bengsoon/volve_alpaca huggingface dataset:
Hourly activities:
00:00 - 00:45: Picked up bull nose jetting sub, test plug and RIH same.
00:45 - 01:30: Unable to RIH due 19" diverter insert still installed. Removed same.
01:30 - 02:15: Ran in with test plug and jet sub from surface to 135m. Washed down to 142m at 1700 LPM and 75 RPM.
02:15 - 03:00: Ran in and landed off test plug in well head.
03:45 - 04:45: Held tool box talk prior to pressure test of the BOP nt2 connection and HPDR. Commenced pressure test 25/345 bars 5/10 min. Started to pull out of hole when hydraulic hose bursted on the iron roughneck rollers.
04:00 - 05:00: Repaired hydraulic hose and fitting.
05:00 - 06:00: POOH with test plug and jet sub assy.
06:00 - 07:00: Broke and laid down BOP test plug and jet sub.
07:00 - 07:15: Held toolbox talk prior to running nominal seat protector.
07:15 - 07:45: Made up WBRT/NOMINAL seat protector and RIH on 5 1/2" DP.
07:45 - 09:45: Malfunction on aft PRS. Investigated situation, found bursted hose in dragchain.
09:45 - 12:15: Brought work basket to drillfloor. Prepared permit and repaired hose in dragchain.
12:15 - 12:30: Tested aft PRS after repair. Found hose in dragchain to be thight but otherwise OK. Decided to use FWD PRS to continue RIH with WBRT/NOMINAL seat protector.
12:30 - 14:00: Continued to RIH with WBRT/NOMINAL seat protector on 5 1/2" DP.
14:00 - 14:15: Set nominal seat protector according to vetco procedure at 141,3 m MD. Set down 5 MT, pull tested with 3 MT overpull.
14:15 - 15:00: POOH with WBRT, broke out and laid down same.
15:00 - 15:15: Held toolbox talk prior to removing diverter.
15:15 - 16:45: Picked up diverter and set aside. Thightened slick-joint/overshot connection on the BOP. Filled riser with water and verifed connection holding hydrostatic pressure. Installed diverter in housing.
16:45 - 18:00: Clear and tidied rigfloor. Held toolbox talk prior to making up 17 1/2" drilling BHA.
18:00 - 19:45: Made up 17 1/2" drilling BHA to ADN sub.
19:45 - 21:15: Fenced of drillfloor and WH module prior to handling ra source. Transferred ra source from shipment container to installation carrier. Attempted to install ra source in ADN nogo.
21:15 - 22:15: Made several attempts to install the ra source in the ADN sub nogo. Attempted with dummy ra source OK.
22:15 - 23:30: Discussed situation, suspected thread damage on ra source. Decided to change to backup ADN and ra source. Moved ra source from installation carrier to shipment container, thread mated correctly inside shipment container. Reconsidered action and made new attempt to install ra source. Removed adapter on ADN and transferred source directly from the installation carrier into the ADN. Installed ra source succesfully.
23:30 - 00:00: Continued to make up 17 1/2" drilling BHA. Made up NM drillcollar.

24-hour summary: POOH with BOP test plug. Installed nominal seat protector. Made repairs on PRS due to bursted hose. Made up 17 1/2" drilling BHA and RIH with same to 1000 m MD.
Hourly activities:
00:00 - 03:00: Continued to make up 17 1/2" drilling BHA. Made up 8 1/4" drillcollar, jar/accelerator, x-over and 5 1/2" HWDP. Installed PS-30 slips.
03:00 - 05:00: RIH with 17 1/2" drilling BHA on 5 1/2" DP. Picked up and made up 27 singles.
05:00 - 06:00: Continued RIH with 17 1/2" drilling BHA on 5 1/2" DP stands.
06:00 - 07:15: Continued RIH with 17 1/2" drilling BHA on 5 1/2" DP to 1100 m MD.
07:15 - 07:45: Connected TDS for test of MWD/LWD tools. Encountered problems with mudpumps and when bringing up the rate.
07:45 - 08:15: Leakage observed on mudpump Liner spray on mudpump not working. Repaired mudpumps.
08:15 - 08:45: Performed test of MWD/LWD tools. Brought pump rate up to 3500 LPM 101 bar SPP. Not able to establish communication with arc tool.
