... formation were conducted. Moreover, a large amount of long horizontal well data obtained from the Bazhenov formation field was used. Wells with extended HW drilling and MHF are necessary for commercial oil production in the Bazhenov formation. Problems can occur in such wells when operating in the flowing...

...Xiaoqiang Guo; Jun Liu; Zhigang Du; Kai Tang; Dayong Cao; Zuqing He Summary To improve the safety of cluster perforating tubing strings in horizontal wells with unconventional oil/gas reservoirs, a passing capability analysis model for cluster perforation string in a wellbore is established...

...A. Janczak; G. Oftedal; E. Nikjoo; M. Hoy; C. Puls; T. Florian; M. Kornberger; P. Knauhs; B. Davidescu; O. Huseby; T. Clemens Summary Horizontal wells are frequently used to increase injectivity and for cost-efficient production of mobilized oil in polymer-augmented waterfloods. Usually, only fluid...

... production (IP) for 180 days of oil—and introduce a model that evaluates horizontal well production variables based on DD. Key data were estimated using reservoir and production variables. The data analytics suggested the optimal DD value of 53 psi/D for different reservoirs within the Anadarko Basin...

... along the horizontal wellbore. In this paper, first, we built a cylindrical wellbore physical model to experimentally study the steam injection profiles of a single‐pipe horizontal well and a concentric dual‐pipe horizontal well. Thus, the heat and mass transfer behavior of steam along the horizontal...

... control material (LCM) was used, as required, in some but not all the wells. These long, horizontal wells were a combination of open hole (OH) and sand screens with and without inflow control together with cased and perforated (C&P) completions, producing from typical Brent Group sandstone formations...

... horizontal wells over the past few decades. The purpose is to apprise the industry and academic researchers on the various AL optimization approaches that have been used and suggest AL optimization areas where new technologies can be developed. In Canada, the Alberta Department of Energy–Oil Sand...

...C. N. Hardegree; B. A. Gerrard; S. L. Wildman; K. S. McKenzie Summary In this paper we highlight a pilot project in which chamber gas lift was installed in two unconventional horizontal wells. Chamber gas lift, a combination of deep gas lift and intermittent gas lift, allows for an efficient...

... 25 1 2019 7 2 2018 15 8 2019 Copyright 2019, Society of Petroleum Engineers acidizing Simulation productivity Upstream Oil & Gas pressure drop skin factor flow in porous media Fluid Dynamics wormhole network horizontal well Completion Installation and Operations...

... and subsequent current designs after any remediation work. Further detail on hydrocarbon‐ or fracturing‐fluid‐migration flow paths are referenced in Fleckenstein et al. ( 2015 ). shale gas casing and cementing water well Wattenberg field catastrophic barrier failure horizontal well Colorado...

... to propagate into the shale. In the case reported here, such a scenario was carefully avoided under all conditions because the reservoir is shallow and any breach of caprock is unacceptable. For horizontal wells, the model considers two orientations of fracture growth: longitudinal fractures (fracture...

...Kan Wu; Biyi Wu; Wei Yu Summary Well interference is a common phenomenon between wells observed in unconventional reservoirs, which has received significant attention. It plays an important role in well-spacing considerations. Massive hydraulic fractures are generated in horizontal wells...

...R. D. Barree; J. L. Miskimins; K. J. Svatek Summary Horizontal-well developments, focused on transverse hydraulic-fracture stimulation, have evolved rapidly during the past decade. Many of these completions may have missed or bypassed significant reserves that were intended to be produced from...

...Hai Liu; Peiwu Liu; Yongjie Huang; Xufeng Xiao; Xiaojing Liu; Meirong Tang Summary Activity in the Ordos Basin, China, has mostly occurred in the low-permeability, clay-rich Chang 7 sandstone, and has used multifractured horizontal wells as the preferred completion technique. To improve further...

... to complete two northwest-trending horizontal wells drilled on the northeast flank of the Lost Hills anticlinal structure that targeted thinner, higher-oil-saturation strata separated by thicker lower-oil-saturation intervals. The target reservoir presents high-porosity, low-matrix-permeability, and low...

... this problem. These methods include: Use of solvents and wettability-alteration chemicals to reduce the impact of condensate blockage Gas cycling and injection of nitrogen and supercritical carbon dioxide as pressure-maintenance methods Drilling horizontal wells, hydraulic fracturing, and acidizing to improve...

... to the flow profile in a multistage-fractured horizontal well. The ultimate goal is to interpret well performance and to optimize fracture-treatment design from monitored temperature data. This study has developed flow and thermal models for a system of horizontal wells with transverse fractures under single...

... model horizontal well vertical well flow in porous media Fluid Dynamics formation damage conductivity hydraulic damage permeability flow rate numerical pi gas flow rate Fracturing-fluid invasion of the porous medium leads to an increase of water saturation in the vicinity...

...M.. Tabatabaei; D.. Zhu; A.D.. D. Hill Summary Optimum fluid placement is crucial for successful acid-stimulation treatments of long horizontal wells where there is a broad variation of reservoir properties along the wellbore. Various methods have been developed and applied in the field...

...X.. Tan; M.. Tabatabaei; D.. Zhu; A.D.. D. Hill Summary Optimum fluid placement is crucial for a successful acid-stimulation treatment, both for horizontal wells where there is a broad variation of reservoir properties along the wellbore and for vertical wells with multiple zones and/or extensive...