MOCS Multiple Opening Circulation Sub Fluid Bypass Valve 1
Applications BHA Protection o o Pumping LCM Spotting Acid Work-over and completions o o o Well bore cleanout Fluid displacements Bottoms-up circulation Horizontal drilling o o Boosting annular velocities 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
Operating Procedures 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 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
Operating Procedures 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 Non-bypass Position (Flow to Bit) 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 nonbypass and flowing through the BHA to the 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 in 2 (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 MOCS Savings Value Calculator Rig Type:Drill Ship Day Rate: Depth in Feet: $ 450,000 15,000 Operating Cost per Minute: $ 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 Using MOCS Technology Cost Savings for 1 Cycle in NPT $9,188 Cost Savings Total 5 cycles $79,875 Cost Savings Total 7 cycles (Includes 1 trip for spent tool) $115,375
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