Thursday, November 3, 2016

Mitigation Proposal For Pressure Pulses On Existing Wells Due To Completion Of Neighboring Wells -- November 3, 2016

From a sundry report dated/received February 22, 2016:
  • 17222, 1,769, EOG, Austin 18-21H, Parshall, t9/08; cum 887K 9/16; a short lateral
ISSUE: EOG resources is currently executing a downspacing and infill drilling program. During this process the new infill wells are being hydraulically fractured offset to existing/producing wells.
The existing wells in close proximity to the new infill wells are shut in during the drilling and completion process.
Pressure pulses have been noted in the existing shut-in wells during this process. Due to the pressure pulses, sand from the completions in the original wells can become dislodged and enter the wellbore. When sand enters the existing wellbore it can damage pumping equipment and/or plug the wellbore. When this occurs wellbore intervention is required to replace the damaged equipment and may also require the wellbore to be cleaned out, both operations are costly and slow the process of returning offset wells to production.
PROPOSAL: As a mitigation measure, EOG is requesting approval to fill the existing wellbore with produced water from nearby producing wells. The fluid would increase the hydrostatic pressure in the existing well and assist in counter-acting the pressure pulses and sand influxes impacting the well from the drilling and completion process of the infill wells.
The fluid will be pumped at a very low surface pressure with a fluid pump. Pumping pressures are planned below 500 psi. At or before reaching 500 psi, pumping would cease, keeping the pressure below fracture pressure.
Produced water will be transported by truck or pipeline for the process. 


Production profile for this well (#17222) for past year or so:


PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN9-20163054235422144822471605458
BAKKEN8-20163151655225202819711425356
BAKKEN7-20163150124947277820221281551
BAKKEN6-201614176416851849860626152
BAKKEN5-20160000000
BAKKEN4-20160000000
BAKKEN3-20160000000
BAKKEN2-201600370000
BAKKEN1-201620169017131042263204795
BAKKEN12-201531270427069233372370777
BAKKEN11-201530235723486927415132050
BAKKEN10-2015312129213666254811671197


#31825 -- API 33-061-03799 -- no frack data yet at FracFocus.

************************
  • 20699, 344, Hunt, Karbowski 2-22H 2, Parshall, short lateral, t9/11; cum 178K 9/16;
Production profile for #20699; no explanation for bump-up in production in late 2016:
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN9-201630368036715752135170282
BAKKEN8-20163141364138106220661430236
BAKKEN7-20163145754575152222801621299
BAKKEN6-2016303284333626921381108817
BAKKEN5-201614735712195936213147
BAKKEN4-201619342220484359670
BAKKEN3-20163330765260
BAKKEN2-201622946104593172515020
BAKKEN1-2016311254119471247221470
BAKKEN12-201531110411564519171324313
BAKKEN11-20153095411326520291144585
BAKKEN10-20153113161148562754224769
BAKKEN9-201530144914765622571569322
BAKKEN8-20152989386511920221455343
BAKKEN7-201531924853671997918796

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