OPS.13:5.1 - PumpWorks states what the rig plan supports
This constructed case concerns four ready packages requiring two consecutive rig-hours each, including normal setup. Rig access currently covers hours 0–6. Hours 6–8 are reserved for another use, and their owner can make a separate access decision that accounts for displacement.
The normal case has no repeat. In the adverse case, exactly one planned package needs one immediately available two-hour repeat and then passes; all other planned packages pass first time. The repeat need is known when its first attempt ends. Test permission and configuration are current. The stated schedules also require qualified coverage and any handover to fit within the available plan.
| Plan | Normal case | One-repeat case | Service consequence |
|---|---|---|---|
| Six hours; plan two packages and retain two hours for the repeat. | Two completions use four hours. | Two completions plus the repeat use six hours. | Two completions fit both stated cases. |
| Six hours; plan three packages with no reserve. | Three completions use six hours. | Three completions plus the repeat require eight hours. | The three-completion promise is unsupported for the stated adverse case. |
| Eight hours; plan three packages and retain two hours for the repeat. | Three completions use six hours. | Three completions plus the repeat use eight hours. | Three completions fit both cases if extra access and coverage are authorized. |
| Ten hours; plan four packages and retain two hours for the repeat. | Four completions use eight hours. | Four completions plus the repeat use ten hours. | This requires a further resource arrangement; it is not supplied by the two-hour extension. |
Reserve remains available for the repeat whenever it becomes necessary. Since all packages are ready, the repeat can follow its failed attempt without another dependency delay. A longer repeat, more than one repeat, later permission or lost access reopens these schedules.
OPS.12’s staffing comparison requires qualified relief for an extension that would otherwise consume the original operator’s protected recovery and incident coverage. The responsible parties must also settle the extension’s payment and funding. These inputs determine whether the eight-hour alternative is available for commitment.
Suppose the test-service authority and customer accept the two-case basis, the three-package scope and the evidence required for a completed test package. Once the additional access, relief and other prerequisites are confirmed, they can agree the three-completion service under those stated conditions. Before confirmation, that result remains a proposal. If only the six-hour arrangement is available, the supported proposal covers two completions under the same adverse-case requirement.
The calculation supplies no probability of the adverse event and no guarantee beyond its conditions. A customer requiring a quantified delivery probability needs a matching forecasting basis. An existing four-completion promise remains a live obligation until the authorized parties accept a revision.