08:45 - 10:30: Continued to RIH with 17 1/2" drilling BHA from 1100 m to 1260 m MD. Picked up single to space out for drilling shoetrack on 1 stand.
10:30 - 11:00: Brought pumprate to 3000 LPM and washed down from 1260 m to 1288 m MD. Dumphose not handling flow routed return flow to shakers and pumproom.
11:00 - 11:45: Continued washing down from 1288 m to 1319 m MD at 3000 LPM. Tagged obstruction at 1319 m MD with 5 MT wob.
11:45 - 12:15: Attempted to perform choke drill. Rig choke sensors not reading pressures.
12:15 - 14:00: Investigated sensor fault. Found faulty i/o module and sensor. Prepared for reparing sensor.
14:00 - 14:45: Brougth pumps up to 4500 LPM and observed/rearranged dumphose to take full return flow. Meanwhile worked on choke sensors.
14:45 - 16:30: Continued repairing choke sensors. Meanwhile cleaned and tidied in moonpool, shaker area and BOP control room.
16:30 - 17:00: Performed choke drill.
17:00 - 17:30: Established drilling parameters 3000 LPM 50 RPM and reamed section from 1319 m to 1326 m MD. Tagged firm cement at 1326 m MD.
17:30 - 21:15: Drilled firm cement from 1326 m MD to 1330 m MD. Drilling parameters flow 4000-4500 LPM SPP 130-160 bar 80-90 RPM 3-10 MT wob torque 10-20 KNM string stalled out on occasions. Reamed as required. Drilled float collar at 1330 m MD.
21:15 - 00:00: Drilled cement in shoetrack from 1330 m to 1355 m MD. Drilling parameters 4000 LPM SPP 130 bar 90 RPM 3-5 MT wob torque 16 KNM.

24-hour summary: Drilled 20" shoetrack with 17 1/2" drilling BHA. Performed choke drill. Repaired choke sensors. Displaced well to 1,35 SG performadrill.
Hourly activities:
00:00 - 00:15: Drilled 17 1/2" section from 1431 m to 1436 m MD. Had to stop drilling due to prevailing problems with cuttings conveyer belt. Not able to restart belt.
00:15 - 05:00: Conveyer belt could not be restarted as the shute in which the belt is running was full of cuttings. Opened forward shute on conveyer system to bring cuttings forward into skip. Emptied conveyer screws in shaker room into skips. Removed cuttings from conveyer belt shute with HP guns, fire hoses and suction hoses. Cleaned up cuttings from deck. Meanwhile circulated well with low rate and rotated string at 20 RPM.
05:00 - 06:00: Continued drilling 17 1/2" section from 1436 m to 1461 m MD. Drilling prameters flow 4500 LPM SPP 238 bar 130 RPM 2-3 MT wob ECD 1,37 SG torque 16 KNM. Restricted ROP to 30 m/hrs to check capacity of cuttings transport on conveyer belt.
06:00 - 07:00: Drilled 17 1/2" hole from 1461 to 1476 m MD. Drilling parameters flow 4500 LPM SPP 239 bar 150 RPM 5-10 MT wob torque 18 KNM. ECD 1,375 SG
07:00 - 07:30: Took survey and downlinked powerdrive by cycling rate 3800/4500 LPM. Observed blockage on cuttings conveyer screw in shaker room.
07:30 - 08:30: Took SCR and calibrated MWD depth. Meanwhile worked to open blockage in cuttings convery screw.
08:30 - 09:45: Worked to open blockage/remove cuttings from conveyer screws in shaker room.
09:45 - 11:00: Made connection and synchronized powerdrive.
11:00 - 12:00: Continued drilling 17 1/2" section from 1476 m to 1512 m MD. ECD 1,375 SG
12:00 - 12:30: Cycled pumprate 3800/4500 LPM to downlink powerdrive. Blockage on cuttings conveyer screw in shaker room.
12:30 - 13:00: Worked to open blockage/remove cuttings from conveyer screws in shaker room.
13:00 - 13:15: Made connection and took MWD survey.
13:15 - 14:00: Continued drilling 17 1/2" section from 1512 m to 1546 m MD. Cuttings conveyer belt on main deck stopped moving/packed with cuttings.
