Breakout Session Operator Issues

Attendance 5 Operating Company reps 3 Service Company reps Multi-Vote Gas Lock/Gas Separation (6) Problems setting TAC deep (5) Other items

Deep TAC setting One operator has a real challenge limited to setting TAC in tension at 9,000’. Tubing heats up with pumping 220F fluid, tubing expands and probably corkscrews creating tubing wear issues. Trying letting tubing heat up overnight before TAC set. Hot water before TAC set? May try other TAC options including hydraulic. Rare practice to have proper setting tensions for TAC’s

Problems setting TAC deep (5) 9000’ can’t get tension. Have to use J55, don’t want to mix tubing. Setting with 20 K# Hot water to expand tubing before set Leave tubing overnight to heat up before set When tubing idle, returns to normal gradient, cools, contracts 2 Tac’s? One shallower? Set TAC shallower? Seal assembly (floating) TAC? Modified packer (no seals)? Hydraulic TAC? Cold tubing expands after run and TAC set, and hot fluids produced 220F Can’t reproduce pumping condition with 220F fluid

Gas Lock; No fluid to pump The basic cures are slowing down the pump, put on control. Better pump compression Back pressure on tubing Upper TV to keep pressure off of lower TV

Gas Lock/Gas Separation (6) No fluid to pump. Slow down pump, put on control, improve pump compression (longer stroke may aggravate condition with low fluid entry) Gas Lock; pump valves not opening Possibly mis-diagnosed; need a dynamometer Need more back-pressure on tubing Oversized equipment. VFD to adjust speed. Smart VFD adjusts speed based on fluid entry Polished rod lubricator Dry/hot polished rod, packing leaks Tubing blown dry Some pumps have a TV on top to keep load off of lower TV to reduce “gas lock”

Gas Separation Use the Echometer simulation to check design Can only separate what gets to the separator; not foam Can raise the pump out of the curve, above 70 degrees (for high reservoir pressure) “Bottom feeder” uses gravity to orient the intake to bottom of the lateral Better to pump from sump We need straighter laterals with less sumps (drilling cooperation)

Gas Separation Properly sized separators (Echometer program) Slowing downstroke for increased gas separation time, also reduces rod “compression” Slower upstroke to fill pump better? You can only separate what shows up at the intake (pumping multi-phase) May need a liquid collector instead of a gas separator The GARP had a shroud for collecting water and gas separation Packer separators are not good with solids If you want gas separation, keep pump above 70 degrees inclination Longer canisters; more tail joints for sand accumulation. Pulling up hole an option for higher reservoir pressure wells. Good to have a sump/motherbore to put the pump in. Need straighter laterals, less sumps in them Bottom-feeder (Weatherford) gravity ratchets intake to low side of deviated well. Drilling doesn’t listen Conventional vs. best practices (drilling, rod makeup) Need leadership to host forums to facilitate better understanding of the cost of drilling expensive-to-operate wells.

Sand Sand sump; 4 joints below the FN, and a sliding sleeve at the FN. You pull the pump and coil cleanout the sump with the sliding sleeve closed Sleeve is opened as entry for pumping Some success with cup type seals on top of pump plunger section with a steel plunger below Better cleanouts will reduce sand the pump has to deal with.