... a one-square-mile section of the DJ Basin. The results show that the completion of an older wellbore has a significant effect on the leakage rate results. A small portion (10 -8 ) of the injected carbon can leak via a multi-segmented wellbore, while around 2.5% CO 2 can leak to the drinking water layer...

... of Asphaltene Deposition in Wellbores during Turbulent Flow . Journal of Petroleum Science and Engineering , 129 : 77 – 87 . Prakoso , A. , Punase , A. , Rogel , E. , Ovalles , C. , Hascakir , B. 2016 . Effect of Asphaltene Characteristics on its Solubility and Overall Stability...

..., considering the closure of the fracture tip and the uneven support of fractures. However, they did not consider the situation that the near-wellbore fracture section closed to form a pinch during the early production of oil wells. Fracturing flowback has become a mature technology for the development...

... Abstract When wax deposition behavior occurs, gas condensate well suffers from moderate to serve reduction of productivity, even wellbore region blockage. For the operation and maintenance of a gas condensate well production system, a new methodology is needed to understand the wax deposition...

..., commonly used for unconventional fracturing, has poor transport capability, causes more proppant to settle near the wellbore area and can pose additional risks to proppant production. Proppant production could damage downhole and surface equipment, reduce well performance, and lead to workover operations...

... Abstract A closed-loop geothermal well design is presented which incorporates both wellbore configuration and completions components as well as a strategy for well operations which together achieve meaningful production of thermal energy. Planning and optimization of intermittent circulation...

... an isolation packer is installed below each window. However, lateral access is not possible unless the entire completion is retrieved. TAML Level 3: The main bore is cased and cemented and the lateral is cased but uncemented. The lateral wellbore is mechanically joined to the main bore, but the junction...

... Abstract Cementing hydraulic modeling software is a powerful tool used to evaluate the hydrostatic impact during cementing placement. The input of accurate data can simulate the Equivalent Circulating Density (ECD) impact of the cementing design in the wellbore. The same software can utilize...

... with respect to wormholing efficiency. The core flow test data were used to calibrate the matrix stimulation simulator with representative fluid-rock interaction curves. Due to interval length and heterogeneity, the use of diverters was recommended to increase wellbore coverage during the treatment. A polymer...

... In maturing gas fields, liquid loading is a pervasive constraint of gas production. It generally refers to the inability of the gas well to lift all the liquid, which is coproduced with gas, to the ground surface, resulting in liquid accumulation in the wellbore ( Pagan and Waltrich, 2016...

... Growcock et al. (2004) detailed both the structure of the aphron and its mode of action in the wellbore for fluid loss mitigation in depleted and low-pressure formations while drilling. The basic principles can also be applied to wellbore completions. The structure of the aphron consists...

... geomechanics fracture hydraulic fracturing stage 1 fracture initiation interface hydraulic fracture ae localization wellbore propagation stage 2 viscosity fracture characterization proppant reservoir characterization experiment fracture propagation displacement pre-existing fracture...

... located in the upward and downward directions delayed the onset of formation failure, while closely spaced flow ports covering the entire circumference of the wellbore substantially increased the formation failure potential. Further, excessive stress increases caused by fracturing and proppant placement...

... Abstract Lost circulation material (LCM) is known to enhance the breakdown limit of wellbores. However, the related gain in the wellbore circulation density remains a weak link in the literature. A design scheme for the LCM blend is developed in this work that allows for quantification...

.... Pre-drill modeling for a candidate field onshore Abu Dhabi demonstrated the capability of resolving multiple formation layers, with a DOI of more than 90ft. Uncertainty is therefore important as other LWD tools have limited DOI's and can only be used to verify results close to the wellbore. The field...

.... The stratigraphy was comprised of a complex distribution of sands and shales, many penetrated by the wellbore, with others distributed away from the wellbore based on the depth of investigation of the EM measurements. If this model is the primary tool for mapping the formations and steering to penetrate the most...

..., higher gauge precision, and a lower level of measurement noise generates higher quality pressure transient testing data from which reservoir boundaries, or other features, can be identified farther away from the wellbore. In other words, higher flowrates, better gauges, and lower noise levels can lead...

... drillstem testing pressure transient testing upstream oil & gas reservoir geomechanics modeling & simulation fracture closure closure hydraulic fracture dahi taleghani hydraulic fracturing reservoir characterization wellbore journal fracture flow in porous media pressure transient...

... change methane subsurface storage circulation annular pressure drilling wellbore upstream oil & gas well control consideration migration operational procedure scenario procedure wbm choke multiphase flow simulation well control co2 influx fraction methane influx reservoir...

... Abstract When a well is shut in for an extended period, the mechanical integrity of the production casing must be verified periodically to ensure there are no leaks in the casing that could lead to potential fluid migration between the producing zone and other formations along the wellbore...