14:00 - 15:30: Attempted to unplug/clean conveyer belt nogo. Decided to pull into casing shoe while making repairs and modifications to the conveyer belt system.
15:30 - 16:30: POOH with 17 1/2" drilling BHA from 1546 m to 1467 m MD. Tight hole took approx 30 MT overpull.
16:30 - 18:00: Continued POOH with 17 1/2" drilling BHA while pumping from 1467 m to 1354 m MD inside casing.
18:00 - 19:00: Lined up well on triptank. Changed from PS-30 to manual slips. Static losses approx 100 l/hrs.
19:00 - 00:00: Made modifications to cuttings conveyer belt and fitted drainage hatch IBC underneath drain bracket for flushing with fire hoses orifice of discharge shute meanwhile serviced top drive. Tested path for cuttings transport and fluid discharge through the DCI system OK. Static losses 30 l/hrs.

24-hour summary: Drilled 17 1/2" hole from 1461 m to 1546 m MD. Had problems with cuttings conveyer belt. Pulled into casing shoe. Fixed and modified conveyer belt. Ran back in hole and washed down from tag point at 1541 m MD.
Hourly activities:
00:00 - 02:45: Continued making modifications to cuttings conveyer belt.
02:45 - 04:30: RIH with 17 1/2" drilling BHA from 1354 m to 1541 m MD. Pumped at 2000 LPM on way in no rotation. Took weight and reamed through ledges at 1390 m MD and 1396 m MD. Meanwhile continued modifications on cuttings conveyer belt.
04:30 - 05:30: Tagged fill at 1541 m MD. Stepped up rate to 4500 LPM. Worked to get stable conditions on shakers and cuttings conveyer belt. Took cuttings partly to conveyer belt and partly to DCI unit with overboard discharge. Cut back rate to 3500 LPM to get stable condtions on shakers.
05:30 - 06:00: Washed from 1541 m to 1546 m MD. Parameters flow 3500 LPM SPP 162 bar 120 RPM 1 MT wob torque 13 KNM.
06:00 - 23:00: Drilled 17 1/2" hole section from 1546 m to 1859 m MD. Driling parameters flow 4500 LPM SPP 248 bar 180 RPM 3-5 MT wob torque 14-23 KNM ECD 1,37-1,38. Took surveys on connections. Reamed stand before connections. Downlinked powerdrive at 10 15. Experienced problems with mudpump
23:00 - 00:00: Mud pump down failed, washout in valve seat, shut down pump. Mud pump also out of service. Had to stop drilling. Reciprocated on stand while working on mud pump

24-hour summary: Drilled 17 1/2" hole section from 1546 m to 1881 m MD. Made repair on mud pump
Hourly activities:
00:00 - 01:45: Continued working on mud pump# 1 and 2. Meanwhile on stand pumping 1800 LPM rotation 30 RPM to make up 14" casing joints in doubles, inserts and guides on PRS to tight for 14" casing
01:45 - 04:45: Continued working on mud pump 1 and Attempted to remove suction valve seat nogo. Removed the complete suction valve seat housing and replaced with housing from mud pump Meanwhile set back one stand and reciprocated on previous stand.
04:45 - 05:00: RIH with 17 1/2" drillng BHA for recommencement of drilling.
05:00 - 06:00: Continued drilling 17 1/2" section from 1859 m to 1881 m MD. Driling parameters flow 4500 LPM SPP 250 bar 180 RPM 6 MT wob/ torque 20 KNM ECD 1,38. Performed SCR.
06:00 - 09:45: Drilled 17 1/2" hole section from 1881 m to 1959 m MD. Drilling parametes flow 4500 LPM SPP 250 bar 180 RPM 3-4 MT wob 22 KNM ECD 1,37-1,38. Found bent/loose die retainer plate on TDS.
09:45 - 12:00: Had to change die retainer plate on TDS. Circulated hole clean. Installed manual slips. Racked back 1 stand and installed side entry circulation sub. Hooked up coflex for circulation while working on TDS.
12:00 - 15:45: Dismanteled and replaced die retainer plate on TDS. Meanwhile circulated at 1500 LPM.
