MOCS

Multiple Opening Circulation Sub

Fluid Bypass Valve

1

Applications

• BHA Protection o Pumping LCM

o Spotting Acid

• Work-over and completions o Well bore cleanout

o Fluid displacements

o Bottoms-up circulation

• Horizontal drilling o Boosting annular velocities

o Low side cuttings cleanout

• Borehole enlargement o Cutting acceleration while reaming

• Sub sea riser/BOP jetting

Features and Benefits

Features

• Simple operation that requires only one ball

• Flow rate actuated

• Unlimited cycling between bypass/non-bypass

• 60 Second cycle time with ball on seat

• Tool position clearly indicated by SPP

• Tool is designed to trip dry pipe

• Indexing mechanism and spring are protected

• Variable drop ball size

Benefits

• Easy to train on and easy to use

• Alleviates dependency on multiple drop balls

• No wasted trips for an exhausted tool

• Reduced non-productive time

• No guessing about tool position

• No need to lock tool open

• Dependable performance

• Flexible compatibility with various string ID’s

Activation Rates

• MOCS Tool is flow rate activated

• Higher mud weights result in lower minimum activation flow rates

• Lower mud weights result in higher minimum activation flow rates

Launch Position (No Drop Ball on Seat)

• Passive operating position

• Open bore allows fishing operations if necessary

• Tool will not shift until the activation ball is on seat

Operating Procedures

Landing the Ball (Drop Ball on Seat – Pumps at 200 GPM)

• Flow ball down at Max 200 GPM

• A noticeable (200+ psi) pressure

drop will indicate the ball has landed

• Increase flow rate above the minimum

activation rate to shift the tool

• Flow channels in top sub pin allow drainage for

pulling dry pipe

Operating Procedures

Operating Procedures

Bypass Position

• Once minimum activation flow rate is achieved,

tool will cycle open to the annulus on the first shift

• A noticeable 200-600 psi reduction in stand pipe

pressure will indicate that the tool is in bypass

Reset Position- (Shifting) (Drop Ball on Seat – Pumps Off)

• Shut pumps off for 30-60 seconds

• The indexing mechanism will shift as the piston

returns to the reset position

• Tool will shift each time flow is stopped or reduced

below 75 GPM for 30-60 seconds

Operating Procedures

Operating Procedures

• Resume flow above the minimum activation rate

• Tool will shift to Non-Bypass (flow to bit)

• Piston lands in secondary position closing annular

ports and leaving the internal valve ports open to

flow to the bit

• A noticeable (200 – 800 psi) pressure increase over

the SPP in bypass will indicate the tool is in non-

bypass and flowing through the BHA to the bit

Non-bypass Position (Flow to Bit)

Operating Positions

Stand Pipe Pressure Output

MOCS Tool Technical Specs

MOCS Operating Requirements:

• Pump flow rate of at least minimum activation flow rate plus 15% (Depending on mud weight)

• Bit TFA less than 1.4 in2 (Optional bottom sub nozzle available)

• No rotating or operation in doglegs greater than 10°/100’

MOCS 4-3/4” 6-1/2” and 8”

Commercialization

4-3/4” MOCS Tool • 4-3/4” Lab Testing Complete

• 3 Test well runs in the US • All successful

• 1 beneath Ander Reamer

• Field runs to commence in June w/commercial release in late Q3

• Fleet expansion build out in parallel

6-1/2” MOCS Tool • Fully Commercial – 2,500+ logged hours – 0 Failures

• 64 Tools operating in 5 countries

• Customers including • OXY

• PDO

• Total

• Weatherford

• Schlumberger

8” MOCS Tool • 8” Lab Testing Complete

• 2 Test well runs in the US

• 2 Live well runs in the US • All successful

• 115 lb/bbl LCM pill successfully placed

• Field runs to complete in early July w/ commercial release by mid-Q3

• Fleet expansion build out in parallel with testing

Information Needed for Hydraulic

Calculator: (Pre-Job Checklist)

•Complete BHA configuration • Including O.D. and I.D of each component

•Desired placement location for MOCs tool in BHA

•Drilling Fluid: Weight and Type

•Drop ball activated tools in BHA (yes/no)

•Hole Size (in)

•Bit TFA (in^2)

•Pump Capabilities

•Maximum flow (GPM) • Drilling / working flow rate (GPM)

• Maximum pressure (PSI)

• LCM Requirements • Type of LCM

• Maximum concentration desired (lb/barrel)

• Minimum flow rate to pump LCM needed (GPM)

MOCS Value In The Field

Rig Type:Drill Ship Day Rate:

Depth in Feet: 15,000

312.50$

Conventional sub: Ball Drops Time (minutes) Dollars

Cost for 1 Cycle in NPT 2 58.8 $18,375

Cost for 5 Cycles in NPT 10 294 $91,875

Cost for 7 Cycles in NPT (Includes 1 trip for spent tool) 14 411.6 $128,625

MOCS: Ball Drops Time (minutes) Dollars

Cost for 1 Cycle in NPT 1 29.4 $9,188

Cost for 5 Cycles in NPT 1 38.4 $12,000

Cost for 7 Cycles in NPT (Includes 1 trip for spent tool) 1 42.4 $13,250

Cost Savings for 1 Cycle in NPT

Cost Savings Total 5 cycles

Cost Savings Total 7 cycles (Includes 1 trip for spent tool)

$9,188

$79,875

$115,375

MOCS Savings Value Calculator450,000$

Operating Cost per Minute:

Cost Savings Using MOCS Technology

Questions

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