Multiphase Compressor to Enhance Artificial Lift How the multiphase compressor works A multiphase...

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Transcript of Multiphase Compressor to Enhance Artificial Lift How the multiphase compressor works A multiphase...

  • 2019 Artificial Lift Strategies for

    Unconventional Wells Workshop Cox Convention Center, Oklahoma City, OK

    February 11 - 14, 2019

    Multiphase Compressor to

    Enhance Artificial Lift

    Applications

    Robert Perry

    Hicor Technologies

  • Game changing artificial lift solution for

    Unconventional oil & gas reservoirs

     Unconventional reservoirs & wells progression:

     Multiphase compression offers improved:

     Production

     Reserves

     Capital efficiency

     Emissions benefits

    “Increasing the recovery factor of Permian 4% adds

    the equivalent to the reserves of Saudi Arabia”

    2 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Drilling Holes

    Improving Inflow

    Artificial Lift

    P ro

    d u

    ct io

    n

    Time

  • How the multiphase compressor works

     A multiphase compressor with high compression ratios:

     Liquid injection enables compression ratios of up to 40:1

    3 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Suction (cavity charged)

    Compression (fluids compressed

    in reducing cavity)

    Discharge (fluids exhaust via

    check valve against

    line pressure)

  • How the multiphase compressor

    compares to other technologies

    4 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Technology Multiphase

    Compressor

    Reciprocating

    Piston / Axial

    Rotary Screw

    Pump

    Multiphase

    Typical Max Boost

    Ratio per Stage 40:1 4:1 ~ 4:1

    Multiphase Capability YES NO YES

    High Efficiency Dry

    Gas Capability YES YES NO

    Flexible operating

    envelope YES NO NO

  • Artificial lift for unconventional wells

    5 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Enhancing

    Artificial Lift

    Wellhead

    Multiphase Compression

    Gas Lift

    Rod Pump

    Plunger Lift

  • Artificial lift applications:

    Wellhead multiphase compression

     Decreasing Wellhead

    Flowing Pressure

    (WHFP) increases

    superficial gas

    velocity, reducing

    tubing holdup

    (density):

     Higher superficial

    velocity sweeps

    liquids from tubing

    6 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Mist Annular Annular Mist Slug Bubble

    Increasing holdup & density

    Increasing superficial gas velocity

    Pressure (psi)

    T ru

    e V

    e rt

    ic a l D

    e p th

    ( ft

    )

    1000 2000 3000 4000

    2 5 0 0

    5 0 0 0

    7 5 0 0

    1 0 0 0 0

    Extra drawdown

    350# 50# Wellhead

    Multiphase

    Compressor

  • Artificial lift applications:

    Plunger lift

     Decreasing WHFP

    reduces the back

    pressure the well

    produces against

     Higher differential

    pressure across

    the plunger

    (piston) allows

    greater weight of

    fluid to be lifted:

    7 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Wellhead

    Multiphase

    Compressor

    T ru

    e V

    e rt

    ic a l D

    e p th

    ( ft

    )

    1000 2000 3000 4000

    2 5 0 0

    5 0 0 0

    7 5 0 0

    1 0 0 0 0

    Extra drawdown

    350# 50# Pressure (psi)

    Pressure

    below

    Pressure

    above

    (less 300 psi)

    c. 700ft of

    extra fluid

    lifted

    (1500lbs)

    Example:

  • Artificial lift applications:

    Gas lift

     Gas lift gas increases

    superficial gas

    velocity & reduces

    tubing density

     Decreasing WHFP:

    o Reduces back

    pressure gas lifted

    fluids have to

    produce against

    o Increases effective

    tubing GLR

     Allows deeper gas lift

    making more efficient

    use of gas lift gas

    8 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Tubing size can be optimized for life of field:

    Central

    Facility

    Wellhead Multiphase

    Compressor

    i.e. select larger tubing for early

    production, then add HICOR to

    enhance later life production and

    avoid tubing heading / slugging

    Early Production

    (larger)

    Later Heading / Slugging

    (smaller) vs

    T ru

    e V

    e rt

    ic a l D

    e p th

    ( ft

    )

    1000 2000 3000 4000

    2 5 0 0

    5 0 0 0

    7 5 0 0

    1 0 0 0 0

    Extra drawdown

    1000# 350# 50# Pressure (psi)

  • Artificial lift applications:

    Rod pumps & ESPs

     Gas interference

    (reduced pump

    efficiency) unable to

    lower annulus fluid

    level, two options: o Reduce casing

    annulus pressure,

    larger gas bubbles in

    the liquid phase at

    downhole separator,

    improve separation,

    reduce gas

    interference, more

    effective pumping

    o Act directly on tubing

    with multiphase

    wellhead

    compression without

    the beam pump

    9 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Wellhead Multiphase

    Compressor

    P u m

    p

    S e p ’r

    buoyancy

    flow

    bubble

    T ru

    e V

    e rt

    ic a l D

    e p th

    ( ft

    )

    1000 2000 3000 4000

    2 5 0 0

    5 0 0 0

    7 5 0 0

    1 0 0 0 0

    Extra drawdown

    tubing casing

    Energy added by

    pump

    350# 80# 80# 10#

    Pressure (psi)

  • Artificial lift applications (well cleanup): Wellhead multiphase compression to cleanup ‘frac hit’ gas well

     Existing gas producer well is hit

    by neighboring infill well frac

    (‘frac hit’)

     Gas producer is injected with

    significant quantities of frac fluids

     Gas producer has a new ‘liquid

    loading’ problem, significantly

    reducing production

     Use wellhead multiphase

    compressor to ‘clean up’ gas

    producer (ie produce frac fluids)

     Once gas producer is cleaned up,

    it can naturally produce at

    significantly higher rate without

    wellhead multiphase compressor

    10 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

    Existing

    Gas

    Producer

    Infill

    Fraced

    Well

    Wellhead Multiphase

    Compressor

  • Field validation success:

    First package

    11

     Deployed across 5 different

    Eagle Ford wells:

    o Wellhead multiphase

    compression

    o Plunger

     Focus:

    o Proving value proposition

    o Improving compressor

    performance

    o Understanding performance

    envelope

     Package upgraded and

    redeployed to Permian:

    o Beam pump

    2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

  • Without Multiphase Gas Compressor (on plunger lift):

    With Multiphase Gas Compressor:

    Well uptime - 60% Zero liquids

    Well uptime - 100% Maximum liquids

    Proven value proposition with field data

     $500k p.a. incremental production ($1.50/MSCF gas & $40/BBL oil)

     Payback less than one year

    12 2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

  • Field proven:

    Drawing down wellhead flowing pressure

    Natural flow well – actual field data:

    13

    With Multiphase Gas Compressor:

    2019 Artificial Lift Strategies for Unconventional Wells Workshop

    Oklahoma City, OK Feb. 11 - 14, 2019

  • 14

    With Multiphase

    Compressor:

    Skid Inlet Pressure (PSIG)

    Skid Discharge Pressure (PSIG)

    Skid Gas Flowrate (MSCFD) Compressor Gas Flowrate (MSCFD) Discharge Liquid Flowrate (BPD)

    Continuous slug unloading

    Field Proven:

    Keeping slugging wells unloaded

    Natural flow well – actual field data:

     Multiphase

    compressor

    accommodates

    multiple small

    slugs to keep the

    well unloaded and

    flowing

     Flexible operation

    as multiphase