CAPÍTULO I. INTRODUCCIÓN
I. HIDRÓXIDOS DOBLES LAMINARES
I.9 Bibliografía
(Check )
A. PRIOR TO LEAVING OFFICE
* Are you familiar with the Geological Objectives of the well?
* Do you have copies of the necessary offset well data?
* Do you have a copy of the Drilling Program and Well Proposal?
* Is your HUET card valid?
* If travelling to the Timor Sea area, take valid passport (mandatory for ZOCA wells, advisable for non-ZOCA).
* Have you been advised of your travel/accommodation arrangements to the rig?
* Do you have all the required Safety Equipment for the rig? (hard hat, safety boots, safety glasses, appropriate clothing)
B. ON ARRIVAL AT RIG
* Discuss Geological Objectives with Wellsite Manager and Drilling Engineer.
* Review Geological Objectives and Sampling Program with the Mudloggers.
* Review Geological Objectives and Logging Program with MWD engineers(if on board).
* Ensure that Mudloggers have all the necessary equipment and consumables:
* Confirm necessary offset well data are aboard.
* Confirm all reporting forms are current.
* Confirm necessary MWD tools are aboard.
* Confirm necessary wireline logging tools are aboard.
* Confirm necessary coring gear is aboard/in transit.
C. WHILE DRILLING
Note: Wherever possible all data or image files are to be sent to town in digital form, either as an emailo attachment or dropped into a network drive.
Mudlogging:
* Ensure correct mudlog format (for both “fax/A4” and final formats) and scales are used.
* Check and edit mudlog regularly, and always prior to sending to town.
* Up to date mudlog to be transmitted to town prior to agreed morning and afternoon times daily (and/or whenever else required).
* Ensure appropriate samples are being collected by Mudloggers:
* Ensure samples are stored in appropriate containers.
* Mudloggers to check lag routinely.
* Gas detectors to be calibrated routinely.
* Mudlog trip & connection gases should be absolute values, not above background.
* Ensure Mudloggers communicate sufficiently and timely with drill floor, pits, wellsite manager, WSG.
MWD:
* Ensure correct log format and scales are used.
* Ensure MWD hands communicate immediately with driller, then Wellsite Manager and WSG, if drill string vibrations become unacceptable
* Ensure MWD hands communicate sufficiently and timely with drill floor, wellsite manager, WSG.
* Logs to be transmitted to town at regular intervals (and always prior to agreed morning and afternoon times daily) at a scales of 1:500 (& other scales as requested)
* Log digital data to be transmitted daily.
* Reasons for any missing data to be annotated on logs prior to sending.
* Survey data to be transmitted to town daily on directional wells, at TD on vertical wells.
Coring:
* Check that required gear is aboard (including sufficient barrels, core crates, end caps and clips).
* Catch and describe cuttings samples while coring, and include in DGR as "cuttings while coring".
* Attend JHA prior to core arriving at surface.
* Ensure core is checked for H2S with Drager tube as early as possible after core arrives at surface.
* Be present on rig floor while breaking down inner barrels, and box end pieces correctly.
* Ensure inner barrels are laid out in cradles down the V-door and onto the catwalk/pipedeck safely.
* Do not begin cleaning inner barrels on the pipe deck until safe to do so.
* Ensure inner barrels are properly cleaned so that barrel markings won't smear.
* Ensure inner barrels are measured and marked up as per coring program.
* If core is to be cut at the wellsite, organise and hold JHA with those involved prior to cutting and that necessary permits have been obtained by Coring contractors.
* Ensure safe work practices throughout the entire core cutting routine.
* Ensure all pieces of core are put in core crates (1m pieces) or core baskets (9m lengths) and are securely packed.
* Describe core end chips using OMV Australia format and send descriptions to Operations Geologist.
* Ensure all core, including boxes, leaves the rig together.
* Core chips to be manifested and transported to town with mudlogging samples.
* Send Operations Geologist a Core Reconciliation Report, and advise mode of transport and ETA at destination of core.