15:45 - 16:45: Tested torque wrench on TDS OK. Installed automatic slips.
16:45 - 17:15: Continued drilling 17 1/2" hole from 1959 m to 1972 m MD. Drilling parameters flow 4500 LPM SPP 255 bar 180 RPM 3-4 MT wob 22 KNM ECD 1,37-1,38.
17:15 - 18:00: Shakers overflowing due to new mud being circulated. Cut back on flowrate and worked string until satisfactory flowrate of 4500 LPM could be achieved.
18:00 - 00:00: Continued drilling 17 1/2" hole from 1959 m to 2080 m MD. Drilling parameters flow 4500 LPM SPP 246 bar 180 RPM 3-4 MT wob 21 KNM ECD 1,37-1,38. Performed survey and reamed stand on connection. Downlinked powerdrive as required. Meanwhile ROV attached DCI hose to subsea clumpweights OK.

24-hour summary: Drilled 17 1/2" hole section from 1959 m to 2150 m MD. Made repairs to TDS. Made repairs to mud pump
Hourly activities:
00:00 - 03:30: Drilled 17 1/2" hole section from 2080 m to 2146 m MD. Drilling parameters flow 4500 LPM SPP 258 bar 180 RPM 3-4 MT wob 23 KNM ECD 1,37-1,38. Downlinked powerdrive as required. Performed pit drill at 02 00. Bled 2-3 m3 mud into active. Good response from driller and geoservice. Experienced problems with mud pumps, standpipe pressure eratic and lower than before.
03:30 - 04:15: Troubleshot problems with mudpumps, isolated one pump at the time. Problem with mud pump took pump out of service. Attempted to drill ahead using mud pump and Got problem with mud pump
04:15 - 06:00: Stopped drilling. Worked on mud pump changed ejection valve and valve seat. Meanwhile reciprocated string pumping 1500 LPM with mud pump Rotated string 20 RPM.
06:00 - 16:30: Continued drilling from 2150 to 2320 m MD. Drilling parameters flow 4500 LPM SPP 265 bar 180 RPM 10-12 MT wob torque 20-25 KNM ECD 1,37-1,38. Performed survey and reamed stand on connection. Downlinked power as required.
16:30 - 00:00: Drilled 17 1/2" hole section from 2320 to 2403 m MD. ROP dropped to 5-10 m/hrs, increased wob. Drilling parameters flow 4500 LPM SPP 265-272 bar 180 RPM 10-18 MT wob torque 16-23 KNM ECD 1,37-1,38. Top of balder encounterd at 2345 m MD. Stick slip tendencies at 2380 m MD, reduced wob as required.

24-hour summary: Drilled 17 1/2" hole section from 2150 m to 2438 m MD.
Hourly activities:
00:00 - 03:00: Drilled 17 1/2" hole section 2403 m to 2417 m MD. Drilling parameters flow 4500 LPM SPP 275 bar 180 RPM 18 MT wob torque 20 KNM ECD 1,37-1,38. ROP down to 4-6 m/hrs.
03:00 - 04:00: Due to decreasing ROP, picked 0,3 m off bottom to clean the bit. Increased pump rate to 4700 LPM and rotated at 220 RPM and held for 10 mins. Got problems with mud pump took pump out of service, reciprocated on stand pumping 2000 LPM. Lined up mud pump RIH and stepped up pumps to 4500 LPM for commencement of drilling.
04:00 - 06:00: Continued drilling 17 1/2" hole section from 2417 m to 2438 m MD. Drilling parameters flow 4500 LPM SPP 276 bar 180 RPM 15-18 MT wob torque 24-30 KNM ECD 1,37-1,38. ROP increased to appox 10 m/hrs. Drilling break at 2431with ROP of 20 m/hrs. Experienced stick slip tendencies at 2436 m MD, decreased wob as required.
06:00 - 14:30: Continued drilling 17 1/2" section from 2438 m to 2486 m MD. Drilling paramaters flow 4500 LPM SPP 272-280 bar 150-180 RPM 13-15 MT wob torque 17-24 KNM ECD 1,37. Took survey and reamed singel on connection. Got problems with mud pumps and
14:30 - 21:45: Worked on mud pumps and Changed swab/piston and liner seal on pump Changed liner spray hose on pump Got pump up and running. Attempted to recommence drilling at 21 45. Observed leakage on TDS washpipe.
