... Abstract During perforating operations, the vast majority of perforating runs are executed without issue. It is possible, however, for misfires to occur. A special case of misfire can result when guns partially fire, leaving an unknown state of the remaining ballistic train. This type...

... sensitive to the ignition quality (cetene value) of the fuel when idling. With fuels of a rather low cetene value and which give good performance at half or full loads, misfiring occurs when idling. In many of these cases strokes with normal ignition alternate with misfiring strokes in a regular manner...

... above incorporates an expendable modularized initiator positioned in each gun unit ( Fig-3 and Fig-4 ). This concept reduces wire crimping, which in turn reduces the risk of human error, which may cause the gun to misfire. This improvement in reliability also contributes to gain in efficiency...

.... This new criterion has been applied successfully since 2018; 325 m of HMX achieved perforation condition without an indication of misfire or catastrophic self-detonation, resulting in reduce 50% of HNS consumption. In conclusion, the new temperature cutoff is valid for maximizing the use of HMX...

... assembly, which was stuck in the liner following a misfire while attempting to set the plug. The fishing job was further complicated due to the presence of a parted section of electric line on top of the original fish. Recent developments in heavy-duty fishing operations were incorporated...

... and to prevent misfiring ( Newman 2003 ). The guns were successfully activated without nonproductive time (NPT) or health, safety, or environmental (HSE) incidents during operations. A successful perforating operation was completed with 4,000 psi underbalance in a new formation using hydraulic detonation...

... existing plug-and-perf equipment. Wireline service companies traditionally experience reliability in unconventional well perforating ranging from 30 runs/misrun to 100 runs/misrun. Early results suggest the new system may exceed 1,000 runs/misrun. By reducing the risk of mishaps, misruns and misfires, rig...

... guns on coiled tubing (estimated to be 4 to 6 hours from surface), there will be sufficient time to position the guns at depth before detonation, and sufficient time to retrieve the gun string from the wellbore in the event of a misfire. All perforation flow lab tests in the APFL were run at Hejre...

... model parameters in fitting geophysical survey results can be found by minimizing the misfit between observed and calculated arrival times using non-linear optimization schemes (generally called inversion techniques by geophysicists). The misfir or objective function to be minimized must...

... well where a 205 ft patch isolated holes in casing from a perforating gun misfire. All three patches pressure-tested successfully thus enabling the wells to be fracture stimulated and produced. The product provides high-strength flush-bore expandable seals at the ends of a liner comprised...

.... A significant feature of the hydraulically set packer-TCP gun deployment system is that it allows contingencies for recovery of the completion and TCP guns from the well in the event of a total or partial perforation misfire. This was a necessary requirement in view of the fact that a long perforation gun...

... in the work process. Phase 2: Assessing the Baseline Culture Without advance inquiry into the root beliefs, norms and assumptions that drive people's behavior, even the best programmatic efforts may misfire. So it is axiomatic that an organization should carefully assess its culture - communication, trust...

... efficient earth moving equipment and the development of low cost explosives such as ANFO, Just (1980) • There has been of necessity, a need to evaluate the efficiency of such blasts as regards explosive consumption, number of delays, degree of confinement, vibration levels, and number of misfired holes...

...) arrangement for special experimentation. A tuned array is monitored for auto-firing, misfire, or low energy output of any component gun. An audible alarm occurs when any fault is detected. Each individual trace and the algebraic sum of all traces are- buffered and furnished as outputs for recording...