Daily Geological Report:
* Transmit to town by 07:30 WST daily.
* Confirm all depths reported (and drilling operations performed) with Wellsite Manager (midnight, casing, water, and RT elevation depths).
* Ensure that the morning report is updated by the end of each tour.
* Ensure DGR gas and ROP values agree with mudlog values.
* Trip & connection gases should be absolute values, not above background.
* Remark fully on problems and deficiencies of mudlogging equipment and personnel.
* Include mud and circulation data and maximum recorded temperatures, when wireline logging.
* Include provisional formation tops.
WSG general:
* The end of hitch post-mortem is to be started on day one and added to as necessary when an issue arises.
Do not wait till the last day. Some of your important observations will be lost.
* Constantly check for unsafe acts and situations (do STOP or similar safety observation course on the rig).
D. WIRELINE LOGGING
General:
* While POOH for logs (earlier if timing requires), contact Operations Geologist for final briefing. Email best.
* Prior to POOH for logs, ensure mud sample is taken just prior to stopping circulation (to be manifested and sent to town with mudlogging samples).
* Ensure mud engineer supplies wireline logging contractor with all pertinent mud data, and with a filtrate and filter cake sample when drilling with water-based mud.
* Attend logging JHA.
* Ensure logging engineer has a copy of the final detailed logging program, and fully understands OMV's requirements
* Ensure that, where appropriate, hole is logged while running in the hole in the event that up-logs cannot be obtained.
* Repeat sections will generally be logged over 70m unless advised otherwise.
* Ensure there is acceptable agreement between main logs and repeat sections.
* All data sent to town must be on depth, unless directed otherwise.
* Digital data and faxed prints should be transmitted to town urgently after the data has been acquired, but without impinging on wellsite operations (unless directed to).
* Faxed logs should be at 1:500 scale unless directed otherwise.
* Ensure log headers are carefully checked for accuracy (especially final coords, depths).
* Transmit logging reports (pressure/sample, SWC desc. etc) ASAP after each run, but only when finalised.
*(In most cases) Wellsite Manager to sign-off wireline invoice; WSG to countersign to confirm that services written have been performed.
Wireline Sampling Runs (MDT, RFT, FMT, RCI):
* Depth correlation to be performed at regular intervals when logged interval of sufficient length to warrant it.
* When sample chambers opened at wellsite, gas released must be checked for H2S with Drager tube.
* Hydrocarbon fluid samples drained at wellsite must be stored in suitable glass bottles.
* Water samples drained at wellsite to be stored in plastic bottles.
* Transmit pressure/sample reports to town ASAP.
Sidewall Cores:
* Depth correlation to be performed at regular intervals when shooting interval of sufficient length to warrant it.
* After shooting, WSG to ensure correct transfer of shot bullets from guns to SWC cases on catwalk.
* Ensure SWC jars are labelled correctly.
* Transmit SWC descriptions and SWC Shooting Checklist to town ASAP.
* Ensure SWC’s are wrapped in aluminium foil and then clear wrap (so that they don't move around in jars).
* Rotary SWC’s described keeping core intact (whole core under scope, natural fluorescence only - no cut) .
VSP
* Raw stack, TWT table and observers log should be sent to the office when available.
Conclusion
* Wireline QC, diary, Horner Plot, MDT tables, SWC descriptions and shooting list log should be sent to the office when available.
E. AT TD, PRIOR TO LEAVING RIG
* Complete well post-mortem and send to Operations Geologist with Checklist sheet completed.
* Check mudloggers' sample manifest.
* Check that manifested samples are properly packed for transportation (especially hydrocarbon fluid samples).
* Ensure all samples/logs/core to leave the rig are manifested, with copies sent to Operations Geologist, shore logistics base, and a copy to the wellsite file.
* Ensure any confidential data is either locked in Geologists' filing cabinet, or sent back to town. If rig is going to another operator next well, send all confidential data to town.
* Ensure all required reports have been transmitted to town. Litholog, core and logging reports should be copied to floppy and hand-carried to town as a contingency.
* Hand-carry SWCs.