21:45 - 00:00: Had leakage on TDS washpipe. Installed manual slips. Installed side entry circulation sub. Connected cement hose and circulated 1300 LPM while working on washpipe. Parked topdrive and changed washpipe.

24-hour summary: Drilled 17 1/2" hole section from 2438 m to 2505 m MD. Repaired mud pumps and Changed washpipe on TDS.
Hourly activities:
00:00 - 01:30: Continued changing washpipe on TDS. Greased TDS.
01:30 - 02:15: Finished working on TDS. Installed automatic slips. Made up stand and RIH to 2486 m MD, stepped up pumps and recommenced drilling.
02:15 - 06:00: Continued drilling 17 1/2" section from 2486 m to 2505 m MD. Drilling paramaters flow 4500 LPM SPP 280-284 bar 180 RPM 8-12 MT wob torque 19-25 KNM ECD 1,37. ROP dropped from 10 m/hrs to 2 m/hrs towards 2505.
06:00 - 13:00: Drilled 17 1/2" section from 2505 m to 2513 m MD. Drilling parameters flow 4500 LPM SPP 280-284 bar 180 RPM 8-12 MT wob torque 19-25 KNM ECD 1,37. ROP dropped from 2 m/hrs to 1 m/hrs towards 2513. Decided to pull out of hole to change bit.
13:00 - 15:30: Circulated hole clean with 4500 LPM SPP 285 bar while reciprocating on stand.
15:30 - 17:00: POOH with 17 1/2" drilling BHA from 2513 m to 2254 m MD.
17:00 - 00:00: Tight hole from 2254. Continued POOH while pumping at 3500 LPM from 2254 to 1798 m MD. Rotated at 40 RPM on 15 MT+ overpull as dictated by hole.

24-hour summary: Drilled 17 1/2" section from 2505 m to 2513 m MD. Little progress could be made, decided to POOH to change bit. Circulated hole clean. POOH from 2513 m to 1439 m MD.
Hourly activities:
00:00 - 02:15: Continued POOH with 17 1/2" BHA from 1798 m to 1661 m MD pumping at 3500 LPM. Rotated at 40 RPM on 15 MT+ overpull as dicated by hole.
02:15 - 03:45: Due to pack off tendencies at 1661 m MD, increasing ECD 1,40 and increasing cuttings trend over shakers reciprocated and circulated on stand at 4500 LPM 20 RPM. Decreased ECD from 1,402 to 1,390 with continuous flow of cuttings over shakers.
03:45 - 05:00: Continued to POOH with 17 1/2" drilling BHA from 1661 m to 1523 m MD. Sticky conditions. Pumped at 3500 LPM rotation 40 RPM. ECD 1,39-1,40.
05:00 - 06:00: POOH with 17 1/2" drilling BHA from 1523 to 1439 m MD. Sticky conditions. Increased flow rate when pulling to 4500 LPM due to increasing ECD 1,40. Rotated at 40 RPM.
06:00 - 07:00: POOH with 17 1/2" drilling BHA on 5 1/2" DP from 1439 to 1337 m MD. Sticky conditions. Increased flow rate when pulling to 4500 LPM due to increasing ECD 1,40. Rotated at 40 RPM.
07:00 - 09:15: Circulated hole clean. Pumped at 4500 LPM. Rotation 30-40 RPM.
09:15 - 09:45: Flowchecked prior to POOH in 20" casing well static. Pumped 4 m3 slug of 1,55 SG mud.
09:45 - 10:00: POOH with 17 1/2" drillling BHA on 5 1/2" DP from 1337m to 1335 m MD. Tight hole at 1335 m MD when stabilizer entering shoetrack. Unable to pull without swabbing.
10:00 - 13:30: Made up TDS to pipe and continued pulling from 1337 m to 1035 m MD while pumping at 1300-3000 LPM. Rotated as dictated by hole 10-40 RPM. At 1115 m MD increased flowrate to 4000 LPM.
13:30 - 15:30: POOH with 17 1/2" drilling BHA on 5 1/2" DP from 1035 m to 800 m MD. No tight spots observed. Pumped 2 m3 slug of 1,55 SG mud.
