas, 200 BOPD and 70 BWPD, with 4% CO2.  Fesco calculated open flow rates at 27 million cubic feet per day and 1800 BOPD.  Permanent well treatment equipment ordered and expected to be delivered and installed in 2-1/2 to 3 weeks, with 5-7 million cubic feet and 400-500 bopd capacity, which is the anticipated production level planned for the well.

4/15/2005  Opened up well for testing with Fesco equipment - producing 24 barrels of mud and water per hour and oil at 760 BOPD rate, gas flare estimated at around 18 million cubic foot per day rate.

4/5/2005 Production testing expected to begin on Saturday or Sunday.

4/4/2005 Packer and production tubing placed in hole and well head placed on well.  Drilling rig initiating rig downs for move to start drilling Cruse #1-H.  Move expected to complete by Thursday or Friday, after which a workover rig will move into place to initiate production testing on the Stocker well.

3/29/2005 Finished running slotted liner into well bore

3/24/2005 Reached TD of well, encountered significant fracture and flare, and began pulling out of hole.

3/18/2005 About 6:00 yesterday evening a fault or fracture system was encountered that resulted in the gas in the mud lowering the mud weight form 12.5 pounds per gallon to 9 pounds per gallon, resulting in 70 foot flares.  at 2:30 this morning, and additional fault or fracture system was encountered at around 4,800 foot in the lateral well bore, that caused pressures at the well head to increase to 1,600 psi, and 100 foot flares.  About 2-1/2 hours were required to circulate and increase the mud weight in order to resume drilling.  At around 10:00 this morning, the downhole drilling motor quit working, and the rest of the day will be required to trip out the motor. See pictures of 3/17-18 flares on the Stocker pictures page, which can be reached by clicking on the Stocker Pictures button above.

3/17/2005 Drilling at 4,800 feet, appear to have crossed another fault, expect to reach TD tomorrow, clean out the well bore and insert the slotted liner by Sunday. It will take about 3 days thereafter fro the drilling rig to move to the Cruse #1-H well, so that the Stocker well can begin removing the drilling mud and begin production testing.  Pictures of some of the recent flares (some of which reached as much as 50 feet high) encountered while drilling are shown below.

3/11/2005 Unable to initiate sidetrack at 3,500', tripped out and replaced drilling assembly and initiated sidetrack at 2,600'.  Drilling at 3,100' higher in formation so as to enter higher on the upthrown side of the 3,800' fracture.  All previously drilled and sidetracked well bores left open. Target TD mid next week.

3/7/2005 Encountered 3rd significant fault (out of apparent 9 total) at 3,807' on 3/5.  While tripping out drill string and drill motor to change motor, encountered strong pressures, 45-50' flares and significant oil flows.  Increased mud weight to control pressures.  Starting new sidetrack at 3,500' with new drilling assembly.

2/23/2005 Crossed a fault, which resulted in well bore drilling into ash bed at the top of the "A" zone.  Backtracking to curve to drill sidetrack higher into the zone so that when fault is crossed, the well bore will be sufficiently higher in the zone.  Initial well bore will be left open as well as the sidetrack.

2/21/2005  The lateral well bore is 2300 feet into the lateral.  Flares of 3-10 feet were experienced over the weekend with elevated pressures exceeding 3000 psi. 

2/17/2005  the lateral well bore assembly was on bottom and drilling the lateral well bore, and receiving 600-800 units of background gas in the drilling fluid returns.

2/16/2005   The curve of the new well bore was completed, and the drilling assembly used for drilling the curve was pulled out of the hole and replaced with the lateral well bore assembly.  

The Unit Drilling Company rig that is drilling the Stocker well is shown on the stocker pictures page, which can be reached by clicking on the button above.

The Stocker well is a reentry onto a vertical well bore originally drilled as a Woodbine Sandstone well, which failed to encounter any Woodbine sandstones, but which encountered high pressures and hydrocarbon shows while drilling the Austin Chalk zone above the Woodbine zone.  BWOC attempted to drill an Austin Chalk horizontal well bore in 2000, and initially tested significant volumes of natural gas and oil, but encountered production problems when the barite based drilling mud responded to the heat at that depth, by drying out and hardening to a rock-like consistency, impeding production.  More recent drilling in the area has confirmed that the use of polymer based mud avoids that problem. 

The drilling rig moved onto the location  January 28-30, 2005, and began the drilling operations on February 2, by retrieving the liner that had been inserted into the previous well bore curve. The previous well bore was then cemented shut so that it would not interfere with the drilling of the new well bore.

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