.... Predictions are made on in-fill development and a years' worth of production data is collected on the decisions. Analysis of the field production data indicates that timing of in-fill wells (following the parent well) can influence the in-fill production depending on the level of depletion (cumulative...

... Abstract The objective of this paper is to quantify both the formation stress depletion and the pore pressure depletion caused by production from existing parent wells in the Eagle Ford using observed field data. When future infill wells are added to the development area, the formation pore...

... Abstract Due to the rapid rate decline of parent wells, infill drilling in adjacent pay zones becomes an essential technique to improve ultimate recovery and mitigate well interference in layered unconventional formations. However, most existing studies investigate the staggered/stacked well...

... drillstem testing upstream oil & gas bhp hydraulic fracturing drillstem/well testing reservoir geomechanics complex reservoir stress reorientation well spacing parent well stress evolution stress reversal stress reversal onset time fracture presented sepehrnoori base case magnitude...

..., referred to as "parent" wells, negatively affect the production performance of subsequently drilled "child" offset wells due to reservoir depletion effects. While the production degradation resulting from parent-child well interactions is well established empirically, generating accurate quantitative...

... fluid dynamics cluster fracture length stage-by-stage pressure fall parent well drillstem testing upstream oil & gas stage pressure gradient fracture half-length stage pressure initial pressure gradient complex reservoir drillstem/well testing multistage fracturing reservoir pressure...

... predicts EUR with ~75%+ accuracy and is proven reliable by more than ten newly drilled locations; and 3) the impact of frac hits to parent wells can be quantified using geochemical data, one case showing as much as ~20% drainage change that lasted for several weeks. reservoir characterization...

...). Furthermore, the presence of parent wells (pore pressure depletion) will accentuate the interference by altering fracture geometry and creating asymmetric fractures. In extreme cases, a fracture may only have one wing extended into the depleted zone (Mukherjee et al., 1995). Frac interference has been studied...

... Western Petroleum, a pure-play DJ operator, designed the Wilson project in 2019 through a structurally calm area, with one large graben cutting the full section along the toes of the wells, to characterize fluid movement in space and time. In 2020, data from eight parent wells on the nearby Postle pad...

... knowledge management asset and portfolio management reservoir geomechanics drillstem testing reservoir characterization hydraulic fracturing modeling & simulation complex reservoir reservoir simulation matrix access wolfcamp development order parent well matrix permeability...

... oil production. Pressure and production rate data from parent-child interactions was analyzed to develop correlations between parent well oil rates, parent well casing pressure drawdown, and child well production. Operator found that 12-month oil production from child wells improves by up to 114% when...

... Abstract Well performance data across several US shale plays shows that child wells typically underperform relative to parent wells (parent-child effect). The Eagle Ford shale is known to exhibit some of the most severe cases of parent-child effect with up to 60% degradation in normalized...

... into the complex interactions between primary (parent) and infill (child) wells to maximize resource recovery. Better understanding of these interactions will enable operators to optimize production performance of child wells, preserve parent well EURs, formulate a completion design to use in the field, avoid...

...) were overlapping with the depleted zone from parent wells. This allowed the model to be calibrated to data from both the un-depleted and depleted parts of the well, where the latter was observed to have more lateral asymmetry. The ‘best case’ simulation from the optimization algorithm has a 60...

... Abstract Inter-well Fracture Driven Interactions, aka FDIs, have gained visibility as more of high intensity events are observed in tightly spaced wells in unconventional reservoirs. Currently, the pressure response in the parent well during fracturing of the child well is often used...

... Abstract An ongoing challenge in unconventional reservoirs is the significant production degradation (loss of production) realized from child wells drilled adjacent to depleted parent wells. One strategy hypothesized to reduce the realized degradation is to modify the completion design...

... oil & gas lateral child well parent well texas fracture scenario delaware basin technology conference URTeC: 5559 Analysis of Well Interference in Delaware Basin: A Physics-Based and Data-Driven Approach Esmail Eltahan*1, Shayan Tavassoli2, Brian Casey2, Guinevere McDaid2, Emery...

... fracture hydraulic fracturing hft 2 reservoir characterization strain data microseismic event mechanism parent well fracture magnitude unconventional resource technology conference bedding plane heel stage wellbore URTeC: 5296 Mechanism of Microseismic Generation During Hydraulic Fracturing...

... Abstract The objective of this work was to optimize the performance of planned child wells placed in drilling pads adjacent to existing parent wells with one to two years of production. The work was conducted on the Sabalo Energy development area in Howard County, Midland basin, to optimize...

... cl concentration parent well hydraulic fracturing produced water discharge produced water chemistry surveillance horizontal well formation water URTeC: 5321 Produced Water Chemistry Surveillance and Application in the Permian Basin Wei Wang*, Wei Wei, Mehrnoosh Saneifar, Baosheng Liang...