15:30 - 16:45: POOH with 17 1/2" drilling BHA on 5 1/2" DP from 800 m to 266 m MD. Flowchecked prior to POOH with 17 1/2" BHA well static.
16:45 - 17:00: POOH with 17 1/2" drilling BHA on 5 1/2" HWDP from 266 m to 163 m MD.
17:00 - 17:45: Held toolbox talk. Removed automatic slip and installed master bushing.
17:45 - 20:30: Continued to POOH with 17 1/2" BHA. Racked back drillcollars and jar/intensifier.
20:30 - 21:00: With ADN sub in rotary, prepared for handling/removing ra source. Rigged up adapter and transfer shield. Fenced off drilling area. Attempted to remove ra source from ADN nogo.
21:00 - 23:00: Troubleshot situation. Ra source seemed to unscrew but was still hanging on threads. No back up transfer shield onboard in case shear pin release. Decided to try to pull ra source with the possible implication that back up ADN tool could not be run.
23:00 - 23:45: Pulled ra source using tugger. Source came free, threads seemed to be OK. Transferred ra source to transport container. Planned for picking up backup ADN and backup ra source.
23:45 - 00:00: Picked up 17 1/2" drilling BHA and lifted above rotary. Inspected bit. Prepared for breaking bit.

24-hour summary: POOH with 17 1/2" drilling BHA from 1337 m MD to surface. Flowchecked well. Changed bit. Changed ADN, sonic and arc tools and made up same. Worked on topdrive.
Hourly activities:
00:00 - 00:45: Broke out 17 1/2" PDC bit using bit breaker and manual tongs. Made up new 17 1/2" rock bit to powerdrive. Torqued bit to 37000 ft lbs using manual tongs. Gauged bit, checked nozzles and rollers.
00:45 - 03:00: Broke out an laid down ADN, sonic and arc tools. RIH with powerdrive and hung off same in rotary. Cleared drillfloor and prepared for service on TDS.
03:00 - 04:30: Worked on TDS. Checked TDS for noise while rotating. Changed gear oil on TDS.
04:30 - 06:00: Made up and RIH with backup arc, backup sonic and powerpulse.
06:00 - 06:45: Made up ADN to 17 1/2" drilling BHA.
06:45 - 07:45: Held toolbox talk. Connected TDS and tested MWD tool pumping at 3000 LPM SPP 50 bar OK.
07:45 - 10:15: Held toolbox talk. Transferred and installed ra source in ADN tool using tranfer shield and transfer rod. Had problems to function fingers on collar fingerboard.
10:15 - 10:30: Troubleshot fingerboard communication with ad control panel.
10:30 - 11:15: RIH with 17 1/2" drilling BHA from 40 m to 205 m MD on 5 1/2" HWDP to locate ra source below sealevel.
11:15 - 14:15: Continued to work on collar fingerboard.
14:15 - 14:45: POOH with 17 1/2" drilling BHA from 205 m to 40 m MD on 5 1/2" HWDP.
14:45 - 15:00: Held toolbox talk prior to operating collar fingers manually.
15:00 - 16:00: RIH with 17 1/2" drilling BHA on DC and 5 1/2" HWDP from 40 m to 200 m MD.
16:00 - 16:30: Removed master bushing. Installed automatic slips.
16:30 - 18:30: RIH with 17 1/2" drilling BHA on 5 1/2" DP/HWDP from 200 m to 1031 m MD. Had problems with fingerboard. Meanwhile performed well control drill.
18:30 - 19:00: Troubleshot fingerboard.
19:00 - 19:45: Continued to RIH with 17 1/2" drilling BHA on 5 1/2" DP from 1031 m to 1345 m MD.
19:45 - 20:15: Filled drillpipe and broke circulation in shoetrack. Pumped at 3000 LPM SPP 135 bar.
20:15 - 21:15: Continued to RIH with 17 1/2" drilling BHA on 5 1/2" DP from 1345 m to 1415 m MD. Reamed thightspots at 1360, 1362 and 1378 m MD with 4500 LPM 80 RPM.
21:15 - 00:00: RIH with 17 1/2" drilling BHA on 5 1/2 DP from 1345 m to 2238 m MD hole condition good.

24-hour summary: Made up 17 1/2" BHA. Troubleshot problems with fingerboard. RIH with 17 1/2" drilling BHA to 2513 m MD. Drilled 17 1/2" hole from 2513 m MD to 2523,5 m MD. Circulated hole clean prior to drilling ty formation.
Hourly activities:
00:00 - 00:15: Connected TDS, filled pipe and broke circulation.
00:15 - 01:30: Continued to RIH with 17 1/2" drilling BHA on 5 1/2" DP from 2238 m to 2470 m MD. Hit obstruction at 2470 m MD.
01:30 - 02:30: Brought pump up to 4300 LPM SPP 293 bar and reamed with 120 RPM to clear restriction. Still took some weight on bit. Reduced rate an downlinked powerdrive according to instructions from DD. Reamed down to 2482 with 0-2 MT wob while setting powerdrive.
02:30 - 03:00: Made connection. Performed SCR. Performed MWD survey. Reamed down to 2513 with 4300 LPM and 120 RPM.
03:00 - 04:45: Drilled 17 1/2" hole from 2513 m to 2523,5 m MD. Drilling parameters flow 4360 LPM SPP 284-296 bar 180 RPM 12-19 MT wob torque 23 KNM ECD 1,391-1,394. ROP 5-7 m/hrs. Trip gas peaked at 12000 ppm.
04:45 - 06:00: Performed survey. Circulated hole clean reciprocated on stand, increased pumprate to 4500 LPM 293 bar SPP rotation 120 RPM. ECD when starting 1,393. ECD at 06. 00 1,389. MW out 1,37. Started to add graphite and calcarb to active.
06:00 - 06:30: Continued to circulate hole clean with 4500 LPM.
06:30 - 07:00: Made connection. Performed MWD survey. Stepped up pumps to drilling rate at 4500 LPM.
07:00 - 08:45: Continued drilling 17 1/2" hole from 2523,5 m to 2535 m MD. Drilling parameters flow 4500 LPM SPP 282 bar 180 RPM 20 MT wob torque 24 KNM ECD 1,38. ROP 5 m/hrs. Failure on mud pump and mud pump
08:45 - 10:45: Worked on mud pumps and Changed discharge valve and seat on MP#3. Changed suction valve, seat and cap seal on MP#1. Meanwhile reciprocated and circulated at 1500 LPM 50 RPM.
10:45 - 12:00: Continued drilling 17 1/2" hole from 2535 m to 2541 m MD. Drilling parameters flow 4500 LPM SPP 282 bar 180 RPM 12 MT wob torque 24 KNM ECD 1,38. ROP 5 m/hrs.
12:00 - 12:15: Checked for losses OK.
12:15 - 14:00: Continued drilling 17 1/2" hole from 2541 m to 2548 m MD. Drilling parameters flow 4500 LPM SPP 282 bar 180 RPM 20 MT wob torque 24 KNM ECD 1,38. ROP 12 m/hrs
14:00 - 14:15: Checked for losses OK.
14:15 - 21:45: Continued drilling 17 1/2" hole from 2548 m to 2569 m MD. Drilling parameters flow 4500 LPM SPP 272-280 bar 180 RPM 12-18 MT wob torque 24 KNM ECD 1,37. ROP 1-2 m/hrs. Had drilling break at 2569 m MD, ROP increased to 10 m/hrs over 0,8 m drilled, then decreased again. Dynamic losses of 1-2 m3/hrs. Encountered erratic data on incl. Azim. Sensor on powerdrive.
21:45 - 23:30: Drilled 17 1/2" hole from 2569 to 2572,5 m MD. Drilling parameters flow 4500 LPM SPP 282 bar 180 RPM 12 MT wob torque 24 KNM ECD 1,37. ROP 1-2 m/hrs. Log response indicating top of ty penetrated. Dynamic losses approx 3 m3/hrs. Lost connection with powerdrive sensors, incl, AZ, GR.
23:30 - 00:00: Circulated bottoms up at 4500 LPM to obtain bottom sample.

24-hour summary: Drilled 17 1/2" hole section from 2523,5 m to section TD at 2572,5 m MD. Circulated hole clean prior to POOH with 17 1/2" drilling BHA.